WO2023243498A1 - 伸縮シートの製造装置、伸縮シートの製造方法、及び着用物品 - Google Patents
伸縮シートの製造装置、伸縮シートの製造方法、及び着用物品 Download PDFInfo
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- WO2023243498A1 WO2023243498A1 PCT/JP2023/021082 JP2023021082W WO2023243498A1 WO 2023243498 A1 WO2023243498 A1 WO 2023243498A1 JP 2023021082 W JP2023021082 W JP 2023021082W WO 2023243498 A1 WO2023243498 A1 WO 2023243498A1
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- Prior art keywords
- sheet
- elastic member
- continuous
- continuous body
- elastic
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
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- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
- A61F13/45—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape
- A61F13/49—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape specially adapted to be worn around the waist, e.g. diapers, nappies
- A61F13/49007—Form-fitting, self-adjusting disposable diapers
- A61F13/49009—Form-fitting, self-adjusting disposable diapers with elastic means
- A61F13/4902—Form-fitting, self-adjusting disposable diapers with elastic means characterised by the elastic material
- A61F2013/49025—Form-fitting, self-adjusting disposable diapers with elastic means characterised by the elastic material having multiple elastic strands
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
- B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/01—General aspects dealing with the joint area or with the area to be joined
- B29C66/344—Stretching or tensioning the joint area during joining
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/80—General aspects of machine operations or constructions and parts thereof
- B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
- B29C66/834—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools moving with the parts to be joined
- B29C66/8341—Roller, cylinder or drum types; Band or belt types; Ball types
- B29C66/83411—Roller, cylinder or drum types
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/90—Measuring or controlling the joining process
- B29C66/91—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
- B29C66/914—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux
- B29C66/9141—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the temperature
- B29C66/91421—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the temperature of the joining tools
- B29C66/91423—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the temperature of the joining tools using joining tools having different temperature zones or using several joining tools with different temperatures
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
- B29K2995/0037—Other properties
- B29K2995/0046—Elastic
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/48—Wearing apparel
- B29L2031/4871—Underwear
- B29L2031/4878—Diapers, napkins
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/14—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers
- B32B37/16—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with all layers existing as coherent layers before laminating
- B32B37/20—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with all layers existing as coherent layers before laminating involving the assembly of continuous webs only
Definitions
- the present invention relates to an elastic sheet manufacturing apparatus, an elastic sheet manufacturing method, and a wearing article equipped with an elastic sheet manufactured using these manufacturing apparatuses and manufacturing methods.
- Patent Document 1 Japanese Patent No. 6,903,810
- a wearable article that includes a stretchable waist member that is attached to the wearer's body.
- a continuous stretchable sheet is formed by integrating a pair of sheets and an elastic member disposed between the pair of sheets.
- a pair of sheets and an elastic member are partially joined.
- the elastic member is weakened by partially cutting the elastic member in the elastic sheet continuous body for the purpose of joining other members (fasteners, absorbers, etc.) to predetermined positions of the waistline member. Processing takes place.
- the elastic member in the stretched state is cut. Therefore, during the weakening process, the elastic member contracts due to the restoring force. At this time, if the elongation rate of the elastic member before cutting is high, there is a risk that the elastic member will shrink vigorously due to the restoring force, the bond between the sheet and the elastic member will come undone, and the weakening process will extend to areas where weakening is not necessary. There is.
- An object of the present invention is to perform a weakening process of cutting an elastic member from a stretchable sheet continuous body in a stretchable sheet manufacturing apparatus that forms a stretchable sheet continuous body in which an elastic member is arranged between a pair of sheets.
- a stretchable sheet manufacturing apparatus that forms a stretchable sheet continuous body in which an elastic member is arranged between a pair of sheets.
- Another object of the present invention is to provide a wearable article including a stretchable sheet manufactured using the stretchable sheet manufacturing apparatus and method.
- the elastic sheet manufacturing apparatus of the present invention includes a forming section and a cutting section.
- the forming section forms a continuous stretchable sheet in which a continuous first sheet, a continuous second sheet, and a continuous elastic member disposed between the first sheet and the second sheet are integrated.
- the cutting section cuts the elastic member of the stretchable sheet continuous body.
- the forming portion includes a first joining member and a second joining member.
- the first joining member supports the first sheet, the elastic member, and the second sheet that are transported in the transport direction.
- the second joining member sandwiches the first sheet, the elastic member, and the second sheet with the first joining member.
- the first joining member has a first part and a second part on an opposing surface facing the second joining member.
- the second part is disposed adjacent to the first part in the conveying direction of the first sheet, the elastic member, and the second sheet that are supported by the first joining member and conveyed.
- the second joining member sandwiches the elastic member, the first sheet, and the second sheet between the first part of the first joining member and joins the first sheet and the second sheet, thereby making the elastic sheet continuous. Forms a restriction in the body.
- the second bonding member sandwiches the elastic member, the first sheet, and the second sheet between the second portion of the first bonding member, and the elastic member and at least one of the first sheet and the second sheet. By joining them together, a fixing part is formed in the stretchable sheet continuous body.
- the cutting section cuts the elastic member of the continuous stretchable sheet at the limiting portion of the continuous stretchable sheet being conveyed.
- the first sheet, the second sheet, and the elastic member are not joined. Furthermore, in the restriction section of the stretchable sheet continuous body, the contraction movement of the elastic member cut by the cutting section is restricted by the first sheet and the second sheet.
- Another aspect of the present invention is an elastic sheet manufacturing apparatus in which a continuous first sheet, a continuous second sheet, and a continuous elastic member disposed between the first sheet and the second sheet are integrated.
- a forming part is provided for forming a continuous stretchable sheet.
- the forming portion includes a first joining member and a second joining member.
- the first joining member supports the first sheet, the elastic member, and the second sheet that are transported in the transport direction.
- the second joining member sandwiches the first sheet, the elastic member, and the second sheet with the first joining member.
- Two or more second joining members are arranged along the transport direction.
- At least the second joining member on the most upstream side in the conveyance direction sandwiches the first sheet, the elastic member, and the second sheet between it and the first joining member, and the elastic member and at least one of the first sheet and the second sheet are connected to each other. form a temporarily joined part.
- At least the second joining member on the most downstream side in the conveyance direction inserts a temporary joining part between it and the first joining member, and permanently joins the elastic member and at least one of the first sheet and the second sheet, and expands and contracts. Form a continuous sheet.
- the method for manufacturing an elastic sheet of the present invention includes a forming step and a cutting step.
- a continuous first sheet, a continuous second sheet, and a continuous elastic member disposed between the first sheet and the second sheet are integrated to form a continuous stretchable sheet. be done.
- the cutting step the elastic member of the continuous stretchable sheet is cut.
- the forming process includes a conveying process, a first forming process, and a second forming process. In the conveyance process, the first sheet, the second sheet, and the elastic member are conveyed in the conveyance direction with the elastic member disposed between the first sheet and the second sheet.
- the elastic member, the first sheet and the second sheet By sandwiching the second sheet and joining the elastic member to at least one of the first sheet and the second sheet, a fixed portion is formed in the stretchable sheet continuous body.
- the elastic member, the first sheet, and the second sheet are sandwiched between the first joining member and the second joining member, and the first sheet and the second sheet are joined, thereby making the elastic sheet continuous. Forms a restriction in the body.
- the cutting step the elastic member of the continuous elastic sheet body is cut at the limiting portion of the continuous elastic sheet body.
- the limiting portion of the stretchable sheet continuous body is formed at a position adjacent to the fixed portion of the stretchable sheet continuous body.
- the first sheet, the second sheet, and the elastic member are not joined.
- the contraction movement of the elastic member cut in the cutting process is restricted by the first sheet and the second sheet.
- Another method for manufacturing an elastic sheet of the present invention is to integrate a continuous first sheet, a continuous second sheet, and a continuous elastic member disposed between the first sheet and the second sheet.
- the method includes a forming step of forming a continuous stretchable sheet.
- the forming process includes a conveying process, a first forming process, and a second forming process.
- the first sheet, the second sheet, and the elastic member are conveyed in the conveyance direction with the elastic member disposed between the first sheet and the second sheet.
- an elastic member is placed between a first bonding member that supports the first sheet, the elastic member, and the second sheet, and a second upstream bonding member that is conveyed in the conveyance direction.
- the temporary bonding portion is sandwiched between the first bonding member and the downstream second bonding member disposed downstream of the upstream second bonding member in the conveying direction, and the elastic member is and at least one of the first sheet and the second sheet are permanently joined to form a continuous stretchable sheet.
- the wearing article of the present invention includes a stretchable sheet.
- the elastic sheet includes at least a first sheet piece, a second sheet piece, and an elastic member.
- the elastic member extends in the first direction and is disposed between the first sheet piece and the second sheet piece.
- the elastic sheet includes a first portion and a second portion in the first direction. No elastic member is present in the first portion.
- the elastic member is joined to at least one of the first sheet piece and the second sheet piece.
- the first part includes a maximum gap between the first sheet piece and the second sheet piece, which communicate with the space in which the elastic member of the third part is arranged, in a cross-sectional view taken in a direction perpendicular to the first direction. However, there is a portion where the diameter is smaller than the diameter of the elastic member in a state where no tension is applied.
- the elastic sheet manufacturing apparatus of the present invention it is possible to suppress the occurrence of a problem in which the sheet and the elastic member in the elastic sheet become disconnected during the weakening process of cutting the elastic member.
- the elastic member is cut while the elastic member is being joined to at least one of the first sheet and the second sheet, and the elastic member is pulled back upstream by the restoring force. Therefore, it is possible to suppress the occurrence of a problem in which the elastic sheet manufacturing apparatus needs to be stopped in order to rearrange the elastic member.
- the elastic member is cut while the elastic member is being joined to at least one of the first sheet and the second sheet, and the elastic member is pulled back upstream by the restoring force. Therefore, it is possible to suppress the occurrence of a problem in which the elastic sheet manufacturing apparatus needs to be stopped in order to rearrange the elastic member.
- the wearing article of the present invention it is possible to suppress the occurrence of a problem in which the elastic member and the sheet piece come unfixed in the second portion of the elastic sheet.
- FIG. 1 is a front view of a refastenable type wearing article according to an embodiment of the present invention having a stretchable sheet when worn.
- FIG. 2 is a rear view of the wearing article shown in FIG. 1 when it is worn.
- FIG. 2 is a developed view of the wearing article shown in FIG. 1, showing a state in which the wearing article is unfolded.
- FIG. 2 is an exploded perspective view of the wearable article of FIG. 1.
- FIG. FIG. 2 is a schematic diagram of a wearing article manufacturing apparatus including an elastic sheet manufacturing apparatus according to an embodiment of the present invention, which manufactures the wearing article of FIG. 1.
- FIG. 6 is a diagram schematically showing an apparatus for forming a continuous stretchable sheet of the apparatus for manufacturing a wearing article shown in FIG. 5;
- FIG. 7 is a schematic diagram in which a part of the outer circumferential surface of the anvil roll of the forming apparatus of FIG. 6 is developed into a planar shape.
- a view of the second groove forming portion surrounded by a circle ⁇ in FIG. 7 viewed along the radial direction of the anvil roll, and a cross-sectional view of the second groove forming portion in the X1-X1 arrow direction of this figure are shown.
- FIG. 7 is a diagram schematically showing a continuous stretchable sheet formed by the stretchable sheet manufacturing apparatus of FIG. 5.
- FIG. FIG. 12 is a partial sectional view showing a state in which the area indicated by B3 in FIG.
- FIG. 11 is cut in a direction perpendicular to the conveying direction of the stretchable sheet continuous body (the direction around the waist when formed into a wearable article).
- FIG. 12 is a partial sectional view showing a state in which the area indicated by B1 in FIG. 11 is cut in a direction perpendicular to the conveying direction of the stretchable sheet continuous body (the direction around the waist when formed into a worn article).
- It is a figure which shows schematically the forming apparatus of the stretchable sheet continuous body of the stretchable sheet manufacturing apparatus based on modification A.
- modification C shows schematically the forming apparatus of the stretchable sheet continuous body of the stretchable sheet manufacturing apparatus based on modification C.
- FIG. 1 is a front view of a refastable type wearing article 1 when it is worn.
- FIG. 2 is a rear view of the wearing article 1 showing the state when worn.
- FIG. 3 is a developed view of the wearing article 1 showing a state in which the wearing article 1 is unfolded.
- FIG. 4 is an exploded perspective view of the wearing article 1.
- Wearing article 1 is a stretchable waist member 10 worn on the wearer's body, to which a stretchable sheet manufactured by a stretchable sheet manufacturing apparatus 100 and a stretchable sheet manufacturing method according to an embodiment of the present invention is applied. It is a worn article with The waist member 10 uses an elastic sheet in which an elastic member is arranged between a pair of sheets.
- the wearing article 1 is a wearing article that includes a waist member 10 that is made of an elastic sheet in which a part of the elastic member has been weakened (the elastic member has been partially cut).
- the elastic sheet of the present invention can be widely applied to, for example, waist members of disposable diapers, disposable medical gowns, etc., cuff members, hem members, etc., and is not limited to its uses.
- a wearing article including a stretchable sheet of the present invention will be described using a wearing article 1 that is a refastenable diaper as an example.
- a wearing article 1 that is a refastenable diaper
- the wearing article 1 of this embodiment has the same structure and configuration as the wearing article disclosed in Patent Document 1 (Japanese Patent No. 6,903,810) in many parts. Therefore, detailed description of the wearing article 1 will be omitted here unless particularly necessary.
- the waist circumference direction means a direction along the wearer's torso when the wearable article 1 is worn by the wearer.
- the direction perpendicular to the waistline is a direction orthogonal to the waistline direction, and means a direction along the body length direction (height direction) of the wearer when the wearable article 1 is worn by the wearer.
- the referable type wearing article 1 includes a waist member 10 arranged around the wearer's waist, and a waist member 10 arranged from the back of the wearer through the crotch area. It mainly includes an absorbent body 20 disposed over the front abdomen.
- the waist member 10 includes a waist body 16 placed around the wearer's waist, and a male fastener 12 attached to the waist body 16.
- the waist body 16 is a member that is attached to the wearer's waist and is expandable and contractible in the waist direction.
- an elastic sheet according to the present invention is used for the waist body 16.
- the waist main body 16 mainly includes an inner sheet 14, an outer sheet 15, and an elastic member 11 disposed between the inner sheet 14 and the outer sheet 15, as shown in FIG.
- One of the inner sheet 14 and the outer sheet 15 is an example of the first sheet piece in the present invention, and the other of the inner sheet 14 and the outer sheet 15 is an example of the second sheet piece in the present invention.
- the inner sheet 14 is, for example, a sheet piece of nonwoven fabric.
- the inner sheet 14 is a band-shaped member extending in the waist direction.
- the inner sheet 14 has an inner surface 16i of the waist main body 16 that faces the wearer's skin when the wearable article 1 is worn by the wearer (see FIG. 4).
- One end of the absorbent body 20 is joined to a portion of the inner sheet 14 corresponding to an absorber joint portion 10b (described later) (a portion of the inner surface 16i of the waist main body 16 corresponding to the absorbent joint portion 10b).
- a male fastener 12 is joined to a male fastener joint portion 10d of the inner sheet 14 (a portion corresponding to the male fastener joint portion 10d of the inner surface 16i of the waist main body 16).
- the outer sheet 15 is, for example, a sheet piece of nonwoven fabric.
- the outer sheet 15 is a band-shaped member that extends in the waist direction of the wearing article 1.
- the outer sheet 15 is arranged on the side opposite to the inner surface 16i of the waist main body 16, and is the outer surface of the waist main body 16 that faces outward (the side opposite to the wearer's skin) when the wearable article 1 is worn by the wearer. 16o (see Figure 4).
- the elastic member 11 is arranged between the inner sheet 14 and the outer sheet 15, and is an elastic member that expands and contracts in the direction of the waist.
- the elastic member 11 In the manufactured wearing article 1, the elastic member 11 is in a stretched state, and a restoring force acts on the elastic member 11 in a direction that causes it to contract in the waist direction.
- the elastic member 11 is made of a material such as polyurethane, natural rubber, or thermoplastic resin.
- the shape of the elastic member 11 is thread-like in this embodiment. In this embodiment, a plurality of thread-like elastic members 11 extending in the waist direction are arranged between the inner sheet 14 and the outer sheet 15 (see FIGS. 1 to 4).
- the elastic member 11 is partially joined to at least one of the inner sheet 14 and the outer sheet 15. As shown in FIG. 4, the elastic member 11 is disposed in a portion facing the inner sheet 14 and in a region of the waist main body 16 excluding an absorber joint portion 10b and an end portion 10c, which will be described later. As shown in FIGS. 3 and 4, the elastic member 11 is cut off by a weakening process during the manufacturing process of the wearing article 1 at the absorber joint portions 10b and end portions 10c of the waist main body 16, which will be described later.
- the waist main body 16 in which the inner sheet 14, the outer sheet 15, and the elastic member 11 are integrated is attached to the absorber joint 10b and on both sides of the absorber joint 10b in the wearer's waist direction. and two side portions 10a arranged at the lateral sides 10a.
- the absorber joint portion 10b is a portion where the absorber 20 is joined.
- the absorbent joint portion 10b is located at the center of the waist main body 16 in the waist direction and at the lower part of the waist main body 16 in the direction orthogonal to the waist (when the wearer wears the wearing article 1 and stands upright) be on the receiving end).
- the elastic member 11 has been weakened as described above, and the elastic member 11 does not exist. Alternatively, as a result of the weakening process, the elastic force of the elastic member 11 does not substantially act on the absorber joint 10b.
- the elastic member 11 is disposed above the waist body 16 in the direction orthogonal to the waist of the absorber joint 10b (above the absorber joint 10b when the wearer wears the wearing article 1 and stands upright). ing. Therefore, above the waist body 16 in the direction orthogonal to the waist of the absorber joint 10b, the elastic force of the elastic member 11 causes the waist body 16 to come into close contact with the wearer's torso when the wearer wears the wearing article 1. be able to.
- Each of the two side portions 10a of the waist main body 16 is a portion that extends in the waist direction from the position where the absorbent joint portion 10b is present to the end portion 10c of the side portion 10a in a direction away from the absorbent joint portion 10b. be.
- the two ends 10c are both ends of the waist main body 16 in the waist direction.
- the side portions 10a are members that cover the left and right side surfaces and the front surface of the wearer's torso when the wearer wears the wearable article 1.
- a male fastener 12 is joined to each of the two end portions 10c of the waist main body 16, and is used in combination with a female fastener 22, which will be described later, to function as a hook-and-loop fastener. More specifically, the male fastener 12 is the end portion 10c of the waist main body 16, and is joined to the inner surface 16i of the waist main body 16 (the surface of the inner sheet 14 facing the wearer's skin). The part of the waist main body 16 to which the male fastener 12 is joined is called a male fastener joint part 10d.
- the absorber 20 is a member for absorbing body fluids such as urine.
- the absorbent core 20 mainly includes a core 25, a top sheet 24, a back sheet 26, a female fastener 22, leg gathers 31, and three-dimensional gathers 40.
- the core 25 includes a nonwoven fabric that supports a superabsorbent polymer, and has the function of absorbing body fluids such as urine.
- the top sheet 24 is a member provided on the wearer's skin side with respect to the core 25.
- the top sheet 24 is a sheet-like member made of one non-woven fabric, or a sheet-like member formed by stacking a plurality of non-woven fabrics in a layered manner.
- the back sheet 26 is a sheet-like member provided on the side opposite to the wearer's skin side (outer side) with respect to the core 25 so as to sandwich the core 25 between it and the top sheet 24.
- the back sheet 26 includes a liquid-impermeable sheet 26a that is a nonwoven fabric made of polypropylene, polyethylene, or the like, and an exterior sheet 26b that covers the outside of the liquid-impermeable sheet 26a.
- the liquid-impermeable sheet 26a is a member that has water repellency and suppresses passage of body fluids such as urine.
- a female fastener 22 is attached to the outer surface of the outer sheet 26b (the surface opposite to the wearer's skin side of the outer sheet 26b), which functions as a hook-and-loop fastener when used in combination with the male fastener 12 of the waist main body 16. ing.
- the leg gathers 31 are elastic members that are placed at positions corresponding to the bases of the legs when the wearer wears the wearing article 1. When the wearing article 1 is unfolded as shown in FIG. 3, the leg gathers 31 extend along both edges of the liquid-impermeable sheet 26a in the waistline direction, and cover approximately the entirety of the liquid-impermeable sheet 26a in the direction perpendicular to the waistline. It is set in. The leg gathers 31 are disposed in a stretched state in a direction orthogonal to the waist between the liquid-impermeable sheet 26a and the top sheet 24 when the wearing article 1 is unfolded as shown in FIG.
- the three-dimensional gathers 40 are provided on the surface of the topsheet 24 facing the skin side.
- the three-dimensional gathers 40 elastically adhere to the back, crotch, front abdomen, etc. of the wearer, and body fluids such as urine flow out of the wearable article 1. to suppress
- the absorbent body 20 is joined to the absorbent body joint portion 10b of the waist main body 16, as shown in FIGS. 3 and 4.
- the absorbent body 20 is arranged in a direction perpendicular to the waistline from the absorbent joint 10b and away from the waistline main body 16, as shown in FIG. Extends to.
- the absorbent body 20 is placed from the wearer's back to the front abdomen via the crotch.
- the above-mentioned outer surface faces away from the wearer when the wearer wears the wearing article 1.
- a female fastener 22 is attached.
- the absorbent body 20 is folded back so that the top sheet 24 is disposed on the inside, and the absorbent body 20 is folded back so that the top sheet 24 is placed inside, and the side portion 10a of the waist main body 16 is folded back. At least the surface of the end portion 10c on the side where the male fastener 12 is arranged is deformed so as to overlap the exterior sheet 26b of the back sheet 26 of the absorbent body 20. Then, as shown in FIGS. 1 and 2, the male fastener 12 of the waist main body 16 is engaged with the female fastener 22 attached to the exterior sheet 26b of the absorbent body 20.
- the wearer of the wearable article 1 pushes open the waist member 10 of the refastenable type wearable article 1 assembled into a pants-like shape with the male fastener 12 and the female fastener 22 engaged, and inserts the legs. Then, wear article 1 is put on like pants.
- the stretchable sheet manufacturing device 100 which constitutes a part of the manufacturing device 1000 for the wearing article 1, is a device that forms a stretchable sheet continuous body 116, which will be described later.
- the elastic sheet manufacturing apparatus 100 mainly includes a forming apparatus 200 and a cutting apparatus 300, which will be described later. The characteristic configuration and method of the elastic sheet manufacturing apparatus 100 of this embodiment will be described later.
- the manufacturing apparatus 1000 for the wearing article 1 and the manufacturing method for the wearing article 1 are similar in many parts to the manufacturing apparatus and manufacturing method for the wearing article disclosed in Patent Document 1 (Japanese Patent No. 6903810). Therefore, detailed description of the manufacturing apparatus 1000 for the wearing article 1 and the manufacturing method for the wearing article 1 will be omitted here unless particularly necessary.
- the conveyance direction of sheets, etc. in each process will be referred to as the MD direction, and the direction perpendicular to this will be referred to as the CD direction.
- Steps P1 and P2 in FIG. 5 are an example of a process for manufacturing a continuous stretchable sheet 116 in which a plurality of waist main bodies 16 are continuous.
- a sheet continuum 115 (an example of a second sheet) in which a plurality of outer sheets 15 are continuous is conveyed in the MD direction, and continuous stretched sheets are conveyed on the continuum 115.
- the elastic member 11 is arranged linearly along the MD direction.
- a plurality of continuous elastic members 11 are arranged in the continuous body 115 at intervals in a direction perpendicular to the waist circumference (CD direction). Further, in step P1, as shown in FIG.
- a continuous body 114 (an example of a first sheet) of a plurality of inner sheets 14 is conveyed in the MD direction, and the continuous body 114 (an example of a first sheet) is conveyed in the MD direction so as to cover the elastic member 11 from above. are placed on the continuum 115.
- the forming device 200 moves the elastic member 11 between the continuous body 115 and the continuous body 114. It is joined to at least one of the bodies 114.
- the forming device 200 joins the elastic member 11 to at least one of the continuous body 115 and the continuous body 114 by ultrasonic welding. Note that the joining method used by the forming apparatus 200 may be welding by heat sealing.
- the continuous body in which the continuous body 114, the elastic member 11, and the continuous body 115 are laminated and integrated by joining will be referred to as an elastic sheet continuous body 116.
- step P2 the elastic member 11 is weakened at a position of the stretchable sheet continuous body 116 corresponding to the absorber joint 10b where the absorber 20 is arranged and the male fastener joint 10d where the male fastener 12 is arranged. administered.
- the weakening process here is a process in which the elastic member 11 of the stretchable sheet continuous body 116 is cut by the cutting device 300.
- the cutting device 300 may be a gather cutter that cuts the elastic member 11 using a blade, or may be an embossing roll (heat embossing) device that melts and cuts the elastic member 11 by applying heat.
- Steps P3 to P7 are examples of steps for manufacturing the absorbent body 20.
- a topsheet work-in-progress is formed by combining a continuous body of topsheets 24 in which a plurality of topsheets 24 are continuous and a continuous body of three-dimensional gathers 40 in which a plurality of three-dimensional gathers 40 are continuous.
- step P4 a plurality of cores 25 form a continuous body of cores 25, and the core 25 is manufactured using the continuous body of cores 25.
- step P5 a backsheet work-in-progress is formed by joining the continuous body of the backsheet 26 and the continuous body of the leg gathers 31.
- step P6 an absorber work-in-progress is formed by combining the front sheet work-in-progress formed in step P3, the core 25 formed in step P4, and the back sheet work-in-progress formed in step P5.
- step P7 the absorbent work-in-progress formed in step P6 is cut, and individual absorbent cores 20 are manufactured.
- Steps P8 to P11 are examples of steps for assembling the wearing article 1.
- one end (female The end opposite the fastener 22) is disposed.
- the absorbent core 20 is joined to the inner surface 16i of each waist main body 16 at a position corresponding to the absorbent joint portion 10b.
- the joining means may be adhesion using a hot melt adhesive, thermal welding using a heat sealing device, or ultrasonic welding using an ultrasonic welding device.
- step P9 a portion (referred to as an extension portion 15c, FIG. 4 reference) is wrapped.
- the extension portion 15c is joined to each absorbent body 20 while covering the end portion (the end portion joined to the stretchable sheet continuous body 116) of each absorbent body 20 on the absorbent body joining portion 10b.
- the male fasteners 12 are joined to the portions of each waist main body 16 corresponding to the male fastener joining portions 10d.
- the joining means here may be adhesion using a hot melt adhesive, welding by heat sealing, or ultrasonic welding.
- step P10 the absorbent core 20 is folded in half in the CD direction by the folding device 54.
- step P11 the stretchable sheet continuous body 116 is cut in the CD direction by the cutter 56 at an intermediate position between adjacent absorbent bodies 20 and at an intermediate position in the MD direction of the male fastener 12. Thereby, the stretchable sheet continuous body 116 and the plurality of absorbent bodies 20 are separated into each waist main body 16 and each absorbent body 20 joined thereto.
- step P12 the side portions 10a arranged on both sides in the MD direction of the waistline member 10 are directed toward the absorbent joint portion 10b of the waistline member 10 so that the male fasteners 12 at both end portions 10c face the outer surface of the absorbent body 20. It is folded back. Next, the male fastener 12 of the waist member 10 and the female fastener 22 of the absorbent body 20 are engaged.
- FIG. 6 is a diagram schematically showing the forming apparatus 200.
- FIG. 7 is a schematic diagram showing a part of the outer circumferential surface 211 of the anvil roll 210 of the forming apparatus 200 developed into a planar shape.
- FIG. 8 shows a view of the second groove forming portion 216 (a part of the second protrusion 212b) surrounded by a circle ⁇ in FIG. 7, viewed along the radial direction of the anvil roll 210, and -A cross-sectional view of the second groove forming portion 216 in the direction of the X1 arrow.
- FIG. 6 is a diagram schematically showing the forming apparatus 200.
- FIG. 7 is a schematic diagram showing a part of the outer circumferential surface 211 of the anvil roll 210 of the forming apparatus 200 developed into a planar shape.
- FIG. 8 shows a view of the second groove forming portion 216 (a part of the second protrusion 212b) surrounded by a circle ⁇ in FIG. 7,
- FIG. 9 shows a view of the first groove forming portion 214 (a part of the first widthwise protruding portion 212aa) surrounded by a circle ⁇ in FIG. 7 as seen along the radial direction of the anvil roll 210, and this view.
- FIG. 10 shows a view of the first groove forming portion 215 (first circumferential protruding portion 212ab) surrounded by the ellipse ⁇ in FIG. 7, viewed along the radial direction of the anvil roll 210, and A sectional view of the first groove forming portion 215 in the direction of the X3 arrow is shown.
- FIG. 11 is a diagram schematically showing a continuous stretchable sheet 116 formed by the stretchable sheet manufacturing apparatus 100 (forming device 200 and cutting device 300).
- FIG. 12 shows the area indicated by B3 (third area B3) in FIG. It is a partial sectional view showing a state.
- FIG. 13 shows the area indicated by B1 (first area B1) in FIG. It is a partial sectional view showing a state.
- FIGS. 6 to 13 are drawings for explanation, and do not accurately represent the actual dimensions and shapes of each component. Further, in FIGS. 6 to 13, some reference numerals are omitted to avoid complicating the drawings.
- the forming device 200 is an example of a forming section, and includes a continuous body 114 that is an example of a continuous first sheet, a continuous body 115 that is an example of a continuous second sheet, and a continuous body 114 that is an example of a continuous second sheet, and a continuous body 114 that is an example of a continuous second sheet.
- the continuous elastic members 11 disposed in the elastic member 11 form an integrated elastic sheet continuous body 116.
- the forming device 200 mainly includes an anvil roll 210 that is an example of a first bonding member, an introduction device 220, and an ultrasonic horn 230 that is an example of a second bonding member (see FIG. 6).
- the ultrasonic horn 230 vibrates by ultrasonic waves generated by an oscillator (not shown).
- the anvil roll 210 is a member that supports the continuous body 114, the elastic member 11, and the continuous body 115, which are conveyed in the conveyance direction D (see the arrow in FIG. 6).
- the introducing device 220 introduces the elastic member 11 into the anvil roll 210 while guiding it. Further, the continuous body 115 is introduced into the anvil roll 210 upstream of the introduction position of the elastic member 11 in the rotation direction of the anvil roll 210 . Furthermore, the continuous body 114 is introduced into the anvil roll 210 downstream of the introduction position of the elastic member 11 in the rotational direction of the anvil roll 210 .
- the anvil roll 210 conveys the pair of continuous bodies 115, 114 and the elastic member 11 so that the elastic member 11 is disposed between the pair of continuous bodies 115, 114.
- the ultrasonic horn 230 sandwiches the continuous body 114, the elastic member 11, and the continuous body 115 with the anvil roll 210.
- the ultrasonic horn 230 cooperates with the anvil roll 210 to partially join (ultrasonic weld) the pair of continuous bodies 115 and 114 to each other. Further, the ultrasonic horn 230 cooperates with the anvil roll 210 to partially join at least one of the pair of continuous bodies 115, 114 to the elastic member 11, so that the elastic member Hold 11.
- the second joining member according to the present invention is not limited to the ultrasonic horn 230, but may include a built-in heater for thermally welding the continuous bodies 115, 114 and the continuous bodies 115, 114 and the elastic member 11. It may also be a roll or the like.
- the anvil roll 210 will be explained in more detail.
- the anvil roll 210 is a cylindrical member that rotates around an axis, and has a large number of protrusions 212 on the outer circumferential surface 211 that protrude outward in the radial direction of the anvil roll 210, as shown in FIGS. 6 and 7. .
- the outer peripheral surface 211 of the anvil roll 210 is an example of an opposing surface of the anvil roll 210 as the first joining member that faces the ultrasonic horn 230 as the second joining member.
- the protruding portion 212 has a first surface 212f that faces the ultrasonic horn 230 that is ultrasonically vibrating (see FIG. 6).
- the first surface 212f protrudes outward in the radial direction of the anvil roll 210 by a certain height h from the outer circumferential surface 211 of the anvil roll 210, for example, as shown in FIGS. 8 to 10.
- the first surface 212f of the protrusion 212 and the ultrasonic horn 230 that is ultrasonically vibrating pressurize the continuous body 115 and the continuous body 114 by sandwiching the continuous body 115 and the continuous body 114 between them. Ultrasonic welding.
- the continuous body 115 and the continuous body 114 are conveyed between the anvil roll 210 and the ultrasonic horn 230, these members may not meet the contact between the ultrasonic horn 230 and the first surface 212f of the protrusion portion 212.
- the continuous body 115 and the continuous body 114 are not ultrasonically welded in a portion where no pressure is applied between them.
- the protrusions 212 are provided spaced apart from each other in the circumferential direction R of the anvil roll 210.
- One or more grooves G extending in the circumferential direction R of the anvil roll 210 are formed in the first surface 212f of each protrusion 212.
- the groove G extends along the conveyance direction D of the continuous body 114, the elastic member 11, and the continuous body 115 that are supported and conveyed by the anvil roll 210.
- the groove G is a groove into which the continuous body 115 and the elastic member 11 of the continuous body 114, the elastic member 11, and the continuous body 115 supported and conveyed by the anvil roll 210 are fitted. As shown in FIG.
- each elastic member 11 introduced into the anvil roll 210 by the introduction device 220 is guided by the grooves G arranged in a straight line and is conveyed along the circumferential direction R of the anvil roll 210.
- the protruding part 212 includes a first protruding part 212a as an example of the first part in the claims, and a second protruding part 212b as an example of the second part in the claims.
- the first protrusion 212a includes a first widthwise protrusion 212aa and a first circumferential protrusion 212ab.
- the second protruding portion 212b is provided in an area in the circumferential direction R of the anvil roll 210 where the first protruding portion 212a is not provided. Specifically, in the circumferential direction R of the anvil roll 210, the second protrusion portion 212b has a region where the first protrusion portion 212a is provided on both sides of a region where the first protrusion portion 212a is provided. (See Figure 7). In other words, in the conveyance direction D of the continuous body 114, the elastic member 11, and the continuous body 115 supported and conveyed by the anvil roll 210, the second protrusion 212b is located upstream and downstream of the first protrusion 212a. (See Figure 7).
- the second protruding part 212b which is a part of the protruding part 212, extends in the width direction S of the anvil roll 210 (orthogonal to the MD direction in which the continuous bodies 114, 115 and the elastic member 11 are conveyed). CD direction).
- the second protruding portion 212b extends along the generatrix parallel to the axial direction of the anvil roll 210.
- Two second protrusions 212b are arranged adjacent to the first protrusion 212a on the upstream and downstream sides in the transport direction D (see FIG. 7).
- the number of the second protrusions 212b is an example, and the second protrusions 212b are arranged adjacent to the upstream and downstream sides of the first protrusion 212a in the conveyance direction D, and one or more second protrusions 212b are provided, respectively. Three or more may be arranged. Note that, as shown in FIG. 7, a plurality of grooves G extending in the circumferential direction R of the anvil roll 210 are formed in the second protrusion portion 212b extending in the width direction S, and are spaced apart from each other in the width direction S of the anvil roll 210. has been done.
- the first circumferential protrusions 212ab which are some of the protrusions 212, extend in the circumferential direction R of the anvil roll 210 (MD direction in which the continuous bodies 114, 115 and the elastic member 11 are conveyed). Extends to.
- One groove G extending in the circumferential direction R of the anvil roll 210 is formed in each of the first circumferential protrusions 212ab extending in the circumferential direction R.
- the first circumferential protruding portion 212ab may be divided into a plurality of parts in the circumferential direction R of the anvil roll 210 instead of extending long in the circumferential direction R of the anvil roll 210.
- the first widthwise protrusions 212aa which are some of the protrusions 212, (CD direction perpendicular to the CD direction).
- the first widthwise protruding portion 212aa extends along a generatrix parallel to the axial direction of the anvil roll 210.
- the first width direction protrusion 212aa is adjacent to the upstream and downstream sides of the first circumferential protrusion 212ab in the conveyance direction D (the first circumferential protrusion 212ab and the second circumferential protrusion 212b). (see FIG. 7).
- the number of the first widthwise protrusions 212aa is an example, and the first widthwise protrusions 212aa are adjacent to the upstream and downstream sides of the first circumferential protrusions 212ab in the conveyance direction D. Two or more of each may be arranged. Further, in other examples, the first widthwise protruding portion 212aa may be omitted.
- a plurality of grooves G extending in the circumferential direction R of the anvil roll 210 and spaced apart from each other in the width direction S of the anvil roll 210 are formed in the first width direction protruding portion 212aa extending in the width direction S.
- the grooves G provided in the first protruding part 212a and the second protruding part 212b are adjacent to each other along the circumferential direction R of the anvil roll 210. It is arranged in line with the groove G provided in the second protruding portion 212b.
- the continuous body 115 and the elastic member 11 are arranged in a plurality of blocks arranged along the circumferential direction R of the anvil roll 210.
- the grooves G of the protrusions 212 are arranged side by side in the circumferential direction R of the anvil roll 210 (arranged at the same position in the width direction S).
- the forming device 200 conveys the continuous body 114, the elastic member 11, and the continuous body 115 in the conveyance direction D with the continuous body 115 and the elastic member 11 entering the groove G.
- the continuous body 115 and the elastic member 11 enter into the groove G, but the present invention is not limited to this, and the continuous body 114 and the elastic member 11 enter the groove G. (In other words, in the forming apparatus 200, the continuous body 114, the elastic member 11, and the continuous body 115 may be conveyed with the continuous body 114 side disposed inside).
- the continuous body 114 and the continuous body 115 with the elastic member 11 sandwiched between them are conveyed, and the continuous body 114, the elastic member 11, and the continuous body 115 are connected to the ultrasonic horn 230.
- the ultrasonic horn 230 and the protrusions 212 of the anvil roll 210 sandwich the continuous body 114, the elastic member 11, and the continuous body 115 therebetween. Further, at this time, the ultrasonic horn 230 vibrates ultrasonically.
- the ultrasonic horn 230 and the first surface 212f of the protrusion 212 of the anvil roll 210 are sandwiched between the ultrasonic horn 230 and the first surface 212f of the protrusion 212 of the anvil roll 210.
- the pressurized continuum 114 and continuum 115 are joined (ultrasonic welding).
- the ultrasonic horn 230 is caused to vibrate ultrasonically, and the ultrasonic horn 230 and the anvil
- the elastic member 11 is connected between the ultrasonic horn 230 and the bottom surface of the groove G of the protrusion 212 of the anvil roll 210 via the continuous body 114 and the continuous body 115.
- the continuous bodies 114 and 115 and the elastic member 11 are joined (ultrasonic welding).
- the protruding portion 212 of the anvil roll 210 includes the first protruding portion 212a and the second protruding portion 212b as described above. Between the ultrasonic horn 230 and the first protruding portion 212a, the continuous body 114 and the continuous body 115 are not joined to the elastic member 11, and between the ultrasonic horn 230 and the second protruding portion 212b. Then, at least one of the continuous body 114 and the continuous body 115 and the elastic member 11 are joined.
- the continuous body 114 and the continuous body 115 and the elastic member 11 are joined.
- the first protruding portion 212a is a portion that comes into contact with the outer sheet 15 at and around the portion that will become the male fastener joint portion 10d when the wearing article 1 is manufactured from the stretchable sheet continuous body 116 formed by the forming device 200. .
- the first protruding portion 212a is formed by sandwiching the continuous body 114, the elastic member 11, and the continuous body 115 between the ultrasonic horn 230 and joining the continuous body 114 and the continuous body 115 to form a continuous stretchable sheet.
- a restriction portion 116b (see FIGS. 9 and 10) is formed in the body 116.
- the first protruding portion 212a pressurizes the continuous body 114 and the continuous body 115 by sandwiching the continuous body 114 and the continuous body 115 between the first surface 212f and the ultrasonic horn 230. 115, a restricting portion 116b is formed in the stretchable sheet continuous body 116.
- the restricting portion 116b In the restricting portion 116b, the continuous body 114 and the continuous body 115 and the elastic member 11 are not joined. Further, when the elastic member 11 is cut by the cutting device 300, the restricting portion 116b limits the contraction movement of the elastic member 11 cut by the cutting device 300 by the continuous body 114 and the continuous body 115. Note that the continuum 114 and the continuum 115 restricting the contraction movement of the elastic member 11 does not mean that the continuum 114 and the continuum 115 do not allow the contraction movement of the elastic member 11 (the elastic member 11 does not cause contraction). , the continuous body 114 and the continuous body 115 limit (suppress) the momentum of the contraction movement of the elastic member 11. In other words, the presence of the restriction portion 116b causes the elastic member 11 cut by the cutting device 300 to contract more slowly than in the case where the restriction portion 116b is not present.
- the elastic member 11 in order to limit the contraction movement of the elastic member 11 by the restricting portion 116b, the elastic member 11 is in a compressed state by the continuum 114 and the continuum 115 in the restricting portion 116b.
- There is a portion where the maximum gap with the continuous body 115 is smaller than the diameter of the elastic member 11 in a state where no tension is applied.
- the second protrusion portion 212b is formed on the outer side of the absorber joint portion 10b side from the male fastener joint portion 10d in the waist circumference direction. This is the part that comes into contact with the sheet 15.
- the second protruding portion 212b sandwiches the continuous body 114, the elastic member 11, and the continuous body 115 with the ultrasonic horn 230, and connects at least one of the continuous body 114 and the continuous body 115 to the elastic member 11.
- a fixing portion 116a is formed on the stretchable sheet continuous body 116. Note that in the fixed portion 116a in this embodiment, both the continuous body 114 and the continuous body 115 are joined to the elastic member 11.
- the first protruding portion 212a and the second protruding portion 212b each have the following configuration.
- the second protruding portion 212b includes a plurality of second grooves extending in the circumferential direction R of the anvil roll 210 beyond the other portions of the second protruding portion 212b, as drawn within the circle ⁇ in FIG. It has a forming portion 216 (see FIG. 8).
- the plurality of second groove forming portions 216 are arranged at intervals in the width direction S of the anvil roll 210.
- the first surface 212f of the second groove forming portion 216 has a second groove 216a into which the continuous body 115 and the elastic member 11 of the continuous body 114, the elastic member 11, and the continuous body 115 conveyed in the conveying direction D are inserted. (Groove G) is formed (see FIG. 8).
- the second groove 216a is a V-shaped groove as shown in FIG. Note that the depth of the second groove 216a is smaller than the sum (first total value) of the diameter of the elastic member 11 and the thickness of the continuous body 115, which are conveyed under tension in the forming apparatus 200.
- the first widthwise protruding portion 212aa has a plurality of portions extending in the circumferential direction R of the anvil roll 210 than the other portions of the first widthwise protruding portion 212aa, as drawn within the circle ⁇ in FIG. It has a first groove forming portion 214.
- the plurality of first groove forming portions 214 are arranged at intervals in the width direction S of the anvil roll 210.
- the first widthwise protruding portion 212aa has a first groove forming portion 214 having a shape described below at a position corresponding to at least the first circumferentially protruding portion 212ab in the width direction S of the anvil roll 210.
- the first groove forming portion 214 has a first groove 214a (groove G) into which the continuous body 115 and the elastic member 11 of the continuous body 114, the elastic member 11, and the continuous body 115 conveyed in the conveying direction D are inserted. It is formed.
- the first groove 214a is a U-shaped groove as shown in FIG.
- the depth of the first groove 214a is larger than the sum (first total value) of the diameter of the elastic member 11 and the thickness of the continuous body 115, which are transported under tension in the forming apparatus 200.
- the elastic member 11 conveyed through the first groove 214a of the first groove forming portion 214 is entirely accommodated within the first groove 214a.
- the elastic member 11 when the continuous body 114, the elastic member 11, and the continuous body 115 are sandwiched between the first groove forming portion 214 of the first widthwise protruding portion 212aa and the ultrasonic horn 230, the elastic member 11 is not pressurized between the ultrasonic horn 230 and the bottom surface of the first groove 214a of the first groove forming portion 214, and the continuous body 114 and the continuous body 115 are not joined to the elastic member 11.
- the continuous body 114, the elastic member 11, and the continuous body 115 are sandwiched between the first groove forming portion 214 of the first widthwise protruding portion 212aa and the ultrasonic horn 230, the first widthwise protruding portion 212aa Between the first surface 212f of the strip portion 212aa and the ultrasonic horn 230, only the continuous body 114 and the continuous body 115 are joined.
- the width of the first groove 214a (the dimension in the width direction S of the anvil roll 210) is the sum of the diameter of the elastic member 11 being conveyed in the conveying direction D through the forming device 200 and twice the thickness of the continuous body 115. (third total value) and smaller than the sum of the diameter of elastic member 11 and twice the thickness of continuous body 115 (fourth total value) in a state where no tension is applied.
- the first circumferential protrusion 212ab protrudes outward in the radial direction of the anvil roll 210 to the same height h as the first width protrusion 212aa, as drawn within the ellipse ⁇ in FIG. It has a first groove forming portion 215 (see FIG. 10).
- the first groove forming portion 215 differs from the first groove forming portion 214 in that it extends longer in the circumferential direction R of the anvil roll 210 than the first groove forming portion 214;
- the cross-sectional shape of the first groove 215a is similar to the first groove 214a (see FIG. 10). Further, the first groove 215a and the first groove 214a serve the same purpose.
- a detailed explanation of the first groove forming portion 215 and the first groove 215a will be omitted.
- the elastic member 11 By cutting the elastic member 11 at this position, the elastic member 11 moves at a relatively low speed toward the fixed part 116a adjacent to the restricting part 116b, with its contraction movement being restricted by the restricting part 116b, One of the male fastener joints 10d of the waist main body 16 manufactured from the stretchable sheet continuous body 116 that is transported on the downstream side in the transport direction D from the cutting position, and the stretchable sheet that is transported on the upstream side in the transport direction D from the cutting position.
- One of the male fastener joints 10d of the waist main body 16 manufactured from the continuous body 116 is formed.
- FIG. 11 depicts a stretchable sheet continuous body 116 in which the elastic member 11 is partially cut by the cutting device 300, and an absorber joint portion 10b and a male fastener joint portion 10d are formed.
- the first region B1 is a portion where the elastic member 11 does not exist as a result of the elastic member 11 contracting.
- the elastic member 11 is joined to at least one of the continuous body 114 and the continuous body 115 (here, both).
- the third region B3 is a portion located between the first region B1 and the second region B2.
- a space between the inner sheet 14 and the outer sheet 15 that communicates with the space in which the elastic member 11 of the second region B2 is arranged (here, the elastic member arrangement
- the maximum gap (referred to as a free space) is smaller than the diameter of the elastic member 11 (at its natural length) in a state where no tension is applied.
- the cutting device 300 cuts the elastic member 11, and the elastic member 11 is shrunk from the elastic member placement space in the first region B1 where the elastic member 11 was originally placed.
- the elastic member 11 is in a state where the elastic member 11 does not move, the sliding friction force generated between the elastic member 11 and at least one of the inner sheet 14 (continuum 114) and the outer sheet 15 (continuum 115) can attenuate the contraction speed of the elastic member 11. .
- the cutting device 300 cuts the elastic member 11 and the elastic member 11 shrinks from the elastic member placement space in the third region B3 where the elastic member 11 was originally placed, the elastic member 11 is no longer present.
- the contraction speed of the elastic member 11 can be attenuated by the sliding friction force generated between the elastic member 11 and at least one of the inner sheet 14 (continuum 114) and the outer sheet 15 (continuum 115).
- the elastic sheet manufacturing apparatus 100 of the present embodiment includes a forming device 200 as an example of a forming section, and a cutting device 300 as an example of a cutting section.
- the forming device 200 includes a continuous elastic sheet 116 in which a continuous continuous body 114, a continuous continuous body 115, and a continuous elastic member 11 disposed between the continuous body 114 and the continuous body 115 are integrated. form.
- the cutting device 300 cuts the elastic member 11 of the stretchable sheet continuous body 116.
- the forming apparatus 200 includes an anvil roll 210 as an example of a first bonding member, and an ultrasonic horn 230 as an example of a second bonding member.
- the anvil roll 210 supports the continuous body 114, the elastic member 11, and the continuous body 115, which are conveyed in the conveyance direction D.
- the ultrasonic horn 230 and the anvil roll 210 sandwich the continuous body 114, the elastic member 11, and the continuous body 115.
- the anvil roll 210 has a first protrusion 212a as an example of a first part and a first protrusion 212a as an example of a second part on an outer circumferential surface 211 as an example of a facing surface facing the ultrasonic horn 230 as a second joining member. It has a second protrusion portion 212b.
- the second protruding portion 212b is arranged adjacent to the first protruding portion 212a in the conveyance direction D.
- the ultrasonic horn 230 sandwiches the elastic member 11, the continuous body 114, and the continuous body 115 between the first protrusion 212a of the anvil roll 210, and joins the continuous body 114 and the continuous body 115.
- a restricting portion 116b is formed in the stretchable sheet continuous body 116.
- the ultrasonic horn 230 sandwiches the elastic member 11, the continuous body 114, and the continuous body 115 between the second protrusion 212b of the anvil roll 210, and the elastic member 11, the continuous body 114, and the continuous body 115 are connected to each other.
- a fixing portion 116a is formed in the stretchable sheet continuous body 116.
- the cutting device 300 cuts the elastic member 11 of the stretchable sheet continuous body 116 at the restriction portion 116b of the stretchable sheet continuous body 116 being conveyed. At the restricting portion 116b of the stretchable sheet continuous body 116, the continuous body 114 and the continuous body 115 and the elastic member 11 are not joined. Further, in the restricting portion 116b of the stretchable sheet continuous body 116, the contraction movement of the elastic member 11 cut by the cutting device 300 is restricted by the continuous body 114 and the continuous body 115.
- the manufacturing apparatus 100 for the wearing article 1 during the weakening process of cutting the elastic member 11, it is possible to suppress the occurrence of a problem in which the sheet and the elastic member 11 in the stretchable sheet continuum 116 become disconnected.
- the first protrusion 212a of the anvil roll 210 includes first groove forming portions 214, 215, and the second protrusion 212b of the anvil roll 210 includes the second groove forming portion. Includes portion 216.
- the first groove forming portions 214, 215 are formed with first grooves 214a, 215a extending along the conveying direction D into which the elastic member 11 and the continuous body 115 conveyed in the conveying direction D enter.
- a second groove 216a extending along the conveyance direction D is formed in the second groove forming portion 216, into which the elastic member 11 and the continuous body 115 conveyed in the conveyance direction D enter.
- the depth of the first grooves 214a, 215a is greater than the first total value, which is the sum of the diameter of the elastic member 11 and the thickness of the continuous body 115 transported in the transport direction D through the forming apparatus 200.
- the depth of the second groove 216a is greater than the first total value.
- the elastic member 11 and the continuous body 114 or the continuous body 115 are joined at the restricting portion 116b, and the elastic member 11 It is possible to suppress the occurrence of a situation where the elastic force remains.
- the depth of the first grooves 214a, 215a is the second groove, which is the sum of the diameter of the elastic member 11 and the thickness of the continuous body 115 when no tension is applied. Less than the total value.
- the continuous body 114 and the continuous body 115 restrict the rapid contraction movement of the elastic member 11, and the continuous body 114 and/or Alternatively, the occurrence of a problem in which the continuous body 115 and the elastic member 11 become disconnected can be suppressed.
- the width of the first grooves 214a, 215a in the width direction S of the anvil roll 210 is continuous with the diameter of the elastic member 11 being conveyed in the conveying direction D through the forming device 200. It is larger than the third total value, which is the sum of twice the thickness of the body 115.
- the width of the first grooves 214a, 215a in the width direction of the anvil roll 210 is smaller than the fourth total value, which is the sum of the diameter of the elastic member 11 in a state where no tension is applied and twice the thickness of the continuous body 115. .
- this manufacturing apparatus 100 for the wearing article 1 it is possible to suppress the occurrence of a situation in which the first grooves 214a and 215a obstruct the conveyance of the elastic member 11 and the continuous body 115.
- the manufacturing apparatus 100 of this wearing article 1 when the elastic member 11 is cut by the cutting device 300, the rapid contraction movement of the elastic member 11 is restricted by the continuous body 114 and the continuous body 115, and the fixing part 116a In this case, it is possible to suppress the occurrence of a problem in which the continuum 114 and/or the continuum 115 and the elastic member 11 become disconnected.
- the method of manufacturing the wearing article 1 of this embodiment includes a forming step and a cutting step.
- the continuous continuous body 114, the continuous continuous body 115, and the continuous elastic member 11 disposed between the continuous body 114 and the continuous body 115 are integrated to form the stretchable sheet continuous body 116. is formed.
- the cutting process the elastic member 11 of the stretchable sheet continuous body 116 is cut.
- the forming process includes a conveying process, a first forming process, and a second forming process. In the conveying process, the continuous body 114, the continuous body 115, and the elastic member 11 are conveyed in the conveying direction D with the elastic member 11 being disposed between the continuous body 114 and the continuous body 115.
- an anvil roll 210 which is an example of a first joining member that supports the continuous body 114, the elastic member 11, and the continuous body 115, which are conveyed in the conveying direction D, and an anvil roll 210, which is an example of a second connecting member, are used.
- a continuous stretchable sheet is formed.
- a fixing portion 116a is formed on the body 116.
- the elastic member 11, the continuous body 114, and the continuous body 115 are sandwiched between the anvil roll 210 and the ultrasonic horn 230, and the continuous body 114 and the continuous body 115 are joined to form a continuous elastic sheet.
- a restriction portion 116b is formed in the body 116.
- the restricting portion 116b of the stretchable sheet continuous body 116 is formed at a position adjacent to the fixed portion 116a of the stretchable sheet continuous body 116.
- the elastic member 11 of the stretchable sheet continuous body 116 is cut at the restriction portion 116b of the stretchable sheet continuous body 116.
- the continuous body 114 and the continuous body 115 and the elastic member 11 are not joined. Further, in the restricting portion 116b of the stretchable sheet continuous body 116, the contraction movement of the elastic member 11 cut in the cutting process is restricted by the continuous body 114 and the continuous body 115.
- the wearing article 1 of this embodiment is a wearing article provided with an elastic sheet.
- a stretchable sheet manufactured by the stretchable sheet manufacturing apparatus 100 is applied to the waist member 10 disposed around the wearer's waist.
- the elastic sheet applied to the waist member 10 includes at least an inner sheet 14, an outer sheet 15, and an elastic member 11.
- the elastic member 11 extends in a first direction (here, the waist circumference direction along the wearer's torso) and is disposed between the inner sheet 14 and the outer sheet 15.
- the elastic sheet applied to the waist member 10 includes a first portion (first region B1) and a second portion (second region B2) in the first direction.
- the elastic member 11 does not exist in the first region B1.
- the elastic member 11 is joined to at least one of the inner sheet 14 and the outer sheet 15.
- the maximum space between the inner sheet 14 and the outer sheet 15 that communicates with the space in which the elastic member 11 of the third region B3 is disposed There is a portion where the gap is smaller than the diameter of the elastic member 11 (at its natural length) in a state where no tension is applied.
- the contraction movement of the elastic member 11 can be restricted by the inner sheet 14 and the outer sheet 15 in the first region B1. Therefore, in the wearing article 1 of the present invention, it is possible to suppress the occurrence of a problem in which the elastic member 11 and the sheet piece become unfixed in the second region B2 of the waist member.
- the elastic sheet applied to the waist member 10 is located between the first region B1 and the second region B2 in the first direction (here, the waist direction along the wearer's torso).
- a third portion (third region B3) is included.
- the third region B3 in a cross-sectional view taken in a direction perpendicular to the first direction, the maximum space between the inner sheet 14 and the outer sheet 15 that communicates with the space in which the elastic member 11 of the second region B2 is disposed.
- There is a portion where the gap is smaller than the diameter of the elastic member 11 (at its natural length) in a state where no tension is applied.
- the contraction movement of the elastic member 11 can be restricted by the inner sheet 14 and the outer sheet 15 in the third region B3. Therefore, in the wearing article 1 of the present invention, it is possible to suppress the occurrence of a problem in which the elastic member 11 and the sheet piece become unfixed in the second region B2 of the waist member.
- FIG. 14 is a diagram schematically showing the forming apparatus 200A.
- the forming apparatus 200A has many similar points to the forming apparatus 200 of the above embodiment, so here, the differences between the forming apparatus 200A and the forming apparatus 200 will be mainly described.
- the forming apparatus 200A has two or more second bonding members arranged along the conveyance direction D.
- the forming apparatus 200A in addition to the ultrasonic horn 230 (second joining member on the most upstream side), the forming apparatus 200A includes an ultrasonic horn 230A (most downstream side) disposed downstream of the ultrasonic horn 230 in the conveyance direction D. side second joining member). Both the ultrasonic horn 230 and the ultrasonic horn 230A sandwich the continuous body 114, the continuous body 115, and the elastic member 11, which are conveyed in the conveyance direction D, between the anvil roll 210 as the first joining member.
- the ultrasonic horn 230 and the ultrasonic horn 230A may be, for example, a horn for ultrasonic welding as depicted in FIG. 14, or may be a roll with a built-in heater.
- the ultrasonic horn 230A as an example of the second bonding member on the most downstream side is the ultrasonic horn 230A as an example of the second bonding member on the most upstream side in the conveying direction D of the continuous body 114, the elastic member 11, and the continuous body 115. It is located downstream.
- the position where the ultrasonic horn 230A and the anvil roll 210 face each other is 180° apart from the position where the ultrasonic horn 230 and the anvil roll 210 face each other. .
- the angle between the position where the anvil roll 210 faces may be less than 180° or more than 180°.
- the main functional difference between the forming device 200A and the forming device 200 is that the forming device 200A is capable of bonding the continuous body 114 and the continuous body 115, and connecting the elastic member 11 and at least one of the continuous body 114 and the continuous body 115. This bonding is performed in two stages: temporary bonding using an ultrasonic horn 230 and main bonding using an ultrasonic horn 230A.
- the strength of the elastic member 11 may decrease due to heat, and the elastic member 11 may be cut. If the elastic member 11 were to be cut, the elastic member 11 would return to the upstream side in the conveyance direction due to the restoring force of the elastic member 11, and the elastic member 11 would be repositioned between the continuous body 114 and the continuous body 115. Therefore, it may be necessary to stop the operation of the manufacturing apparatus 100.
- the elastic member 11 is temporarily joined between the continuum 114 and the continuum 115 under conditions in which the elastic member 11 is unlikely to be cut, and then the continuum 114 and the continuum 115 are The elastic member 11 is firmly joined (mainly joined) by welding. With this configuration, even if the elastic member 11 is cut during the main joining, the elastic member 11 is temporarily joined between the continuous body 114 and the continuous body 115, and the elastic member 11 is It is possible to suppress the occurrence of an event in which the member 11 moves upstream in the conveyance direction.
- temporary bonding means a state in which the members to be bonded are releasably bonded to each other.
- temporary bonding means a weak bonded state in which mutual material destruction does not occur when the members to be bonded are separated from each other.
- mainly joined means a state in which the members to be joined are irremovably joined to each other.
- main bonding means a strong bonded state in which if the members to be bonded are separated from each other, at least one of the members to be separated will undergo material destruction.
- the seal strength between the ultrasonic horn 230A and the anvil roll 210 is set to be greater than the seal strength between the ultrasonic horn 230 and the anvil roll 210.
- the ultrasonic horn 230 on the most upstream side in the transport direction D sandwiches the continuous body 114, the elastic member 11, and the continuous body 115 with a relatively weak pressing force (first pressing force) between it and the anvil roll 210. Then, by ultrasonic welding, a temporarily joined portion is formed in which at least one of the elastic member 11, the continuous body 114, and the continuous body 115 is temporarily joined.
- the ultrasonic horn 230A on the most downstream side in the conveyance direction D holds the temporarily joined portion between it and the anvil roll 210 with a relatively strong pressing force (a second pressing force larger than the first pressing force).
- the elastic member 11 and at least one of the continuous body 114 and the continuous body 115 are permanently joined by ultrasonic welding.
- the first pressing force is 700 to 800N
- the second pressing force is 1250N, although the numerical values are not limited.
- the continuous body 114 and the elastic member 11 are connected between the ultrasonic horns 230 and 230A and the anvil roll 210.
- the force that pinches the continuum 115 may be constant, and the temperature of the heater may be set low for the ultrasonic horn 230 and high for the ultrasonic horn 230A.
- the stretchable sheet continuous body obtained by performing main bonding using the ultrasonic horn 230A may be the same as the stretchable sheet continuous body 116 described in the above embodiment.
- this forming apparatus 200A is also useful in manufacturing a continuous stretchable sheet that does not have the fixing part 116a and the restricting part 116b described in the above embodiment.
- the features of this forming device 200A are useful even if the forming device 200A does not have the first protruding portion 212a and the second protruding portion 212b.
- a method for manufacturing a stretchable sheet in the forming apparatus 200A will be described.
- the method for manufacturing an elastic sheet includes a continuous body 114 as an example of a continuous first sheet, a continuous body 115 as an example of a continuous second sheet, and a continuous body disposed between the continuous body 114 and the continuous body 115.
- the elastic member 11 is integrated with the elastic member 11 to form a continuous stretchable sheet 116.
- the forming process includes a conveying process, a first forming process, and a second forming process.
- the continuous body 114, the continuous body 115, and the elastic member 11 are conveyed in the conveying direction D with the elastic member 11 being disposed between the continuous body 114 and the continuous body 115.
- an anvil roll 210 as an example of a first joining member that supports the continuous body 114, the elastic member 11, and the continuous body 115, which are transported in the transport direction D, and an example of the upstream second joining member
- the elastic member 11, the continuous body 114, and the continuous body 115 are sandwiched between the ultrasonic horn 230 as Form.
- the temporary bonded portion is sandwiched between the anvil roll 210 and the ultrasonic horn 230A as an example of the downstream second bonding member, and at least the elastic member 11, the continuous body 114, and the continuous body 115 are One end is permanently joined to form a continuous stretchable sheet 116.
- the manufacturing apparatus 100 for the wearing article 1 includes a continuous body 114 as an example of a continuous first sheet, a continuous body 115 as an example of a continuous second sheet, and a continuous body 114 disposed between the continuous body 114 and the continuous body 115.
- a forming apparatus 200A is provided as an example of a forming section that forms a continuous elastic member 116 that is integrated with a continuous elastic member 11.
- the forming apparatus 200A includes an anvil roll 210 as an example of a first joining member, and ultrasonic horns 230 and 230A as an example of a second joining member.
- the anvil roll 210 supports the continuous body 114, the elastic member 11, and the continuous body 115, which are conveyed in the conveyance direction D.
- Two or more (two in this embodiment) second joining members are arranged along the conveyance direction D.
- the ultrasonic horns 230 and 230A of the second joining member sandwich the continuous body 114, the elastic member 11, and the continuous body 115 with the anvil roll 210.
- At least the ultrasonic horn 230 on the most upstream side in the transport direction D sandwiches the continuous body 114, the elastic member 11, and the continuous body 115 between it and the anvil roll 210, and at least One side is temporarily joined to form a temporarily joined part.
- the ultrasonic horn 230A inserts the temporarily joined portion between the anvil roll 210 and permanently joins the elastic member 11 and at least one of the continuous body 114 and the continuous body 115 to form the stretchable sheet continuous body 116.
- the elastic member 11 is cut while the elastic member 11 is being joined to at least one of the continuous body 114 and the continuous body 115, and the elastic member 11 is pulled back upstream by the restoring force. It is possible to suppress the occurrence of a problem in which the manufacturing apparatus 100 for the wearing article 1 needs to be stopped in order to rearrange the wearable article 1.
- the second joining member on the most upstream side is used for forming a temporary joining part
- at least the second joining member on the most downstream side is used for main joining of the elastic member and at least one of the first sheet and the second sheet. It is fine as long as it is used.
- the elastic member 11 and the continuous body 114 and the continuous body 115 may not be joined. Even in such a mode, even if the elastic member 11 is cut during main joining, the diameter of the elastic member 11 will increase when the elastic member 11 is cut and tries to return to its natural length. By sandwiching the elastic member 11 at the joint between the continuous body 114 and the continuous body 115, it is possible to suppress the occurrence of a phenomenon in which the elastic member 11 contracts and moves upstream in the conveyance direction.
- the ultrasonic horn 230 and the ultrasonic horn 230A are arranged with respect to one anvil roll 210 as the first joining member, but the structure of the forming apparatus is as follows. Not limited.
- the forming device may have two or more first joining members arranged along the conveyance direction D.
- the forming apparatus 200B may also include an anvil roll 210A disposed at the most downstream side in the conveyance direction D.
- the ultrasonic horn 230 sandwiches the continuous body 114, the elastic member 11, and the continuous body 115 with the anvil roll 210, and at least the elastic member 11, the continuous body 114, and the continuous body 115.
- One side is temporarily joined to form a temporarily joined part.
- the ultrasonic horn 230A inserts the temporarily joined portion between the anvil roll 210A and permanently joins the elastic member 11 and at least one of the continuous body 114 and the continuous body 115, and expands and contracts.
- a continuous sheet 116 is formed.
- the anvil roll 210 and the anvil roll 210A have the same pattern of protrusions 212 on the outer peripheral surface 211, and the continuous body 115 is located at the same (corresponding) position on the anvil roll 210 and the anvil roll 210A.
- the forming device 200B is designed to make contact. Specifically, if a certain portion of the continuum 115 contacts the first protrusion 212a of the anvil roll 210, that portion of the continuum 115 also contacts the first protrusion 212a of the anvil roll 210A.
- the forming apparatus 200B is designed to.
- the first joining member is described as an anvil roll, but the first joining member is not limited to a roll.
- the first bonding member may be a flat plate-like member provided with a protrusion 212 on the surface facing the second bonding member, as shown in FIG.
- the elastic sheet manufacturing apparatus includes a forming section and a cutting section.
- the forming section forms a continuous stretchable sheet in which a continuous first sheet, a continuous second sheet, and a continuous elastic member disposed between the first sheet and the second sheet are integrated.
- the cutting section cuts the elastic member of the stretchable sheet continuous body.
- the forming portion includes a first joining member and a second joining member.
- the first joining member supports the first sheet, the elastic member, and the second sheet that are transported in the transport direction.
- the second joining member sandwiches the first sheet, the elastic member, and the second sheet with the first joining member.
- the first joining member has a first part and a second part on an opposing surface facing the second joining member.
- the second part is disposed adjacent to the first part in the conveying direction of the first sheet, the elastic member, and the second sheet that are supported by the first joining member and conveyed.
- the second joining member sandwiches the elastic member, the first sheet, and the second sheet between the first part of the first joining member and joins the first sheet and the second sheet, thereby making the elastic sheet continuous. Forms a restriction in the body.
- the second bonding member sandwiches the elastic member, the first sheet, and the second sheet between the second portion of the first bonding member, and the elastic member and at least one of the first sheet and the second sheet. By joining them together, a fixing part is formed in the stretchable sheet continuous body.
- the cutting section cuts the elastic member of the continuous stretchable sheet at the limiting portion of the continuous stretchable sheet being conveyed.
- the first sheet, the second sheet, and the elastic member are not joined. Furthermore, in the restriction section of the stretchable sheet continuous body, the contraction movement of the elastic member cut by the cutting section is restricted by the first sheet and the second sheet.
- the elastic member and the first sheet or the second sheet are joined at the restriction part, and the elastic force of the elastic member is applied to the part where the weakening process of the elastic sheet continuous body is desired. It is possible to suppress the occurrence of a situation where the problem remains.
- the elastic sheet manufacturing apparatus is the elastic sheet manufacturing apparatus according to the second aspect, in which the depth of the first groove is the diameter of the elastic member in a state where no tension is applied and the thickness of the second sheet. is smaller than the second total value, which is the sum of .
- the elastic sheet manufacturing apparatus it is possible to suppress the occurrence of a situation in which the first groove obstructs the conveyance of the elastic member or the second sheet.
- the elastic sheet manufacturing apparatus when the elastic member is cut by the cutting section, the rapid contraction movement of the elastic member is restricted by the first sheet and the second sheet, and the second sheet is It is possible to suppress the occurrence of a problem in which the first sheet and/or the second sheet and the elastic member become disconnected from each other.
- the apparatus for manufacturing an elastic sheet for a wear article includes a continuous first sheet, a continuous second sheet, and a continuous elastic member disposed between the first sheet and the second sheet.
- a forming part is provided for forming a continuous stretchable sheet.
- the forming portion includes a first joining member and a second joining member.
- the first joining member supports the first sheet, the elastic member, and the second sheet that are transported in the transport direction.
- Two or more second joining members are arranged along the transport direction. At least the second joining member on the most upstream side in the conveyance direction sandwiches the first sheet, the elastic member, and the second sheet between it and the first joining member, and the elastic member and at least one of the first sheet and the second sheet are connected to each other. form a temporarily joined part.
- At least the second joining member on the most downstream side in the conveyance direction inserts a temporary joining part between it and the first joining member, and permanently joins the elastic member and at least one of the first sheet and the second sheet, and expands and contracts.
- the elastic member, the first sheet and the second sheet are conveyed in the conveying direction between the first joining member supporting the first sheet, the elastic member and the second sheet, and the second joining member.
- a fixed portion is formed in the stretchable sheet continuous body.
- the elastic member, the first sheet, and the second sheet are sandwiched between the first joining member and the second joining member, and the first sheet and the second sheet are joined, thereby making the elastic sheet continuous. Forms a restriction in the body.
- the elastic member of the continuous elastic sheet body is cut at the limiting portion of the continuous elastic sheet body.
- the limiting portion of the stretchable sheet continuous body is formed at a position adjacent to the fixed portion of the stretchable sheet continuous body.
- the first sheet, the second sheet, and the elastic member are not joined.
- the restriction portion of the stretchable sheet continuous body the contraction movement of the elastic member cut in the cutting process is restricted by the first sheet and the second sheet.
- a method for manufacturing a stretchable sheet according to an eighth aspect is a method of manufacturing a stretchable sheet by integrating a continuous first sheet, a continuous second sheet, and a continuous elastic member disposed between the first sheet and the second sheet.
- the method includes a forming step of forming a continuous sheet.
- the forming process includes a conveying process, a first forming process, and a second forming process. In the conveyance process, the first sheet, the second sheet, and the elastic member are conveyed in the conveyance direction with the elastic member disposed between the first sheet and the second sheet.
- an elastic member is placed between a first bonding member that supports the first sheet, the elastic member, and the second sheet, and a second upstream bonding member that is conveyed in the conveyance direction. and the second sheet, thereby forming a temporary joint portion in which the elastic member and at least one of the first sheet and the second sheet are temporarily joined.
- the temporary bonding portion is sandwiched between the first bonding member and the downstream second bonding member disposed downstream of the upstream second bonding member in the conveying direction, and the elastic member is and at least one of the first sheet and the second sheet are permanently joined to form a continuous stretchable sheet.
- the elastic member is cut during joining with at least one of the first sheet and the second sheet, and the elastic member is pulled back upstream by the restoring force. It is possible to suppress the occurrence of a problem in which the elastic sheet manufacturing apparatus needs to be stopped in order to rearrange the members.
- the wearing article according to the ninth aspect includes an elastic sheet.
- the elastic sheet includes at least a first sheet piece, a second sheet piece, and an elastic member.
- the elastic member extends in the first direction and is disposed between the first sheet piece and the second sheet piece.
- the elastic sheet includes a first portion and a second portion in the first direction. No elastic member is present in the first portion.
- the elastic member is joined to at least one of the first sheet piece and the second sheet piece.
- the first part includes a maximum gap between the first sheet piece and the second sheet piece, which communicate with the space in which the elastic member of the third part is arranged, in a cross-sectional view taken in a direction perpendicular to the first direction. However, there is a portion where the diameter is smaller than the diameter of the elastic member in a state where no tension is applied.
- the contraction movement of the elastic member can be restricted by the first sheet piece and the second sheet piece in the first portion. Therefore, in the wearing article of the present invention, it is possible to suppress the occurrence of a problem in which the elastic member and the sheet piece become unfixed in the second portion of the waist member.
- the wearing article according to the tenth aspect is the wearing article according to the ninth aspect, in which the stretch sheet further includes a third portion disposed between the first portion and the second portion in the first direction.
- the third portion includes a maximum gap between the first sheet piece and the second sheet piece that communicate with the space in which the elastic member of the second portion is arranged in a cross-sectional view taken in a direction perpendicular to the first direction.
- the contraction movement of the elastic member can be restricted by the first sheet piece and the second sheet piece in the third portion. Therefore, in the wearing article of the present invention, it is possible to suppress the occurrence of a problem in which the elastic member and the sheet piece become unfixed in the second portion of the waist member.
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Abstract
Description
本発明に係る伸縮シートを適用する着用物品の概要を、図1~図4を参照して説明する。図1は、リファスナブルタイプの着用物品1の、着用時の状態を示す前面図である。図2は、着用物品1の、着用時の状態を示す背面図である。図3は、着用物品1を広げた状態を示す、着用物品1の展開図である。図4は、着用物品1の分解斜視図である。
伸縮シートの製造装置100を含む着用物品1の製造装置1000、及び、伸縮シート(伸縮シート連続体)の製造工程を含む着用物品1の製造方法について、図5を参照しながら説明する。
工程P1では、図5に示すように、複数の外側シート15が連続するシートの連続体115(第2シートの一例)がMD方向に搬送されるとともに、連続体115上に連続する伸長状態の弾性部材11がMD方向に沿って直線状に配置される。連続体115には、複数の連続する弾性部材11が、互いに胴回り直交方向(CD方向)に間隔を空けて配置される。また、工程P1では、図5に示すように、複数の内側シート14の連続する連続体114(第1シートの一例)がMD方向に搬送され、弾性部材11を上部から覆うように連続体114が連続体115上に配置される。
工程P2では、伸縮シート連続体116の、吸収体20が配置される吸収体接合部10b及び雄ファスナ12が配置される雄ファスナ接合部10dに対応する位置において、弾性部材11に対し弱化処理が施される。ここでの弱化処理は、伸縮シート連続体116の弾性部材11を切断装置300で切断する処理である。なお、切断装置300は、刃を用いて弾性部材11を切断するギャザーカッタでもよいし、熱を加えて弾性部材11を溶融させて切断するエンボスロール(ヒートエンボス)装置であってもよい。
工程P3~工程P7は、吸収体20を製造する工程の一例である。
工程P8~工程P11は、着用物品1を組み立てるための工程の一例である。
伸縮シートの製造装置100の形成装置200について、図6~図13を参照して説明する。図6は、形成装置200を概略的に示す図である。図7は、形成装置200のアンビルロール210の外周面211の一部を平面状に展開した模式図である。図8は、図7中の円αで囲んだ第2溝形成部分216(第2突条部212bの一部)を、アンビルロール210の径方向に沿って見た図と、この図のX1-X1矢視における第2溝形成部分216の断面図とを、を示す。図9は、図7中の円βで囲んだ第1溝形成部分214(第1幅方向突条部212aaの一部)を、アンビルロール210の径方向に沿って見た図と、この図のX2-X2矢視における第1溝形成部分214の断面図と、を示す。図10は、図7中の楕円γで囲んだ第1溝形成部分215(第1周方向突条部212ab)を、アンビルロール210の径方向に沿って見た図と、この図のX3-X3矢視における第1溝形成部分215の断面図と、を示す。なお、図10の第1溝形成部分215をアンビルロール210の径方向に沿って見た図では、第1溝形成部分215のアンビルロール210の周方向Rにおける長さを短縮して描画している。図11は、伸縮シートの製造装置100(形成装置200及び切断装置300)により形成される伸縮シート連続体116を模式的に示す図である。図12は、図11の、B3で示す領域(第3領域B3)を、伸縮シート連続体116の搬送方向D(着用物品1に形成された際の腰回り方向)に直交する方向に切断した状態を示す部分断面図である。図13は、図11の、B1で示す領域(第1領域B1)を、伸縮シート連続体116の搬送方向D(着用物品1に形成された際の腰回り方向)に直交する方向に切断した状態を示す部分断面図である。なお、図6~図13は、説明のための図面であって、実際の各構成の寸法や形状を正確に表した図面ではない。また、図6~図13では、図面が煩雑になるのを避けるため、一部の参照符号を省略している。
(4-1)
本実施形態の伸縮シートの製造装置100は、形成部の一例としての形成装置200と、切断部の一例としての切断装置300と、を備える。形成装置200は、連続する連続体114と、連続する連続体115と、連続体114と連続体115との間に配置される連続する弾性部材11と、が一体化された伸縮シート連続体116を形成する。切断装置300は、伸縮シート連続体116の弾性部材11を切断する。形成装置200は、第1接合部材の一例としてのアンビルロール210と、第2接合部材の一例としての超音波ホーン230と、を有する。アンビルロール210は、搬送方向Dに搬送される、連続体114、弾性部材11、及び連続体115を支持する。超音波ホーン230は、アンビルロール210との間に、連続体114、弾性部材11、及び連続体115を挟み込む。アンビルロール210は、第2接合部材としての超音波ホーン230と対向する対向面の一例としての外周面211に、第1部の一例としての第1突条部212aと、第2部の一例としての第2突条部212bと、を有する。第2突条部212bは、搬送方向Dにおいて、第1突条部212aと隣接して配置される。超音波ホーン230は、アンビルロール210の第1突条部212aとの間で、弾性部材11、連続体114及び連続体115を挟み込んで、連続体114と連続体115とを接合することで、伸縮シート連続体116に制限部116bを形成する。超音波ホーン230は、アンビルロール210の第2突条部212bとの間で、弾性部材11、連続体114、及び連続体115を挟み込んで、弾性部材11と、連続体114及び連続体115の少なくとも一方と、を接合することで、伸縮シート連続体116に固定部116aを形成する。切断装置300は、搬送される伸縮シート連続体116の制限部116bにおいて、伸縮シート連続体116の弾性部材11を切断する。伸縮シート連続体116の制限部116bでは、連続体114及び連続体115と、弾性部材11と、は非接合である。また、伸縮シート連続体116の制限部116bでは、切断装置300により切断された弾性部材11の収縮移動が連続体114及び連続体115により制限される。
好ましい実施形態の着用物品1の製造装置100では、アンビルロール210の第1突条部212aは第1溝形成部分214,215を含み、アンビルロール210の第2突条部212bは第2溝形成部分216を含む。第1溝形成部分214,215には、搬送方向Dに搬送される弾性部材11及び連続体115が入り込む、搬送方向Dに沿って延びる第1溝214a,215aが形成されている。第2溝形成部分216には、搬送方向Dに搬送される弾性部材11及び連続体115が入り込む、搬送方向Dに沿って延びる第2溝216aが形成されている。第1溝214a,215aの深さは、形成装置200を搬送方向Dに搬送される弾性部材11の直径と連続体115の厚みとの合計である第1合計値より大きい。第2溝216aの深さは、第1合計値より大きい。
好ましい実施形態の着用物品1の製造装置100では、第1溝214a,215aの深さは、張力が作用していない状態の弾性部材11の直径と連続体115の厚みとの合計である第2合計値より小さい。
好ましい実施形態の着用物品1の製造装置100では、アンビルロール210の幅方向Sにおける第1溝214a,215aの幅は、形成装置200を搬送方向Dに搬送されている弾性部材11の直径と連続体115の厚みの2倍との合計である第3合計値より大きい。アンビルロール210の幅方向における第1溝214a,215aの幅は、張力が作用していない状態の弾性部材11の直径と連続体115の厚みの2倍との合計である第4合計値より小さい。
本実施形態の着用物品1の製造方法は、形成工程と、切断工程と、を備える。形成工程では、連続する連続体114と、連続する連続体115と、連続体114と連続体115との間に配置される連続する弾性部材11と、が一体化されて、伸縮シート連続体116が形成される。切断工程では、伸縮シート連続体116の弾性部材11が切断される。形成工程には、搬送工程と、第1形成工程と、第2形成工程と、を含む。搬送工程では、連続体114と連続体115との間に弾性部材11が配置されている状態で、連続体114、連続体115及び弾性部材11が搬送方向Dに搬送される。第1形成工程では、搬送方向Dに搬送される、連続体114、弾性部材11、及び連続体115を支持する第1接合部材の一例であるアンビルロール210と、第2接続部材の一例である超音波ホーン230との間に、弾性部材11、連続体114及び連続体115を挟み込んで、弾性部材11と、連続体114及び連続体115の少なくとも一方と、を接合することで、伸縮シート連続体116に固定部116aを形成する。第2形成工程では、アンビルロール210と超音波ホーン230との間に弾性部材11、連続体114及び連続体115を挟み込んで、連続体114と連続体115とを接合することで、伸縮シート連続体116に制限部116bを形成する。伸縮シート連続体116の制限部116bは、伸縮シート連続体116の固定部116aに隣接する位置に形成される。切断工程では、伸縮シート連続体116の制限部116bにおいて、伸縮シート連続体116の弾性部材11が切断される。伸縮シート連続体116の制限部116bでは、連続体114及び連続体115と、弾性部材11と、は非接合である。また、伸縮シート連続体116の制限部116bでは、切断工程で切断された弾性部材11の収縮移動が、連続体114及び連続体115により制限される。
本実施形態の着用物品1は、伸縮シートを備えた着用物品である。特に、着用物品1では、伸縮シートの製造装置100により製造された伸縮シートが、着用者の胴回りに配置される胴回り部材10に適用されている。胴回り部材10に適用される伸縮シートは、内側シート14と、外側シート15と、弾性部材11と、を少なくとも含む。弾性部材11は、第1方向(ここでは着用者の胴に沿う胴回り方向)に延び、内側シート14と外側シート15との間に配置される。胴回り部材10に適用される伸縮シートは、第1方向において、第1部分(第1領域B1)と、第2部分(第2領域B2)と、を含む。第1領域B1には、弾性部材11が存在しない。第2領域B2では、弾性部材11が、内側シート14及び外側シート15の少なくとも一方と接合されている。第1領域B1には、第1方向と直交する方向に切断した断面視において、第3領域B3の弾性部材11が配置される空間と連通する内側シート14及び外側シート15の間の空間の最大隙間が、張力が作用していない状態における(自然長の)弾性部材11の直径よりも小さい部分が存在する。
本実施形態の着用物品1では、胴回り部材10に適用される伸縮シートは、第1方向(ここでは着用者の胴に沿う胴回り方向)において、第1領域B1と第2領域B2との間に配置される第3部分(第3領域B3)を含む。第3領域B3には、第1方向と直交する方向に切断した断面視において、第2領域B2の弾性部材11が配置される空間と連通する内側シート14及び外側シート15の間の空間の最大隙間が、張力が作用していない状態における(自然長の)弾性部材11の直径よりも小さい部分が存在する。
上記実施形態に係る変形例について説明する。
変形例Aに係る伸縮シートの製造装置100の伸縮シート連続体116の形成装置200Aについて、図14を参照しながら説明する。図14は、形成装置200Aを概略的に示す図である。
変形例Aでは、仮接合部分において、弾性部材11と、連続体114及び連続体115の少なくとも一方とが、接合される。ただし、仮接合部分では、弾性部材11と、連続体114及び連続体115の少なくとも一方とが接合されなくてもよい。
変形例Aの形成装置200Aでは、第1接合部材としての1つのアンビルロール210に対して、超音波ホーン230及び超音波ホーン230Aが配置されているが、形成装置の構成はこのような構成に限定されない。形成装置は、搬送方向Dに沿って配置される2つ以上の第1接合部材を有していてもよい。
上記実施形態では、第1接合部材をアンビルロールとして説明したが、第1接合部材はロールに限定されるものではない。例えば、第1接合部材は、図7に示すような、第2接合部材との対向面に突条部212が設けられた、平板状の部材であってもよい。
10 胴回り部材(伸縮シート)
11 弾性部材
14 内側シート(第1シート片)
15 外側シート(第2シート片)
100 伸縮シートの製造装置
114 連続体(第1シート)
115 連続体(第2シート)
116 伸縮シート連続体
116a 固定部
116b 制限部
200 形成装置(形成部)
210 アンビルロール(第1接合部材,最上流側の第1接合部材)
210A アンビルロール(第1接合部材,最下流側の第1接合部材)
211 外周面(対向面)
212a 第1突条部(第1部)
212b 第2突条部(第2部)
214 第1溝形成部分
214a 第1溝
215 第1溝形成部分
215a 第1溝
216 第2溝形成部分
216a 第2溝
230 超音波ホーン(第2接合部材、上流側第2接合部分)
230A 超音波ホーン(第2接合部材、下流側第2接合部分)
300 切断装置(切断部)
B1 第1領域(第1部分)
B2 第2領域(第2部分)
B3 第3領域(第3部分)
D 搬送方向
S 幅方向
Claims (10)
- 連続する第1シートと、連続する第2シートと、前記第1シートと前記第2シートとの間に配置される連続する弾性部材と、が一体化された伸縮シート連続体を形成する形成部と、
前記伸縮シート連続体の前記弾性部材を切断する切断部と、
を備え、
前記形成部は、搬送方向に搬送される、前記第1シート、前記弾性部材、及び前記第2シートを支持する第1接合部材と、前記第1接合部材との間に前記第1シート、前記弾性部材及び前記第2シートを挟み込む第2接合部材と、を有し、
前記第1接合部材は、前記第2接合部材と対向する対向面に、第1部と、前記搬送方向において、前記第1部と隣接して配置される第2部とを有し、
前記第2接合部材は、
前記第1接合部材の前記第1部との間で、前記弾性部材、前記第1シート及び前記第2シートを挟み込んで、前記第1シートと前記第2シートとを接合することで、前記伸縮シート連続体に制限部を形成し、
前記第1接合部材の前記第2部との間で、前記弾性部材、前記第1シート及び前記第2シートを挟み込んで、前記弾性部材と、前記第1シート及び前記第2シートの少なくとも一方と、を接合することで、前記伸縮シート連続体に固定部を形成し、
前記切断部は、搬送される前記伸縮シート連続体の前記制限部において、前記伸縮シート連続体の前記弾性部材を切断し、
前記制限部では、前記第1シート及び前記第2シートと、前記弾性部材と、は非接合であって、かつ、前記切断部により切断された前記弾性部材の収縮移動が前記第1シート及び前記第2シートにより制限される、
伸縮シートの製造装置。 - 前記第1部は、前記搬送方向に搬送される前記弾性部材及び前記第2シートが入り込む、前記搬送方向に沿って延びる第1溝が形成されている、第1溝形成部分を含み、
前記第2部は、前記搬送方向に搬送される前記弾性部材及び前記第2シートが入り込む、前記搬送方向に沿って延びる第2溝が形成されている、第2溝形成部分を含み、
前記第1溝の深さは、前記形成部を前記搬送方向に搬送される前記弾性部材の直径と前記第2シートの厚みとの合計である第1合計値より大きく、
前記第2溝の深さは、前記第1合計値より小さい、
請求項1に記載の伸縮シートの製造装置。 - 前記第1溝の深さは、張力が作用していない状態の前記弾性部材の直径と前記第2シートの厚みとの合計である第2合計値より小さい、
請求項2に記載の伸縮シートの製造装置。 - 前記第1接合部材の幅方向における前記第1溝の幅は、
前記形成部を前記搬送方向に搬送されている前記弾性部材の直径と前記第2シートの厚みの2倍との合計である第3合計値より大きく、
張力が作用していない状態の前記弾性部材の直径と前記第2シートの厚みの2倍との合計である第4合計値より小さい、
請求項2又は3に記載の伸縮シートの製造装置。 - 連続する第1シートと、連続する第2シートと、前記第1シートと前記第2シートとの間に配置される連続する弾性部材と、が一体化された伸縮シート連続体を形成する形成部を備えた伸縮シートの製造装置であって、
前記形成部は、
搬送方向に搬送される、前記第1シート、前記弾性部材、及び前記第2シートを支持する第1接合部材と、
前記第1接合部材との間に前記第1シート、前記弾性部材及び前記第2シートを挟み込む前記搬送方向に沿って2つ以上配置される第2接合部材と、
を有し、
少なくとも前記搬送方向の最上流側の前記第2接合部材は、前記第1接合部材との間に前記第1シート、前記弾性部材及び前記第2シートを挟み込んで、前記弾性部材と前記第1シート及び前記第2シートの少なくとも一方とが仮接合された仮接合部分を形成し、
少なくとも前記搬送方向の最下流側の前記第2接合部材は、前記第1接合部材との間に前記仮接合部分を挟み込んで、前記弾性部材と前記第1シート及び前記第2シートの少なくとも一方とを本接合して、前記伸縮シート連続体を形成する、
伸縮シートの製造装置。 - 前記第1接合部材は、少なくとも、前記搬送方向の最上流側の前記第1接合部材と、前記搬送方向の最下流側の前記第1接合部材と、の2つを含み、
前記最上流側の前記第2接合部材は、前記最上流側の前記第1接合部材との間に前記第1シート、前記弾性部材及び前記第2シートを挟み込んで、前記弾性部材と前記第1シート及び前記第2シートの少なくとも一方とが仮接合された前記仮接合部分を形成し、
前記最下流側の前記第2接合部材は、前記最下流側の前記第1接合部材との間に前記仮接合部分を挟み込んで、前記弾性部材と前記第1シート及び前記第2シートの少なくとも一方とを本接合して、前記伸縮シート連続体を形成する、
請求項5に記載の伸縮シートの製造装置。 - 連続する第1シートと、連続する第2シートと、前記第1シートと前記第2シートとの間に配置される連続する弾性部材と、を一体化して伸縮シート連続体を形成する形成工程と、
前記伸縮シート連続体の前記弾性部材を切断する切断工程と、
を備えた、伸縮シートの製造方法であって、
前記形成工程には、
前記第1シートと前記第2シートとの間に前記弾性部材が配置されている状態で、前記第1シート、前記第2シート及び前記弾性部材を搬送方向に搬送する搬送工程と、
前記搬送方向に搬送される、前記第1シート、前記弾性部材、及び前記第2シートを支持する第1接合部材と、第2接合部材と、の間に前記弾性部材、前記第1シート及び前記第2シートを挟み込んで、前記弾性部材と、前記第1シート及び前記第2シートの少なくとも一方と、を接合することで、前記伸縮シート連続体に固定部を形成する第1形成工程と、
前記第1接合部材と前記第2接合部材との間に前記弾性部材、前記第1シート及び前記第2シートを挟み込んで、前記第1シートと前記第2シートとを接合することで、前記伸縮シート連続体の、前記固定部に隣接する位置に、制限部を形成する第2形成工程と、
を含み、
前記切断工程では、前記伸縮シート連続体の前記制限部において、前記伸縮シート連続体の前記弾性部材が切断され、
前記制限部では、前記第1シート及び前記第2シートと、前記弾性部材と、は非接合であって、かつ、前記切断工程で切断された前記弾性部材の収縮移動が前記第1シート及び前記第2シートにより制限される、
伸縮シートの製造方法。 - 連続する第1シートと、連続する第2シートと、前記第1シートと前記第2シートとの間に配置される連続する弾性部材と、を一体化して伸縮シート連続体を形成する形成工程を備えた、伸縮シートの製造方法であって、
前記形成工程には、
前記第1シートと前記第2シートとの間に前記弾性部材が配置されている状態で、前記第1シート、前記第2シート及び前記弾性部材を搬送方向に搬送する搬送工程と、
前記搬送方向に搬送される、前記第1シート、前記弾性部材、及び前記第2シートを支持する第1接合部材と、上流側第2接合部材と、の間に前記弾性部材、前記第1シート及び前記第2シートを挟み込んで、前記弾性部材と前記第1シート及び前記第2シートの少なくとも一方とが仮接合された仮接合部分を形成する第1形成工程と、
前記第1接合部材と、前記上流側第2接合部材よりも前記搬送方向における下流側に配置される下流側第2接合部材と、の間に、前記仮接合部分を挟み込んで、前記弾性部材と前記第1シート及び前記第2シートの少なくとも一方とを本接合して、前記伸縮シート連続体を形成する第2形成工程と、
を含む、
伸縮シートの製造方法。 - 伸縮シートを備えた着用物品であって、
前記伸縮シートは、第1シート片と、第2シート片と、第1方向に延び、前記第1シート片と前記第2シート片との間に配置される弾性部材と、を少なくとも含み、
前記伸縮シートは、前記第1方向において、
前記弾性部材が存在しない第1部分と、
前記弾性部材が前記第1シート片及び前記第2シート片の少なくとも一方と接合されている第2部分と、
を含み、
前記第1部分には、前記第1方向と直交する方向に切断した断面視において、前記第2部分の前記弾性部材が配置される空間と連通する前記第1シート片及び前記第2シート片の間の空間の最大隙間が、張力が作用していない状態における前記弾性部材の直径よりも小さい部分が存在する、
着用物品。 - 前記伸縮シートは、前記第1方向において、前記第1部分と前記第2部分との間に配置される第3部分を更に含み、
前記第3部分には、前記第1方向と直交する方向に切断した断面視において、前記第2部分の前記弾性部材が配置される前記空間と連通する前記第1シート片及び前記第2シート片の間の空間の最大隙間が、張力が作用していない状態における前記弾性部材の直径よりも小さい部分が存在する、
請求項9に記載の着用物品。
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| EP3746021B1 (en) * | 2018-01-29 | 2024-01-31 | Curt G. Joa, Inc. | Apparatus and method of manufacturing an elastic composite structure for an absorbent sanitary product |
| JP7353739B2 (ja) * | 2018-10-04 | 2023-10-02 | ユニ・チャーム株式会社 | 伸縮性シートの製造方法、伸縮性シートの製造装置、及び、伸縮性シート |
| US11925538B2 (en) * | 2019-01-07 | 2024-03-12 | Curt G. Joa, Inc. | Apparatus and method of manufacturing an elastic composite structure for an absorbent sanitary product |
-
2023
- 2023-06-07 WO PCT/JP2023/021082 patent/WO2023243498A1/ja not_active Ceased
- 2023-06-07 CN CN202380046544.9A patent/CN119768138A/zh active Pending
- 2023-06-07 EP EP23823790.3A patent/EP4529908A4/en active Pending
- 2023-06-07 JP JP2024528751A patent/JP7748562B2/ja active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018070150A1 (ja) * | 2016-10-11 | 2018-04-19 | 株式会社瑞光 | 伸縮シート、それを用いた着用物品および伸縮シートの製造装置 |
| WO2018122970A1 (ja) * | 2016-12-27 | 2018-07-05 | ユニ・チャーム株式会社 | 吸収性物品に係るシート状部材の製造方法、及び製造装置 |
| WO2020235495A1 (ja) * | 2019-05-22 | 2020-11-26 | 株式会社瑞光 | 複合伸縮部材およびそれを用いた着用物品 |
| JP6903810B1 (ja) | 2020-12-01 | 2021-07-14 | 株式会社瑞光 | 着用物品の製造方法 |
| WO2022118691A1 (ja) * | 2020-12-01 | 2022-06-09 | 株式会社瑞光 | 着用物品の製造方法 |
Non-Patent Citations (1)
| Title |
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| See also references of EP4529908A4 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN119768138A (zh) | 2025-04-04 |
| EP4529908A1 (en) | 2025-04-02 |
| EP4529908A4 (en) | 2025-11-26 |
| JPWO2023243498A1 (ja) | 2023-12-21 |
| JP7748562B2 (ja) | 2025-10-02 |
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