WO2017086076A1 - 吸収性物品 - Google Patents

吸収性物品 Download PDF

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Publication number
WO2017086076A1
WO2017086076A1 PCT/JP2016/080878 JP2016080878W WO2017086076A1 WO 2017086076 A1 WO2017086076 A1 WO 2017086076A1 JP 2016080878 W JP2016080878 W JP 2016080878W WO 2017086076 A1 WO2017086076 A1 WO 2017086076A1
Authority
WO
WIPO (PCT)
Prior art keywords
area
joint
longitudinal direction
sheet
absorbent article
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2016/080878
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
佐々木　純
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kao Corp
Original Assignee
Kao Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kao Corp filed Critical Kao Corp
Priority to GB1808869.0A priority Critical patent/GB2559705B/en
Priority to RU2018121508A priority patent/RU2683340C1/ru
Priority to DE112016005344.4T priority patent/DE112016005344T5/de
Priority to CN201680063873.4A priority patent/CN108348374B/zh
Publication of WO2017086076A1 publication Critical patent/WO2017086076A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • 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 of the pads
    • A61F13/511—Topsheet, i.e. the permeable cover or layer facing 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
    • A61F13/51—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 of the pads
    • A61F13/511—Topsheet, i.e. the permeable cover or layer facing the skin
    • A61F13/51104—Topsheet, i.e. the permeable cover or layer facing the skin the top sheet having a three-dimensional cross-section, e.g. corrugations, embossments, recesses or projections
    • 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 of the pads
    • A61F13/511—Topsheet, i.e. the permeable cover or layer facing the skin
    • A61F13/5116—Topsheet, i.e. the permeable cover or layer facing the skin being formed of multiple layers
    • 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 of the pads
    • A61F13/511—Topsheet, i.e. the permeable cover or layer facing the skin
    • A61F13/5116—Topsheet, i.e. the permeable cover or layer facing the skin being formed of multiple layers
    • A61F2013/51182—Topsheet, i.e. the permeable cover or layer facing the skin being formed of multiple layers with non-continuous bonding
    • 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 of the pads
    • A61F13/511—Topsheet, i.e. the permeable cover or layer facing the skin
    • A61F13/513—Topsheet, i.e. the permeable cover or layer facing the skin characterised by its function or properties, e.g. stretchability, breathability, rewet, visual effect; having areas of different permeability
    • A61F2013/51316—Topsheet, i.e. the permeable cover or layer facing the skin characterised by its function or properties, e.g. stretchability, breathability, rewet, visual effect; having areas of different permeability with low friction coefficient

Definitions

  • the present invention relates to various absorbent articles such as disposable diapers and sanitary napkins.
  • the skin facing surface side of the top sheet is three-dimensionally for the purpose of reducing the contact area and friction between the top sheet and the wearer's skin, and improving the texture and breathability.
  • a technique for making the shape is known.
  • the center region 2c located in the center portion in the longitudinal direction has a large number of long convex portions 21 in the longitudinal direction, and end regions 2a located before and after the center region 2c, 2b describes the top sheet 2 of the absorbent article 1 having a large number of long convex portions 22 in the width direction of the absorbent article.
  • the convex portions 21 and 22 in the central region 2 c and the end regions 2 a and 2 b are arranged in a state of being dispersed in the longitudinal direction and the width direction of the absorbent article 1.
  • the top sheet 2 has a first non-woven fabric 23 in which convex portions 21 and 22 are formed, and a substantially flat second non-woven fabric 24 joined to the first non-woven fabric 23 in a portion other than the convex portions 21 and 22 of the first non-woven fabric 23. It consists of.
  • the absorptive article 1 which has such a surface sheet 2 is described in the literature that it is excellent in absorption performance and is excellent also in leakage prevention performance.
  • a large number of convex portions 21 are formed in a state dispersed in the longitudinal direction and the width direction in the central region 2a disposed in the central portion extending in the longitudinal direction, and both left and right sides of the central region 2a
  • the top sheet 2 is composed of a first nonwoven fabric 22 shaped in a concavo-convex shape and a substantially flat second nonwoven fabric 23 joined to the first nonwoven fabric 22 in the whole or part of the recess 22a of the first nonwoven fabric 22. .
  • the absorbent article 1 having such a surface sheet 2 is excellent in leakage prevention performance, and is described in the literature as being capable of effectively preventing both side leakage and leakage from the front and rear ends. Yes.
  • the present invention is an absorbent article comprising a top sheet, a back sheet, and an absorber disposed between both sheets,
  • the top sheet is composed of a laminate of a first sheet and a second sheet,
  • the laminated body has a plurality of joint portions by partial joining of the first sheet and the second sheet, and the first sheet protrudes in a direction away from the second sheet at a portion other than the joint portion, and the wearer's body
  • the topsheet has a central area located in the center in the width direction and extending in the longitudinal direction, and a pair of side areas adjacent to the central area and extending in the longitudinal direction,
  • the shape and / or arrangement pattern of the joint is different between the central region and the side region,
  • the area ratio of the joint is substantially the same in the central region and the side region,
  • the present invention provides an absorbent article in which the number of the joints per unit area is larger in the side region than in the central region.
  • FIG. 1 is a plan view of a disposable diaper, which is an embodiment of the absorbent article of the present invention, in an expanded state in which the elastic member of each part is expanded and expanded in a planar shape, as viewed from the surface sheet side that is the skin facing surface.
  • FIG. 2 is a cross-sectional view in the thickness direction schematically showing a cross section taken along line II-II in FIG.
  • FIG. 3 is a plan view showing a part of the skin facing surface of the topsheet arranged in the diaper shown in FIG. 4 is an enlarged plan view showing a main part of FIG.
  • Drawing 5 is a mimetic diagram showing an example of the section structure of the 1st fiber or the 2nd fiber used for the surface sheet of the absorptive article of the present invention.
  • Fig.6 (a) and FIG.6 (b) are top views which show another embodiment of the surface sheet used for the absorbent article of this invention.
  • the present invention relates to an improvement in the surface sheet of an absorbent article composed of a laminate of two sheets. More specifically, the present invention exhibits a good texture and peeling or floating occurs between the two sheets.
  • the present invention relates to an absorbent article having a hard surface sheet.
  • the disposable diaper 1 which is one Embodiment of the absorbent article of this invention is shown by FIG.1 and FIG.2.
  • the diaper 1 has an abdominal side portion 1F disposed on the abdomen side of the wearer when worn, a back side portion 1R disposed on the back side, and a crotch portion 1M located therebetween.
  • the diaper 1 extends from the abdominal side portion 1F to the back side portion 1R via the crotch portion 1M, and has a longitudinal direction X corresponding to the wearer's front-rear direction and a lateral direction Y orthogonal thereto.
  • the abdominal side portion 1F, the crotch portion 1M, and the back side portion 1R correspond to respective regions when the diaper 1 is divided into three equal parts in the vertical direction X.
  • the crotch part 1M has an excretion part facing part that is arranged to face the excretion part of the wearer when the diaper 1 is worn, and the excretion part facing part is usually the central part in the longitudinal direction X of the diaper 1 or its vicinity. Is located.
  • the diaper 1 is disposed on the skin-facing surface side of the absorbent body 4 having an absorbent core 40 and can be in contact with the skin of the wearer when worn. And a liquid-impermeable or water-repellent back sheet 3 disposed on the non-skin facing surface side of the absorbent body 4.
  • the diaper 1 has a vertically long hourglass shape in which a central portion in the vertical direction X located in the crotch portion 1M is bound inward and is long in one direction, that is, the vertical direction X.
  • the top sheet 2 has substantially the same dimensions as the absorbent body 4 or slightly larger dimensions than the absorbent body 4.
  • the back sheet 3 has a size larger than that of the absorber 4.
  • the back sheet 3 has a larger dimension than the top sheet 2.
  • the back sheet 3 extends outward from the peripheral edge of the absorbent body 4 and forms the outer shape of the diaper 1 in a developed and extended state as shown in FIG.
  • various materials conventionally used for this type of absorbent article can be used without particular limitation, and a resin film, a laminate of a resin film and a nonwoven fabric, or the like can be used.
  • the back sheet 3 may have air permeability.
  • the “skin-facing surface” is a surface of the absorbent article or a component thereof (for example, the absorbent body 4) that is directed toward the wearer's skin when the absorbent article is worn, that is, relative to the wearer's skin. It is the surface near the skin.
  • the “non-skin facing surface” is a surface of the absorbent article or a component thereof that is directed to the side opposite to the skin side when the absorbent article is worn, that is, the side relatively far from the wearer's skin.
  • “At the time of wearing” as used herein means a normal proper wearing position, that is, a state in which the correct wearing position of the absorbent article is maintained, and includes when the absorbent article is deviated from the wearing position. Absent.
  • Side sheets 5 are arranged on both the left and right sides along the longitudinal direction X on the surface sheet 2 side of the diaper 1.
  • the side seat 5 has an inner edge along the vertical direction X, and an outer edge along the vertical direction X that is located outside the inner edge in the lateral direction Y, and has a flat surface as shown in FIG. In view, the inner edge overlaps with the absorber 4, and the outer edge extends outward in the lateral direction Y from the side edge along the longitudinal direction X of the absorber 4, as shown in FIG. 3 is joined.
  • a thread-like elastic member 50 is fixed in an extended state along the vertical direction X.
  • a pair of leg gathers is formed in the leg part at the time of wearing of the diaper 1 by contraction of the elastic member 50.
  • a thread-like elastic member 51 is fixed to the inner edge portion of the side seat 5 in an elongated state along the longitudinal direction X. Accordingly, when the diaper 1 is worn, at least the crotch 1M due to the contraction of the elastic member 51.
  • the inner edge side stands up toward the wearer's skin side starting from the joint with the back sheet 3 to form a leak-proof cuff.
  • This leak-proof cuff can prevent outflow of excretion fluid such as urine outward in the lateral direction Y, so-called lateral leakage.
  • the top sheet 2, the back sheet 3, the absorbent body 4, the side sheet 5, and the elastic members 50 and 51 are joined to each other by a known joining means such as a hot-melt adhesive.
  • Diaper 1 is a so-called unfolded disposable diaper.
  • a pair of fastening tapes 6, 6 are provided on both side edges along the longitudinal direction X of the back side 1 ⁇ / b> R of the diaper 1.
  • a fastening portion (not shown) made of a male member of a mechanical surface fastener is attached to the fastening tape 6.
  • region 7 which consists of a female member of a mechanical hook-and-loop fastener is formed in the non-skin opposing surface of the belly side part 1F of the diaper 1.
  • the to-be-attached region 7 is formed by attaching a female member of a mechanical hook-and-loop fastener to the non-skin facing surface of the back sheet 3 that forms the non-skin facing surface of the abdominal side portion 1F by a known joining means such as an adhesive or heat seal. It is formed by joining and fixing, and the fastening portion of the fastening tape 6 can be detachably fastened.
  • the absorber 4 has a shape that is long in the longitudinal direction X in a plan view as shown in FIG. 1, and extends from the ventral portion 1F to the dorsal portion 1R.
  • the absorbent body 4 includes a liquid-retaining absorbent core 40 containing an absorbent material, and a core wrap sheet 45 that covers the skin facing surface 40a and the non-skin facing surface 40b of the absorbent core 40. Yes.
  • the absorbent core 40 and the core wrap sheet 45 are joined by a known joining means such as a hot melt adhesive.
  • the absorber 4 (absorbent core 40) is formed symmetrically with respect to a virtual straight line (not shown) extending in the longitudinal direction X by dividing the diaper 1 into the transverse direction Y.
  • the absorbent core 40 may have a single layer structure. Alternatively, the absorbent core 40 can be a multilayer structure.
  • the absorptive core 40 has an hourglass shape in which a central portion in the longitudinal direction, that is, the longitudinal direction X is bound inward in a plan view as shown in FIG.
  • the absorbent core 40 is formed by stacking a core forming material including an absorbent material.
  • the absorbent material those normally used as a material for forming this type of absorbent core can be used without any particular limitation.
  • hydrophilic fibers such as wood pulp, synthetic fibers treated with a hydrophilizing agent, and water absorption Include polymer particles. That is, the absorbent core 40 may be a hydrophilic fiber stack, or a structure in which water-absorbing polymer particles are supported on the stack.
  • the core wrap sheet 45 a water-permeable sheet material can be used.
  • the core wrap sheet 45 for example, paper, nonwoven fabric, or the like can be used.
  • the core wrap sheet 45 is a single continuous core wrap sheet 45 having a width that is not less than 2 times and not more than 3 times the length of the absorbent core 40 in the lateral direction Y.
  • the single core wrap sheet 45 covers the entire area of the skin facing surface 40 a of the absorbent core 40, and outward in the lateral direction Y from both side edges along the longitudinal direction X of the absorbent core 40.
  • the extending portion is rolled down below the absorbent core 40 to cover the entire area of the non-skin facing surface 40b of the absorbent core 40.
  • the form of the core wrap sheet 45 is not limited thereto.
  • the skin side core wrap sheet that covers the skin facing surface 40a of the absorbent core 40 and the non-skin facing surface 40b of the absorbent core 40 are not covered.
  • the skin-side core wrap sheet may be included, and both sheets may be separate sheets.
  • the topsheet 2 disposed on the skin facing surface 40 a side of the absorbent body 4 has a central region S and a pair of side regions M and M located on both sides of the central region S. Yes.
  • the central area S is located at the center of the diaper 1 in the width direction (that is, the lateral direction Y) and extends along the longitudinal direction of the diaper 1 (that is, the longitudinal direction X).
  • the pair of side regions M, M are adjacent to the central region S and extend along the longitudinal direction (that is, the longitudinal direction X) of the diaper 1.
  • the central area S and the side area M are preferably formed at least in the crotch part 1M, and further formed from the crotch part 1M to one or both of the abdominal side part 1F and the back side part 1R. Preferably, it is more preferably formed over the entire length of the absorbent body 4, and even more preferably formed over the entire length of the diaper 1.
  • the central region S and the side region M can be distinguished by the shape and / or arrangement pattern of the joints described later.
  • the width of the central area S is preferably 30% or more, and more preferably 40% or more with respect to the width of the topsheet 2. Further, it is preferably 70% or less, and more preferably 60% or less. Furthermore, the width of the central region S is preferably 30% or more and 70% or less, and more preferably 40% or more and 60% or less with respect to the width of the topsheet 2.
  • the width of the side region M is preferably 15% or more, and more preferably 20% or more with respect to the width of the topsheet 2. Further, it is preferably 35% or less, and more preferably 30% or less.
  • the width of the side area M is preferably 15% or more and 35% or less, and more preferably 20% or more and 30% or less with respect to the width of the topsheet 2.
  • the total width of the side regions M is preferably 30% or more, more preferably 40% or more, with respect to the width of the topsheet 2. Further, it is preferably 70% or less, and more preferably 60% or less. Further, the total width of the side regions M is preferably 30% or more and 70% or less, and more preferably 40% or more and 60% or less with respect to the width of the topsheet 2.
  • the top sheet 2 is composed of a laminate of a first sheet and a second sheet.
  • seat is located in a wearer's body side in the wearing condition of the diaper 1.
  • FIG. The second sheet is located on the absorber 4 side.
  • the top sheet 2 is formed by embossing or ultrasonically processing the laminated first sheet and second sheet in both the central region S and the side region M. Are joined together to form a plurality of joints M11, M12, S11, S12, and the first sheet is away from the second sheet at a portion other than the joints M11, M12, S11, S12.
  • the surface sheet 2 has a substantially flat surface on the second sheet side in both the central area S and the side area M, and has large undulations on the first sheet side.
  • the joint portions S11 and S12 are identical in that they have a rectangular shape having sides along the vertical direction X and the horizontal direction Y, but have different shapes.
  • the joint portions S11 are arranged in a row at a predetermined distance along the vertical direction X, and form a first joint portion row S31.
  • the joint portions S12 are also arranged in a row at a predetermined distance along the vertical direction X, and form a second joint portion row S32 and a third joint portion row S33. Between the adjacent first joint rows S31, second joint rows S32 and third joint rows S33 are alternately arranged.
  • the second joint row S32 and the third joint row S33 have the same pitch of the joint portions S12 along the longitudinal direction X, and the phases are shifted by a half pitch. In this manner, the joints S11 and S12 are arranged, and thus the convex portions S21 and S22 are formed in the central region S.
  • the convex part S ⁇ b> 21 has a substantially elliptical plan view shape in which the length along the horizontal direction Y is longer than the length along the vertical direction X.
  • the convex part S22 has a substantially circular plan view shape in which the length along the horizontal direction Y and the length along the vertical direction X are substantially the same.
  • the first convex portion row S34 in which the convex portions S21 and the convex portions S22 are alternately arranged along the vertical direction X is formed in the central region S.
  • column S34 is located in the same position as 2nd junction part row
  • the second convex portion row S35 in which only the convex portions S22 are arranged along the vertical direction X is formed in the central region S.
  • column S35 is located in the same position as 3rd junction part row
  • substantially elliptical shape is a concept including a complete elliptical shape and an oval shape. “The length along the horizontal direction Y and the length along the vertical direction X are substantially the same, substantially circular” means a complete circle and a length along the vertical direction X with respect to the length along the horizontal direction Y. Includes both ellipses when in the range of ⁇ 10%.
  • the joint portions M11 and M12 are identical in that they have a rectangular shape having sides along the vertical direction X and the horizontal direction Y, but have different shapes.
  • the joints M11 are arranged in a row at a predetermined distance along the vertical direction X, and form a fourth joint row M31.
  • the joint portions M12 are also arranged in a row at a predetermined distance along the vertical direction X, and form a fifth joint portion row M32.
  • the fourth joint rows M31 and the fifth joint rows M32 are alternately arranged in the horizontal direction Y.
  • the pitch of the joint part M11 in the fourth joint part row M31 and the pitch of the joint part M12 in the fifth joint part row M32 are both the same.
  • the placement of the joints M11 and M12 is shifted by a half pitch.
  • the convex part M21 which is one kind of convex part is formed.
  • the convex portion M21 is formed in a region surrounded by a total of four joint portions, which are two joint portions M11 adjacent along the vertical direction X and two joint portions M12 adjacent along the horizontal direction Y. Yes.
  • the convex portion M21 has a substantially circular plan view shape in which the length along the horizontal direction Y and the length along the vertical direction X are substantially the same.
  • the side region M includes a third convex row M33 in which convex portions M21 are arranged along the horizontal direction Y and a fourth convex row M34. Is formed.
  • the pitch of the convex part M21 is the same, and arrangement
  • the convex portions S21 and the convex portions S22 formed in the central area S may have the same height or different heights, but have different heights from the viewpoint of improving the appearance and tactile sensation. It is preferable. When the heights of the two convex portions S21 and S22 are different, the convex portion S21 may be higher than the convex portion S22, or conversely, the convex portion S22 may be higher than the convex portion S21. Good. By making the two convex parts different in height, when touching the part with a finger, different parts of the tactile sensation appear alternately, and more than one having the same type of convex part. You can feel the texture well.
  • the height of the convex part M21 may be the same as or different from the convex part S21 and the convex part S22.
  • the height of the convex portion M21 may be the same as one of the convex portion S21 and the convex portion S22, or may be the same as or different from both the convex portion S21 and the convex portion S22. It may be.
  • the convex portion M ⁇ b> 21 arranged in the side region M is preferably configured by one type of convex portion.
  • positioned at the side part area M is lower than the height of convex part S21, S22 arrange
  • the shape and / or arrangement pattern of the joint portions S11, S12, M11, and M12 are different between the central region S and the side regions M. That is, at least one of the shapes or arrangement patterns of the joint portions S11, S12, M11, and M12 is different between the central region S and the side regions M.
  • the arrangement pattern of the joint is the same, but the shape of the joint is different, or (ii) the shape of the joint is the same, Either the arrangement pattern of the junction is different, or (iii) the arrangement pattern of the junction is different and the shape of the junction is also different.
  • the contact between the topsheet 2 and the skin of the wearer can be appropriately controlled, and the appearance can be greatly changed.
  • the shape and arrangement pattern of the joints are different.
  • the arrangement pattern of the joint portions S11, S12, M11, and M12 is different between the central region S and the side region M, and the shapes of the joint portions S11, S12, M11, and M12 are also different. Is different.
  • the area ratio of the joint portion is the central region S and the side region M. It is almost the same.
  • the area ratio (%) of the joint is obtained by dividing the sum of the areas of the joint in the predetermined area in each of the central area S and the side area M by the predetermined area and multiplying by 100. Value.
  • the area ratio of the joint portion is substantially the same when the area ratio of the joint portion is the same in the central area S and the side area M, and the area ratio of the side area M with respect to the area ratio of the central area S. Both cases within the range of ⁇ 15% are included. That is, when the area ratio of the central area S is A%, when the area ratio of the side area M is 0.85 A% or more and 1.15 A% or less, the area ratio between the central area S and the side area M is approximately It is said to be the same.
  • the area ratio of the joint portion is substantially the same in the central region S and the side region M, the first sheet and the second sheet constituting the surface sheet 2 are peeled in the wearing state of the diaper 1.
  • the advantage is that it becomes difficult.
  • the surface sheet 2 is manufactured by laminating the first sheet and the second sheet, fluctuations in pressure during rotation of the roll are reduced, and the linear pressure in the width direction of the roll is set to the central region S and the side.
  • the area M can be made substantially the same, and there is an advantage that the workability is remarkably improved. For example, perforation is less likely to occur during the bonding of the first sheet and the second sheet. Further, it is possible to suppress the occurrence of wear and chipping of the roll used for bonding.
  • the absorbent article since the area ratio of the joint portion is substantially the same in the central region S and the side region M, an important advantage of the absorbent article is that the excreted urine can be absorbed uniformly over the entire surface of the absorber. You will be able to get In the present embodiment, the laminated first sheet and second sheet are partially bonded by embossing or ultrasonic processing to form a plurality of bonded portions M11, M12, S11, S12. In the joint, the nonwoven fabric fibers constituting the first sheet and the second sheet are formed into a film to prevent peeling and floating during use, and urine is not absorbed in the joint.
  • the area ratio of the joint portion in the central region S and the side region M is 10% or more. Preferably, it is 15% or more.
  • the area ratio of the joint is preferably 40% or less, and more preferably 35% or less.
  • the area ratio of the joint is preferably 10% or more and 40% or less, and more preferably 15% or more and 35% or less.
  • the number of joint portions per unit area is more than the central region S. Area M is more.
  • Increasing the number of junctions in the side region M more than the central region S has the following advantages (a) and (b).
  • (B) The difference in height between the convex part and the concave part in the side region M is relatively low, and the degree of freedom of the fiber is lowered.
  • the area having the largest area among the joints S11 and S12 formed in the central area S is defined as C, and the area among the joints M11 and M12 formed in the side area M is the largest.
  • the area of the material is D, it preferably has a relationship of C> D. Bonding that forms the number of joints formed in the central region S in the side region M by making the area of the joints formed in the central region S larger than the area of the joint formed in the side region M It becomes easy to make it smaller than the number of parts. Thereby, in the wearing state of the diaper 1, irregular wrinkles are less likely to occur in the central area S. When irregular wrinkles occur, urine and feces tend to flow along the wrinkles, which may cause leakage. On the other hand, liquid leakage is suppressed by suppressing the generation of wrinkles.
  • the area D is preferably 80% or less of the area C, and more preferably 70% or less.
  • the area D is preferably 20% or more of the area C, more preferably 30% or more.
  • the area D is preferably 20% to 80% and more preferably 30% to 70% of the area C.
  • the ratio of the total area of the junctions of area C to the total area of the junctions in the central area S is preferably 20% or more, and more preferably 30% or more.
  • the upper limit of this ratio is preferably 80%, more preferably 70%.
  • the ratio of the total area of the junctions of the area D to the total area of the junctions in the side region M is preferably 80% or more, and more preferably 90% or more.
  • the upper limit of this ratio is preferably 100%.
  • the length of the longest portion along the longitudinal direction X among the joint portions S11, S12 formed in the central region S is E, and the joint portion M11, It is preferable to have a relationship of E> F, where F is the longest length of M12 along the longitudinal direction. Accordingly, when the diaper 1 is worn, the folds are easily generated regularly when the folds are generated in the central area S due to the laterally inward force received by the central area S from the wearer's thigh. In other words, irregular wrinkles are less likely to occur in the central area S. As a result, liquid leakage is suppressed.
  • the length F is preferably 80% or less of the length E, and more preferably 70% or less. Further, the length F is preferably 20% or more of the length E, and more preferably 30% or more. The length F is preferably 20% or more and 80% or less of the length E, and more preferably 30% or more and 70% or less.
  • the ratio of the total area of the joints of length E to the total area of the joints in the central area S is preferably 20% or more, and more preferably 30% or more.
  • the upper limit of this ratio is preferably 100%, more preferably 80%.
  • the ratio of the total area of the joints of length F to the total area of the joints in the side region M is preferably 60% or more, and more preferably 80% or more.
  • the upper limit of this ratio is preferably 100%, more preferably 90%.
  • the shear stress of the sheet 2 in the side region M is higher than the shear stress of the sheet 2 in the central region S.
  • the shear stress is an index of the softness of the convex portions formed in the central region S and the side region M, and means that the convex portions are softer as the shear stress is smaller. Therefore, the fact that the shear stress in the side region M is higher than the shear stress in the central region S means that the convex portion is softer in the central region S than in the side region. Thereby, the convex part of the central area S, which is the most dominant area for the softness, can be softened, and the wearing feeling of the diaper 1 can be improved.
  • the shear stress is measured by the following method.
  • a rectangular shape in plan view having a length of 50 mm in the vertical direction and a length of 30 mm in the horizontal direction is cut out from the surface sheet to be measured to obtain a test piece.
  • an adhesive tape made by Nitto Denko Corporation, trade name “No. 500” having the same shape and dimensions as the test piece is placed on the PET film (Star Trading Co., Ltd., trade name “Star OHP Film”).
  • the laminated body (A) is produced together, and the non-convex part side of the test piece is superimposed on the adhesive tape side on the laminated body (A) to obtain a laminated body (B), and a 1 kg roller is laminated on the laminated body (B ) 5 reciprocations above, and the adhesive tape and the test piece in the laminate (B) are pressure-bonded.
  • a male member of a mechanical fastener having a shape and size capable of covering the entire test piece (manufactured by 3M Co., Ltd., trade name “1600 PPI”) is prepared as the adherend, and the convexity of the test piece on the laminate (B) is prepared.
  • the part side is pressure-bonded with a load of 1.5 kPa through a hook material on the adherend piece to obtain a measurement sample.
  • the measurement sample is mounted between chucks (distance 150 mm between chucks) of a tensile tester (manufactured by Shimadzu Corporation Autograph AG-X), and the measurement sample is peeled 180 degrees.
  • the 180-degree peeling is performed by sandwiching the laminate (B) at one longitudinal end of the measurement sample and the adherend at the other end between chucks of a tensile tester and pulling them in the opposite direction by 180 degrees.
  • the tensile speed is 300 mm / min, and the maximum value of the tensile load at that time is recorded.
  • the measurement location is the diaper longitudinal direction; belly, dorsal side x diaper short direction; left, right, and central 6 places are extracted from one diaper as test pieces, and a total of 3 diapers are measured.
  • the average value is the shear stress (unit: N) of the surface sheet to be measured.
  • the value of the shear stress in the central region S is preferably 25N or more, and more preferably 30N or more. Moreover, it is preferable that it is 34N or less, and it is still more preferable that it is 33N or less.
  • the value of the shear stress in the central region S is preferably 25N or more and 34N or less, and more preferably 30N or more and 33N or less.
  • the value of the shear stress in the side region M is preferably 33N or more and 45N or less, and more preferably 35N or more and 40N or less.
  • the joint pattern of the central region S and the joint pattern of the side region M are made different, or the respective joints. What is necessary is just to make it intensity
  • convex portions S21 and S22 exist in the central region S
  • convex portions M21 exist in the side region M (see FIG. 4).
  • the area of the convex area in the central area S (the convex area S21 in FIG. 4) is S max
  • the area of the convex area in the side area M is the largest (convex area M21).
  • M max is the area
  • M max is the area
  • M max it is important to satisfy the relationship S max > M max .
  • the surface sheet 2 having the above-described configuration can be manufactured according to a method for manufacturing a composite sheet described in, for example, Japanese Patent Application Laid-Open No. 2015-112343. Specifically, for example, after supplying the belt-shaped first sheet between the first roll and the second roll whose peripheral surfaces are meshed with each other, the first sheet is deformed into an uneven shape, After the first sheet is moved from the meshing portion along the peripheral surface portion of the first roll, the second sheet is supplied so as to be superimposed on the first sheet, and both sheets are supplied to the convex portion and the heat roll in the first roll. In this case, the first sheet and the second roll are unevenly shaped, and the first roll and the heat roll. It is obtained by making the pattern of the joint part to be formed different. When the first sheet is deformed into an uneven shape by being engaged with the meshing portion of the first roll and the second roll, the first sheet is sucked toward the inner direction of the roll to obtain the uneven shape of the first sheet. It is preferable to promote the deformation.
  • the first sheet and the second sheet constituting the surface sheet 2 are made of a sheet material.
  • the sheet material for example, fiber sheets such as nonwoven fabric, woven fabric, and knitted fabric, and films 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.
  • the types of sheet materials constituting the first sheet and the second sheet may be the same or different, but are preferably the same type of sheet from the viewpoint of obtaining strong sealing strength.
  • nonwoven fabric When a nonwoven fabric is used as the sheet material constituting the first sheet and the second sheet, examples of the nonwoven fabric include air-through nonwoven fabric, spunbond nonwoven fabric, spunlace nonwoven fabric, meltblown nonwoven fabric, resin bond nonwoven fabric, and needle punch nonwoven fabric. .
  • 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.
  • seat which is a sheet
  • the basis weight of the nonwoven fabric used as the sheet material constituting the first sheet and the second sheet is preferably independently 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, and 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.
  • the first sheet which is a sheet located on the side facing the wearer's skin in the wearing state of the diaper 1, preferably includes a plurality of types of fibers.
  • any one of the upper layer and the lower layer preferably includes a plurality of types of fibers.
  • the plurality of types of fibers preferably include at least two types of fibers including first fibers and second fibers. And it is preferable that a 1st fiber and a 2nd fiber respectively contain a high melting-point component and a low melting-point component whose melting
  • the high melting point component of the first fiber and the high melting point component of the second fiber may be the same or different.
  • the low melting point component of the first fiber and the low melting point component of the second fiber may be the same or different. It is preferable that the first fiber and the second fiber are distinguished by different diameter ratios.
  • the diameter ratio is the ratio of the diameter ( ⁇ m) of the high melting point component and the low melting point component of each of the first and second fibers.
  • the diameter of the high melting point component and the diameter of the low melting point component are, for example, when the first and second fibers are core-sheath type composite fibers, the sheath resin is composed of the low melting point component, and the core resin is composed of the high melting point component.
  • D1 shown in FIG. 5 is the diameter of the low melting point component C1
  • D2 is the diameter of the high melting point component C2.
  • the diameter ratio AX of the high melting point component C2 and the low melting point component C1 of the Xth fiber is calculated from the following equation.
  • the same kind of heat-fusible fiber refers to a fiber having the same resin and the same structure.
  • the high melting point component and the low melting point component of the two are the same resin, and the diameter ratio of the core sheath is the same.
  • the high melting point component and the low melting point component are the same resin, if the diameter ratio is different, they are different types of heat-fusible fibers.
  • “including a plurality of types of fibers” means that different types of heat-fusible fibers are included.
  • Diameter ratio AX of the Xth fiber low melting point component diameter D1 ( ⁇ m) of the Xth fiber ⁇ high melting point component diameter D2 of the Xth fiber ( ⁇ m)
  • the diameter ratio A1 of the first fibers is different from the diameter ratio A2 of the second fibers.
  • the value of A2 / A1, which is the ratio of A2 to A1 is preferably less than 1, more preferably 0.99 or less, and even more preferably 0.91 or less.
  • the value of A2 / A1 is preferably 0.5 or more, more preferably 0.6 or more, and further preferably 0.7 or more.
  • the value of A2 / A1 is preferably 0.5 or more and less than 1, more preferably 0.6 or more and 0.99 or less, and still more preferably 0.7 or more and 0.91 or less.
  • the ratio between the diameter ratio A1 of the first fibers and the diameter ratio A2 of the second fibers is as described above, and the value of the diameter ratio A1 of the first fibers is preferably 1.1 or more. 2 or more is more preferable, and 1.3 or more is more preferable. Also, it is preferably 2.0 or less, more preferably 1.9 or less, and even more preferably 1.8 or less. Specifically, the value of the diameter ratio A1 of the first fibers is preferably 1.1 or more and 2.0 or less, more preferably 1.2 or more and 1.9 or less, and 1.3 or more. More preferably, it is 1.8 or less.
  • the value of the diameter ratio A2 itself of the second fiber is preferably 1.1 or more, more preferably 1.2 or more, and 1.3 or more, provided that it is smaller than A1. More preferably. Also, it is preferably 2.0 or less, more preferably 1.9 or less, and even more preferably 1.8 or less. Specifically, the value of the diameter ratio A2 of the second fiber is preferably 1.1 or more and 2.0 or less, more preferably 1.2 or more and 1.9 or less, and 1.3 or more. More preferably, it is 1.8 or less.
  • FIG. 6 (a) and 6 (b) show another embodiment of the topsheet 2.
  • FIG. The central area S in the topsheet 2 of the embodiment shown in FIG. 6A has joint portions S11 and S12 having different shapes.
  • the joint portions S11 are arranged at predetermined intervals along the vertical direction X, and form a first joint row S31.
  • the joint portions S12 are also arranged at predetermined intervals along the vertical direction X to form a second joint portion row S32.
  • column S32 make one set, and this group is repeatedly arrange
  • the side region M has only a joint part M11 which is one kind of joint part.
  • the joint portions M11 are arranged at a predetermined interval along the vertical direction X and form a fourth joint row M31. Further, the joint portions M11 are arranged at a predetermined interval along the vertical direction X to form a fifth joint portion row M32.
  • the fourth joint row M31 and the fifth joint row M32 have different pitches of the joint portions 11 along the vertical direction X, and the fifth joint row M31 has a pitch different from that in the fourth joint row M31. The pitch is larger.
  • the central region S in the topsheet 2 of the embodiment shown in FIG. 6B has joints S11 and S12 having different shapes.
  • the joint portions S11 are arranged at predetermined intervals along the vertical direction X, and form a first joint row S31.
  • the junction part S11 is arrange
  • the first joint row S31 and the second joint row S32 have the same pitch in the joint portion S11 along the vertical direction X, but are out of phase by a half pitch.
  • the joint portions S12 are arranged at predetermined intervals along the longitudinal direction X to form a third joint portion row S33.
  • the first joint row S31, the third joint row S33, the first joint row S31, the third joint row S33, the second joint row S32, and the third joint row S33 They are purely arranged in the horizontal direction Y and form a set, and this set is repeatedly arranged in the horizontal direction Y.
  • the side region M has only a joint part M11 which is one kind of joint part.
  • the joint portions M11 are arranged at a predetermined interval along the vertical direction X and form a fourth joint row M31. Further, the joint portions M11 are arranged at a predetermined interval along the vertical direction X to form a fifth joint portion row M32.
  • the pitch of the joint portions 11 along the vertical direction X is the same, but the phases are shifted by a half pitch.
  • the area ratio of the joint portion is substantially the same in the central region S and the side region M. It is also preferable that the number of joints per unit area is larger in the side region M than in the central region S. As a result, the surface sheet 2 exhibits a good texture, and it is difficult for peeling and floating to occur between the two sheets.
  • this invention was demonstrated based on the preferable embodiment, this invention is not restrict
  • the said embodiment was an example which applied the absorbent article of this invention to the deployment type disposable diaper, this invention is applicable also to other disposable diapers, for example, a pants-type disposable diaper.
  • the present invention can be similarly applied to absorbent articles other than disposable diapers, such as sanitary napkins and incontinence pads.
  • An absorbent article comprising a top sheet, a back sheet and an absorbent body disposed between the two sheets,
  • the top sheet is composed of a laminate of a first sheet and a second sheet,
  • the laminated body has a plurality of joint portions by partial joining of the first sheet and the second sheet, and the first sheet protrudes in a direction away from the second sheet at a portion other than the joint portion, and the wearer's body
  • the topsheet has a central area located in the center in the width direction and extending in the longitudinal direction, and a pair of side areas adjacent to the central area and extending in the longitudinal direction,
  • the shape and / or arrangement pattern of the joint is different between the central region and the side region,
  • the area ratio of the joint is substantially the same in the central region and the side region,
  • An absorbent article in which the number of the joints per unit area is larger in the side region than in the central region.
  • the area having the largest area among the joints formed in the central region is C
  • the area having the largest area among the joints formed in the side regions is D.
  • the longest length along the longitudinal direction among the joints formed in the central region is E
  • the length along the longitudinal direction among the joints formed in the side regions is E.
  • the absorbent article according to ⁇ 1> or ⁇ 2>, wherein the length of the longest is F, where E> F.
  • Sex goods ⁇ 5> Having an abdominal side part arranged on the abdomen side of the wearer at the time of wearing, a back side part arranged on the back side, and a crotch part located between them;
  • the absorbent article according to any one of ⁇ 1> to ⁇ 4>, wherein the central region and the side region are formed at least in the crotch part.
  • ⁇ 6> Having an abdominal side part arranged on the abdomen side of the wearer at the time of wearing, a back side part arranged on the back side, and a crotch part located between them;
  • the central area and the side area are preferably formed from the crotch part to one or both of the abdominal side part and the back side part, and are formed over the entire length of the absorber.
  • the absorbent article according to any one of ⁇ 1> to ⁇ 5> which is further preferably formed over the entire length of the absorbent article.
  • the width of the central region is preferably 30% or more, more preferably 40% or more, preferably 70% or less, and 60% or less with respect to the width of the topsheet. More preferably, the absorbent article according to any one of ⁇ 1> to ⁇ 6>.
  • the width of the side region is preferably 15% or more and 35% or less, and more preferably 20% or more and 30% or less, with respect to the width of the topsheet, any one of ⁇ 1> to ⁇ 7> Or an absorbent article according to claim 1.
  • the total width of the side regions is preferably 30% or more, more preferably 40% or more, and preferably 70% or less, and 60% or less with respect to the width of the topsheet.
  • the surface sheet has a substantially flat surface on the second sheet side in both the central region and the side region, and the unevenness having large undulations is formed on the first sheet side ⁇ 1>.
  • ⁇ 11> Having a longitudinal direction corresponding to the longitudinal direction of the wearer and a lateral direction perpendicular to the longitudinal direction; In the central region of the topsheet, two types of joints are formed, and the two types of joints coincide with each other in the form of a rectangle having sides along the vertical direction and the horizontal direction.
  • the absorbent article according to any one of ⁇ 1> to ⁇ 10> which has different shapes.
  • ⁇ 12> Having a longitudinal direction corresponding to the longitudinal direction of the wearer and a lateral direction perpendicular to the longitudinal direction; In the central region of the topsheet, two types of joints arranged in a row at a predetermined distance along the longitudinal direction are formed, One joint forms a first joint row, and the other joint forms a second joint row and a third joint row arranged alternately between the adjacent first joint rows. And In the second joint row and the third joint row, the pitches of the other joint portions along the vertical direction are the same, and the phases are shifted by a half pitch. ⁇ 1> to ⁇ 11 > Any one of>.
  • ⁇ 13> Having a longitudinal direction corresponding to the longitudinal direction of the wearer and a lateral direction perpendicular to the longitudinal direction; Two kinds of convex portions are formed in the central area, One convex portion has a substantially elliptical plan view shape in which the length along the horizontal direction is longer than the length along the vertical direction, and the other convex portion has a length along the horizontal direction.
  • ⁇ 14> Having a longitudinal direction corresponding to the longitudinal direction of the wearer and a lateral direction perpendicular to the longitudinal direction; Two types of joints are formed in the side region, and the two types of joints coincide with each other in that they have a rectangle having sides along the vertical direction and the horizontal direction.
  • ⁇ 15> Having a longitudinal direction corresponding to the longitudinal direction of the wearer and a lateral direction perpendicular to the longitudinal direction; Two types of joints arranged in a row at a predetermined distance along the vertical direction are formed in the side region, One joint forms a fourth joint row, The other joint portion forms the fourth joint row and the fifth joint row arranged alternately in the lateral direction, The pitch of the one joint in the fourth joint row and the pitch of the other joint in the fifth joint row are both the same, and the fourth joint row and the fifth joint are the same.
  • the absorbent article according to any one of ⁇ 1> to ⁇ 14>, wherein the arrangement of the joints is shifted by a half pitch.
  • ⁇ 16> Two kinds of convex portions are formed in the central area, The absorbent article according to any one of ⁇ 1> to ⁇ 15>, wherein the two types of convex portions have different heights. ⁇ 17> ⁇ 1> to ⁇ 16, wherein the height of the protrusions arranged in the side area is lower than the height of the protrusions arranged in the central area, or the height of both is the same. > Any one of>. ⁇ 18> The absorbent article according to any one of ⁇ 1> to ⁇ 17>, wherein an arrangement pattern of the joint portions is different between the central region and the side region, and a shape of the joint portion is also different.
  • the area ratio of the joint portion in the central region and the side region is preferably 10% or more, more preferably 15% or more, preferably 40% or less, and 35% or less. More preferably, the absorbent article according to any one of ⁇ 1> to ⁇ 18>.
  • the area D is preferably 80% or less of the area C, more preferably 70% or less, preferably 20% or more, and more preferably 30% or more ⁇ 1> to ⁇
  • the ratio of the total area of the junctions of the area C to the total area of the junctions in the central area is preferably 20% or more, more preferably 30% or more, and the upper limit of this ratio Is preferably 80%, and more preferably 70%, according to any one of ⁇ 1> to ⁇ 20>.
  • ⁇ 22> When the area of the largest of the joints formed in the side region is C, and the area of the largest of the joints formed in the central region is D, The ratio of the total area of the junctions of the area D to the total area of the junctions in the side regions is preferably 80% or more, more preferably 90% or more, The absorbent article according to any one of ⁇ 1> to ⁇ 21>, wherein the upper limit is preferably 100%.
  • ⁇ 23> Having a longitudinal direction corresponding to the longitudinal direction of the wearer and a lateral direction perpendicular to the longitudinal direction; Of the joints formed in the central region, the length of the longest along the longitudinal direction is E, and among the joints formed in the side regions, the length along the longitudinal direction is the longest.
  • the length F is preferably 80% or less of the length E, more preferably 70% or less, preferably 20% or more, and more preferably 30% or more.
  • the ratio of the total area of the junctions of the length E to the total area of the junctions in the central region is preferably 20% or more, more preferably 30% or more, and this ratio
  • the upper limit of is preferably 100%, more preferably 80%, the absorbent article according to any one of ⁇ 1> to ⁇ 23>.
  • ⁇ 25> Of the joints formed in the central region, the length of the longest along the longitudinal direction is E, and among the joints formed in the side regions, the length along the longitudinal direction is the longest.
  • the ratio of the total area of the joints of the length F to the total area of the joints in the side region is preferably 60% or more, more preferably 80% or more.
  • the upper limit of the ratio is preferably 100%, and more preferably 90%, according to any one of ⁇ 1> to ⁇ 24>.
  • the value of the shear stress in the central region is preferably 25N or more, more preferably 30N or more, preferably 34N or less, and more preferably 33N or less ⁇ 1> to ⁇ 25 > Any one of>.
  • the value of the shear stress of the side region is preferably 33N or more, more preferably 35N or more, and preferably 45N or less, provided that the shear stress value of the side region is higher than the shear stress of the central region.
  • the basis weight of the nonwoven fabric used as the sheet material constituting the first sheet and the second sheet is preferably 10 g / m 2 or more, more preferably 15 g / m 2 or more, and preferably 40 g / m 2 or less.
  • Example 1 The surface sheet of “Merry's” (registered trademark, manufactured in 2015), which is a disposable diaper manufactured by Kao Corporation, was removed, and the surface sheet shown in FIGS. 3 and 4 was placed in place thereof to obtain a disposable diaper.
  • the dimensions of the joints in the topsheet shown in FIGS. 3 and 4 were as follows.
  • seat which comprises a surface sheet, ie, the sheet
  • seat was also comprised from the air through nonwoven fabric (basis weight 18g / m ⁇ 2 >).
  • the air-through nonwoven fabric constituting the first sheet has a two-layer structure of an upper layer and a lower layer.
  • the upper layer is a core-sheath type composite fiber of polyethylene terephthalate / polyethylene (resin mass ratio 5/5, 2.3 dtex, core-sheath diameter ratio 1). 57).
  • the lower layer is a core / sheath composite fiber of polyethylene / polyethylene terephthalate (resin mass ratio 5/5, 2.3 dtex, core / sheath diameter ratio 1.57) and a core / sheath composite fiber of polypropylene / low melting point polypropylene (resin mass ratio). 5/5, 2.2 dtex, core-sheath diameter ratio 1.42) and a mass ratio of 5: 5.
  • the air-through nonwoven fabric constituting the second sheet was made of polyethylene terephthalate / polyethylene core-sheath type composite fiber (resin mass ratio 5/5, 2.3 dtex).
  • Example 2 In Example 1, the surface sheet shown in FIG. 6A was used. Other than that was carried out similarly to Example 1, and obtained the disposable diaper.
  • the dimensions of the joint in the topsheet shown in FIG. 6 (a) were as follows. S11: 1 mm x 2 mm, S12: 1 mm x 1 mm, M11: 1 mm x 1 mm (all rectangular)
  • Example 3 In Example 1, what was shown in FIG.6 (b) was used as a surface sheet. Other than that was carried out similarly to Example 1, and obtained the disposable diaper.
  • the dimensions of the joints in the surface sheet shown in FIG. 6B are as follows: S11: 1 mm ⁇ 3 mm, S12: 1 mm ⁇ 1 mm, M11: 1 mm ⁇ 1 mm (all rectangular)
  • Example 1 As a surface sheet, what formed only the junction part of the side area in the surface sheet used in Example 1 was used in the whole region. Other than that was carried out similarly to Example 1, and obtained the disposable diaper.
  • the diaper of the example has a better texture of the surface sheet and is less likely to peel between the sheets than the diaper of the comparative example.
  • an absorbent article provided with a top sheet made of a laminate that exhibits a good texture and hardly peels or floats between two sheets.

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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/JP2016/080878 2015-11-20 2016-10-18 吸収性物品 Ceased WO2017086076A1 (ja)

Priority Applications (4)

Application Number Priority Date Filing Date Title
GB1808869.0A GB2559705B (en) 2015-11-20 2016-10-18 Absorbent article
RU2018121508A RU2683340C1 (ru) 2015-11-20 2016-10-18 Впитывающее изделие
DE112016005344.4T DE112016005344T5 (de) 2015-11-20 2016-10-18 Absorbierender Artikel
CN201680063873.4A CN108348374B (zh) 2015-11-20 2016-10-18 吸收性物品

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2015-228034 2015-11-20
JP2015228034A JP6170987B2 (ja) 2015-11-20 2015-11-20 吸収性物品

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JP (1) JP6170987B2 (enExample)
CN (1) CN108348374B (enExample)
DE (1) DE112016005344T5 (enExample)
GB (1) GB2559705B (enExample)
RU (1) RU2683340C1 (enExample)
TW (1) TWI710366B (enExample)
WO (1) WO2017086076A1 (enExample)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019082677A1 (ja) * 2017-10-25 2019-05-02 花王株式会社 吸収性物品
JP2019076694A (ja) * 2017-10-25 2019-05-23 花王株式会社 吸収性物品
WO2019230646A1 (ja) * 2018-05-29 2019-12-05 花王株式会社 吸収性物品
EP3805763A4 (en) * 2018-05-29 2022-03-09 Kao Corporation SHEET COMFORT EVOCATION PERFORMANCE EVALUATION METHOD AND COMFORT EVOCATION SHEET
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GB2559705A (en) 2018-08-15
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RU2683340C1 (ru) 2019-03-28

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