WO2018123637A1 - Article absorbant - Google Patents

Article absorbant Download PDF

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Publication number
WO2018123637A1
WO2018123637A1 PCT/JP2017/045022 JP2017045022W WO2018123637A1 WO 2018123637 A1 WO2018123637 A1 WO 2018123637A1 JP 2017045022 W JP2017045022 W JP 2017045022W WO 2018123637 A1 WO2018123637 A1 WO 2018123637A1
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WO
WIPO (PCT)
Prior art keywords
adhesive
width direction
length
absorbent article
arrangement
Prior art date
Application number
PCT/JP2017/045022
Other languages
English (en)
Japanese (ja)
Inventor
政典 竹村
彦行 鈴木
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 CN201780080073.8A priority Critical patent/CN110099655B/zh
Priority to RU2019123581A priority patent/RU2743032C2/ru
Publication of WO2018123637A1 publication Critical patent/WO2018123637A1/fr

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    • 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
    • A61F13/51—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 outer layers
    • A61F13/514—Backsheet, i.e. the impermeable cover or layer furthest from the skin
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/53—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/53—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium
    • A61F13/539—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium characterised by the connection of the absorbent layers with each other or with the outer layers

Definitions

  • the present invention relates to an absorbent article.
  • Patent Document 1 discloses a waterproof outer casing, a water absorbing pad that enters inside the outer edge of the waterproof outer casing so as to leave a side edge on each side portion, and is fixed inside the outer casing, A disposable diaper for incontinence children and adults is described that includes a jacket and an inner water absorbent sheet overlying the inner surface of the water absorbent pad.
  • FIG. 1 of patent document 1 it has shown that it joined with the adhesive agent which apply
  • an absorbent body included in an absorbent article one having an absorbent core that absorbs excreted fluid such as urine and a core wrap sheet that covers the absorbent core is known.
  • the applicant previously has an absorbent core containing an absorbent polymer and a coating material that wraps the absorbent core, and the skin-side coating material on the skin facing surface side of the coating material and the skin facing of the absorbent core.
  • the non-skin-side covering material on the non-skin facing surface side of the covering material and the non-skin facing surface of the absorbent core are fixed via the non-skin-side adhesive.
  • the absorbent article provided with the absorber which has been proposed is proposed (patent document 2).
  • the present invention is a vertically long absorbent article that includes a top sheet, an absorbent body, and a back sheet, and has a longitudinal direction and a width direction perpendicular thereto.
  • the absorbent body has an absorbent core and a core wrap sheet that covers the absorbent core.
  • the lower core wrap sheet positioned on the non-skin facing surface side of the absorbent core is joined to the non-skin facing surface of the absorbent core via a first adhesive arranged in a stripe shape, and the stripe It has joined to the skin opposing surface of the said back surface sheet via the 2nd adhesive agent arranged in the shape.
  • the lower core wrap sheet has a plurality of non-adhesive portions in the width direction that are not bonded to any of the absorbent core and the back sheet, and each of the plurality of non-adhesive portions is in the longitudinal direction.
  • An extended absorbent article is provided.
  • FIG. 1 is a perspective view of a disposable diaper as an embodiment of the present invention.
  • FIG. 2 is a plan view showing a developed state in which the disposable diaper shown in FIG. 1 is expanded in a planar shape.
  • FIG. 3 is a cross-sectional view schematically showing a cross section taken along line II of FIG.
  • FIG. 4 is a plan view showing a joined state by the first to third adhesives according to the present invention.
  • FIGS. 5A to 5D are views showing the arrangement of the first to third adhesives according to the present invention.
  • FIG. 6A is a diagram showing a non-adhesive portion according to the present invention
  • FIG. 6B is a diagram showing an overlap between the non-adhesive portion and the third adhesive non-arranged portion.
  • FIG. 7 is an explanatory diagram for explaining the function and effect of the absorbent article of the present invention.
  • the absorbent body of the absorbent article is required to have a high absorption capacity capable of absorbing a large amount of urine even when the absorbent article is used for a long time, such as at night.
  • Patent Document 1 does not disclose a configuration that improves the absorption capacity of the absorber.
  • the absorbent article of patent document 2 has room for improvement in the absorption capacity of an absorber.
  • an object of the present invention is to provide an absorbent article that can eliminate the drawbacks of the above-described conventional technology.
  • FIG. 1, 2 and 3 show the basic structure of a disposable diaper 1 (hereinafter also simply referred to as diaper 1) which is an embodiment of the absorbent article of the present invention.
  • the diaper 1 is provided with the surface sheet 12, the absorber 11, and the back surface sheet 15, as shown in FIG.2 and FIG.3.
  • the top sheet 12 forms a skin facing surface of the diaper 1
  • the back sheet 15 forms a non-skin facing surface of the diaper 1.
  • the absorber 11 is disposed between the top sheet 12 and the back sheet 15 in the thickness direction of the diaper 1.
  • the skin facing surface is a surface directed toward the wearer's skin when worn in the absorbent article or a component thereof, and the non-skin facing surface is the skin side of the wearer when worn in the absorbent article or a component thereof. Is the side facing the opposite side.
  • the diaper 1 (absorbent article) has a vertically long shape, and is orthogonal to the longitudinal direction X in the longitudinal direction X (longitudinal direction) and in a state where the diaper 1 is flattened as shown in FIG. And a width direction Y.
  • the longitudinal direction X of the diaper 1 is a direction corresponding to the front-rear direction of the wearer when worn.
  • the diaper 1 is arranged in the longitudinal direction X between the abdominal part A located on the abdomen side of the wearer at the time of wearing, the dorsal part B located on the dorsal side, and the abdominal part A and the dorsal part B. Crotch part C.
  • the diaper 1 has a structure in which the left and right sides of the center line CL extending in the longitudinal direction X by dividing the diaper 1 in the width direction Y are symmetrical with respect to the center line CL (see FIG. 2). ).
  • the diaper 1 is an unfolded disposable diaper.
  • Fastening tapes 7 are provided on both side edges of the back side B, and a landing zone 8 that fastens the fastening tape 7 on the outer surface of the abdominal side A. Is provided.
  • a sheet 16 for forming a three-dimensional gather having elastic members 16a is disposed on both sides of the diaper 1 in the longitudinal direction X, and the elastic member 16a contracts to the crotch portion C in the wearing state to the wearer's skin side.
  • a three-dimensional gather standing up toward is formed.
  • the leg elastic member 17 is arranged in an extended state at a portion arranged around the leg in the crotch C, and due to the contraction, the leg crotch C fits around the wearer's leg in the worn state.
  • the absorbent body 11 in the diaper 1 has an absorbent core 13 and a core wrap sheet 14 that covers the absorbent core 13.
  • the absorptive core 13 can be comprised from the mixed fiber body of liquid absorbing fibers, such as a pulp fiber, and a water absorbing polymer, for example.
  • the liquid-absorbing fiber include cellulose-based hydrophilic fibers such as pulp fiber, rayon fiber, cotton fiber, and cellulose acetate.
  • fibers made of a synthetic resin such as polyolefin, polyester, polyamide, etc., made hydrophilic with a surfactant or the like can also be used.
  • Water-absorbing polymers include sodium polyacrylate, (acrylic acid-vinyl alcohol) copolymer, cross-linked sodium polyacrylate, (starch-acrylic acid) graft copolymer, and (isobutylene-maleic anhydride) copolymer. Examples thereof include a polymer and a saponified product thereof, and polyaspartic acid.
  • water-absorbing polymer those capable of absorbing water having a mass of 20 times its own weight, preferably 30 times or more are preferably used.
  • the core wrap sheet 14 of the diaper 1 includes an upper core wrap sheet 14 a located on the skin facing surface side of the absorbent core 13 and a lower core wrap sheet 14 b located on the non-skin facing surface side. have.
  • the core wrap sheet 14 for example, tissue paper or a water-permeable nonwoven fabric is used.
  • the upper core wrap sheet 14a and the lower core wrap sheet 14b may be a single continuous sheet or separate sheets.
  • the core wrap sheet 14 may wrap the entire absorbent core 13 by one sheet, or may wrap the absorbent core 13 by combining two or more sheets.
  • the lower core wrap sheet 14b is bonded to the non-skin facing surface of the absorbent core 13 via the first adhesive 2, and is bonded to the skin facing surface of the back sheet 15 via the second adhesive 3.
  • the first adhesive 2 is an adhesive that joins the non-skin facing surfaces of the lower core wrap sheet 14 b and the absorbent core 13
  • the second adhesive 3 is the skin of the lower core wrap sheet 14 b and the back sheet 15.
  • the 2nd adhesive agent 3 may be distribute
  • the 2nd adhesive 3 has joined the skin opposing surface of the back surface sheet 15 to any one or both of the surface sheet 12 and the solid gathers formation sheet 16 in the said extension part.
  • the first adhesive 2 and the second adhesive 3 are terms used for convenience in describing the present invention, and the same adhesive is used for the first adhesive 2 and the second adhesive 3. Alternatively, different types of adhesives may be used.
  • the diaper 1 has a back sheet 15 on the non-skin facing surface side of the lower core wrap sheet 14b.
  • the back sheet 15 in the diaper 1 is composed of a laminate of a leak-proof sheet 15a made of a liquid-impermeable or liquid-impermeable resin film and an exterior nonwoven fabric 15b that covers the non-skin facing surface of the leak-proof sheet 15a.
  • the back surface sheet 15 in this invention may consist only of the leak-proof sheet
  • the first adhesive 2 is arranged in stripes as shown in FIGS. Specifically, between the lower core wrap sheet 14 b and the non-skin facing surface of the absorbent core 13, the first adhesive placement portion 20 in which the first adhesive 2 is disposed and the first adhesive 2 are The first adhesive non-arranged portions 25 that are not disposed extend alternately in the width direction Y and extend in the longitudinal direction X, respectively.
  • the second adhesive 3 is also arranged in a stripe shape. Specifically, between the lower core wrap sheet 14 b and the back sheet 15, the second adhesive placement portion 30 provided with the second adhesive 3 and the second adhesive 3 not provided.
  • the adhesive non-arranged portions 35 alternately extend in the width direction Y and extend in the longitudinal direction X, respectively.
  • the length of the first adhesive placement part 20 and the length of the second adhesive placement part 30 in the width direction Y may or may not be constant, as in the present embodiment. It is preferable that it is constant. Further, the length of the first adhesive non-arrangement portion 25 and the length of the second adhesive non-arrangement portion 35 in the width direction Y may be constant as shown in FIGS. Although not necessarily constant, it is preferably constant as in the present embodiment.
  • the lower core wrap sheet 14b has a plurality of non-adhesive portions 5 in the width direction Y that are not bonded to either the absorbent core 13 or the back sheet 15.
  • the non-adhesion part 5 is a part where the first adhesive non-arrangement part 25 and the second adhesive non-arrangement part 35 in the diaper 1 are overlapped, and the part includes the first adhesive 2 and the second adhesive. None of the adhesive 3 is present.
  • the plurality of non-adhesive portions 5 extend in the longitudinal direction X, similarly to the first adhesive non-arranged portion 25 and the second adhesive non-arranged portion 35.
  • the non-adhesive portion 5 of the lower core wrap sheet 14b is a portion that does not overlap the first adhesive placement portion 20 and does not overlap the second adhesive placement portion 30 and is formed to extend in the longitudinal direction X.
  • the form in which the first adhesive non-arrangement part 25 and the second adhesive non-arrangement part 35 overlap is not particularly limited. That is, the non-adhesive part 5 is located between the first adhesive placement parts 20, between the second adhesive placement parts 30, and between the first adhesive placement part 20 and the second adhesive 30. It may be formed.
  • the first adhesive non-arrangement part 25 and the second adhesive non-arrangement part 35 completely overlap to form the non-adhesion part 5 as in the left non-adhesion part 5 of FIG. Also good.
  • the first adhesive non-arranged portion 25 and the second adhesive non-arranged portion 35 completely overlap with one of both end portions of the first adhesive non-arranged portion 25 in the width direction Y and the second adhesive non-arranged.
  • both end portions of the portion 35 completely coincide with each other, and both end portions of one adhesive non-arranged portion in the width direction Y extend outward from both side portions of the other adhesive non-arranged portion. Including both cases.
  • the non-adhesive part 5 may be formed by overlapping both adhesive non-arranging parts 25 and 35. In this case, the non-bonding part 5 is formed on both sides of the first adhesive placement part 20 or the second adhesive placement part 30 in the width direction Y.
  • the lower core wrap sheet 14b since the lower core wrap sheet 14b has the non-adhesive portion 5 that is not joined to either the absorbent core 13 or the back sheet 15, the lower core wrap sheet 14b is easy to extend in the width direction Y, and when the absorbent body 11 absorbs excretory fluid, the absorbent body 11 tends to swell as a whole (see FIG. 7), and swelling is a phenomenon in which swelling of the water-absorbing polymer and the absorbent body is hindered. Inhibition is also difficult to occur. Therefore, the absorption capacity of the absorbent polymer is effectively utilized, and the absorbent body 11 exhibits excellent absorption performance.
  • the absorbent body 11 becomes difficult to swell or the water absorbing polymer swells and inhibits absorption. In some cases, the absorption capacity of the water-absorbing polymer in the body 11 cannot be sufficiently exhibited.
  • the first adhesive placement section 20 preferably has a shorter placement pitch in the width direction Y than the second adhesive placement section 30 in which the second adhesive 3 is placed.
  • the length of the arrangement pitch Pa of the first adhesive arrangement part 20 is the length Wa of the first adhesive arrangement part 20 and the length of the adhesive non-arrangement part 25 in the width direction Y. This is the total length of Da.
  • the length of the arrangement pitch Pb of the second adhesive arrangement part 30 is the length Wb of the adhesive arrangement part 30 and the length of the adhesive non-arrangement part 35 in the width direction Y, as shown in FIG. Is the total length of Db.
  • the arrangement pitch Pa [see FIG. 5 (a)] of the first adhesive arrangement part 20 is preferably 10% or more with respect to the arrangement pitch Pb [see FIG. 5 (b)] of the second adhesive arrangement part 30. More preferably, it is 15% or more, preferably 85% or less, more preferably 50% or less, and preferably 10% or more and 85% or less, more preferably 15% or more and 50% or less.
  • 5B is preferably 1 mm or more, More preferably, it is 10 mm or more, preferably 45 mm or less, more preferably 35 mm or less, and preferably 1 mm or more and 45 mm or less, more preferably 10 mm or more and 35 mm or less.
  • the first adhesive placement unit 20 has a longer length in the width direction Y than the second adhesive placement unit 30.
  • the length Wa [see FIG. 5 (a)] of the first adhesive placement portion 20 in the width direction Y is relative to the length Wb [see FIG. 5 (b)] of the second adhesive placement portion 30 in the width direction Y.
  • it is 120% or more, more preferably 150% or more, preferably 400% or less, more preferably 300% or less, and preferably 120% or more and 400% or less, more preferably 150% or more and 300%. % Or less.
  • the length Wa of the first adhesive placement section 20 in the width direction Y (see FIG.
  • the difference is preferably 0.5 mm or more, more preferably 1.0 mm or more, and preferably 3.0 mm or less, more preferably 2.5 mm or less, and preferably 0.5 mm or more and 3.0 mm or less, More preferably, it is 1.0 mm or more and 2.5 mm or less.
  • the first stripe arrangement region 21 is a region where the first adhesive 2 is arranged in a stripe shape, and is a region including the first adhesive arrangement part 20 and the first adhesive non-arrangement part 25. From the viewpoint of suppressing the swelling inhibition of the absorbent body 11 and the balance of the bonding strength between the absorbent core 13 and the lower core wrap sheet 14b, the first adhesive 2 is preferably arranged with the following dimensions.
  • the length W1 (see FIG. 4) of the first stripe arrangement region 21 in the width direction Y is preferably the same as the maximum length W13 (see FIG. 4) of the absorbent core 13 in the same direction Y.
  • “same” means that the ratio between the length W1 of the first stripe arrangement region 21 in the width direction Y and the maximum length W13 of the absorbent core 13 in the same direction Y is within 10%.
  • region 21 in the longitudinal direction X is the same as the full length L13 (refer FIG. 4) of the absorptive core 13 in the same direction X.
  • “same” means that the ratio between the length L1 of the first stripe arrangement region 21 in the longitudinal direction X and the total length L13 of the absorbent core 13 in the same direction X is within 10%. .
  • the length Wa [see FIG. 5A] of the first adhesive placement portion 20 in the width direction Y is preferably 20% or more, more preferably 30 with respect to the placement pitch Pa of the first adhesive placement portion 20. % Or more, preferably 80% or less, more preferably 70% or less, and preferably 20% or more and 80% or less, more preferably 30% or more and 70% or less.
  • the length Wa [see FIG. 5 (a)] of the first adhesive placement portion 20 in the width direction Y is preferably 1.0 mm or more, more preferably 1.5 mm or more, and preferably 5.0 mm or less.
  • the length Da [see FIG. 5 (a)] of the first adhesive non-arranged portion 25 in the width direction Y is preferably 0.5 mm or more, more preferably 1.0 mm or more, and preferably 5.0 mm or less. More preferably, it is 4.0 mm or less, preferably 0.5 mm or more and 5.0 mm or less, more preferably 1.0 mm or more and 4.0 mm or less.
  • the second stripe arrangement area 31 is an area in which the second adhesive 3 is arranged in a stripe shape, and is an area including the second adhesive arrangement portion 30 and the second adhesive non-arrangement portion 35.
  • the second adhesive 3 may be arranged in the same pattern in the extending portion beyond the side edge of the lower core wrap sheet 14b in the width direction Y. In this case, however, the lower core wrap sheet
  • the second stripe arrangement region 31 includes not only the portion overlapping with 14b but also the second adhesive arrangement portion 20 arranged beyond the side edge of the lower core wrap sheet 14b in the width direction Y.
  • the second adhesive 3 is preferably arranged in the following ranges and dimensions.
  • the second stripe arrangement region 31 preferably extends over the entire area of the lower core wrap sheet 14b in the width direction Y, and more preferably extends outward in the width direction Y than the lower core wrap sheet 14b. .
  • the length W2 (see FIG. 4) of the second stripe arrangement region 31 in the width direction Y is preferably longer than the maximum length W14b (see FIG. 4) of the lower core wrap sheet 14b in the same direction Y.
  • the second stripe arrangement region 31 preferably extends over the entire length of the lower core wrap sheet 14b in the longitudinal direction X, and extends outward in the longitudinal direction X from the lower core wrap sheet 14b. More preferred.
  • the length L2 (see FIG. 4) of the second stripe arrangement region 31 in the longitudinal direction X is preferably longer than the total length L14b (see FIG. 4) of the lower core wrap sheet 14b in the same direction X. More preferably, it is equal to the total length of the leak-proof sheet 15a, and more preferably equal to the total length of the absorbent article in the same direction X.
  • the length Wb [see FIG. 5B] of the second adhesive placement portion 30 in the width direction Y is preferably 2.5% or more with respect to the placement pitch Pb of the second adhesive placement portion 30. Is 3% or more, preferably 15% or less, more preferably 10% or less, and preferably 2.5% or more and 15% or less, more preferably 3% or more and 10% or less.
  • the length Wb [see FIG. 5 (b)] of the second adhesive arrangement portion 30 in the width direction Y is preferably 0.5 mm or more, more preferably 1.0 mm or more, and preferably 3.0 mm or less.
  • the length Db [see FIG. 5B] of the second adhesive non-arranged portion 35 in the width direction Y is preferably 3 mm or more, more preferably 5 mm or more, and preferably 50 mm or less, more preferably 40 mm or less. It is preferably 3 mm to 50 mm, more preferably 5 mm to 40 mm.
  • the length W5 of the non-adhesive portion 5 in the width direction Y is the length of the first adhesive non-arranged portion 25 in the width direction Y. It is preferably 20% or more, more preferably 40% or more, and preferably 100% or less, more preferably 80% or less, and preferably 20% or more with respect to Da [see FIG. 6 (a)]. 100% or less, more preferably 40% or more and 80% or less.
  • the total length W5 of the non-adhesive portion 5 in the width direction Y is the length Db of the second adhesive non-arranged portion 35 in the width direction Y (see FIG. 6A).
  • the length W5 of the non-bonded portion 5 in the width direction Y is preferably 0.5 mm or more, more preferably 1.0 mm or more, and preferably 4.0 mm or less, more preferably It is 2.5 mm or less, preferably 0.5 mm or more and 4.0 mm or less, more preferably 1.0 mm or more and 2.5 mm or less.
  • the non-adhesive portion 5 preferably extends continuously over the entire length of the absorbent body 11 in the longitudinal direction X, and more preferably equal to the total length of the absorbent article.
  • the length of the 1st adhesive agent 2 in the longitudinal direction X and the 2nd adhesive agent 3 is shorter than the full length of an absorbent article (diaper 1), it is rather than the edge of both the adhesive agents 2 and 3 in the longitudinal direction X.
  • the portion extending outward, that is, the portion where both the adhesives 2 and 3 are not present in the width direction Y is continuous with the first adhesive non-arranged portion 25 and the second adhesive non-arranged portion 35, and is not bonded. 5 may be comprised.
  • the second adhesive 3 in the diaper 1 has a weak adhesive 3a and a strong adhesive 3b that are arranged at different sites.
  • the second adhesive 3 it is also possible to use a plurality of types of adhesives that join the lower core wrap sheet and the back sheet with different adhesive strengths.
  • the adhesive strength when wet is different between the adhesive disposed in the central region in the width direction Y and the adhesive disposed in each of the side regions sandwiching the central region. It is preferable that an adhesive having a stronger adhesive strength when wet than an adhesive disposed in the central region is disposed in each of the side regions.
  • the central portion of the absorbent body 11 in the width direction Y can be easily extended in the width direction Y, and the swelling inhibition of the absorbent body 11 can be further suppressed.
  • the adhesive strength when wet is assumed to be the adhesive strength in a state where the absorbent body 11 is in contact with the excretory fluid and wetted. The magnitude of the adhesive strength when wet is confirmed by the following method.
  • the weak adhesive 3a is preferably disposed in the central region M of the lower core wrap sheet 14b in the width direction Y, but the central region M has a maximum length W14b of the lower core wrap sheet 14b in the width direction Y. Is preferably arranged in the central area when the area is divided into three areas.
  • the strong adhesive 3b is preferably disposed in two regions on both sides when the maximum length W14b of the lower core wrap sheet 14b in the width direction Y is equally divided into three regions.
  • the back sheet 15 includes a leak-proof sheet 15a and an exterior nonwoven fabric 15b. As shown in FIGS. 3 and 4, the leak-proof sheet 15 a and the exterior nonwoven fabric 15 b are joined via a third adhesive 4 arranged in a stripe shape.
  • the third adhesive 4 is an adhesive that joins the leak-proof sheet 15a and the exterior nonwoven fabric 15b.
  • the third adhesive is also a term used for convenience in describing the present invention, and the same adhesive as the first adhesive and the second adhesive described above may be used as the third adhesive, or different. Different types of adhesives may be used.
  • a plurality of third adhesive arrangement portions 40 on which the third adhesive 4 is arranged are arranged at intervals in the width direction Y. That is, the third adhesive placement portions 40 and the third adhesive non-placement portions 45 where the third adhesive 4 is not disposed are alternately formed in the width direction Y and extend in the longitudinal direction X, respectively. Yes.
  • the third adhesive placement section 40 may or may not have a constant interval between the third adhesive placement sections 40, as in this embodiment. In addition, it is preferably constant.
  • a third adhesive non-arrangement portion 45 exists between the third adhesive arrangement portions 40, and the leak-proof sheet 15 a and the exterior nonwoven fabric 15 b are not joined at that portion.
  • a region including the third adhesive placement portion 40 and the third adhesive non-placement portion 45 which is a region where the third adhesive 4 is disposed in a stripe shape, is also referred to as a third stripe placement region 41.
  • the exterior nonwoven fabric 15b and the exterior nonwoven fabric 15b are prevented during or during wearing (wearing). While maintaining the bonding strength with the leakage sheet 15a, the texture of the exterior nonwoven fabric 15b, in particular, the feel of the non-skin facing surface of the exterior nonwoven fabric 15b can be softened. Moreover, when the thing which has moisture permeability is used as the leak-proof sheet
  • the suppression of the swelling of the absorber 11 mentioned above can be suppressed more. it can.
  • a portion where the third adhesive non-arrangement portion 45 and the non-adhesion portion 5 overlap is also referred to as a non-adhesion overlap portion 6. None of the first adhesive 2, the second adhesive 3, and the third adhesive 4 exists in the non-adhesive overlap portion 6.
  • the length W6 of the non-adhesive overlap portion 6 in the width direction Y [see FIG. (See (b)), preferably 20% or more, more preferably 40% or more, preferably 100% or less, more preferably 80% or less, and preferably 20% or more and 100% or less, More preferably, it is 40% or more and 80% or less.
  • the length W6 (see FIG. 6B) of the non-adhesive overlap portion 6 in the width direction Y is equal to the length Dc of the third adhesive non-arrangement portion 45 in the width direction Y (see FIG. 6B).
  • the length W6 of the non-adhesive overlap portion 6 in the width direction Y is preferably 0.5 mm or more, more preferably 1.0 mm or more, and preferably 3.5 mm or less. More preferably, it is 2.0 mm or less, Preferably it is 0.5 mm or more and 3.5 mm or less, More preferably, it is 1.0 mm or more and 2.0 mm or less.
  • the non-adhesive overlapping portion 6 preferably extends continuously in the longitudinal direction X over the entire length of the absorbent body 11, and more preferably equal to the total length of the product.
  • the second adhesive arrangement portion 30 has a longer arrangement pitch in the width direction Y than the third adhesive arrangement portion 40.
  • the length of the arrangement pitch Pc of the third adhesive arrangement part 40 is the length Wc of the third adhesive arrangement part 40 in the width direction Y and the third adhesive non-arrangement part 45. This is the total length of the lengths Dc.
  • the arrangement pitch Pc [see FIG. 5 (c)] of the third adhesive arrangement portion 40 is preferably 5% or more, more preferably, relative to the arrangement pitch Pb [see FIG. 5 (b)] of the second adhesive 3. Is 10% or more, preferably 60% or less, more preferably 30% or less, and preferably 5% or more and 60% or less, more preferably 10% or more and 30% or less.
  • 5C is preferably 1 mm or more, and more preferably Is 10 mm or more, preferably 50 mm or less, more preferably 40 mm or less, and preferably 1 mm or more and 50 mm or less, more preferably 10 mm or more and 40 mm or less.
  • the second adhesive placement portion 30 has a shorter length in the width direction Y than the third adhesive placement portion 40.
  • the length Wc (see FIG. 5C) of the third adhesive placement portion 40 in the width direction Y is relative to the length Wb of the second adhesive 3 in the width direction Y (see FIG. 5B).
  • it is 150% or more, more preferably 200% or more, preferably 500% or less, more preferably 400% or less, and preferably 150% or more and 500% or less, more preferably 200% or more and 400% or less. It is.
  • the length Wb of the second adhesive placement section 30 in the width direction Y (see FIG. 5B) and the length Wc of the third adhesive placement section 40 in the width direction Y see FIG.
  • the difference is preferably 0.5 mm or more, more preferably 1.0 mm or more, and preferably 4.0 mm or less, more preferably 3.0 mm or less, and preferably 0.5 mm or more and 4.0 mm or less. More preferably, it is 1.0 mm or more and 3.0 mm or less.
  • the third adhesive 4 is preferably arranged with the following dimensions.
  • the total area of the third adhesive arrangement portion 40 is preferably 25% or more, more preferably 30% or more, and preferably 50% or less, more preferably 40 with respect to the area of the third stripe arrangement region 41. % Or less, preferably 25% or more and 50% or less, more preferably 30% or more and 40% or less.
  • the third stripe arrangement region 41 extends over the entire leakproof sheet 15a in the width direction Y.
  • the length W3 (see FIG. 4) of the third stripe arrangement region 41 in the width direction Y is preferably longer than the maximum length of the absorber 11 in the width direction Y, and the length W15a of the leak-proof sheet 15a in the width direction Y. It is more preferable that the same.
  • region 41 covers the whole region of the leak-proof sheet
  • the third stripe arrangement region 41 in the longitudinal direction X is preferably longer than the entire length of the absorbent body 11 in the longitudinal direction X, and is the same as the length L15a of the leakproof sheet 15a. It is more preferable. Moreover, it is preferable that the length L3 (refer FIG. 4) of the 3rd stripe arrangement
  • the arrangement pitch Pc (see FIG. 5C) of the third adhesive 4 in the width direction Y is preferably 1.5 mm or more, more preferably 2.0 mm or more, and preferably 8.0 mm or less, more preferably. Is 6.0 mm or less, preferably 1.5 mm or more and 8.0 mm or less, more preferably 2.0 mm or more and 6.0 mm or less.
  • the length Wc of the third adhesive placement portion 40 in the width direction Y is preferably 15% or more, more preferably 20 with respect to the placement pitch Pc of the third adhesive placement portion 40. % Or more, preferably 70% or less, more preferably 60% or less, and preferably 15% or more and 70% or less, more preferably 20% or more and 60% or less.
  • the length Wc [see FIG. 5 (c)] of the third adhesive arrangement portion 40 in the width direction Y is preferably 0.5 mm or more, more preferably 1.0 mm or more, and preferably 4.0 mm or less, More preferably, it is 3.0 mm or less, Preferably it is 0.5 mm or more and 4.0 mm or less, More preferably, it is 1.5 mm or more and 3.0 mm or less.
  • an adhesive arranged in a spiral shape between the leak-proof sheet and the exterior nonwoven fabric is used. It is preferable that it is joined via. Further, it is preferable that a plurality of spiral continuous lines 90 forming the third adhesive disposing portion 40s are intermittently disposed in the width direction Y and extend in the longitudinal direction X (see FIG. 5D).
  • the third adhesive non-arranged portion 45s arranged between the third adhesive arrangement portions 40s made of the third adhesive 4 arranged in a spiral shape overlaps the non-adhesive portion 5 described above, the absorber 11 Inhibition of swelling can be further suppressed.
  • positioning part 40 has the some folding
  • the positions in the width direction Y of the plurality of folded portions 91 are aligned on both sides in the width direction Y, and between the folded portion 91 on one side and the folded portion 91 on the other side in the width direction Y.
  • the length of is uniform.
  • the positions in the width direction of the plurality of folded portions 91 are uneven on both sides in the width direction Y, that is, the length between the folded portion 91 on one side in the width direction and the folded portion 91 on the other side is small.
  • the “spiral shape” includes a continuous omega character pattern in which a plurality of omega characters are continuous at both left and right ends.
  • a region including the third adhesive placement portion 40s and the third adhesive non-placement portion 45s, which is a region where the third adhesive 4 is disposed in a spiral shape, is also referred to as a spiral placement region 41s.
  • the third spiral arrangement region 41s in the width direction Y is also longer than the maximum length of the absorber 11 in the width direction Y, as is the length W3 of the third stripe arrangement region 41. It is preferable that the length is the same as the length W15a of the leak-proof sheet 15a in the width direction Y.
  • the length Ls (see FIG. 4) of the spiral arrangement region 41s in the longitudinal direction X is preferably longer than the total length of the absorbent body 11 in the longitudinal direction X, and the length of the leak-proof sheet 15a in the longitudinal direction X. More preferably, it is the same as L15a.
  • the arrangement pitch Pcs (see FIG. 5 (d)) of the third adhesive arrangement portion 40 in the width direction Y is preferably 4 mm or more, more preferably 8 mm or more, and preferably 40 mm or less, more preferably 30 mm or less. Yes, and preferably 4 mm or more and 40 mm or less, more preferably 8 mm or more and 30 mm or less.
  • the length of the arrangement pitch Pcs of the third adhesive 4 is the length Wcs of the third adhesive arrangement part 40s and the length of the third adhesive non-arrangement part 45s in the width direction Y. This is the total length of Dcs.
  • the length Wcs of the third adhesive placement portion 40s in the width direction Y is the maximum length between the folded portion 91 on one side and the folded portion 91 on the other side in the width direction Y.
  • the length Dcs of the third adhesive non-arranged portion 45s is the maximum length of the interval between the folded portions 91 facing each other in the third adhesive disposition portion 40s adjacent in the width direction Y.
  • the length Wcs (see FIG. 5D) of the third adhesive placement portion 40s in the width direction Y is preferably 20% or more, more preferably 30 with respect to the placement pitch Pcs of the third adhesive placement portion 40. % Or more, preferably 80% or less, more preferably 70% or less, and preferably 20% or more and 80% or less, more preferably 30% or more and 70% or less.
  • the length Wcs (see FIG. 5D) of the third adhesive arrangement portion 40s in the width direction Y is preferably 3 mm or more, more preferably 4 mm or more, and preferably 20 mm or less, more preferably 15 mm or less. Yes, preferably 3 mm or more and 20 mm or less, more preferably 4 mm or more and 15 mm or less.
  • the non-adhesive overlap portion 6 which is a portion where the third adhesive non-arranged portion 45 and the non-adhesive portion 5 overlap in the plan view of the absorbent article.
  • the length in the direction Y is preferably within the above-described range.
  • the non-adhesive overlapping part 6 extends continuously in the longitudinal direction X within the above-described range.
  • Each adhesive of the 1st adhesive agent 2, the 2nd adhesive agent 3, and the 3rd adhesive agent 4 in this embodiment is a hot-melt-type adhesive agent, and is coated using the coater.
  • the adhesive various known adhesives conventionally used for disposable diapers and the like can be used.
  • As a method of coating the adhesive in a stripe shape any of known methods such as gravure, relief, bead, and spray can be selected in addition to the coater method.
  • the application amount of the first adhesive 2, the second adhesive 3, and the third adhesive 4 is preferably 0.1 g / m 2 or more, more preferably 0.3 g / m, from the viewpoint of securing sufficient bonding strength. 2 or more, preferably 5.0 g / m 2 or less, more preferably 3.0 g / m 2 or less, and preferably 0.1 g / m 2 or more and 5.0 g / m 2 or less, more preferably 0.3 g / m 2 or more and 3.0 g / m 2 or less.
  • the amount of each of the adhesives 2, 3, and 4 is determined by calculating the area of the entire arrangement region including the adhesive non-arrangement portion located between the adhesive arrangement portions of the respective adhesives. Determine the total weight of the adhesive.
  • the forming material of each part in the diaper 1 will be described.
  • Various known materials can be used without particular limitation.
  • the surface sheet 12 various liquid-permeable sheet materials such as a nonwoven fabric and an apertured film can be used.
  • the leak-proof sheet 15a a resin film that does not have moisture permeability, a resin film that has micropores and moisture permeability, a nonwoven fabric such as a water-repellent nonwoven fabric, and a laminate of these and other sheets may be used.
  • the exterior nonwoven fabric 15b a nonwoven fabric produced by various manufacturing methods such as an air-through nonwoven fabric, a spunbond nonwoven fabric, a spunlace nonwoven fabric, a needle punched nonwoven fabric, and the like may be used.
  • a synthetic resin such as polyethylene, polypropylene, polyethylene terephthalate, etc., and a sheet or a nonwoven fabric made of a composite material of two or more of these synthetic resins can be used.
  • a vertically long absorbent article comprising a top sheet, an absorbent body and a back sheet, having a longitudinal direction and a width direction perpendicular thereto,
  • the absorbent body has an absorbent core and a core wrap sheet covering the absorbent core
  • the lower core wrap sheet positioned on the non-skin facing surface side of the absorbent core is joined to the non-skin facing surface of the absorbent core via a first adhesive arranged in a stripe shape, and the stripe Bonded to the skin facing surface of the back sheet through a second adhesive arranged in a shape
  • the lower core wrap sheet has a plurality of non-adhesive portions in the width direction that are not adhered to any of the absorbent core and the back sheet, and each of the plurality of non-adhesive portions extends in the longitudinal direction.
  • the non-adhesive portion is such that the first adhesive non-arranged portion where the first adhesive is not arranged and the second adhesive non-arranged portion where the second adhesive is not arranged completely overlap,
  • the non-adhesive part is formed by partially overlapping a first adhesive non-arranged part where the first adhesive is not arranged and a second adhesive non-arranged part where the second adhesive is not arranged.
  • the non-bonding portions are formed on both sides of the first adhesive placement portion where the first adhesive is disposed or the second adhesive placement portion where the second adhesive is disposed in the width direction.
  • the first adhesive placement portion in which the first adhesive is disposed has a shorter placement pitch in the width direction than the second adhesive placement portion in which the second adhesive is disposed, ⁇ 1>
  • the arrangement pitch Pa of the first adhesive arrangement part is preferably 10% or more, more preferably 15% or more, and preferably 85% or less, with respect to the arrangement pitch Pb of the second adhesive arrangement part.
  • the difference between the arrangement pitch Pa of the first adhesive arrangement part and the arrangement pitch Pb of the second adhesive arrangement part is preferably 1 mm or more, more preferably 10 mm or more, and preferably 45 mm or less, more preferably. Is 35 mm or less, preferably 1 mm or more and 45 mm or less, more preferably 10 mm or more and 35 mm or less, the absorbent article according to the above ⁇ 5> or ⁇ 6>.
  • the first adhesive placement portion in which the first adhesive is disposed has a longer length in the width direction than the second adhesive placement portion in which the second adhesive is disposed, ⁇ 1>
  • the length Wa of the first adhesive arrangement part in the width direction is preferably 120% or more, more preferably 150% or more with respect to the length Wb of the second adhesive arrangement part in the width direction.
  • it is 400% or less, More preferably, it is 300% or less, Preferably it is 120 to 400%, More preferably, it is 150 to 300%,
  • the difference between the length Wa of the first adhesive placement portion in the width direction and the length Wb of the second adhesive placement portion in the width direction is preferably 0.5 mm or more, more preferably 1.0 mm. Or more, preferably 3.0 mm or less, more preferably 2.5 mm or less, and preferably 0.5 mm or more and 3.0 mm or less, more preferably 1.0 mm or more and 2.5 mm or less.
  • the first stripe arrangement region including the first adhesive arrangement portion where the first adhesive is arranged and the first adhesive non-arrangement portion where the first adhesive is not arranged is a length in the width direction.
  • the first stripe arrangement region including the first adhesive arrangement portion where the first adhesive is arranged and the first adhesive non-arrangement portion where the first adhesive is not arranged is a length in the longitudinal direction.
  • L1 is the same as the full length L13 of the absorbent core in the longitudinal direction.
  • the length Wa of the first adhesive placement portion in the width direction is preferably 20% or more, more preferably 30% or more, and preferably with respect to the placement pitch Pa of the first adhesive placement portion. 80% or less, more preferably 70% or less, preferably 20% or more and 80% or less, more preferably 30% or more and 70% or less, according to any one of the above items ⁇ 5> to ⁇ 12> Absorbent article.
  • the length Wa of the first adhesive placement portion in the width direction is preferably 1.0 mm or more, more preferably 1.5 mm or more, and preferably 5.0 mm or less, more preferably 4.0 mm or less.
  • the absorbent article according to any one of ⁇ 5> to ⁇ 13> which is preferably 1.0 mm or more and 5.0 mm or less, more preferably 1.5 mm or more and 4.0 mm or less.
  • the width direction length Da of the first adhesive non-arranged portion where the first adhesive is not disposed is preferably 0.5 mm or more, more preferably 1.0 mm or more, and preferably 5.0 mm. Any one of the above ⁇ 5> to ⁇ 14>, more preferably 4.0 mm or less, preferably 0.5 mm or more and 5.0 mm or less, more preferably 1.0 mm or more and 4.0 mm or less.
  • a second stripe arrangement region including a second adhesive arrangement portion where the second adhesive is arranged and a second adhesive non-arrangement portion where the second adhesive is not arranged is the lower portion in the width direction.
  • ⁇ 17> The absorbent article according to ⁇ 16>, wherein a length W2 of the second stripe arrangement region in the width direction is longer than a maximum length W14b of the lower core wrap sheet in the width direction.
  • the second stripe arrangement region including the second adhesive arrangement portion where the second adhesive is arranged and the second adhesive non-arrangement portion where the second adhesive is not arranged is the lower portion in the longitudinal direction. Any one of the above items ⁇ 1> to ⁇ 17>, preferably over the entire length of the side core wrap sheet, more preferably extending outward in the longitudinal direction than the lower core wrap sheet.
  • the absorbent article as described. ⁇ 19> The length L2 of the second stripe arrangement region in the longitudinal direction is preferably longer than the total length L14b of the lower core wrap sheet in the longitudinal direction, and more preferably equal to the total length of the back sheet in the longitudinal direction.
  • the absorbent article according to ⁇ 18> further preferably equal to the total length of the absorbent article in the longitudinal direction.
  • the length Wb in the width direction of the second adhesive arrangement portion where the second adhesive is arranged is preferably 2.5% or more, more preferably, relative to the arrangement pitch Pb of the second adhesive arrangement portion. Is 3% or more, preferably 15% or less, more preferably 10% or less, and preferably 2.5% or more and 15% or less, more preferably 3% or more and 10% or less.
  • the width direction length Wb of the second adhesive arrangement portion where the second adhesive is arranged is preferably 0.5 mm or more, more preferably 1.0 mm or more, and preferably 3.0 mm or less. More preferably, it is 2.5 mm or less, preferably 0.5 mm or more and 3.0 mm or less, more preferably 1.0 mm or more and 2.5 mm or less, any one of the above ⁇ 5> to ⁇ 20> Absorbent articles.
  • the length Db in the width direction of the second adhesive non-arranged portion where the second adhesive is not disposed is preferably 3 mm or more, more preferably 5 mm or more, and preferably 50 mm or less, more preferably 40 mm.
  • the absorbent article according to any one of the above items ⁇ 5> to ⁇ 21> which is preferably 3 mm to 50 mm, more preferably 5 mm to 40 mm.
  • the length W5 of the non-adhesive part in the width direction is preferably 20% or more with respect to the length Da of the first adhesive non-arrangement part 25 in which the first adhesive is not arranged. More preferably, it is 40% or more, preferably 100% or less, more preferably 80% or less, and preferably 20% or more and 100% or less, more preferably 40% or more and 80% or less.
  • the sum total of the lengths W5 of the non-adhesive portions in the width direction is preferably relative to the sum of the lengths Db in the width direction of the second adhesive non-arranged portions 35 where the second adhesive is not disposed. 15% or more, more preferably 25% or more, preferably 75% or less, more preferably 65% or less, and preferably 15% or more and 75% or less, more preferably 25% or more and 65% or less.
  • the absorbent article according to any one of ⁇ 1> to ⁇ 23>.
  • the length W5 of the non-adhesive portion in the width direction is preferably 0.5 mm or more, more preferably 1.0 mm or more, and preferably 4.0 mm or less, more preferably 2.5 mm or less.
  • the absorbent article according to any one of ⁇ 1> to ⁇ 24> which is preferably 0.5 mm or more and 4.0 mm or less, more preferably 1.0 mm or more and 2.5 mm or less.
  • the non-adhesive portion 5 preferably extends continuously over the entire length of the absorbent body in the longitudinal direction, and more preferably equal to the total length of the absorbent article.
  • the second adhesive has different adhesive strength when wet between the second adhesive disposed in the central region in the width direction and the second adhesive disposed on both sides of the central region.
  • the back sheet includes a leak-proof sheet and an exterior nonwoven fabric that covers a non-skin facing surface of the leak-proof sheet, Between the leak-proof sheet and the exterior nonwoven fabric are joined via a third adhesive arranged in a stripe shape, Between the leak-proof sheet and the exterior nonwoven fabric, a third adhesive placement portion in which the third adhesive is disposed, and a third adhesive non-placement portion in which the third adhesive is not disposed, Alternately in the width direction and each extending in the longitudinal direction, The absorption according to any one of ⁇ 1> to ⁇ 27>, wherein the third adhesive non-arranged portion and the non-adhered portion of the lower core wrap sheet overlap in a plan view of the absorbent article. Sex goods.
  • the non-adhesive overlap portion where none of the first adhesive, the second adhesive, and the third adhesive is present has a length W6 of the non-adhesive overlap portion in the width direction that is the non-adhesion in the width direction.
  • the length W5 is preferably 20% or more, more preferably 40% or more, and preferably 100% or less, more preferably 80% or less, and preferably 20% or more and 100% or less,
  • the length W6 of the non-adhesive overlapping portion in the width direction is the third in the width direction.
  • it is 20% or more, more preferably 30% or more, preferably 100% or less, more preferably 70% or less, and preferably 20% or more with respect to the length Dc of the adhesive non-arranged part.
  • the non-adhesive overlap portion where none of the first adhesive, the second adhesive and the third adhesive is present has a length W6 of the non-adhesive overlap portion in the width direction, preferably 0.5 mm or more, More preferably, it is 1.0 mm or more, preferably 3.5 mm or less, more preferably 2.0 mm or less, and preferably 0.5 mm or more and 3.5 mm or less, more preferably 1.0 mm or more and 2.0 mm.
  • the non-adhesive overlap portion where none of the first adhesive, the second adhesive, and the third adhesive is present may extend continuously over the entire length of the absorber in the longitudinal direction.
  • the arrangement pitch Pc of the third adhesive arrangement part is preferably 5% or more, more preferably 10% or more with respect to the arrangement pitch Pb of the second adhesive arrangement part where the second adhesive is arranged. Any of the above ⁇ 28> to ⁇ 34>, preferably 60% or less, more preferably 30% or less, and preferably 5% or more and 60% or less, more preferably 10% or more and 30% or less. 2.
  • the absorbent article according to any one of ⁇ 36>. ⁇ 38>
  • the difference between the length Wb in the width direction of the second adhesive placement portion where the second adhesive is disposed and the length Wc of the third adhesive placement portion in the width direction is preferably 0.5 mm or more. More preferably, the thickness is 1.0 mm or more, preferably 4.0 mm or less, more preferably 3.0 mm or less, and preferably 0.5 mm or more and 4.0 mm or less, more preferably 1.0 mm or more and 3.
  • the total area of the third adhesive placement portion is preferably 25% or more with respect to the area of the third stripe placement region including the third adhesive placement portion and the third adhesive non-placement portion, more preferably 30% or more, preferably 50% or less, more preferably 40% or less, preferably 25% or more and 50% or less, more preferably 30% or more and 40% or less, ⁇ 28>
  • the length W3 of the third stripe arrangement region in the width direction is the width direction of the absorber.
  • the absorbent article according to any one of ⁇ 28> to ⁇ 39> which is preferably longer than a width, and more preferably the same as the length W15a of the leak-proof sheet.
  • the length L3 of the third stripe arrangement region in the longitudinal direction is the total length of the absorber in the longitudinal direction.
  • the arrangement pitch Pc of the third adhesive arrangement portions in the width direction is preferably 1.5 mm or more, more preferably 2.0 mm or more, and preferably 8.0 mm or less, more preferably 6.0 mm or less.
  • the absorbent article according to any one of ⁇ 28> to ⁇ 41> which is preferably 1.5 mm or more and 8.0 mm or less, more preferably 2.0 mm or more and 6.0 mm or less.
  • the length Wc of the third adhesive placement portion in the width direction is preferably 15% or more, more preferably 20% or more, and preferably with respect to the placement pitch Pc of the third adhesive placement portion.
  • the length Wc of the third adhesive placement portion in the width direction is preferably 0.5 mm or more, more preferably 1.0 mm or more, and preferably 4.0 mm or less, more preferably 3.0 mm or less.
  • the back sheet includes a leak-proof sheet and an exterior nonwoven fabric that covers a non-skin facing surface of the leak-proof sheet,
  • the leak-proof sheet and the exterior nonwoven fabric are joined via a third adhesive arranged in a spiral shape, Between the leak-proof sheet and the exterior nonwoven fabric, there are a third adhesive placement portion in which the third adhesive is disposed and a third adhesive non-placement portion in which the third adhesive is not disposed.
  • a third adhesive placement portion in which the third adhesive is disposed
  • a third adhesive non-placement portion in which the third adhesive is not disposed.
  • the third adhesive non-arranged part and the non-adhered part of the lower core wrap sheet overlap with each other in any one of the items ⁇ 1> to ⁇ 27>, in the plan view of the absorbent article.
  • Absorbent article Absorbent article.
  • the third spiral placement region including the third adhesive placement portion and the third adhesive placement portion is such that the length of the third spiral placement region in the width direction is the maximum length of the absorber in the width direction.
  • the absorbent article according to ⁇ 45> which is preferably longer than the length, and more preferably the same as the length of the leak-proof sheet 15a in the width direction.
  • the length Ls of the third spiral placement region in the longitudinal direction is the total length of the absorber in the longitudinal direction.
  • the absorbent article according to ⁇ 45> or ⁇ 46> which is preferably longer, and more preferably the same as the length L15a of the leak-proof sheet 15a in the longitudinal direction.
  • the arrangement pitch Pcs of the third adhesive arrangement part in the width direction is preferably 4 mm or more, more preferably 8 mm or more, preferably 40 mm or less, more preferably 30 mm or less, and preferably 4 mm or more and 40 mm.
  • the length Wcs of the third adhesive placement portion in the width direction is preferably 20% or more, more preferably 30% or more, with respect to the placement pitch Pcs of the third adhesive placement portion 40.
  • the length Wcs of the third adhesive arrangement portion in the width direction is preferably 3 mm or more, more preferably 4 mm or more, and preferably 20 mm or less, more preferably 15 mm or less, and preferably 3 mm or more and 20 mm.
  • the coating amount of one or both of the first adhesive and the second adhesive is preferably 0.1 g / m 2 or more, more preferably 0.3 g / m 2 or more, and preferably 5. 0 g / m 2 or less, more preferably 3.0 g / m 2 or less, preferably 0.1 g / m 2 or more and 5.0 g / m 2 or less, more preferably 0.3 g / m 2 or more and 3.0 g.
  • the coating amount of the third adhesive is preferably 0.1 g / m 2 or more, more preferably 0.3 g / m 2 or more, and preferably 5.0 g / m 2 or less, more preferably 3.0 g. / M 2 or less, preferably 0.1 g / m 2 or more and 5.0 g / m 2 or less, more preferably 0.3 g / m 2 or more and 3.0 g / m 2 or less, ⁇ 28> to The absorbent article according to any one of ⁇ 50>.
  • the absorbent capacity of the absorber can be improved.

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

Abstract

Un article absorbant (1) selon la présente invention comprend : une feuille de surface (12); un absorbeur (11) ayant un noyau absorbant (13) et une feuille d'enveloppe de noyau (14) qui recouvre le noyau absorbant (13); et une feuille de surface arrière (15). Une feuille d'enveloppe de noyau inférieure (14b) qui est positionnée sur le côté non tourné vers la peau du noyau absorbant (13) est jointe au côté non tourné vers la peau du noyau absorbant (13) par l'intermédiaire d'un premier adhésif (2) disposé selon un motif en bandes, et jointe au côté faisant face à la peau de la feuille de surface arrière (15) par l'intermédiaire d'un second adhésif (3) agencé selon un motif en bandes. La feuille d'enveloppe de noyau inférieure (14b) présente, dans la direction de la largeur (Y) de l'article, une pluralité de parties non adhésives (5) qui ne sont pas jointes au noyau absorbant (13) ou la feuille de surface arrière (15), et chacune des parties non adhésives (5) s'étend dans la direction longitudinale (X) de l'article.
PCT/JP2017/045022 2016-12-28 2017-12-15 Article absorbant WO2018123637A1 (fr)

Priority Applications (2)

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CN201780080073.8A CN110099655B (zh) 2016-12-28 2017-12-15 吸收性物品
RU2019123581A RU2743032C2 (ru) 2016-12-28 2017-12-15 Впитывающее изделие

Applications Claiming Priority (2)

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JP2016-255042 2016-12-28
JP2016255042A JP6744211B2 (ja) 2016-12-28 2016-12-28 吸収性物品

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WO2018123637A1 true WO2018123637A1 (fr) 2018-07-05

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JP (1) JP6744211B2 (fr)
CN (1) CN110099655B (fr)
RU (1) RU2743032C2 (fr)
TW (1) TWI752139B (fr)
WO (1) WO2018123637A1 (fr)

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WO2002069873A1 (fr) * 2001-03-03 2002-09-12 Daio Paper Corporation Couche en papier
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US7618404B2 (en) * 2005-06-23 2009-11-17 The Procter & Gamble Company Disposable absorbent article having doubled side flaps and backsheet strips
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