JP2008183033A - Tape type diaper - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a tape diaper capable of preventing the leak of urine from a waist opening part and excellent in the fitness to the periphery of the waist. <P>SOLUTION: The tape diaper 1 is constituted of the respective parts of the front body 2, a crotch part 4 and the back body 6 and has an absorber 22, a top sheet 18, a back sheet 20, fastening tape 10, and a waist peripheral stretchable material 42. The material 42 is arranged on the back side of the absorber 22 in the back body 6 so that the end edge 42a on the side of the back body 6 of the waist peripheral stretchable material 42 and the end edge 22a on the side of the back body 6 of the absorber 22 is set at the same position or the end edge 42a on the side of the back body 6 of the waist peripheral stretchable material 42 is set on the side of the crotch part 4 on the end edge 22a on the side of the back body 6 of the absorber 22 and at least a part in the width direction X of the waist peripheral stretchable material 42 is overlapped with the absorber 22. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a tape-type diaper. More specifically, the present invention relates to a tape-type diaper that can effectively prevent urine leakage from the waist opening and has excellent fit around the waist.

  In general, a tape-type diaper is arranged so as to cover the absorbent body 22 and the upper surface of the absorbent body 22, for example, like a tape-type diaper 100 shown in FIG. 5, and at least a top made of a liquid-permeable material. The sheet 18 is disposed so as to cover the lower surface of the absorber 22 and includes a back sheet 20 made of a liquid-impermeable material, and includes a front body 2, a crotch 4, and a back body 6. The disposable diaper is further provided with a fastening tape 10 that is arranged so as to extend from the left and right side edges 6a, 6b of the back body 6, and that fixes the front body 2 and the back body 6.

  According to such a tape-type diaper 100, the excrement of the wearer passes through the liquid-permeable portion of the top sheet 18 (the center sheet 18a in the figure) and is absorbed by the absorber 22, and usually the liquid Leakage to the outside is prevented by the back sheet 20 made of an impermeable material, and excrement can be held inside the diaper. Further, by fixing the front body 2 and the back body 6 of the diaper to each other with the fastening tape 10, there is also an advantage that the wearer can easily put on the diaper. In this tape-type diaper 100, the three-dimensional gather 26 (26a, 26b) is formed by folding the side sheet 18b, and two leg-around elastic members 40 are arranged along the longitudinal direction of the diaper. .

  However, the tape-type diaper has a tendency that it is difficult to obtain the fit around the waist and the legs, compared with the pants-type diaper, and there is a problem of improving the fit around the waist and the legs. For this reason, in order to form a gather that is rich in elasticity (waist gather) in the waist opening, for example, as shown in FIG. 5, an elastic stretchable member (around the waist) arranged along the waist opening. A tape-type diaper 100 provided with an elastic material 42) is disclosed (for example, see Patent Document 1).

  In addition, a tape-type diaper in which a waist rubber is disposed around the waist in order to improve the flexibility around the waist of the wearer is also disclosed (for example, see Patent Document 2).

JP 2003-180750 A (paragraph 0012, FIG. 1) JP-T-2004-515316 (paragraph 0030, FIG. 1)

  However, for example, a tape-type diaper as shown in Patent Document 1 is such that an elastic elastic member (elastic material around the waist) is arranged on the end side of the back body in the longitudinal direction from the position where the absorber is arranged. Although the gap around the waist could be made difficult, there was a problem that the fit around the waist from the waist opening to the buttock was poor. Specifically, such a tape-type diaper is designed to prevent the diaper from slipping off due to the stretchability of the waist gathers formed in the opening around the waist. For example, in the case of an infant or the like in which the wearer can actively move around, there is a problem that the diaper easily slides down.

  Moreover, since the waist rubber is arrange | positioned in the comparatively wide range, the tape-type diaper as shown to patent document 2 can improve the fit around a waist to some extent, but it is located in the back body side. There is a problem that excrement (for example, urine) easily leaks along the back side because the absorbent body to be carried out is small.

  As a result of intensive studies to solve the problems of the prior art as described above, the inventor has arranged a waist elastic material made of an elastic material on the back side of the absorbent body on the back body side. Place the edge on the back body side of the surrounding elastic material at the same position as the edge on the back body side of the absorber, or on the crotch side than the edge on the back body side of the absorber. The inventors have conceived that the above problem can be solved by making at least a part of the elastic material in the width direction of the diaper overlap the absorbent body, thus completing the present invention. Specifically, the following tape type diaper is provided by the present invention.

[1] The front body, the crotch part, and the back body, each of which is composed of an absorbent body, a top sheet that is arranged so as to cover the surface of the absorbent body, and at least part of which is made of a liquid-permeable material, and the absorbent body A back sheet made of a liquid-impermeable material and arranged to extend from the left and right side edges of the back body, fixing the front body and the back body. A tape-type diaper comprising a fastening tape and a waist elastic material made of an elastic material, wherein the waist elastic material is disposed on the back side of the absorber in the back body. The edge on the back body side of the surrounding elastic material and the edge on the back body side of the absorber are in the same position, or the edge on the back body side of the elastic material around the waist is the absorption Crotch than the edge of the back body side of the body Are arranged so as to be part side, the tape-type diaper at least partially in the width direction of the diaper of the waist elastic member overlaps the absorbent body.

[2] The tape-type diaper according to [1], wherein the fastening tape is arranged in a region on an extension in a width direction of the diaper from an arrangement position of the elastic material around the waist.

[3] The tape-type diaper according to [1] or [2], wherein the waist elastic material is made of urethane foam.

[4] The waist stretchable material is configured such that the width is longer than the width of the absorbent body, and both side edges of the waist stretchable material protrude from both side edges of the absorbent body. The tape-type diaper according to any one of the above [1] to [3], which is arranged in the above.

[5] An abdominal circumference stretchable material made of a stretchable material is further provided, and the abdominal circumference stretchable material is formed on the back side of the absorbent body in the front body, on the front body side edge of the abdominal circumference stretchable material, and The front body side edge of the absorbent body is in the same position as the front body side edge of the absorbent body, or the front body side edge of the abdominal circumference stretchable material is more crotch than the front body side edge of the absorbent body The tape-type diaper according to any one of [1] to [4], wherein the tape-type diaper is arranged so as to be on a portion side, and at least a part of the belly stretchable material in the width direction of the diaper overlaps the absorber.

  The tape-type diaper of the present invention can effectively prevent leakage of urine from the waist opening and is excellent in fit around the waist from the waist opening to the buttocks. That is, since the waist elastic material is arranged at the above-described position, the gathers formed by the waist elastic material (waist gather) are formed in the region where the absorber of the back body is arranged. The fit around the waist in the region where the absorber is arranged is excellent. For this reason, for example, even in the case of an infant or the like in which the wearer can actively move around, the diaper is difficult to slide down.

  In addition, as described above, since the absorber on the back body side is in close contact with the wearer, the wearer's buttocks can be securely wrapped, and urine leakage from the waist opening through the buttocks can be effectively prevented. Can do.

  Hereinafter, the best mode for carrying out the tape-type diaper of the present invention will be specifically described by taking a one-piece type tape-type diaper as an example. However, the present invention broadly encompasses tape-type diapers having the invention-specific matters, and is not limited to the following embodiments.

  In the present specification, “tape-type diaper” means, as in the tape-type diaper 1 shown in FIG. 1, the absorbent body 22, the top sheet 18 at least partly made of a liquid-permeable material, and liquid-impermeable. A back sheet 20 made of material, and composed of a front body 2, a crotch 4 and a back body 6, and arranged so as to extend from the left and right side edges 6 a and 6 b of the back body 6. A disposable diaper further comprising a fastening tape 10 for fixing the back body 6 to the front body 2 is meant.

  The “one-piece type” is different from the two-piece type described later in that it includes a top sheet, a back sheet, and an absorbent body. However, the absorbent body that absorbs and retains the gap between the top sheet and the back sheet. It means a type of diaper that is integrated (built-in) and configured integrally with a top sheet and / or a back sheet that has a mounting function.

  In addition, in this specification, “front body” means a part that covers the abdomen (front of the body) of the wearer when a diaper is worn on the wearer, and “inseam” means that the wearer wears a diaper. When the wearer wears a diaper, the part covering the inseam of the wearer means the part covering the back side (back of the body) of the wearer.

[1] Configuration of the tape-type diaper of the present invention:
The tape-type diaper of the present invention is composed of the front body 2, the crotch 4 and the back body 6 as in the tape-type diaper 1 shown in FIG. 1, for example, and includes an absorber 22, a top sheet 18, and a back. A seat 20, a fastening tape 10 for fixing the front body 2 and the back body 6, arranged so as to extend from the left and right side edges 6 a and 6 b of the back body 6, and a waist made of an elastic material The waist-type elastic material 42 is provided on the back side of the absorbent body 22 in the back body 6 on the back side 6 side edge 42a of the waist-type elastic material 42. And the edge 22a on the back body 6 side of the absorber 22 or the edge 42a on the back body 6 side of the waist elastic member 42 is the edge on the back body 6 side of the absorber 22 It is arranged so that it is closer to the crotch 4 than 22a. At least a part of its thickness direction in the absorber 22 in the width direction X of the diaper bets surrounding stretchable members 42, i.e., a tape-type diaper 1 that overlaps in the thickness direction of the diaper. The tape-type diaper 1 shown in FIG. 1 is arranged so that the end edge 42a on the back body 6 side of the waist elastic member 42 and the end edge 22a on the back body 6 side of the absorber 22 are in the same position. An example is shown.

  Here, FIG. 1 is a partially cutaway plan view showing one embodiment of the tape-type diaper of the present invention, and shows a state where the tape-type diaper is developed and viewed from the top sheet side. The tape-type diaper 1 shown in FIG. 1 further includes a front patch 12 for fastening the above-described fastening tape 10 in the front body 2 portion of the diaper.

  In the conventional tape-type diaper, as shown in FIG. 5, the waist elastic member 42 does not overlap with the place where the absorber 22 is disposed, that is, the absorber 22 and the waist elastic member 42 do not overlap. So that each was arranged. Although such a conventional tape-type diaper can make it difficult to create a gap around the waist, there is a problem that the fit around the waist from the waist opening to the buttock is poor.

  Since the gathers (waist gathers) formed by the waist elastic material are formed in the region where the back body absorbent body is disposed, the tape-type diaper of the present invention has excellent fit around the waist. For this reason, for example, even in the case of an infant or the like in which the wearer can actively move around, the diaper is difficult to slide down. The absorbent body and the elastic material around the waist overlap in a part of the longitudinal direction of the diaper, and the edge on the back body side of the elastic material around the waist protrudes from the edge on the back body side of the absorber. In such a case, the force to hold down the edge on the back body side of the absorbent body is weakened, and the fit is deteriorated.

  Moreover, since the absorber in a back body side adheres to a wearer, a wearer's buttocks can be wrapped reliably and the urine leakage from the waist opening part along a buttocks can be prevented effectively.

  In addition, in the tape type diaper of the present invention, not only the case where the waist-side stretchable material and the absorbent body are arranged so that the end edges on the back body side are in the same position, for example, as shown in FIG. The end edge 42a on the back body 6 side of the waist elastic member 42 is located on the crotch side with respect to the end edge 22a on the back body 6 side of the absorber 22, that is, the end on the back body 6 side of the absorber 22 The edge 22a may be configured to protrude from the end edge 42a on the rear body 6 side of the waist elastic member 42.

  Here, FIG. 2 is a partially cutaway plan view showing another embodiment of the tape-type diaper of the present invention, and is a view showing a state in which the tape-type diaper is developed and viewed from the top sheet side. In FIG. 2, the same components as those of the tape-type diaper shown in FIG. 1 are denoted by the same reference numerals and description thereof is omitted.

  Although not particularly limited, as shown in FIG. 1, the waist stretchable material 42 used in the tape-type diaper 1 of the present invention has a width W1 of the waist stretchable material larger than the width W2 of the absorbent body. It is configured to be long, and it is preferable that both side edges of the waist elastic member 42 are arranged in a state of protruding from both side edges of the absorber 22. By comprising in this way, in the back body 6 of a diaper, the stretch force by the waist circumference elastic material 42 covers a wide range in the width direction X of the diaper, and the fit around the waist can be further improved.

  The “width” of the elastic material around the waist means the length of the elastic material around the waist in the width direction X of the diaper. Similarly, the “width” of the absorber is the same as that of the absorbent diaper. It means the length in the width direction X.

  Moreover, in the tape-type diaper 1 of this invention, it is preferable that the fastening tape 10 is arrange | positioned in the area | region (extension area | region) on the extension of the width direction X of a diaper from the arrangement position of the elastic material 42 around a waist. . That is, in the back body 6 of the tape-type diaper 1, the fastening tape 10 and the waist elastic material 42 are arranged in series, so that the stress generated when the fastening tape 10 is fastened is good for the waist elastic material 42. It is possible to further improve the fit around the waist.

  In addition, in the tape-type diaper 1 shown in FIG. 1, the length L1 of the direction orthogonal to the width direction X of the diaper around the waist elastic material 42 and the width W3 of the fastening tape are shown. However, as shown in FIG. 2, for example, when the length L2 in the direction orthogonal to the width direction X of the diaper around the waist is larger than the width W3 of the fastening tape, The wearing tape 10 should just be arrange | positioned in a part of area | region (extension area | region) on the extension of the width direction X of a diaper from the arrangement position of the elastic material 42 around a waist. On the contrary, as shown in FIG. 3, when the length L3 in the direction orthogonal to the width direction of the waist elastic member 42 is smaller than the width W3 of the fastening tape 10, the fastening tape 10 is It should just be arranged so that the area (extension field) on the extension of the width direction X of the diaper may be included from the arrangement position of the elastic material 23 around the waist. By configuring as described above, it is possible to obtain the same effects as those of the tape-type diaper 1 shown in FIG. The “width” of the fastening tape means the length in the direction perpendicular to the longitudinal direction in the fastening tape configured in a band shape.

  Here, FIG. 3 is a partially cutaway plan view showing another embodiment of the tape-type diaper of the present invention, and is a view showing a state where the tape-type diaper is developed and viewed from the top sheet side. In FIG. 3, the same components as those of the tape-type diaper shown in FIG.

[2] Components of the tape-type diaper of the present invention:
Hereinafter, the constituent members of the tape-type diaper of the present invention will be described separately.

[2-1] Absorber:
The absorber is a member for absorbing and holding the wearer's urine. The absorber is made of an absorbent material because it needs to absorb and retain the wearer's urine and body fluid.

  Examples of the absorbent material constituting the absorber include conventionally known absorbent materials usually used for disposable diapers and other absorbent articles, such as fluff pulp, super absorbent polymer (Super Absorbent Polymer; hereinafter referred to as “SAP”). And a hydrophilic sheet. It is possible to use wood pulp or non-wood pulp defibrated as fluff pulp, sodium polyacrylate as SAP, tissue, absorbent paper, hydrophilized nonwoven fabric as hydrophilic sheet preferable.

  These absorbent materials are usually used as a single-layer or multi-layer mat. Under the present circumstances, 1 type may be used independently among the said absorptive materials, and 2 or more types may be used together. Especially, what used together about 10-500 mass parts SAP with respect to 100 mass parts of fluff pulp is preferable. At this time, the SAP may be uniformly mixed in each mat of fluff pulp, or may be arranged in layers between the layers of the multilayer fluff pulp.

  It is preferable that the absorber is interposed at least in part between the top sheet and the back sheet. Usually, the absorber is interposed between the top sheet and the back sheet by being sandwiched between the top sheet and the back sheet and sealing the peripheral edge thereof. Therefore, the flap part in which the absorber is not interposed is formed between the top sheet and the back sheet at the peripheral part of the absorber. The absorber is interposed in at least a part between the top sheet and the back sheet. In the tape-type diaper of the present invention, the absorbent body and the elastic material around the waist are configured to overlap with each other on the back body of the diaper, so the absorbent body is interposed at least from the crotch part to the back body. It is preferable. In addition, the absorber may extend to the front body.

  It is preferable that the absorber is entirely wrapped with a hydrophilic sheet. Such a configuration has an advantage that SAP can be prevented from leaking from the absorber and shape stability can be imparted to the absorber.

  Although there is no restriction | limiting in particular about the shape of an absorber, The shape used in the conventional disposable diaper and other absorbent articles, for example, a rectangular shape, an hourglass type, a gourd type, a T shape etc. can be mentioned. The tape-type diaper 1 shown in FIG. 1 is an example in which an hourglass-type absorber is used as the absorber 22.

  In addition, a sheet (second sheet) for diffusing a liquid such as urine or body fluid may be incidentally disposed on the upper surface side of the absorber (for example, between the absorber and the top sheet). . When this second seat is attached, even if the space on the lower surface of the top sheet is not sufficiently formed due to the posture of the wearer, etc., the absorption rate of urine and body fluids is difficult to decrease, and the absorption rate decreases. It is possible to prevent leakage of urine and body fluids.

  Examples of the material constituting the second sheet include hydrophilic and liquid-permeable materials such as woven fabric, non-woven fabric, porous plastic, and fluff pulp. Examples of these constituent materials include polypropylene, polyethylene, polyester, rayon, pulp, and composite fibers thereof. As the pulp, crimped fibers such as curly cellulose fibers can be suitably used.

[2-2] Top sheet:
A top sheet is a sheet | seat arrange | positioned so that the surface (surface located in a wearer's skin side at the time of mounting | wearing of a diaper) may be coat | covered. At least a part (all or a part) of the top sheet is made of a liquid-permeable material because the absorber disposed on the lower surface side needs to absorb the wearer's urine. Usually, at least near the surface of the absorber, it is made of a liquid-permeable material that can permeate the wearer's urine and body fluid. As long as at least a part is made of the liquid permeable material, the entire top sheet is not necessarily made of the liquid permeable material.

  Examples of the liquid permeable material constituting the top sheet include a woven fabric, a nonwoven fabric, and a porous film. Among these, it is preferable to use a non-woven fabric made of a thermoplastic resin such as polypropylene, polyethylene, polyester, or nylon and subjected to a hydrophilic treatment. There is no restriction | limiting in particular also about the kind of nonwoven fabric, The conventionally well-known nonwoven fabric manufactured by various manufacturing methods, such as air through (card hot air), card | curd embossing, and a spun bond, can be used suitably.

  The top sheet may be composed of a single sheet material, but may be composed of a plurality of sheet materials. For example, the form which comprises the top sheet arrange | positioned at the surface part of an absorber and the top sheet arrange | positioned in the part of a side flap by a different sheet | seat is also utilized frequently. The tape-type diaper 1 shown in FIG. 1 has a top sheet 18 (center sheet 18a) made of a liquid-permeable material at the center of the diaper, and the side flap 8 part of the diaper is resistant to liquid permeation. It is the example which has arrange | positioned the top sheet 18 (side sheet 18b) which consists of ventilation water-repellent material which shows.

[2-3] Backsheet:
A backsheet is a sheet | seat arrange | positioned so that the back surface (surface located in a wearer's clothing side at the time of mounting | wearing of a diaper) may be coat | covered. The back sheet is made of a liquid-impermeable material because it is necessary to prevent the wearer's urine from leaking outside the diaper. Although there is no restriction | limiting in particular about the arrangement | positioning method, For example, the structure which arrange | positions the back seat | sheet 20 so that it may correspond with the external shape of a diaper like the tape-type diaper 1 shown in FIG. However, it is not always necessary to adopt such a configuration. From the viewpoint of preventing leakage of urine absorbed by the absorber, a back sheet made of a liquid-impermeable material is disposed at least in a portion where the absorber is present. May be.

  Examples of the liquid-impermeable material constituting the back sheet include a liquid-impermeable film made of a resin such as polyethylene. Among these, a microporous polyethylene film is preferably used. This microporous polyethylene film has a large number of fine pores of 0.1 to several μm and is liquid impervious but has moisture permeability. There is.

  Note that a sheet material (cover sheet) may be bonded to the outer surface of the back sheet. This cover sheet is used to reinforce the back sheet and improve the feel (tactile feeling) of the back sheet.

  Examples of the material constituting the cover sheet include woven fabric and non-woven fabric. Especially, it is preferable to use the dry nonwoven fabric and wet nonwoven fabric which consist of thermoplastic resins, such as polyethylene, a polypropylene, and polyester.

[2-4] Elastic material around waist:
The waist elastic material used in the tape-type diaper of the present invention is located on the back side of the absorbent body in the back body, and the edge on the back body side of the waist elastic material and the edge on the back body side of the absorber are in the same position. It is arranged so that the edge of the back body side of the elastic material around the waist is on the crotch side rather than the edge of the back body side of the absorber, and in the width direction of the elastic material around the waist At least a portion overlaps the absorber.

  By arranging such an elastic material around the waist, a gather (waist gather) rich in elasticity can be formed around the waist in the region where the absorber in the back body is arranged. This waist gather makes it difficult for gaps to be formed around the waist, preventing leakage of urine from the waist opening, improving the fit of the diaper to the wearer, and preventing the diaper from slipping down. The

  Regarding the elastic material around the waist, after considering the degree of contraction of the waist gather, the constituent material, the elongation rate of the material, the stretched state at the time of fixing, etc. may be determined.

  As a specific elastic material, an elastic material that has been used in conventional disposable diapers can be suitably used. For example, in addition to elastic foam such as urethane foam, elastic net, natural rubber and synthetic rubber (urethane Examples thereof include thread rubber and flat rubber made of an elastic material such as rubber. In addition, in the tape type diaper of this invention, the waist surrounding elastic material comprised from the urethane foam can be used suitably. Since such a waist elastic material can be disposed in a relatively wide range from the waist opening to the heel, the fit around the waist can be improved satisfactorily.

  It is preferable to fix the stretchable material around the waist in an extended state in order to exert a sufficient stretch force. For example, when the elastic material around the waist is urethane foam, it is preferably fixed in a stretched state of 110 to 400%, and more preferably fixed in a stretched state of 130 to 200%. By fixing in the extended state in such a range, a sufficient stretching force can be applied.

  Such waist elastic members are fixed to other components of the diaper by an adhesive or other means. The fixing method may be, for example, adhesion using a hot melt adhesive or other highly fluid adhesive, or may be welding by heat such as heat sealing or ultrasonic waves.

[2-5] Fastening tape:
A fastening tape is a tape-like member provided with a fastener for attaching a diaper to a wearer. The fastening tape is disposed so as to extend from the left and right side edges of the back body of the diaper, and is configured so that the back body of the diaper can be fixed to the front body. Such a diaper can be made into a pants-type whole diaper by fixing the back of the diaper to the front with a fastening tape, allowing the wearer to wear the diaper. Become.

  The form of the fastening tape is not particularly limited as long as it can be fixed to a front patch described later. For example, it may be a tape provided with an adhesive tape fastener that is fixed by an adhesive, or may be a tape provided with a mechanical fastener (surface fastener) that is fixed by mechanical coupling. However, it is preferable to use a tape provided with a mechanical fastener that does not reduce the fixing strength even when used repeatedly. For example, a fastening tape composed of a cloth base material and a hook material of a mechanical fastener attached to the surface of the base material can be suitably used.

  The material constituting the base material of the fastening tape can be paper, plastic film or the like in addition to cloth, but it is preferable to use a cloth that is gentle to the wearer's skin and has high strength.

Specific examples of “cloth” include woven cloth, non-woven cloth, felt, and the like. Among these, a spunbonded nonwoven fabric is preferable because it is composed of long fibers and has high strength and can be manufactured at low cost. The spunbonded nonwoven fabric, it is preferable to use a material that basis weight of 40 to 120 g / ^{m 2,} it is more preferable to use those 50 to 100 g / ^{m 2.} By using a material having such a weight per unit area, the strength of the fastening tape can be improved, and an appropriate stiffness can be imparted. On the other hand, if a material having a basis weight of less than 40 g / m ² is used, the strength of the fastening tape becomes insufficient, and there is a possibility that the fastening tape may be broken when it is pulled strongly. Moreover, since the fastening tape will become too hard when the fabric weight exceeds 120 g / m ² , depending on the posture of the wearer, it may hit the wearer's skin and cause pain. Usually, in the case of a diaper for adults, a spunbond nonwoven fabric having a basis weight of about 70 g / m ² is used. In the case of a diaper for infants, a spunbond nonwoven fabric having a basis weight of about 80 to 100 g / m ² is used.

  Moreover, as a material which comprises cloth, a synthetic resin, for example, a polyethylene type, a polypropylene type, a polyamide type, a polyester type, a polyvinyl chloride type, a polystyrene type synthetic resin, etc. can be used conveniently.

  As a means for fixing the fastening tape and the front patch, a mechanical fastener (also referred to as a planar fastener) that is fixed by mechanical coupling of a convex member (hook member) and a concave member (loop member) is preferably used. be able to. The mechanical fastener is, for example, a convex member (hook material) having a large number of protrusions (hook shape, mushroom shape, hook shape, etc.) formed on the surface, and a concave material (loop material) having loop-shaped fibers arranged on the surface. Often used in combination. In this fastener, the hook material is superimposed on the surface of the loop material, and a large number of protrusions of the hook material are engaged with the surface of the loop material, so that both members can be peeled and firmly fixed. It can be done.

  For example, the tape-type diaper 1 shown in FIG. 1 is an example in which the fastening tape 10 is attached so as to extend from the left and right side edges 6a, 6b of the back body 6 (more specifically, the side flap 8) of the diaper. It is. In this example, as a fastener 44, a hook material 44 a of a mechanical fastener is attached to the surface of a nonwoven fabric that becomes a base material 48.

[2-6] Front patch:
A front patch means the area | region for fixing the fastening tape formed or attached to the front body part of a diaper. When an adhesive fastener is used as the fastener, a plastic film having a smooth surface is used as the front patch. On the other hand, when a mechanical fastener is used as a fastener, especially when a hook material of a mechanical fastener is attached to a fastening tape, a loop material of the mechanical fastener is used as a front patch.

  For example, in the tape-type diaper 1 shown in FIG. 1, a rectangular front patch 12 made of a loop material 44b of a mechanical fastener is disposed on the front body 2 of the diaper, and is attached to the base material 48 of the fastening tape 10. The hook member 44a thus formed can be fixed. With such a configuration, the back body 6 of the diaper can be fixed to the front body 2, and the diaper can be worn by the wearer.

[2-7] Solid gather:
The tape-type diaper of the present invention may include a three-dimensional gather in order to prevent side leakage of urine excreted by the wearer. The three-dimensional gather is a member for preventing side leakage of the urine excreted by the wearer, and is a leak-proof wall configured to stand up three-dimensionally. By forming such a three-dimensional gather, the three-dimensional gather serves as a breakwater, and leakage from a leg-diameter opening or the like (so-called “lateral leakage”) can be effectively prevented.

  The structure of a three-dimensional gather can employ | adopt the structure used for the conventional disposable diaper and other absorbent articles. For example, a stretchable material (a three-dimensional gathered stretchable material) disposed on a part of the water-repellent sheet material and a sheet (gather) formed on the sheet material by the three-dimensional gathered stretchable material can be suitably used.

  The three-dimensional gather may be formed of a sheet material that is completely different from the top sheet and the back sheet, but may be formed by folding back a top sheet such as a center sheet or a side sheet. For example, the tape-type diaper 1 shown in FIG. 1 is an example in which the three-dimensional gather 26 (26a, 26b) is formed by folding back the side sheet 18b. However, the three-dimensional gather may be formed by folding back a member other than the top sheet such as a second sheet. The three-dimensional gathers 26a and 26b of the tape-type diaper 1 shown in FIG. 1 are arranged so that the end corresponding to the upper edge of the tape-shaped diaper 1 is folded and the three-dimensional gather stretchable material 36 (36a, 36b) is sandwiched between the folded portions. It is.

  In order to prevent leakage from the crotch part, this three-dimensional gather may be formed at least in the crotch part, but may be formed in the front body or the back body. For example, the tape-type diaper 1 shown in FIG. 1 has a pair of three-dimensional gathers 26 (26a, 26b) formed continuously from the crotch part 4 to both the front body 2 and the back body 6 along the longitudinal direction of the diaper. An example is shown. Further, at least one pair of solid gathers must be formed, but two or more pairs may be formed.

  The three-dimensional gather may be an inward gather that tilts toward the inside of the diaper, or may be an outward gather that tilts toward the outside of the diaper. Moreover, it can also be set as the three-dimensional gathers (C fold gather, Z fold gather, etc.) which formed the bending part and the folding | turning part in a part of height direction. For example, the tape-type diaper 1 shown in FIG. 1 is an example in which the three-dimensional gather 26 (26a, 26b) is inwardly gathered.

[2-8] Abdominal stretch material:
The tape-type diaper of the present invention may further include an abdominal circumference elastic material made of an elastic material on the front body side of the diaper, in addition to the waist elastic material explained so far.

  An abdominal circumference elastic material is an elastic material arrange | positioned along a wearer's abdominal circumference, ie, the waist circumference of the front body side of a diaper. By arranging such an abdominal waist stretchable material, a gather that is highly stretchable around the waist on the front body side (hereinafter sometimes referred to as “front waist waist gather”) can be formed. By comprising in this way, the waist gathers by the waist surrounding elastic material mentioned above are formed in the back body side of a diaper, and the front body waist gathers are formed by the waist elastic body in the front body side. In such tape-type diapers, gathers with elasticity are placed on both sides of the wearer's back side and abdomen side, making it difficult for gaps to be formed around the waist, effectively urine leakage from around the waist Can be prevented. In addition, the fit of the diaper to the wearer is further improved, and diaper slippage is effectively prevented.

  Although not particularly limited, when the tape-type diaper of the present invention further includes an abdomen stretchable material, as shown in FIG. The front edge 2 side edge 43b of the abdominal circumference stretchable material 43 and the front body 2 side edge 22b of the absorbent body 22 are located at the same position on the back side of the absorbent body 22 or the abdominal circumference stretchable material. 43 is arranged such that the edge 43b on the front body 2 side of the body 43 is closer to the crotch 4 side than the edge 22b on the front body 2 side of the absorbent body 22, and at least in the width direction X of the diaper of the waist elastic member 43 It is preferable that a part of the absorbent body 22 overlaps the thickness direction thereof, that is, the diaper thickness direction. By comprising in this way, since the absorber of the front body side closely_contact | adheres to a wearer, absorption of the urine which the wearer excreted can be performed more reliably, and the side leakage of urine can be prevented effectively. Moreover, the fitting property of the diaper to a wearer also becomes favorable.

  Here, FIG. 4 is a partially cutaway plan view showing still another embodiment of the tape-type diaper of the present invention, and is a view showing a state where the tape-type diaper is developed and viewed from the top sheet side. In FIG. 4, the same components as those of the tape-type diaper shown in FIG. In FIG. 4, an example is shown in which the edge 43 b on the front body 2 side of the elastic material 43 around the abdomen and the edge 22 b on the front body 2 side of the absorber 22 are arranged at the same position. .

  As such an abdominal stretchable material, a material configured in the same manner as the waist stretchable material described so far can be suitably used except that the place to be arranged is the front body side. For example, in consideration of the degree of shrinkage of the front body waist gather, the constituent material, its size, the elongation rate of the material, the stretched state at the time of fixation, etc. may be determined.

[2-9] Leg elastics:
In the tape-type diaper of the present invention, a leg-surrounding elastic material may be further arranged along the leg-surrounding opening. By arranging the leg-stretchable material, a gather (leg gather) rich in stretchability can be formed in the leg-surrounding opening. Therefore, it is difficult to form a gap around the leg, and urine leakage from the opening around the leg can be effectively prevented. Further, when the leg stretchable material is disposed, the leg stretchable material contracts on both sides of the absorbent body when changing the diaper, so that the vicinity of the crotch portion is deformed into a bowl shape and a recess is formed. For this reason, urine and body fluid accumulate in the concave portion, and the diaper can be easily replaced without spilling urine and body fluid.

  For example, the tape-type diaper 1 shown in FIG. 1 is an example in which leg gathers are formed by arranging two leg-around elastic members 40 linearly along the longitudinal direction of the diaper. The leg-around elastic member 40 is made of rubber thread. However, the leg-surrounding elastic members are not necessarily arranged linearly, and may be arranged in a curved line along the curve of the leg-periphery opening, for example.

  The leg stretchable material is preferably formed with a leg stretchable material 40 in a portion outside the upright line 46 of the three-dimensional gather 26, for example, like the tape-type diaper 1 shown in FIG. With such a configuration, it is possible to improve the wearing feeling and wearing feeling of the crotch part while ensuring a sufficient leakage preventing effect of the three-dimensional gather.

  The tape-type diaper 1 shown in FIG. 1 shows an example in which the shape, arrangement position, number of arrangements, etc. of the leg elastic members 40 are bilaterally symmetric. However, these are also included in the scope of the present invention. It is. And in the tape-type diaper 1 shown in FIG. 1, although the example in which the leg periphery elastic material 40 was arrange | positioned two per one side was shown, only one may be arrange | positioned and three or more may be arrange | positioned. Good. Further, when using a plurality of leg-surrounding stretchable materials, the thickness, stretch rate, etc. may be set as appropriate according to the purpose, and it is not necessary to use the same for all.

  With regard to such a leg-stretchable material, the constituent material, the elongation rate of the material, the stretched state at the time of fixing, etc. may be determined in consideration of the degree of contraction of the leg gathers. Moreover, about the fixing method of the leg periphery elastic material, it can fix by the method similar to the waist periphery elastic material demonstrated so far.

  As the elastic material around the legs, elastic materials that have been used in conventional disposable diapers can be suitably used. Specific examples include elastic rubber, elastic film, elastic foam (urethane foam, etc.), etc., as well as thread rubber and flat rubber made of elastic materials such as natural rubber and synthetic rubber (urethane rubber, etc.). .

  This leg stretchable material is preferably fixed in an expanded state in order to exert a sufficient stretch force. For example, when the elastic material is natural rubber or synthetic rubber, it is preferably fixed in a stretched state of 100 to 400%, and more preferably fixed in a stretched state of 200 to 300%. By fixing in the extended state in such a range, a sufficient stretching force can be applied.

[3] Tape diaper manufacturing method:
Hereinafter, the manufacturing method of the tape type diaper of this invention is demonstrated in the example in the case of manufacturing the tape type diaper 1 shown in FIG. First, the elastic material 42 around the waist is placed on the upper surface of a long sheet material (back sheet material) that is the material of the back sheet 20. Next, the absorbent body 22 wrapped in the hydrophilic sheet is placed so as to cover at least a part of the waist stretchable material 42 in the width direction X of the diaper. At this time, the edge on the back body side of the elastic material around the waist and the edge on the back body side of the absorber are located at the same position, or the edge on the back body side of the elastic material around the waist is located behind the absorber. It arrange | positions so that it may become a crotch side rather than the edge of the body side.

  Moreover, the leg periphery elastic material 40 is mounted along the site | part corresponded to the leg periphery opening part of the upper surface of a sheet | seat material (back sheet material). In addition, when manufacturing the tape-type diaper 1 further provided with an abdominal circumference stretchable material 43 as shown in FIG. 4, before placing the absorbent body 22, at the stage where the waist stretchable material 42 is placed, The elastic material 40 around the legs is placed on the upper surface of the sheet material (back sheet material).

  As described above, in a state where various elastic materials (the waist elastic material 42, the leg elastic material 40, the belly elastic material 43) and the absorber 22 are placed, the length that becomes the material of the top sheet 18 on the upper surface thereof. A sheet material (top sheet material) with a scale is placed to obtain a laminate (diaper continuum) that is an intermediate body of the diaper. At this time, as the top sheet material, two types of a top sheet material corresponding to the center sheet 18a and a top sheet material corresponding to the side sheet 18b are used. A three-dimensional gather 26 is formed by providing a folded portion on the sheet material corresponding to the side sheet 18b.

  In the diaper continuous body obtained as described above, a portion corresponding to the opening around the leg of the diaper is cut out in an arc shape and cut (R cut) to form an opening around the leg. Finally, the fastening tape 10 is attached to the left and right side edges 6a and 6b of the back body 6, and the front patch 12 made of the loop material 44b is attached to the front body 2 of the diaper. The tape-type diaper 1 can be manufactured by cutting the diaper continuous body thus obtained into individual diapers. In addition, when attaching the fastening tape 10, it is preferable to attach to the area | region (extension area | region) on the extension of the width direction of the elastic material 42 around a waist.

  In addition to the above-described method, a fastening tape is previously attached to the top sheet material, and various elastic materials (waist around elastic material 42, leg circumference) are formed on the upper surface of the back sheet material in the same order as described above. The diaper continuous body may be obtained by placing the stretchable material 40, the belly circumference stretchable material 43) and the absorber 22, and further placing a top sheet material provided with a fastening tape on the upper surface thereof. The series of steps as described above can be continuously performed by mechanical means. For example, by adopting a method / apparatus such as continuously feeding a long sheet material from a roller, continuous production of a tape-type diaper becomes possible, which contributes to improvement of productivity.

[4] Applicable objects of the tape-type diaper of the present invention:
The application object of the tape-type diaper of the present invention is not limited to the one-piece type tape-type diaper, and can be applied to, for example, a two-piece type tape-type diaper. That is, even in a two-piece type tape-type diaper, the elastic material around the waist is arranged on the back side of the absorber in the back body, and the edge on the back body side of the waist elastic material and the edge on the back body side of the absorber Diapers that are stretchable around the waist, so that the edge of the back body side of the elastic material around the waist is closer to the crotch side than the edge of the back body side of the absorber By configuring so that at least a part in the width direction overlaps the absorber, the effect of the tape-type diaper of the present invention can be enjoyed.

  “Two-piece type” means an absorbent main body that functions to absorb and retain the excrement of the wearer (absorption / holding function) and an exterior member that functions to encapsulate the wearer's body (mounting function) And a diaper of the type in which an absorbent main body is disposed inside the exterior member.

  The absorbent main body is a member including an absorbent body, a top sheet, and a back sheet as constituent elements, and is manufactured by sandwiching the absorbent body between the top sheet and the back sheet and sealing the peripheral edge of the absorbent body. Can do. An absorptive main body is comprised by the size which covers at least the crotch part of a diaper. However, in order to ensure the effect of preventing leakage, it is preferable to have a size that covers not only the crotch part but also a part of the front body and the back body. The absorptive main body can be fixed to the exterior member using, for example, a hot melt adhesive or the like.

  On the other hand, the exterior member is a member having a mounting function for encapsulating the wearer's body, and specifically, is a sheet-like member that forms the front body, the crotch part, and the back body. In the two-piece type tape-type diaper, the absorbent main body fulfills the absorption / holding function to absorb and hold the excrement of the wearer, so a liquid-impermeable material is used as a material constituting the exterior member. There is no need to use. Examples of the material constituting the exterior member include a nonwoven fabric composed of synthetic fibers made of polyethylene, polypropylene, polyester, and other thermoplastic resins.

  In such a two-piece type tape-type diaper, the elastic material around the waist is generally disposed on the exterior member, and the waist elastic material is thus absorbed inside the exterior member. The sex body is arranged. For this reason, in a two-piece type tape-type diaper, the waist elastic material is on the back side of the absorbent main body, and the edge of the back body side of the waist elastic material is behind the absorbent body constituting the absorbent main body. It arrange | positions so that it may be located in the same position as the edge of the body side, or the crotch part side.

  The tape-type diaper of the present invention can be suitably used as a diaper for infants or adults such as elderly people and persons with disabilities who need care.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a partially cutaway plan view showing an embodiment of a tape-type diaper of the present invention, showing a state where the tape-type diaper is developed and viewed from the top sheet side. It is a partially notched top view which shows other embodiment of the tape-type diaper of this invention, and is a figure which shows the state which expand | deployed the tape-type diaper and was seen from the top sheet side. It is a partially notched top view which shows further another embodiment of the tape type diaper of this invention, and is a figure which shows the state which expand | deployed the tape type diaper and was seen from the top sheet side. It is a partially notched top view which shows further another embodiment of the tape type diaper of this invention, and is a figure which shows the state which expand | deployed the tape type diaper and was seen from the top sheet side. It is a partial notch top view of the conventional tape type diaper, and is a figure which shows the state which expand | deployed the tape type diaper and was seen from the top sheet side.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1,100: Tape-type diaper, 2: Front body, 4: Crotch part, 6: Back body, 6a, 6b: Side edge, 8: Side flap, 10: Fastening tape, 12: Front patch, 18: Top sheet , 18a: center sheet, 18b: side sheet, 20: back sheet, 22: absorber, 22a: edge (edge on the back body side of the absorber), 22b: edge (edge on the front body side of the absorber) Edge), 26, 26a, 26b: three-dimensional gather, 36, 36a, 36b: three-dimensional gather elastic material, 40: elastic material around leg, 42: elastic material around waist, 42a: edge (back body side of elastic material around waist) ), 43: Stretch material around the abdomen, 43b: Edge (edge on the front body side of the stretch material around the abdomen) 44: Fastener, 44a: Hook material, 44b: Loop material, 46: Standing wire, 48: Base material, L1, L2, L3: Waste Direction length perpendicular to the width direction of the diaper around stretchable material, X: the width direction of the diaper, W1: width of the waist elastic member, W2: width of the absorption body, W3: fastening tape width.

Claims (5)

Consists of each part of the front body, the crotch and the back body,
An absorber, a top sheet that is arranged so as to cover the surface of the absorber, and at least partly made of a liquid permeable material, and a back sheet that is arranged so as to cover the back surface of the absorber. A back sheet, a fastening tape that is arranged to extend from the left and right side edges of the back body, and that fixes the front body and the back body; A tape-type diaper with
In the waist elastic material, the back body side edge of the waist elastic material and the back body edge of the absorber are in the same position on the back side of the absorber in the back body. Or the rear body side edge of the elastic material around the waist is arranged so as to be closer to the crotch side than the edge on the back body side of the absorber, and the diaper of the elastic material around the waist A tape-type diaper in which at least a part in the width direction overlaps the absorber.   The tape-type diaper according to claim 1, wherein the fastening tape is disposed in a region on an extension in a width direction of the diaper from an arrangement position of the elastic material around the waist.   The tape-type diaper according to claim 1 or 2, wherein the waist elastic member is made of urethane foam.   The waist stretchable material is configured such that the width is longer than the width of the absorber, and both side edges of the waist stretchable material are disposed in a state of protruding from both side edges of the absorber. The tape-type diaper according to any one of claims 1 to 3. It is further equipped with an elastic material around the belly made of elastic material,
In the waist elastic material, on the back side of the absorbent body in the front body, the front body edge of the waist elastic material and the front body edge of the absorber are in the same position. Or the diaper of the abdominal circumference stretchable material is arranged such that the edge on the front body side of the elastic material around the abdomen is closer to the crotch side than the edge on the front body side of the absorber The tape-type diaper according to any one of claims 1 to 4, wherein at least a part in the width direction overlaps the absorber.

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