WO2017086132A1 - 吸収性物品 - Google Patents

吸収性物品 Download PDF

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Publication number
WO2017086132A1
WO2017086132A1 PCT/JP2016/082179 JP2016082179W WO2017086132A1 WO 2017086132 A1 WO2017086132 A1 WO 2017086132A1 JP 2016082179 W JP2016082179 W JP 2016082179W WO 2017086132 A1 WO2017086132 A1 WO 2017086132A1
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WO
WIPO (PCT)
Prior art keywords
joint
central
absorbent article
region
sheet
Prior art date
Application number
PCT/JP2016/082179
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English (en)
French (fr)
Japanese (ja)
Inventor
晃士 芥川
美奈 富田
亜由香 南崎
岳志 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 CN201680049961.9A priority Critical patent/CN107920940A/zh
Publication of WO2017086132A1 publication Critical patent/WO2017086132A1/ja

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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
    • A61F13/511—Topsheet, i.e. the permeable cover or layer facing the skin

Definitions

  • the present invention relates to absorbent articles such as disposable diapers, sanitary napkins, and incontinence pads.
  • an uneven surface formed by embossing or the like is known on the side of the skin directed to the skin side of the wearer.
  • embossing or the like is known on the side of the skin directed to the skin side of the wearer.
  • by forming an uneven shape on the skin side of the topsheet it is also known to reduce the contact area with the skin of the wearer to improve air permeability and reduce stickiness to the skin. Yes.
  • the uneven shape of the surface sheet has high shape retention.
  • the texture (feel) is deteriorated, or the drawability of the liquid from the surface of the surface sheet to the absorber side is lowered.
  • Patent Documents 1 and 2 describe providing a plurality of concavo-convex regions with different shapes and heights of convex portions on a top sheet of a disposable diaper.
  • an absorbent article such as a disposable diaper is deformed so that both sides of the crotch part arranged between the crotch of the wearer are along the left and right thighs at the time of wearing from the viewpoint of fit and prevention of liquid leakage. Is desired.
  • the unevenness area formed on the topsheet has high rigidity, it is easy for the wearer to feel uncomfortable around the legs.
  • the rigidity of the concavo-convex area formed on the topsheet is low, the shape retention of the concavo-convex shape formed in the concavo-convex area is lowered.
  • the present invention provides an absorbent article comprising a top sheet made of a composite sheet, a back sheet, and an absorber disposed between the two sheets.
  • the composite sheet has a first direction along the article longitudinal direction and a second direction along the article width direction, and the laminated first sheet and second sheet are joined to each other at a plurality of joints.
  • seat protrudes in the direction away from a 2nd sheet
  • the composite sheet has a central region in which the convex portions are formed in different patterns and a pair of side regions located on both sides of the central region. In the joint portion in the side region, the synthetic resin constituting one or both of the constituent fibers of the first sheet and the second sheet is in a melted and solidified state, and all or one of the joint portions in the side region.
  • the part has a through hole.
  • FIG. 1 is a plan view showing a basic configuration of a disposable diaper as an embodiment of the absorbent article of the present invention.
  • 2 is a cross-sectional view taken along line II-II in FIG.
  • FIG. 3 is a plan view showing the top sheet of the disposable diaper of the first embodiment.
  • FIG. 4 is an enlarged perspective view showing a part of the central region of the composite sheet used in the first embodiment.
  • FIG. 5 is an enlarged perspective view showing a part of the side region of the composite sheet used in the first embodiment.
  • 6 is a cross-sectional view taken along the line Ve-Ve in FIG.
  • FIG. 7 is an enlarged plan view showing a part of the central region of the composite sheet used in the first embodiment.
  • 8A is a sectional view taken along the line Va-Va in FIG.
  • FIG. 8B is a sectional view taken along the line Vb-Vb in FIG. 7
  • FIG. 8C is a sectional view taken along the line Vc-Vc in FIG. is there.
  • FIG. 9 is an enlarged plan view showing the vicinity of the boundary between the central region and the side region of the composite sheet used in the first embodiment.
  • FIG. 10 is an enlarged plan view showing a part of the side region of the composite sheet used in the first embodiment.
  • 11 is a cross-sectional view taken along the line Vd-Vd in FIG.
  • the present invention relates to an absorbent article that can eliminate the disadvantages of the above-described conventional technology.
  • FIGS. 1 and 2 show a basic structure of a disposable diaper 100 (hereinafter also simply referred to as diaper 100), which is an embodiment of the absorbent article of the present invention.
  • the diaper 100 includes a liquid-permeable top sheet 12, a liquid-impermeable back sheet 13, and an absorber 14 disposed between the sheets 12 and 13.
  • the liquid impermeability is a concept including poor liquid permeability, and includes cases where the back sheet 13 is made of a water-repellent sheet or the like in addition to the case where the liquid does not pass through the liquid at all.
  • the diaper 100 has an article longitudinal direction Xa which is a direction coinciding with the wearer's front-rear direction when worn, and an article width orthogonal to the article longitudinal direction Xa in a state where the diaper 100 is expanded in a planar shape as shown in FIG. Direction Ya. Further, the diaper 100 includes, in the article longitudinal direction Xa, an abdominal side A that is disposed on the abdomen side of the wearer when worn, a back side B that is disposed on the back side of the wearer when worn, and an abdominal side part A. The crotch part C is located between the back part B and the back part B.
  • the diaper 100 is an unfolded disposable diaper. Fastening tapes 17 are provided on both side edges of the back side B, and a landing zone 18 that fastens the fastening tape 17 to the outer surface of the abdominal side A. Is provided.
  • the absorbent body 14 in the diaper 100 includes an absorbent core 14a and a core wrap sheet 14b that wraps the absorbent core 14a.
  • the absorptive core 14a can be comprised from the laminated fiber body of liquid absorbing fibers, such as a pulp fiber, for example, and the mixed fiber body of a liquid absorbing fiber and a water absorbing polymer.
  • 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.
  • the core wrap sheet 14b for example, tissue paper or a water-permeable nonwoven fabric is used.
  • One core wrap sheet 14b may wrap the entire absorbent core 14a, or a combination of two or more sheets may wrap the absorbent core 14a.
  • the back sheet 13 a liquid-impermeable or water-repellent resin film, a laminate sheet of a resin film and a nonwoven fabric, or the like is used.
  • Sheets 15 for forming a three-dimensional gather having elastic members 15a are arranged on both sides of the article longitudinal direction Xa in the diaper 100, and the skin of the wearer is placed on the crotch portion C in a worn state by contraction of the elastic members 15a. A three-dimensional gather standing up toward the side is formed.
  • the leg elastic member 16 is disposed in an extended state at a portion disposed around the leg in the crotch C. Due to the contraction, the leg crotch C fits around the wearer's leg in the worn state. Leg gathers that improve
  • the surface sheet 12 in the disposable diaper 100 of 1st Embodiment is comprised from the composite sheet 10 shown in FIG.
  • the composite sheet 10 includes a first direction X along the longitudinal direction (article longitudinal direction) Xa of the diaper 100 and a second direction Y along the width direction (article width direction) Ya of the diaper 100.
  • the composite sheet 10 includes a central region M in which the convex portions 4 are formed in different patterns and a pair of side regions S and S located on both sides of the central region M. Yes.
  • the central region M is located in the central portion of the diaper 100 in the width direction (article width direction) Ya, and the pair of side regions S and S are formed outside both side edges along the second direction Y of the central region M.
  • the central region M having the convex portions 4 formed in different patterns and the pair of side regions S, S on both sides thereof are preferably formed at least in the crotch portion C in the longitudinal direction Xa of the diaper 100, It is preferable that it is formed from the crotch part C to one or both of the abdominal part A and the dorsal part B, or the entire length of the absorbent body 14, and further to the entire length of the diaper 100. Preferably it is.
  • FIG. 4 is an enlarged perspective view showing a part of the central region M of the composite sheet 10
  • FIG. 5 is an enlarged perspective view showing a part of the side region S of the composite sheet 10. It is shown.
  • the side regions S are formed at positions symmetrical with respect to a center line (not shown) along the longitudinal direction Xa of the diaper 100, and irregularities are formed in each side region S in the pattern shown in FIG. ing.
  • the composite sheet 10 includes a plurality of laminated first sheets 1 and 2 that are partially joined by embossing in both the central region M and the side region S. Are formed, and the laminated first sheet and second sheet are joined to each other at a plurality of joints. And in any of the center area
  • the composite sheet 10 has a substantially flat surface on the second sheet 2 side in both the central region M and the side region S, and has unevenness on the first sheet 1 side.
  • the first sheet 1 and the second sheet 2 are made of sheet material.
  • the sheet material for example, a fiber sheet such as a nonwoven fabric, a woven fabric, and a knitted fabric, a film, and the like can be used. From the viewpoint of touch and the like, it is preferable to use a fiber sheet, and it is particularly preferable to use a nonwoven fabric.
  • seat 2 may be the same, or may differ.
  • nonwoven fabric used when the nonwoven fabric is used as the sheet material constituting the first sheet 1 and the second sheet 2 examples include air-through nonwoven fabric, spunbond nonwoven fabric, spunlace nonwoven fabric, meltblown nonwoven fabric, resin bond nonwoven fabric, and needle punch nonwoven fabric. It is done. A laminate obtained by combining two or more of these nonwoven fabrics, or a laminate obtained by combining these nonwoven fabrics and a film can also be used. Among these, it is preferable to use an air-through nonwoven fabric or a spunbonded nonwoven fabric.
  • the basis weight of the nonwoven fabric used as the sheet material constituting the first sheet 1 and the second sheet 2 is preferably 10 g / m 2 or more, more preferably 15 g / m 2 or more, and preferably 40 g / m 2 or less. More preferably, it is 35 g / m 2 or less.
  • the basis weight of the nonwoven fabric is preferably 10 g / m 2 or more and 40 g / m 2 or less, more preferably 15 g / m 2 or more and 35 g / m 2 or less.
  • thermoplastic resin examples include polyolefins such as polyethylene and polypropylene, polyesters such as polyethylene terephthalate, polyamides such as nylon 6 and nylon 66, polyacrylic acid, polymethacrylic acid alkyl ester, polyvinyl chloride, and polyvinylidene chloride. These resins can be used alone or as a blend of two or more. Further, it can be used in the form of a composite fiber such as a core-sheath type or a side-by-side type.
  • a plurality of central continuous convex portions 40 extending continuously in the second direction Y are formed at a certain distance in the first direction X. .
  • a first joint portion 31 and a second joint portion 32 are formed in the central region M of the composite sheet 10.
  • the first sheet 1 is formed in the pair of side regions S, S of the composite sheet 10 so as to protrude in a direction away from the second sheet 2 at a portion other than the third joint portion 33.
  • the side first convex portions 41 ′ are formed in a dotted shape in plan view, and are formed in a state of being dispersed in each of the first direction X and the second direction Y.
  • the side first convex portion 41 ′ is formed in a pattern different from the central continuous convex portion 40 in the central region M and the central first convex portion 41 and the central second convex portion 42 constituting the central continuous convex portion 40.
  • the expression that the pattern of the convex part is different includes any of the case where only the arrangement of the convex part is different, the case where the form of the convex part is different, and the case where both are different.
  • the aspect in which the arrangement of the convex portions is different includes a case where the distance between the convex portions is different.
  • the aspect from which the form of a convex part differs also includes the case where the planar view shape of a convex part differs.
  • the arrangement and form of the protrusions are different between the central region M and the pair of side regions S, S.
  • each of the third joint portions 33 in the side region S the constituent resin of one or both constituent fibers of the first sheet 1 and the second sheet 2 is in a melted and solidified state.
  • the first sheet 1 and the second sheet 2 are both densified as compared to other portions (portions other than the joint portion). That is, the 3rd junction part 33 in the composite sheet 10 is a heat fusion part formed by heating and pressurizing the 1st sheet 1 and the 2nd sheet 2 integrally, and the composition of one or both sheets Both sheets are bonded to each other by melting the constituent resin of the fiber and subsequent solidification.
  • region M are also the same, and it is in the state which the constituent resin of the constituent fiber of one or both of the 1st sheet
  • first and second joint portions 31 and 32 in the composite sheet 10 are also heat-sealed portions formed by integrally heating and pressing the first sheet 1 and the second sheet 2, and Both sheets are bonded to each other by melting and subsequently solidifying the constituent resins of the constituent fibers of both sheets.
  • first to third joint portions 31, 32, and 33 it is preferable that both the first sheet 1 and the second sheet 2 are melted and solidified.
  • the joint between the first sheet 1 and the second sheet 2 is a joining means other than heat fusion, for example, an adhesive such as a hot melt adhesive. It may be formed by.
  • the third joint portion 33 in the side region S is a heat-sealed portion, and a part of the third joint portion 33a of the third joint portion 33 has a through hole 33c.
  • the through-hole 33 c penetrates the composite sheet 10 in the thickness direction at the joint portion 33 a.
  • the through hole 33c is formed in the central portion of the joint portion 33a, and one or both of the first sheet 1 and the second sheet 2 are melted around the through hole 33c in the plan view of the composite sheet 10.
  • the solidified portion exists in a ring shape.
  • the composite sheet 10 which comprises the surface sheet 12 has the center area
  • a part of the third joint portion 33 formed in the pair of side regions S and S is the joint portion 33a having the through hole 33c, the pair of side regions S and S in the crotch C
  • the pair of side regions S, S are easily bent along the longitudinal direction (article longitudinal direction) Xa of the diaper 100 as compared with the case where all the third joint portions 33 formed on the diaper 100 do not have the through holes 33c.
  • both side portions of the diaper 100 in which the side region S of the composite sheet 10 is arranged are easily bent along the wearer's legs, and the wearer's legs are less likely to be uncomfortable.
  • the through-hole 33c is formed in the 3rd junction part 33 which is a heat sealing
  • WHEREIN On both sides in the crotch C of the diaper 100, it is center direction from right and left When the compression force is applied, the shape of the third joint portion 33 and the three-dimensional shape of the side first convex portion 41 ′ are maintained relatively stably.
  • the diaper 100 of 1st Embodiment does not give an uncomfortable feeling to a wearer's leg periphery, and the surface sheet 12 is excellent in the shape retention property of side 1st convex part 41 ', and is excellent also in air permeability.
  • the shape, size, and arrangement of the side first convex portion 41 ′ are mainly determined by the shape, size, and arrangement of the third joint portion 33.
  • FIG. 7 shows an enlarged plan view of the central region M of the composite sheet 10 shown in FIG. 8A to 8C are a cross-sectional view taken along the line Va-Va, a cross-sectional view taken along the line Vb-Vb, and a cross-sectional view taken along the line Vc-Vc in FIG.
  • a central continuous convex portion 40 that extends continuously in the second direction Y is spaced a certain distance in the first direction X.
  • a plurality of lines are formed.
  • the portion 41 and the central second convex portion 42 having a height lower than that of the central first convex portion 41 are connected to each other.
  • a convex part is connected that two adjacent convex parts are not separated by a joint part, and a part of one convex part forms a part of the other convex part. And a part of the other convex part forms a part of the one convex part.
  • the central first convex portion 41 and the central second convex portion 42 constituting the central continuous convex portion 40 preferably have a cavity at least on the back side of the central first convex portion 41, and have a cavity on each back side,
  • the hollow of the back surface of the center 1st convex part 41 and the cavity of the back surface of the center 2nd convex part 42 continue, and the continuous hollow part extended continuously along the 2nd direction Y on the back side of the center continuous convex part 40 More preferably, 40V is formed.
  • the central first convex portion 41 and the central second convex portion 42 constituting the central continuous convex portion 40 are both substantially circular in shape in plan view. Further, the central first convex portion 41 and the central second convex portion 42 have a shape having a top portion in the cross section in any direction of the first direction X and the second direction Y.
  • a non-embossed region N that extends in the second direction Y and does not have a joint portion continuously in the second direction Y, and in the second direction Y.
  • Embossed regions E that extend and have joints formed in a regular pattern are alternately formed in the first direction X.
  • a first joint 31 and a second joint 32 are formed as joints formed by partially joining the laminated first sheet 1 and second sheet 2 by embossing. ing.
  • first bonding portion 31 and the second bonding portion 32 have different arrangement positions in the second direction Y as shown in FIG. Further, the first joint portion 31 and the second joint portion 32 are also different in lengths L1 and L2 along the second direction Y.
  • Each of the first joint portions 31 has a rectangular shape in plan view, and each side of the rectangle coincides with the first direction X or the second direction Y.
  • the second joint portion 32 has a substantially square shape in plan view, and each side of the square coincides with the first direction X or the second direction Y.
  • the first joint portions 31 having a rectangular shape are arranged in a line at intervals along the second direction Y with the long sides thereof aligned with the first direction X.
  • first joint portion row R1 along the second direction Y is formed.
  • the second joint portions 32 are arranged in a line at intervals along the second direction Y, with one of two sides orthogonal to each other coinciding with the second direction Y and the other side with the first direction X. ing.
  • the second joint row R2 along the second direction Y is formed.
  • the arrangement interval of the first joints 31 in the second direction Y is constant.
  • the arrangement intervals of the second joint portions 32 in the second direction Y have two types of intervals, and alternately have wide portions and narrow intervals. .
  • the arrangement positions of the first joints 31 when viewed along the second direction Y are all the same.
  • the arrangement positions of the second joints 32 when viewed along the second direction Y are all the same.
  • Each embossed region E includes one first joint row R1 and two second joint rows R2 located on both sides in the first direction X, as shown in FIG.
  • a total of four second joints 32 constituting two second joint rows R2 are formed around the first joint 31.
  • the four corners of the first joint portion 31 are arranged close to each other with the corners facing each other. Accordingly, a group of joint portions 30 including one first joint portion 31 and four second joint portions 32 located around the first joint portion 31 is formed.
  • a plurality of similar joint groups 30 are formed along the second direction Y at regular intervals.
  • the first joint portion 31 and the second joint portion 32 are formed in the above-described manner, and the portion corresponding to the non-embossed region N in the first sheet 1 when the composite sheet 10 is manufactured. 7 or the embossed region E in the central region M of the composite sheet 10 by pressing a portion corresponding to a portion between the first joint portions 31 from the back surface side or sucking from the front surface side.
  • a central continuous convex portion 40 including a central first convex portion 41, a central third convex portion 43, and the like having a planar view shape and a cross-sectional shape as shown in FIG. 8 are formed.
  • the central continuous convex portion 40 of the central region M of the composite sheet 10 used in the first embodiment extends continuously in the second direction Y and has a portion whose width is regularly narrowed in the second direction Y. Yes. Specifically, as shown in FIG. 7, a central first convex portion 41 is formed between a pair of first joint portions 31 that are opposed to each other with the non-embossed region N interposed therebetween, and are opposed to each other with the non-embossed region N interposed therebetween.
  • a central second convex portion 42 is formed in a region surrounded by a total of four second joint portions 32 composed of two pairs of second joint portions 32, and the center in the direction along the first direction X is the center.
  • the length L42 of the central second convex portion 42 is shorter than the length L41 of the first convex portion 41.
  • the central continuous convex portion 40 is a constricted portion whose width (length in the first direction X) is narrower than that of the central first convex portion 41 in the central continuous convex portion 40. .
  • the groove portion 5 is lower on the embossed region E in the central region M than the central continuous convex portions 40 on both sides sandwiching the non-embossed region N (see FIG. 4). Moreover, between the side 1st convex part 41 'in the side area
  • the groove part 5 between the center continuous convex parts 40 continues with the recessed part 5S formed between the convex parts of the side area
  • “Continuous” means that the space in the groove 5 and the space in the recess 5S communicate with each other in the planar direction of the composite sheet 10. Thereby, the liquid such as urine supplied onto the central region M in the crotch part C and the like is guided to the side region S with the groove portion 5 serving as a liquid guide path, and the liquid is also transferred from the side region S to the absorber 14. It can be absorbed, and uniform absorption of the excrement such as urine from the entire area of the absorber 14 can be promoted.
  • the recess 5S that is continuous with the groove 5 between the central continuous protrusions 40 preferably includes a space on the joint 33a having the through-hole 33c from the viewpoint of improving liquid absorbability and preventing leakage.
  • the composite sheet 10 used for 1st Embodiment is the discontinuous center 3rd convex part 43 by which the circumference
  • FIG. have.
  • the central third convex portion 43 has a shape having a top portion in the cross section in any of the first direction X and the second direction Y.
  • the central third convex portion 43 is lower than the central first convex portion 41.
  • the center third convex portion 43 has the cavity 43V on the back side thereof, but may not have such a cavity 43V.
  • a plurality of the central third convex portions 43 are linearly arranged in a row at a constant distance along the second direction Y to form the central third convex portion row. is doing.
  • a plurality of the central second convex portions 42 are also linearly arranged in a row at a certain distance along the second direction Y to constitute a central second convex portion row.
  • the central second convex portion 42 and the central third convex portion 43 are formed at the same position in the second direction Y. More specifically, the central second convex portions 42 and the central third convex portions 43 are arranged alternately and linearly along the first direction X.
  • the central third convex portion 43 is positioned between the central first convex portions 41, 41 in the first direction X.
  • the arrangement position in the first direction X is an arrangement position when only the position in the first direction X is viewed ignoring the position in the second direction Y. Furthermore, as shown in FIG. 7, when attention is paid to the fourth convex portion 44 in addition to the central second convex portion 42 and the central third convex portion 43, these three types of convex portions are the central second convex portion 42 and The 4th convex part 44, the center 3rd convex part 43, and the 4th convex part 44 are arrange
  • the upper surface of the fourth convex portion 44 is generally flat.
  • the fourth convex portion 44 is literally a “convex portion”, the fourth convex portion 44 is relatively more than any of the central first and second convex portions 41, 42 constituting the central continuous convex portion 40. Since the height is relatively low and the height is relatively lower than that of the central third convex portion 43, the concave portions are relatively viewed from these convex portions.
  • the central region M of the composite sheet 10 used in the present embodiment includes the first central convex portion 41, the central second convex portion 42, the central third convex portion 43, and the fourth portion described above on the first sheet 1 that constitutes the central region M.
  • a convex portion 44 is formed.
  • the height of the fourth convex portion 44 is lower than any of the central first convex portion 41, the central second convex portion 42, and the central third convex portion 43.
  • FIG. 10 shows an enlarged plan view of the side region S of the composite sheet 10 shown in FIG. 11 is a cross-sectional view taken along the line Vd-Vd in FIG. 6 is a sectional view taken along the line Ve-Ve in FIG.
  • the side region S of the composite sheet 10 has a plurality of first direction joint rows Rx in which the third joint portions 33 are arranged in series in the first direction X in the second direction Y.
  • the plurality of third joint portions 33 have a plurality of second direction joint portion rows Ry arranged in series in the second direction Y in the first direction X.
  • a plurality of first direction joint rows Rx in which the third joints 33 are arranged at equal intervals along the first direction X are formed in the second direction Y.
  • the first direction joint portion row Rx formed in a plurality of rows in the second direction Y includes two adjacent rows in which the arrangement positions of the third joint portions 33 in the first direction X coincide, and the two rows are the first Other adjacent two rows having different arrangement positions of the third joint portions 33 in the direction X are alternately provided in the second direction Y.
  • the second direction joint portion row Ry in which the third joint portions 33 are regularly arranged along the second direction Y at two kinds of intervals La and Lb is provided in the first direction X. A plurality of rows are formed.
  • the second direction joint line Ry includes a first distance La and a second distance Lb wider than the first distance La as the distance between the third joints 33 in the second direction Y.
  • the plurality of third joint portions 33 in the second direction joint portion row Ry are intermittently arranged in the second direction Y so as to have these two kinds of intervals alternately in the second direction Y. ing.
  • the plurality of third joint portions 33 constituting each second direction joint portion row Ry have the same length and arrangement position in the first direction X, and are adjacent to each other in the first direction X.
  • a gap having a constant width W is formed between Ry.
  • the second direction joint portion rows Ry formed in a plurality of rows in the first direction X have the arrangement positions of the third joint portions 33 in the second direction Y every other row, and are adjacent to each other in the second direction.
  • the arrangement positions of the third joint portions 33 in the second direction Y are different from each other between the joint portion rows Ry.
  • the arrangement positions of the third joint portions 33 in the second direction Y are mutually as the second direction joint portion rows Ry.
  • Different second direction first joint rows Ry1 and second direction second joint rows Ry2 are alternately formed in the first direction X, and the arrangement position of the third joint 33 in the second direction Y is as follows.
  • the other second direction joint row Ry is interposed between the third joints 33 adjacent to each other at the second interval Lb.
  • a pair of third joint portions 33 adjacent to each other at the first interval La is located.
  • each of the second-direction joint rows Ry includes a pair of joints 34 including a pair of third joints 33 that are arranged in the second direction Y at a first interval La.
  • the side first convex portion 41 ′ is intermittently disposed at an interval Lb that is twice or more the first interval La, and the side first convex portion 41 ′ is located between the adjacent joint pairs 34 and 34 in the second direction Y. Is formed.
  • the joint portion pair 34 includes a pair of third joint portions 33 that are adjacent to each other at the narrowest interval La in the second direction joint portion row Ry.
  • the third joint portion 33 is formed in the above-described manner, and a region surrounded by a total of six third joint portions 33 in the first sheet 1 when the composite sheet 10 is manufactured. Is pressed from the back side or sucked from the front side, and the like in the side region S of the composite sheet 10 in a plan view shape and a cross-sectional side as shown in FIGS. Many 1st convex parts 41 'are formed.
  • the side region S of the composite sheet 10 in the first embodiment is a second direction joint portion row of the first direction joint portion row Rx and the second direction joint portion row Ry described above.
  • Ry includes the maximum proportion joint row Rym in which the proportion of the joint portion 33a having the through hole 33c is the highest.
  • the second direction joint portion row Ry includes the maximum proportion joint portion row Rym
  • the side region S of the composite sheet 10 is arranged easily when the diaper 100 is worn because the diaper 100 is easily bent along the width direction (the article width direction).
  • the both side portions of the formed diaper 100 are easy to bend along the curved shape of the wearer's leg, and the fit to the leg is improved, so that the wearer's leg is less likely to be uncomfortable.
  • the “maximum proportion joint line” is an observation of a rectangular measuring piece having a length of 20 mm in the first direction and a length of 100 mm in the second direction, which is arbitrarily cut out from each side region S of one diaper. Then, the following procedures (1) to (3) are used for determination. (1) From the first direction joint row Rx, select the joint row having the highest proportion of the joints 33a having the through holes 33c, and select the joint row as the first direction maximum proportion joint row Rxm. To do. For example, as shown in FIG. 10, as the first direction joint line Rx, the third joint 33 having no through hole and the third joint 33a having the through hole 33c are alternately arranged in the first direction X.
  • the first direction first joint portion in which the proportion of joint portions 33a having through holes 33c out of the number of joint portions constituting the joint portion row (hereinafter, also referred to as “perforated joint portion ratio”) is 50%.
  • the first direction second joint in which the row Rx1 and the number of joint portions constituting the joint row are all joint portions 33 having no through-holes 33c, and the joint portion ratio with holes is 0%.
  • the first direction first joint row Rx1 having the highest hole-attached portion ratio becomes the first direction maximum proportion joint portion row Rxm.
  • the second direction joint portion row Ry all of the number of joint portions constituting the joint portion row are joint portions 33a having through holes 33c, and the joint portion ratio with holes is 100% of the first second-direction first joint rows Ry1 and the number of joints constituting the joint rows are joint portions 33 that do not have through holes 33c, and the joint portions with holes
  • the second second-direction first joint row Ry1 and the second-direction second joint row Ry2 have a ratio of 0%
  • the first second-direction first in the hole-attached joint portion is the highest.
  • One junction row Ry1 is the second direction maximum proportion junction row Rym. In the example shown in FIG.
  • the first second direction first joint rows Ry1 arranged in every third row in the first direction X are the second direction maximum proportion joint rows Rym.
  • the ratio of the joint portion with holes in the first direction maximum proportion joint portion row Rxm and the proportion of the joint portion with holes in the second direction maximum proportion joint portion row Rym are compared.
  • the maximum proportion joint row In the example shown in FIG. 10, the joint ratio with holes in the first direction maximum proportion joint portion row Rxm is 50%, whereas the joint proportion with holes in the second direction maximum proportion joint portion row Rym is 100%. Therefore, the second direction maximum proportion joint portion row Rym having the joint portion with holes of 100% becomes the maximum proportion joint portion row.
  • the side region S of the composite sheet 10 in the first embodiment is formed of the joint portion 33 a having the through hole 33 c in the second direction joint portion row Ry having a plurality of rows in the first direction X.
  • the second direction maximum proportion joint portion row Rym having the highest proportion (the joint portion with holes) is periodically provided in the first direction X.
  • the composite sheet 10 is easily bent regularly along the width direction of the diaper 100 (the article width direction).
  • the both side portions of the diaper 100 in which the side region S is arranged have a further improved fit along the curved shape around the wearer's leg, and is less likely to give a sense of incongruity to the wearer's leg.
  • the “second direction maximum proportion joint row” is determined by the method described in the procedure (2).
  • the second direction maximum proportion joint row Rym is arranged in every third row in the first direction X, but is arranged every other row, every other row, or every fourth row. May be. Further, in addition to the second direction joint portion row Ry having the hole-attached portion ratio of 100% and 0%, the hole-attached portion portion has the second direction joint portion row Ry having a ratio of more than 0% and less than 100%. May be.
  • the joint portion with holes is preferably 10% or more and 100% or less, and more preferably 15% or more and 100% or less.
  • the second direction maximum proportion joint portion row Rym has a difference from the second direction joint portion row Ry having the lowest hole joint portion proportion in the second direction joint portion row Ry, preferably 5 points or more, More preferably, it is 10% point or more, preferably 100% point or less, more preferably 95% point or less.
  • the joint portion with holes is preferably 10% or more and 100% or less, and more preferably 15% or more and 95% or less.
  • the first direction maximum proportion joint portion row Rxm has a difference from the first direction joint portion row Rx having the lowest hole joint portion proportion in the first direction joint portion row Rx, preferably 0 point or more, More preferably, it is 5% point or more, preferably 95% point or less, more preferably 90% point or less. Further, the difference in the joint ratio with holes in the second direction maximum proportion joint row Rym and the first direction maximum proportion joint row Rxm is preferably 5% point or more, more preferably 10% point or more, and preferably 90% point or less, more preferably 80% point or less.
  • the side region S of the composite sheet 10 is a side portion caused by stress while the proportion of the joint portion 33a having the through hole 33c in the joint portion 33 included in the side region S softens the absorbent article such as the diaper 100.
  • it is preferably 5% or more, more preferably 10% or more, still more preferably 15% or more, and preferably 80% or less, more preferably 75. % Or less, more preferably 70% or less.
  • the “ratio (%)” is a through-hole 33c included in a rectangular measurement piece having a length of 20 mm in the first direction X and a length of 100 mm in the second direction Y cut out from the side region S two by two.
  • the value obtained by dividing the number of joints 33a having the number of joints by the total number of joints included in the measurement piece is multiplied by 100. This is also the average of 4 samples.
  • the side first convex portions 41 ′ are formed in the composite sheet 10 in the form of dotted spots in plan view, more specifically in a staggered pattern. Is formed.
  • the side first convex portion 41 ′ is surrounded by the six third joint portions 33 described above.
  • the six third joint portions 33 surrounding the side first convex portions 41 ′ and the portions between the third joint portions 33 adjacent to each other in the six third joint portions 33 are the central portions of the side first convex portions 41 ′. Is formed in a state of being dispersed in the planar direction of the composite sheet 10. More specifically, as shown in FIG.
  • an angle ⁇ (see FIG. 10) between the first virtual straight line L ⁇ b> 3 and a plurality of first virtual straight lines L ⁇ b> 3 parallel to each other on the composite sheet 10 in plan view.
  • the side first convex portion 41 ′ is located at each intersection of the first virtual straight line L3 and the second virtual straight line L4. .
  • the side first convex portions 41 ′ guided to the side region S and arranged in a lattice pattern in the side region S serve as a barrier to promote diffusion in the first direction X, and the absorption body 14 for excrement such as urine Uniform absorption from the entire area can be further promoted.
  • the angle ⁇ (see FIG. 10) formed by the first virtual line L3 and the second virtual line L4 is preferably 30 ° or more and 165 ° or less, and more preferably 45 ° or more and 150 ° or less.
  • the first virtual line L3 and the second virtual line L4 are both inclined with respect to the first direction X and the second direction Y, but the first virtual line L3 and the second virtual line L4 are inclined. Either one or both of the straight line L3 and the second virtual straight line L4 may be parallel to the first direction X or the second direction Y.
  • a plurality of side first convex portions 41 ′ are arranged at regular intervals along a plurality of third direction convex portion rows in series along the first imaginary straight line L 3.
  • the side first convex portions 41 ′ are formed with a plurality of fourth direction convex portion rows arranged in series along the second virtual straight line L4 at a constant interval.
  • a third direction joint row R5 in which a plurality of joint pairs 34 are arranged in series at a constant interval is formed between adjacent third direction convex rows, and between adjacent fourth direction convex rows.
  • a fourth direction joint row R6 in which a plurality of joint pairs 34 are arranged in series at a constant interval is formed.
  • the convex portion 44 ′ has a height that slightly protrudes from the upper surface of the third joint portion 33, and usually the height H4 ′ is 1/3 or less of the side first convex portion 41 ′. Therefore, an air passage through which air easily flows is provided between the third direction convex row and between the fourth direction convex rows, and excellent air permeability is obtained.
  • the convex portion of the composite sheet preferably has the following configuration.
  • FIG. 8 (a)] is preferably 0.5 mm or more, more preferably 1.0 mm or more, preferably 5.0 mm or less, more preferably 4.0 mm or less, and preferably 0.5 mm. It is not less than 5.0 mm, more preferably not less than 1.0 mm and not more than 4.0 mm.
  • the height H1 ′ of the side first convex portion 41 ′ which is the convex portion having the maximum height formed in the side region S, is preferably 0.3 mm or more, more preferably 0.6 mm or more, and preferably It is 4.0 mm or less, More preferably, it is 3.0 mm or less, Preferably it is 0.3 mm or more and 4.0 mm or less, More preferably, it is 0.6 mm or more and 3.0 mm or less.
  • the height is the height from the lower surface directed toward the absorber 14 to the top of the convex portion 4.
  • the length of the first joint portion 31 along the first direction X is preferably 1.2 times or more, particularly 1.5 times or more of the length along the second direction Y, and 5. It is preferably 0 times or less, particularly preferably 3.0 times or less, more specifically 1.2 times or more and 5.0 times or less, and particularly preferably 1.5 times or more and 3.0 times or less.
  • the length along the 1st direction X of the 1st junction part 31 is 1.2 times or more of the length along the 1st direction X of the 2nd junction part 32, especially 1.5 times or more.
  • it is 5.0 times or less, particularly 3.0 times or less, more specifically 1.2 times or more and 5.0 times or less, particularly 1.5 times or more and 3.0 times or less. It is preferable that
  • the length along the first direction X of the first joint portion 31 is preferably 0.5 mm or more, particularly 1.0 mm or more, more preferably 10.0 mm or less, and particularly preferably 5.0 mm or less. Specifically, it is preferably 0.5 mm or more and 10.0 mm or less, and particularly preferably 1.0 mm or more and 5.0 mm or less.
  • the length along the first direction X of the second joint portion 32 is preferably 0.1 mm or more and 5.0 mm or less, particularly preferably 0.2 mm or more and 3.0 mm or less, and the length along the second direction Y. However, it is preferably 0.1 mm or more and 5.0 mm or less, particularly preferably 0.5 mm or more and 3.0 mm or less.
  • the length along the first direction X of the third joint portion 33 is preferably 1.2 mm or more and 5.0 mm or less, particularly preferably 1.5 mm or more and 3.0 mm or less, and the length along the second direction Y. Is preferably 1.2 mm or more and 5.0 mm or less, particularly preferably 1.5 mm or more and 3.0 mm or less.
  • the interval La between the third joint portions 33 in the second direction Y is large between the third joint portions 33 in the narrow portion. 2.0 times or more, particularly 2.5 times or more, preferably 5.0 times or less, particularly preferably 4.0 times or less, and 2.0 times or more and 5.0 times It is preferable that it is 2 times or less, especially 2.5 times or more and 4.0 times or less.
  • the heights H1, H1 ′, H2, H3, and H4 of the convex portions 41, 41 ′, 42, 43, and 46 are as follows from the lower surface of the second sheet 2 as shown in FIGS. Defined as the distance to the top surface.
  • the heights H1, H1 ′, H2, H3, and H4 are measured by measuring the shortest distance between the lower surface of the second sheet 2 and the top of the convex portion using a digital microscope (manufactured by Keyence). To the value obtained.
  • the belt-shaped first sheet 1 and the first roll whose peripheral surfaces are in mesh with each other are formed in the same manner as in the method described in JP-A-2015-112343.
  • the first sheet 1 is moved from the meshing portion along the peripheral surface portion of the first roll,
  • the sheet 2 is supplied so as to be superposed on the first sheet 1, and both sheets 1 and 2 are sandwiched and partially joined by heating between the convex portion of the first roll and the heat roll.
  • corrugated shape of a 1st roll and a 2nd roll and the pattern of the junction part formed with a 1st roll and a heat roll differ by the center part and side part of a 1st sheet
  • a part of the first roll or heat roll in the circumferential direction or part of the axial direction is heated to a higher temperature than other parts by a heating means such as a cartridge heater, and is sandwiched between the heated parts by the heating.
  • a joint portion having a through hole is formed.
  • a pin that protrudes further at the tip of the convex part of the first roll is provided and strongly applied to the pin. You may make it the through-hole of a junction part formed in the pressed part.
  • the vertically long first joint portion 31 and the second joint portion 32 in the center region M of the composite sheet 10 described above have the same width in the second direction Y, and in the second direction Y. You may arrange
  • the central continuous convex portion 40 may have a constant height over the entire length in the second direction Y.
  • region M may be formed in the shape of a dot.
  • the through hole 33c may have an arbitrary shape such as an ellipse, an oval, a triangle, a quadrangle, a pentagon, a hexagon, a star, a heart, or a triangle instead of a circle.
  • Two or more through holes may be formed in one joint portion 33a, but the number of through holes formed in each joint portion is preferably 1 or more and 30 or less.
  • the absorbent article of the present invention may be a pants-type (pull-on-type) disposable diaper instead of the unfolded disposable diaper, or a pants-type or ordinary non-pants-type sanitary napkin. It may be an incontinence pad, a panty liner or the like.
  • An absorbent article comprising a top sheet made of a composite sheet, a back sheet, and an absorbent body disposed between the two sheets, wherein the composite sheet includes a first direction along the article longitudinal direction and a first direction along the article width direction.
  • the first sheet and the second sheet that are stacked are joined to each other at a plurality of joints, and the first sheet is away from the second sheet at a portion other than the joints.
  • the composite sheet Projecting to form a convex part projecting toward the wearer's skin, the composite sheet is a pair of central areas where the convex parts are formed in different patterns and located on both sides of the central area
  • a synthetic resin constituting one or both constituent fibers of the first sheet and the second sheet is formed.
  • ⁇ 2> The absorbent article according to ⁇ 1>, wherein a plurality of central continuous convex portions extending in the second direction are formed in the central region at intervals in the first direction.
  • ⁇ 3> ⁇ 1> or ⁇ 2 in which the groove portion between the central continuous convex portions is continuous with the concave portion formed between the convex portions of the side region at the boundary portion between the central region and the side region.
  • ⁇ 4> The convex portions in the side region are formed on the composite sheet in the side region by a plurality of first imaginary lines parallel to each other and a plurality of second imaginary lines parallel to each other having an angle between the first imaginary lines.
  • the side region has a plurality of first direction joint rows in the second direction in which a plurality of the joints are in series in the first direction, and a plurality of the joints are in a second direction in the second direction. There are a plurality of directional joint rows in the first direction, and the second directional joint row includes a maximum proportion joint row having the highest proportion of joints having the through holes, ⁇ 1
  • the side region has a plurality of second direction joint rows in the first direction in which a plurality of the joints are arranged in series in the second direction, and the side region is formed of the second direction joint row.
  • Absorbent article. ⁇ 7> The absorbent article according to any one of ⁇ 1> to ⁇ 6>, wherein in the side region, a ratio of the joint portion having the through hole in the joint portion is 5% or more and 80% or less.
  • ⁇ 8> The absorbent article according to any one of ⁇ 1> to ⁇ 7>, wherein the central region and the pair of side regions are different in arrangement and form of the protrusions.
  • ⁇ 9> In each of the first and second joints in the central region and the third joint in the side region, it is preferable that both the first sheet and the second sheet are melted and solidified, ⁇ 1> The absorbent article according to any one of ⁇ 8>.
  • the through hole is formed in a central portion of a part of the third joint portion, and the first sheet and the second sheet are disposed around the through hole in a plan view of the composite sheet.
  • the central first convex portions In each of the central continuous convex portions extending in the second direction in the central region, the central first convex portions alternately arranged in the second direction and the central first convex portion having a height lower than that of the central first convex portion.
  • the central first convex portion and the central second convex portion constituting the central continuous convex portion extending in the second direction in the central region preferably have a cavity at least on the back side of the central first convex portion, ⁇
  • the central first convex portion and the central second convex portion constituting the central continuous convex portion extending in the second direction in the central region have cavities on the respective back sides, and cavities on the back surface of the central first convex portion.
  • a hollow on the back surface of the central second convex part, and a continuous hollow part extending continuously along the second direction is formed on the back side of the central continuous convex part, ⁇ 1>
  • ⁇ 14> In the central region of the composite sheet, a non-embossed region that extends in the second direction and does not have the joint portion in the second direction, and extends in the second direction, the joint portion.
  • embossed regions formed in a regular pattern are alternately formed in the first direction.
  • first joint and the second joint in the central region are arranged in the second direction.
  • first joint portion and the second joint portion have different lengths L1 and L2 along the second direction.
  • Absorbent article. ⁇ 16>
  • the first joints having a rectangular shape in the central region are arranged in a line with their long sides coinciding with the first direction and spaced along the second direction, whereby The absorbent article according to any one of ⁇ 1> to ⁇ 15>, wherein a first joint row along the second direction is formed.
  • the quadrangular second joint has one side of two sides orthogonal to each other aligned with the second direction, the other side aligned with the first direction, and spaced along the second direction.
  • the absorbent article according to any one of ⁇ 1> to ⁇ 16>, wherein the absorbent article is disposed in a row and thereby forms a second joint portion row along the second direction.
  • the first joints having a rectangular shape in the central region are arranged in a line at intervals along the second direction with the long sides thereof aligned with the first direction, whereby the second A first joint row along the direction is formed;
  • the absorbent article according to any one of ⁇ 1> to ⁇ 17>, wherein in the first joint row, the arrangement interval of the first joints in the second direction is constant.
  • the quadrangular second joint has one side of two sides orthogonal to each other aligned with the second direction, the other side aligned with the first direction, and spaced along the second direction.
  • the arrangement intervals of the second junctions in the second direction have two types of intervals, alternately having wide intervals and narrow intervals.
  • ⁇ 20> Paying attention to one first joint portion constituting the first joint row along the second direction, a total of four second joint portions constituting two second joint rows along the second direction are Around the first joint, the four corners of the first joint are arranged close to each other so that the corners face each other, thereby positioning the one first joint and its surroundings. In each embossed region in which a group of joints composed of the four second joints is formed and the joints are formed in a regular pattern, the same joint group is the first joint group.
  • the central continuous convex portion of the central region of the composite sheet continuously extends in the second direction and has a portion whose width is regularly narrowed in the second direction.
  • Central first convex portions alternately arranged in the second direction are formed between a pair of first joint portions facing each other across a non-embossed region not having the joint portion in the second direction.
  • the length of the central second convex portion is shorter than the length of the central first convex portion with respect to the length in the direction along the first direction.
  • the central continuous convex portion of the central region has a width (in the first direction) that is a portion made of the central second convex portion having a height lower than that of the central first convex portion.
  • the absorbent article according to any one of the above items ⁇ 1> to ⁇ 22> which is a narrow portion having a narrow length.
  • ⁇ 24> In the embossed region where the joint portion is formed in a regular pattern, there is a discontinuous central third convex portion surrounded by an annular concave portion, and the central third convex portion is in the second direction.
  • a central first convex part, a central second convex part, a central third convex part, and a fourth convex part are formed on the first sheet constituting the fourth sheet.
  • the convex portion is any one of ⁇ 1> to ⁇ 24>, wherein the height is lower than any of the central first convex portion, the central second convex portion, and the central third convex portion.
  • Absorbent articles. ⁇ 26> In the side region of the composite sheet, a plurality of second direction joint rows in which the third joints are regularly arranged at two types of intervals along the second direction are formed in the first direction.
  • the absorbent article according to any one of ⁇ 1> to ⁇ 25>.
  • a second direction joint line in which a plurality of the joints are arranged in series in the second direction has a first interval and a width larger than the first interval as a distance between the third joints in the second direction.
  • a plurality of the third joints in the second direction joint line, and the second direction so that these two kinds of spacings are alternately provided in the second direction.
  • the second direction maximum proportion joint portion row having the highest proportion of joint portions having through holes is the second joint portion with a hole among the second direction joint portion rows in which the plurality of joint portions are arranged in series in the second direction.
  • the second direction maximum proportion joint portion row having the highest proportion of joint portions having through holes among the second direction joint portion rows in which the plurality of joint portions are arranged in series in the second direction is the second direction joint portion.
  • the difference from the joint row with the lowest hole joint ratio is preferably 5% points or more, more preferably 10% points or more, and preferably 100% points or less, more preferably 95% points or less.
  • the first direction maximum proportion joint portion row having the highest proportion of joint portions having through holes among the first direction joint portion rows in which the plurality of joint portions are serially arranged in the first direction has a joint portion ratio with a hole.
  • the first direction maximum proportion joint portion row having the highest proportion of joint portions having through holes among the first direction joint portion rows in which the plurality of joint portions are arranged in series in the first direction is the first direction joint portion.
  • the difference from the joint portion row having the lowest perforated joint portion is preferably 0% point or more, more preferably 5% point or more, and preferably 95% point or less, more preferably 90% point or less.
  • the second direction maximum proportion joint portion row having the highest proportion of joint portions having through holes and the plurality of joint portions are the second direction joint portion rows in which the plurality of joint portions are arranged in series in the second direction.
  • the first direction maximum proportion joint portion row having the highest proportion of joint portions having through holes has a difference in the joint proportion with holes, preferably 5%.
  • the absorbent article according to any one of ⁇ 1> to ⁇ 31> which is at least a point, more preferably at least 10% point, and preferably at most 90% point, more preferably at most 80% point.
  • the ratio of the bonding portion having a through hole in the bonding portion included in the side region S is preferably 5% or more, more preferably 10% or more, and still more preferably 15 % Or more, preferably 80% or less, more preferably 75% or less, and even more preferably 70% or less, the absorbent article according to any one of ⁇ 1> to ⁇ 32>.
  • the angle ⁇ is The absorbent article according to any one of ⁇ 1> to ⁇ 33>, preferably 30 ° to 165 °, and more preferably 45 ° to 150 °.
  • the height H1 of the central first convex portion 41 constituting the central continuous convex portion or the portion having the highest height of the central continuous convex portion, which is the convex portion having the maximum height formed in the central region, is preferably The absorptivity according to any one of ⁇ 1> to ⁇ 34>, which is 0.5 mm or more, more preferably 1.0 mm or more, preferably 5.0 mm or less, more preferably 4.0 mm or less. Goods.
  • the height of the first convex portion which is the convex portion having the maximum height formed in the side region, is preferably 0.3 mm or more, more preferably 0.6 mm or more, and preferably 4.0 mm or less,
  • the absorbent article according to any one of ⁇ 1> to ⁇ 35> which is preferably 3.0 mm or less.
  • the length of the first joint formed in the central region along the first direction is preferably 1.2 times or more, particularly 1.5 times or more of the length along the second direction.
  • the absorbent article according to any one of ⁇ 1> to ⁇ 36> preferably 5.0 times or less, particularly preferably 3.0 times or less.
  • the length of the first joint formed in the central region along the first direction is 1.2 times or more the length of the second joint formed in the central region along the first direction.
  • the absorbent article according to any one of ⁇ 1> to ⁇ 37> preferably 1.5 times or more, and more preferably 5.0 times or less, particularly preferably 3.0 times or less.
  • the length along the first direction of the first joint formed in the central region is preferably 0.5 mm or more, particularly 1.0 mm or more, and 10.0 mm or less, particularly 5.0 mm or less.
  • the absorbent article according to any one of ⁇ 1> to ⁇ 38> preferably.
  • the second joint formed in the central region preferably has a length along the first direction of 0.1 mm to 5.0 mm, particularly 0.2 mm to 3.0 mm.
  • the absorbent article according to any one of ⁇ 1> to ⁇ 39>, wherein a length along the direction is preferably 0.1 mm or more and 5.0 mm or less, particularly preferably 0.5 mm or more and 3.0 mm or less.
  • the third joint formed in the side region preferably has a length along the first direction of 1.2 mm to 5.0 mm, particularly 1.5 mm to 3.0 mm.
  • a length along the direction is preferably 1.2 mm to 5.0 mm, particularly preferably 1.5 mm to 3.0 mm.
  • a plurality of the joint portions arranged in series in the second direction has an interval between portions having a large interval between the third joint portions in the second direction. It is preferably 2.0 times or more, particularly 2.5 times or more, and preferably 5.0 times or less, particularly 4.0 times or less, with respect to the interval between the third joints in the narrow portion.
  • the central region having convex portions formed in different patterns and the side regions on both sides thereof are preferably formed at least in the crotch region in the longitudinal direction of the diaper, from the crotch region to the ventral region and the dorsal region region.
  • Any of the above ⁇ 1> to ⁇ 42> is preferably formed over one or both of the above, or preferably over the entire length of the absorbent body, and preferably over the entire length of the diaper.
  • the surface on the second sheet side is substantially flat in both the central region and the side region, and irregularities having large undulations are formed on the first sheet side, ⁇ 1>
  • the absorbent article of the present invention does not give a sense of incongruity to the wearer's legs, is excellent in the shape retention of the convex portion of the topsheet, and is excellent in air permeability and stuffiness prevention.

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  • Health & Medical Sciences (AREA)
  • Epidemiology (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Absorbent Articles And Supports Therefor (AREA)
PCT/JP2016/082179 2015-11-20 2016-10-28 吸収性物品 WO2017086132A1 (ja)

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CN113795227B (zh) * 2019-05-10 2023-07-21 王子控股株式会社 用于生产吸收性物品的方法和吸收性物品
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