WO2013094334A1 - パンツ型吸収性物品 - Google Patents

パンツ型吸収性物品 Download PDF

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Publication number
WO2013094334A1
WO2013094334A1 PCT/JP2012/079143 JP2012079143W WO2013094334A1 WO 2013094334 A1 WO2013094334 A1 WO 2013094334A1 JP 2012079143 W JP2012079143 W JP 2012079143W WO 2013094334 A1 WO2013094334 A1 WO 2013094334A1
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WO
WIPO (PCT)
Prior art keywords
sheet member
absorbent article
seat member
abdominal
main body
Prior art date
Application number
PCT/JP2012/079143
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
佐々木　純
Original Assignee
花王株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 花王株式会社 filed Critical 花王株式会社
Priority to CN201290000999.4U priority Critical patent/CN204192873U/zh
Priority to RU2014128326/12U priority patent/RU150850U1/ru
Publication of WO2013094334A1 publication Critical patent/WO2013094334A1/ja

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/45—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape
    • A61F13/49—Absorbent articles specially adapted to be worn around the waist, e.g. diapers
    • A61F13/496—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
    • A61F13/45—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
    • A61F13/49001—Absorbent articles specially adapted to be worn around the waist, e.g. diapers having preferential bending zones, e.g. fold lines or grooves
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/45—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape
    • A61F13/49—Absorbent articles specially adapted to be worn around the waist, e.g. diapers
    • A61F13/49007—Form-fitting, self-adjusting disposable diapers
    • A61F13/49009—Form-fitting, self-adjusting disposable diapers with elastic means
    • A61F13/49011—Form-fitting, self-adjusting disposable diapers with elastic means the elastic means is located at the waist region
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/45—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape
    • A61F13/49—Absorbent articles specially adapted to be worn around the waist, e.g. diapers
    • A61F13/49007—Form-fitting, self-adjusting disposable diapers
    • A61F13/49009—Form-fitting, self-adjusting disposable diapers with elastic means
    • A61F13/4902—Form-fitting, self-adjusting disposable diapers with elastic means characterised by the elastic material
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/45—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape
    • A61F13/49—Absorbent articles specially adapted to be worn around the waist, e.g. diapers
    • A61F13/49007—Form-fitting, self-adjusting disposable diapers
    • A61F13/49009—Form-fitting, self-adjusting disposable diapers with elastic means
    • A61F13/4902—Form-fitting, self-adjusting disposable diapers with elastic means characterised by the elastic material
    • A61F2013/49025—Form-fitting, self-adjusting disposable diapers with elastic means characterised by the elastic material having multiple elastic strands
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/45—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape
    • A61F13/49—Absorbent articles specially adapted to be worn around the waist, e.g. diapers
    • A61F13/49007—Form-fitting, self-adjusting disposable diapers
    • A61F13/49009—Form-fitting, self-adjusting disposable diapers with elastic means
    • A61F13/4902—Form-fitting, self-adjusting disposable diapers with elastic means characterised by the elastic material
    • A61F2013/49036—Form-fitting, self-adjusting disposable diapers with elastic means characterised by the elastic material having a inelastic zone by deactivating the elastic property

Definitions

  • the present invention relates to a pants-type absorbent article such as a disposable diaper.
  • Patent Documents 1 and 2 include, as such a pant-type absorbent article, an annular elastic belt composed of a front belt portion and a rear belt portion, an absorbent main body, and a rear belt portion (back seat member).
  • the pull-on garment of Patent Document 1 has a buttock cover in which the rear belt part extends downward from the side seal part, and the buttock cover also has elasticity, so that the vicinity of the lower end of the side seal part is on the rear belt part side.
  • the lower end of the front belt portion tends to be pulled.
  • the lower end of the front belt portion may hit the wearer's front ridge portion strongly, leaving a mark on the wearer's skin or making it difficult to move the leg.
  • both the abdominal seat member and the back seat member are extended downward from the side seal portion, the morphological difference between the abdominal seat member and the back seat member is reduced, so that the front and rear of the diaper can be visually observed. Difficult to distinguish.
  • the present invention relates to a pants-type absorbent article that can be easily distinguished before and after wearing, and hardly wears a mark on the wearer's throat when worn.
  • the present invention includes an abdominal sheet member disposed on the abdomen side of the wearer, a back sheet member disposed on the back side of the wearer, and spanning and fixing to the abdomen sheet member and the dorsal sheet member.
  • This is a pants-type absorbent article comprising a vertically long absorbent main body.
  • a pair of side seal portions, a waist opening portion, and a pair of leg opening portions are formed by joining both side edge portions of the abdominal side sheet member and both side edge portions of the back side seat member. Is formed.
  • each of the original instant seat member and the back side seat member has an extending portion extending downward from the side seal portion, and a plurality of elastic members are laterally disposed in each extending portion.
  • Each extending portion is stretchable in the transverse direction, and in the contracted state, the width of the extending portion of the ventral sheet member is the back seat.
  • the present invention provides a pant-type absorbent article that is narrower than the width of the extending portion of the member.
  • FIG. 1 is a plan view showing a wearing state of a pants-type disposable diaper according to an embodiment of the present invention.
  • FIG. 2 is a plan view showing a state (natural state) before wearing the pants-type disposable diaper shown in FIG.
  • FIG. 3 is a partially broken plan view showing a developed and extended state of the pants-type disposable diaper shown in FIG. 1.
  • the expanded and extended state means that the side seal part is peeled off to make the pant-type absorbent article in an expanded state, and the expanded absorbent member is stretched to the elastic member of each part, and the design dimensions (influence of the elastic member) Is the same as the dimension when the sheet is expanded in a flat state with all of the above removed.
  • FIG. 1 is a plan view showing a wearing state of a pants-type disposable diaper according to an embodiment of the present invention.
  • FIG. 2 is a plan view showing a state (natural state) before wearing the pants-type disposable diaper shown in FIG.
  • FIG. 3 is a partially broken plan view showing a developed and
  • FIG. 4 is a partially broken enlarged view of the stretched state in which the abdomen side of the pants-type disposable diaper shown in FIG. 1 is viewed from the outer side of the diaper.
  • FIG. 5 is a partially broken enlarged view of the stretched state of the back side of the pants-type disposable diaper shown in FIG. 1 as viewed from the outer side of the diaper.
  • 6 is a diagram showing a cross section along the diaper lateral direction of each stretchable part in the pants-type disposable diaper shown in FIG. 1, (a) is a state in which the elastic member is extended to eliminate wrinkles, and (b) is It is a figure which shows the state in which the elastic member contracts and the wrinkle is formed.
  • FIG. 7 is a view showing a usage state (wearing state) of the pants-type disposable diaper shown in FIG. 1, (a) is a view seen from the abdominal side, and (b) is a view seen from the side. (C) is the figure seen from the back side part side.
  • a pants-type disposable diaper 1 (hereinafter also referred to as diaper 1) according to an embodiment of the present invention, as shown in FIG. 1 and FIG.
  • diaper 1 Comprising a dorsal sheet member 2B disposed on the back side of the person, and a vertically long absorbent main body 3 that is secured to the ventral sheet member 2A and the dorsal sheet member 2B.
  • the side edges 2a, 2a and the side edges 2b, 2b of the back seat member 2B are joined to form a pair of side seal parts 4, 4, a waist opening 5, and a pair of leg openings 6, 6. ing.
  • the ventral sheet member 2 ⁇ / b> A has a length La in the longitudinal direction X of the diaper (absorbent article) longer than the length L ⁇ b> 4 in the same direction of the side seal portion 4 and below the side seal portion 4. It has an abdominal extension portion 21a extending downward (downward when worn). Further, the length Lb of the diaper (absorbent article) in the longitudinal direction X of the back seat member 2B is longer than the length L4 of the side seal portion 4 in the same direction, and is lower than the side seal portion 4 (lower when worn) ) To the back side extending portion 21b.
  • the diaper 1 is, as shown in FIGS. 1 and 3, when worn, the abdominal side A disposed on the wearer's ventral side and the dorsal side portion disposed on the back side of the wearer. B and a crotch part C located between the ventral part A and the dorsal part B and arranged in the crotch part of the wearer.
  • the longitudinal direction of the diaper (absorbent article) 1 is a direction extending from the abdominal side A to the back side B through the crotch C, or the opposite direction (X direction in FIG. 3).
  • the horizontal direction is a direction along the wearer's waistline direction, and is a direction (Y direction in FIG. 3) that intersects the vertical direction of the diaper (absorbent article) 1.
  • the absorbent main body 3 of the diaper 1 includes a liquid-permeable top sheet 31, a liquid-impermeable or water-repellent back sheet 32, and a liquid holding member disposed between both sheets 31 and 32. It is formed in a rectangular shape that is long in the X direction.
  • the absorbent body 33 is composed of an absorbent core made of an aggregate of fibers such as pulp fibers (may be a non-woven fabric) or an absorbent core in which water-absorbing polymer particles are held, and the absorbent core covered. A core wrap sheet (not shown).
  • the absorber 33 is also formed in a rectangular shape that is long in the X direction.
  • Absorbent body 33 has low-rigidity portions 33d on both sides along the longitudinal direction, in which the forming material of the absorbent core does not exist or the basis weight of the forming material is less than that of other portions.
  • Each low-rigidity portion 33d is formed long in the X direction. Since the absorber 33 is easily bent at the low-rigidity portion 33d, both sides of the absorber 33 or the absorbent main body 3 are easily raised toward the wearer's skin when the diaper is worn.
  • side cuffs 34 and 34 made of a liquid-resistant or water-repellent and breathable material are formed on both sides along the longitudinal direction of the absorbent main body 3.
  • a side cuff elastic member 35 is arranged in an extended state. While the diaper 1 is worn, the lateral cuff elastic member 35 contracts, so that the lateral cuff 34 stands and the liquid main body 3 is prevented from flowing out in the lateral direction (Y direction).
  • the absorptive core and core wrap sheet of the top sheet 31, the back sheet 32, and the absorber 33 the same ones conventionally used for this type of absorbent article can be used.
  • an exterior sheet such as a non-woven fabric or a film can be disposed on the back sheet 32.
  • the ventral sheet member 2A has a horizontally long rectangular shape when the diaper 1 is expanded and extended (see FIG. 3), and a pair of left and right side edge portions 2a, 2a along the diaper longitudinal direction (X direction); It has a pair of upper and lower end edges 2c, 2d (upper end edge 2c, lower end edge 2d) along the diaper lateral direction (Y direction).
  • the back side seat member 2B has a horizontally long rectangular shape, a pair of left and right side edges 2b and 2b along the diaper longitudinal direction (X direction), and a pair of upper and lower sides along the diaper lateral direction (Y direction). End edges 2c and 2d. As shown in FIG.
  • the ventral seat member 2 ⁇ / b> A and the back seat member 2 ⁇ / b> B have the same shape and the same size, the diaper longitudinal direction (X direction) is uniform, and the diaper lateral direction (Y direction). Is also uniform in length.
  • the abdominal sheet member 2A is joined to the side edge portions 2a, 2a between the abdominal sheet member 2A and the back sheet member 2B to form a side seal portion 4. And a non-joining portion 2a "that extends below the joining portion 2a 'and is not joined between the abdominal sheet member 2A and the back seat member 2B.
  • the back side seat member 2B is joined to the side edge portions 2b, 2b between the back side seat member 2B and the abdominal side seat member 2A, and the side seal portion 4 And a non-joined portion 2b "extending below the joined portion 2b 'and not joined between the back seat member 2B and the ventral seat member 2A.
  • the diaper 1 is formed with the pair of side seal portions 4 and 4 described above.
  • a known bonding method such as heat sealing, high frequency sealing, ultrasonic sealing, or adhesive is used.
  • a waist opening 5 and a pair of leg openings 6 and 6 are formed by this joining, as well as the side seal parts 4 and 4.
  • the ventral sheet member 2 ⁇ / b> A has an extending portion 21 a that extends downward from the side seal portion 4. More specifically, the abdominal sheet member 2A is disposed between a body portion 20a (hereinafter referred to as the abdominal body portion 20a) located between the joint portions 2a ′ and 2a ′ and below the body portion 20a (on the crotch C side). It has a rectangular extension portion 21a (hereinafter also referred to as a ventral extension portion 21a) that extends. Similarly, as shown in FIG. 3, the back seat member 2 ⁇ / b> B has an extending portion 21 b that extends downward from the side seal portion 4.
  • the abdominal body portion 20a located between the joint portions 2a ′ and 2a ′ and below the body portion 20a (on the crotch C side). It has a rectangular extension portion 21a (hereinafter also referred to as a ventral extension portion 21a) that extends.
  • the back seat member 2 ⁇ / b> B has an extending
  • the back side seat member 2B is also disposed on the main body 20b (hereinafter referred to as the back side main body 20b) located between the joints 2b 'and 2b' and below the main body 20a (on the crotch C side). It has a rectangular extension part 21b (hereinafter also referred to as a back extension part 21b) that extends.
  • the joint portion 2a ′ and the non-joint portion 2a ′′ of the side edge portion 2a of the ventral sheet member 2A continuously extend in the diaper longitudinal direction (X direction) when the diaper is expanded and extended (see FIG. 3). Further, the joining portion 2b ′ and the non-joining portion 2b ′′ of the side edge 2b of the back seat member 2B are also in the longitudinal direction (X direction) of the diaper when the diaper is expanded and extended (see FIG. 3). It extends continuously.
  • FIG. 7 shows a state where the infant's trunk 7a is inserted into the waist opening 5 and the infant's legs 7b and 7b are inserted through the leg openings 6 and 6.
  • the absorbent main body 3 has a longitudinal direction (X direction) end portion 3 a side (a portion overlapping the ventral sheet member 2 ⁇ / b> A) and the ventral main body portion 20 a of the ventral sheet member 2 ⁇ / b> A.
  • the extending portion 21a is fixed to the central portion in the horizontal direction (Y direction) with an adhesive, and the other end portion 3b side in the vertical direction (X direction) (the portion overlapping the back sheet member 2B) is It fixes to the center part of the horizontal direction (Y direction) of the back side main-body part 20b and the extension part 21b in the side sheet
  • the diaper 1 will be described in detail. In the diaper 1, as shown in FIG.
  • the one end 3a side of the absorbent main body 3 has a ventral side fixing portion 8A fixed to the ventral sheet member 2A via an adhesive.
  • the abdominal-side fixing portion 8A includes an abdominal-side main body fixing portion 80a in which the absorptive main body 3 and the abdominal-side main body portion 20a of the abdominal-side sheet member 2A are fixed via an adhesive;
  • the extending portion 21a of the sheet member 2A is divided into a ventral-side extending and fixing portion 81a fixed via an adhesive.
  • the back-side fixing portion 8B includes a back-side main body fixing portion 80b in which the absorbent main body 3 and the back-side main body portion 20b of the back-side sheet member 2B are fixed via an adhesive, and the absorbent main body 3 and the back-side sheet member.
  • the 2B extension portion 21b is divided into a back side extension fixing portion 81b fixed via an adhesive.
  • fixed part 8B are formed by fixation of an adhesive agent, you may form by well-known fixing methods, such as a heat seal, a high frequency seal, and an ultrasonic seal.
  • the width (L8a) of the abdominal side fixing part 8A between the absorbent main body 3 and the abdominal sheet member 2A is formed narrower than the width (L8b) of the back side fixing part 8B between the absorbent main body 3 and the back side sheet member 2B. It is preferable.
  • the width (L8a) of the abdominal side fixing portion 8A is the lateral direction (Y direction) of the diaper 1 in the abdominal side main body fixing portion 80a and the abdominal side extending fixing portion 81a constituting the abdominal side fixing portion 8A.
  • the width (L8a) of the abdominal side fixing part 8A Means the width (L8a) of the abdominal side fixing part 8A, the width (L8b) of the back side fixing part 8B is also within the back side main body fixing part 80b and the back side extension fixing part 81b constituting the back side fixing part 8B. And the width
  • the width (L8a) of the ventral side fixing portion 8A is the same as the width (L8b) of the back side fixing portion 8B, at least the ventral side
  • the width (L81a) of the abdomen extension fixing part 81a between the absorptive main body 3 and the extension part 21a of the abdomen sheet member 2A in the fixing part 8A is such that the absorptive main body 3 and the back sheet member 2B in the back side fixing part 8B.
  • the width (L81a) of the abdominal side extension fixing part 81a is formed narrower than the width (L81b) of the back side extension fixing part 81b. More preferably.
  • the width (L81a) of the ventral extension fixing portion 81a means the width at the position where the length in the lateral direction (Y direction) of the diaper 1 is the longest in the ventral extension fixing portion 81a. To do.
  • the width (L81b) of the dorsal extension fixing part 81b is also in the lateral direction (Y direction) of the diaper 1 in the back side extension fixing part 81b. It means the width at the position where the length of is the longest.
  • each of the abdominal body fixing portion 80a and the back body fixing portion 80b is formed between both outer edges along the longitudinal direction (X direction) of the absorbent main body 3.
  • a dorsal extension fixing portion 81b is formed between the free ends of the two side cuffs 34, 34, and the ventral extension fixing portion 81a is also close to the free ends of the both side cuffs 34, 34. It is formed on the inner side.
  • the width (L8a) of the ventral side fixing portion 8A and the width (L8b) of the back side fixing portion 8B are the same, but the ventral side extending and fixing
  • the width (L81a) of the part 81a is formed to be narrower than the width (L81b) of the back-side extension fixing part 81b.
  • a plurality of elastic members 24 extend along the lateral direction (Y direction) in the extending portion 21 a of the ventral sheet member 2 ⁇ / b> A and the extending portion 21 b of the back seat member 2 ⁇ / b> B, respectively.
  • the extending portions 21a and 21b are stretchable in the lateral direction (Y direction).
  • the ventral sheet member 2 ⁇ / b> A and the back sheet member 2 ⁇ / b> B in the diaper 1 are arranged on the outer layer sheet 22 that forms the outer surface of the diaper and on the inner surface side of the outer layer sheet 22.
  • the inner layer sheet 23 and a plurality of thread-like elastic members 24 disposed between the two sheets 22 and 23 are respectively provided in the abdominal side main body portion 20a and the back side main body portion 20b in the lateral direction (Y).
  • the waist stretchable part G1 and the waistline stretchable part G2 having elasticity in the direction) are formed, and the stretched part stretchable in the lateral direction (Y direction) is formed on the abdominal extension part 21a and the back extension part 21b.
  • Part G3 is formed.
  • various sheet materials conventionally used for this type of article can be used without particular limitation, but is preferably a non-woven fabric, particularly from the viewpoint of flexibility and the like. It is preferably a single-layer nonwoven fabric or a laminated nonwoven fabric of two or more layers composed of a through nonwoven fabric, a heat roll nonwoven fabric, a spunlace nonwoven fabric, a spunbond nonwoven fabric, a melt blown nonwoven fabric, or the like. Moreover, the sheet
  • various known elastic materials used for absorbent articles such as disposable diapers and sanitary napkins can be used without particular limitation.
  • the elastic material examples include synthetic rubber such as styrene-butadiene, butadiene, isoprene, and neoprene, natural rubber, EVA, stretchable polyolefin, and polyurethane.
  • synthetic rubber such as styrene-butadiene, butadiene, isoprene, and neoprene, natural rubber, EVA, stretchable polyolefin, and polyurethane.
  • As the form of the elastic member it is preferable to use a thread-like (thread rubber etc.) or string-like (flat rubber etc.) cross-section having a rectangular, square, round, polygonal cross section, or a multifilament type thread-like one. it can.
  • the waist stretchable part G1 is in the longitudinal direction of the absorbent main body 3 in the longitudinal direction (X direction) of the diaper 1 in each of the abdominal sheet member 2A and the back sheet member 2B. It is formed outward in the longitudinal direction (X direction) from the end portions 3a and 3b.
  • the waist elastic part G2 includes a waist elastic part G1 and an abdominal extension part 21a or a back extension part 21b in the longitudinal direction (X direction) of the diaper 1 in each of the abdominal sheet member 2A and the back sheet member 2B. Is formed between.
  • the extension part stretchable part G3 is formed in the ventral side extension part 21a or the back side extension part 21b.
  • the abdominal side main body part 20a which is the main body part of the abdominal side sheet member 2A
  • the back side main body part 20b which is the main body part of the back side sheet member 2B
  • the extended part of the abdominal side sheet member 2A A plurality of elastic members 24 respectively extend along the lateral direction (Y direction) in the ventral side extension part 21a and the back side extension part 21b that is an extension part of the back side seat member 2B.
  • the diapers are arranged in a stretched state with an interval in the vertical direction (X direction). More specifically, as for the abdominal sheet member 2A, as shown in FIG.
  • a plurality of elastic members 24A are arranged on the waist expansion / contraction part G1 in the abdominal body part 20a, and the waistline expansion and contraction in the abdominal body part 20a.
  • a plurality of elastic members 24B are arranged in the part G2, and a plurality of elastic members 24C are arranged in the extension part expansion / contraction part G3 in the ventral extension part 21a.
  • a plurality of elastic members 24D are arranged on the waist stretchable part G1 of the back side main body part 20b, and a plurality of elastic members 24D are arranged on the waistline stretchable part G2 of the back side main body part 20b.
  • a plurality of elastic members 24E are arranged, and a plurality of elastic members 24F are arranged on the extending portion extending and contracting portion G3 in the back side extending portion 21b.
  • the extension portion 21 a of the ventral sheet member 2 ⁇ / b> A and the extension portion 21 b of the back seat member 2 ⁇ / b> B are weakened in which the expansion / contraction function of the elastic member 24 is reduced in the region overlapping the absorbent main body 3.
  • Each of the plurality of thread-like elastic members 24B of the waistline elastic part G2 overlapping the absorbent main body 3 and the plurality of thread-like elastic members 24C of the extending part elastic part G3 overlapping the absorbent main body 3 are divided into a plurality of pieces.
  • the elastic members 24B and 24C which are finely divided, no longer have a contracting force and form a weakly functionalized region.
  • the back side seat member 2B also has an absorbent main body 3 via an adhesive at the center in the lateral direction (Y direction) in a state where the waistline elastic part G2 and the extension part elastic part G3 are expanded and extended. Is fixed.
  • Each of the plurality of thread-like elastic members 24E of the waist elastic part G2 overlapping the absorbent main body 3 and the plurality of thread-like elastic members 24F of the extending part elastic part G3 overlapping the absorbent main body 3 are divided into a plurality of pieces.
  • the elastic members 24E and 24F, which are finely divided, no longer have a contracting force and form weakly functional regions.
  • the waist stretchable part G ⁇ b> 1 is an end part of the ventral sheet member 2 ⁇ / b> A or the back sheet member 2 ⁇ / b> B.
  • the stretchable part G2 and the extension part stretchable part G3 are formed in the lateral direction (Y direction) of the diaper 1, respectively.
  • the absorbent body 3 is formed in a portion located laterally (Y direction) outward from both side edges 3c, 3c along the longitudinal direction (X direction).
  • the waistline stretchable part G2 and the extension part stretchable part G3 express stretchability in the lateral direction (Y direction) outward of both side edges 3c, 3c of the absorbent main body 3, and overlap with the absorbent main body 3.
  • the part which overlaps with the horizontal direction (Y direction) center part of the absorptive main body 3 it is hard to express a stretching property, and is formed in the state divided
  • the elastic member 24F disposed in the portion 21b is disposed at an equal elongation rate.
  • the extension rate of the elastic member 24C of the ventral extension part 21a will be described in detail later.
  • the waist stretchable part G1 the waistline stretchable part G2, and the extended part stretchable part G3 in the diaper 1 of the present embodiment, as shown in FIGS. 4 and 5, there are scattered points between the outer layer sheet 22 and the inner layer sheet 23. It joins in many joining parts 26 formed in the shape. More specifically, the joint portions 26 are intermittently arranged in series in the lateral direction (Y direction) of the diaper 1 in any of the expansion and contraction portions G1 to G3 of the ventral seat member 2A and the back seat member 2B. A plurality of joint rows are formed in the longitudinal direction (X direction) of the diaper 1. Further, the positions in the Y direction of the respective joints in the joint rows are also consistent in all the joint rows.
  • a longitudinal junction row is formed in which the junctions 26 are arranged in series in the longitudinal direction (X direction) of the diaper 1, and the longitudinal junction row is spaced apart in the lateral direction (Y direction) of the diaper 1.
  • a plurality of rows are formed.
  • a plurality of elastic members 24 are arranged so as to pass between the joint parts 26 adjacent in the vertical direction. Yes.
  • each elastic member 24 is fixed between the sheets 22 and 23 at an end fixing portion 27 or an absorbent main body fixing portion 28 described later. Also not fixed.
  • the waist stretchable part G1 of the abdominal sheet member 2A is a pair of end fixings in which the outer layer sheet 22 and the inner layer sheet 23 are bonded to both side edges 2a, 2a of the abdominal sheet member 2A via an adhesive. It has a portion 27 (see FIG. 4).
  • the elastic member 24 ⁇ / b> A disposed in the waist stretchable part G ⁇ b> 1 is fixed between the sheets 22 and 23 in each of the pair of end fixing parts 27, and between the end fixing parts 27, whichever of the sheets 22 and 23 is provided. Also not fixed. The same applies to the waist stretchable part G1 of the back seat member 2B (see FIG. 5).
  • the waistline stretchable part G2 of the abdominal sheet member 2A is fixed to the side edge part of the abdominal sheet member 2A at the end part where the outer layer sheet 22 and the inner layer sheet 23 are joined via an adhesive.
  • the absorbent main body side fixing portion 28 has an outer portion sheet 22 and an inner layer sheet 23 bonded to each other on the center side in the diaper lateral direction from the end portion fixing portion 27. (See FIG. 4).
  • the elastic member 24B disposed in the waist elastic part G2 is fixed between the sheets 22 and 23 in the end fixing part 27 and the absorbent main body side fixing part 28, respectively, while the end fixing part 27 and the absorbent main body are fixed. Between the side fixing portion 28, it is not fixed to any of the sheets 22 and 23.
  • the absorbent main body side fixing portion 28 has an outer end in the diaper lateral direction (Y direction) in the diaper lateral direction (Y direction) from the position of the side edge 3 c of the absorbent main body 3. It is formed so as to be located on the inner side (center side), but instead, it is formed so as to extend inside and outside the side edge 3c of the absorbent main body 3, or it is located on the side of the diaper from the side edge 3c of the absorbent main body 3. It can also be formed outward in the direction (Y direction).
  • the length L5 (length in the diaper vertical direction, see FIG. 3) of the ventral side extension 21a is preferably 5% or more of the length La (see FIG. 3) in the same direction of the ventral sheet member 2A. More preferably, it is 20% or more, preferably 60% or less, more preferably 40% or less, specifically 5% or more and 60% or less, particularly 20% or more and 40% or less.
  • the extension length L6 of the back side extension portion 21b (the length in the diaper longitudinal direction, see FIG. 3) is the same as that of the back side seat member 2B, similarly to the extension length L5 of the ventral side extension portion 21a.
  • the length Lb in the direction see FIG.
  • the extended lengths L5 and L6 of the abdominal and dorsal extending portions 21a and 21b are preferably 10 mm or more, more preferably 20 mm or more, and preferably 100 mm or less. More preferably, it is 70 mm or less, specifically 10 mm or more and 100 mm or less, more preferably 20 mm or more and 70 mm or less.
  • the extended lengths L5 and L6 of the ventral and dorsal extending portions 21a and 21b are preferably 10 mm or more, more preferably 20 mm or more, and preferably 150 mm or less, Preferably, it is 100 mm or less, specifically 10 mm or more and 150 mm or less, more preferably 20 mm or more and 100 mm or less.
  • the side seal part 4 of the diaper 1 in a wearing state can be made into a substantially straight line by providing both the abdominal side extension part 21a and the back side extension part 21b. Thereby, while being excellent in the appearance as a garment at the time of wearing, in particular, the abdomen extending portion 21a is pulled backward, and rubber marks due to excessive tightening due to pulling are less likely to occur.
  • the elastic member 24 contracts, so that the sheets between the adjacent longitudinal joint rows 22 and 23 are deformed so as to bulge outward, and a ridge 29 made of the sheet 22 or the sheet 23 is formed between adjacent longitudinal joint rows, and between the two sheets 22 and 23, the ridge 29 and the ridge 29
  • the hollow part 30 surrounded by the periphery is formed (see FIGS. 6A and 6B).
  • the softness of the abdominal sheet member 2 ⁇ / b> A and the back sheet member 2 ⁇ / b> B is improved to improve the touch and the like, and between the heel 29 formed on the skin contact surface side Air is easy to circulate and has excellent anti-sag properties.
  • the inner layer sheet 23 is formed of a breathable sheet such as a nonwoven fabric, moisture in the diaper 1 is more easily released to the outside.
  • outer layer sheet 22 and the inner layer sheet 23 in the diaper 1 of the above-described embodiment are folded back to the inner layer sheet 23 side at the edge 2c that forms the opening peripheral edge of the waist opening as shown in FIG.
  • the folded back portions 22a, 23a are joined to the unfolded portions of the outer layer sheet 22 and the inner layer sheet 23 in the side seal portion 4, and the absorbent main body. 3 is joined to the surface of the absorbent main body 3 on the surface sheet 31 side by an adhesive.
  • the diaper 1 is formed such that, in a contracted state, the width Lf of the extending portion 21a of the ventral sheet member 2A is narrower than the width Lb of the extending portion 21b of the dorsal sheet member 2B. In this way, by setting the width Lf ⁇ the width Lb, it is easy to determine the front and back of the diaper 1 even before wearing.
  • the “contracted state” is a state in which the elastic member 24 is contracted in the natural state, and has the same meaning as the state before wearing the diaper.
  • the width Lf of the extending portion 21a of the abdominal sheet member 2A is a measured value of a portion having the shortest length in the lateral direction (Y direction) in the extending portion 21a, and usually, as shown in FIG.
  • the width Lb of the extending portion 21b of the back seat member 2B is also a measured value of the portion having the shortest horizontal direction (Y direction) length in the extending portion 21b, and is usually as shown in FIG.
  • the value obtained by subtracting the width Lf from the width Lb (Lb ⁇ Lf) may be larger than 10 mm from the viewpoint of easy discrimination before and after the diaper 1 before wearing.
  • the value obtained by subtracting the width Lf from the width Lb (Lb ⁇ Lf) is preferably greater than 20 mm, and more preferably greater than 30 mm.
  • the width Lf of the extending portion 21a of the ventral sheet member 2A is made narrower than the width Lb of the extending portion 21b of the dorsal sheet member 2B.
  • the contraction force in the horizontal direction (Y direction) of 21a is formed higher than the contraction force in the horizontal direction (Y direction) of the extending portion 21b of the back seat member 2B.
  • the contraction force in the lateral direction (Y direction) per unit length of the extending portion 21a of the ventral sheet member 2A is reduced per unit length of the extending portion 21b of the back side sheet member 2B. It is formed higher than the contraction force in the lateral direction (Y direction).
  • the contraction force in the lateral direction (Y direction) of the extending portion 21a of the ventral sheet member 2A is preferably 12 cN or more, more preferably 17 cN or more, and preferably 40 cN or less, more preferably 35 cN or less, specifically, preferably 12 cN or more and 40 cN or less, and more preferably 17 cN or more and 35 cN or less.
  • the contraction force in the lateral direction (Y direction) per unit length of the extending portion 21a of the ventral sheet member 2A is preferably 4 cN / mm or more, more preferably 7 cN / mm or more, and preferably 15 cN / mm.
  • the contraction force in the lateral direction (Y direction) of the extending portion 21b of the back seat member 2B is preferably 10 cN or more, more preferably 15 cN or more, and preferably 35 cN or less, more preferably 30 cN or less. Specifically, it is preferably 10 cN or more and 35 cN or less, and more preferably 15 cN or more and 30 cN or less.
  • the contraction force in the lateral direction (Y direction) per unit length of the extending portion 21b of the back side seat member 2B is preferably 2 cN / mm or more, more preferably 3 cN / mm or more, and preferably 12 cN / mm. mm or less, more preferably 10 cN / mm or less, specifically 2 cN / mm or more and 12 cN / mm or less, and more preferably 3 cN / mm or more and 10 cN / mm or less.
  • the contractile force is measured by a Tensilon universal testing machine (RTC-1210A) manufactured by ORIENTEC. The specific measurement method is as follows.
  • the length in the vertical direction (X direction) of the extending portion 21 a extending downward from the side seal portion 4 is measured.
  • the length in the vertical direction (X direction) is the length of the side portion along the vertical direction (X direction) of the extending portion 21 a, that is, the portion below the side seal portion 4 continuous to the side seal portion 4. More specifically, in the unfolded state, lines (Z, Z) extending along the inner edges of the side seal portions 4, 4 are drawn on the extending portion 21a (see FIG. 3). Next, the extending portion 21 a extending downward from the side seal portion 4 is cut.
  • the cut sample of the extension part 21a includes, in addition to the extension part stretchable part G3, part of the absorbent main body 3, that is, part of the absorber 33, part of the top sheet 31, part of the back sheet 32, side This is a composite including a part of the cuff 34.
  • the length between ZZ (maximum extension length) in a state of being extended to the maximum is obtained.
  • processing such as point sealing or ultrasonic sealing is performed.
  • a value obtained by dividing the tensile load (cN) by the length in the longitudinal direction (X direction) of the extension portion 21a measured in advance is defined as a contraction force per unit length.
  • the extension 21b of the back sheet member 2B is also measured in the same manner as the extension 21a of the abdominal sheet member 2A. The measurement is performed three times, and the average value is calculated as the value of the contraction force of each extension part 21a, 21b and the value of the contraction force per unit length.
  • the reason for defining the return force at a length equivalent to 71% of the maximum extension length is that the length of the belly of the infant who is the main subject wearing the pants-type disposable diaper 1 of the present embodiment is the size of the diaper. This is because it is about 71%.
  • the length of the abdomen around here is an average value of the abdomen measured in the standing position and the sitting position in consideration of the change in the circumference of the abdomen when the posture of the infant changes.
  • the number of elastic members 24C of the ventral extension portion 21a and the elastic members 24F of the back extension portion 21b is preferably 4 or more, particularly preferably 5 or more, and preferably 10 or less.
  • the number is particularly preferably 7 or less, specifically, preferably 4 or more and 10 or less, particularly preferably 5 or more and 7 or less.
  • the elastic member 24C of the ventral extension part 21a is arranged at a higher elongation rate than the elastic member 24F of the back extension part 21b. Specifically, the difference between the extension rate of the elastic member 24C of the ventral extension portion 21a and the extension rate of the elastic member 24F of the back extension portion 21b is 25% or more with respect to the extension rate of the elastic member 24F. It is preferably 80% or less, and more preferably 40% or more and 60% or less.
  • the elongation rate of the elastic member arranged in each stretchable part can be measured by the following method.
  • ⁇ Measurement method of elongation rate> (1) About the diaper 1 of an unstretched state, a mark of length 20mm is attached to each expansion-contraction part along the width direction. (2) At both ends of this mark, the sheet member and the elastic member are gripped, and each expansion / contraction part is extended in the width direction until a state in which the sheet member of each expansion / contraction part is eliminated (extended state). (3) The length (distance between both ends) Lp of the mark after extension is measured. (4) Let (Lp / 20) ⁇ 100 (%) be the elongation rate of the elastic member disposed in each stretchable part. (5) For the unstretched diaper 1, when it is impossible to mark each stretchable part with a length of 20 mm along the width direction, the measurement is performed with marks as large as possible.
  • the size of the single yarn of the elastic member 24C of the ventral extension portion 21a is preferably 235 dtex or more, more preferably 310 dtex or more, preferably 940 dtex or less, more preferably 780 dtex or less, Specifically, it is preferably 235 dtex or more and 940 dtex or less, and more preferably 310 dtex or more and 780 dtex or less.
  • the size of the single yarn of the elastic member 24F of the back extension part 21b is preferably 150 dtex or more, more preferably 280 dtex or more, preferably 780 dtex or less, more preferably 720 dtex or less. It is preferably 150 dtex or more and 780 dtex or less, and more preferably 280 dtex or more and 720 dtex or less. It is preferable to arrange such thread-like elastic members 24C and 24F so as to have an elongation rate of 150% or more.
  • the elastic member 24F of the back extension part 21b is arranged with a shorter interval in the vertical direction (X direction).
  • the vertical direction (X direction) of the plurality of elastic members 24F of the dorsal extension part 21b is arranged substantially evenly, whereas the vertical direction of the plurality of elastic members 24C of the ventral extension part 21a.
  • the interval in the (X direction) is arranged so as to gradually become shorter from the end on the abdominal body part 20a side in the longitudinal direction (X direction) in the abdominal extension part 21a toward the end on the crotch C side. This is preferable from the viewpoint of the appearance at the time of wearing since the shrinkage on the crotch C side is increased.
  • the interval between the elastic members 24F of the back-side extending portions 21b adjacent in the longitudinal direction (X direction) is preferably 4 mm or more, more preferably 5 mm or more, and preferably 12 mm or less, Preferably, it is 10 mm or less, specifically 4 mm or more and 12 mm or less, more preferably 5 mm or more and 10 mm or less.
  • the interval between the elastic members 24C of the ventral side extension portions 21a adjacent to each other in the longitudinal direction (X direction) is preferably 3 mm or more, more preferably 4 mm or more, and preferably 10 mm or less, more preferably 8 mm.
  • the elastic member 24C of the abdominal extension part 21a is preferably 3 mm or more and 10 mm or less, more preferably 4 mm or more and 8 mm or less.
  • the difference between the arrangement interval on the abdominal body part 20a side and the arrangement interval on the crotch C side is preferably Is 1 mm or more, more preferably 5 mm or more, preferably 15 mm or less, more preferably 10 mm or less, specifically 1 mm or more and 15 mm or less, particularly preferably 5 mm or more and 10 mm or less.
  • the arrangement interval on the side of the abdominal body portion 20a is preferably 5 mm or more, more preferably 10 mm or more, preferably 20 mm or less, more preferably 15 mm or less, and specifically 5 mm or more and 20 mm or less.
  • it is preferably 10 mm or more and 15 mm or less
  • the arrangement interval on the crotch part C side is preferably 2 mm or more, more preferably 3 mm or more, and preferably 10 mm or less, more preferably 8 mm or less.
  • it is preferably 2 mm or more and 10 mm or less, particularly 3 mm or more and 8 mm or less.
  • the length of the finely divided elastic member 24C in the weakly functionalized region of the ventral extension portion 21a is made longer than the length of the finely divided elastic member 24F in the weakly functionalized region of the backside extension portion 21b.
  • each of the plurality of thread-like elastic members 24C and 24F is divided into a plurality of pieces, and the finely divided elastic members 24C and 24F no longer have contraction force as described above. It is in a state that does not. However, even though the elastic members 24C and 24F are finely divided, they still have some contraction force.
  • the length of the divided elastic member 24F in the weakly functionalized region of the dorsal extension portion 21b is preferably 1 mm or more, preferably 3 mm or less, more preferably 2 mm or less, Specifically, it is preferably 1 mm or more and 3 mm or less, and more preferably 1 mm or more and 2 mm or less.
  • the length of the divided elastic member 24C in the weakly functionalized region of the ventral extension portion 21a is preferably 2 mm or more, preferably 5 mm or less, more preferably 3 mm or less. Is preferably 2 mm or more and 5 mm or less, and more preferably 2 mm or more and 3 mm or less.
  • Elastic members 24C and 24F having the same thickness are arranged at the same elongation rate on the ventral side extension portion 21a of the ventral side seat member 2A and the back side extension portion 21b of the back side seat member 2B. It is also preferable from the viewpoints of simplifying the manufacturing process and reducing the number of members used. Even if the elastic members 24C and 24F have the same thickness and elongation rate, it is easy to determine the front and back of the diaper from the difference in the contracted state of the extending portions 21a and 21b.
  • the diaper 1 is formed such that, in a contracted state, the width Lf of the extending portion 21a of the abdominal sheet member 2A is narrower than the width Lb of the extending portion 21b of the backside sheet member 2B. Yes.
  • the width Lf ⁇ the width Lb
  • the diaper 1 has a rectangular shape when the abdominal sheet member 2A and the back sheet member 2B are extended. Therefore, it is not necessary to remove unnecessary portions as trims, and the processing equipment can be simplified and high-speed production can be achieved.
  • the diaper 1 is provided with an elastic member 24C in the abdominal extension part 21a, thereby absorbing the wearer's urine and the like during use as shown in FIG. 7 (a). Even when the weight of the diaper increases, the diaper 1 can be prevented from slipping off when worn. Moreover, as shown to Fig.7 (a), since it will hit the wearer's front ridge part in the abdominal side extension part 21a whole and will be supported by a surface, a mark will be attached to the skin of a wearer's ridge part. Difficult and difficult to move legs.
  • the diaper 1 can cover the wearer's buttocks in a worn state as shown in FIG. In addition, it can give a sense of security to parents for infants. Moreover, as shown in FIG. 5, fitting property improves as shown in FIG.7 (c) by providing the elastic member 24F in the back side extension part 21b.
  • the diaper 1 includes a ventral-side extension portion 21a having an elastic member 24C and a back-side extension portion 21b having an elastic member 24F.
  • the side seal portion 4 extends straight in the vertical direction (X direction) to the side of the wearer's body when the diaper 1 is worn, it is preferable in terms of appearance and processing.
  • the side seal part 4 when the side seal part 4 is formed so that it may extend in the vertical direction (X direction) substantially beside the wearer's body, near the lower end of the side seal part 4, In particular, the lower end of the abdominal extension portion 21a is less likely to be scratched, and it is difficult for the wearer's skin to be traced and the leg to be difficult to move.
  • the diaper 1 has the same width (L8a) of the ventral side fixing portion 8A and the width (L8b) of the back side fixing portion 8B, but the width of the ventral side extension fixing portion 81a. (L81a) is formed to be narrower than the width (L81b) of the back extension fixing portion 81b.
  • the contraction force in the lateral direction (Y direction) of the extending portion 21a of the abdominal sheet member 2A is formed higher than the contraction force in the lateral direction (Y direction) of the extending portion 21b of the back side sheet member 2B, Before the mounting, the contraction of the extending portion 21a of the abdominal seat member 2A is synergistically increased with respect to that of the extending portion 21b of the back seat member 2B, making it easier to distinguish between front and rear.
  • the absorptive main body 3 has an adhesive agent in the center part of the horizontal direction (Y direction) of the abdominal side main-body part 20a and the extension part 21a in 2 A of abdominal side sheet members.
  • the abdominal body of the abdominal sheet member 2A is fixed and fixed to the central part in the lateral direction (Y direction) of the back body part 20b and the extension part 21b in the back sheet member 2B.
  • the elastic member 24C may not be finely divided and the weakly functionalized region may not be formed.
  • the weakly functionalized region may not be formed in the extended portion 21b of the back-side seat member 2B that is not fixed.
  • the elastic member 24A, the elastic member 24B, the elastic member 24D, and the elastic member 24E are all arranged at the same elongation rate as that of the elastic member 24F.
  • the abdominal sheet member 2A and the back sheet member 2B are replaced with one having a dot-shaped joint portion 26 formed so as not to overlap the elastic member 24, and the outer layer sheet 22 forming the outer surface of the diaper and its It may have a structure in which the inner layer sheet 23 arranged on the inner side is bonded in the entire region.
  • the waist stretchable part G1, the waistline stretchable part G2, and the extended part stretchable part G3 each have an outer layer sheet 22 that forms the outer surface of the diaper and an inner layer sheet 23 disposed on the inside thereof in the entire region. It may have a bonded structure.
  • the front and rear extending portions 21a and 21b absorb the wearer's urine and the like during use, and are important parts that support the weight of the diaper when the weight of the diaper 1 is increased. Since the influence is great, it is preferable to have a dot-shaped joint portion 26 formed so as not to overlap the elastic member 24.
  • the side seal portion 4 is formed by joining the side edges 2a and 2b of the ventral side and the back side seat member, but the ventral side seat member 2A and the back side seat member 2B are formed outside the side seal portion 4. And may have a non-joined portion with a narrow width (for example, more than 0 mm and not more than 20 mm).
  • the pants-type absorbent article may be a pants-type sanitary napkin or the like in addition to a pants-type disposable diaper for infants or adults.
  • the description omitted in one embodiment described above and the requirements of only one embodiment can be applied to other embodiments as appropriate, and the requirements in each embodiment can be appropriately changed between the embodiments. Can be substituted.
  • pant-type absorbent articles are disclosed with respect to the embodiment described above.
  • An absorptive main body, and a pair of side seal portions, a waist opening portion, and a pair of leg openings are formed by joining both side edges of the ventral sheet member and both side edges of the back seat member.
  • a pants-type absorbent article Each of the abdominal seat member and the back seat member has an extending portion that extends downward from the side seal portion, and each of the extending portions has a plurality of elastic members along the lateral direction.
  • each extension Arranged in an elongated state, each extension has a stretch in the lateral direction, A pant-type absorbent article in which the width of the extended portion of the ventral sheet member is narrower than the width of the extended portion of the back sheet member in a contracted state.
  • the said absorptive main body has a liquid-permeable surface sheet, a liquid-impermeable or water-repellent back sheet, and a liquid-retaining absorber disposed between both sheets.
  • Pants-type absorbent article ⁇ 3> The pants-type absorbent article according to ⁇ 1> or ⁇ 2>, wherein the absorbent main body has a rectangular shape that is long in a longitudinal direction of the pants-type absorbent article.
  • the absorbent is composed of an absorbent core made of an aggregate of fibers such as pulp fibers or an absorbent core in which particles of a water absorbent polymer are held, and a core wrap sheet covering the absorbent core. 2> The underpants type absorbent article as described.
  • the absorbent body has a low-rigidity portion in which the forming material of the absorbent core does not exist or the basis weight of the forming material is less than other portions on both sides along the longitudinal direction of the pant-type absorbent article.
  • the said low-rigidity part is a pants type absorbent article as described in said ⁇ 6> currently formed long in the vertical direction of the said pants type absorbent article.
  • ⁇ 8> Any one of the items ⁇ 1> to ⁇ 7>, wherein side cuffs made of a liquid-resistant or water-repellent and breathable material are formed on both side portions along the longitudinal direction of the absorbent main body.
  • the underpants type absorbent article as described.
  • ⁇ 9> The pants-type absorbent article according to ⁇ 8>, wherein a side cuff elastic member is disposed in an extended state in the vicinity of a free end of the side cuff.
  • the abdomen sheet member is joined to each side edge of the abdomen sheet between the abdomen sheet member and the back sheet member to form the side seal part, and Extending below the joined portion, and having a non-joined portion where the ventral sheet member and the dorsal sheet member are not joined,
  • the dorsal seat member is joined to each side edge of the dorsal seat member between the dorsal seat member and the ventral seat member to form the side seal portion; , Extending below the joined portion, and having a non-joined portion where the back seat member and the vent seat member are not joined,
  • the abdominal sheet member has an abdominal body part positioned between the joint parts of the abdominal sheet member, and the rectangular extension part extending to the crotch part side of the abdominal body part.
  • the back side seat member has a back side main body located between the joint portions of the back side seat member, and the rectangular extension extending to the crotch part side of the back side main body.
  • the ventral sheet member and the dorsal sheet member are arranged in an extended state between the outer layer sheet forming the outer surface of the pant-type absorbent article, the inner layer sheet disposed on the inner surface side of the outer layer sheet, and both sheets.
  • the underpants-type absorbent article according to any one of ⁇ 1> to ⁇ 15>, further comprising a plurality of thread-like elastic members.
  • An abdominal body part that is a body part of the abdominal sheet member, a back body part that is a body part of the back sheet member, an extending part of the abdominal sheet member, and an extending part of the dorsal sheet member
  • Each of the plurality of elastic members is arranged in an extended state so as to extend along the lateral direction of the pant-type absorbent article and at intervals in the vertical direction of the pant-type absorbent article.
  • the underpants-type absorbent article according to any one of ⁇ 1> to ⁇ 16>.
  • the waist stretchable part has the pant-type absorption from the longitudinal end of the absorbent main body in the longitudinal direction (X direction) of the pant-type absorbent article in each of the ventral sheet member and the back-side sheet member.
  • the pants-type absorbent article according to any one of the above items ⁇ 1> to ⁇ 17>, which is formed outward in the longitudinal direction (X direction) of the absorbent article.
  • the waist stretchable part is the waist stretchable part in the longitudinal direction (X direction) of the pant-type absorbent article and the extended part of the ventral sheet member in each of the ventral sheet member and the dorsal sheet member.
  • the underpants type absorbent article as described in said ⁇ 18> currently formed between the extension part of this back side sheet member.
  • a plurality of the elastic members are disposed on the waist stretchable part, a plurality of the elastic members are disposed on the waistline stretchable part, and a plurality of the elastic members are disposed on the extension stretchable part.
  • Each of the extending portion of the ventral seat member and the extending portion of the back seat member has a weakly functioning region in which the elastic member has a reduced expansion / contraction function in a region overlapping the absorbent main body.
  • Each of the extending portion of the ventral seat member and the extending portion of the back seat member overlaps the absorbent main body, and each of the plurality of elastic members is divided into a plurality of pieces, The underpants-type absorbent article according to ⁇ 22>, wherein the weakly functionalized region is formed.
  • a plurality of the elastic members are arranged in an extended state in the lateral direction on the abdominal side main body portion of the abdominal side sheet member, and a waistline elastic portion is formed,
  • the abdominal sheet member has the absorbent main body fixed to the laterally central portion of the pant-type absorbent article via an adhesive.
  • the underpants-type absorbent article according to ⁇ 23>, wherein the waist stretchable portion that overlaps the absorbent main body has a weakly functionalized region in a state having almost no contractile force.
  • a plurality of front elastic members are arranged in a laterally extended state to form a waistline stretchable portion
  • the back side sheet member In the expanded and elongated state, the back side sheet member has the absorbent main body fixed to the lateral center portion of the pant-type absorbent article via an adhesive.
  • each of the plurality of elastic members of the waistline stretchable portion overlapping the absorbent main body is divided into a plurality of pieces to form a weakly functionalized region.
  • the extension length of the extension part of the ventral sheet member (the length in the longitudinal direction of the pants-type absorbent article) is 5 to 60% of the length in the same direction of the ventral sheet member, 20-40%, and the extension length of the extension portion of the back sheet member (the length in the longitudinal direction of the pants-type absorbent article) is 5% of the length of the back sheet member in the same direction.
  • the extension length of the extension part of the back side sheet member is the same as the extension length of the extension part of the abdominal sheet member,
  • the ratio (L5 / L6) of the extension length L5 of the extension portion of the ventral sheet member to the extension length L6 of the extension portion of the back side seat member is 1.0 or less, or 0
  • ⁇ 31> Any one of ⁇ 1> to ⁇ 30>, wherein a lateral contraction force of the extending portion of the ventral sheet member is higher than a lateral contraction force of the extending portion of the back seat member.
  • Pants-type absorbent article. ⁇ 32> The pant-type absorbent article according to ⁇ 31>, wherein the contraction force in the lateral direction (Y direction) of the extending portion of the ventral sheet member is 12 to 40 cN or 17 to 35 cN.
  • ⁇ 33> The pants-type absorbent article according to ⁇ 31> or ⁇ 32>, wherein the contraction force in the lateral direction (Y direction) of the extending portion of the back side sheet member is 10 to 35 cN or 15 to 30 cN.
  • ⁇ 34> ⁇ 31 in which the lateral contraction force per unit length of the extending portion of the ventral seat member is higher than the lateral contraction force per unit length of the extending portion of the back seat member.
  • the underpants-type absorbent article according to any one of> to ⁇ 33>.
  • ⁇ 35> The underpants-type absorption according to ⁇ 34>, wherein the contraction force in the lateral direction (Y direction) per unit length of the extending portion of the ventral sheet member is 4 to 15 cN / mm or 7 to 13 cN / mm Sex goods.
  • ⁇ 36> ⁇ 34> or ⁇ 35> in which the contraction force in the lateral direction (Y direction) per unit length of the extending portion of the back seat member is 2 to 12 cN / mm, or 3 to 10 cN / mm
  • the underpants type absorbent article as described.
  • the underpants type absorbent article of any one of these.
  • ⁇ 38> ⁇ 1> to ⁇ 37> wherein a width of the abdomen fixing portion between the absorbent main body and the abdominal seat member is narrower than a width of the back fixing portion between the absorptive main body and the back seat member.
  • the underpants type absorbent article according to any one of the above. ⁇ 39> The width of the abdominal extension fixing part between the absorptive main body in the abdomen fixing part and the extension part of the abdominal sheet member is the width of the absorptive main body and the back seat member in the dorsal fixing part.
  • the underpants-type absorbent article according to any one of the above items ⁇ 1> to ⁇ 38> which is narrower than a width of the back side extension fixing portion with respect to the extension portion.
  • pant-type absorbent article according to any one of ⁇ 1> to ⁇ 39>, wherein the pant-type absorbent article is a pants-type disposable diaper for infants or adults or a pants-type sanitary napkin.
  • the pants-type absorbent article is a diaper for infants, in a contracted state, a value obtained by subtracting the width Lf of the extending portion of the ventral sheet member from the width Lb of the extending portion of the dorsal sheet member.
  • (Lb ⁇ Lf) is greater than 10 mm or greater than 20 mm.
  • ⁇ 42> When the pants-type absorbent article is an adult diaper, in a contracted state, a value obtained by subtracting the width Lf of the extended portion of the ventral sheet member from the width Lb of the extended portion of the backside sheet member.
  • ⁇ 43> The pants according to any one of ⁇ 1> to ⁇ 42>, wherein the pants according to any one of ⁇ 1> to ⁇ 42> have a narrow non-joined portion where the abdomen seat member and the back seat member are not joined to the outside of the side seal portion. Mold absorbent article.
  • a pant-type absorbent article that can be easily discriminated before and after wearing, and is less likely to leave marks on the wearer's throat when worn.

Landscapes

  • 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/JP2012/079143 2011-12-20 2012-11-09 パンツ型吸収性物品 WO2013094334A1 (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201290000999.4U CN204192873U (zh) 2011-12-20 2012-11-09 短裤型吸收性物品
RU2014128326/12U RU150850U1 (ru) 2011-12-20 2012-11-09 Впитывающее изделие типа трусов

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2011277943A JP2013128516A (ja) 2011-12-20 2011-12-20 パンツ型吸収性物品
JP2011-277943 2011-12-20

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Publication Number Publication Date
WO2013094334A1 true WO2013094334A1 (ja) 2013-06-27

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CN (1) CN204192873U (ru)
RU (1) RU150850U1 (ru)
TW (1) TW201328681A (ru)
WO (1) WO2013094334A1 (ru)

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JP6255225B2 (ja) * 2013-11-29 2017-12-27 ユニ・チャーム株式会社 吸収性物品
JP6427520B2 (ja) * 2016-03-29 2018-11-21 ユニ・チャーム株式会社 吸収性物品
JP6690388B2 (ja) * 2016-04-28 2020-04-28 王子ホールディングス株式会社 着用物品の製造方法および着用物品
CN111315333B (zh) * 2017-11-10 2022-09-27 尤妮佳股份有限公司 一次性尿布
CN112118817B (zh) * 2018-05-18 2022-06-03 尤妮佳股份有限公司 短裤型吸收性物品

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011224046A (ja) * 2010-04-15 2011-11-10 Kao Corp パンツ型吸収性物品及びその製造方法
JP2012016522A (ja) * 2010-07-09 2012-01-26 Kao Corp パンツ型吸収性物品

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Publication number Priority date Publication date Assignee Title
US7009515B2 (en) * 2001-04-11 2006-03-07 Battelle Memorial Institute K1-53 Frequency-hopping RFID system
JP4535771B2 (ja) * 2004-05-14 2010-09-01 花王株式会社 複合伸縮部材及びその製造方法
JP4002263B2 (ja) * 2004-10-07 2007-10-31 花王株式会社 使い捨ておむつ

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011224046A (ja) * 2010-04-15 2011-11-10 Kao Corp パンツ型吸収性物品及びその製造方法
JP2012016522A (ja) * 2010-07-09 2012-01-26 Kao Corp パンツ型吸収性物品

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RU150850U1 (ru) 2015-02-27
JP2013128516A (ja) 2013-07-04
TW201328681A (zh) 2013-07-16

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