WO2021033408A1 - Article absorbant de type sous-vêtement - Google Patents

Article absorbant de type sous-vêtement Download PDF

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Publication number
WO2021033408A1
WO2021033408A1 PCT/JP2020/024189 JP2020024189W WO2021033408A1 WO 2021033408 A1 WO2021033408 A1 WO 2021033408A1 JP 2020024189 W JP2020024189 W JP 2020024189W WO 2021033408 A1 WO2021033408 A1 WO 2021033408A1
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WO
WIPO (PCT)
Prior art keywords
right direction
pants
absorbent article
type absorbent
ventral
Prior art date
Application number
PCT/JP2020/024189
Other languages
English (en)
Japanese (ja)
Inventor
健人 梨子木
貴仁 永井
麻衣子 下津
旭光 姚
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
Priority to CN202080054257.9A priority Critical patent/CN114173732B/zh
Publication of WO2021033408A1 publication Critical patent/WO2021033408A1/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
    • 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
    • A61F13/53—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium
    • A61F13/531—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having a homogeneous composition through the thickness of the pad
    • A61F13/532—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having a homogeneous composition through the thickness of the pad inhomogeneous in the plane of the pad

Definitions

  • the present invention relates to a pants-type absorbent article.
  • Patent Document 1 discloses a disposable absorbent article 10 that makes it easy to confirm the position of the leg circumference opening 25 when worn by providing the leg rotation mark portion 28 as a mark when inserting the leg. There is.
  • the leg circumference marker portion 28 is visually recognized. It was difficult to accurately recognize the position of the leg circumference opening 25, and there was a risk that the leg would be caught around the leg circumference opening 25 before the leg was passed through the leg circumference opening 25.
  • the present invention has been made in view of the above-mentioned conventional problems, and an object of the present invention is to make it easier for a wearer to pass a leg through a leg opening when wearing an absorbent article. Is to provide.
  • the main invention for achieving the above object in a natural state, has a vertical direction, a horizontal direction, and a front-rear direction that intersect with each other, and includes a ventral waist circumference portion, a dorsal waist circumference portion, and a crotch portion.
  • the side ends of the waistline are joined at a joint, and on one side in the left-right direction, the inner end of the lower end of the joint in the left-right direction and the outer end of the fold line in the left-right direction.
  • the wearer can provide a pants-type absorbent article that makes it easy to insert a leg toward the leg circumference opening.
  • FIG. 5 is a schematic plan view of the unfolded and stretched diaper 1 according to the first embodiment as viewed from the skin side.
  • FIG. 2 is a schematic cross-sectional view taken along the line AA in FIG. It is the schematic which shows the state when the leg circumference opening LH is seen from the waist circumference opening BH. It is an enlarged view of the P part in FIG. It is an enlarged view which saw the Q part in FIG. 2 from the non-skin side.
  • a pants-type absorbent article that is folded in half and has a waist circumference opening and a pair of leg circumference openings, and a side end portion of the ventral waist circumference portion and a side end portion of the dorsal waist circumference portion are joints.
  • It is joined, and on one side in the left-right direction, a straight line connecting the inner end in the left-right direction of the lower end of the joint and the outer end in the left-right direction of the folding line, and the up-down direction. It is a pants-type absorbent article characterized in that the smaller angle of the angles formed by the straight lines along the line is 45 degrees or more and less than 90 degrees.
  • the wearer when the wearer wears the absorbent article, the wearer attaches the inner end of the lower end of the joint in the left-right direction to the outer end of the fold line in the left-right direction. Since the length in the left-right direction can be seen longer than the length in the up-down direction, it becomes easier to pass the leg through the leg circumference opening.
  • the hip joint portion in a natural state, it has a vertical direction, a left-right direction, and a front-rear direction that intersect with each other, and includes a ventral waist circumference portion, a dorsal waist circumference portion, and a crotch lower portion.
  • It is a pants-type absorbent article that is folded in half and has a waist circumference opening and a pair of leg circumference openings, and the side end portion of the ventral waist circumference portion and the side end portion of the dorsal waist circumference portion are joined. It is joined at a portion and includes an absorber, and the absorber is folded in half in the front-rear direction at the absorber fold line at the lower end, and on one side in the left-right direction, of the lower ends of the joint portion.
  • the smaller angle of the straight line connecting the inner end in the left-right direction and the outer end in the left-right direction of the absorber fold line and the straight line along the vertical direction is 45 degrees or more. It is a pants-type absorbent article characterized by being less than 90 degrees.
  • the wearer wears the absorbent article from the inner end in the left-right direction of the lower end of the joint to the outer end in the left-right direction of the absorber fold line. Since the length in the left-right direction can be made longer than the length in the up-down direction in the area up to, it becomes easy to insert the leg toward the leg circumference opening.
  • Such a pants-type absorbent article has a leg circumference gather portion that can be expanded and contracted in the vertical direction on one side in the left-right direction, and the leg circumference gather portion is the front-rear direction at the gather fold line at the lower end.
  • the leg circumference gather portion is the front-rear direction at the gather fold line at the lower end.
  • the angle formed by the straight line connecting the inner end of the lower end of the joint in the left-right direction and the uppermost end of the gather fold line and the straight line along the vertical direction It is desirable that the smaller angle is 45 degrees or more and less than 90 degrees.
  • the pants-type absorbent article has an absorbent body and is provided with a vertical expansion / contraction region that expands and contracts along the vertical direction on the non-skin side of the absorbent body in the inseam.
  • the vertical expansion / contraction region makes it easier to pull up the inseam upward, and the opening angle can be made closer to 90 degrees, so that the leg can be easily passed through the leg circumference opening.
  • the absorber in at least one of the ventral waist circumference portion and the dorsal waist circumference portion, has a predetermined basis weight region provided with a predetermined basis weight of liquid-absorbing fiber and the said. It is desirable to have a low basis weight region in which the liquid absorbing fibers are less than the predetermined basis weight region, and to have a portion in which the vertically stretchable region and the low basis weight region overlap in the front-rear direction.
  • the vertical expansion / contraction region that overlaps the low basis weight region in the front-rear direction contracts in the vertical direction from the predetermined basis weight region, and the crotch portion can be easily pulled up. Since the opening angle can be made closer to 90 degrees, it becomes easier to pass the leg through the leg circumference opening.
  • the vertically stretchable region is provided on the ventral side and the dorsal side across the fold line, and the length of the vertically stretchable region on the ventral side in the vertical direction is It is desirable that the length of the vertical expansion / contraction region on the dorsal side is longer than the length in the vertical direction.
  • the crotch part on the ventral side is more likely to shrink than the back side due to the vertical expansion and contraction area. This makes it easier for the leg opening to bend toward the front side, making it easier to shape the leg opening according to the movement of the wearer's legs, and making it easier for the wearer to pass the leg through the leg opening. Become.
  • the vertical length of the dorsal waist circumference portion is longer than the vertical length of the ventral waist circumference portion, and the vertical expansion / contraction region straddles the folding line. It is provided on the ventral side and the dorsal side, and it is desirable that the vertical length of the vertical expansion / contraction region on the dorsal side is longer than the vertical length of the vertical expansion / contraction region on the ventral side.
  • the dorsal crotch is ventral due to the vertical expansion and contraction region.
  • the dorsal waistline tends to bend toward the non-skin side, and the wearer's heel may come into contact with the ventral waistline when wearing an absorbent article. Can be reduced.
  • the absorber is provided on the absorbent body, and at least one of the ventral waist circumference portion and the dorsal waist circumference portion is below the lower end of the joint portion and said. It is desirable that a left-right stretchable region that can be expanded and contracted in the left-right direction is provided above the fold line, and that the absorbent body and the left-right stretchable region have a portion that overlaps in the front-back direction.
  • the left and right elastic regions provided in the ventral ventral waist circumference or the dorsal waist circumference pull the absorbent body in the left-right direction, so that the inseam is directed downward.
  • the fear can be reduced.
  • the pants-type absorbent article has a portion in at least one of the ventral waist circumference portion or the dorsal waist circumference portion in which the vertically stretchable region and the left and right stretchable region overlap in the front-rear direction.
  • the vertical stretchable region that overlaps the horizontal stretchable region in the front-rear direction makes it easier to pull up the absorber upward, and the opening angle can be made closer to 90 degrees. It becomes easier to pass the leg through the opening.
  • Such a pants-type absorbent article having an absorber and the length of the absorber in the left-right direction at the fold line is shorter than the longest portion of the absorber having the longest length in the left-right direction. Is desirable.
  • the length of the leg circumference opening in the left-right direction can be made longer, so that the wearer can easily pass the leg through the leg circumference opening.
  • the narrowest portion of the pants-type absorbent article having the shortest length in the left-right direction of the absorber is provided on the ventral side of the fold line.
  • the wearer tries to put the leg toward the front side when wearing the article, so that the narrowest portion of the absorber is provided on the front side.
  • the length of the ventral leg circumference opening in the left-right direction can be made longer, and the wearer can easily pass the leg through the leg circumference opening.
  • the joint portion in the extended state, on one side in the left-right direction, is from the side end portion of the ventral waist circumference portion and the upper end portion of the side end portion of the dorsal waist circumference portion. It is desirable that the lower end portion is provided in a straight line, and the lower end portion of the joint portion is located on the other side in the left-right direction from the upper end portion of the joint portion.
  • the length of the leg circumference opening in the left-right direction can be made longer and worn. It is easier for the person to pass the leg through the leg opening.
  • Such a pants-type absorbent article in a natural state, on one side in the left-right direction, at the inner end of the upper end of the joint in the left-right direction and in the left-right direction of the lower end of the joint.
  • the line segment connecting the inner end is a joint line segment
  • the upper end of the joint line segment is located on the other side in the left-right direction from the lower end of the joint line segment, and is among the lower ends of the joint portion. It is desirable that the angle formed by the line segment connecting the inner end in the left-right direction and the outer end of the folding line in the left-right direction and the joint line segment is larger than 90 degrees.
  • the present invention is not limited to the above, and the pants-type absorbent article according to the present invention can also be applied to pants-type disposable diapers for infants, shorts-type sanitary napkins, and the like.
  • FIG. 1 is a schematic front view of the pants-type disposable diaper 1 in the natural state according to the first embodiment as viewed from the ventral side.
  • FIG. 2 is a schematic plan view of the unfolded and stretched diaper 1 according to the first embodiment as viewed from the skin side.
  • FIG. 3 is a schematic cross-sectional view taken along the line AA in FIG.
  • the diaper 1 has a "vertical direction”, a “horizontal direction” orthogonal to the vertical direction, and a “front-back direction” orthogonal to the vertical direction and the horizontal direction in the natural state as shown in FIG.
  • the upper side corresponds to the waist opening side of the wearer
  • the lower side corresponds to the inseam side of the wearer.
  • the front side corresponds to the ventral side of the wearer
  • the rear side corresponds to the back side of the wearer.
  • the “natural state” is the state when the diaper 1 is left for a predetermined time.
  • the diaper 1 in the product state is pulled out from the package on the back side waist circumference portion 11 in the left-right direction, the waist circumference portion 11 is set to the "extended state", and this extended state is continued for 15 seconds, and then the diaper 1 Release the pull and place it on a flat surface such as a desk. Then, the state in which 5 minutes have passed in such a flat flat placement is regarded as a natural state.
  • the pants-type diaper 1 has a vertical direction, a horizontal direction, and a front-rear direction orthogonal to the vertical direction and the horizontal direction.
  • the diaper 1 is formed with a waist circumference opening BH and a pair of leg circumference openings LH.
  • the waist opening BH side is on the upper side
  • the leg opening LH and the wearer's inseam side are on the lower side.
  • the more accurate left-right direction is considered to be a straight line along the left-right direction for the diaper 1 placed flat on a flat surface, using a plurality of reference points (for example, each point divided into 10 equal parts) at the upper end of the dorsal waist circumference portion 11R.
  • the straight line (regression straight line) to be obtained can be obtained by the method of least squares.
  • the direction along the straight line (return straight line) considered to be the straight line along the left-right direction is the left-right direction, and the direction orthogonal to the obtained left-right direction is the up-down direction.
  • the diaper 1 In the unfolded and extended state shown in FIG. 2, the diaper 1 has a longitudinal direction, a left-right direction, and a thickness direction (in FIG. 2, a direction penetrating the paper surface) as three directions orthogonal to each other.
  • the longitudinal direction is along the above-mentioned vertical direction, and one side of the longitudinal direction corresponds to the ventral side (front side) and the other side corresponds to the dorsal side (rear side).
  • the outer side in the longitudinal direction corresponds to the upper side in the vertical direction (girth opening side), and the inner side in the longitudinal direction corresponds to the lower side in the vertical direction (inseam side).
  • the longitudinal direction of the diaper 1 in the expanded and extended state is also referred to as the vertical direction.
  • the left-right direction is synonymous with the left-right direction in the above-mentioned pants type state.
  • one side is the skin side in contact with the wearer's body, and the other side is the non-skin side on the opposite side (see FIG. 3).
  • the thickness direction in the unfolded and extended state corresponds to the anteroposterior direction in the natural state.
  • the “deployed state” means that the diaper 1 in the pants-shaped state shown in FIG. 1 is disjointed on both sides in the left-right direction and separated into a ventral waist circumference portion 11F and a dorsal waist circumference portion 11R, which will be described later, and the diaper 1 is vertically oriented. It is a state in which the diaper 1 is opened on a flat surface. Further, the “extended state” is a state in which the diaper 1 is extended without wrinkles, specifically, the dimensions of each member (for example, the exterior body 10 and the absorbent body 20 described later) constituting the diaper 1 are the dimensions thereof. It refers to a state in which the member is stretched to a length that matches or is close to the dimensions of the single member.
  • the diaper 1 is a so-called two-piece type, and has an exterior body 10 and an absorbent main body 20 that absorbs excrement such as urine.
  • the two-piece type pants-type diaper 1 will be described, but it may be a so-called three-piece type disposable diaper in which the ventral waist circumference portion and the dorsal waist circumference portion are arranged as separate bodies.
  • the exterior body 10 has a waist circumference portion 11 located around the wearer's waist and an inseam portion 12 located at the wearer's inseam. Further, the waist circumference portion 11 has a ventral waist circumference portion 11F that covers the ventral side of the wearer and a dorsal waist circumference portion 11R that covers the back side of the wearer. As shown in FIG. 2, the upper end and the side end of the ventral waist circumference portion 11F are the upper end and the side end of the sheet (the front side exterior back sheet 120F described later) forming the outer shape of the exterior body 10 on the ventral side. This is the position of the line UL1 connecting the intersections of the ventral exterior body 10 and the absorbent body 20.
  • the area surrounded by the upper end, the side end, the curved or straight portion connecting the lower end of the side end to the line UL1, and the above-mentioned lower end is the ventral waist circumference portion 11F.
  • the upper end and the side end of the dorsal waist circumference portion 11R are the upper end and the side end of the sheet (rear side exterior back sheet 120R described later) forming the outer shape of the exterior body 10 on the back side, and the lower end is the back side exterior body 10 This is the position of the line UL2 connecting the intersections of the absorbent body 20 with the absorbent body 20.
  • the dorsal waist circumference portion 11R is a region surrounded by the upper end, the side end, the curved or straight portion connecting the lower end of the side end to the line UL2, and the above-mentioned lower end.
  • the inseam 12 is a region interposed between the ventral waist circumference 11F and the dorsal waist circumference 11R.
  • ventral waist circumference 11F is located on one end side of the absorbent body 20 in the longitudinal direction
  • dorsal waist circumference 11R is located on the other end side of the absorbent body 20 in the longitudinal direction.
  • the ventral girth portion 11F and the dorsal girth portion 11R have a pair of side end portions 13F and a pair of side end portions 13R, respectively, and have a joint portion 13FR that joins the side end portion 13F and the side end portion 13R. ing.
  • the diaper 1 in the unfolded state is folded in half at the substantially central portion in the longitudinal direction, that is, the folding line CL provided at the lower crotch 12, and is joined at the joint portion 13FR to form the pants-type disposable diaper 1 shown in FIG. Become.
  • the ventral joint 13FR and the dorsal joint 13FR face each other and are joined to form a pants type.
  • the bonding portion 13FR is bonded by providing an elliptical ultrasonic bond in a straight line, but a well-known bonding means such as an adhesive or welding can be used, and the bonding shape is also Not limited to an elliptical shape, it can be any shape such as a rectangular shape.
  • the fold line CL is a straight line along the left-right direction, but in the natural state in FIG. 1, it means the lowermost end of the diaper 1 having a folded portion, which is described below.
  • the fold line of each member refers to the lowermost end of each member having a folded portion.
  • the exterior body 10 includes an exterior top sheet 110, a front exterior back sheet 120F, a rear exterior back sheet 120R, a ventral waist circumference elastic member 130F, and a dorsal waist circumference elastic member 130R. And a left-right elastic region 140.
  • the exterior top sheet 110 is arranged from the ventral waist circumference 11F to the dorsal waist circumference 11R via the inseam 12 (FIG. 3).
  • the width (horizontal length) of the exterior top sheet 110 in the ventral waist circumference portion 11F and the dorsal waist circumference portion 11R is larger than the width (horizontal length) of the exterior top sheet 110 in the inseam 12 (FIG. 2). ).
  • the exterior top sheet 110 can be formed of an air-through non-woven fabric, a spunbonded non-woven fabric, an SMS non-woven fabric (spunbond, meltblown, spunbonded non-woven fabric), a waterproof film, or the like.
  • the front exterior back sheet 120F is provided on the ventral waist circumference 11F on the non-skin side of the exterior top sheet 110.
  • the outer end (upper end) of the front exterior backsheet 120F in the longitudinal direction is folded back toward the skin.
  • the folded portion of the front exterior back sheet 120F wraps one end (outer end) of the exterior top sheet 110 in the longitudinal direction.
  • the outer end (upper end) of the front exterior back sheet 120F in the longitudinal direction may not be folded back.
  • the rear exterior back sheet 120R is provided on the dorsal waist circumference portion 11R on the non-skin side of the exterior top sheet 110.
  • the outer end (upper end) of the rear exterior backsheet 120R in the longitudinal direction is folded back toward the skin.
  • the folded portion of the rear exterior back sheet 120R wraps the other end (outer end) of the exterior top sheet 110 in the longitudinal direction.
  • the outer end (upper end) of the front exterior back sheet 120F in the longitudinal direction may not be folded back.
  • the front exterior back sheet 120F and the rear exterior back sheet 120R can be formed of an air-through non-woven fabric, a spunbond non-woven fabric, an SMS non-woven fabric (spunbond, meltblown, spunbond non-woven fabric) or the like.
  • the ventral waist circumference elastic member 130F is provided between the exterior top sheet 110 and the front exterior back sheet 120F in the ventral waist circumference portion 11F (see FIG. 3).
  • the ventral waist circumference elastic member 130F is, for example, a plurality of rubber threads.
  • the ventral waist circumference elastic member 130F is joined and fixed by an adhesive such as a hot melt adhesive along the same direction while extending in the left-right direction.
  • the ventral waist circumference elastic member 130F imparts elasticity in the left-right direction to the ventral waist circumference portion 11F.
  • the dorsal waist circumference elastic member 130R is provided between the exterior top sheet 110 and the rear exterior back sheet 120R in the dorsal waist circumference portion 11R (see FIG. 3).
  • the dorsal waist circumference elastic member 130R is, for example, a plurality of rubber threads.
  • the dorsal waist circumference elastic member 130R is joined and fixed by an adhesive such as a hot melt adhesive along the same direction while extending in the left-right direction.
  • the dorsal girth elastic member 130R imparts elasticity in the left-right direction to the dorsal girth portion 11R.
  • a left-right expansion / contraction region 140 that can be expanded / contracted in the left-right direction below the lower end of the joint portion 13FR and above the fold line CL.
  • a left-right expansion / contraction region 140 is provided between the exterior top sheet 110 and the rear exterior back sheet 120R.
  • the left-right expansion / contraction region 140 is curved diagonally downward from both side end portions 13R of the back-side waist circumference portion 11R in the left-right direction toward the inside in the longitudinal direction and the inside in the left-right direction of the back-side waist circumference portion 11R.
  • the left-right elastic region 140 is an region in which a contraction force is exerted by, for example, a plurality of elastic threads or elastic members such as a strip-shaped elastic sheet having elasticity.
  • the diaper 1 is a region in which a plurality of elastic threads are in the vertical direction.
  • the left-right elastic region 140 is defined as the space between the outermost rubber threads.
  • the left and right stretchable regions 140 are joined and fixed by an adhesive such as a hot melt adhesive in a stretched state.
  • the left-right stretchable region 140 has a portion that overlaps with the absorbent main body 20 in the thickness direction. This is because the left-right expansion / contraction region 140 provided in the dorsal waist circumference portion 11R can pull the portion overlapping the absorbent body 20 in the thickness direction in the left-right direction. It is possible to reduce the possibility that the inseam 12 is lowered downward, and to shorten the length of the inseam 12 in the vertical direction.
  • the absorbent body 20 is provided on the skin side of the exterior body 10 (see FIG. 3).
  • the absorbent body 20 includes a liquid absorbent absorber (absorbent core) 21, a core wrap sheet 22 that covers the outer peripheral surface of the absorbent body 21, a top sheet 23, a film sheet 24, and a back sheet 25. And have.
  • the absorber 21 is provided on the skin side of the exterior body 10 in the thickness direction at least in the inseam 12.
  • the absorber 21 extends along the longitudinal direction and has a portion confined inward in the left-right direction, and the longest portion 21a having the longest length in the left-right direction is the ventral end and the dorsal side in the longitudinal direction.
  • the narrowest portion 21b having the shortest length in the left-right direction is provided between the longest portion 21a on the ventral side and the fold line CL, and between the longest portion 21a on the dorsal side and the fold line CL, respectively. ing.
  • the lengths of the ventral longest portion 21a and the dorsal longest portion 21a in the left-right direction are substantially the same, and the lengths of the ventral narrowest portion 21b and the dorsal narrowest portion 21b in the left-right direction.
  • The is almost the same.
  • the absorber 21 is folded in half in the front-rear direction along the absorber fold line 21L as the diaper 1 is folded in half at the fold line CL. That is, as shown in FIG. 2, the fold line CL and the absorber fold line 21L overlap in the thickness direction.
  • the absorber 21 is a member formed by laminating a liquid-absorbing material, and can absorb excrement such as urine.
  • a liquid absorbent material for example, a liquid absorbent fiber such as pulp fiber, a highly absorbent polymer or the like can be used.
  • the shape of the absorber 21 is not necessarily limited to a shape extending along the longitudinal direction and having a portion confined inward in the left-right direction as shown in FIG. 2, for example, a substantially rectangular shape in a plan view. Etc. may be used.
  • the absorbent body 21 of the diaper 1 is provided with a liquid absorbent fiber having a predetermined basis weight (predetermined basis weight area).
  • the "basis weight” refers to the mass (g / m2) per unit area, and is calculated by, for example, cutting the absorber 21 into a predetermined shape and size and measuring the weight with an electronic balance or the like.
  • the absorber 21 is formed so that the basis weight is substantially uniform over substantially the entire area.
  • a central low basis weight region 50 along the longitudinal direction is provided in the central portion of the absorber 21 in the left-right direction, and the absorber 21 is provided in the left-right direction rather than the central low basis weight region 50.
  • a pair of side low basis weight regions 55 along the longitudinal direction are provided.
  • the central low basis weight region 50 and the pair of side portion low basis weight regions 55 are low basis weight regions in which the amount of liquid-absorbing fibers is smaller than the predetermined basis weight, and in the present embodiment, they penetrate in the thickness direction. It is a slit. Since the central low basis weight region 50 and the side low basis weight area 55 have low basis weight liquid-absorbing fibers, the rigidity is lower than that of the predetermined basis weight area. Therefore, when mounted, the absorber 21 is more likely to bend along the central low basis weight region 50 and the pair of side low basis weight areas 55, and the absorber 21 is likely to be uneven. As a result, not only the diaper 1 fits in the crotch portion and becomes easy to move, but also the appearance (appearance) in the worn state is further improved.
  • core wrap sheet 22 examples include tissue paper and non-woven fabric. However, these core wrap sheets 22 are not indispensable configurations.
  • the top sheet 23 is a sheet that forms a skin contact surface that can come into direct contact with the wearer's skin, and is, for example, a flat-sized liquid-permeable non-woven fabric that is larger than the absorber 21.
  • the film sheet 24 is a sheet-like member that covers the absorber 21 from the non-skin side, and is a flat-sized sheet that is larger than the absorber 21.
  • An example of the film sheet 24 is a liquid-impermeable leak-proof sheet such as polyethylene or polypropylene.
  • the back sheet 25 is a liquid-impermeable sheet that covers the absorber 21 from the non-skin side.
  • the size of the back sheet 25 in the left-right direction is sufficiently larger than that of the film sheet 24, and the center in the left-right direction is the position where both ends in the left-right direction form the left-right end 20e of the absorbent body 20 as a folded position. Fold back to the side (inside). Further, when the film sheet 25 is folded back, the back sheet 25 is folded back so as to sandwich both ends of the film sheet 24 in the left-right direction.
  • a leg elastic member 26 such as a rubber thread is fixed in a state of being extended in the longitudinal direction, thereby imparting elasticity to the leg and gathering the leg gather portion LG. Is formed.
  • the leg gathering portion LG is a region of the absorbent main body 20 outside the absorbent body 21 in the left-right direction. Further, the leg circumference gather LG is folded in half in the front-rear direction by the gather fold line LGL by folding the diaper 1 in half at the fold line CL. That is, as shown in FIG. 2, the fold line CL and the gather fold line LGL overlap in the thickness direction.
  • the diaper 1 has a vertical expansion / contraction region 30 (a vertical expansion / contraction region 30) composed of a plurality of central expansion / contraction members 31 such as rubber threads arranged along the longitudinal direction of the absorber 21 in the central portion in the left-right direction. It is preferable to have a portion indicated by a diagonal line downward to the left).
  • the central elastic member 31 is provided on the non-skin side in the thickness direction of the absorber 21, and is provided between the film sheet 24 and the back sheet 25 in the present embodiment.
  • the vertical expansion / contraction region 30 refers to a region formed along the longitudinal direction by the two central expansion / contraction members 31.
  • the central elastic member 31 may be provided on the skin side of the film sheet 24 and on the non-skin side of the film sheet 24 and the absorber 21. Further, in the present embodiment, the central elastic member 31 is two rubber threads, but the number is not limited to this, and may be a single number or a plurality of two or more, and is not limited to rubber threads or the like, for example, elasticity. It may be a band-shaped elastic sheet or the like having When there are a plurality of central expansion / contraction members 31, the length in the left-right direction between the outermost expansion / contraction members in the left-right direction is defined as the length in the left-right direction of the vertical expansion / contraction region 30, and the left-right direction of the plurality of central expansion / contraction members 31.
  • the vertical expansion / contraction region 30 is defined as the space between the outermost expansion / contraction members.
  • the length of the vertically stretchable region 30 in the longitudinal direction is the length of the effective length of the central stretchable member 31.
  • the horizontal length of each elastic member or sheet is the horizontal length of the vertical telescopic region 30, and the effective length of each elastic member or sheet is long. Is the length of the vertical expansion / contraction region 30 in the longitudinal direction.
  • the vertical expansion / contraction region 30 formed by the central expansion / contraction member 31 imparts elasticity to the diaper 1 in the longitudinal direction, particularly to the inseam, making it easier to pull up the inseam 12. As a result, the fit of the crotch portion can be improved, and the length of the crotch portion 12 in the vertical direction can be further shortened.
  • FIG. 4 is a schematic view showing a state when the leg circumference opening LH is viewed from the waist circumference opening BH.
  • the wearer intends to wear the diaper 1 by himself / herself, he / she spreads the waist opening BH by hand and confirms the leg opening LH from the waist opening BH as shown in FIG. Then, check the position to put the leg.
  • the wearer recognizes the leg path for inserting the leg into the waist opening BH, passing through the leg opening LH, and completely passing the leg. To do.
  • leg circumference opening LH when viewed from the waist circumference opening BH shown in FIG. 4 are substantially the same as the dimensions of the natural diaper 1 shown in FIG.
  • the diaper 1 having the following configuration makes it easier for the wearer to pass the leg through the leg opening LH when wearing the diaper 1 so that the diaper 1 can be worn more easily.
  • the “leg opening LH” refers to an annular opening formed by connecting the ventral inner end 13S and the dorsal inner end 13S of the expanded and extended diaper 1 shown in FIG. In the present embodiment, it means a portion partitioned by the exterior body 10.
  • the length H of the leg circumference opening LH in the left-right direction when worn means that the leg circumference opening LH penetrates in the vertical direction when viewed from the waist circumference opening BH. It is the length W in the left-right direction of the area.
  • the vertical length H (not shown) of the leg circumference opening LH when worn is the leg inserted from the waist circumference opening BH toward the leg circumference opening LH, looking at the diaper 1 from the front side and the rear side.
  • the upper end is the part where the legs are first visually recognized, and the lower end is the part where the diaper 1 is viewed from the front side and the rear side and the part covering the legs disappears.
  • the longer the leg circumference opening LH of the diaper 1 in the expanded and extended state is in the left-right direction, the longer the leg circumference opening LH of the diaper 1 is in the left-right direction when worn.
  • FIG. 5 is an enlarged view of a P portion in FIG.
  • a straight line connecting the inner end 13S in the left-right direction of the lower end of the joint portion 13FR and the outer end CLS in the left-right direction of the folding line CL Let it be L1.
  • the straight line L1 is a virtual line. Of the angles formed by the straight line L1 and the straight line V along the vertical direction, the smaller angle ⁇ 1 is 45 degrees or more and less than 90 degrees (45 ° ⁇ ⁇ 1 ⁇ 90 °).
  • the angle ⁇ 1 and each length are measured by the following method.
  • the diaper 1 in the natural state is laid flat on a flat surface, and a transparent acrylic plate is pressed from above the diaper 1 in a horizontal state with respect to the diaper 1.
  • the pressing pressure (force applied to the acrylic plate per unit area) for pressing the acrylic plate against the diaper 1 is set to 61.25 N / m 2 .
  • the acrylic plate has transparency enough to allow the diaper 1 to be visually recognized with the acrylic plate separated, and its size is a substantially rectangular shape having a length (vertical direction) of 400 mm, a horizontal direction (horizontal direction) of 400 mm, and a thickness of 5 mm. It is a plate, and the weight of the acrylic plate is 1 kg.
  • ⁇ 1 of the diaper 1 of the present embodiment is 47 °.
  • the length H1 and the length W1 can also be obtained by measuring in this state. Hereinafter, the same measurement is performed for each angle and each length.
  • the fold line CL of the diaper 1 is also the fold line of the exterior body 10, and the outer end CLS of the fold line CL in the left-right direction is also the outer end of the fold line of the exterior body 10 in the left-right direction.
  • the outer end CLS of the fold line CL of the diaper 1 in the left-right direction is not necessarily the outer end of the fold line CL of the exterior body 10 in the left-right direction.
  • the member constituting the fold line CL absorbs, for example, a three-piece diaper.
  • the outer end CLS of the fold line in the left-right direction may be the outer end of the fold line of the absorbent body in the left-right direction.
  • the length H1 in the vertical direction of the inner end 13S and the outer end CLS can be changed to the horizontal direction of the inner end 13S and the outer end CLS. Is shorter than the length W1 in (H1 ⁇ W1).
  • this angle ⁇ 1 approaches from 45 degrees to 90 degrees, the difference between the length H1 and the length W1 becomes larger, and the length of the opening LH in the left-right direction is made longer than the length of the leg circumference opening LH in the vertical direction. be able to.
  • the longer the length of the leg circumference opening LH in the left-right direction the easier it is for the wearer to pass the leg through the leg circumference opening LH when wearing.
  • the length W1 of the inner end 13S and the outer end CLS in the left-right direction is longer than the length H1 of the inner end 13S and the outer end CLS in the vertical direction
  • the length of the leg circumference opening LH in the left-right direction is longer.
  • the wearer tends to feel that the size of the leg circumference opening LH is larger than the size of the leg circumference opening LH when viewed from the waist circumference opening BH side as shown in FIG. 4, and the leg can easily pass through the leg circumference opening LH.
  • the length of the leg circumference opening LH in the vertical direction is shorter when the leg circumference opening LH is viewed from the waist circumference opening BH. Therefore, the length in the left-right direction tends to be longer and easier to feel. Therefore, the wearer tends to feel that the vertical length of the leg opening LH, which must pass through the leg opening LH before passing the leg, is shorter than the horizontal length, and the wearer wears the leg opening LH. The person can easily pass the leg through the leg opening LH, and the wearer can easily wear the diaper 1.
  • the inner end 13S in the left-right direction within the lower end of the joint portion 13FR and the outer end 13S in the left-right direction of the absorber folding line 21L Let it be a straight line L2 connecting the end 21LS.
  • the smaller angle ⁇ 2 is 45 degrees or more and less than 90 degrees (45 ° ⁇ ⁇ 2 ⁇ 90 °).
  • the straight line L2 and the straight line V are virtual lines, respectively.
  • the angle ⁇ 2 is 45 degrees or more and less than 90 degrees
  • the length H2 of the inner end 13S and the outer end 21LS in the vertical direction is shorter than the length W2 of the inner end 13S and the outer end 21LS in the horizontal direction.
  • the angle ⁇ 2 is 46.7 °
  • the length H2 is 117.0 mm
  • the length W2 is 124.0 mm.
  • the diaper 1 has an angle ⁇ 1 ⁇ angle ⁇ 2, but is not necessarily limited to this.
  • the angle ⁇ 1> the angle ⁇ 2 may be satisfied, as in the case where the folding line CL is composed of the absorbent body 20.
  • the inner end 13S and the outer end The length H2 in the vertical direction with the 21LS can be made shorter than the length W2 in the horizontal direction with the inner end 13S and the outer end 21LS.
  • the length W2 of the inner end 13S and the outer end 21LS in the left-right direction is longer than the length H2 of the inner end 13S and the outer end 21LS in the vertical direction, the length W2 is shorter than the length H2.
  • the wearer can easily pass the leg through the leg circumference opening LH.
  • the absorber 21 is the most rigid portion not only of the absorbent body 20 but also of the diaper 1 as a whole, if the absorbent body 20 is hooked with a leg, the absorbent body 21 is pushed down, and the absorbent body 21 is pushed down accordingly. Therefore, the entire diaper 1 is easily pushed down.
  • the diaper 1 has a wider area for passing the legs of the leg circumference opening LH when worn, so that the wearer's legs are absorbent. It becomes easy to reduce the risk of getting caught in the main body 20, it becomes difficult to pull up the diaper 1 to put it in a wearing state, and it is possible to reduce the risk that the wearer loses balance.
  • the inner end 13S in the left-right direction of the lower end of the joint portion 13FR is connected to the uppermost LGS of the gather fold line LGL.
  • the straight line L3 is a virtual line.
  • the smaller angle ⁇ 3 is more preferably 45 degrees or more and less than 90 degrees (45 ° ⁇ ⁇ 3 ⁇ 90 °).
  • the length H3 of the inner end 13S and the upper end LGS in the vertical direction can be made shorter than the length W3 of the inner end 13S and the upper end LGS in the horizontal direction ( H3 ⁇ W3).
  • the angle ⁇ 3 is 57.5 °
  • the length H3 is 68.7 mm
  • the length W3 is 107.8 mm.
  • the length W3 of the inner end 13S and the upper end LGS in the left-right direction is longer than the length H3 of the inner end 13S and the upper end LGS in the vertical direction, the length W3 is shorter than the length H3 when worn. In addition, it becomes easier to pass the leg through the leg opening LH. In particular, when the leg is hooked on the leg circumference gather portion LG, it is difficult to extend the leg circumference elastic member 26 of the leg circumference gather portion LG with the leg to remove the caught state, and the wearer may lose the balance. ..
  • the diaper 1 can have a length W3 longer than the length H3, and the length W of the leg circumference opening LH when worn can be made longer in the left-right direction. As a result, the wearer has a wider area for passing the legs, so that the possibility that the wearer's legs are caught by the leg circumference gather portion LG is reduced, and the legs can be easily passed through the leg circumference opening LH.
  • the inner end 13T in the left-right direction of the upper end of the joint portion 13FR and the inner end 13S in the left-right direction of the lower end of the joint portion 13FR are connected with and is referred to as a joint line segment S4.
  • the start and end points of the joint line segment S4 are the inner end 13T and the inner end 12S.
  • the inner end 13T, which is the upper end of the joint line segment S4 is located on the other side in the left-right direction from the inner end 13S, which is the lower end of the joint line segment S4. That is, it is preferable that the joint line segment S4 has a shape that expands outward in the left-right direction from the upper side to the lower side.
  • the line segment S1 connecting the inner end 13S in the left-right direction of the lower end of the joint portion 13FR and the outer end CLS in the left-right direction of the folding line CL is used, the line segment 1 and the joint line segment S4 It is more preferable that the angle ⁇ 4 formed by the two is larger than 90 degrees ( ⁇ 4> 90 °).
  • the line segment S1 connecting the outer end CLS in the left-right direction of the fold line CL is the inner end 13S of the lower end of the joint portion 13FR in the left-right direction and the outer end 13S of the fold line CL in the left-right direction of the straight line L1. It is a line segment with the end CLS as the start point and the end point.
  • the angle ⁇ 4 formed by the line segment S1 and the joint line segment S4 is made smaller than 90 degrees to reduce the risk of excessively tightening the wearer's waistline, while improving the fit to the wearer's waistline. It is improving.
  • the outer shapes of the diaper 1, the ventral waist circumference portion 11F and the dorsal waist circumference portion 11R expand from the upper side to the lower side. Since it can be recognized that the diaper is inclined to the diaper, it is easy to recognize that the length of the leg opening LH in the left-right direction is longer, and the diaper 1 having the leg opening LH that allows the legs to easily pass through is worn. It becomes easier for people to recognize.
  • the vertical expansion / contraction region 30 provided in the inseam 12 and the low basis weight region have a portion that overlaps in the thickness direction.
  • the vertical expansion / contraction region 30 and the central low basis weight region 50 overlap in the thickness direction.
  • the absorber 21 having a predetermined basis weight has high rigidity, but the central low basis weight region 50 has lower rigidity than the predetermined basis weight region, and is therefore easily affected by the contraction force of the vertical expansion / contraction region 30.
  • the vertical expansion / contraction region 30 and the central low basis weight region 50 have a portion that overlaps in the thickness direction, a stronger contraction force acts in the vertical direction on the portion 150, and the crotch portion 12 can be easily pulled upward. ..
  • the wearer can easily pass the leg through the leg opening LH.
  • the vertical expansion / contraction region 30 of the present embodiment is provided in the ventral waist circumference portion 11F and the dorsal waist circumference portion 11R, and the vertical expansion / contraction region 30 of the ventral waist circumference portion 11F and the vertical expansion / contraction region 30 of the dorsal waist circumference portion 11R are formed. It is continuous.
  • the vertical length of the vertical expansion / contraction region 30F in the ventral waist circumference portion 11F (ventral side) is the vertical expansion / contraction region 30R in the dorsal waist circumference portion 11R (dorsal side). It is preferably longer than the vertical length of.
  • the wearer tries to put his leg toward the front side when wearing it.
  • the vertical expansion / contraction region 30F of the ventral waist circumference portion 11F is more easily contracted than the vertical expansion / contraction region 30R of the dorsal waist circumference portion 11R, so that the shape of the leg circumference opening LH opens toward the front side (ventral side). It becomes easy to bend as it does. Therefore, the leg circumference opening LH at the time of wearing tends to have a shape corresponding to the movement of the wearer's leg, and the wearer can easily pass the leg through the leg circumference opening LH.
  • the vertical expansion / contraction region 30 and the left / right expansion / contraction region 140 have overlapping portions in the thickness direction. Specifically, as shown in FIG. 2, the vertical stretchable region 30 of the diaper 1 and the straight line portion 140s of the horizontal stretchable region 140 intersect, and the portion 150 overlaps in the thickness direction. As a result, a force for pulling the crotch portion 12 of the vertical expansion / contraction region 30 upward is applied to the left / right expansion / contraction region 140, and the vertical expansion / contraction region 30 and the left / right expansion / contraction region 140 are interlocked to pull the crotch portion 12 upward. It will be improved.
  • each angle ⁇ 1 to ⁇ 3 can be brought closer to 90 degrees, and the leg circumference opening LH when worn is left and right than the length H in the vertical direction. Since the length W in the direction can be increased, the wearer's legs can be easily passed through the leg circumference opening LH.
  • the length of the absorber 21 in the folding line CL in the left-right direction is shorter than the longest portion 21a.
  • the opening area of the leg circumference opening LH when worn can be made wider than in the case where the length of the absorber 21 in the folding line CL in the left-right direction is the length of the longest portion 21a. Since the length W of the leg circumference opening LH in the left-right direction during wearing can be made wider, the wearer can easily pass the leg through the leg circumference opening LH.
  • the narrowest portion 21b on the ventral side of the folding line CL it becomes easier for the wearer to pass the leg through the leg circumference opening LH. Since humans have a posture in which their legs are forward on the skeleton, they often try to put their legs forward when wearing them. Therefore, by providing the narrowest portion 21b of the absorber 21 on the ventral side, which is the front side of the body, it becomes easier to open the ventral leg circumference opening LH wider when wearing, and the legs when wearing. Since it is easy to widen the length W in the left-right direction on the ventral side of the rotation opening LH, the wearer can easily pass the leg through the leg rotation opening LH.
  • FIG. 6 is an enlarged view of the Q portion in FIG. 2 as viewed from the non-skin side.
  • the lower end of the joint portion 13FR of the stretched diaper 1 is located on the other side in the left-right direction from the upper end of the joint portion 13FR.
  • the left and right elastic region 140 is provided in the dorsal waist circumference portion 11R, but the left and right elastic region 140 may be provided in the ventral waist circumference portion 11F, and both the dorsal waist circumference portion 11R and the ventral waist circumference portion 11F may be provided.
  • the left and right telescopic region 140 may be provided in the left and right telescopic region 140.
  • the left-right expansion / contraction region 140 has a shape including a curved portion 140c and a straight portion 140s, but the shape is not necessarily limited to this shape. It suffices if it can expand and contract at least in the left-right direction.
  • the left-right expansion / contraction region 140 does not necessarily have to be continuous from one side end portion of the waist circumference portion 11 to the other side side end portion. It may be a left-right expansion / contraction region 140 having a discontinuous portion.
  • the absorber 21 is provided with the central low basis weight region 50 and the pair of side portion low basis weight areas 55, but the central low basis weight area 50 and the pair of side portion low basis weight areas 55 may be arranged.
  • the number is not limited to these.
  • At least one or more low basis weight regions may be provided along the longitudinal direction of the absorber 21.
  • a pair of low basis weight regions may be provided along the longitudinal direction of the absorber 21.
  • the low basis weight area is for making it easy for the absorber 21 to bend along the flexible axis when the diaper 1 is worn, and the position of the low basis weight area depends on the person wearing the diaper, the size of the diaper, and the like. And the number can be changed.
  • the vertical expansion / contraction region 30 is provided in the ventral waist circumference portion 11F and the dorsal waist circumference portion 11R, and the vertical expansion / contraction region 30 of the ventral waist circumference portion 11F and the vertical expansion / contraction region 30 of the dorsal waist circumference portion 11R are continuous.
  • the configuration is limited to this.
  • the vertical expansion / contraction region 30 of the ventral waist circumference portion 11F and the vertical expansion / contraction region 30 of the dorsal waist circumference portion 11R may be separated, and may be located on either the ventral waist circumference portion 11F or the dorsal waist circumference portion 11R.
  • the vertical expansion / contraction region 30 may be arranged.
  • the inseam portion 12 can be pulled up further upward.
  • the length of the inseam 12 in the vertical direction and the fit of the inseam 12 when worn can be appropriately changed.
  • the vertical length of the vertical expansion / contraction region 30R of the dorsal waist circumference portion 11R may be longer than the vertical length of the vertical expansion / contraction region 30F of the ventral waist circumference portion 11F.
  • the area of the exterior body 10 is wider in the dorsal girth portion 11R than in the ventral girth portion 11F in order to cover the buttocks. Therefore, the dorsal girth portion 11R covers the leg circumference opening LH more widely than the ventral girth portion 11F.
  • the vertical expansion / contraction region 30R of the dorsal waist circumference portion 11R is made longer than the vertical length of the vertical expansion / contraction region 30F of the ventral waist circumference portion 11F, the vertical expansion / contraction region 30
  • the dorsal waist circumference 11R can be more easily curved toward the non-skin side, and the portion corresponding to the buttocks of the dorsal waist circumference 11R. Is easier to deform so that it is farther away from the ventral side. This makes it easier for the wearer to reduce the risk that the heel will come into contact with the dorsal waist circumference portion 11R and get caught during wearing.
  • the so-called two-piece type diaper 1 is formed by connecting the ventral inner end 13S and the dorsal inner end 13S of the unfolded and extended diaper 1 by connecting the waist opening LH. It is an annular opening, and is a portion partitioned by the exterior body 10, but the present invention is not limited to this.
  • the leg circumference opening LH is a portion partitioned by a ventral waist circumference portion, an inseam portion, and a dorsal waist circumference portion.
  • the diaper 1 in the extended state is provided with the lower end of the joint portion 13FR on the other side in the left-right direction from the upper end of the joint portion 13FR, and the waist circumference portion 11 is provided from the waist circumference opening BH to the leg circumference opening LH.
  • the shape expands toward, but it is not limited to this.
  • the upper end and the lower end of the joint portion 13FR may be provided at the same position in the left-right direction.
  • the contraction force acting on the upper side of the waist circumference portion 11 is made larger than the contraction force acting on the lower side, so that the waist circumference b11 is shaped to expand from the waist circumference opening BH toward the leg circumference opening LH. be able to.
  • the contraction force of the waist circumference portion 11 can be appropriately changed depending on the number of waist circumference elastic members 130 (ventral side waist circumference elastic member 130F, dorsal waist circumference elastic member 130R) and the magnitude of the extension force.
  • 1 diaper (pants type disposable diaper, pants type absorbent article), 10 exterior body, 11 waist circumference, 11F ventral waist circumference, 11R dorsal waist circumference, 12 crotch, 13F side end, 13R side end, 13FR Joint part, 20 absorbent body, 20e edge, 21 absorber, 22 core wrap sheet, 23 top sheet, 24 film sheet, 25 back sheet, 26 leg circumference elastic member, 30 vertical elastic region, 31 central elastic member, 50 center Low basis weight area, 55 side low basis weight area, 110 exterior top sheet, 120F front exterior back sheet, 120R rear exterior back sheet, 130F ventral waistline elastic member, 130R dorsal waistline elastic member, 140 left and right expansion and contraction area, 140c curved part, 140s straight part, BH waist circumference opening, LH leg circumference opening, CL fold line, LG leg circumference gather part, LGL gather fold line

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

Abstract

L'invention concerne un article absorbant de type sous-vêtement (1) ayant une direction haut-bas, une direction gauche-droite et une direction avant-arrière qui se croisent les unes avec les autres dans un état normal, étant équipé d'une partie de taille ventrale (11F), d'une partie de taille dorsale (11R), et d'une partie d'entrejambe (12), la partie d'entrejambe (12) étant pliée en deux dans la direction avant-arrière au niveau d'une ligne de pliage inférieure (CL), et ayant une ouverture pour la taille (BH) et une paire d'ouvertures pour les jambes (LH), une partie de bord latéral (13F) de la partie de taille ventrale (11F) et une partie de bord latéral (13R) de la partie de taille dorsale (11R) étant reliées par une partie de jonction (13FR), et le plus petit des angles (θ1) formé par une ligne droite (L1) qui relie une extrémité interne (13S) dans la direction gauche-droite parmi les extrémités inférieures de la partie de jonction (13FR) avec une extrémité externe (CLS) dans la direction gauche-droite parmi les lignes de pliage (CL) sur un côté de la direction gauche-droite et une ligne droite (V) le long de la direction haut-bas est de 45° à moins de 90°.
PCT/JP2020/024189 2019-08-21 2020-06-19 Article absorbant de type sous-vêtement WO2021033408A1 (fr)

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CN202080054257.9A CN114173732B (zh) 2019-08-21 2020-06-19 内裤型吸收性物品

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JP2019150878A JP7473307B2 (ja) 2019-08-21 2019-08-21 パンツ型吸収性物品
JP2019-150878 2019-08-21

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WO2021033408A1 true WO2021033408A1 (fr) 2021-02-25

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CN (1) CN114173732B (fr)
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JP5749942B2 (ja) * 2011-03-08 2015-07-15 ユニ・チャーム株式会社 使い捨て着用物品
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WO2009081505A1 (fr) * 2007-12-25 2009-07-02 Koyo Corporation Couche de type slip
JP2011177309A (ja) * 2010-02-27 2011-09-15 Unicharm Corp 使い捨て着用物品
JP2017217159A (ja) * 2016-06-06 2017-12-14 ユニ・チャーム株式会社 吸収性物品
JP2019118556A (ja) * 2017-12-28 2019-07-22 ユニ・チャーム株式会社 パンツ型吸収性物品

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