WO2013187273A1 - Article absorbant - Google Patents

Article absorbant Download PDF

Info

Publication number
WO2013187273A1
WO2013187273A1 PCT/JP2013/065348 JP2013065348W WO2013187273A1 WO 2013187273 A1 WO2013187273 A1 WO 2013187273A1 JP 2013065348 W JP2013065348 W JP 2013065348W WO 2013187273 A1 WO2013187273 A1 WO 2013187273A1
Authority
WO
WIPO (PCT)
Prior art keywords
basis weight
region
absorbent core
width direction
block
Prior art date
Application number
PCT/JP2013/065348
Other languages
English (en)
Japanese (ja)
Inventor
佐藤　信也
茂人 柳原
美奈 富田
彦行 鈴木
Original Assignee
花王株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 花王株式会社 filed Critical 花王株式会社
Priority to RU2014152733/12A priority Critical patent/RU2598564C2/ru
Priority to CN201380029609.5A priority patent/CN104334141B/zh
Publication of WO2013187273A1 publication Critical patent/WO2013187273A1/fr

Links

Images

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
    • A61F13/49007—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
    • A61F13/53—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
    • A61F13/533—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 having discontinuous areas of compression
    • 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
    • A61F13/539—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 characterised by the connection of the absorbent layers with each other or with the outer layers

Definitions

  • the present invention relates to an absorbent article such as a disposable diaper.
  • An absorbent article using a block-shaped absorber provided with a groove-like space extending in the plane direction is known (see Patent Document 1).
  • the absorber is pressed by embossing to form a concave portion with a small thickness, and the non-pressed portion is a convex portion with a large thickness. Therefore, the basis weight of the absorbent body is the same between the concave portion and the convex portion, and the concave portion is consolidated compared to the convex portion.
  • Patent Document 2 Regarding an absorbent article using a block-shaped absorbent body (absorbent core), the present applicant also disclosed in Patent Document 2 an absorption having a plurality of small absorbent portions and a base sheet positioned on the non-skin contact surface side.
  • the absorbent article provided with the property core is proposed.
  • the adjacent small absorption parts are divided, and a recess is formed between them. Unlike the recess described in Patent Document 1, this recess is not formed by being consolidated.
  • an elastic member in the absorbent article, is generally arranged in an expanded state for the purpose of fitting the absorbent article to the wearer's body. Since this elastic member contracts in a relaxed state of the absorbent article, the block-shaped absorbent body (absorbent core) is deformed due to the contraction, or the recesses between the blocks are crushed. Thus, the original absorption performance possessed by the block-shaped absorber (absorbent core) may not be sufficiently exhibited. In particular, the tendency increases as the block size decreases.
  • the present invention provides an absorbent article having a top sheet, a back sheet, and an absorbent body disposed between the top sheet and the back sheet, and having a longitudinal direction and a width direction perpendicular thereto.
  • the absorber has an absorbent core that includes a superabsorbent polymer.
  • the absorbent article has two stretchable regions in which elastic members extending in the width direction are fixedly arranged in a stretched state, and a non-stretchable region positioned between the two stretchable regions along the width direction.
  • the said absorptive core has a non-block area
  • the block region is composed of a high basis weight portion having a relatively high basis weight and a low basis weight portion having a relatively low basis weight, and the periphery of each high basis weight portion is covered by the low basis weight portion over the entire area.
  • the high basis weight portion is surrounded by a plurality of independent block structures.
  • the high basis weight portion is regularly arranged, and the block region is arranged in the non-stretchable region.
  • the fixed end of the elastic member is located in the non-blocking region.
  • the present invention also provides an absorbent article having a top sheet, a back sheet, and an absorbent body disposed between the top sheet and the back sheet, and having a longitudinal direction and a width direction perpendicular thereto.
  • the absorber has an absorbent core that includes a superabsorbent polymer.
  • the absorbent article has two stretchable regions in which elastic members extending in the width direction are fixedly arranged in a stretched state, and a non-stretchable region positioned between the two stretchable regions along the width direction.
  • the said absorptive core has a non-block area
  • the block area is formed by integrally molding a high basis weight portion having a relatively high basis weight and a low basis weight portion having a relatively low basis weight, and the periphery of each high basis weight portion is spread over the entire area.
  • the high basis weight part has a plurality of independent block structures surrounded by the low basis weight part. And the outermost periphery of this block structure is enclosed by this low basic weight part.
  • the high basis weight portion is regularly arranged, and the block region is arranged in the non-stretchable region.
  • the fixed end of the elastic member is located in the non-blocking region.
  • the absorbent core since the absorbent core has a block structure, the absorbent core becomes flexible, and the absorbent core can be easily conformed to the shape of the wearer's body. Moreover, since the excreted liquid is guided to the concave portion of the block structure, the diffusibility in the planar direction of the absorbent core is improved. Furthermore, the absorbent core can be brought into close contact with the wearer's body by contraction of the elastic member while suppressing deformation of the block structure of the absorbent core due to the contraction of the elastic member.
  • FIG. 1 is a plan view of a pants-type disposable diaper, which is an embodiment of the absorbent article of the present invention, as viewed from the top sheet side.
  • FIG. 2 is a plan view of a state in which the diaper shown in FIG.
  • FIG. 3 is a plan view of the diaper exterior body 3 shown in FIG. 1 as viewed from the skin contact surface side.
  • FIG. 4 is an exploded perspective view of the absorbent core in the absorbent main body of the diaper shown in FIG. 5 (a) is a plan view of a second absorbent core in the absorbent core shown in FIG. 4, and FIGS. 5 (b) and 5 (c) are cross-sectional views taken along line bb in FIG. 5 (a), respectively. It is cc sectional view taken on the line.
  • FIG. 6 (a) is a plan view of the first absorbent core in the absorbent core shown in FIG. 4, and FIGS. 6 (b) and 6 (c) are cross-sectional views taken along the line bb in FIG. 6 (a), respectively. It is cc sectional view taken on the line.
  • FIG. 7 is a schematic diagram illustrating an example of an apparatus for manufacturing the first absorbent core and the second absorbent core in the absorbent core illustrated in FIG. 4.
  • FIG. 8 is a schematic cross-sectional view along the width direction of a part (concave portion) on the outer peripheral surface side of the rotating drum shown in FIG.
  • FIG. 9 is a schematic cross-sectional view showing a state where an absorbent material is deposited in the concave portion of the rotating drum shown in FIG.
  • FIG. 10 is the top view which looked at the expansion-type disposable diaper which is another embodiment of the absorbent article of this invention from the surface sheet side.
  • FIG. 11 is an exploded perspective view of the diaper shown in FIG.
  • FIG. 12 is a cross-sectional view taken along the line XX of the absorbent core of the diaper shown in FIG. Fig.13 (a) thru
  • FIG. 1 is a perspective view of a pants-type disposable diaper that is an embodiment of the absorbent article of the present invention.
  • FIG. 2 is a plan view in which the diaper shown in FIG. 1 is opened at its side seal portion and developed in a plane as viewed from the surface sheet side.
  • the diaper 10 shown in FIGS. 1 and 2 is a so-called pants-type diaper.
  • the diaper 10 has a longitudinal direction Y and a width direction X orthogonal thereto.
  • the diaper 10 includes an absorbent main body 20 and an exterior body 30 located on the non-skin contact surface side of the absorbent main body 20.
  • the diaper 10 has a crotch portion C located in the central region in the longitudinal direction X, and a ventral side portion A and a back side portion B extending from the crotch portion C forward and backward in the longitudinal direction.
  • the ventral portion A is arranged on the wearer's ventral side when the diaper 10 is worn.
  • the back part B is arranged on the wearer's back side when the diaper 10 is worn.
  • the crotch part C is arranged on the wearer's crotch when the diaper 10 is worn.
  • non-skin contact surface side refers to the side (surface) that is disposed on the opposite side of the skin side of the wearer when worn among the front and back sides (surfaces) of each member such as the absorbent main body 20. ).
  • “Skin contact surface side” is the side (surface) that is disposed on the skin side of the wearer when worn, out of the front and back sides (surfaces) of each member.
  • the abdominal side A side is also referred to as “front side”
  • the back side A side is also referred to as “rear side”.
  • the absorbent main body 20 has a vertically long rectangular shape, and a known joining means such as a hot-melt adhesive is used so that its longitudinal direction coincides with the longitudinal direction of the diaper and extends from the abdominal side A to the back side B.
  • a known joining means such as a hot-melt adhesive is used so that its longitudinal direction coincides with the longitudinal direction of the diaper and extends from the abdominal side A to the back side B.
  • the outer body 30 is joined to the central portion in the width direction.
  • the exterior body 30 is configured such that both side edges of the portion located on the ventral side A and both side edges of the portion located on the back side B are connected to each other by known joining means such as heat seal, high frequency seal, and ultrasonic seal. It is joined. Accordingly, a pair of side seal portions S is formed on the diaper 10.
  • the waist opening part 11 and a pair of leg opening parts 12 and 12 are formed in the diaper 10 by the joining, and the exterior body 30 becomes a pants-type solid shape.
  • the absorptive main body 20 includes a top sheet 21, a back sheet (not shown), and an absorber disposed between both sheets.
  • the absorbent body is composed of an absorbent core 22 containing a superabsorbent polymer and a covering material that wraps the absorbent core 22.
  • the top sheet 21 is made of a liquid-permeable sheet and faces the wearer's skin when the diaper 10 is worn.
  • the back sheet is made of a liquid-impermeable or water-repellent sheet and faces the outer package 30.
  • the same ones conventionally used in the technical field can be used without particular limitation.
  • a liquid-permeable nonwoven fabric or a perforated film can be used as the top sheet 21 .
  • the back sheet a liquid-impervious film made of a synthetic resin, a water-repellent nonwoven fabric with high water pressure resistance such as a spunbond-meltblown-spunbond laminated nonwoven fabric, or the like can be used.
  • the back sheet may have water vapor permeability.
  • the back sheet is preferably a liquid impermeable film made of a synthetic resin having water vapor permeability.
  • FIG. 3 shows a plan view of the exterior body 30 as viewed from the skin contact surface side.
  • the exterior body 30 includes an inner layer sheet 31 and an outer layer sheet 32, and elastic members of respective parts fixed between the two sheets. The elastic member of each part will be described later.
  • the outer edge of the exterior body 30 forms the outline of the unfolded diaper 10.
  • the inner layer sheet 31 and the outer layer sheet 32 have the same shape.
  • the outer layer sheet 32 has an extending portion that extends outward in the longitudinal direction from the front end edge and the rear end edge of the inner layer sheet 31. The extending portion is folded back from the front end edge and the rear end edge of the inner layer sheet 31 toward the skin contact surface side, and covers the front end area and the rear end area in the longitudinal direction of the absorbent main body 20.
  • the inner layer sheet 31 and the outer layer sheet 32 are preferably composed of the same or different breathable sheets, for example, non-woven fabrics manufactured by various methods.
  • a plurality of waist elastic members 33 extending in the width direction of the diaper 10 along the opening edge W are arranged in an extended state on the waist opening edge W of the exterior body 30.
  • a plurality of leg elastic members 34 are arranged along the opening edge L in an extended state on the leg opening edge L of the exterior body 30.
  • one end of the leg elastic member 34 is located in the vicinity of the boundary between the abdominal part A and the crotch C, and in the vicinity of the boundary between the dorsal part B and the crotch C, and from there to the leg opening edge L Extending to the central area in the longitudinal direction of the crotch C and turning inward in the longitudinal central area of the crotch C and terminating before reaching the central area in the width direction of the crotch C.
  • the leg elastic member 34 is not disposed in the center region in the width direction of the crotch portion C. Therefore, when the crotch part C is viewed along the width direction in the central region in the longitudinal direction of the crotch part C, the leg elastic members 34 extending in the width direction are fixedly arranged in an expanded state as shown in FIG. Two stretch regions, that is, crotch stretch regions C1 and C2, and a non-stretch region located between them, that is, a crotch non-stretch region C3 are formed. In short, the crotch stretch region C1, the crotch non-stretch region C3, and the crotch stretch region C2 are formed in this order along the width direction.
  • a plurality of waistline elastic members 35 extending in the width direction of the diaper 10 are disposed in an extended state between the waist elastic member 33 and the leg elastic member 34.
  • One end of the waistline elastic member 35 is located in the vicinity of each side seal portion S, and the other end terminates before reaching the center region in the width direction of the diaper 10, and forms a non-stretchable region in the center region in the width direction. .
  • the waistline stretchable region D1, D2 and a non-stretchable region where the elastic member located between them is not disposed that is, a waistline non-stretchable region D3 is formed.
  • the non-stretchable region D3 is a portion of the waistline elastic member 35 that is located on the inner side in the width direction of the stretchable region, and is a fixing portion of the elastic member 35 that is located in the left and right non-blocking regions of the absorbent core 22 Arranged in between.
  • a waistline stretchable region D1, a waistline non-stretchable region D3, and a waistline stretchable region D2 are formed along the width direction in this order, and D1 and D2 exist on both sides of the width direction across D3.
  • the diaper 10 has an abdominal waist flap 40A and a back waist flap 40B that extend forward and rearward from the longitudinal front and rear ends of the absorbent core 22 and extend in the width direction, respectively.
  • the ventral waist flap 40 ⁇ / b> A and the back waist flap 40 ⁇ / b> B are configured by the exterior body 30.
  • FIG. 4 is an exploded perspective view of the absorbent core 22 in the absorbent main body 20.
  • the absorbent core 22 includes a first absorbent core 210 and a second absorbent core 220.
  • the first absorbent core 210 is disposed on the non-skin contact surface side
  • the second absorbent core 220 is disposed on the skin contact surface side.
  • the first absorbent core 210 and the second absorbent core 220 are entirely covered with a liquid-permeable sheet, whereby the absorbent core 22 is configured.
  • FIG. 5A shows a plan view of the second absorbent core 220.
  • 5B and 5C are a cross-sectional view taken along the line bb and a cross-sectional view taken along the line cc in FIG. 5A, respectively.
  • the second absorbent core 220 has a vertically long shape extending in the same direction as the longitudinal direction of the diaper 1 in a plan view, and is symmetric with respect to the longitudinal center line CL.
  • the second absorbent core 220 has a front end edge 221a and a rear end edge 221b.
  • the front end edge 221a is located closer to the ventral portion A and extends linearly in the width direction.
  • the rear end edge 221b is located closer to the back side B and extends linearly in the width direction.
  • the front edge 221a and the rear edge 221b are substantially parallel. Further, the rear end edge 221b is longer than the front end edge 221a.
  • the second absorbent core 220 has a pair of side edges 222 extending in the longitudinal direction.
  • the shape of the side edge 222 is symmetric with respect to the longitudinal center line CL.
  • the side edge 222 is a curved line connecting the first straight line portion 222a located near the front end edge 221a, the second straight line portion 222b located near the rear end edge 221b, and the first straight line portion 222a and the second straight line portion 222b.
  • the pair of first linear portions 222 a are parallel to each other, and the extending direction thereof coincides with the longitudinal direction of the second absorbent core 220.
  • the pair of second linear portions 222b are also parallel to each other, and the extending direction thereof coincides with the longitudinal direction of the second absorbent core 220.
  • the distance between the pair of first straight portions 222a is larger than the distance between the pair of second straight portions 222b.
  • the distance between the pair of second linear portions 222b substantially matches the length of the rear end edge 221b.
  • the distance between the pair of first straight portions 222a substantially matches the length of the front end edge 221a.
  • the extending length of the first straight portion 222a is shorter than the extending length of the second straight portion 222b.
  • a curved portion 222c that connects the first straight portion 222a and the second straight portion 222b has a slightly curved curve toward the inside in the width direction of the second absorbent core 220. The two straight portions 222b are smoothly connected.
  • the second absorbent core 220 has a first surface 223a and a second surface 223b.
  • the 1st surface 223a is a skin contact surface, and has faced the surface sheet 21 or the intermediate sheet (not shown) side used as needed.
  • the second surface 223b is the non-skin contact surface side and faces the first absorbent core 210 side.
  • the second absorbent core 220 has a relatively high basis weight and is adjacent to the high basis weight portion 224a having a convex shape protruding toward the non-skin contact surface side, and the high basis weight portion 224a, and is relatively And has a low basis weight portion 224b that is recessed toward the skin contact surface side.
  • the high basis weight part 224a and the low basis weight part 224b are integrally formed.
  • the non-skin contact surface side has an uneven structure, and the skin contact surface side is flat.
  • the low basis weight portion 224 b has a plurality of the low basis weight portions 224 b extending in parallel with the longitudinal direction of the second absorbent core 220.
  • a plurality of the low basis weight portions 224 b also extend in the width direction of the second absorbent core 220.
  • the low basis weight part 224b has an orthogonal lattice shape extending in the longitudinal direction and the width direction of the second absorbent core 220.
  • the high basic weight part 224a is located in the grating
  • each high basic weight part 224a is substantially the same, it is rectangular in plan view, and the length in the longitudinal direction is larger than the length in the width direction.
  • the low basis weight part 224b extends in the longitudinal direction and the width direction of the second absorbent core 220 and is connected to each other to form a continuous body.
  • the width of the low basis weight portion 224b extending in the longitudinal direction of the second absorbent core 220 and the width of the low basis weight portion 224b extending in the width direction of the second absorbent core 220 may be the same or different. May be.
  • the second absorbent core 220 has a block structure including a plurality of high basis weight portions 224a having a relatively high basis weight and low basis weight portions 224b having a relatively low basis weight. And the periphery of each high basic weight part 224a is surrounded by the low basic weight part 224b over the whole area, and is provided with the block area
  • the minimum value with respect to the basic weight of the high basic weight part 224a is preferably 20%, and more preferably 30%.
  • the upper limit is preferably 80%, more preferably 70%.
  • the lower limit of the basis weight of the high basis weight portion 224a itself is preferably 150 g / m 2 , and more preferably 250 g / m 2 .
  • the upper limit is preferably 800 g / m 2 , more preferably 700 g / m 2 .
  • the lower limit value of the basis weight is preferably 50 g / m 2 , and more preferably 100 g / m 2 .
  • the upper limit is preferably 500 g / m 2 , more preferably 400 g / m 2 .
  • the basis weight is measured by the following method. That is, it cut
  • Ten pieces of the high basis weight portion 224a obtained by cutting were each measured using an electronic balance (Electronic balance GR-300 manufactured by A & D, accuracy: 4 digits after the decimal point), and the small piece 1 of the high basis weight portion 224a was measured. Find the average weight of the pieces.
  • the calculated average weight is divided by the average area per piece of the high basis weight portion 224a to calculate the basis weight of the high basis weight portion 224a.
  • the length is 100 mm, and the width is adjusted to the design dimension of the width of the low basis weight part 224b.
  • 5 small pieces of the thin striped low basis weight portion 224b are cut out.
  • Each of the 5 pieces obtained was measured using an electronic balance (Electronic Balance GR-300 manufactured by A & D, accuracy: 4 digits after the decimal point), and averaged to obtain the average weight of one piece of the low basis weight portion 224b. .
  • the basis weight of the low basis weight part 224b is calculated by dividing the obtained average weight by the average area per piece of the small basis weight part 224b.
  • the high basis weight part 224a not only has a larger basis weight than the low basis weight part 224b, but also has a larger thickness.
  • the lower limit of the thickness of the low basis weight portion 224b is preferably 30%, and more preferably 40%, with respect to the thickness of the high basis weight portion 224a.
  • the upper limit is preferably 90%, more preferably 80%.
  • the lower limit of the thickness of the high basis weight portion 224a itself is preferably 1.5 mm, and more preferably 2.5 mm.
  • the upper limit is preferably 8 mm, more preferably 6 mm.
  • the lower limit of the thickness is preferably 0.5 mm, and more preferably 1 mm.
  • the upper limit is preferably 5 mm, more preferably 4 mm.
  • the thickness of the high basis weight portion 224a and the low basis weight portion 224b is measured by the following method immediately after the sample is cut at a predetermined size, the measurement site is pressurized at 5 kPa for 10 minutes.
  • the measurement location is 3 points or more including one or more each of the abdominal part, the crotch part, and the dorsal part per sheet, and the thickness is obtained by averaging two diaper samples (6 measurement points or more).
  • the diaper 1 is cut with a sharp razor in the longitudinal direction (Y direction) or the lateral direction (X direction) shown in FIG. 2, and the cross section of the cut sample is measured.
  • the cross section of the cut sample may be observed and measured at a magnification of 20 to 100 times using, for example, a microscope (VHX-1000 manufactured by KEYENCE).
  • measurement may be performed by reducing the number of measurement points for a part where the absorbent core is not present or a part having a small area.
  • the block region is arranged from the crotch C to the ventral side A of the second absorbent core 220.
  • the block region has a crotch lower high basis weight portion group 227C provided at a position corresponding to the crotch portion C and a ventral side high basis weight portion group 227A provided at a position corresponding to the ventral side portion A. ing.
  • Each high basic weight part group is connected.
  • positioned along the width direction differs. Specifically, the number of high basis weight portions 224a in the ventral portion high basis weight portion group 227A is greater than the number of high basis weight portions 224a in the crotch lower high basis weight portion group 227C.
  • the number of high basis weight portions 224a arranged along the width direction is six, whereas In the basis weight part group 217C, the number of high basis weight parts 224a arranged along the width direction is two.
  • the width of the block region changes according to the width of the second absorbent core 220, and the block region has a larger width as the width of the second absorbent core 220 is larger.
  • positioning of the high basic weight part 224a in the abdominal part high basic weight part group 227A is the crotch height. More than the number of arrangement of the high basis weight parts 224a in the basis weight part group 227C, that is, the width of the block area in the ventral part A is larger than the width of the block area in the crotch part C.
  • a vertically long central opening 225 is formed at a position on the longitudinal center line CL of the second absorbent core 220 along the longitudinal center line CL.
  • the central opening 225 penetrates the entire thickness direction of the second absorbent core 220.
  • the central opening 225 is formed at the position of the second straight part 222b and the curved part 222c.
  • the central opening 225 is not formed at the position of the first straight part 222a.
  • the central opening 225 has one end in the longitudinal direction that does not reach the front end edge 221a, but terminates at a position closer to the rear end edge 221b than the front end edge 221a.
  • a pair of high basis weight parts 224a are located on both sides of the central opening 225 in the width direction.
  • region 226 is arrange
  • the non-blocking area 226 surrounds the entire area of the block area.
  • the block area and the non-block area 226 are partitioned by a low basis weight portion 224b located on the outermost periphery of the block area. In the non-blocking region 226, the thickness and basis weight at an arbitrary position are constant.
  • the thickness of the non-block region 226 is substantially the same as the thickness of the high basis weight portion 224a of the block region.
  • the relationship between the thickness of the non-blocking region 226 and the thickness of the high basis weight portion 224a is not limited to this, and the thickness of the non-blocking region 226 may be larger, and conversely the thickness of the high basis weight portion 224a. May be large.
  • the lower limit of the thickness of the non-blocking region 226 is preferably 2 mm, and more preferably 3 mm.
  • the upper limit is preferably 6 mm, more preferably 5 mm.
  • the method for measuring the thickness is as described above.
  • the basis weight of the non-block region 226 may be the same as or different from the basis weight of the high basis weight portion 224a of the block region. Further, the basis weight of the low basis weight portion 224b of the block region may be the same or different. Specifically, the lower limit of the basis weight of the non-block region 226 is preferably 150 g / m 2 , and more preferably 250 g / m 2 . The upper limit is preferably 800 g / m 2 , more preferably 700 g / m 2 . The method for measuring the basis weight is as described above.
  • the high basis weight portion 224a and the low basis weight portion 224b are integrally formed.
  • region 226 located in the outer periphery are also integrally molded.
  • “Integrally molded” means that these parts are integrated without being separated from each other without using a bonding means such as an adhesive or heat fusion, and are integrally formed from the same material. Means that When these parts are integrally molded, the body fluid has continuity that can move smoothly. A method for manufacturing the absorbent core having such a structure will be described later.
  • the first absorbent core 210 extends outward from the peripheral edge of the second absorbent core 220, and its outer shape is larger than that of the second absorbent core 220. Therefore, in a state where the second absorbent core 220 is disposed on the first absorbent core 210 to form the absorbent core 22, the absorbent core 22 is a peak protruding toward the skin contact surface side. The shape of the mold.
  • FIG. 6A shows a plan view of the first absorbent core 210.
  • 6B and 6C are a cross-sectional view taken along the line bb and a cross-sectional view taken along the line cc in FIG. 6A, respectively.
  • the first absorbent core 210 has a vertically long shape extending in the same direction as the longitudinal direction of the diaper 1 in a plan view, and is symmetric with respect to the longitudinal center line CL.
  • the first absorbent core 210 has a front end edge 211a and a rear end edge 211b.
  • the front end edge 211a is located closer to the ventral side A and extends linearly in the width direction.
  • the rear end edge 211b is positioned closer to the back side B and extends linearly in the width direction.
  • the front edge 211a and the rear edge 211b are substantially parallel. Further, the front end edge 211a and the rear end edge 211b have substantially the same length. Furthermore, the 1st absorptive core 210 has a pair of side edge 212 extended in a longitudinal direction. The pair of side edges 212 are substantially parallel and extend linearly in the longitudinal direction. Thus, the 1st absorptive core 210 is carrying out the planar view and has the shape of the rectangle which has a long side in a longitudinal direction.
  • the first absorbent core 210 has a first surface 213a and a second surface 213b.
  • the 1st surface 213a is a skin contact surface, and has faced the surface sheet 21 or the intermediate sheet (not shown) side used as needed.
  • the 2nd surface 213b is a non-skin contact surface side, and has faced the back surface sheet side.
  • the first absorbent core 210 has a relatively high basis weight and has a convex shape protruding toward the non-skin contact surface side, and is adjacent to the high basis weight portion 214a and is relatively And a low basis weight portion 214b having a low basis weight and recessed toward the skin contact surface side.
  • the high basis weight portion 214a and the low basis weight portion 214b are integrally formed.
  • the first absorbent core 210 has a concavo-convex structure on the non-skin contact surface side, and the skin contact surface side is flat.
  • a plurality of low basis weight portions 214 b extend in parallel with the longitudinal direction of the first absorbent core 210.
  • a plurality of the low basis weight portions 214 b also extend in the width direction of the first absorbent core 210.
  • the low basis weight portion 214b has an orthogonal lattice shape extending in the longitudinal direction and the width direction of the first absorbent core 210.
  • the high basic weight part 214a is located in the grating
  • the shapes of the respective high basis weight portions 214a are substantially the same, are rectangular in plan view, and the length in the longitudinal direction is larger than the length in the width direction.
  • the low basis weight portion 214b extends in the longitudinal direction and the width direction of the first absorbent core 210 and is connected to each other to form a continuous body.
  • the width of the low basis weight portion 214b extending in the longitudinal direction of the first absorbent core 210 and the width of the low basis weight portion 214b extending in the width direction of the first absorbent core 210 may be the same or different. May be.
  • the first absorbent core 210 has a block structure including a plurality of high basis weight portions 214a having a relatively high basis weight and low basis weight portions 214b having a relatively low basis weight.
  • the periphery of each high basis weight portion 214a is provided with block regions that are surrounded by the low basis weight portion 214b over the entire area and are individually independent. Further, the outermost periphery of the block structure is surrounded by the low basis weight portion 214b.
  • Each of the high basis weight portions 214a is surrounded by the low basis weight portion 214b, and the outermost periphery of the block structure is surrounded by the low basis weight portion 214b.
  • the block structure of the first absorbent core 210 is destroyed. Is prevented.
  • the corner portion of the low basis weight portion 214b located at the outermost periphery of the block structure is rounded to draw a convex curve toward the outside, the leg elastic member 34 and the waistline elastic member are formed at the corner portion. Since the stress due to the shrinkage of the 35 becomes difficult to concentrate, the block structure of the first absorbent core 210 is more effectively prevented from being broken.
  • the minimum value with respect to the basic weight of the high basic weight part 214a is preferably 20%, and more preferably 30%.
  • the upper limit is preferably 80%, more preferably 70%.
  • the lower limit of the basis weight of the high basis weight portion 214a itself is preferably 100 g / m 2 , more preferably 150 g / m 2 .
  • the upper limit is preferably 600 g / m 2 , more preferably 500 g / m 2 .
  • the lower limit value of the basis weight is preferably 20 g / m 2 , and more preferably 50 g / m 2 .
  • the upper limit is preferably 400 g / m 2 , more preferably 350 g / m 2 .
  • the method for measuring the basis weight is as described above.
  • the high basis weight portion 214a is not only larger in basis weight than the low basis weight portion 214b but also thicker.
  • the lower limit of the thickness of the low basis weight portion 214b is preferably 20% and more preferably 30% with respect to the thickness of the high basis weight portion 214a.
  • the upper limit is preferably 80%, more preferably 70%.
  • the lower limit of the thickness of the high basis weight portion 214a itself is preferably 1.0 mm, and more preferably 1.5 mm.
  • the upper limit is preferably 6 mm, more preferably 5 mm.
  • the lower limit of the thickness is preferably 0.5 mm, and more preferably 1.0 mm.
  • the upper limit is preferably 4 mm, more preferably 3.5 mm.
  • the method for measuring the thickness is as described above.
  • the block region is arranged from the abdominal side A to the back side B of the first absorbent core 210.
  • the block region includes a ventral portion high basis weight portion group 217A provided at a position corresponding to the ventral portion A, and a dorsal portion high basis weight portion group 217B provided at a position corresponding to the dorsal portion B. And a crotch part high basis weight part group 217C provided at a position corresponding to the crotch part C.
  • Each high basic weight part group is connected. In each high basic weight part group, the number of the high basic weight parts 214a arrange
  • the number of high basis weight portions 214a in the abdominal portion high basis weight portion group 217A and the back side high basis weight portion group 217B is the number of the high basis weight portions 214a in the crotch high basis weight portion group 217C. More than the number of arrangements. For example, as shown to Fig.6 (a), in the ventral part high basic weight part group 217A, the number of the high basic weight parts 214a arrange
  • the dimension of the high basic weight part 214a is the same in each high basic weight part group, the high basic weight part in the abdominal part high basic weight part group 217A and the back side high basic weight part group 217B.
  • the number of the arrangement of 214a is larger than the number of the arrangement of the high basis weight portion 214a in the crotch lower high basis weight portion group 217C, that is, the ventral side portion A and the back side than the width of the block region in the crotch portion C.
  • the width of the block area in part B is larger.
  • a vertically long central opening 215a is formed at a position on the longitudinal center line CL of the first absorbent core 210 along the longitudinal center line CL.
  • the central opening 215 a penetrates the entire thickness direction of the first absorbent core 210.
  • the central opening 215a is formed at a position where the crotch lower high basis weight portion group 217C is formed.
  • the central opening 215a is not formed at the positions of the ventral portion high basis weight portion group 217A and the dorsal side high basis weight portion group 217B.
  • a pair of high basis weight portions 214a forming a part of the crotch lower high basis weight portion group 217C are located on both sides in the width direction of the central opening 215a.
  • the length and width of the central opening 215a are substantially the same as the length and width of the central opening 225 formed in the second absorbent core 220 described above.
  • the non-blocking region 216 is disposed outside the block region in the first absorbent core 210 in the longitudinal direction and the width direction. That is, the 1st absorptive core 210 is comprised from the block area
  • the non-block region 216 surrounds the entire block region. The block area and the non-block area 216 are partitioned by a low basis weight portion 214b located on the outermost periphery of the block area. In the non-blocking region 216, the thickness and basis weight at any position are constant.
  • the thickness of the non-block region 216 is substantially the same as the thickness of the high basis weight portion 214a of the block region.
  • the relationship between the thickness of the non-blocking region 216 and the thickness of the high basis weight portion 214a is not limited to this, and the thickness of the non-blocking region 216 may be larger, and conversely the thickness of the high basis weight portion 214a. May be large.
  • the lower limit of the thickness of the non-blocking region 216 is preferably 1.5 mm, and more preferably 2.0 mm.
  • the upper limit is preferably 4.0 mm, and more preferably 3.5 mm.
  • the method for measuring the thickness is as described above.
  • the basis weight of the non-block region 216 may be the same as or different from the basis weight of the high basis weight portion 214a of the block region. Further, the basis weight of the low basis weight portion 214b of the block region may be the same or different. Specifically, the lower limit of the basis weight of the non-block region 216 is preferably 100 g / m 2 , and more preferably 150 g / m 2 . The upper limit is preferably 600 g / m 2 , more preferably 500 g / m 2 . The method for measuring the basis weight is as described above.
  • the high basis weight portion 214a and the low basis weight portion 214b in the block area are integrally formed. Moreover, the block area
  • a side opening 215b extending in the longitudinal direction of the first absorbent core 210 is formed in the non-block region 216a located outside the block region in the width direction.
  • the side opening 215b is formed for the purpose of allowing the first absorbent core 210 to easily follow the width of the crotch part by largely bending the crotch part region of the first absorbent core 210.
  • the side opening 215 b penetrates the entire thickness direction of the first absorbent core 210.
  • the side opening 215b is formed on the outer side in the width direction of the formation position of the crotch lower high basis weight portion group 217C described above.
  • a pair of side openings 215b are formed at positions symmetrical with respect to the longitudinal center line CL.
  • the side opening 215b is symmetrical with respect to the longitudinal center line CL.
  • the side opening 215b has a flat and substantially trapezoidal shape that extends linearly in the longitudinal direction and has an inner side 218a and an outer side 218b that are parallel to each other.
  • the inner side 218a is shorter than the outer side 218b.
  • the distance between the pair of inner sides 218a is larger than the distance between the pair of first linear portions 222a in the second absorbent core 220 described above.
  • the side opening 215b has the same length as the central opening 215a or is longer than that. Further, the side opening 215b has the same width as that of the central opening 215a or wider than that.
  • the crotch lower high basis weight of the first absorbent core 210 In the state where the second absorbent core 220 described above is disposed on the first absorbent core 210 having the above-described configuration, as shown in FIG. 4, the crotch lower high basis weight of the first absorbent core 210.
  • the formation positions of the part group 217C and the crotch lower high basis weight part group 227C of the second absorbent core 220 are matched.
  • the formation positions of the abdominal side high basis weight part group 217A of the first absorbent core 210 and the abdominal side high basis weight part group 227A of the second absorbent core 220 are also matched.
  • the positions of the central opening 215a formed in the first absorbent core 210 and the central opening 225 in which the second absorbent core 220 is formed coincide with each other so that the absorbent core 22 extends over the entire thickness direction.
  • An opening that penetrates is formed.
  • the excreted liquid is more easily diffused in both the longitudinal direction and the width direction of the absorbent core 22 by a synergistic effect with the block region formed around the opening. .
  • a 1st absorptive core in the position of the width direction outer side of the crotch high basic weight part group 227C in the 2nd absorptive core 220, a 1st absorptive core.
  • a pair of side openings 215b formed in 2210 are exposed.
  • the first absorbent core 210 and the second absorbent core 220 are both made of a liquid absorbent material.
  • the liquid-absorbing material the same materials as those conventionally used in the technical field of absorbent articles can be used.
  • a highly absorbent polymer made of defibrated pulp or a hydrogel material can be used.
  • the composition of the liquid absorbent material in the first absorbent core 210 and the second absorbent core 220 may be the same or different.
  • the first absorbent core 210 and the second absorbent core 220 may each be coated with a liquid permeable sheet made of tissue paper, nonwoven fabric, or the like, or the first absorbent core 210 and the second absorbent core 220 The laminate may be covered with the liquid permeable sheet.
  • the first absorbent core 210 is located at the position of the crotch non-stretchable region C ⁇ b> 3 formed in the exterior body 30.
  • a block region including the crotch lower high basis weight portion group 217 ⁇ / b> C formed in is arranged.
  • a block region including the region and the back side high basis weight portion group 217B is arranged.
  • the elastic member is not arrange
  • the fixed end portion closer to the inner side in the width direction is the first absorption at the position of the crotch lower stretchable regions C ⁇ b> 1 and C ⁇ b> 2 formed in the exterior body 30. It is located in the non-blocking region 216a of the conductive core 210. Specifically, the fixed end portion inward in the width direction of the leg elastic member 34 is particularly located in the side opening 215 b formed in the non-blocking region 216 a of the first absorbent core 210.
  • the fixed end near the inside in the width direction. Is located in the non-blocking region 216a of the first absorbent core 210. That is, the fixed end portions of the elastic members 34, 35 inward in the width direction do not reach the block region of the first absorbent core 210.
  • the side opening 215b in the non-blocking region 216a of the first absorbent core 210 becomes a bent portion at the crotch portion, whereby the first absorbent core 210 is deformed into a convex shape on the non-skin contact surface side.
  • the contraction force of the leg elastic member 34 can be received at the top of the convex portion of the first absorbent core 210 deformed into a convex shape.
  • the block region having a concave shape with respect to the non-skin contact surface side can be hardly affected by the contraction force of the leg elastic member 34. This makes it difficult to inhibit the liquid diffusive effect of the absorbent core 22 while providing sufficient fit around the trunk.
  • the fixed end part near the width direction inner side may be located in parts other than the side part opening part 215b in the non-blocking area
  • FIG. By positioning the fixed end portion of the leg elastic member 34 at a portion other than the side opening 215b of the non-blocking region 216a, the contraction force of the leg elastic member 34 can be applied to the relatively robust portion of the absorbent core 210. Therefore, even when the absorbent core 210 is in a wet state, the absorbent core 210 is not easily broken and can be sufficiently attracted to the body.
  • the waistline non-stretchable region D3 of the abdominal side A and the back side B is located in the vicinity of the front end portion or the rear end portion in the longitudinal direction of the absorbent core 22.
  • the waistline non-stretchable region D3 preferably extends beyond the longitudinal front end or the rear end of the absorbent core 22 to the ventral waist flap 40A and the back waist flap 40B. It is advantageous.
  • the block region of the first absorbent core 210 may be disposed in the crotch non-stretchable region C3 and the waistline non-stretchable region D3.
  • the block area may not be arranged in the crotch non-stretchable area C3 and the waistline non-stretchable area D3.
  • the block region is arranged in the crotch lower part non-stretchable region C3 and the waistline non-stretchable region D3. To preferred.
  • the block region of the first absorbent core 210 is arranged in both the crotch non-stretchable region C3 and the waistline non-stretchable region D3. In any one of the crotch non-stretchable region C3 and the waistline non-stretchable region D3, the block region of the first absorbent core 210 may be disposed.
  • the block region of the first absorbent core 210 is arranged in both the ventral side portion A and the waistline non-stretchable region D3 of the back side portion B, but instead, the ventral side portion A and In any one of the waistline non-stretchable regions D3 of the back side portion B, the block region of the first absorbent core 210 may be disposed.
  • FIG. 7 shows an embodiment of a method for manufacturing the first absorbent core 210 and the second absorbent core 220 and a manufacturing apparatus used therefor.
  • both absorptive cores may be collectively referred to simply as “absorbent cores”.
  • the absorptive core as a general term of both absorptive cores is shown with the code
  • the manufacturing apparatus for the absorbent core 41 includes a rotating drum 50 that is rotationally driven in the direction of the arrow R ⁇ b> 1, and a duct 60 that supplies the outer peripheral surface of the rotating drum 50 with an absorbent material 45 that includes an absorbent polymer that is a raw material of the absorbent core 41.
  • a transfer roll 70 that is disposed obliquely below and downstream of the rotary drum 50 and is driven to rotate in the direction of arrow R2, and a vacuum box that is disposed between the duct 60 and the transfer roll 70 in the circumferential direction of the rotary drum 50.
  • the rotating drum 50 has a cylindrical shape as shown in FIG. 7 and receives power from a motor such as a motor, and the members forming the outer peripheral surface rotate around a horizontal axis.
  • a space 56 capable of depressurizing the inside is formed in a non-rotating portion inside the rotating drum 50 (on the rotating shaft side).
  • a known exhaust device such as an intake fan is connected to the space 56, and the interior of the space 56 can be maintained at a negative pressure by operating the exhaust device.
  • piping capable of taking in air outside the apparatus is connected to the spaces 57 and 58 on the inner side (rotating shaft side) of the rotating drum 50.
  • a plurality of drum recesses 51 having a shape corresponding to the shape of the absorbent core 41 to be manufactured are formed on the outer peripheral surface of the rotary drum 50 at equal intervals in the R1 direction.
  • a mesh plate 52 in which a large number of pores are formed and a metal or resin impermeable member 53 are disposed on the bottom surface of each drum recess 51.
  • the air-impermeable member 53 is provided so as to protrude on the mesh plate 52, and is arranged so as to correspond to the shape and position of the low basis weight portions 214b and 224b described above. As shown in FIG.
  • the part of the outer peripheral surface of the rotating drum 50 in which the drum recessed part 51 is not formed consists of the frame body of the rotating drum 50 which consists of metal rigid bodies, and is non-breathable.
  • one end side of the duct 60 covers the outer peripheral surface of the rotary drum 50 positioned on the space 56 maintained at a negative pressure, and a fiber material introduction device is provided on the other end side (not shown).
  • the fiber material introducing device includes, for example, a pulverizer that pulverizes sheet-like wood pulp into defibrated pulp and feeds the defibrated pulp (fiber material) into the duct, and introduces an absorbent polymer into the duct 60.
  • a superabsorbent polymer introduction part is provided.
  • the transfer roll 70 has a cylindrical outer peripheral portion having air permeability, and receives the power from a prime mover such as a motor and the outer peripheral portion rotates in the R2 direction.
  • a prime mover such as a motor
  • the outer peripheral portion rotates in the R2 direction.
  • a space 71 that can be depressurized is formed in the non-rotating portion on the inner side (rotating shaft side) of the transfer roll 70.
  • a known exhaust device such as an intake fan is connected to the space 71, and the interior of the space 71 can be maintained at a negative pressure by operating the exhaust device.
  • the vacuum box 65 is disposed between the downstream end 61 of the duct 60 and the transfer roll 70 in the rotation direction R1 of the rotary drum 50.
  • the vacuum box 65 has a box-like shape, and has an opening that opens in the direction of the rotating drum 50 at a portion facing the rotating drum 50.
  • the vacuum box 65 is connected to a known exhaust device (not shown) such as an intake fan via an exhaust pipe 67, and the inside of the vacuum box 65 can be maintained at a negative pressure by the operation of the exhaust device. .
  • the mesh belt 75 is a belt-shaped breathable belt having a mesh connected endlessly, and is continuously guided along a plurality of free rolls and transfer rolls 70 to move along a predetermined route.
  • the mesh belt 75 is driven by the rotation of the transfer roll 70. While the mesh belt 75 passes in front of the opening of the vacuum box 65, the mesh belt 75 is in contact with the outer peripheral surface of the rotary drum 50, and the transfer roll 70 and the rotary drum 50 are closest to each other. In the vicinity of the portion, the transfer drum 70 moves away from the outer peripheral surface of the rotating drum 50.
  • the vacuum conveyor 80 includes an endless breathable belt 83 that is stretched between the drive roll 81 and the driven roll 82, and a vacuum box 84 that is disposed at a position facing the transfer roll 70 with the breathable belt 83 interposed therebetween. ing.
  • the exhaust device connected to each of the space 56 in the rotary drum 50 and the vacuum box 65 is operated to make negative pressure. This is because such a negative pressure in the space 56 causes an air flow in the duct 60 to convey the liquid absorbent material 45 to the outer peripheral surface of the rotary drum 50.
  • the rotating drum 50 and the transfer roll 70 are rotated, and the vacuum conveyor 80 is operated.
  • the fiber material introduction device is operated to supply the fiber material into the duct 60 and further supply the superabsorbent polymer
  • the liquid absorbent material 45 rides on the air flow flowing through the duct 60 and scatters. The state is supplied toward the outer peripheral surface of the rotating drum 50.
  • the liquid absorbent material (mixture of fiber material and superabsorbent polymer) 45 is sucked into the drum recess 51 of the rotary drum 50.
  • the liquid absorbing material 45 is gradually deposited on the mesh plate 52 in each region 54 and region 55 of the drum recess 51.
  • a portion (a portion corresponding to the non-breathable member 53) 46 a formed by depositing the liquid-absorbing material 45 on the non-breathable member 53 is relatively deposited of the liquid-absorbent material 45.
  • the amount of the liquid absorbing material 45 is relatively large in the other portions (corresponding to the region 54) 46b and the portion (corresponding to the region 55) 46c, and the deposit 46 as a whole has an uneven structure. To have.
  • the deposit 46 in the drum concave portion 51 is sucked to the mesh belt 75 by the suction from the vacuum box 65. It becomes.
  • the deposit 46 in the drum recess 51 is conveyed to a position immediately before the closest portion between the transfer roll 70 and the rotary drum 50, and is sucked from the transfer roll 70 side in the vicinity of the closest portion to the mesh belt.
  • the mold is released from the drum recess 51 while being sucked by 75 and moved onto the transfer roll 70.
  • the deposit 46 having the concavo-convex structure transferred onto the transfer roll 70 together with the mesh belt 75 is adsorbed to the mesh belt 75 on the transfer roll 70 and is transferred to the vacuum conveyor 80 (the lowermost end of the transfer roll 70). And is transferred to the vacuum conveyor 80 by suction by the vacuum box 84 at the delivery section.
  • a covering material 42 made of tissue paper or a hydrophilic nonwoven fabric is introduced onto a vacuum conveyor 80 before the deposit 46 is placed. Then, the deposit 46 moves on the covering material 42. Further, after the covering material 42 is folded by a folded plate (not shown) and the deposit 46 is wrapped with the covering material 42, the deposit 46 in the state wrapped with the covering material 42 is cut at a predetermined interval. Thus, the absorber precursor 49 cut to the size of one absorber is continuously manufactured.
  • the absorber precursor 49 obtained in this way is compressed by the pressurizing means 90, and the thickness of the deposit 46 which comprises the absorber precursor 49 is actively reduced.
  • the intended absorber (absorbent core 41) is obtained.
  • the pressurizing means 90 includes a pair of rolls 91, 92 having at least one smooth surface, and pressurizes an object to be pressed introduced between the rolls 91, 92 from the upper and lower surfaces. It is configured to be compressible in the direction.
  • the portion (region 54 corresponding portion) 46b and the portion (region 55 corresponding portion) 46c having a relatively large liquid absorbing material and a large thickness are disposed in the liquid absorbing material 45. Is compressed more strongly than a relatively thin portion (a portion corresponding to the breathable member 53) 46a.
  • the portion (region 54 corresponding portion) 46b (convex portion) and the portion (region 55 corresponding portion) 46c of the deposit 46 are the absorbent core 41.
  • the low basis weight portions 214b and 224b have a low density.
  • FIG. 10 shows a disposable diaper according to another embodiment of the present invention.
  • FIG. 11 is an exploded perspective view of the diaper shown in FIG.
  • the diapers shown in these drawings are so-called unfolded disposable diapers.
  • the description explained in full detail regarding the diaper 10 of previous embodiment is applied suitably.
  • 10 and 11 the same members as those in FIGS. 1 to 9 are denoted by the same reference numerals.
  • the diaper 100 includes a top sheet 21 disposed on the wearer's skin contact surface side, a back sheet 23 disposed on the non-skin contact surface side, and a vertically long absorption disposed between the two sheets 21 and 23. And a sex core 22.
  • the diaper 100 has a longitudinal direction Y and a width direction X orthogonal thereto. And it forms symmetrically with respect to the longitudinal center line CL extending in the longitudinal direction.
  • the diaper 100 includes a crotch portion C and a crotch portion C, which are located in the central region in the longitudinal direction, and a ventral side portion A and a back side portion B that extend forward and backward in the longitudinal direction.
  • the left and right side edges of the abdominal side A and the left and right side edges of the back side part B extend outward in the width direction from the left and right side edges of the crotch C.
  • the left and right side edges of the crotch C are curved in an arc shape inward in the width direction, and have a shape in which the central region in the longitudinal direction is constricted inward as a whole.
  • the top sheet 21 and the back sheet 23 respectively extend outward from the left and right side edges and the front and rear end edges of the absorbent core 22.
  • Each of the top sheet 21 and the back sheet 23 is joined to each other directly or through another member at an extending portion extending outward from the periphery of the absorbent core 22 so as to sandwich the absorbent core 22. ⁇ It is fixed.
  • the diaper 100 is provided with a pair of fastening tapes F, F on the left and right edges of the back side B.
  • a three-dimensional gather forming sheet 162 having an elastic member 161 fixed in a stretched state in the longitudinal direction is disposed and fixed to the side portion of the top sheet 21 at both side portions along the longitudinal direction of the diaper 100. Accordingly, a pair of three-dimensional gathers extending in the longitudinal direction of the diaper 100 is formed on the skin contact surface side of the diaper 100.
  • a plurality of leg elastic members 163 for forming leg gathers are arranged in a stretched state in the longitudinal direction at portions substantially corresponding to the crotch portion C on both side portions along the longitudinal direction of the diaper 100. The leg elastic member 163 is sandwiched and fixed between the three-dimensional gather forming sheet 162 and the back sheet 23.
  • Leg gathers are formed in the crotch part C of the diaper 100 by the leg elastic member 163 contracting. Furthermore, the elastic sheet 164 for waist gather formation is arrange
  • the elastic sheet 164 is configured by sandwiching and fixing a plurality of elastic members 165a and 165b extending in the width direction of the diaper 100 between two sheet members 164a and 164b.
  • the elastic member 165b which is an elastic member positioned near the waist opening edge W, is located from a position near one side edge in the width direction of the diaper 100. , And is continuously arranged over a position near the other side edge.
  • the elastic member 165a which is an elastic member located closer to the absorbent core than the elastic member 165b, is disposed only on the left and right sides in the width direction of the diaper 100, and the elastic member 165a is located in the center region in the width direction. Is not arranged.
  • the elastic member 165a has one end near the side edge in the width direction of the diaper 100.
  • the other end is terminated before reaching the central region in the width direction of the diaper 100. Therefore, when the region in which the elastic member 165a is disposed is viewed along the width direction, the two elastic regions 165a formed by fixing the elastic member 165a extending in the width direction in an expanded state, that is, the back side elastic region E1, E2 and a non-stretchable region where the elastic member located between them is not arranged, that is, a back side non-stretchable region E3 is formed.
  • the dorsal side non-stretchable region E3 is a portion of the elastic member 165a located on the inner side in the width direction of the stretchable region, and the elastic member 165a located in the left and right non-blocking regions of the absorbent core 22. It is arranged between the fixed parts. As described above, the back side stretchable region E1, the back side non-stretchable region E3, and the back side stretchable region E2 are formed in this order along the width direction.
  • the absorptive core 22 has a vertically long shape extending in the same direction as the longitudinal direction of the diaper 1 in a plan view, and is symmetric with respect to the longitudinal center line CL.
  • the absorptive core 22 is distribute
  • the left and right side edges of the absorbent core 22 are curved inward in the width direction at a central region in the longitudinal direction, that is, at a portion corresponding to the crotch part C in the diaper 100.
  • FIG. 12 shows a cross-sectional view of the absorbent core 22 shown in FIG.
  • the absorbent core 22 has a first surface 223a and a second surface 223b.
  • the 1st surface 223a is a skin contact surface, and has faced the surface sheet 21 or the intermediate sheet (not shown) side used as needed.
  • the second surface 223b is the non-skin contact surface side and faces the back sheet 23 side.
  • the absorbent core 22 has a relatively high basis weight and is adjacent to the high basis weight portion 234a and the high basis weight portion 234a having a convex shape protruding toward the non-skin contact surface side, and relatively relatively It has a low basis weight portion 234b that is low in amount and recessed toward the skin contact surface side.
  • the high basis weight part 234a and the low basis weight part 234b are integrally formed.
  • the non-skin contact surface side of the absorbent core 22 has an uneven structure, and the skin contact surface side is flat.
  • a plurality of low basis weight portions 234 b extend in parallel with the longitudinal direction of the absorbent core 22.
  • a plurality of the low basis weight parts 234 b also extend in the width direction of the absorbent core 22.
  • the low basis weight portion 234b has an orthogonal lattice shape extending in the longitudinal direction and the width direction of the absorbent core 22.
  • the high basic weight part 234a is located in the grating
  • the shapes of the respective high basis weight portions 234a are substantially the same, are rectangular in plan view, and the length in the longitudinal direction is larger than the length in the width direction.
  • the low basic weight part 234b extends in the longitudinal direction and the width direction of the absorbent core 22 and is connected to each other to form a continuous body.
  • the width of the low basis weight portion 234b extending in the longitudinal direction of the absorbent core 22 and the width of the low basis weight portion 234b extending in the width direction of the absorbent core 22 may be the same or different.
  • the absorbent core 22 has a block structure including a plurality of high basis weight portions 234a having a relatively high basis weight and low basis weight portions 234b having a relatively low basis weight, and
  • the periphery of each high basic weight part 234a is provided with the block area
  • the corners of the low basis weight portion 234b located on the outermost periphery of the block structure are preferably rounded to draw a convex curve toward the outside.
  • the minimum value with respect to the basic weight of the high basic weight part 234a is preferably 20%, and more preferably 30%.
  • the upper limit is preferably 80%, more preferably 70%.
  • the lower limit of the basis weight of the high basis weight portion 234a itself is preferably 300 g / m 2 , and more preferably 350 g / m 2 .
  • the upper limit is preferably 900 g / m 2 , more preferably 800 g / m 2 .
  • the lower limit value of the basis weight is preferably 100 g / m 2 , and more preferably 150 g / m 2 .
  • the upper limit is preferably 500 g / m 2 , more preferably 400 g / m 2 .
  • the method for measuring the basis weight is as described above.
  • the high basis weight part 234a not only has a larger basis weight than the low basis weight part 234b, but also has a larger thickness.
  • the lower limit of the thickness of the low basis weight portion 234b is preferably 30%, and more preferably 40%, relative to the thickness of the high basis weight portion 234a.
  • the upper limit is preferably 90%, more preferably 80%.
  • the lower limit of the thickness of the high basis weight portion 234a itself is preferably 2 mm, and more preferably 3 mm.
  • the upper limit is preferably 8 mm, more preferably 7 mm.
  • the lower limit of the thickness is preferably 1.5 mm, and more preferably 2.5 mm.
  • the upper limit is preferably 4.5 mm, and more preferably 4.0 mm.
  • the method for measuring the thickness is as described above.
  • the block region is arranged from the abdominal side A to the back side B of the absorbent core 22.
  • the block area includes abdominal side high basis weight portion group 237A provided at a position corresponding to the ventral side portion A, and a back side high basis weight portion group 237B provided at a position corresponding to the back side portion B. And crotch part high basis weight part group 237C provided in a position corresponding to crotch part C.
  • Each high basic weight part group is connected. In each high basic weight part group, the number of the high basic weight parts 234a arrange
  • the number of high basis weight portions 234a in the abdominal portion high basis weight portion group 237A and the back side high basis weight portion group 237B is the number of the high basis weight portions 234a in the crotch high basis weight portion group 237C. More than the number of arrangements. For example, as shown in FIG. 10, in the abdominal side high basis weight part group 237A and the back side high basis weight part group 237B, the number of the high basis weight parts 234a arranged along the width direction is five. On the other hand, in the crotch high basis weight part group 237C, the number of the high basis weight parts 234a arranged along the width direction is three.
  • the dimension of the high basic weight part 234a is the same in each high basic weight part group, the high basic weight part in the abdominal part high basic weight part group 237A and the back side high basic weight part group 237C. That the number of the arrangement of 234a is larger than the number of the arrangement of the high basis weight part 234a in the crotch lower high basis weight part group 237B, that is, the ventral side part A and the back side rather than the width of the block area in the crotch part C. This means that the width of the block area in part B is larger.
  • the non-blocking region 236 is arranged on the outer side in the longitudinal direction and the outer side in the width direction of the block region in the absorbent core 22. That is, the absorptive core 22 is composed of a block region composed of a high basis weight portion 234a and a low basis weight portion 234b and a non-block region 236.
  • the non-block region 236 surrounds the entire periphery of the block region.
  • the block area and the non-block area 236 are partitioned by a low basis weight portion 234b located on the outermost periphery of the block area.
  • the thickness and basis weight at any position are constant.
  • the thickness of the non-blocking region 236 is substantially the same as the thickness of the high basis weight portion 234a of the block region.
  • the relationship between the thickness of the non-blocking region 236 and the thickness of the high basis weight portion 234a is not limited to this, and the thickness of the non-blocking region 236 may be larger, and conversely the thickness of the high basis weight portion 234a. May be large.
  • the lower limit of the thickness of the non-blocking region 236 is preferably 3 mm, and more preferably 4 mm.
  • the upper limit is preferably 8 mm, more preferably 7 mm.
  • the method for measuring the thickness is as described above.
  • the basis weight of the non-block region 236 may be the same as or different from the basis weight of the high basis weight portion 234a of the block region. Further, the basis weight of the low basis weight portion 234b of the block region may be the same or different. Specifically, the lower limit of the basis weight of the non-block region 236 is preferably 300 g / m 2 , and more preferably 350 g / m 2 . The upper limit is preferably 900 g / m 2 , more preferably 800 g / m 2 . The method for measuring the basis weight is as described above.
  • the high basis weight part 234a and the low basis weight part 234b of the block region are integrally formed. Moreover, the block area
  • a block region including the back-side high basis weight portion group 237 ⁇ / b> B formed in the absorbent core 22 is disposed at the position of the back-side non-stretchable region E ⁇ b> 3 in the diaper 100. Further, no elastic member is disposed at the formation position of the abdominal portion high basis weight portion group 237A and the crotch lower high basis weight portion group 237C. Thus, in the diaper 100, no elastic member is disposed in the block region, and the block region is in a non-stretchable state.
  • the fixed end portion inward in the width direction is the non-blocking of the absorbent core 22 among the fixed end portions of the elastic member 165a. Located in region 236. That is, the fixed end of the elastic member 165a inward in the width direction does not reach the block region of the absorbent core 22.
  • the contraction force of the elastic member 165a can be applied to a relatively robust portion of the absorbent core 22, so that the absorbent core 22 is wet. It becomes hard to break even in the down state. Therefore, even if the absorbent core 22 is wet, the absorbent core 22 can be sufficiently attracted to the body. As a result, the effect of liquid diffusibility of the absorbent core 22 is less likely to be hindered, while providing sufficient fit by waist gathers.
  • the dorsal side non-stretchable region E ⁇ b> 3 is located in the vicinity of the front end portion or the rear end portion in the longitudinal direction of the absorbent core 22.
  • the back side non-stretchable region E3 extends to the back side waist flap 40B beyond the front end or rear end in the longitudinal direction of the absorbent core 22.
  • the non-block regions 216, 226, and 236 surround the entire periphery of the block region.
  • the non-block region is outside the block region in the longitudinal direction or the width direction. It suffices if it is located in either.
  • FIGS. 13A to 13C show another embodiment of the absorbent core 22 used in the diaper 100 of the present embodiment.
  • Absorbent cores 22A, 22B, and 22C shown in FIGS. 13A to 13C have a relatively high basis weight and protrude toward the non-skin contact surface side, similarly to absorbent core 22 shown in FIG.
  • a block structure comprising a high basis weight portion 234a having a convex shape and a low basis weight portion 234b adjacent to the high basis weight portion 234a and having a relatively low basis weight and recessed toward the skin contact surface side. have.
  • the high basis weight part 234a and the low basis weight part 234b are integrally formed.
  • the non-skin contact surface side of the absorbent core 22 has an uneven structure, and the skin contact surface side is flat.
  • the non-blocking region 236 is arranged on the outer side in the longitudinal direction and the outer side in the width direction of the block region in the absorbent cores 22A, 22B, and 22C. That is, the absorbent cores 22 ⁇ / b> A, 22 ⁇ / b> B, and 22 ⁇ / b> C are configured by a block region including the high basis weight portion 234 a and the low basis weight portion 234 b and the non-block region 236.
  • the non-block region 236 surrounds the entire periphery of the block region.
  • the block region in the absorbent cores 22A, 22B, and 22C is arranged from the ventral side A to the back side B.
  • the block area includes abdominal side high basis weight portion group 237A provided at a position corresponding to the ventral side portion A, and a back side high basis weight portion group 237B provided at a position corresponding to the back side portion B.
  • crotch part high basis weight part group 237C provided in a position corresponding to crotch part C.
  • Each high basic weight part group is connected.
  • the number of high basis weight parts 234a in the ventral side high basis weight part group 237A and the back side high basis weight part group 237B is more than the number of high basis weight parts 234a in the crotch high basis weight part group 237C.
  • the number of high basis weight portions 234a arranged along the width direction is four.
  • the number of the high basis weight portions 234a arranged along the width direction is three.
  • the number of high basis weight parts 234a arranged along the width direction is five.
  • the number of high basis weight portions 234a arranged along the width direction is three.
  • the number of high basis weight parts 234a arranged along the width direction is six.
  • the number of high basis weight portions 234a arranged along the width direction is two.
  • An absorbent article comprising a top sheet, a back sheet, and an absorbent body disposed between the top sheet and the back sheet, the absorbent article having a longitudinal direction and a width direction perpendicular thereto,
  • the absorbent body has an absorbent core containing an absorbent polymer;
  • the absorbent article has two stretchable regions in which elastic members extending in the width direction are fixedly arranged in a stretched state, and a non-stretchable region located between the two stretchable regions along the width direction.
  • the absorbent core has a block region and a non-block region located outside the block region in the longitudinal direction or the width direction,
  • the block region is composed of a high basis weight portion having a relatively high basis weight and a low basis weight portion having a relatively low basis weight, and the periphery of each high basis weight portion is covered by the low basis weight portion over the entire area.
  • the high basis weight part is surrounded by a plurality of independent block structures, the high basis weight part is regularly arranged, and the block region is arranged in the non-stretchable region, An absorbent article in which a fixed end of the elastic member is located in the non-blocking region.
  • An absorbent article comprising a top sheet, a back sheet, and an absorbent body disposed between the top sheet and the back sheet, the absorbent article having a longitudinal direction and a width direction perpendicular thereto,
  • the absorber has an absorbent core that includes a superabsorbent polymer;
  • the absorbent article has two stretchable regions in which elastic members extending in the width direction are fixedly arranged in a stretched state, and a non-stretchable region located between the two stretchable regions along the width direction.
  • the absorbent core has a block region and a non-block region located outside the block region in the longitudinal direction or the width direction,
  • the block area is formed by integrally molding a high basis weight portion having a relatively high basis weight and a low basis weight portion having a relatively low basis weight, and the periphery of each high basis weight portion is spread over the entire area.
  • the high basis weight part has a plurality of individually independent block structures surrounded by a low basis weight part, and the outermost periphery of the block structure is surrounded by the low basis weight part,
  • the high basis weight part is regularly arranged, and the block region is arranged in the non-stretchable region, An absorbent article in which a fixed end of the elastic member is located in the non-blocking region.
  • the absorbent article has a crotch portion located in a central region in the longitudinal direction and a ventral side portion and a dorsal side portion extending from the crotch portion in the longitudinal direction forward and backward, respectively, The block region is arranged from the ventral side to the dorsal side;
  • the absorbent article has a ventral waist flap and a back waist flap that extend forward and backward from the longitudinal front and rear end portions of the absorbent core and extend in the width direction, respectively.
  • a waistline elastic member is arranged on the abdomen side or the backside, and two waistline stretchable regions, and a waistline non-stretchable region located between them are formed,
  • the waistline non-stretchable region is positioned in the vicinity of the front end portion or the rear end portion in the longitudinal direction of the absorbent core and beyond the front end portion or the rear end portion in the longitudinal direction of the absorbent core,
  • the absorbent article according to any one of ⁇ 1> to ⁇ 3>, which extends to the back waist flap.
  • the non-stretchable region is a portion of the waistline elastic member that is located on the inner side in the width direction of the waistline stretchable region, and the waistline elastic member that is located in the non-blocking region of the absorbent core is fixed.
  • the absorbent article as described in ⁇ 4> containing a part.
  • ⁇ 6> The absorbent article according to any one of ⁇ 1> to ⁇ 5>, wherein the non-blocking region surrounds the entire periphery of the blocking region.
  • a side opening that extends in the longitudinal direction is formed in the non-block region located outside the width direction of the block region,
  • the leg elastic member as the elastic member is disposed along the left and right peripheral edges of the crotch part, and is disposed inward in the width direction from the peripheral edge,
  • the absorptivity according to any one of ⁇ 1> to ⁇ 8>, wherein a fixed end portion of the leg elastic member arranged from the peripheral edge toward the inner side in the width direction is located in the side opening. Goods.
  • An absorbent main body including the top sheet, the back sheet and the absorbent core, and an exterior body disposed on the back sheet side of the absorbent main body,
  • the absorbent article according to any one of ⁇ 1> to ⁇ 9>, wherein the elastic member is disposed on the exterior body.
  • the said absorptive core is comprised from the 1st absorptive core and the 2nd absorptive core, a 1st absorptive core is arrange
  • the second absorbent core has the high basis weight part and the low basis weight part,
  • ⁇ 12> The absorbent article as described in ⁇ 11> whose said lower limit is 30%.
  • ⁇ 13> The absorbent article according to ⁇ 11> or ⁇ 12>, wherein the basis weight of the low basis weight part is 80% with respect to the basis weight of the high basis weight part.
  • ⁇ 14> The absorbent article as described in ⁇ 13> whose said upper limit is 70%.
  • ⁇ 15> The absorbent article according to any one of from the lower limit of the basis weight of the high basis weight portion is 150 g / m 2 ⁇ 11> not ⁇ 14>.
  • ⁇ 16> The absorbent article as described in ⁇ 15> whose said lower limit is 250 g / m ⁇ 2 >.
  • ⁇ 17> The absorbent article according to any one of ⁇ 11> to ⁇ 16>, wherein an upper limit value of the basis weight of the high basis weight part is 800 g / m 2 .
  • ⁇ 18> The absorbent article as described in ⁇ 17> whose said upper limit is 700 g / m ⁇ 2 >.
  • ⁇ 19> The absorbent article according to any one of ⁇ 11> to ⁇ 18>, wherein a lower limit value of the basis weight of the low basis weight part is 50 g / m 2 .
  • ⁇ 20> The absorbent article as described in ⁇ 19> whose said lower limit is 100 g / m ⁇ 2 >.
  • ⁇ 21> The absorbent article according to any one of ⁇ 11> to ⁇ 20>, wherein an upper limit value of the basis weight of the low basis weight part is 500 g / m 2 .
  • the thickness of the said low basic weight part is an absorbent article as described in any one of ⁇ 11> thru
  • ⁇ 24> The absorbent article as described in ⁇ 23> whose said lower limit is 40%.
  • the thickness of the said low basic weight part is an absorbent article as described in any one of ⁇ 11> thru
  • ⁇ 26> The absorbent article as described in ⁇ 25> whose said upper limit is 80%.
  • or ⁇ 26> an absorbent article whose lower limit is 1.5 mm in the thickness of the said high basic weight part.
  • ⁇ 28> The absorbent article as described in ⁇ 27> whose said lower limit is 2.5 mm.
  • the thickness of the high basis weight part is the absorbent article according to any one of ⁇ 11> to ⁇ 28>, whose upper limit is 8 mm.
  • ⁇ 30> The absorbent article as described in ⁇ 29> whose said upper limit is 6 mm.
  • the thickness of the said low basic weight part is an absorbent article as described in any one of ⁇ 11> thru
  • ⁇ 32> The absorbent article as described in ⁇ 31> whose said lower limit is 1 mm.
  • ⁇ 33> The thickness of the said low basic weight part is an absorbent article as described in any one of ⁇ 11> thru
  • ⁇ 34> The absorbent article as described in ⁇ 33> whose said upper limit is 4 mm.
  • ⁇ 35> The absorbent article according to any one of ⁇ 11> to ⁇ 34>, wherein the second absorbent core has the non-blocking region, and the lower limit of the thickness of the non-blocking region is 2 mm.
  • ⁇ 36> The absorbent article as described in ⁇ 35> whose said lower limit is 3 mm.
  • ⁇ 37> The absorbent article according to any one of ⁇ 11> to ⁇ 36>, wherein the second absorbent core has the non-blocking region, and the upper limit of the thickness of the non-blocking region is 6 mm.
  • ⁇ 38> The absorbent article as described in ⁇ 37> whose said upper limit is 5 mm.
  • ⁇ 39> The absorbent article according to any one of ⁇ 11> to ⁇ 38>, wherein the second absorbent core has the non-blocking region, and the basis weight of the non-blocking region has a lower limit value of 150 g / m 2. .
  • ⁇ 40> The absorbent article according to ⁇ 39>, wherein the lower limit is 250 g / m 2 .
  • ⁇ 41> The absorbent article according to any one of ⁇ 11> to ⁇ 40>, wherein the second absorbent core has the non-blocking region, and the basis weight of the non-blocking region has an upper limit of 800 g / m 2. .
  • ⁇ 42> The absorbent article as described in ⁇ 41> whose said upper limit is 700 g / m ⁇ 2 >.
  • ⁇ 43> The absorbent article according to any one of ⁇ 1> to ⁇ 42>, which is an unfolded disposable diaper.
  • ⁇ 44> The absorbent article according to any one of ⁇ 1> to ⁇ 42>, which is a pants-type disposable diaper.

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)

Abstract

L'invention concerne une couche (10) qui, le long de la direction de la largeur, a deux régions d'étirement (C1, C2, D1, D2) comprenant des éléments élastiques (34, 35) fixés et agencés dans un état étiré, et une région non d'étirement (C3, D3) située entre les deux régions d'étirement. Un noyau absorbant (22) est configuré à partir d'une région de bloc et d'une région non de bloc (216) positionnée à l'extérieur de la région de bloc dans la direction longitudinale ou la direction de la largeur. La région de bloc comprend une partie de poids de base élevé (214a) et une partie de poids de base faible (214b). La région non de bloc (216) a une épaisseur constante et un poids de base constant. La région de bloc est agencée dans la région non d'étirement (C3, D3). Une extrémité fixe des éléments élastiques (34, 35) est positionnée dans la région non de bloc (216).
PCT/JP2013/065348 2012-06-11 2013-06-03 Article absorbant WO2013187273A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
RU2014152733/12A RU2598564C2 (ru) 2012-06-11 2013-06-03 Впитывающее изделие
CN201380029609.5A CN104334141B (zh) 2012-06-11 2013-06-03 吸收性物品

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2012-131860 2012-06-11
JP2012131860A JP5608707B2 (ja) 2012-06-11 2012-06-11 吸収性物品

Publications (1)

Publication Number Publication Date
WO2013187273A1 true WO2013187273A1 (fr) 2013-12-19

Family

ID=49758099

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2013/065348 WO2013187273A1 (fr) 2012-06-11 2013-06-03 Article absorbant

Country Status (5)

Country Link
JP (1) JP5608707B2 (fr)
CN (1) CN104334141B (fr)
RU (1) RU2598564C2 (fr)
TW (1) TWI504387B (fr)
WO (1) WO2013187273A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108883020A (zh) * 2016-04-29 2018-11-23 宝洁公司 带有异型分布的吸收材料的吸收芯
US10231883B2 (en) 2015-01-23 2019-03-19 Kimberly-Clark Worldwide, Inc. Bridged absorbent structure
CN111182872A (zh) * 2017-12-14 2020-05-19 花王株式会社 吸收性物品
WO2020130959A1 (fr) * 2018-12-20 2020-06-25 Evyap Sabun Yag Gliserin Sanayi Ve Ticaret Anonim Sirketi Couche centrale absorbante optimisée pour produits d'hygiène
US11123240B2 (en) 2016-04-29 2021-09-21 The Procter & Gamble Company Absorbent core with transversal folding lines

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7025837B2 (ja) * 2016-11-22 2022-02-25 花王株式会社 吸収性物品
JP6327324B1 (ja) * 2016-11-24 2018-05-23 王子ホールディングス株式会社 吸収性物品
JP6375354B2 (ja) * 2016-11-29 2018-08-15 大王製紙株式会社 吸収性物品
CN111374829A (zh) * 2018-12-29 2020-07-07 尤妮佳股份有限公司 短裤型尿布

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004049707A (ja) * 2002-07-23 2004-02-19 Kao Corp 使い捨ておむつ
JP2005073921A (ja) * 2003-08-29 2005-03-24 Daio Paper Corp 吸収性物品
JP2009119154A (ja) * 2007-11-16 2009-06-04 Uni Charm Corp 吸収性物品

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1384459B1 (fr) * 2002-07-23 2007-03-28 Kao Corporation Couche-culotte jetable
EP1402864B1 (fr) * 2002-09-30 2012-05-30 Daio Paper Corporation Article absorbant les fluides corporels

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004049707A (ja) * 2002-07-23 2004-02-19 Kao Corp 使い捨ておむつ
JP2005073921A (ja) * 2003-08-29 2005-03-24 Daio Paper Corp 吸収性物品
JP2009119154A (ja) * 2007-11-16 2009-06-04 Uni Charm Corp 吸収性物品

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10231883B2 (en) 2015-01-23 2019-03-19 Kimberly-Clark Worldwide, Inc. Bridged absorbent structure
CN108883020A (zh) * 2016-04-29 2018-11-23 宝洁公司 带有异型分布的吸收材料的吸收芯
US11123240B2 (en) 2016-04-29 2021-09-21 The Procter & Gamble Company Absorbent core with transversal folding lines
CN111182872A (zh) * 2017-12-14 2020-05-19 花王株式会社 吸收性物品
WO2020130959A1 (fr) * 2018-12-20 2020-06-25 Evyap Sabun Yag Gliserin Sanayi Ve Ticaret Anonim Sirketi Couche centrale absorbante optimisée pour produits d'hygiène

Also Published As

Publication number Publication date
TW201406357A (zh) 2014-02-16
CN104334141B (zh) 2017-04-05
JP2013255558A (ja) 2013-12-26
JP5608707B2 (ja) 2014-10-15
RU2014152733A (ru) 2016-07-27
TWI504387B (zh) 2015-10-21
RU2598564C2 (ru) 2016-09-27
CN104334141A (zh) 2015-02-04

Similar Documents

Publication Publication Date Title
JP5608707B2 (ja) 吸収性物品
JP5670960B2 (ja) 吸収性物品
JP6029862B2 (ja) 吸収性物品
JP6137589B2 (ja) 吸収性物品
JP6012270B2 (ja) 吸収性物品
JP5997944B2 (ja) 吸収性物品
JP5670959B2 (ja) 吸収性物品
WO2013187260A1 (fr) Article absorbant
JP5997945B2 (ja) パンツ型吸収性物品
JP2014014667A (ja) 吸収性物品の吸収体及びそれを備えた吸収性物品。
JP5997943B2 (ja) 吸収性物品
JP6012272B2 (ja) 吸収性物品
JP6012271B2 (ja) 吸収性物品
JP6012269B2 (ja) 吸収性物品
JP5593350B2 (ja) 吸収性物品
WO2013187261A1 (fr) Article absorbant
JP7252831B2 (ja) 吸収性物品
JP6012273B2 (ja) 吸収性物品
JP5604393B2 (ja) 吸収性物品

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 13804467

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

ENP Entry into the national phase

Ref document number: 2014152733

Country of ref document: RU

Kind code of ref document: A

122 Ep: pct application non-entry in european phase

Ref document number: 13804467

Country of ref document: EP

Kind code of ref document: A1