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WO2016189759A1 - Dispositif de pliage et procédé de pliage d'article absorbant - Google Patents

Dispositif de pliage et procédé de pliage d'article absorbant Download PDF

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Publication number
WO2016189759A1
WO2016189759A1 PCT/JP2015/078232 JP2015078232W WO2016189759A1 WO 2016189759 A1 WO2016189759 A1 WO 2016189759A1 JP 2015078232 W JP2015078232 W JP 2015078232W WO 2016189759 A1 WO2016189759 A1 WO 2016189759A1
Authority
WO
WIPO (PCT)
Prior art keywords
absorbent article
region
folding
folded
penetrating
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
Application number
PCT/JP2015/078232
Other languages
English (en)
Japanese (ja)
Inventor
智弘 藤原
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Unicharm Corp
Original Assignee
Unicharm Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Unicharm Corp filed Critical Unicharm Corp
Priority to CN201580080156.8A priority Critical patent/CN107613921B/zh
Publication of WO2016189759A1 publication Critical patent/WO2016189759A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • 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
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • 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
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • 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
    • A61F13/53—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 absorbing medium

Definitions

  • the present invention relates to a method and an apparatus for folding an absorbent article such as a disposable diaper.
  • the absorbent article is provided with an absorber for absorbing and retaining excretion fluid such as urine from the wearer, but in recent years, by further improving the absorption performance of the absorbent article, it is more comfortable. Attempts have been made to obtain an absorbent article having a feeling of use. As a means for improving the absorption performance of the absorbent article, it is conceivable that the excretory fluid is diffused over a wide range of the absorbent body and the entire absorbent body is effectively used for the absorption and retention of the excretory fluid.
  • a penetrating portion extending in the length direction and penetrating in the thickness direction is provided in the absorber, and excreted fluid is moved through the penetrating portion and diffused throughout the absorber. What is to be known is known.
  • the technical problem of the present invention is a means capable of suppressing as much as possible that the penetrating part is blocked when folding an absorbent article having a penetrating part in the absorbent body, and suppressing a decrease in the absorbent capacity of the absorbent body. It is to provide.
  • the method for folding an absorbent article of the present invention is as follows.
  • an absorbent article including an absorbent body having a length direction, a width direction, and a thickness direction, including a penetrating portion that extends in the length direction as a whole and penetrates in the thickness direction is folded in two.
  • the absorbent article is folded between the fold line extending in the width direction of the absorbent article and one end in the length direction of the absorbent article as viewed from the thickness direction.
  • a first region and a second region between the fold line and the other end in the length direction of the absorbent article, and the penetrating portion extends over the first region and the second region.
  • the folding method is configured such that the absorbent article has a length such that the first region and the second region overlap each other at the folding line.
  • the portion of the absorber that does not exist is pushed in, and the second portion of the penetrating portion that is located in the second region is opposed to the second portion of the first region and the portion that does not have the penetrating portion.
  • a method for folding an absorbent article comprising: a conveying step of conveying the folded portion of the absorbent article with a leading portion while pressing in a direction in which the region is pressed.
  • the absorbent body includes a pair of the through portions that are arranged in a non-contact state in the width direction of the absorbent body and are curved so as to be convex inward in the width direction of the absorbent body,
  • the folding method according to (1) wherein, in the folding step, the pair of through portions are folded at the folding line.
  • the pair of penetrating portions are formed to have the same width, and the central absorbing portion sandwiched between the pair of penetrating portions, both ends in the width direction of the absorber, and the pair A pair of side absorption parts sandwiched between one of the most adjacent penetration parts in the penetration part, and the width of the widest part in the side absorption part is the narrowest in the central absorption part.
  • the side absorption portion is wider than the central absorption portion, in the bending step and the compression step, the side absorption portion is easier to ensure the thickness than the central absorption portion, In the compression step, the absorbent article can be stably compressed while maintaining the balance in the width direction of the absorbent article. Moreover, also in the said conveyance process, since the said side part absorption part is thicker than the said center absorption part, the said absorbent article folded can be pressed with sufficient balance, and it becomes possible to perform conveyance stably. .
  • the width of the absorbent article is such that a pair of side regions provided at both ends in the width direction of the absorbent article are directed inward in the width direction of the absorbent article.
  • the absorbent article is stable at the folding line while maintaining the balance in the width direction of the absorbent article in the folding line.
  • it can compress stably, keeping the balance of the said width direction of the said absorbent article.
  • the side absorbent part is thicker than the central absorbent part, so that the folded absorbent article can be pressed in a well-balanced manner, and the transport can be performed stably.
  • the absorbent article has at least one liquid-permeable sheet disposed on the first surface side of the absorber, and the absorber is located in the first region in the bending step.
  • the first surface of the absorbent body and the first surface of the absorber located in the second region are bent in a state of facing each other, and in the compression step, the first portion located in the first region in the penetration portion And a portion of the liquid permeable sheet that overlaps the first portion in the second region together with the absorber that is opposed to the first portion and does not exist in the second region, and in the through portion
  • the second portion located in the second region overlaps with the first portion of the liquid-permeable sheet together with the absorber in the first region facing the second portion and having no through portion.
  • the absorbent article is folded in two by projecting a folding plate that contacts the entire width of the absorbent article in the thickness direction of the absorbent article at the position of the folding line.
  • the folding method according to any one of (1) to (5) above.
  • the folding plate abuts over the entire width of the absorbent article at the position of the folding line, in the folding step, the absorbent article can be reliably and stably folded at the folding position, and the penetration The through-portion non-existing portion to be pushed into the first portion and the second portion of the portion can be stably opposed to the first portion and the second portion.
  • a pair of rotating members arranged in the width direction of the absorbent article which are disposed outside both end edges in the width direction of the absorbent article, are rotated in synchronization with each other, and (1) to (5), wherein the pair of rotating members is simultaneously pressed against a portion corresponding to the penetrating portion of the absorbent article at the position of the folding line, thereby folding the absorbent article into two.
  • the folding method as described in any one of these. In this case, since the rotating member bends the absorbent article while coming into contact with the penetrating portion so as to push the penetrating portion in the width direction, the penetrating portion is hardly crushed at the bent portion of the absorbent article.
  • the folding device for absorbent articles according to the present invention has a length direction, a width direction, and a thickness direction, and includes a through portion extending in the length direction and penetrating in the thickness direction.
  • An absorbent article folding apparatus for folding an absorbent article including an absorbent body provided in two, wherein the absorbent article extends in the width direction of the absorbent article as viewed from the thickness direction. And a first region between one end portion in the length direction of the absorbent article and a second region between the fold line and the other end portion in the length direction of the absorbent article.
  • the portion of the absorber that is opposed to the first portion and does not have the penetrating portion is pushed in, and the second portion of the penetrating portion located in the second region is inserted into the second portion in the first region.
  • a compression device that folds the absorbent article to a thickness that is less than twice the thickness of the absorbent article by pushing in the absorbent body of the part that is opposed to the part and does not have the penetrating part; It has a transport device that transports the absorbent article with the bent portion of the absorbent article as a head in a state where the absorbent article is pressed in a direction in which the first region and the second region are pressed against each other. To do .
  • the non-existing portion of the second region is pushed into the first portion of the penetrating portion, and the penetrating portion of the first region is not inserted into the second portion of the penetrating portion.
  • the existing portion is pushed in, and the first portion and the second portion of the penetrating portion are prevented from being blocked by compression.
  • the absorbent article is folded in half, the portion where the penetrating portion may be crushed, that is, the folding position of the absorbent article is minimized, and the function of the penetrating portion is reduced. It is suppressed as much as possible.
  • FIG. 1 is a mimetic diagram showing one embodiment of a folding device used for implementation of a folding method of an absorptive article concerning the present invention.
  • FIG. 2 is (a) a plan view and (b) an AA enlarged end view schematically showing an embodiment of an absorbent article used in the method for folding an absorbent article according to the present invention.
  • 3A is a plan view schematically showing an absorbent body of the absorbent article
  • FIG. 3B is a diagram showing a state where the absorbent article is bent at a position of a folding line L.
  • FIG. 4A is a side view
  • FIG. 4A is a side view
  • FIGS. 4B is a plan view schematically showing a state in which the absorbent article is folded in two and conveyed in a folded state in the folding device of the folding device in FIG. .
  • FIGS. 5A and 5B are (a) a front view and (b) an enlarged partial cross-sectional view of BB schematically showing a state where the absorbent article is completely folded in the compression process.
  • 6A and 6B illustrate a bending process in the width direction, (a) a plan view in a state where the absorbent article is expanded, (b) a front view in a state where the absorbent article is bent in the width direction and the length direction, and (c) an enlarged view of CC It is an end view (however, the second sheet is omitted).
  • FIG. 5A and 5B are (a) a front view and (b) an enlarged partial cross-sectional view of BB schematically showing a state where the absorbent article is completely folded in the compression process.
  • 6A and 6B illustrate
  • FIG. 7 schematically shows an embodiment different from the bending process by the bending apparatus of FIG. 4
  • FIG. 1 shows an embodiment of a folding apparatus for absorbent articles according to the present invention.
  • the folding apparatus 1 of this embodiment is a folding apparatus for folding an absorbent article 2 to be folded into two.
  • the apparatus 3 and the compression apparatus 4 which compresses and folds the absorbent article 2 folded by the bending apparatus 3 in the direction which mutually crimps
  • Furthermore, it has the conveying apparatus 5 which conveys the absorbent article 2 folded by the compression apparatus 4.
  • the absorbent article 2 to be folded has a length direction, a width direction, and a thickness direction as shown in FIGS. 2 (a) and 2 (b), a liquid-permeable top sheet 10, and a liquid impermeability.
  • the back sheet 11 and the absorber 12 disposed between the top sheet 10 and the back sheet 11 are provided.
  • a second sheet 13 having liquid permeability and diffusing excretion liquid from the top sheet 10 is disposed between the top sheet 10 and the absorber 12. Therefore, the top sheet 10 and the second sheet 13 are positioned on the first surface side of the absorber, and the back sheet 11 is positioned on the second surface side, which is the surface opposite to the first surface.
  • the top sheet 10 and the second sheet 13, the second sheet 13 and the absorber 12, and the absorber 12 and the back sheet 11 are bonded to each other by a hot melt adhesive.
  • the lower side of a figure is the abdominal side which covers a wearer's belly, and the upper side is the back side which covers a wearer's back (buttock),
  • the absorbent article 2 of this embodiment is a so-called tape-type disposable diaper that is attached to the wearer using a tape when worn, and the absorbent body 12 is formed in a substantially rectangular shape as a whole when viewed from the thickness direction. It has been made.
  • the absorbent article 2 has a folding line L extending in the width direction of the absorbent article 2 and one end portion in the length direction of the absorbent article 2 as viewed from the thickness direction (in the case of FIG.
  • the first region 19 located between the side (the lower side) and the other end in the length direction of the bending line L and the absorbent article 2 (in the case of FIG. 2A, the back side (upper side)
  • the second region 20 is located between the second portion 20) and the second portion 20).
  • the absorbent article 2 is placed so that the top sheet 10 is inside, that is, the portion of the top sheet 10 located in the first region 19 and the top located in the second region 20.
  • the sheet 10 is bent so as to face each other and come into contact with each other.
  • the absorber 12 includes a penetrating portion that extends in the length direction and penetrates in the thickness direction.
  • the absorber 12 is juxtaposed in a non-contact state in the width direction of the absorber 12 and absorbs.
  • a pair of penetrating portions 14 and 15 are formed so as to be convex inward in the width direction of the body 12.
  • the pair of penetrating portions 14 and 15 are symmetrical with respect to the longitudinal axis of the absorber 12 as viewed in the thickness direction, and the width of the absorber 12. Even when the direction axis K is the axis of symmetry, the shape is symmetrical.
  • the thing containing cellulose-type water absorbing fibers such as a pulp, a thermoplastic resin fiber, a water absorbing polymer, etc. can be used, for example.
  • the pair of through portions 14 and 15 extend over both the first region 19 and the second region 20 and bend. It is formed in an asymmetric shape with the line L as an axis.
  • the fold line L is a straight line (imaginary line) that passes through the central portion in the length direction of the absorbent article 2 and extends in the width direction of the absorbent article 2.
  • a position (more specifically, closer to one end side in the length direction of the absorbent article 2).
  • the absorbent article 2 In the length direction of the absorbent article 2, the absorbent article 2 is disposed at a position near the end located on the abdomen side of the wearer. Therefore, the position of the central portion in the length direction of the absorbent body 12 does not coincide with the position of the central portion in the length direction of the absorbent article 2, that is, the position of the folding line L of the absorbent article 2. As a result, when the absorbent article 2 is bent along the folding line L, the absorbent body 12 is not bent at the center in the length direction. That is, the absorbent body 12 is bent at a position close to the end portion located on the back side of the wearer in the longitudinal direction of the absorbent body 12, so that the pair of through portions 14, 15 are folded lines. When L is the axis, the shape is asymmetric.
  • a pair of penetration parts 14 and 15 are formed in the mutually same width, These pair of penetration parts 14, A pair of side absorptions sandwiched between the central absorption part 16 sandwiched between 15 and both ends in the width direction of the absorbent body 12 and the one through part 14, 15 nearest to the pair of penetration parts 14, 15. Parts 17 and 18.
  • the width W 1 of the widest portion of the side absorption portions 17 and 18 is larger than the width W 2 of the narrowest portion of the central absorption portion 16.
  • the width W 1 of the widest portion of the side absorbent portions 17 and 18 is larger than the width W 2 of the narrowest portion of the central absorbent portion 16 because the absorbent article 2 is bent.
  • the conveying apparatus 5 it is for conveying the folded absorbent article 2 to conveyance direction MD stably and reliably.
  • the central absorbent part 16 of the first region 19 and the central absorbent part 16 of the second region 20 are joined. Are pressed against each other. Then, since the state in which the absorbent article 2 is folded or the folded state is not stable, in some cases, the overlap between the first region 19 and the second region 20 of the absorbent article is in the width direction (in this case, the expanded state).
  • the width direction of the absorbent article in the expanded state and the width direction of the folded or folded state indicate the same direction. ))
  • the balance in the width direction of folding and folding of the absorbent article 2 is lost, and there is a possibility that it cannot be shipped as a folding failure. Therefore, in this embodiment, the width W 1 of the widest part in side absorbent portions 17 and 18, to be larger than the width W 2 narrowest part of the central absorbent portion 16, the absorbent article
  • the side absorbent parts 17 and 18 are made thicker than the central absorbent part 16 when the sheet 2 is folded and folded.
  • the absorbent article 2 is balanced in the width direction. Can be folded and folded while keeping.
  • the bending apparatus 3 of the said folding apparatus 1 bends the absorbent article 2 into two in the length direction so that the 1st area
  • FIG. 4 As the bending device 3, the folding plate 30 that contacts the entire width of the absorbent article 2 is arranged in the thickness direction of the absorbent article 2 at the position of the folding line L. The absorbent article 2 is folded in two by piercing. Specifically, as shown in FIG. 4, the bending device 3 of this embodiment is wider than the width of the absorbent article 2 with respect to the absorbent article 2 conveyed with the top sheet 10 as an upper surface.
  • the folding plate 30 that moves up and down is lowered between the conveying rolls 31 and 32 along the fold line L from above, and the absorbent article 2 projects downward.
  • the absorbent article 2 is located on the second surface side of the absorbent body 12 and the portion of the top sheet 10 in the first region 19 located on the first surface side of the absorbent body 12 with respect to the folding line L. It is possible to bend the second region 20 so as to face the portion of the top sheet 10.
  • the bending device 3 pushes the absorbent article 2 between the transport rolls 31 and 32 while folding the absorbent article 2 into two by pushing the absorbent article 2 with the folding plate 30.
  • the folded absorbent article 2 can be held between a pair of conveying belts 33 and 34.
  • the pair of transport belts 33 and 34 are absorbent articles in which the space between the pair of transport belts 33 and 34 is folded in two by a plurality of support rolls 35 and 36 that support the respective transport belts 33 and 34. It is slightly narrower than the thickness of 2 (the size in the overlapping direction of the first region 19 and the second region 20). Thereby, the back sheet 11 of the 1st area
  • the absorbent article 2 is conveyed while pressing. Therefore, it is possible to transport the absorbent article 2 in the transport direction MD while stably maintaining the folded state of the absorbent article 2 starting from the folded portion.
  • the compression device 4 compresses the absorbent article 2 folded in two by the bending device 3 in the direction in which the first region 19 and the second region 20 are pressed against each other, and the folded absorbent article 2 is compressed.
  • the maximum thickness (the thickness in the overlapping direction when the first region 19 and the second region 20 are overlapped) is the thickness of the absorbent article 2 (the thickness of the absorbent article 2 before folding) Folding so that it is smaller than twice.
  • the absorbent article 2 is brought into pressure contact with the first region 19 and the second region 20, whereby the first portion 14 a located in the first region 19 in the penetrating portions 14 and 15 of the absorbent body 12.
  • the second region 20 is opposed to the first portions 14a and 15a and does not have the through portions 14 and 15 (hereinafter referred to as “penetration portion non-existing portion”) 20a. It is possible to push in.
  • the second portions 14 b and 15 b located in the second region 20 are opposed to the second portions 14 b and 15 b in the first region 19, and the through portions 14 and 15 do not exist.
  • the absorbent body 12 of the portion, that is, the through-portion non-existing portion 19a can be pushed in.
  • the folded absorbent article 2 is compressed by the compression device 4 into a state where a part of the absorbent body 12 is pushed into the through portions 14 and 15, thereby absorbing before folding. It is folded in a folded state to a thickness smaller than twice the thickness of the active article 2.
  • a device having an arbitrary configuration such as a pair of compression rolls and a pair of compression belts can be used.
  • a pair of upper and lower compression rolls 40 and 41 and a plurality of upper and lower support rolls 42 and 43 disposed upstream of the pair of compression rolls 40 and 41 in the transport direction MD are supported.
  • a pair of upper and lower compression belts 44 and 45 are used. It should be noted that the pair of compression belts 44 and 45 has a distance between the compression belts 44 and 45 narrowed by the support rolls 42 and 43 at the portion where the support rolls 42 and 43 are disposed.
  • the property article 2 is conveyed toward the direction of the compression rolls 40 and 41. Further, the distance between the pair of compression rolls 40 and 41 and the distance between the pair of compression belts 44 and 45 at the positions where the support rolls 42 and 43 are disposed are absorbed before folding (that is, in an expanded state).
  • the thickness is set to be smaller than twice the thickness of the property article 2.
  • the folded portion is passed to the top,
  • the absorbent article 2 is compressed stably and reliably, and is completely folded in a folded state.
  • the transport device 5 transports the absorbent article 2 folded in two by the compression device 4 in the transport direction MD while maintaining the folded state, for example, in a process for accommodating the absorbent product 2 in a packaging container, etc. It is sent out to such equipment.
  • it is the structure provided with a pair of conveyance belts 50 and 51 provided above and below the conveyance line, and the absorbent article 2 folded by these conveyance belts 50 and 51 is disposed in the thickness direction. It is configured to be conveyed in the conveyance direction MD while being held in a state where it is sandwiched between the first region 19 and the second region 20 and pressed so that the folded state is not released.
  • the case where one Embodiment of the folding method of the absorbent article which concerns on this invention is implemented using the folding device 1 which has the said structure is demonstrated.
  • the absorbent article 2 is folded in two at the folding line L, and the absorbent article 2 folded in two in the folding process is the first.
  • a compression step is performed in which the first region 19 and the second region 20 are compressed by being compressed in a direction in which they are pressed against each other.
  • the conveyance process which conveys the absorbent article 2 folded in the compression process is implemented.
  • an absorbent article 2 in this case, a disposable diaper
  • a liquid-permeable second sheet between the back sheet 11 and the absorbent body 12 having liquid absorbency, and between the top sheet 10 and the absorbent body 12
  • the manufacturing process of an absorbent article is implemented.
  • the absorbent body 12 having a pair of penetrating portions 14 and 15 extending in the length direction and penetrating in the thickness direction as a whole is used.
  • the absorbent article 2 manufactured in this manufacturing process is between the bending line L extending in the width direction of the absorbent article 2 and one end portion in the length direction of the absorbent article 2 when viewed from the thickness direction.
  • the first region 19 and the second region 20 between the fold line L and the other end of the absorbent article 2 in the length direction are provided.
  • the pair of penetrating portions 14 and 15 are formed in an asymmetric shape with the fold line L as an axis, extending over the first region 19 and the second region 20 of the absorber 12.
  • the symmetrical shape with the axis K in the width direction of the absorbent body 12 not overlapping with the bending line L in the thickness direction as the symmetry axis, and the axis in the length direction are symmetrical.
  • the shape is an axis that is arranged in parallel in a non-contact state in the width direction of the absorbent body 12 and is curved so as to be convex inward in the width direction of the absorbent body 12.
  • the bending process is performed after the manufacturing process of the absorbent article.
  • the absorbent article 2 is folded in two along the length direction so that the first region 19 and the second region 20 overlap each other along the fold line L.
  • the folding plate 30 of the bending device 3 pushes the position of the fold line L of the absorbent article 2 from the top sheet 10 side to the back sheet 11 side over the entire width of the absorbent article 2, The absorbent article 2 is folded in two. At that time, since the folding plate 30 contacts the entire width of the absorbent article 2 at the position of the folding line L, the absorbent article 2 can be reliably and stably folded at the folding line L.
  • the portion of the top sheet 10 located in the first region 19 and the portion of the top sheet 10 located in the second region 20 are in contact with each other. Further, the first surface (the surface on the top sheet side) of the absorbent body 12 located in the first region 19 and the first surface (the surface on the top sheet side) of the absorbent body 12 located in the second region 20 are mutually connected. It will be in the opposite state. After that, the absorbent article 2 struck by the folding plate 30 at the position of the folding line L is pushed out in the direction toward the back sheet 11 with the portion folded at the position of the folding line L as the head, and a pair of transport rolls 31. 32, and between the pair of transport belts 33, 34, it is pushed in a folded state.
  • the absorbent article 2 has a pair of penetrating portions 14, 15 extending over the first region 19 and the second region 20 and having an asymmetric shape about the fold line L. Therefore, the absorbent article 2 folded at the position of the folding line L is located in the first regions 14a and 15a located in the first region 19 and the second region 20 in the through portions 14 and 15. There is a portion where the second portions 14b and 15b do not overlap. That is, in the absorbent body 12 of the folded absorbent article 2, the positions of the first portion 14 a and the second portion 14 b are shifted from each other in one penetrating portion 14, and a non-overlapping portion is generated.
  • deviates mutually, and the part which does not overlap generate
  • the second portions 14b and 15b of the through portions 14 and 15 do not have the first portions 14a and 15a of the through portions 14 and 15 in the first region 19 facing the second portions 14b and 15b.
  • a portion, that is, a portion that faces the non-existing portion 19a of the first region 19 is generated.
  • the side absorbent parts 17, 18 of the absorber 12 are thicker than the central absorbent part 16.
  • the absorbent article 2 is provided with the side absorbent parts 17 and 18 in the first region 19 and the side absorbent parts 17 and 18 in the second region 20 in the absorbent body 12 via the top sheet 10 and the second sheet 13. 18 abuts before the central absorbent portion 16. Therefore, the absorbent article 2 can be folded while maintaining its balance in the width direction, and the absorbent article 2 in a bent state is also maintained in the width direction as a whole in its thickness balance. It can be conveyed straight in the conveying direction MD while being sandwiched between the pair of conveying rolls 31 and 32 and further between the pair of conveying belts 33 and 34.
  • the folding process is performed.
  • the absorbent article 2 folded in the folding step is compressed in the direction in which the first region 19 and the second region 20 are in pressure contact, and the absorbent article 2 is compressed into the absorbent article 2.
  • Fold completely in half as the thickness is less than twice the thickness.
  • the portion of the back sheet 11 in the first region 19 of the folded absorbent article 2 is pressed in the direction of the second region 20 by the compression rolls 40 and 41 and the compression belts 44 and 45 of the compression device 4.
  • the folded absorbent article 2 is compressed in the direction in which the first region 19 and the second region 20 are in pressure contact with each other. .
  • the thickness of the bent absorbent article 2 is the thickness of the absorbent article 2 (the thickness in the overlapping direction when the first region 19 and the second region 20 are overlapped). It compresses so that it may become smaller than twice (thickness of the absorbent article 2 before folding).
  • the absorbent article 2 has the top sheet 10 and the second sheet 13 on the first surface side of the absorbent body 12, so In addition to the absorber 12 of the through-hole nonexistent portion 20a of the second region 20, the top sheet 10 and the second overlapping the absorber 12 of the through-portion nonexistent portion 20a The sheet 13 is also pushed in. Further, since the top sheet 10 and the second sheet 13 exist also at the positions of the through portions 14 and 15, the opening portion on the first surface side of the through portions 14 and 15 is blocked by the top sheet 10 and the second sheet 13. ing.
  • the second portions 14 b and 15 b located in the second region 20 in the penetrating portions 14 and 15 are opposed to the second portions 14 b and 15 b in the first region 19.
  • the absorber 12 of the penetration part nonexistent part 19a is pushed.
  • the penetrating portion non-existing portion 19a in the inside of the second portions 14b and 15b of the penetrating portions 14 and 15, in addition to the absorber 12 of the penetrating portion non-existing portion 19a in the first region 19, the penetrating portion non-existing portion 19a
  • the top sheet 10 and the second sheet 13 overlapping the absorber 12 are also pushed.
  • the absorbent body 12 and the top sheet 10 of the opposing through-portion non-existing portions 20a and 19a are formed inside the first portions 14a and 15a and the second portions 14b and 15b of the through-portions 14 and 15.
  • the second sheet 13, the top sheet 10 and the second sheet 13 in the opening portion on the first surface side of the through portions 14 and 15 are pushed in.
  • the absorber 12 of the penetrating portion non-existing portions 19a and 20a not only the absorber 12 of the penetrating portion non-existing portions 19a and 20a but also the second sheet 13 of the top sheet 10 of the penetrating portion non-existing portions 19a and 20a is provided in the penetrating portions 14 and 15.
  • the absorber 12 which is pushed out into the penetrating portions 14 and 15 by compression and protrudes A larger reaction force can be applied to suppress the protrusion, and the penetration portions 14 and 15 can be more reliably prevented from being blocked.
  • the transport process is performed.
  • the folded absorbent article 2 is pressed in the direction in which the first region 19 and the second region 20 are pressed against each other, and the folded portion of the absorbent article 2 is used as a leading packaging container such as a packaging bag.
  • the conveyance belts 50 and 51 of the conveyance device 5 are in pressure contact with the backsheet 11 in the first region 19 and the backsheet 11 in the second region 20 in the folded absorbent article 2, and convey these By sandwiching the absorbent article 2 folded between the belts 50 and 51, the first region 19 and the second region 20 are conveyed while being pressed.
  • the absorbent article 2 since the width W 1 of the widest part in side absorbent portions 17, 18 of the absorbent body 12 is greater than the widest width W 2 of the narrower portion in the central absorbent portion 16, In the folded absorbent article 2, the side absorbent parts 17 and 18 of the absorbent body 12 are thicker than the central absorbent part 16. Therefore, in the width direction, both sides of the folded absorbent article 2 in the width direction are mainly pressed by the conveyor belts 50 and 51, and these conveyor belts are compared to the case where only the central side is pressed. The absorbent article 2 in which 50 and 51 are folded is stably sandwiched. Therefore, the absorbent article 2 in a folded state can be conveyed substantially straight with good balance without being biased in the width direction CD perpendicular to the conveyance direction MD during conveyance.
  • the absorbent article 2 when the absorbent article 2 is folded, the first portions 14a and 15a of the penetrating portions 14 and 15 and the second portion. In a portion where 14b and 15b do not overlap, the first portion 14a and 15a of the penetrating portion 14 and 15 are pushed into the non-existing portion 20a of the second region 20 and the second region 14b and 15b are in the first region. 19 through-portion non-existing portions 19a are pushed.
  • the absorbent article 2 can suppress a decrease in the function of diffusing excretion due to the penetrating portions 14 and 15 of the absorbent body 12, and can prevent a decrease in the absorption performance of the absorbent body 12.
  • the absorbent article 2 is folded and folded in a half-folded state.
  • a part of the absorbent body is particularly easily pushed into or protruded into the penetrating portion during compression.
  • the penetrating part is formed in an asymmetric shape with the folding line of the absorbent article as an axis, the bent part is likely to face each other at the position of the folding line. There is a high possibility that there will be no absorber that can be pushed into this part. For this reason, the penetrating portion tends to be easily blocked at the position of the folding line of the absorbent article.
  • the absorbent article is folded in two and folded, so that a portion where the penetrating portion of the absorbent body may be blocked can be minimized, and the function of the penetrating portion (diffusion fluid diffusion) Can be suppressed as much as possible.
  • the absorbent body 12 of the absorbent article 2 is disposed so as to correspond to the excretion position of the excretion liquid from the wearer being shifted from the center in the length direction of the disposable diaper. It is biased to one end side in the length direction (the side corresponding to the abdomen when worn).
  • the portion where the penetrating portions 14 and 15 are blocked is not located at the excretion position of the excretion liquid, and the diffusion of the excretion liquid is less likely to be inhibited compared to the case of bending and folding a plurality of times such as tri-folding or quadruple folding. .
  • the absorbent article 2 in the said embodiment, in the bending process, is bent only in the length direction at the position of the bending line L extending in the width direction.
  • the pair of side regions provided at both ends in the width direction of the absorbent article are directed inward in the width direction of the absorbent article.
  • folds so that the both ends edge of the width direction of the said absorbent article may mutually oppose may be included.
  • the folding step in the width direction is performed on the absorbent article 2 in an unfolded state before the folding step.
  • a pair of fold lines M and N extending in the length direction are set at both end portions in the width direction of the sheet, and a pair positioned outside the width direction of the absorbent article 2 from the position of the pair of fold lines M and N.
  • Side regions 25 and 26 are bent toward the inside in the width direction of the absorbent article 2 so that both end edges in the width direction of the absorbent article 2 face each other.
  • the pair of side regions of the absorbent article are folded inward in the width direction upstream of the bending device (for bending in the length direction) in the conveyance direction MD of the absorbent article.
  • a known device can be used as the bending device for bending in the width direction.
  • regions 25 and 26 folded in the position of a pair of bending lines M and N is a pair of these
  • the thickness is increased by the thickness of the side regions 25 and 26. Therefore, when the absorbent article in which the pair of side regions 25 and 26 are bent in the bending process in the width direction is bent in the length direction at the folding line L in the subsequent bending process, Side regions 25 and 26 of the first region 19 and side regions 25 and 26 of the second region 20 that are bent at both sides in the width direction of the absorbent article 2, that is, at the positions of the pair of folding lines M and N. First contact each other.
  • the absorbent article 2 can be stably bent in the length direction while maintaining the balance in the width direction.
  • the absorbent article 2 that is bent in the length direction in the bending process and further folded by compression in the compression process is the thickness of the absorbent article 2 in which the side regions 25 and 26 are bent to increase the thickness. Both sides in the width direction can be stably sandwiched between the pair of transport belts 33 and 34 of the bending device 3 and the pair of transport belts 50 and 51 of the transport device 5.
  • the absorbent article 2 bent and folded in the length direction can be transported almost straightly in a balanced manner without being biased toward the width direction CD orthogonal to the transport direction MD.
  • an absorbent article 2 is folded in two.
  • the absorbent article may be folded in two using another means.
  • the thickness direction of the absorbent article that extends in the width direction of the absorbent article 2 and is arranged outside the both edges of the absorbent article 2 in the width direction.
  • the absorbent article 2 can be folded in two using a folding device 60 provided with a pair of rotatable rotating members 61, 62.
  • the bending device 60 has a configuration in which a pair of rotating members 61 and 62 are disposed in place of the folding plate 30 of the above-described embodiment, and the other configurations, the conveyance roll and the conveyance belt are substantially the same configuration. In order to achieve the same effect, the same reference numerals are assigned and detailed description is omitted.
  • the pair of rotating members 61 and 62 of the bending device 60 are rotated in synchronization with each other (in the direction of the arrow in FIG. 7A). Then, the pair of rotating members 61 and 62 are simultaneously placed at the position of the folding line L on the first surface side of the absorbent body 12 (FIG. 7A). In case of), press from above.
  • the rotating members 61 and 62 are the top sheet 10 and the second sheet 13 where the penetrating portions 14 and 15 are located.
  • the absorbent article 2 is pushed between the conveyance rolls 31 and 32 and is pressed by the conveyance belts 33 and 34 while being bent in two at the position of the folding line M by the pair of rotating members 61 and 62. It can be conveyed toward the compression process in the state of being sandwiched.
  • the absorbent article 2 becomes the structure by which the 2nd sheet
  • seat 13 is a sheet
  • the absorbent body of the absorbent article includes an absorbent core composed of pulp, thermoplastic resin fibers, absorbent polymer, and the like, and a covering sheet such as a liquid-permeable tissue that covers the outer peripheral surface of the absorbent core. It is good also as a structure. In this case, in the compression step, one or both of the absorption core and the covering sheet of the penetration portion nonexistent portion are pushed into the penetration portion.
  • the absorber 12 includes a pair of through portions that are arranged in parallel in a non-contact state in the width direction of the absorber 12 and are curved so as to protrude inward in the width direction of the absorber 12. It has become.
  • any shape and number can be used as long as it extends over the first region and the second region of the absorbent article and is formed in an asymmetric shape with the folding line as an axis. be able to.
  • the pair of penetrating portions 14 and 15 of the absorber 12 are formed to have the same width, and the central absorbent portion 16 sandwiched between the pair of penetrating portions 14 and 15 and the absorber 12 It has a pair of side absorption parts 17 and 18 sandwiched between both ends in the width direction and one of the nearest penetration parts of the pair of penetration parts 14 and 15, and is the widest in the side absorption parts 17 and 18.
  • the width W 1 of such a portion is equal to or greater than the width W 2 of the narrowest portion in the central absorbent portion 16.
  • the width W 1 does not necessarily have to be larger than the width W 2 as long as there is no problem in transporting the absorbent article.
  • the absorber 12 may be the structure which laminated
  • the absorbent layer located on the top sheet side may be caused to function as a temporary reservoir until the other absorbent layer located on the back sheet side completely absorbs the excretion fluid of the wearer. Good.
  • an absorbent article having an absorbent body having a structure in which a plurality of absorbent layers are stacked is folded in two, in the compression step, the first portion of the penetrating portion is not inside the penetrating portion of the second region. Any absorbent layer located in the existing region, for example, the absorbent layer located closest to the top sheet may be pushed in.
  • any one of the absorption layers positioned in the penetration portion non-existing region of the first region may be pushed into the second portion of the penetration portion.
  • the one part layer of the absorption layer which comprises the absorber is the cellulose fiber which was excellent in absorptivity and was excellent in absorptivity.
  • the absorption performance of the absorber can be improved.
  • the absorbent article 2 bent into two with the compression apparatus 4 is made into 1st area
  • region 20 was implemented.
  • the bending step and the compression step can be performed at the same time, and when the absorbent article is folded in two, it may be compressed in the direction in which the first region and the second region are pressed together.
  • the folding device for example, after folding the absorbent article into two with a folding plate or a pair of rotating members, a pair of conveying belts pushed by these folding plates or the like function as a compression belt, It is good also as a structure which compresses the absorbent article bent in the two in the direction which presses a 1st area
  • the disposable diaper is employ
  • the absorbent article used as the object of folding in this invention arbitrary things, such as sanitary napkins other than a disposable diaper, an incontinence pad, a panty liner, etc. Can be adopted.

Landscapes

  • Health & Medical Sciences (AREA)
  • Epidemiology (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Absorbent Articles And Supports Therefor (AREA)

Abstract

Un procédé pour plier un article absorbant selon la présente invention comprend : une étape de courbure pour courber un article absorbant (2) en deux dans la direction de longueur, au niveau d'une ligne de courbure (L), de telle sorte qu'une première région (19) et une seconde région (20) se chevauchent ; une étape de compression pour comprimer l'article absorbant courbé (2) dans une direction dans laquelle la première région (19) et la seconde région (20) sont pressées ensemble, presser, dans des premières parties (14a, 15a) de parties traversantes (14, 15), un corps absorbant (12) de parties non-présentes de parties traversantes (20a) de la seconde région (20), et presser, dans des secondes parties (14b, 15b) des parties traversantes (14, 15), le corps absorbant (12) de parties non-présentes de parties traversantes (19a) de la première région (19), ce qui permet de plier l'article absorbant (2) dans une épaisseur qui est inférieure à deux fois l'épaisseur de l'article absorbant (2) ; et une étape de transport pour transporter, tout en pressant ensemble la première région (19) et la seconde région (20), l'article absorbant plié (2) avec la partie courbée de l'article absorbant (2) comme extrémité avant de ce dernier.
PCT/JP2015/078232 2015-05-22 2015-10-05 Dispositif de pliage et procédé de pliage d'article absorbant Ceased WO2016189759A1 (fr)

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CN201580080156.8A CN107613921B (zh) 2015-05-22 2015-10-05 吸收性物品的折叠方法以及折叠装置

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JP2015104715A JP5938126B1 (ja) 2015-05-22 2015-05-22 吸収性物品の折畳方法及び折畳装置
JP2015-104715 2015-05-22

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WO2019131269A1 (fr) * 2017-12-28 2019-07-04 ユニ・チャーム株式会社 Article absorbant
US10966882B2 (en) 2017-12-21 2021-04-06 Essity Hygiene And Health Aktiebolag Absorbent article and method for manufacturing absorbent article
US11007095B2 (en) 2017-12-21 2021-05-18 Essity Hygiene And Health Aktiebolag Absorbent article and method for manufacturing an absorbent article
US11147721B2 (en) 2017-12-21 2021-10-19 Essity Hygiene And Health Aktiebolag Absorbent article and method for manufacturing an absorbent article
US11229561B2 (en) 2017-12-21 2022-01-25 Essity Hygiene And Health Aktiebolag Absorbent article and method for manufacturing an absorbent article
US11612525B2 (en) 2017-12-21 2023-03-28 Essity Hygiene And Health Aktiebolag Absorbent article and method for manufacturing an absorbent article
US11793683B2 (en) 2017-12-21 2023-10-24 Essity Hygiene And Health Aktiebolag Absorbent article and method for manufacturing an absorbent article
US11833015B2 (en) 2017-12-21 2023-12-05 Essity Hygiene And Health Aktiebolag Absorbent article and method for manufacturing an absorbent article
US12102514B2 (en) 2017-12-21 2024-10-01 Essity Hygiene And Health Aktiebolag Absorbent article and method for manufacturing an absorbent article

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US10966882B2 (en) 2017-12-21 2021-04-06 Essity Hygiene And Health Aktiebolag Absorbent article and method for manufacturing absorbent article
US11007095B2 (en) 2017-12-21 2021-05-18 Essity Hygiene And Health Aktiebolag Absorbent article and method for manufacturing an absorbent article
US11147721B2 (en) 2017-12-21 2021-10-19 Essity Hygiene And Health Aktiebolag Absorbent article and method for manufacturing an absorbent article
US11229561B2 (en) 2017-12-21 2022-01-25 Essity Hygiene And Health Aktiebolag Absorbent article and method for manufacturing an absorbent article
US11612525B2 (en) 2017-12-21 2023-03-28 Essity Hygiene And Health Aktiebolag Absorbent article and method for manufacturing an absorbent article
US11793683B2 (en) 2017-12-21 2023-10-24 Essity Hygiene And Health Aktiebolag Absorbent article and method for manufacturing an absorbent article
US11833015B2 (en) 2017-12-21 2023-12-05 Essity Hygiene And Health Aktiebolag Absorbent article and method for manufacturing an absorbent article
US12102514B2 (en) 2017-12-21 2024-10-01 Essity Hygiene And Health Aktiebolag Absorbent article and method for manufacturing an absorbent article
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JP5938126B1 (ja) 2016-06-22
CN107613921B (zh) 2021-03-09
JP2016214669A (ja) 2016-12-22

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