WO2022145133A1 - Article absorbant - Google Patents

Article absorbant Download PDF

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Publication number
WO2022145133A1
WO2022145133A1 PCT/JP2021/041349 JP2021041349W WO2022145133A1 WO 2022145133 A1 WO2022145133 A1 WO 2022145133A1 JP 2021041349 W JP2021041349 W JP 2021041349W WO 2022145133 A1 WO2022145133 A1 WO 2022145133A1
Authority
WO
WIPO (PCT)
Prior art keywords
region
absorbent article
width direction
nonwoven fabric
density
Prior art date
Application number
PCT/JP2021/041349
Other languages
English (en)
Japanese (ja)
Inventor
秀晃 槇
▲澤▼波 黄
丹秀 何
▲シィアォ▼▲トン▼ 郭
勇輝 南保
俊介 瀧野
Original Assignee
ユニ・チャーム株式会社
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 ユニ・チャーム株式会社 filed Critical ユニ・チャーム株式会社
Publication of WO2022145133A1 publication Critical patent/WO2022145133A1/fr

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/51—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the outer layers
    • A61F13/514—Backsheet, i.e. the impermeable cover or layer furthest from the skin
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/45—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape
    • A61F13/49—Absorbent articles specially adapted to be worn around the waist, e.g. diapers
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/45—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape
    • A61F13/49—Absorbent articles specially adapted to be worn around the waist, e.g. diapers
    • A61F13/496—Absorbent articles specially adapted to be worn around the waist, e.g. diapers in the form of pants or briefs
    • 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
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/51—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the outer layers
    • A61F13/514—Backsheet, i.e. the impermeable cover or layer furthest from the skin
    • A61F13/51456—Backsheet, i.e. the impermeable cover or layer furthest from the skin characterised by its properties
    • A61F13/51464—Backsheet, i.e. the impermeable cover or layer furthest from the skin characterised by its properties being stretchable or elastomeric
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/51—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the outer layers
    • A61F13/514—Backsheet, i.e. the impermeable cover or layer furthest from the skin
    • A61F13/51474—Backsheet, i.e. the impermeable cover or layer furthest from the skin characterised by its structure
    • A61F13/51478—Backsheet, i.e. the impermeable cover or layer furthest from the skin characterised by its structure being a laminate, e.g. multi-layered or with several 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
    • A61F13/514—Backsheet, i.e. the impermeable cover or layer furthest from the skin
    • A61F13/51474—Backsheet, i.e. the impermeable cover or layer furthest from the skin characterised by its structure
    • A61F13/51484—Backsheet, i.e. the impermeable cover or layer furthest from the skin characterised by its structure being inhomogeneous in the plane of the sheet, i.e. having zones of different properties or structures
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/51—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the outer layers
    • A61F13/514—Backsheet, i.e. the impermeable cover or layer furthest from the skin
    • A61F13/51498—Details not otherwise provided for
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/51—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the outer layers
    • A61F13/514—Backsheet, i.e. the impermeable cover or layer furthest from the skin
    • A61F13/51401—Backsheet, i.e. the impermeable cover or layer furthest from the skin characterised by the material
    • A61F2013/51409—Backsheet, i.e. the impermeable cover or layer furthest from the skin characterised by the material being a film
    • A61F2013/51429—Backsheet, i.e. the impermeable cover or layer furthest from the skin characterised by the material being a film being elastomeric or stretchable sheet
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/51—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the outer layers
    • A61F13/514—Backsheet, i.e. the impermeable cover or layer furthest from the skin
    • A61F13/51401—Backsheet, i.e. the impermeable cover or layer furthest from the skin characterised by the material
    • A61F2013/51441—Backsheet, i.e. the impermeable cover or layer furthest from the skin characterised by the material being a fibrous material
    • A61F2013/51452—Backsheet, i.e. the impermeable cover or layer furthest from the skin characterised by the material being a fibrous material being nonwovens
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/51—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the outer layers
    • A61F13/514—Backsheet, i.e. the impermeable cover or layer furthest from the skin
    • A61F13/51474—Backsheet, i.e. the impermeable cover or layer furthest from the skin characterised by its structure
    • A61F2013/51486—Backsheet, i.e. the impermeable cover or layer furthest from the skin characterised by its structure with specially shaped backsheets
    • A61F2013/5149—Backsheet, i.e. the impermeable cover or layer furthest from the skin characterised by its structure with specially shaped backsheets being embossed

Definitions

  • the present invention relates to an absorbent article.
  • Patent Document 1 discloses an absorbent article including a front surface sheet, a back surface sheet, and an absorber arranged between these sheets.
  • the back surface sheet of Patent Document 1 is arranged on the non-skin side of the inner layer sheet which is liquid impermeable and the inner layer sheet. It is provided with an outer layer sheet having a plurality of raised fibers on the surface of the surface. If the non-skin surface side of the absorbent article has good flexibility, the user who touches the absorbent article from the outside will recognize that the product is soft and comfortable to wear.
  • the raised fibers are provided on the outer layer sheet, if the raised fibers are thin, they are easily crushed and it is difficult to improve the flexibility (cushioning property). Further, in the absorbent article of Patent Document 1, the back sheet having bulky raised fibers forms the outer shape of the absorbent article. Therefore, the wearer's legs may come into contact with the bulky back sheet, giving the wearer a sense of discomfort (stiffness).
  • the present invention has been made in view of the above problems, and an object of the present invention is to provide an absorbent article having flexibility and reduced discomfort in wearing.
  • the main inventions for achieving the above object are an absorbent core, a liquid-permeable sheet arranged on the skin side of the absorbent core, and the absorbent core having a longitudinal direction, a width direction, and a thickness direction.
  • the first region overlaps with at least a part of the absorbent core in the thickness direction, and is located outside the first region in the width direction, and the absorbent core and the thickness direction.
  • FIG. 8A is a schematic perspective view of the pants-type diaper 50
  • FIG. 8B is a plan view of the pants-type diaper 50 in an expanded and extended state as viewed from the non-skin side.
  • It has a longitudinal direction, a width direction, and a thickness direction, and has an absorbent core, a liquid-permeable sheet arranged on the skin side of the absorbent core, and a non-woven fabric arranged on the non-skin side of the absorbent core.
  • An absorbent article having a permeable sheet wherein the absorbent article has a plurality of nonwoven fabrics arranged on the non-skin side of the liquid impermeable sheet, and the absorbent core has. It has at least a first region that overlaps with the first region in the thickness direction, and a second region that is located outside the first region in the width direction and does not overlap with the absorbent core in the thickness direction.
  • the absorbent article characterized in that the number of the nonwoven fabrics arranged in the first region is larger than the number of the nonwoven fabrics arranged in the second region.
  • the flexibility (cushioning property) of the non-skin side portion of the first region where the absorbent core is arranged is good, so that the user who touches the absorbent article from the outside can use the absorbent core. It is hard to feel the hardness, and it can give the user the impression that the absorbent article is a soft product.
  • the number of laminated non-woven fabrics is small in the second region that comes into contact with the wearer's legs, the feeling of discomfort (stiffness) in wearing is reduced.
  • the absorbent article has a plurality of high-density portions in which the density of fibers constituting the nonwoven fabric is higher than that of the surroundings, and is located on the side portion in the width direction of the first region.
  • the value obtained by dividing the total area of the high-density portion by the area of the side portion divides the total area of the high-density portion located in the central portion in the width direction of the first region by the area of the central portion.
  • the bonding strength of the side portion of the first region where the side portion of the narrow nonwoven fabric is located is increased, and the narrow nonwoven fabric is difficult to peel off.
  • the area ratio of the high-density portion is low, so that the flexibility of the absorbent article is maintained.
  • the absorbent article wherein the absorbent article has the high-density portion straddling the widthwise side edge of the first region in the width direction.
  • the narrow non-woven fabric is more difficult to peel off.
  • the absorbent article has a plurality of high-density portions in which the density of fibers constituting the nonwoven fabric is higher than that of the surroundings, and is located at the end portion of the first region in the longitudinal direction.
  • the value obtained by dividing the total area of the high-density portion by the area of the end portion divides the total area of the high-density portion located in the central portion in the longitudinal direction of the first region by the area of the central portion.
  • the number of the high-density portions arranged in the end portion of the first region in the longitudinal direction is larger than that of the central portion in the longitudinal direction of the first region.
  • the absorbent article is characterized in that the minimum distance between the high-density portions is small.
  • the end portion of the narrow non-woven fabric in the longitudinal direction is difficult to peel off. Further, since many high-density portions having a relatively small area are densely arranged at the longitudinal end portion of the first region, the user is less likely to feel the hardness of the longitudinal end portion of the first region. ..
  • the plurality of nonwoven fabrics are bonded to each other by the high density portion and the adhesive.
  • the narrow non-woven fabric can be made more difficult to peel off.
  • the floating of the non-woven fabric on the non-skin side can be suppressed.
  • the absorbent article wherein the first region straddles the end of the absorbent core in at least one of the width direction and the longitudinal direction.
  • the edge of the absorbent core is covered from the non-skin side with many non-woven fabrics in the first region, so that the user does not easily feel the hardness of the edge of the absorbent core, and the absorbent article is It can give the user the impression that it is a soft product.
  • the absorbent article has an elastic member around a leg that expands and contracts in the longitudinal direction at a side portion in the width direction, and the first region is the absorbent core in the width direction.
  • An absorbent article characterized in that it straddles the end of the leg and is located inside the elastic member around the leg in the width direction.
  • the user does not easily feel the hardness of the side edge in the width direction of the absorbent core, and the user can be given the impression that the absorbent article is a soft product. It is possible to prevent the elasticity of the elastic member around the leg from being reduced by many non-woven fabrics in the first region.
  • the absorbent article has an elastic member around a leg that expands and contracts in the longitudinal direction at a side portion in the width direction, and the first region is the absorbent core in the width direction.
  • An absorbent article characterized in that it straddles the end of the leg and overlaps at least a part of the elastic member around the leg in the thickness direction.
  • the user is less likely to feel the hardness of the lateral end of the absorbent core and the hardness of the leg elastic member, and the user can be given the impression that the absorbent article is a soft product. ..
  • the absorbent article has a three-dimensional gather portion that can stand up on the skin side at the side portion in the width direction, and the first region is the three-dimensional gather portion in the width direction.
  • the excrement blocked by the three-dimensional gathered portion is covered with many non-woven fabrics in the first region from the non-skin side, so that the shielding property of the excrement from the outside of the absorbent article is enhanced. ..
  • the absorbent article which is located on the non-skin side most of the plurality of nonwoven fabrics, is characterized by having a smaller coefficient of friction than the nonwoven fabric located on the skin side of the nonwoven fabric. Absorbent article.
  • the non-skin side surface of the first region becomes smooth to the touch, giving the impression that the absorbent article is a soft product. It can be given to users even more.
  • the plurality of nonwoven fabrics have a first nonwoven fabric and a second nonwoven fabric having a length in the width direction longer than the first nonwoven fabric, and the first nonwoven fabric is the first nonwoven fabric.
  • An absorbent article characterized in that it is arranged on the non-skin side of the non-woven fabric.
  • the absorbent article hits a pair of fastening tapes extending outward in the width direction from the dorsal region abutting on the dorsal portion of the wearer and the ventral portion of the wearer. It is a tape-type diaper having a target tape arranged in a contacting ventral region and to which the pair of fastening tapes engage, and the target tape extends outward in the width direction from the first nonwoven fabric.
  • the plurality of nonwoven fabrics have a first nonwoven fabric and a second nonwoven fabric having a length in the width direction longer than the first nonwoven fabric, and the first nonwoven fabric is the first nonwoven fabric.
  • An absorbent article characterized in that it is arranged on the skin side of the non-woven fabric.
  • the absorbent article is characterized in that the absorbent article has an inseam region that abuts on the inseam of the wearer, and the first region is arranged at least in the inseam region in the longitudinal direction. Absorbent article.
  • the flexibility of the inseam of the absorbent article that is easily grasped by the user is increased, so that the user can give the impression that the absorbent article is a soft product.
  • the absorbent article wherein the first region is arranged over at least the entire area of the absorbent core in the longitudinal direction.
  • the entire longitudinal direction of the absorbent core is covered with many non-woven fabrics in the first region, so that the user does not easily feel the hardness of the absorbent core, and the absorbent article is a soft product. You can give the user the impression that there is.
  • both side portions in the width direction of the dorsal region abutting the dorsal portion of the wearer and the ventral region abutting the ventral portion of the wearer form a pair of joints.
  • the dorsal region and the ventral region each have a plurality of elastic members around the waist that expand and contract in the width direction, and the first region is an elastic portion of the elastic member around the waist.
  • An absorbent article characterized by being located in a region that does not overlap with the thickness direction.
  • the absorbent article As an example of the absorbent article according to the present embodiment, a tape-type disposable diaper for children (first embodiment) and a pants-type disposable diaper (second embodiment) will be described as examples.
  • the absorbent article is not limited to the above, and examples of other absorbent articles include disposable diapers for adults, urine absorbing pads, sanitary napkins, and the like.
  • FIG. 1 is a plan view of the unfolded and stretched tape-type disposable diaper 1 (hereinafter, also referred to as “diaper”) as viewed from the skin side.
  • FIG. 2 is a plan view of the unfolded and stretched diaper 1 as viewed from the non-skin side.
  • FIG. 3 is a schematic cross-sectional view taken along the line AA in FIG.
  • the stretched state of the diaper 1 is a state in which the entire diaper 1 is stretched without wrinkles, specifically, until the dimensions of each member constituting the diaper 1 match or are close to the dimensions of the individual member. It is in an extended state.
  • the diaper 1 has a longitudinal direction, a width direction, and a thickness direction in the unfolded state shown in FIG. Further, the diaper 1 has a longitudinal region 1A that abuts on the dorsal side of the wearer, an inseam region 1B that abuts on the inseam of the wearer, and a ventral region 1C that abuts on the ventral side of the wearer. Have side by side in the direction. Further, in the thickness direction, the side that comes into contact with the wearer's skin is referred to as the skin side or the skin surface side, and the opposite side is referred to as the non-skin side or the non-skin surface side.
  • the diaper 1 has an absorbent core 10, a liquid-permeable surface sheet 2 (liquid-permeable sheet) arranged on the skin side of the absorbent core 10, and an absorbent core 10.
  • a liquid-impermeable leak-proof sheet 3 (liquid-impermeable sheet) arranged on the non-skin side of the sheet, and a plurality of sheets (two sheets in the present embodiment) arranged on the non-skin side of the leak-proof sheet 3. It has the non-woven fabrics 4 and 5 and a pair of side sheets 6 extending outward in the width direction from both sides in the width direction on the skin surface of the surface sheet 2. Adjacent materials in the thickness direction are bonded to each other with an adhesive (eg, hot melt adhesive HMA).
  • an adhesive eg, hot melt adhesive HMA
  • a liquid absorbent fiber such as a pulp fiber containing a highly absorbent polymer, which is molded into a predetermined shape
  • the absorbent core 10 may be covered with a core wrap sheet 11 such as a liquid-permeable tissue paper or a non-woven fabric.
  • examples of the absorbent core 10 include a SAP sheet in which a SAP layer is attached to a hydrophilic sheet, and an air-laid sheet in which liquid-absorbing fibers are formed into a sheet by an air-laid method.
  • the diaper 1 has a pair of three-dimensional gathered portions 20 that can stand up on the skin side on both side portions in the width direction.
  • an elastic member 21 for example, rubber thread
  • the diaper 1 has a pair of three-dimensional gathered portions 20 that can stand up on the skin side on both side portions in the width direction.
  • an elastic member 21 for example, rubber thread
  • the diaper 1 has a leg elastic member 7 that expands and contracts in the longitudinal direction on the outer side in the width direction from the three-dimensional gather portion 20.
  • the leg elastic member 7 three rubber threads are arranged on both sides of the diaper 1 in the width direction.
  • the leg elastic member 7 is not limited to the rubber thread, and may be a sheet-shaped elastic member such as an elastic film. The leg circumference elastic member 7 allows the diaper 1 to fit the wearer's leg circumference.
  • the diaper 1 has a waistline elastic member 8 that expands and contracts in the width direction in the dorsal region 1A, which is the dorsal end in the longitudinal direction.
  • the waistline elastic member 8 of the present embodiment is a sheet-like elastic member such as an elastic film, and is arranged between the surface sheet 2 and the leak-proof sheet 3 in the thickness direction, although not shown.
  • the waistline elastic member 8 allows the diaper 1 to fit around the wearer's waistline.
  • the diaper 1 has a pair of fastening tapes 30 extending from the dorsal region 1A to both outer sides in the width direction.
  • the fastening tape 30 has a tape base material 31 and a hook material 32 (for example, a male member of a hook-and-loop fastener).
  • the diaper 1 has a target tape 9 arranged on the non-skin surface of the ventral region 1C.
  • the target tape 9 is a rectangular member long in the width direction that can be engaged with the fastening tape 30, and is formed of, for example, a non-woven fabric or a female member of a hook-and-loop fastener.
  • the configuration of the above diaper 1 is an example, and is not limited to this.
  • the diaper 1 may not have the three-dimensional gather portion 20 or may not have the target tape 9.
  • FIG. 4 is an explanatory diagram of the first region R1 and the second region R2.
  • FIG. 6A and FIG. 6B are explanatory views of the high-density portion 40.
  • 7A and 7B are schematic cross-sectional views of the modified example diaper 1.
  • the diaper 1 has a plurality of non-woven fabrics 4 and 5 arranged on the non-skin side of the liquid-impermeable leak-proof sheet 3.
  • the diaper 1 of the present embodiment has a first nonwoven fabric 4 and a second nonwoven fabric 5 having different lengths in the width direction (for example, the maximum widths of each other) as the plurality of nonwoven fabrics 4 and 5.
  • the first nonwoven fabric 4 is arranged on the non-skin side in the thickness direction as compared with the second nonwoven fabric 5.
  • the first nonwoven fabric 4 has a rectangular shape long in the longitudinal direction of the diaper 1 and has a length extending from one end to the other end in the longitudinal direction of the diaper 1.
  • the second nonwoven fabric 5 has the outer shape of the diaper 1 and is longer in the width direction than the first nonwoven fabric 4.
  • the first nonwoven fabric 4 is arranged at the center in the width direction of the second nonwoven fabric 5 forming the outer shape of the diaper 1. Therefore, when the diaper 1 is viewed in a plan view in the thickness direction, the first nonwoven fabric 4 and the second nonwoven fabric 5 overlap with the absorbent core 10.
  • the diaper 1 is located outside the first region R1 that overlaps at least a part of the absorbent core 10 in the thickness direction and the first region R1 in the width direction, and overlaps with the absorbent core 10 in the thickness direction. It has a second region that does not become.
  • the region where the second nonwoven fabric 5 overlaps with the first nonwoven fabric 4 in the thickness direction is defined as the first region R1
  • the region where the second nonwoven fabric 5 does not overlap with the first nonwoven fabric 4 in the thickness direction is the first region. Let it be two regions R2. Therefore, the number of non-woven fabrics on the non-skin side of the leak-proof sheet 3 is larger in the first region R1 than in the second region R2.
  • the user touches the part of the diaper 1 where the highly rigid absorbent core 10 is located from the outside (non-skin side), the user can easily feel the hardness of the diaper 1. Therefore, as described above, in the first region R1 that overlaps with the absorbent core 10, it is preferable to laminate more non-woven fabrics on the non-skin side than the leak-proof sheet 3. By doing so, in the non-skin side portion of the first region R1, the flexibility (cushioning property) is improved by the bulky nonwoven fabric in which the two nonwoven fabrics 4 and 5 are overlapped. Therefore, the user who touches the first region R1 from the outside does not easily feel the hardness of the absorbent core 10, and easily feels the softness of the diaper 1. As a result, the user can be given the impression that the diaper 1 is a soft and comfortable product.
  • the second region R2 located outside the first region R1 in the width direction abuts on the wearer's leg circumference. Therefore, in the second region R2, it is preferable to reduce the number of non-woven fabrics arranged on the non-skin side of the leak-proof sheet 3. By doing so, the thickness of the second region R2 can be suppressed. As a result, when the wearer closes the legs or moves them back and forth, the diaper 1 is less likely to feel stiff and the discomfort of wearing the diaper is reduced.
  • the first nonwoven fabric 4 and the second nonwoven fabric 5 are air-through nonwoven fabrics.
  • the present invention is not limited to this, and other non-woven fabrics (for example, spunbonded non-woven fabric, spunbond, meltblown, spunbonded non-woven fabric, etc.) may be used, and even in that case, the flexibility of the non-skin side portion of the first region R1 is improved. be able to.
  • the number of non-woven fabrics arranged on the non-skin side of the leak-proof sheet 3 is two, but the number may be three or more.
  • the first nonwoven fabric 4 and the second nonwoven fabric 5 may be different types of nonwoven fabrics.
  • the diaper 1 has a plurality of high-density portions 40 in which the density of the fibers constituting the first nonwoven fabric 4 and the second nonwoven fabric 5 is higher than that of the surroundings.
  • the high-density portion 40 may be formed, for example, by a treatment of pressing the nonwoven fabrics 4 and 5 without heating, or by a welding treatment such as ultrasonic welding or heat welding.
  • the comparison of the fiber densities between the high density portion 40 and the surroundings can be performed by a well-known method. For example, a cross section of a portion of the diaper 1 including the high-density portion 40 cut in the thickness direction can be compared based on an enlarged image with an electron microscope or the like.
  • the high-density portion 40 located in the first region R1 where the first nonwoven fabric 4 and the second nonwoven fabric 5 overlap functions as a joining portion for joining the first nonwoven fabric 4 and the second nonwoven fabric 5.
  • the high-density portion 40 can prevent the first non-woven fabric 4 arranged on the non-skin side from peeling or floating.
  • the side portion R11 in the width direction of the first region R1 has a higher density than the central portion R12 in the width direction of the first region R1.
  • the area ratio of 40 is high. Specifically, the value (A1 / A2) obtained by dividing the total area (A1) of the high-density portion 40 located on the side portion R11 of the first region R1 by the area (A2) of the side portion R11 is the first. It is larger than the value (A3 / A4) obtained by dividing the total area (A3) of the high-density portion 40 located in the central portion R12 in the width direction of one region R1 by the area (A4) of the central portion R12.
  • the side portion R11 of the first region R1 corresponds to the side portion in the width direction of the narrow first nonwoven fabric 4. Therefore, by increasing the area ratio of the high-density portion 40 in the side portion R11 of the first region R1, the side portion of the first nonwoven fabric 4 is less likely to be peeled off.
  • the first nonwoven fabric 4 is arranged on the non-skin side of the second nonwoven fabric 5, the side edge 4a in the width direction of the first nonwoven fabric 4 is exposed and easily peeled off, so that it is high as described above. It is preferable to arrange the density portion 40.
  • the high-density portion 40 is harder than the surroundings.
  • the central portion R12 of the first region R1 it is preferable to lower the area ratio of the high-density portion 40. By doing so, it is possible to prevent the flexibility of the first region R1 from being lowered due to the stacking of the two nonwoven fabrics 4 and 5, and it is possible to give the user the impression that the diaper 1 is a soft product.
  • the side portion R11 of the first region R1 is a region having a predetermined width inward in the width direction from the side edge R1a of the first region R1 (first nonwoven fabric 4).
  • the central portion R12 of the first region R1 is a region having the predetermined width inside the side portion R11 in the width direction.
  • the predetermined width is set to a width of 1/3 or less of the width of the first region R1.
  • the area ratio of the high-density portion 40 may be compared visually, or the area of each portion may be measured by using the area measurement software for the image data obtained by photographing the target portion of the first region R1. It may be calculated.
  • the width W1 (see FIG. 5) of the region where the area ratio of the high-density portion 40 is high is set to about 1/13 to 1/14 of the width of the first region R1, and is high in the region inside the region.
  • the area ratio of the density portion 40 is lowered. By doing so, flexibility is maintained over a wider range in the width direction of the first region R1.
  • the side portion R11 in the width direction of the first region R1 has a larger number of high-density portions 40 arranged than the central portion R12 in the width direction of the first region R1, and the high-density portion It is preferable that the minimum interval of 40 is small. That is, as shown in FIG. 5, it is preferable that many high-density portions 40 having a relatively small area are densely arranged on the side portion R11 of the first region R1. By doing so, even if the area ratio is the same, the user can visually and tactilely adjust the hardness of the side portion R11 as compared with the case where the high-density portions 40 having a large area are dispersedly arranged. It's hard to feel. In addition, the first nonwoven fabric 4 is difficult to peel off over a wide area.
  • a small number of high-density portions 40 may be sparsely arranged. By doing so, the flexibility of the first region R1 is maintained.
  • the high-density portion 40 (cross-shaped or flower-shaped high-density portion 40) is staggered inside the side portion R11 of the first region R1 in the width direction. It is arranged in a shape. Therefore, the non-skin surface of the first region R1 becomes uneven like a quilted cloth, and the user can visually give the impression that the diaper 1 is a soft product.
  • the high-density portion 40 is also provided at the end portion in the width direction of the second region R2 adjacent to the first region R1.
  • the diaper 1 has a high-density portion 401 straddling the side edge R1a in the width direction of the first region R1 (first nonwoven fabric 4) in the width direction.
  • the side edge 4a in the width direction of the narrow first nonwoven fabric 4 is fixed to the second nonwoven fabric 5 by the high-density portion 401, so that the peeling of the first nonwoven fabric 4 can be further prevented.
  • the high-density portion 40 is similarly arranged not only in the width direction but also in the longitudinal direction. That is, as shown in FIG. 5, the value obtained by dividing the total area of the high-density portion 40 located at the end portion R13 in the longitudinal direction of the first region R1 by the area of the end portion R13 is the longitudinal length of the first region R1. It is preferable that it is larger than the value obtained by dividing the total area of the high-density portion 40 located in the central portion R14 in the direction by the area of the central portion R14.
  • the end portion R13 in the longitudinal direction of the first region R1 has a larger number of high-density portions 40 arranged than the central portion R14 in the longitudinal direction of the first region R1, and the high-density portion It is preferable that the minimum interval of 40 is small.
  • the flexibility of the first region R1 can be maintained while making it difficult for the end portion R13 of the first nonwoven fabric 4 in the longitudinal direction to be peeled off.
  • the longitudinal end R13 of the first region 4 by densely arranging many high-density portions 40 having a relatively small area, the user can visually and tactilely arrange the hardness of the end R13. It becomes difficult to feel the hardness.
  • the first nonwoven fabric 4 is difficult to peel off over a wide area.
  • the longitudinal end R13 of the first region R1 is a region having a predetermined width from the longitudinal end R1b of the first region R1 (first nonwoven fabric 4) to the central side in the longitudinal direction.
  • the central portion R14 in the longitudinal direction of the first region R1 is a region having the predetermined width on the central side in the longitudinal direction with respect to the end portion R13.
  • the predetermined width is set to a length of 1/3 or less of the length of the first region R1.
  • the side portion R11 in the width direction of the first region R1 is provided with a high-density portion 40 in the shape of a circle or a flower, whereas the end portion R13 in the longitudinal direction of the first region R1 is provided.
  • a rectangular high-density portion 402 is provided.
  • the diaper 1 of the present embodiment has a waistline elastic member 8 that expands and contracts in the width direction in the dorsal region 1A. In this case, as shown in FIGS. 5 and 6B, in the region where the waistline elastic member 8 is arranged, high-density portions 402 having a shape longer in the longitudinal direction than in the width direction are arranged side by side at intervals in the width direction. good.
  • the rows of the high-density portions 402 in which the rectangular high-density portions 402 are arranged at intervals in the longitudinal direction may be arranged side by side at intervals in the width direction.
  • rectangular high-density portions 402 are spaced apart in the width direction. It should be arranged side by side. By doing so, the vertical wrinkles formed by the rectangular high-density portion 402 reach the longitudinal end of the absorbent core 10. That is, since the vertical rigidity of the region between the waistline elastic member 8 and the absorbent core 10 is also improved, the diaper 1 is hard to break starting from the ends 8a and 10a of the waistline elastic member 8 and the absorbent core 10, and the appearance of the diaper 1 Is improved.
  • the waistline elastic member 8 in the region on the ventral side in the longitudinal direction where the waistline elastic member 8 is not arranged, it is preferable to make the region where the high-density portion 402 is densely arranged as small as possible. By doing so, flexibility is maintained over a wide area on the ventral side of the first region R1 in the longitudinal direction.
  • the first nonwoven fabric 4 and the second nonwoven fabric 5 may be bonded together with the high-density portion 40 by an adhesive (for example, hot melt adhesive HMA).
  • an adhesive for example, hot melt adhesive HMA
  • HMA hot melt adhesive
  • the coating pattern of the adhesive HMA may be an entire surface arrangement (so-called solid coating), or may be coated with various known coating patterns such as a stripe pattern and a dot pattern.
  • the floating of the first nonwoven fabric 4 with respect to the second nonwoven fabric 5 can be suppressed, and the appearance of the diaper 1 is improved.
  • the visibility of the design print (not shown) and the indicator (not shown) indicating excretion on the material on the skin side is improved as compared with the first non-woven fabric 4.
  • the application range of the adhesive HMA of the first nonwoven fabric 4 is not limited to the entire area, and may be a part thereof.
  • the first nonwoven fabric 4 and the second nonwoven fabric 5 are preferably bonded to each other by the high-density portion 40 and the adhesive HMA. .. By doing so, the bonding strength of the end portion of the first nonwoven fabric 4 is increased, and the peeling of the first nonwoven fabric 4 can be further suppressed.
  • the first nonwoven fabric 4 and the second nonwoven fabric 5 are joined to the high-density portion 40 by the adhesive HMA.
  • the first nonwoven fabric 4 and the second nonwoven fabric 5 are integrally shrunk to form beautiful gathers.
  • the first nonwoven fabric 4 and the second nonwoven fabric 5 are joined to the high-density portion 40 by the adhesive HMA.
  • the adhesive HMA between the first nonwoven fabric 4 and the second nonwoven fabric 5 should be applied thinly.
  • the adhesive HMA between the first nonwoven fabric 4 and the second nonwoven fabric 5 may have a smaller basis weight (mass per unit area) than the adhesive HMA to which other materials of the diaper 1 are bonded. .. By doing so, the flexibility of the first region R1 is maintained.
  • the arrangement and shape of the high-density portion 40 are not limited to those described above (the pattern shown in FIG. 5).
  • the diaper 1 does not have to have the high-density portion 40, and for example, the first nonwoven fabric 4 and the second nonwoven fabric 5 may be simply joined by the adhesive HMA.
  • the basis weight of the adhesive HMA may be increased as compared with the other regions.
  • the first region R1 (first nonwoven fabric 4) is located straddling the ends 10a and 10b of the absorbent core 10 in at least one of the width direction and the longitudinal direction.
  • the first region R1 of the present embodiment is located so as to straddle the ends 10a and 10b of the absorbent core 10 in both the width direction and the longitudinal direction.
  • the ends 10a and 10b of the absorbent core 10 are covered from the non-skin side with two non-woven fabrics 4 and 5 (bulky cushioning non-woven fabric), so that the user who touches the diaper 1 from the outside can use it. It is difficult to feel the step (hard part of the edge) at the ends 10a and 10b of the absorbent core 10. Therefore, the user can be given the impression that the diaper 1 is a soft product.
  • the first region R1 (first nonwoven fabric 4) is located outside the width direction side end 10a of the absorbent core 10 in the width direction, but is located outside the leg circumference elastic member 7. Is located inside in the width direction.
  • the leg elastic member 7 does not overlap with the two non-woven fabrics 4 and 5 in the thickness direction, it is possible to prevent the elasticity of the leg elastic member 7 from being reduced. Therefore, the diaper 1 can be firmly fitted around the wearer's legs.
  • the length of the first nonwoven fabric 4 in the width direction is increased so that the first region R1 (first nonwoven fabric 4) is at least a part of the leg-surrounding elastic member 7. May overlap in the thickness direction.
  • the leg circumference elastic member 7 is covered from the non-skin side with two non-woven fabrics 4 and 5 (bulky cushioning non-woven fabric), the user who touches the diaper 1 from the outside can use the leg circumference elastic member 7. It is hard to feel the hardness. Therefore, the user can be given the impression that the diaper 1 is a soft product.
  • the diaper 1 of the present embodiment has a three-dimensional gather portion 20.
  • the three-dimensional gather portion 20 has a first fixing portion 22 and a second fixing portion 23 in which the side sheet 6 is fixed to the skin surface of the surface sheet 2 with an adhesive or the like.
  • the first fixing portion 22 is continuously provided from one end to the other end of the side sheet 6 in the longitudinal direction.
  • the second fixing portion 23 is inside the first fixing portion 22 in the width direction, and is provided at both ends in the longitudinal direction of the diaper 1.
  • a plurality of (three in this case) second fixing portions 23 having a short length are provided at each end portion in the longitudinal direction of the diaper 1 at intervals in the width direction.
  • a portion of the side sheet 6 located inside the first fixing portion 22 in the width direction and inside the second fixing portion 23 in the longitudinal direction serves as an upright portion of the three-dimensional gather portion 20.
  • the first region R1 may be located outside the standing starting point 20a of the three-dimensional gathered portion 20 in the width direction (inner end in the width direction of the first fixed portion 22).
  • the excrement blocked by the three-dimensional gather portion 20 is covered with the two non-woven fabrics 4 and 5 from the non-skin side, so that the shielding property of the excrement from the outside of the diaper 1 is improved, and the shielding property of the excrement from the outside of the diaper 1 is improved. Exudation of excrement can be suppressed.
  • the standing starting point 20a of the three-dimensional gather portion 20 in the width direction is located outside the side end 10a in the width direction of the absorbent core 10. Therefore, it is possible to enhance the shielding property of the excrement that has flowed to the outside in the width direction of the absorbent core 10 and suppress the exudation.
  • the arrangement position of the first region R1 in the width direction is not limited to the above.
  • the first region R1 may overlap with at least a part of the absorbent core 10 in the width direction in the thickness direction.
  • the first nonwoven fabric 4 has a length extending from one end to the other end in the longitudinal direction of the diaper 1.
  • the length of the first nonwoven fabric 4 may be shorter than the length of the diaper 1 (that is, the length of the second nonwoven fabric 5 forming the outer shape).
  • the first region R1 (first nonwoven fabric 4) is arranged at least in the inseam region 1B of the diaper 1 in the longitudinal direction.
  • the tape-type diaper 1 is distributed in a state of being folded in half in the longitudinal direction. Therefore, when the diaper 1 is taken out from the package, the inseam region 1B of the diaper 1 is easily grasped by the user. Therefore, by increasing the flexibility (cushioning property) of the inseam region 1B of the diaper 1 with the two non-woven fabrics 4 and 5, the softness of the diaper 1 can be felt by the user.
  • the first region R1 may be distributed over at least the entire area of the absorbent core 10 in the longitudinal direction.
  • the entire area of the highly rigid absorbent core 10 is covered from the non-skin side with two non-woven fabrics 4 and 5 (bulky cushioning non-woven fabric), and the user feels the hardness of the absorbent core 10. It becomes difficult.
  • the first region R1 (first nonwoven fabric 4) is located so as to straddle the longitudinal end 10b of the absorbent core 10.
  • the arrangement position of the first region R1 in the longitudinal direction is not limited to the above.
  • the first region R1 may overlap with at least a part of the absorbent core 10 in the longitudinal direction in the thickness direction.
  • the inseam region 1B of the diaper 1 is a region having a predetermined width including the center line Cl in the longitudinal direction of the diaper 1 in a state of being unfolded in the longitudinal direction.
  • the absorbent core 10 of the present embodiment has an hourglass shape in which the central portion in the longitudinal direction is confined inward in the width direction. Therefore, the region where the absorbent core 10 is constricted (the region slightly biased to the ventral side including the central line Cl in the longitudinal direction) is defined as the inseam region 1B.
  • the central region obtained by dividing the diaper 1 into three in the longitudinal direction may be referred to as the inseam region 1B.
  • the first non-woven fabric 4 having a shorter length in the width direction is arranged on the non-skin side (outside) of the second non-woven fabric 5. Therefore, it is possible to prevent the first nonwoven fabric 4 from being pushed by the second nonwoven fabric 5, which is long in the width direction, from the non-skin side, and the bulk (flexibility, cushioning property) of the first nonwoven fabric 4 is reduced. Therefore, the flexibility of the first region R1 can be efficiently obtained by stacking the two nonwoven fabrics 4 and 5.
  • the first nonwoven fabric 4 having a shorter length in the width direction may be arranged on the skin side (inside) than the second nonwoven fabric 5.
  • the first nonwoven fabric 4 since the side end of the first nonwoven fabric 4 in the width direction is not exposed to the outside, the first nonwoven fabric 4 is less likely to be peeled off.
  • the non-skin surface of the diaper 1 becomes a smooth surface, it is possible to visually give the user the impression that the diaper 1 is a soft product.
  • the target tape 9 extends outward in the width direction from the first nonwoven fabric 4.
  • the side end 4a in the width direction of the first nonwoven fabric 4 is pressed by the target tape 9 from the non-skin side. Therefore, even when the fastening tape 30 engaged with the target tape 9 is removed, the first nonwoven fabric 4 is less likely to be peeled off.
  • the present invention is not limited to the above, and the target tape 9 may not extend outward in the width direction from the first nonwoven fabric 4.
  • the nonwoven fabric (first nonwoven fabric 4 of the present embodiment) located on the most non-woven fabric side among the plurality of nonwoven fabrics arranged on the non-woven fabric side of the leak-proof sheet 3 is more than the nonwoven fabric (first nonwoven fabric 4). It is preferable that the coefficient of friction is smaller than that of the non-woven fabric (second non-woven fabric 5 of the present embodiment) located on the skin side.
  • the average fiber diameter of the first nonwoven fabric 4 in the outermost layer may be smaller than the average fiber diameter of the second nonwoven fabric 5. It should be noted that all the fiber diameters of the first nonwoven fabric 4 are not limited to be smaller than all the fiber diameters of the second nonwoven fabric 5.
  • the first nonwoven fabric 4 is composed of a plurality of layers having different fiber diameters, and the fiber diameter of the non-skin side layer of the first nonwoven fabric 4 is made smaller than the fiber diameter of the skin side layer of the first nonwoven fabric 4.
  • the fiber diameter of the non-skin side layer of the first nonwoven fabric 4 may be smaller than the fiber diameter of the second nonwoven fabric 5.
  • the bulk (cushioning property) of the first nonwoven fabric 4 is maintained while smoothing the non-skin surface of the first nonwoven fabric 4 that is touched by the user.
  • the fiber diameter of the skin-side layer of the first nonwoven fabric 4 may be equal to or less than the fiber diameter of the second nonwoven fabric 5.
  • the nonwoven fabric is a spunbonded nonwoven fabric, it is advisable to impart a lubricant to the fibers constituting the first nonwoven fabric 4 of the outermost layer.
  • the non-skin surface of diaper 1 (first region R1) becomes smooth to the touch. Therefore, the user who touches the diaper 1 from the outside can feel the softness and smoothness of the diaper 1, and the user can be given the impression that the diaper 1 is a soft and comfortable product.
  • the coefficient of friction can be compared by a well-known method. For example, it may be compared with the characteristic value of KES manufactured by Kato Tech Co., Ltd., which is generally known as the characteristic value representing the feel of the surface of the sheet.
  • the first non-woven fabric 4 and the second non-woven fabric 5 are separated from the diaper 1, a sample of a predetermined size (for example, 1.0 ⁇ 1.0 cm) is cut out from each of the non-woven fabrics 4 and 5, and a smooth metal flat surface test is performed. Place it on a table and measure with KES-FB4 manufactured by Kato Tech Co., Ltd.
  • a force of 50 gf is applied to a contactor in which 10 piano wires having a diameter of 0.5 mm are arranged by a weight to crimp the contact surface of the contactor to the sample.
  • the sample is moved horizontally 2 cm at a rate of 0.1 cm / sec and a uniaxial tension of 20 gf / cm is applied to the sample.
  • the characteristic values in two orthogonal directions can be measured, and the average value can be compared as the friction coefficient of each sample.
  • the thicknesses of the first nonwoven fabric 4 and the second nonwoven fabric 5 may be the same or different.
  • the flexibility (cushioning property) of the non-woven fabric directly touched by the user is increased. Therefore, the softness of the diaper 1 can be felt by the user.
  • the thickness of the non-woven fabric on the skin side and which forms the outer shape of the diaper 1 is increased as in the second non-woven fabric 5 of the present embodiment, the flexibility of the second region R2 in which the number of laminated non-woven fabrics is small is also increased. It will increase. Therefore, no matter which part of the diaper 1 is touched by the user, the user can feel the softness of the diaper 1.
  • the thicknesses of the first nonwoven fabric 4 and the second nonwoven fabric 5 can be compared by a well-known method. For example, the first non-woven fabric 4 and the second non-woven fabric 5 are separated from the diaper 1. Then, using a dial thickness gauge ID-C1012C manufactured by Mitutoyo Co., Ltd. or an equivalent one, the values measured by pressurizing each non-woven fabric 4 and 5 at, for example, 3.0 gf / cm 2 can be obtained and compared.
  • FIG. 8A is a schematic perspective view of the pants-type diaper 50
  • FIG. 8B is a plan view of the pants-type diaper 50 in an expanded and extended state as viewed from the non-skin side.
  • the absorbent article has a pair of joints 51 on both sides in the width direction of the dorsal region 50A that abuts on the dorsal portion of the wearer and the ventral region 50B that abuts on the ventral portion of the wearer. It may be a joined pants-type diaper 50.
  • the pants-type diaper 50 has a longitudinal direction, a width direction, and a thickness direction in a state where the dorsal region 50A and the ventral region 50B are separated by breaking the joint of the pair of joint portions 51.
  • the pants-type diaper 50 exemplified in the second embodiment has an absorbent main body 52 and an exterior member 53 arranged on the non-skin side of the absorbent main body 52.
  • the absorbent body 52 includes at least a liquid-permeable surface sheet, a liquid-impermeable leak-proof sheet, and an absorbent core 521 arranged between them.
  • the exterior member 53 is arranged between the first nonwoven fabric 531 arranged on the most non-skin side, the two second nonwoven fabrics 532 forming the outer shape of the pants-type diaper 50, and the two second nonwoven fabrics 532. It has a plurality of waistline elastic members 533 that expand and contract in the width direction.
  • a plurality of non-woven fabrics are arranged on the non-skin side of the leak-proof sheet of the absorbent main body 50.
  • the first nonwoven fabric 531 has a shorter width than the second nonwoven fabric 532, and is arranged at a position overlapping with the absorbent core 521 in the thickness direction. Therefore, in the pants-type diaper 50, three non-woven fabrics 531 and 532 are laminated in the first region R1 that overlaps the absorbent core 521 in the thickness direction.
  • the second region R2 which is located outside the first region R1 in the width direction and does not overlap the absorbent core 10 in the thickness direction, two nonwoven fabrics 532 are laminated. Therefore, the user who touches the first region R1 from the outside can hardly feel the hardness of the absorbent core 521 and can feel the flexibility (cushioning property) of the diaper 1. On the other hand, in the second region R2 that comes into contact with the wearer's leg circumference, the number of laminated non-woven fabrics is small, so that the feeling of discomfort in wearing is reduced.
  • a plurality of waistline elastic members 533 are arranged at intervals in the longitudinal direction in the dorsal region 50A and the ventral region 50B of the pants-type diaper 50.
  • the waistline elastic member 533 may not exhibit elasticity in a region overlapping the absorbent core 521 in the thickness direction (for example, the waistline elastic member 533 may not be provided or may be cut). By doing so, it is possible to prevent the absorbent core 521 from being deformed by the waistline elastic member 533, and the adhesion between the wearer and the absorbent core 521 is improved.
  • FIG. 8B shows only the stretchable portion in which the stretchability of the waistline elastic member 533 is exhibited.
  • the first region R1 (first nonwoven fabric 531) is located in a region that does not overlap with the elastic portion of the waist circumference elastic member 533 in the thickness direction. By doing so, it is possible to prevent the elastic force of the waist circumference elastic member 533 from being reduced by the first region R1 in which many non-woven fabrics 531 and 532 are laminated. Therefore, the pants-type diaper 50 can be firmly fitted around the wearer's waist.

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  • Absorbent Articles And Supports Therefor (AREA)

Abstract

L'invention concerne un article absorbant (1) comportant un noyau absorbant (10), un voile perméable aux liquides (2) disposé du côté peau par rapport au noyau absorbant (10), et un voile imperméable aux liquides (3) disposé du côté situé à l'opposé de la peau par rapport au noyau absorbant (10), l'article absorbant (1) comportant une première région (R1) sur laquelle est disposée une pluralité de tissus non tissés (4, 5) du côté situé à l'opposé de la peau par rapport au voile imperméable aux liquides (3) et qui chevauche au moins une partie du noyau absorbant (10) dans le sens de l'épaisseur, et une seconde région (R2) qui est positionnée du côté extérieur dans le sens de la largeur de la première région (R1) et qui ne chevauche pas le noyau absorbant (10) dans le sens de l'épaisseur, le nombre de tissus non tissés (4, 5) disposés dans la première région (R1) étant supérieur au nombre de tissus non tissés (4, 5) disposés dans la seconde région.
PCT/JP2021/041349 2020-12-28 2021-11-10 Article absorbant WO2022145133A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202011581602.2 2020-12-28
CN202011581602.2A CN114522026B (zh) 2020-12-28 2020-12-28 吸收性物品

Publications (1)

Publication Number Publication Date
WO2022145133A1 true WO2022145133A1 (fr) 2022-07-07

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2021/041349 WO2022145133A1 (fr) 2020-12-28 2021-11-10 Article absorbant

Country Status (2)

Country Link
CN (1) CN114522026B (fr)
WO (1) WO2022145133A1 (fr)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012095845A (ja) * 2010-11-02 2012-05-24 Kao Corp 使い捨ておむつ
WO2016031850A1 (fr) * 2014-08-29 2016-03-03 株式会社瑞光 Article pouvant être porté jetable et son procédé de fabrication

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018051519A1 (fr) * 2016-09-16 2018-03-22 ユニ・チャーム株式会社 Article absorbant
CN111867536B (zh) * 2018-03-20 2022-04-08 尤妮佳股份有限公司 吸收性物品
CN211633931U (zh) * 2019-07-31 2020-10-09 尤妮佳股份有限公司 吸收性物品的包装体

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012095845A (ja) * 2010-11-02 2012-05-24 Kao Corp 使い捨ておむつ
WO2016031850A1 (fr) * 2014-08-29 2016-03-03 株式会社瑞光 Article pouvant être porté jetable et son procédé de fabrication

Also Published As

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CN114522026B (zh) 2023-09-19
CN114522026A (zh) 2022-05-24

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