WO2013015278A1 - Couche jetable, et procédé de fabrication de celle-ci - Google Patents

Couche jetable, et procédé de fabrication de celle-ci Download PDF

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Publication number
WO2013015278A1
WO2013015278A1 PCT/JP2012/068700 JP2012068700W WO2013015278A1 WO 2013015278 A1 WO2013015278 A1 WO 2013015278A1 JP 2012068700 W JP2012068700 W JP 2012068700W WO 2013015278 A1 WO2013015278 A1 WO 2013015278A1
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WO
WIPO (PCT)
Prior art keywords
adhesive layer
sheet
side panel
main body
layer
Prior art date
Application number
PCT/JP2012/068700
Other languages
English (en)
Japanese (ja)
Inventor
拓郎 梁島
俊明 一萬田
浩志 丸山
進之介 森田
Original Assignee
花王株式会社
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 花王株式会社 filed Critical 花王株式会社
Priority to CN201280037946.4A priority Critical patent/CN103717187B/zh
Publication of WO2013015278A1 publication Critical patent/WO2013015278A1/fr

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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
    • 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 articles specially adapted to be worn around the waist, e.g. diapers
    • A61F13/49007—Form-fitting, self-adjusting disposable diapers
    • A61F13/49009—Form-fitting, self-adjusting disposable diapers with elastic means
    • A61F13/49014—Form-fitting, self-adjusting disposable diapers with elastic means the elastic means is located at the side panels
    • A61F13/49015—Form-fitting, self-adjusting disposable diapers with elastic means the elastic means is located at the side panels the elastic means being elastic panels
    • 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
    • A61F13/15577—Apparatus or processes for manufacturing
    • A61F13/15585—Apparatus or processes for manufacturing of babies' napkins, e.g. diapers
    • A61F13/15593—Apparatus or processes for manufacturing of babies' napkins, e.g. diapers having elastic ribbons fixed thereto; Devices for applying the ribbons
    • A61F13/15601—Apparatus or processes for manufacturing of babies' napkins, e.g. diapers having elastic ribbons fixed thereto; Devices for applying the ribbons the ribbons being applied transversely to the direction of the movement of the webs the diapers are being made of
    • 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
    • A61F13/56—Supporting or fastening means
    • A61F13/5622—Supporting or fastening means specially adapted for diapers or the like
    • 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
    • A61F13/56—Supporting or fastening means
    • A61F13/5622—Supporting or fastening means specially adapted for diapers or the like
    • A61F13/5633—Supporting or fastening means specially adapted for diapers or the like open type diaper

Definitions

  • the present invention relates to a disposable diaper and a manufacturing method thereof.
  • an unfoldable disposable diaper in which a stretchable side panel that extends and contracts in the width direction of the absorbent main body is attached to a portion of the absorbent main body including the absorbent body that is disposed on the back side of the wearer when worn. It is known (see Patent Document 1).
  • This type of disposable diaper can be manufactured by adding the side panel material in a separate process from the absorbent main body and adding it to the absorbent main body. Waste generated from the material can be suppressed, which is excellent in terms of environment and cost.
  • Patent Document 1 since the reinforcing nonwoven fabric layer is formed by integrally folding all the sheet materials constituting the side panel, the end portion of the side panel on the absorbent main body side, Since the rigidity of the joint between the panel and the fastening tape becomes too high and the adhesive layer for bonding the layers increases, the flexibility and breathability of the diaper are likely to be hindered.
  • an object of the present invention is to provide a disposable diaper in which the bonding strength between the side panel and the absorbent main body is increased while suppressing a decrease in flexibility of the diaper.
  • the present invention includes an absorbent body including an absorbent body and an outer layer composite sheet disposed on the outer surface side of the absorbent body, and a stretchable side panel attached to one or both sides of the absorbent body.
  • a disposable diaper is provided.
  • the side panel has two sheets and an elastic member fixed between the two sheets, and a fastening tape is provided at the tip.
  • the outer layer composite sheet has a liquid-impervious or liquid-impervious leak-proof sheet and an outer-layer nonwoven fabric joined to the outer surface side of the leak-proof sheet via an outer-layer adhesive layer.
  • the side panel fixes a body-side adhesive layer fixing the end of the elastic member on the side of the absorbent main body or the vicinity thereof, and an end of the elastic member on the side of the tip of the side panel or the vicinity thereof.
  • the side panel on the side of the absorbent main body that is reinforced with a reinforcing adhesive layer that overlaps or is continuous with the main body side adhesive layer.
  • the end portion thus bonded is joined to the outer layer composite sheet by a connecting adhesive layer.
  • the main body side adhesive layer is formed to be spaced outward from the outer layer adhesive layer, and the main body side adhesive layer, the reinforcing adhesive layer, and the connection adhesive layer And the said outer layer adhesive bond layer is provided so that a clearance gap may not arise in a diaper width direction.
  • the present invention also includes an absorbent body including an absorbent body and an outer layer composite sheet disposed on the outer surface side of the absorbent body, and a stretchable side panel attached to one or both sides of the absorbent body.
  • a disposable diaper provided is provided.
  • the side panel has two sheets and an elastic member fixed between the two sheets, and a fastening tape is provided at the tip.
  • the outer layer composite sheet has a liquid-impervious or liquid-impervious leak-proof sheet and an outer-layer nonwoven fabric joined to the outer surface side of the leak-proof sheet via an outer-layer adhesive layer.
  • the absorbent main body includes a surface sheet disposed on the inner surface side of the absorbent body and a three-dimensional guard forming sheet bonded to both sides of the surface sheet, and the three-dimensional guard forming sheet is a single sheet.
  • the sheet is folded and laminated, and has a two-layer structure portion where the layers are joined, and the two-layer structure portion is joined to the side panel (hereinafter referred to as the second invention, Refers to the invention).
  • FIG. 1 is the expansion
  • FIG. 2 is a perspective view showing a wearing state of the disposable diaper shown in FIG. 1.
  • FIG. 3 is an enlarged plan view showing a side panel of the disposable diaper shown in FIG. 1 and the vicinity thereof. 4 is a cross-sectional view taken along line IV-IV in FIG.
  • FIG. 5 is a cross-sectional view (corresponding to FIG. 4) showing the side panel and the vicinity thereof in the second embodiment of the present invention.
  • FIG. 6 is a cross-sectional view (corresponding to FIG. 4) showing the side panel and the vicinity thereof in the third embodiment of the present invention.
  • FIG. 7 is a cross-sectional view (corresponding to FIG.
  • FIG. 8 is a perspective view illustrating an example of a method for manufacturing a side panel according to the first embodiment.
  • FIG. 9 is a perspective view illustrating an example of a method for manufacturing a side panel according to the second embodiment.
  • FIG. 10 is a developed plan view showing still another embodiment of the present invention.
  • FIG. 11 is an enlarged plan view showing a side panel in still another embodiment of the present invention.
  • FIG. 12 is an enlarged plan view showing a side panel in still another embodiment of the present invention.
  • FIG. 13 is an enlarged plan view of a side panel and the vicinity thereof showing a preferred joining mode of the side panel and the absorbent main body.
  • the disposable diaper 1 (hereinafter also referred to as diaper 1) of the first embodiment of the present invention includes an absorbent body 23 and an absorption composite sheet 22 disposed on the outer surface side of the absorbent body 23 as shown in FIG. Main body 2 and side panels 3 and 3 attached to both sides of absorbent main body 2.
  • the absorptive main body 2 has a vertically long shape, as shown in FIG. And a crotch part C located in the crotch part. As shown in FIG. 1, the absorbent main body 2 has a rectangular shape in a state where the absorbent main body 2 is expanded in a planar shape.
  • the side panels 3 and 3 are attached to both side portions of the absorbent main body 2 in the back side portion B so as to protrude outward from both side edge portions of the absorbent main body 2.
  • the longitudinal direction of the disposable diaper 1 is the Y direction in the figure, and is the same direction as the longitudinal direction of the absorbent main body.
  • the width direction of the disposable diaper 1 is the X direction in the figure, and is the same direction as the width direction of the absorbent main body 2.
  • the longitudinal direction of the diaper or the direction corresponding to the longitudinal direction of the diaper component is simply the Y direction
  • the width direction of the diaper or the direction corresponding to the diaper width direction of the diaper component is simply X.
  • direction also called direction.
  • the inner surface of the diaper or diaper component is a surface that is directed toward the wearer's skin when worn, and the outer surface of the diaper or diaper component is directed away from the wearer's skin when worn. It is the surface that is.
  • the absorbent main body 2 includes a liquid-permeable surface sheet 21, an outer composite sheet 22, and a liquid-retaining absorbent 23 interposed between the two sheets 21 and 22.
  • the outer composite sheet 22 includes a liquid impervious or liquid impervious (including water repellency) leakproof sheet 22a and an outer layer adhesive layer 61 on the outer surface side (Q side in FIG. 4) of the leakproof sheet 22a.
  • an outer layer nonwoven fabric 22b joined via each other.
  • the outer layer nonwoven fabric 22b has the same shape in plan view as the absorbent main body 2
  • the leak-proof sheet 22a has the same plan view shape as the outer layer nonwoven fabric 22b except that the width in the X direction is slightly smaller as shown in FIG. is doing. Due to the presence of the outer layer nonwoven fabric 22b, the touch of the outer surface of the diaper is good.
  • solid guard forming sheets 24 and 24 are disposed on both sides of the absorbent main body 2 in the longitudinal direction along the longitudinal direction.
  • the three-dimensional guard forming sheet 24 is adhesive on the top sheet 21, the outer composite sheet 22 extending from the side edge of the top sheet, and the sheet 31 constituting the side panel 3 on both sides in the longitudinal direction of the absorbent main body 2.
  • the layers 62 and 66 to 68 are fixed.
  • the adhesive layers 62, 66, and 67 are formed over substantially the entire length of the absorbent main body 2, but the adhesive layer 68 is provided on the ventral side A and the back side B while the crotch portion C is not provided.
  • Each three-dimensional guard forming sheet 24 has a three-dimensional guard-forming elastic member 25 along the edge in the vicinity of the inner edge in the width direction (X direction) of the absorbent main body 2. Due to the contraction force of the elastic member 25, a portion of the crotch part C having a predetermined width from the edge is separated from the topsheet 21 to form a three-dimensional guard. Moreover, the elastic member 26 for leg gather formation is distribute
  • the three-dimensional guard forming sheet 24 shown in FIG. 4 is a two-layer structure in which a single sheet is folded as shown in FIG. 4, and a heat-sealed portion (not shown) in which the two layers are arranged in a dotted pattern. Are joined to form a single sheet.
  • one sheet can be used as the three-dimensional guard forming sheet 24 without being folded.
  • the diaper 1 is formed symmetrically with respect to the longitudinal center line CL of the absorbent main body 2. Therefore, the configuration of the side panels 3 and 3 and the manner of joining them with the absorbent main body 2 and the fastening tape 4 will be described mainly using the left side panel in FIG. 1 as an example, but the right side panel is also left and right. It is the same except that it becomes symmetric.
  • the side panel 3 in the diaper 1 has a rectangular shape in a state of being expanded in a planar shape. Moreover, as shown in FIG. 4, the side panel 3 is fixed between the two sheets 31 and 32 made of nonwoven fabric and the two sheets 31 and 32 in a state of extending in the diaper width direction (X direction). And a plurality of elastic members 33. A fastening tape 4 for fixing the side panel 3 to another part is provided at the tip 3a of the side panel 3. Each of the elastic members 33 is disposed along the width direction (X direction) of the diaper 1. In addition, the plurality of elastic members 33 in each side panel 3 are arranged at substantially equal intervals in the longitudinal direction (Y direction) of the diaper.
  • the side panel 3 in the diaper 1 of 1st Embodiment has the main body side adhesive bond layer 35, the front end side adhesive bond layer 36, and the some intermediate
  • These adhesive layers 35, 36, and 37 are all formed so as to extend in the diaper longitudinal direction (Y direction). Further, in these adhesive layers 35, 36, and 37, a plurality of elastic members 33 are fixed between the two sheets 31 and 32 via an adhesive constituting each adhesive layer, and In a portion where the elastic member 33 is not interposed, the two sheets 31 and 32 are directly joined to each other via an adhesive constituting each adhesive layer.
  • the main body side adhesive layer 35 is provided on the absorbent main body 2 side in the extending direction of the side panel 3, and fixes the end of the individual elastic member 33 on the absorbent main body 2 side or the vicinity thereof.
  • the front-end-side adhesive layer 36 is provided on the front-end portion 3a side in the extending direction of the side panel 3, and fixes the end portion of each elastic member 33 on the front-end portion 3a side of the side panel 3 or the vicinity thereof.
  • a plurality of intermediate adhesive layers 37 are provided in the intermediate region 30 which is a region between the main body side adhesive layer 35 and the front end side adhesive layer 36 in the extending direction of the side panel 3.
  • the intermediate adhesive layer 37 is smaller in width than both of the adhesive layers 35 and 36, and a plurality of intermediate adhesive layers 37 are intermittently formed in the intermediate region 30.
  • a plurality of intermediate adhesive layers 37 are intermittently formed in the intermediate region 30.
  • the extending direction of the side panel 3 coincides with the diaper width direction.
  • the main body side adhesive layer 35, the tip side adhesive layer 36, and the intermediate adhesive layer 37 all cross a plurality of (more preferably three or more) elastic members 33 extending in the X direction in the longitudinal direction of the diaper ( (Y direction).
  • the main body side adhesive layer 35, the front end side adhesive layer 36, and the intermediate adhesive layer 37 all extend in the longitudinal direction of the diaper (Y direction) across all the elastic members 33 extending in the X direction. It is more preferable that it extends over the entire length between the upper and lower edges 3u, 3d of the side panel 3.
  • the non-bonding region 38 extends in the longitudinal direction of the diaper (Y direction) intersecting with a plurality of (more preferably 3 or more) elastic members 33 extending in the X direction.
  • the non-bonding region 38 also preferably extends in the longitudinal direction of the diaper (Y direction) across all the elastic members 33 extending in the X direction, and extends over the entire length between the upper and lower edges 3u, 3d of the side panel 3. More preferably.
  • the side panel 3 in the first embodiment is reinforced such that the end 3 b on the absorbent main body 2 side (hereinafter also referred to as a base end 3 b) partially overlaps the main body-side adhesive layer 35. It is reinforced with the adhesive layer 63 for use. More specifically, as shown in FIG. 4, the sheet 32 positioned on the outer surface side (Q side in FIG. 4) of the two sheets 31 and 32 constituting the side panel 3 is provided. The base panel 3b of the side panel 3 is folded back to the outer surface side (Q side in FIG. 4) of the sheet 32, and the folded portion is the outer surface of the sheet 32 via the reinforcing adhesive layer 63. It is joined to.
  • the sheet 31 positioned on the inner surface side (P side in FIG. 4) of the side panel 3 is also on the outer surface side of the sheet 31. Also not folded. Since the base end portion 3b of the side panel 3 is reinforced by such a configuration, the base panel 3b has a moderately high rigidity and has a sufficient strength that is not easily damaged by a tensile force in the X direction. Regarding the direction in which the sheet constituting the side panel is folded, the “inner side of the sheet” is the P side in the figure (the side facing the skin side of the wearer of the side panel), and the “outer side of the sheet” is the figure. This is the middle Q side (the side facing away from the skin of the side panel wearer).
  • the base end 3 b reinforced in this way is joined to the outer layer composite sheet 22 by the connecting adhesive layer 62.
  • the connecting adhesive layer 62 shown in FIG. 4 joins between the base end 3b of the side panel 3 and the leak-proof sheet 22a, and also connects the base end 3b of the side panel 3 and the leak-proof sheet 22a.
  • the outer layer nonwoven fabric 22b extending from the end edge and the leakage preventing sheet 22a and the three-dimensional guard forming sheet 24 and / or the surface sheet 21 are joined. It is preferable that the base end portion 3 b of the side panel is joined to a portion where the leak-proof sheet 22 a and the outer nonwoven fabric 22 b are integrated with the outer adhesive layer 61.
  • the base end portion 3b (the end portion on the absorbent main body side) of the side panel is joined to a portion where the leakproof sheet 22a and the outer layer nonwoven fabric 22b are integrated via the outer layer adhesive layer 61. It is preferable.
  • the main body side adhesive layer 35 is formed to be spaced outward from the outer layer adhesive layer 61. That is, the main body side adhesive layer 35 is formed outward (left side in FIG. 4) from the end 61a of the outer layer adhesive layer 61 on the outer side in the diaper width direction.
  • the agent layer 61 is formed so as to be spaced apart in the X direction without having overlapping portions.
  • the main body side adhesive layer 35, the reinforcing adhesive layer 63, the connecting adhesive layer 62, and the outer adhesive layer 61 are spaced apart from each other in the diaper width direction. It is overlapped so that the existing part) does not occur.
  • the main body side adhesive layer 35 and the reinforcing adhesive layer 63 have a portion P3 that overlaps each other, and the reinforcing adhesive layer 63 and the connecting adhesive layer 62 also have a portion P2 that overlaps each other.
  • the adhesive layer 62 and the outer adhesive layer 61 also have a portion P1 that overlaps each other.
  • One sheet is interposed between two adhesive layers that overlap each other, one adhesive layer is bonded to one side of the sheet, and the other adhesive layer is bonded to the other side of the sheet. ing.
  • the main body side adhesive layer 35, the reinforcing adhesive layer 63, the connecting adhesive layer 62, and the outer adhesive layer 61 are formed by shifting the center position in the width direction in the X direction.
  • these adhesive layers 35, 63, 62, 61 are such that the end portions 35a, 63a, 62a, 61a on the front end portion 3a side of the side panel 3 are inward from the outer side in the X direction (left side in FIG. 4). They are arranged in this order toward the side (right side in FIG. 4).
  • the main body-side adhesive layer 35, the reinforcing adhesive layer 63, the connecting adhesive layer 62, and the outer adhesive layer 61 are formed on the entire length of the fastening tape 4 in the Y direction in the above-described mode (in particular, the mode shown in FIG. 4). It is preferable to extend over the entire length, and in the same manner, it is more preferable to extend over the entire length of the side panel 3 in the Y direction.
  • the side panel 3 in the first embodiment is also reinforced by using a second reinforcing adhesive layer 64 that partially overlaps the front end side adhesive layer 36.
  • the sheet 32 positioned on the outer surface side (Q side in FIG. 4) of the two sheets 31 and 32 constituting the side panel 3 is provided.
  • the side panel 3 is folded back to the outer surface side (Q side in FIG. 4) of the sheet 32, and the folded portion of the sheet 32 is interposed through the second reinforcing adhesive layer 64. It is joined to the outer surface.
  • the sheet 31 positioned on the inner surface side (P side in FIG. 4) of the side panel 3 is not folded back on the outer surface side or the inner surface side of the sheet 31. Since the front end portion 3a of the side panel 3 is reinforced by such a configuration, it has a reasonably high rigidity and a sufficient strength that is not easily damaged by the tensile force in the X direction.
  • the tip portion 3 a reinforced in this manner is joined to the fastening tape 4 by the second connecting adhesive layer 65.
  • the fastening tape 4 includes a tape base material 42 and a male member of a mechanical hook-and-loop fastener that is bonded to the tape base material 42 to form a fastening portion 41. And the part which consists only of the tape base material 42 in the fastening tape 4 overlaps with the front-end
  • a landing zone 5 for fastening the fastening tape 4, more specifically, a fastening part 41 of the fastening tape 4, is provided on the outer surface of the ventral side A of the diaper 1.
  • the tip-side adhesive layer 36 is formed so as to be spaced inward from the second connection adhesive layer 65. That is, the tip side adhesive layer 36 is formed inward (right side in FIG. 4) from the end 65b of the second connection adhesive layer 65 on the inner side in the diaper width direction. And the second connection adhesive layer 65 are formed so as to be separated from each other in the X direction without having a portion overlapping each other.
  • the tip side adhesive layer 36, the second reinforcing adhesive layer 64, and the second connection adhesive layer 65 are spaced apart in the diaper width direction (the absence of the adhesive layer). ) So that they do not occur.
  • the tip side adhesive layer 36 and the second reinforcing adhesive layer 64 have a portion P4 that overlaps each other, and the second reinforcing adhesive layer 64 and the second connection adhesive layer 65 also overlap each other. have.
  • One sheet is interposed between two adhesive layers that overlap each other, one adhesive layer is bonded to one side of the sheet, and the other adhesive layer is bonded to the other side of the sheet. ing.
  • the distal-end-side adhesive layer 36, the second reinforcing adhesive layer 64, and the second connecting adhesive layer 65 are formed by shifting the center position in the width direction in the X direction.
  • these adhesive layers 36, 64, 65 are arranged so that the end portions 36b, 64b, 65b on the base end portion 3b side of the side panel 3 are the inner sides in the X direction, of both ends in the X direction. They are arranged in this order from the (right side in FIG. 4) to the outer side (left side in FIG. 4).
  • the front end side adhesive layer 36 and the second reinforcing adhesive layer 64 extend over the entire length in the Y direction of the fastening tape 4 in the above-described aspect (particularly the aspect shown in FIG. 4). In the same manner, it is more preferable that the side panel 3 extends over the entire length in the Y direction.
  • the second connecting adhesive layer 65 preferably extends in the above-described manner (particularly the embodiment shown in FIG. 4) over a length of 50% or more of the entire length of the fastening tape 4 in the Y direction. In the same manner, it is more preferable that the fastening tape 4 extends over the entire length in the Y direction.
  • the fastening tape 4 is pulled by hand and the side panel 3 is extended, and the fastening portion 41 of the fastening tape 4 is moved to the landing zone. Press to 5 and fasten.
  • the base end portion 3b of the side panel 3 is reinforced by the folding of the sheet 32 and the reinforcing adhesive layer 63, while the main body side adhesive layer 35 and the outer layer adhesive are used. Since the layer 61 is separated in the X direction, the base end portion 3b of the side panel 3 is compared to the case where all the layers from the sheet 31 to the outer nonwoven fabric 22b are joined at the same position in the X direction. In addition, it is possible to prevent an excessively hard portion from being generated in the vicinity thereof.
  • the significance that the adhesive layers separated in the X direction are the main body side adhesive layer 35 and the outer layer adhesive layer 61 is to improve the adhesive strength between the side panel 3 and the outer layer composite sheet 22 and to improve the appearance when bonded.
  • the location of the main body side adhesive layer 35 on the side panel 3 tends to become wrinkles due to the contraction of the elastic member 33.
  • the outer layer composite sheet 22 and the side of the side panel 3 having the ridges are joined, and the contact area is reduced and joined. Strength will fall.
  • the wrinkles of the side panel 3 also appear on the outer surface of the outer composite sheet due to the bonding.
  • the adhesive layers separated in the X direction are the main body side adhesive layer 35 and the outer layer adhesive layer 61, such a problem can be avoided.
  • a breathable sheet such as a nonwoven fabric for the sheets 31 and 32 and the like, it becomes easy to ensure good breathability in the vicinity of the joint portion between the side panel 3 and the absorbent main body 2.
  • the main body side adhesive layer 35, the reinforcing adhesive layer 63, the connecting adhesive layer 62, and the outer adhesive layer 61 are overlaid so that there is no gap between them, and the adhesive layer is in the X direction. Since it is substantially continuous, the side panel 3 and the absorbent main body 2 have a sufficient strength that is difficult to be damaged even if the side panel 3 is pulled in a portion from the main body side adhesive layer 35 to the outer layer adhesive layer 61. Can be secured.
  • tip part 3a of the side panel 3 is also reinforced by the return
  • the front end side adhesive layer 36, the second reinforcing adhesive layer 64, and the second connecting adhesive layer 65 are overlapped so that there is no gap between them, and the adhesive layer substantially extends in the X direction. Because it is continuous, the fastening tape 4 and the side panel 3 have sufficient strength to prevent damage to the fastening tape 4 from the second connecting adhesive layer 65 to the tip side adhesive layer 36 even if the fastening tape 4 is pulled. can do. In the diaper 1 of 1st Embodiment, since it has said structure, even if a strong tensile force is added to the fastening tape 4 or the side panel 3, tearing, tearing, etc. in the whole region ranging from the fastening tape 4 to the absorptive main body 2 etc. Damage is unlikely to occur.
  • an intermediate adhesive layer 37 is formed by providing a non-adhesive region 38 between adjacent adhesive layers, and the natural state of the diaper 1 2, the two sheets 31 and 32 in the non-bonding region 38 bulge away from the elastic member 33 due to the contraction of the elastic member 33, and straddle the plurality of elastic members 33 on both sides of the side panel 3.
  • a plurality of ridges (not shown) extending in this manner are formed. And the bag does not disappear completely even when the diaper is worn. Therefore, a portion hardened by the adhesive layers 36 to 37 in the side panel 3, particularly a portion hardened by the intermediate adhesive layer 37, does not easily hit the wearer's skin and does not give a sense of incongruity.
  • the adhesive layer 65 and the intermediate adhesive layer 37 are formed by applying an adhesive to one or both of the two sheets sandwiching each of them by various known methods, and then superimposing the two sheets. It can be formed by pressing.
  • the adhesive coating pattern for forming each adhesive layer is preferably a so-called solid coating using a spray gun, coater gun or the like as an adhesive coating machine, but a bead gun as an adhesive coating machine.
  • a spiral spray gun, an omega-shaped spray gun, a transfer roll, or the like pattern coating such as a linear shape, a spiral shape, an omega shape, or a dot shape can also be performed.
  • the elastic member 33 disposed on the side panel 3 has a width (dimension in the Y direction) and a diameter of preferably 0.1 mm or more from the viewpoint of improving the flexibility of the side panel 3 and ensuring stretchability.
  • the thickness is preferably 2 mm or less, more preferably 1 mm or less, and more specifically preferably 0.1 to 2 mm, and more preferably 0.1 to 1 mm.
  • the number of elastic members 33 arranged on the side panel 3 is preferably 4 or more, more preferably 10 or more, and preferably 30 or less, more preferably 20 or less, more Specifically, the number is preferably about 4 to 30, more preferably 10 to 20.
  • the width of the portion P3 where the main body side adhesive layer 35 and the reinforcing adhesive layer 63 overlap is preferably 2 mm or more, more preferably 4 mm or more. In addition, it is preferably 10 mm or less, and particularly preferably 4 to 10 mm. From the same viewpoint, the width of the portion P2 where the reinforcing adhesive layer 63 and the connecting adhesive layer 62 overlap is preferably 5 mm or more, more preferably 10 mm or more, and preferably 20 mm or less. In particular, the thickness is preferably 10 to 20 mm.
  • the width of the portion P1 where the connecting adhesive layer 62 and the outer adhesive layer 61 overlap is preferably 5 mm or more, more preferably 10 mm or more, and preferably 20 mm or less. It is preferably 10 to 20 mm.
  • the separation distance between the main body side adhesive layer 35 and the outer adhesive layer 61 is preferably 0.5 mm or more, more preferably 5 mm or more, and preferably 10 mm or less, particularly 5 to 10 mm.
  • the width of the reinforcing adhesive layer 63 is preferably 5 mm or more, more preferably 10 mm or more, and preferably 20 mm or less, particularly preferably 10 to 20 mm.
  • the width of the portion P4 where the tip side adhesive layer 36 and the second reinforcing adhesive layer 64 overlap is preferably 2 mm or more, more preferably 5 mm or more, and 10 mm or less. A thickness of 5 to 10 mm is particularly preferable.
  • the width of the portion P5 where the second reinforcing adhesive layer 64 and the second connecting adhesive layer 65 overlap is preferably 5 mm or more, more preferably 10 mm or more, and 15 mm or less. In particular, the thickness is preferably 10 to 15 mm.
  • the separation distance between the distal-end-side adhesive layer 36 and the second connecting adhesive layer 65 is preferably 0.5 mm or more, more preferably 5 mm or more, and preferably 10 mm or less, particularly 5 It is preferably ⁇ 10 mm.
  • the width of the second reinforcing adhesive layer 64 is preferably 5 mm or more, more preferably 10 mm or more, and preferably 20 mm or less, and particularly preferably 10 to 20 mm.
  • the separation distance from the two-connection adhesive layer 65 is a dimension or distance measured along the X direction.
  • the dimensions of these parts are the same as the dimensions when the elastic member such as the elastic member 33 is extended and the side panel and the diaper are spread out in a flat state without any influence of the elastic member. Measure in the expanded state.
  • the side panel 3 in the diaper 1 of 1st Embodiment also has the sheet
  • the main body side adhesive layer 35 and the surface side adhesive layer 66 are also spaced apart in the X direction.
  • the elastic member 33 is being fixed to the side panel 3 in the diaper 1 also in each of the main body side adhesive bond layer 35 and the front end side adhesive bond layer 36 in the expansion
  • the three-dimensional guard forming sheet 24 in the diaper 1 of the first embodiment is a two-layer structure in which one sheet is folded and laminated, and the layers are joined by thermal fusion.
  • the two-layer structure portion is joined to the side panel 3, more specifically, the sheet 31 on the inner surface side of the side panel 3 via the surface-side adhesive layer 66. Since the two-layer structure portion of the three-dimensional guard forming sheet 24 is bonded to the side panel 3, the bonding strength of the side panel 3 to the absorbent main body 2 is improved.
  • the three-dimensional guard forming sheet 24 in the diaper 1 of the first embodiment includes an outer two-layer structure portion bonded to the side panel 3 and an inner surface bonded to the surface sheet 21 via the adhesive layers 67 and 68.
  • the bonding strength of the side panel 3 to the absorbent main body 2 is further improved.
  • the two-layer structure portion joined to the side panel 3 is also joined to the outer composite sheet 22 via the connecting adhesive layer 62 as shown in FIG.
  • the diaper 1 of 1st Embodiment is one Embodiment of 2nd invention.
  • the solid guard forming sheet 24 in the diaper 1 forms the inner surfaces of both sides of the absorbent main body 2. Further, the three-dimensional guard forming sheet 24 is joined to both side portions of the topsheet 21 disposed on the inner surface side of the absorber 23.
  • the side panel 3 is preferably joined to a two-layer structure portion formed on such a three-dimensional guard forming sheet 24.
  • the seal pattern is preferably a dot pattern in which heat fusion parts are formed in the form of dots, but is not limited thereto.
  • the linear heat fusion part is 1 in the longitudinal direction of the diaper 1 or the like. It may be a linear pattern or a lattice pattern formed by a book or a plurality of books.
  • two or more kinds of seal patterns may be used in combination. For example, a seal pattern formed by an outer two-layer structure portion joined to the side panel 3 and an inner two-layer structure portion joined to the surface sheet 21. May be different.
  • the constituent material of the diaper 1 is demonstrated.
  • the sheets 31 and 32 constituting the side panel 3 and the tape base material 42 of the fastening tape 4 various sheet materials conventionally used for absorbent articles such as disposable diapers and sanitary napkins are used without particular limitation. be able to.
  • the sheets 31 and 32 and the tape base material 42 a nonwoven fabric, a woven fabric, a film, or a laminated sheet thereof can be used.
  • the surface sheet 21, the outer layer composite sheet 22, and the absorbent body 23 constituting the absorbent main body 2 those conventionally used for absorbent articles such as disposable diapers and sanitary napkins can be used without particular limitation. it can.
  • the surface sheet 21 a hydrophilic and liquid-permeable nonwoven fabric, a three-dimensional aperture film, or the like can be used.
  • the leak-proof sheet 22a is a liquid-impermeable or liquid-impervious (including water repellency) resin film
  • the outer layer nonwoven fabric 22b is a nonwoven fabric produced by various manufacturing methods (for example, an air-through nonwoven fabric or a spunbond nonwoven fabric). , Spunlace nonwoven fabric, needle punched nonwoven fabric, etc.).
  • the outer layer nonwoven fabric 22b may have a multilayer structure.
  • an aggregate of fibers such as pulp fibers (may be a non-woven fabric) or an absorbent core in which water-absorbing polymer particles are held by the absorbent core 23 is made of water-permeable thin paper or non-woven fabric. Those coated with a core wrap sheet can be used.
  • a film, a nonwoven fabric, a woven fabric, or a laminated sheet thereof can be used as the three-dimensional guard.
  • Examples of the elastic member 33, the elastic member 25 constituting the three-dimensional guard, and the leg elastic member 26 include natural rubber, polyurethane, polystyrene-polyisoprene copolymer, polystyrene-polybutadiene copolymer, polyethylene acrylate-ethylethylene, etc.
  • a thread-like or string-like elastic member made of an ⁇ -olefin copolymer or the like can be used. It is preferable from the viewpoints of manufacturing cost, simplification of the manufacturing process, and the like that the plurality of elastic members 33 arranged on one side panel are of the same type and arranged at the same elongation rate.
  • Preferred materials for the adhesive for bonding the members including the adhesive 34 for fixing the elastic member 33 include amorphous polyolefin, ethylene-vinyl acetate copolymer (EVA), ethylene-acrylate ester copolymer.
  • EVA ethylene-vinyl acetate copolymer
  • SBS styrene-butadiene-styrene block copolymer
  • SIS styrene-isoprene-styrene block copolymer
  • SEBS styrene-ethylene / Thermoplastic polymers such as propylene-styrene block copolymer (SEPS) and mixtures thereof.
  • the adhesive is preferably a hot melt type.
  • disposable diapers according to second to fourth embodiments of the present invention will be described.
  • the disposable diapers of the second to fourth embodiments are different from the first embodiment in the configuration of the side panel and the manner of joining the side panel with the absorbent main body and the fastening tape.
  • differences from the first embodiment will be mainly described, and the same points will be denoted by the same reference numerals and description thereof will be omitted.
  • the description relating to the first embodiment is applied as appropriate.
  • the side panel 3 ⁇ / b> A includes a reinforcing adhesive layer 63 ⁇ / b> A in which the end 3 b (base end 3 b) on the absorbent main body 2 side is continuous with the main body-side adhesive layer 35. It is reinforced using. More specifically, as shown in FIG. 5, of the two sheets 31 and 32 constituting the side panel 3, the sheet 32 positioned on the outer surface side (Q side in FIG. 5) of the side panel 3 is The base end portion 3b of the side panel 3 is folded back to the inner surface side (P side in FIG. 5) of the sheet 32, and the folded portion is formed on the inner surface of the sheet 32 via the reinforcing adhesive layer 63A. It is joined.
  • the sheet 31 positioned on the inner surface side (P side in FIG. 5) of the side panel 3 is not folded back on the outer surface side or the inner surface side of the sheet 31. Further, no adhesive is disposed between the folded portion of the sheet 32 and the sheet 31. Since the base end portion 3b of the side panel 3A is reinforced by such a configuration, the base panel 3A has a reasonably high rigidity and has a sufficient strength that is not easily damaged by a tensile force in the X direction. In the side panel 3 ⁇ / b> A, the base end portion 3 b reinforced in this way is joined to the leakage preventing sheet 22 a of the outer composite sheet 22 by the connecting adhesive layer 62.
  • the main body side adhesive layer 35 is formed to be spaced outward from the outer layer adhesive layer 61 in the width direction (X direction) of the diaper. . That is, the main body side adhesive layer 35 is formed outward (left side in FIG. 5) from the end 61a of the outer layer adhesive layer 61 on the outer side in the diaper width direction, and is bonded to the main body side adhesive layer 35.
  • the agent layer 61 is formed so as to be separated in the X direction so as not to overlap with each other.
  • the main body side adhesive layer 35, the reinforcing adhesive layer 63A, the connection adhesive layer 62, and the outer adhesive layer 61 are spaced apart in the diaper width direction (non-adhesive layer). (Existing part) is not generated. More specifically, the main body side adhesive layer 35 and the reinforcing adhesive layer 63A are continuous or in close contact with each other, and the reinforcing adhesive layer 63A and the connecting adhesive layer 62 are mutually connected.
  • the connecting adhesive layer 62 and the outer adhesive layer 61 also have a portion P1 that overlaps each other.
  • One sheet is interposed between the reinforcing adhesive layer 63A and the connecting adhesive layer 62, and between the connecting adhesive layer 62 and the outer adhesive layer 61, respectively.
  • One of the two adjacent adhesive layers is bonded to one side of the sheet, and the other is bonded to the other side of the sheet.
  • the main body side adhesive layer 35, the reinforcing adhesive layer 63A, the connecting adhesive layer 62, and the outer layer adhesive layer 61 have end portions 35a, 63a, 62a, 61a on the front end portion 3a side of the side panel 3, They are arranged in this order from the outer side in X direction (left side in FIG. 5) to the inner side (right side in FIG. 5).
  • the main body side adhesive layer 35, the reinforcing adhesive layer 63, the connecting adhesive layer 62, and the outer adhesive layer 61 are formed in the above-described manner (particularly, the embodiment shown in FIG. 5) in the entire length of the fastening tape 4 in the Y direction. It is preferable to extend over the entire length, and in the same manner, it is more preferable to extend over the entire length of the side panel 3 in the Y direction.
  • the side panel 3 ⁇ / b> A in the second embodiment is also reinforced by using a second reinforcing adhesive layer 64 ⁇ / b> A that is continuous with the front end side adhesive layer 36.
  • a second reinforcing adhesive layer 64 ⁇ / b> A that is continuous with the front end side adhesive layer 36. More specifically, as shown in FIG. 5, of the two sheets 31 and 32 constituting the side panel 3A, the sheet 32 positioned on the outer surface side (Q side in FIG. 5) of the side panel 3, The front end 3a of the side panel 3A is folded back to the inner surface side (P side in FIG. 5) of the sheet 32, and the folded portion is the inner surface of the sheet 32 via the second reinforcing adhesive layer 64A. It is joined to.
  • the side panel 3 ⁇ / b> A is not folded back on the outer surface side or the inner surface side of the sheet 31. Since the front end portion 3a of the side panel 3A is reinforced by such a configuration, it has a reasonably high rigidity and a sufficient strength that is not easily damaged by the tensile force in the X direction. In the side panel 3 ⁇ / b> A, the tip portion 3 a reinforced in this manner is joined to the fastening tape 4 by the second connecting adhesive layer 65.
  • the distal-end-side adhesive layer 36 is formed so as to be spaced inward from the second connection adhesive layer 65. That is, the front end side adhesive layer 36 is formed inward (right side in FIG. 5) from the end 65b of the second connecting adhesive layer 65 on the inner side in the diaper width direction. And the second connecting adhesive layer 65 are formed so as to be separated from each other in the X direction so as not to overlap each other. Further, in the diaper width direction (X direction), the tip side adhesive layer 36, the second reinforcing adhesive layer 64A, and the second connection adhesive layer 65 are spaced in the diaper width direction (the absence of the adhesive layer). ) Is not generated.
  • the front end side adhesive layer 36 and the second reinforcing adhesive layer 64A are continuous or in close contact with each other, and the second reinforcing adhesive layer 64A and the second connecting adhesive layer 64A are connected.
  • the adhesive layer 65 also has a portion P5 that overlaps each other.
  • One sheet is interposed between two adhesive layers that overlap each other.
  • One sheet is interposed between the second reinforcing adhesive layer 64A and the second connection adhesive layer 65, and one of the two adhesive layers is on one side of the sheet. The other side is bonded to the other surface of the sheet.
  • the distal-end-side adhesive layer 36, the second reinforcing adhesive layer 64A, and the second connecting adhesive layer 65 are also formed by shifting the center position in the width direction in the X direction.
  • these adhesive layers 36, 64A, 65 are such that the end portions 36b, 64b, 65b on the base end portion 3b side of the side panel 3 are arranged from the inner side in the X direction (the right side in FIG. 4) to the outer side ( The left side in FIG. 4 is arranged in this order.
  • the tip side adhesive layer 36 and the second reinforcing adhesive layer 64A preferably extend over the entire length in the Y direction of the fastening tape 4 in the above-described mode (in particular, the mode shown in FIG. 5). In the same manner, it is more preferable that the side panel 3 extends over the entire length in the Y direction.
  • the second connecting adhesive layer 65 preferably extends in the above-described manner (particularly the embodiment shown in FIG. 5) over a length of 50% or more of the entire length of the fastening tape 4 in the Y direction. In the same manner, it is more preferable that the fastening tape 4 extends over the entire length in the Y direction. According to the diaper of 2nd Embodiment, the effect similar to 1st Embodiment is show
  • the sheet 32 is folded back to the inner surface side, compared to the diaper of the first embodiment, the sheet 32 is caused by the action force when operating the fastening tape 4 or the user's finger or the like being caught on the front end 3a side of the side panel 3. There is no fear of peeling of the folded portion (peeling of the reinforcing adhesive layer).
  • the sheet 31 positioned at the side is folded back to the outer surface side (Q side in FIG. 6) of the sheet 32 at each of the base end portion 3b and the tip end portion 3a of the side panel 3B, and the folded portion is reinforced.
  • the sheet 32 is bonded to the outer surface of the sheet 32 via the adhesive layer 63 and the second reinforcing adhesive layer 64.
  • tip part 3a of the side panel 3B reinforced in this way are connected with the outer-layer composite sheet 22 and the fastening tape 4 via the connection adhesive layer 62 and the second connection adhesive layer 65. Are joined.
  • the main body side adhesive layer 35 in the width direction (X direction) of the diaper, is formed to be spaced outward from the outer layer adhesive layer 61, and the diaper width direction (X direction). ),
  • the main body side adhesive layer 35, the reinforcing adhesive layer 63, the connecting adhesive layer 62, and the outer adhesive layer 61 do not have a gap (the absence of the adhesive layer) in the diaper width direction. They are overlapping.
  • the distal-end-side adhesive layer 36 is formed inwardly spaced from the second connecting adhesive layer 65 in the width direction (X direction) of the diaper.
  • the front end side adhesive layer 36, the second reinforcing adhesive layer 64, and the second connection adhesive layer 65 have a gap (the absence of the adhesive layer) in the diaper width direction. There is no overlap. Therefore, according to the diaper of 3rd Embodiment, the effect similar to 1st Embodiment is show
  • the two sheets 31 and 32 constituting the side panel 3C are either at the base end portion 3b or the front end portion 3a of the side panel 3C. Also not folded. Instead, the reinforcing adhesive layer 63 ⁇ / b> C and the second reinforcing adhesive layer 64 ⁇ / b> C are formed using an adhesive having a weak adhesive strength that cannot fix the elastic member 33 in the extended state.
  • the adhesive constituting the reinforcing adhesive layer 63 ⁇ / b> C and the second reinforcing adhesive layer 64 ⁇ / b> C is bonded to the sheet 32, but is preferably bonded to the sheet 31.
  • the base end portion 3b and the front end portion 3a of the side panel 3C are reinforced by the adhesive layers 63C and 64C.
  • the adhesive constituting the reinforcing adhesive layer 63C and the second reinforcing adhesive layer 64C is preferably applied to the sheet 32 with a basis weight of 10 g / m 2 or less.
  • the main body side adhesive layer 35 and the front end side adhesive layer 36 are formed using an adhesive having a relatively strong adhesive force capable of fixing the elastic member 33 in an expanded state. In each of the front end side adhesive layers 36, the sheets 31, 32 are joined together, and the elastic member 33 is fixed between the sheets 31, 32 in an extended state.
  • the type, coating pattern, or coating amount (basis weight) of the adhesive constituting the reinforcing adhesive layer 63C. is different from the adhesive constituting the main body side adhesive layer 35, it is easy to distinguish the reinforcing adhesive layer 63C from the main body side adhesive layer 35.
  • the adhesive constituting the reinforcing adhesive layer 63C has an adhesive force with respect to the sheet on the side opposite to the sheet directly coated with the adhesive of the adhesive constituting the main body side adhesive layer 35 with respect to the same sheet. Make it weak.
  • the type of adhesive, the coating pattern, or the like constituting the second reinforcing adhesive layer 64C If the application amount (basis weight) or the like is different from the adhesive composing the tip side adhesive layer 36, it is easy to distinguish between the second reinforcing adhesive layer 64C and the main body side adhesive layer 35.
  • the adhesive constituting the second reinforcing adhesive layer 64C is such that the adhesive force to the sheet opposite to the sheet directly coated with the adhesive is the adhesive force of the adhesive constituting the tip side adhesive layer 36 to the same sheet. To be weaker than
  • these adhesive layers are adhesives applied to the sheet 32 side. May also be formed by bonding to the sheet 31, or may be formed by bonding the adhesive applied to the sheet 31 side to the sheet 32.
  • the main body side adhesive layer 35 is formed to be spaced outward from the outer layer adhesive layer 61, and the diaper width direction (X direction). ), The main body side adhesive layer 35, the reinforcing adhesive layer 63C, the connecting adhesive layer 62, and the outer adhesive layer 61 are arranged so that no gap (an absence of the adhesive layer) is generated in the diaper width direction. Is provided.
  • the distal-end-side adhesive layer 36 is formed inwardly spaced from the second connecting adhesive layer 65 in the width direction (X direction) of the diaper, and the diaper In the width direction (X direction), the front end side adhesive layer 36, the second reinforcing adhesive layer 64C, and the second connecting adhesive layer 65 have a gap (the absence of the adhesive layer) in the diaper width direction. There is no overlap. Therefore, according to the diaper of 4th Embodiment, the effect similar to 1st and / or 2nd Embodiment is show
  • seat 32 is not return
  • the bonding strength is increased.
  • the disposable diaper and side panel of the present invention are not limited in its production method and can be produced by any method.
  • a preferred example of the method for manufacturing the side panel in the disposable diaper of the present invention will be described by taking as an example the case of manufacturing the side panels 3, 3A to 3C in the diapers of the first to fourth embodiments.
  • the stretchable sheet manufacturing apparatus 7 shown in FIG. 8 has a pair of yarns arranged in parallel at a predetermined interval.
  • An elastic member is wound around the conveying longitudinal structures 71, 71 and a pair of the yarn conveying longitudinal structures, and the direction of the elastic member intersects with the longitudinal direction of the yarn conveying longitudinal structure (R direction in the figure).
  • a pair of belt-like sheets 31 ′ and 32 ′ is formed by an elastic body winding means 72 having a direction to be wound and the elastic member 33 wound around the elastic body winding means 72 and conveyed by the longitudinal structure for yarn conveyance.
  • integration means 73 for integrating them with each other.
  • the longitudinal structure 71 for yarn conveyance has a forward running portion that moves in the R direction and a reverse feeding portion that moves in the opposite direction to the R direction, and only the forward running portion engages with the elastic member 33 to
  • An endless belt that conveys the elastic member 33 in the R direction is preferably used.
  • the endless belt is stretched over a pulley or gear, and is driven by rotating the pulley or gear.
  • the individual thread conveying longitudinal structure 71 only one such endless belt can be used, but as shown in FIG. 8 and FIG. 9, as the individual thread conveying longitudinal structure 71, It is preferable to use such an endless belt arranged in two upper and lower stages.
  • the elastic member 33 is spaced in the R direction in the direction of the elastic member 33 that was zigzag in plan view when wound around the pair of longitudinal structures 71 for yarn conveyance. Can be fixed between a pair of belt-like sheets 31 ′ and 32 ′ after being corrected to a state in which many are oriented in parallel.
  • a round bar-like body having grooves and ridges spirally formed on the peripheral surface thereof and driven to rotate around the central axis can also be used.
  • a reinforcing adhesive layer 63 and a second reinforcing adhesive layer 64 are formed on a belt-like sheet 32 ′ that is a raw sheet of the sheet 32.
  • Adhesives 63 ′ and 64 ′ are continuously applied in a strip shape by a known adhesive coating machine 75, and then both sides of the strip sheet 32 ′ are covered so as to cover both the adhesives 63 ′ and 64 ′.
  • the part is folded back to the surface not facing the belt-like sheet 31 ′ by a sailor guide (not shown) or the like.
  • an adhesive 34 for forming the main body side adhesive layer 35, the tip side adhesive layer 36 and the intermediate adhesive layer 37 is applied to the belt-like sheet 31 ′ which is the raw sheet of the sheet 31.
  • Each of the machines 76 is continuously applied in a strip shape.
  • the adhesive 34 may be continuously applied to the belt-like sheet 32 ′. Then, the belt-like sheets 31 ′ and 32 ′ after the adhesive application are merged so that the elastic member 33 in an extended state is sandwiched between them, and the pair of nip rolls 74 as the integration means 73 are used to join them. Apply pressure from above and below to integrate.
  • the elastic sheet 3 ' is obtained by cut
  • the manufacturing method of the disposable diaper of this invention it is a conventionally well-known method except using continuous web 3 'of the elastic sheet of the structure which said side panel 3 or this side panel 3 continued in the longitudinal direction (Y direction). According to this, disposable diapers can be manufactured.
  • a preferable manufacturing method for manufacturing the disposable diaper 1 of the first embodiment using the continuous web 3 ′ of the stretchable sheet having a configuration in which the side panels 3 are connected includes the following steps (I) to (VI). .
  • the cut fastening tape 4 is fixed to the continuous web 3 ′ of the stretchable sheet via the adhesive. Before the continuous web of the fastening tape 4 is cut, it is preferable that the continuous body of the fastening portions 41 is fixed along the longitudinal direction thereof.
  • the surface sheet composite continuous body is obtained by integrating the continuous web of the web solid guard forming sheet and the continuous web of the surface sheet.
  • the continuous web of the web three-dimensional guard forming sheet and the continuous web of the top sheet are integrated through the adhesive layers 67 and 68.
  • the side panel 3 with the fastening tape obtained by cutting the continuous web 3 ′ of the elastic sheet is attached to the continuous web of the outer layer composite sheet or the surface sheet composite continuous body.
  • the continuous web of the outer layer composite sheet 22 it is attached via the adhesive layer 62, and when attaching the side panel 3 to the surface sheet composite continuous body, via the surface side adhesive layer 66. Install.
  • step (V) A step of integrating the continuous web of the outer layer composite sheet 22 and the surface sheet composite continuous body by sandwiching the absorber 23 therebetween.
  • step (IV) when the side panel 3 with the fastening tape is attached to the continuous web of the outer layer composite sheet, an absorbent body is disposed on one side of the continuous web, and the surface sheet composite continuous body is Overlay the other side of the absorber.
  • the continuous web of an outer layer composite sheet and a surface sheet composite continuous body are joined by arbitrary methods, such as an adhesive agent, heat sealing, and ultrasonic sealing.
  • step (IV) when the side panel 3 with the fastening tape is attached to the surface sheet composite continuous body, an absorber is disposed on one side of the surface sheet composite continuous body, The continuous web is overlaid so as to cover the opposite surface of the absorbent body. And the continuous web of an outer layer composite sheet and a surface sheet composite continuous body are joined by arbitrary methods, such as an adhesive agent, heat sealing, and ultrasonic sealing.
  • step (VI) A step of cutting the obtained diaper continuous body into individual disposable diapers.
  • the side panel 3 or the elastic sheet 3 ′ having a configuration in which the side panel 3 is continuous in the longitudinal direction is used to efficiently remove the diaper by the following procedures (1) to (9). It can be manufactured.
  • (1) The continuous web of the fastening tape 4 coated with the adhesive for forming the second connection adhesive layer 65 is cut, and the continuous web of the elastic sheet 3 ′ obtained as described above is cut. Install intermittently.
  • (2) The fastening tape 4 is folded and temporarily fixed to the stretchable sheet 3 ′ via the fixing portion 41.
  • An adhesive (for main body connection) for forming the connection adhesive layer 62 is continuously applied to the stretchable sheet 3 '.
  • the continuous web of the three-dimensional guard forming sheet 24 and the continuous web of the topsheet 21 are integrated to form a topsheet composite continuous body that forms the skin contact surface of the absorbent main body. .
  • the continuous web of the leak-proof sheet 22a and the continuous web of the outer layer nonwoven fabric 22b are integrated to form a continuous body of the outer layer composite sheet 22.
  • the stretchable sheet 3 ′ is intermittently cut and attached to the topsheet 21 (and / or the three-dimensional guard) or the outer composite sheet 22.
  • the absorbent body 23 is sandwiched between the top sheet 21 and the outer composite sheet 22 and integrated.
  • the stretchable sheet manufacturing apparatus 7 shown in FIG. 9 is the same as the stretchable sheet manufacturing apparatus 7 shown in FIG. And a pair of longitudinal structures 71, 71, elastic body winding means 72, integration means 73, cutting means 77, and the like having the structure described above.
  • the reinforcing adhesive layer 63A and the second reinforcing adhesive layer 64A are formed on the belt-like sheet 32 ′ that is the raw sheet of the sheet 32.
  • Adhesives 63A ′ and 64A ′ for coating are continuously applied in a strip shape by a known adhesive coating machine 75, respectively, and then the whole or at least a part of the width direction of both the adhesives 63A ′ and 64A ′.
  • both side portions of the belt-like sheet 32 ′ are folded back to the surface facing the belt-like sheet 31 ′ by a sailor guide (not shown).
  • the adhesives 63A ′ and 64A ′ are folded back so as to be slightly exposed from the edge of the folded portion.
  • the adhesive is so positioned that the adhesive 34 for forming the main body side adhesive layer 35, the front end side adhesive layer 36 and the intermediate adhesive layer 37 is located between the folded portions of the belt-like sheet 32 ′.
  • 34 is continuously applied to the belt-like sheet 31 ′ or the belt-like sheet 32 ′ by the adhesive coating machine 76 in a band shape.
  • a part of the adhesive forming the main body side adhesive layer 35 overlaps the adhesive 63A ′ exposed from the edge of the folded portion, and the adhesive exposed from the edge of the folded portion. It is preferable to apply such that a part of the adhesive forming the front end side adhesive layer 36 overlaps the agent 64A ′.
  • the belt-like sheets 31 ′ and 32 ′ after the application of the adhesive 34 are joined together so that the elastic member 33 in an expanded state is sandwiched between them, and a pair of nip rolls 74 as the integration means 73 are used.
  • elastic sheet 3A ' is obtained by cut
  • the obtained elastic sheet 3A ′ is sequentially cut to the length of each side panel by an arbitrary cutting means. In this way, the side panel 3A of the second embodiment can be efficiently and continuously produced.
  • a preferable manufacturing method of the side panel 3B of the third embodiment will be described with reference to FIG. 8 while clarifying differences from the manufacturing method of the side panel 3 of the first embodiment described above.
  • a sheet that is wider than the belt-like sheet 32 ′ that is the raw sheet of the sheet 32 is used as the belt-like sheet 31 ′ that is the raw sheet of the sheet 31 .
  • An adhesive 34 for forming the side adhesive layer 35, the tip side adhesive layer 36, and the intermediate adhesive layer 37 is continuously applied in a band shape.
  • the belt-like sheet 31 ′ and the belt-like sheet 32 ′ which is not coated with the adhesives 63 ′ and 64 ′ and folded back on both sides are joined together so that the elastic member 33 in the stretched state is sandwiched therebetween.
  • the pair of nip rolls 74 as the integration means 73 are pressed and integrated from above and below.
  • the elastic member 33 extended to the side is cut
  • adhesives 63 ′ and 64 ′ for forming the reinforcing adhesive layer 63 and the second reinforcing adhesive layer 64 are formed on both side portions of the belt-like sheet 31 ′ extending from both side edges of the belt-like sheet 32 ′.
  • the belt is continuously coated, and both sides thereof are folded back and pressed onto a surface of the belt-like sheet 32 ′ that does not face the belt-like sheet 31 ′ by a sailor guide (not shown) or the like. And the obtained elastic sheet
  • the adhesive 34 may be applied to the belt-like sheet 32 ′ instead of the belt-like sheet 31 ′ with an adhesive for forming all or part of the adhesive layer. Also, the adhesives 63 ′ and 64 ′ may be applied to a portion of the belt-like sheet 32 ′ that overlaps both side portions of the belt-like sheet 31 ′ instead of the belt-like sheet 31 ′.
  • the strip-shaped sheet 31 ′ and the strip-shaped sheet 32 ′ having substantially the same width are used.
  • adhesive strips 63 ′ and 64 ′ for forming the reinforcing adhesive layer 63C and the second reinforcing adhesive layer 64C are continuously applied in a strip shape to the strip sheet 32 ′, while the strip sheet 31 ′.
  • the adhesive 34 for forming the main body side adhesive layer 35, the tip side adhesive layer 36, and the intermediate adhesive layer 37 is continuously applied in a band shape.
  • the belt-like sheets 31 ′ and 32 ′ after application of the adhesive are joined together so that the elastic member 33 in an expanded state is sandwiched between them, and a pair of nip rolls 74 as the integration means 73 are used to join them.
  • the elastic member 33 extended to the side is cut
  • seat is cut
  • the adhesives 63 ′ and 64 ′ are applied to the belt-like sheet 31 ′. It is also possible to apply the adhesive 34 to the belt-like sheet 32 ′. In order to prevent the reinforcing adhesive layer 63C and the second reinforcing adhesive layer 64C from being joined to the belt-like sheet 31 'or 32' to which the adhesives 63 'and 64' are not directly applied, the adhesive 63 ' , 64 ′ is applied earlier than the application of the adhesive 34, or after the adhesive 63 ′, 64 ′ is applied to one of the belt-like sheets, the adhesive is cooled by cooling means. It is preferable to stack the other belt-like sheet after solidifying.
  • the disposable diaper manufacturing method of the present invention may be a method of manufacturing a disposable diaper using the side panels 3A to 3C obtained as described above, and in that case, in addition to using the side panels 3A to 3C.
  • Patent Document 1 As an apparatus for sandwiching and fixing an elastic member between a pair of belt-like sheets, the apparatus shown in FIGS. 11 and 12 of Patent Document 1 can also be used.
  • the fastening tape 4 is a tape base material made of a non-woven fabric or the like, instead of a tape base material made of a non-woven fabric or the like and a male surface fastener of a mechanical hook-and-loop fastener affixed by heat fusion or an adhesive.
  • the adhesive part may be apply
  • the landing zone for fastening the fastening portion 41 made of the male member of the mechanical surface fastener may be formed by joining the female member of the mechanical surface fastener to the outer surface of the outer layer composite sheet 22, or the outer layer.
  • the outer surface of the composite sheet 22 may be composed of a non-woven fabric with high engagement properties, and the predetermined area may be used as a landing zone. Further, the fastening tape 4 may be fixed to a pair of ventral panels 8 and 8 provided on both sides of the absorbent main body 2 in the ventral side A as in the disposable diaper 1A shown in FIG. good.
  • a material for forming the ventral panel 8 a nonwoven fabric, a woven fabric, a film, or a laminated sheet thereof can be used.
  • FIG. 4 etc. showed the example which joined the tape base material 42 of the fastening tape 4 to the outer surface (surface which is not the sheet 31 side) side of the sheet
  • the sheet 31 may be bonded to the inner surface (the surface not the sheet 32 side) side by an adhesive, or may be bonded to the opposite surfaces of the sheets 31 and / or 32 by an adhesive.
  • the disposable diaper may not have a three-dimensional guard, and the side panels 3 and 3A to 3C are bonded and fixed to the top sheet 21 and the outer composite sheet 22 on both sides of the absorbent main body 2. May be.
  • the elastic member 33 is preferably generally disposed along the width direction of the diaper.
  • the elastic member 33 may be disposed in parallel to a straight line perpendicular to the central line CL in the diaper longitudinal direction, It may be arranged to form an angle of 30% or less.
  • the elastic member 33 may be formed in a zigzag.
  • a side non-adhesion region is formed, and a main body side non-adhesion region in which the sheets 31 and 32 are not bonded with an adhesive is formed on the side panel 3 on the center line CL side of the main body side adhesive layer 35 As shown in FIG. 12, such a tip side non-adhesion region and / or a main body side non-adhesion region may not be formed.
  • the side panels 3, 3A to 3C having the fastening tape 4 may be formed only on either one of the left and right sides in the longitudinal direction of the absorbent main body 2.
  • the intermediate region 30 may be composed of the non-adhesive region 38 throughout.
  • the sheets 31 and 32 do not overlap the elastic member 33. You may provide many heat-fusion parts heat-sealed in the site
  • the sheet 31 or the sheet 32 constituting the side panel 3 is folded and joined to the reinforcing adhesive layer 63 (second reinforcing adhesive layer 64).
  • the sheets of different materials may be stacked without being folded and joined to the reinforcing adhesive layer 63 (second reinforcing adhesive layer 64).
  • FIG. 13 is an enlarged plan view of the side panel and the vicinity thereof showing a preferred joining mode of the side panel 3 and the absorbent main body 2 in the present invention.
  • the three-dimensional guard forming sheet 24 is formed by folding a single sheet so that the layers are joined together by heat sealing.
  • the two-layer structure portions 24a and 24b are provided. More specifically, it has an outer two-layer structure portion 24a bonded to the side panel 3, and an inner two-layer structure portion 24b bonded to the surface sheet 21 so as to overlap the side portion of the surface sheet 21. ing. As shown in FIG.
  • the outer two-layer structure portion 24a is joined to each other by a large number of heat-sealed portions 27 arranged in a scattered manner, and the inner two-layer structure portion 24b is also formed in a scattered shape.
  • the layers are joined together by a large number of heat-sealed portions 27 arranged on the surface.
  • a strip-shaped bonding region 28a (hereinafter referred to as the outer bonding region 28a) extending in the longitudinal direction of the diaper is formed by a large number of heat fusion portions 27.
  • the outer joining region 28a has a length in the longitudinal direction of the diaper from the viewpoint of sufficiently increasing the fixing strength of the side panel 3 to the absorbent main body 2 and preventing damage near the base of the side panel 3. It is preferable that it extends over the entire length, and it is more preferable that it extends back and forth from the portion overlapping the side panel 3.
  • the outer bonding area 28a may extend over the entire length of the diaper.
  • the heat fusion part 27 is located in the vicinity of the elastic member 25 for forming the three-dimensional guard of the three-dimensional guard forming sheet 24 or in the portion where the elastic members 26 for leg gather formation such as the crotch part C are arranged. It is preferable to avoid the elastic member.
  • each heat fusion portion 27 in the outer bonding region 28a is formed in a staggered arrangement in a staggered manner, and the area of each heat fusion portion 27 is preferably 0.5 mm 2 or more for the lower limit. , more preferably 1.5 mm 2 or more, the upper limit is preferably 10 mm 2 or less, more preferably 5 mm 2 or less. Further, in the outer bonding region 28a, the distance between the center points of the heat fusion part 27 is preferably 5 mm or less, more preferably 3 mm or less, and the lower limit is a distance where the heat fusion parts 27 are in contact with each other.
  • the area ratio of the heat-sealed portion 27 is preferably 2% or more for the lower limit, more preferably 5% or more, and 15% or less for the upper limit. Is more preferable, and more preferably 10% or less.
  • the area ratio (%) of the heat fusion part 27 is a ratio (%) of the total area of the heat fusion part 27 to the total area of the outer bonding region 28a.
  • the total area of the outer bonding region 28a is the area of the region where the heat-sealed portions 27 are distributed in the same pattern, and is the total area including the heat-fused portion 27 and other portions.
  • the fixing strength of the side panel 3 to the absorptive main body 2 is obtained by joining the outer panel 28a and the side panel 3 having a configuration in which the rigidity and strength of the three-dimensional guard forming sheet 24 are increased by the heat fusion part 27. Can be easily increased, and damage near the base of the side panel 3 is prevented.
  • an adhesive such as a hot-melt adhesive, but heat sealing, ultrasonic sealing, high frequency sealing, or the like can also be used.
  • the joint portion between the outer joining region 28a and the side panel 3 also preferably extends over the entire length of the side panel 3, and more preferably extends from the side panel 3 to the front and rear thereof.
  • a strip-shaped bonding region 28b (hereinafter referred to as an inner bonding region 28b) extending in the longitudinal direction of the diaper is formed by a large number of heat fusion portions 27.
  • the inner joining region 28b has a length in the longitudinal direction of the diaper over the entire length of the side panel 3 from the viewpoint of allowing the solid guard forming sheet 24 to receive the force evenly when the side panel 3 is pulled. It is preferable that it extends forward and backward from a portion overlapping the side panel 3.
  • the inner joint region 28b may also extend over the entire length of the diaper.
  • the preferable size and arrangement of the heat-sealed portion 27 in the outer joint region 28a are the same for the heat-fused portion 27 in the inner joint region 28b.
  • the side panel 3 in the second invention may not have the end 3b on the absorbent main body side reinforced. .
  • the side panel 3 in 2nd invention there is no restriction
  • the main body side adhesive layer 35 and the outer layer adhesive layer 61 of the side panel 3 may overlap each other in the diaper width direction (X direction), or the main body side adhesive layer 35 and the reinforcing layer may be reinforced.
  • the adhesive layer 63 may be spaced apart in the diaper width direction. Further, the connecting adhesive layer 62 and the outer adhesive layer 61 may be separated from each other in the diaper width direction.
  • a disposable body comprising an absorbent body including an absorbent body and an outer composite sheet disposed on the outer surface side of the absorbent body, and a stretchable side panel attached to one or both sides of the absorbent body.
  • a diaper The side panel has two sheets and an elastic member fixed between the two sheets, and a fastening tape is provided at a tip portion.
  • the outer layer composite sheet has a liquid-impervious or liquid-impervious leak-proof sheet and an outer-layer nonwoven fabric bonded to the outer surface side of the leak-proof sheet via an outer adhesive layer
  • the side panel fixes a body-side adhesive layer fixing the end of the elastic member on the side of the absorbent main body or the vicinity thereof, and an end of the elastic member on the side of the tip of the side panel or the vicinity thereof.
  • An end of the side panel on the side of the absorbent main body that is reinforced with a reinforcing adhesive layer that overlaps or is continuous with the main body side adhesive layer.
  • the end portion is joined to the outer composite sheet by a connecting adhesive layer,
  • the main body side adhesive layer is formed to be spaced outward from the outer layer adhesive layer, and the main body side adhesive layer, the reinforcing adhesive layer, and the connection adhesive layer
  • the said outer layer adhesive bond layer is a disposable diaper provided so that a clearance gap may not arise in the diaper width direction.
  • the main body side adhesive layer, the reinforcing adhesive layer, the connection adhesive layer, and the outer layer adhesive layer are formed by shifting the respective center positions in the width direction in the diaper width direction (X direction).
  • the main body side adhesive layer, the reinforcing adhesive layer, the connection adhesive layer, and the outer layer adhesive layer have end portions 35a, 63a, 62a, 61a on the front end side of the side panel, ⁇ 1> or ⁇ 2> described above, arranged in this order from the outer side (left side in FIG. 4) to the inner side (right side in FIG. 4) in the diaper width direction (X direction) Disposable diapers.
  • the main body side adhesive layer, the reinforcing adhesive layer, the connection adhesive layer and the outer adhesive layer are defined in any one of the above ⁇ 1> to ⁇ 3>, Any one of the above items ⁇ 1> to ⁇ 3>, which extends over the entire length of the fastening tape in the longitudinal direction (Y direction) of the diaper, preferably over the entire length of the side panel in the same direction (Y direction). Disposable diapers.
  • the width of the portion P3 where the main body side adhesive layer and the reinforcing adhesive layer overlap is 2 mm or more, preferably 4 to 10 mm
  • the width of the portion P2 where the reinforcing adhesive layer and the connecting adhesive layer overlap in the width direction of the diaper is 5 mm or more, preferably 10 to 20 mm
  • ⁇ 7> Any of the above ⁇ 1> to ⁇ 6>, wherein the width of the portion P1 where the connecting adhesive layer and the outer adhesive layer overlap in the width direction of the diaper is 5 mm or more, preferably 10 to 20 mm
  • ⁇ 8> Any one of the above items ⁇ 1> to ⁇ 7>, wherein in the width direction of the diaper, the separation distance between the main body side adhesive layer and the outer layer adhesive layer is 0.5 mm or more, preferably 5 to 10 mm. Disposable diapers described in 1.
  • the distal end portion of the side panel is reinforced with a second reinforcing adhesive layer that overlaps or is continuous with the distal adhesive layer, and the reinforced distal end portion is the second connecting adhesive layer.
  • the tip side adhesive layer, the second reinforcing adhesive layer, and the second connection adhesive layer are formed by shifting the respective center positions in the width direction in the diaper width direction (X direction), The disposable diaper of ⁇ 9> or ⁇ 10> description.
  • the distal end side adhesive layer, the second reinforcing adhesive layer, and the second connection adhesive layer have end portions 36b, 64b, 65b on the base end side (absorbent main body side) of the side panel.
  • ⁇ 9> to ⁇ 11> arranged in this order from the inner side (right side in FIG. 4) to the outer side (left side in FIG. 4) in the diaper width direction (X direction).
  • the disposable diaper according to any one of the above.
  • the front-end-side adhesive layer and the second reinforcing adhesive layer are defined in any one of the above ⁇ 9> to ⁇ 12>, and the overall length of the fastening tape in the longitudinal direction (Y direction) of the diaper
  • the disposable diaper according to any one of ⁇ 9> to ⁇ 12>, preferably extending over the entire length of the side panel in the same direction (Y direction).
  • the width of the portion P4 where the tip side adhesive layer and the second reinforcing adhesive layer overlap is 2 mm or more, preferably 5 to 10 mm, ⁇ 9> to ⁇ 13>
  • the width of the portion P5 where the second reinforcing adhesive layer and the second connecting adhesive layer overlap is 5 mm or more, preferably 10 to 15 mm.
  • the separation distance between the distal-end-side adhesive layer and the second connection adhesive layer is 0.5 mm or more, preferably 5 to 10 mm.
  • the disposable diaper according to ⁇ 17> wherein the disposable diaper is folded and the folded portion is bonded to the outer surface of the sheet via the reinforcing adhesive layer or the second reinforcing adhesive layer.
  • ⁇ 19> Of the two sheets of the side panel, only the sheet positioned on the outer surface side of the side panel is located on the outer surface side of the sheet at the end and the front end of the side panel.
  • the sheet located on the outer surface side of the side panel is the inner surface side of the sheet at the end and / or the front end of the side panel. Any one of ⁇ 1> to ⁇ 16>, wherein the folded portion is joined to the inner surface of the sheet via the reinforcing adhesive layer and / or the second reinforcing adhesive layer.
  • the sheet located on the outer surface side of the side panel is folded back to the inner surface side of the sheet at the end or the front end of the side panel.
  • the disposable diaper according to ⁇ 20> wherein the folded portion is joined to the inner surface of the sheet via the reinforcing adhesive layer or the second reinforcing adhesive layer.
  • the sheet positioned on the outer surface side of the side panel is folded back to the inner surface side of the sheet at the end portion and the front end portion of the side panel.
  • the sheet positioned on the inner surface side of the side panel is folded back to the outer surface side of the sheet at the end and the front end of the side panel.
  • the folded portion is joined to the outer surface of the sheet via the reinforcing adhesive layer and the second reinforcing adhesive layer,
  • the disposable diaper according to any one of ⁇ 1> to ⁇ 16>.
  • the absorbent main body includes a surface sheet disposed on the inner surface side of the absorber and a three-dimensional guard forming sheet bonded to both sides of the surface sheet,
  • the three-dimensional guard forming sheet has a two-layer structure portion in which a single sheet is folded and laminated, and the layers are joined by thermal fusion, and the two-layer structure portion is connected to the side panel.
  • the disposable diaper according to any one of ⁇ 1> to ⁇ 23>, which is bonded.
  • Three-dimensional guard forming sheets are disposed along the longitudinal direction on both sides in the longitudinal direction of the absorbent main body, and the three-dimensional guard forming sheets are arranged in the longitudinal direction of the absorbent main body.
  • ⁇ 1> to ⁇ 24> which are fixed on both sides by an adhesive layer to a surface sheet, the outer composite sheet extending from a side edge of the surface sheet, and a sheet constituting the side panel.
  • the disposable diaper according to any one of the above.
  • the side panel has a plurality of intermediate adhesive layers between the main body side adhesive layer and the tip side adhesive layer, and a plurality of elastic members are provided in the respective adhesive layers.
  • the disposable diaper according to any one of ⁇ 1> to ⁇ 25>, wherein the disposable diaper is fixed between the two sheets via an adhesive that constitutes.
  • a plurality of the intermediate adhesive layers are intermittently formed in an intermediate region which is a region between the main body side adhesive layer and the tip side adhesive layer, and the main body side adhesive layer, No adhesive is disposed between the adjacent intermediate adhesive layers, between the adjacent intermediate adhesive layers, and between the tip side adhesive layer and the adjacent intermediate adhesive layer.
  • the main body side adhesive layer, the tip side adhesive layer, and the intermediate adhesive layer all intersect with a plurality of, preferably three or more, elastic members extending in the diaper width direction (X direction).
  • the disposable diaper according to any one of ⁇ 26> to ⁇ 28>, which extends in the longitudinal direction (Y direction) of the diaper.
  • the connecting adhesive layer joins between a base end portion (end portion on the absorbent main body side) of the side panel and the leakproof sheet, and a base end portion of the side panel ( The end of the absorbent main body) and the outer nonwoven fabric extended from the edge of the leakproof sheet, and the leakproof sheet and the three-dimensional guard forming sheet and / or the surface sheet are joined.
  • the disposable diaper according to any one of ⁇ 1> to ⁇ 29>.
  • Three-dimensional guard forming sheets are arranged along the longitudinal direction on both sides of the absorbent main body in the longitudinal direction, and the connecting adhesive layer is formed at the base end (absorption of the side panel).
  • the end portion on the side of the absorbent main body) and the leakproof sheet are joined, and the base end portion (end portion on the absorbent main body side) of the side panel and the edge of the leakproof sheet are extended.
  • the connecting adhesive layer joins between a base end portion (end portion on the absorbent main body side) of the side panel and the leakproof sheet, and a base end portion of the side panel ( The absorbent main body side end) and the outer layer nonwoven fabric extending from the edge of the leak-proof sheet, and the leak-proof sheet and the three-dimensional guard forming sheet and the surface sheet are joined,
  • the disposable diaper as described in ⁇ 30> or ⁇ 31>.
  • the base end portion (the end portion on the absorbent main body side) of the side panel is joined to a portion where the leakproof sheet and the outer nonwoven fabric are integrated via an outer adhesive layer,
  • the disposable diaper according to any one of ⁇ 1> to ⁇ 32>.
  • Three-dimensional guard forming sheets are disposed along the longitudinal direction on both sides in the longitudinal direction of the absorbent main body, The sheet constituting the inner surface side of the side panel is also joined to the three-dimensional guard forming sheet by the surface side adhesive layer, and the gap between the main body side adhesive layer and the surface side adhesive layer in the diaper width direction (X).
  • Three-dimensional guard forming sheets are disposed along the longitudinal direction on both sides in the longitudinal direction of the absorbent main body,
  • the three-dimensional guard forming sheet has an outer two-layer structure portion bonded to the side panel, and an inner two-layer structure portion bonded to the surface sheet 21 via an adhesive layer,
  • the disposable diaper according to any one of ⁇ 1> to ⁇ 34>.
  • ⁇ 36> The method for producing a disposable diaper according to any one of ⁇ 17> to ⁇ 19>, On the belt-like sheet that is the raw sheet of the sheet located on the outer surface side of the side panel, the adhesive for forming the reinforcing adhesive layer and the second reinforcing adhesive layer is continuously applied in a belt shape, respectively.
  • a step of folding back both side portions of the belt-like sheet so as to cover both the adhesives, the belt-like sheet which is a raw sheet of the sheet located on the inner surface side or the outer surface side of the side panel, the main body side adhesive layer and the tip A step of continuously applying the adhesive for forming the side adhesive layer in a band shape, and after the adhesive application, both the belt-like sheets that are the raw sheets of the two sheets constituting the side panel,
  • the manufacturing method of the disposable diaper which comprises the process of integrating the state which pinched
  • ⁇ 37> The method for producing a disposable diaper according to any one of ⁇ 20> to ⁇ 22>, On the belt-like sheet that is the raw sheet of the sheet located on the outer surface side of the side panel, the adhesive for forming the reinforcing adhesive layer and the second reinforcing adhesive layer is continuously applied in a belt shape, respectively.
  • a step of folding back both sides of the belt-like sheet so as to cover all or part of both adhesives, and forming the main body side adhesive layer and the tip side adhesive layer between the folded portions of the belt-like sheet A step of continuously applying the adhesive to the belt-like sheet, which is an original sheet of the sheet located on the inner surface side or the outer surface side of the side panel,
  • the manufacturing method of a disposable diaper which comprises the process of manufacturing the said side panel through the process of integrating the said belt-like sheet
  • the disposable diaper according to any one of ⁇ 17> to ⁇ 22> is manufactured using a continuous web of an elastic sheet having a configuration in which the side panels are continuous.
  • a method for manufacturing disposable diapers Cutting the continuous web of the fastening tape coated with the adhesive for forming the second connecting adhesive layer, and intermittently attaching the continuous web to the continuous web of the stretchable sheet with the side panel connected; A step of temporarily fastening the fastening tape to the continuous web of the stretchable sheet through the fastening portion, A step of continuously applying an adhesive for main body connection for forming an adhesive layer for connection to the continuous web of the stretchable sheet, The continuous web of the elastic sheet is cut, and it is attached to the continuous web of the outer layer composite sheet or the continuous composite sheet of the top sheet and the continuous web of the sheet for forming a three-dimensional web and the continuous web of the top sheet.
  • the side panel includes a pair of longitudinal structures for yarn conveyance arranged in parallel at a predetermined interval, and an elastic member wound around the pair of longitudinal structures for yarn conveyance to change the direction of the elastic members.
  • An elastic body winding means having a direction intersecting the longitudinal direction of the longitudinal structure for yarn conveyance, and an elastic member wound around the elastic body winding means and conveyed by the longitudinal structure for yarn conveyance,
  • ⁇ 40> The method for producing a disposable diaper according to ⁇ 23> above, On the first belt-like sheet, which is the raw sheet of the sheet located on the inner surface side of the side panel, continuously apply the adhesive for forming the main body side adhesive layer and the tip side adhesive layer in a belt shape, The first belt-like sheet and the second belt-like sheet, which is a raw sheet of the sheet located on the outer surface side of the side panel, are joined together so that an elastic member in an elongated state is sandwiched therebetween, and integrated.
  • the manufacturing method of a disposable diaper which comprises the process of folding and pressing on the surface which does not oppose the 1st strip
  • ⁇ 41> The method for producing a disposable diaper according to any one of ⁇ 1> to ⁇ 35>, wherein a continuous web of a stretchable sheet having a configuration in which side panels are connected is manufactured, and the continuous web is used.
  • the manufacturing method of the disposable diaper which manufactures a disposable diaper in the following procedures (1)-(9).
  • (1) The continuous web of the fastening tape coated with the adhesive for forming the second connection adhesive layer is cut and intermittently attached to the continuous web of the stretchable sheet having the side panel connected.
  • An adhesive (for main body connection) for forming a connection adhesive layer is continuously applied to the stretchable sheet.
  • the three-dimensional guard and the top sheet 21 are integrated in a separate process to form a top sheet continuous body.
  • the leak-proof sheet and the outer layer nonwoven fabric are integrated to form an outer layer composite sheet.
  • the elastic sheet is intermittently cut and attached to the top sheet (three-dimensional guard) or the outer composite sheet.
  • the absorbent body is sandwiched between the surface sheet and the outer composite sheet and integrated.
  • a method for producing a disposable diaper, wherein a continuous web of stretchable sheets having a configuration in which the side panels are connected is produced by the method of “the step of producing the side panel” according to ⁇ 36> or ⁇ 37>. .
  • Disposable body including an absorbent body and an absorbent main body including an outer layer composite sheet disposed on the outer surface side of the absorbent body, and a stretchable side panel attached to one or both sides of the absorbent main body A diaper,
  • the side panel has two sheets and an elastic member fixed between the two sheets, and a fastening tape is provided at a tip portion.
  • the outer layer composite sheet has a liquid-impervious or liquid-impervious leak-proof sheet and an outer-layer nonwoven fabric bonded to the outer surface side of the leak-proof sheet via an outer adhesive layer
  • the absorbent main body includes a surface sheet disposed on the inner surface side of the absorber and a three-dimensional guard forming sheet bonded to both side portions of the surface sheet,
  • the three-dimensional guard forming sheet has a two-layer structure portion in which one sheet is folded and laminated, and the layers are bonded to each other, and the two-layer structure portion is bonded to the side panel. Disposable diapers.
  • Three-dimensional guard forming sheets are disposed along the longitudinal direction on both sides in the longitudinal direction of the absorbent main body,
  • the three-dimensional guard forming sheet has an outer two-layer structure portion bonded to the side panel, and an inner two-layer structure portion bonded to a surface sheet via an adhesive layer.
  • 43> in the disposable diaper ⁇ 45> in the sheet for forming a three-dimensional guard the two-layer structure part joined to the side panel is joined by a heat-sealed part in which the layers are formed in a dotted pattern.
  • the area of each heat-sealed portion 27 is 0.5 mm 2 or more for the lower limit, preferably 1.5 mm 2 or more, and the upper limit is 10 mm 2 or less, preferably 5 mm 2 or less.
  • the two-layer structure part joined to the side panel is joined with a heat-sealed part between the layers, and the area ratio of the heat-fused part is about the lower limit. Preferably, it is 2% or more, more preferably 5% or more, and the upper limit is preferably 15% or less, more preferably 10% or less, from the above ⁇ 43> to ⁇ 45>.
  • Three-dimensional guard forming sheets are disposed along the longitudinal direction on both sides in the longitudinal direction of the absorbent main body, and the three-dimensional guard forming sheets are arranged in the longitudinal direction of the absorbent main body.
  • ⁇ 43> to ⁇ 46> which are fixed to the surface sheet, the outer layer composite sheet extending from the side edge of the surface sheet, and the sheet constituting the side panel via an adhesive layer on both sides.
  • the present invention it is possible to provide a disposable diaper in which the bonding strength between the side panel and the absorbent main body is increased while suppressing a decrease in flexibility of the diaper.

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

Abstract

L'invention concerne une couche jetable (1) qui est équipée : d'un corps principal absorbant (2) contenant un corps absorbant (23) ainsi qu'une feuille composite externe (22); et d'un panneau latéral (3) doté de propriétés d'extension/rétraction. Ce panneau latéral (3) possède deux feuilles (31, 32) ainsi qu'un élément élastique (33), et possède également sur sa partie extrémité avant (3a) une bande de fixation (4). La feuille composite externe (22) possède un tissu non-tissé externe (22b) lié à une feuille anti-fuites (22a) par une couche adhésive externe (61). Le panneau latéral (3) possède des couches adhésives (35, 36) côté corps principal et côté extrémité de base, sa partie extrémité de base (3b) est renforcée à l'aide d'une couche adhésive de renforcement (63) superposée ou bout à bout avec la couche adhésive (35), et est lié à la feuille composite externe (22) par une couche adhésive de raccord (62). Dans la direction de la largeur de la couche jetable, la couche adhésive (35) est formée séparément vers l'extérieur par rapport à la couche adhésive externe (61), et les couches adhésives (35, 63, 62, 61) sont agencées de manière à ne pas créer d'intervalle.
PCT/JP2012/068700 2011-07-28 2012-07-24 Couche jetable, et procédé de fabrication de celle-ci WO2013015278A1 (fr)

Priority Applications (1)

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CN201280037946.4A CN103717187B (zh) 2011-07-28 2012-07-24 一次性尿布和其制造方法

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JP2011-165576 2011-07-28
JP2011165576 2011-07-28

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WO2014042088A1 (fr) * 2012-09-12 2014-03-20 花王株式会社 Couche jetable
CN103750955A (zh) * 2014-01-13 2014-04-30 黄山富田精工制造有限公司 吸收性物品

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JP6370344B2 (ja) 2016-07-28 2018-08-08 花王株式会社 使い捨ておむつ
CN109982676B (zh) * 2016-12-12 2021-06-22 花王株式会社 一次性尿布
EP3875067A4 (fr) * 2018-10-29 2022-06-29 Kao Corporation Article absorbant
JP7271249B2 (ja) * 2019-03-20 2023-05-11 ユニ・チャーム株式会社 パンツ型吸収性物品

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