WO2013187260A1 - 吸収性物品 - Google Patents
吸収性物品 Download PDFInfo
- Publication number
- WO2013187260A1 WO2013187260A1 PCT/JP2013/065268 JP2013065268W WO2013187260A1 WO 2013187260 A1 WO2013187260 A1 WO 2013187260A1 JP 2013065268 W JP2013065268 W JP 2013065268W WO 2013187260 A1 WO2013187260 A1 WO 2013187260A1
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- WIPO (PCT)
- Prior art keywords
- absorbent
- basis weight
- absorbent core
- sheet
- groove
- Prior art date
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Classifications
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- 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
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- 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
- A61F13/534—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 an inhomogeneous composition through the thickness of the pad
- A61F13/53409—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 an inhomogeneous composition through the thickness of the pad having a folded core
- A61F13/53436—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 an inhomogeneous composition through the thickness of the pad having a folded core having an undulated or corrugated cross-section
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- 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
- A61F13/534—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 an inhomogeneous composition through the thickness of the pad
Definitions
- the present invention relates to an absorbent article such as a disposable diaper.
- an absorbent article using a block-shaped absorbent body (absorbent core) provided with a groove-like space extending in a planar direction is known (see Patent Document 1).
- the absorbent body includes a first region having a high polymer absorber content ratio and a low hydrophilic fiber content ratio, and a polymer absorber content ratio from the first region.
- Is provided with a second region with a low content ratio of the fibrous material and a space penetrating from the second region provided on the outer sheet side to the first region provided on the inner sheet side Has a body (absorbent core). Since the absorptive article given in patent documents 1 has such an absorber, gel blocking may be prevented effectively.
- the present applicant has previously said that the absorber (absorbent core) is formed by arranging a plurality of small absorbent parts separated in plan view on the substrate sheet.
- a property article was proposed (see Patent Document 2).
- Patent Document 2 describes that the interval between the small absorption portions adjacent in the vertical direction is different from the interval between the small absorption portions adjacent in the horizontal direction.
- Patent Document 1 does not describe any relationship between the width of the space extending in the vertical direction and the width of the space extending in the horizontal direction, and the absorbent article described in Patent Document 1 has an absorption capacity of the absorber. could not be used effectively.
- the absorbent body (absorbent core) of the absorbent article described in Patent Document 2 is not formed integrally with the substrate sheet and the plurality of small absorbent parts, and is a separate body.
- the absorbent article described in Patent Document 2 has room for improvement in the effective use of the absorption capacity of the absorber.
- an object of the present invention is to provide an absorbent article capable of efficiently diffusing body fluid over a wide range of the absorber and efficiently utilizing the absorption capacity.
- the present invention relates to an absorbent article comprising a top sheet disposed on the skin facing surface side, a back sheet disposed on the non-skin facing surface side, and a vertically long absorbent disposed between the both sheets.
- the absorbent body has an absorbent core containing an absorbent polymer, and the absorbent core includes longitudinal grooves extending in the longitudinal direction of the absorbent article, transverse grooves extending in the lateral direction of the absorbent article, the longitudinal grooves and the longitudinal grooves. It has the block-shaped area
- the high basis weight part of the absorbent core and the low basis weight part composed of the portions located in the transverse groove and the longitudinal groove are integrally formed.
- the vertical groove and the horizontal groove have the same thickness or the thinner horizontal groove, and the width of the horizontal groove is wider than the width of the vertical groove in plan view.
- FIG. 1 is a perspective view of an unfolded disposable diaper according to an embodiment of the present invention.
- FIG. 2 is a partially broken plan view of the disposable diaper shown in FIG. 1 viewed from the top sheet side.
- 3 is a cross-sectional view taken along the line II of FIG.
- FIG. 4 is a perspective view of the top sheet having the disposable diaper shown in FIG. 1.
- FIG. 5 is a plan view of the absorbent core of the disposable diaper shown in FIG. 1 as viewed from the back sheet side. 6 is a partially enlarged plan view of the absorbent core shown in FIG.
- FIG. 7 is a schematic view showing an example of an absorbent body manufacturing apparatus used for the deployable disposable diaper according to the embodiment of the present invention.
- FIG. 1 is a perspective view of an unfolded disposable diaper according to an embodiment of the present invention.
- FIG. 2 is a partially broken plan view of the disposable diaper shown in FIG. 1 viewed from the top sheet side.
- 3 is a cross-sectional view taken along the line II of
- 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 an explanatory diagram for explaining the spread of body fluid to the absorbent core when the wearer excretes during wearing of the disposable diaper shown in FIG. 1.
- FIG. 11 is a perspective view of a top sheet used for a disposable diaper according to another embodiment of the present invention.
- FIG. 12 is the top view which looked at the absorptive core used for the disposable diaper which is another embodiment of this invention from the back surface sheet side.
- FIG. 13 is the top view which looked at the absorptive core used for the disposable diaper which is another embodiment of this invention from the back surface sheet side.
- FIG. 14 is the top view which looked at the absorptive core used for the disposable diaper which is another embodiment of this invention from the back surface sheet side.
- FIG. 15 is the top view which looked at the absorptive core used for the disposable diaper which is another embodiment of this invention from the back surface sheet side.
- FIG. 1 shows a perspective view of an unfolded disposable diaper according to an embodiment of the present invention
- FIG. 2 shows a partially broken plan view of the disposable diaper shown in FIG. 3 is a cross-sectional view taken along the line II of FIG. 4 is a perspective view of the top sheet having the disposable diaper shown in FIG. 1
- FIG. 5 is a plan view of the absorbent core having the disposable diaper shown in FIG. 6 shows a partially enlarged plan view of the absorbent core shown in FIG.
- the disposable diaper 1 (hereinafter also referred to as “diaper 1”) of the present embodiment, as shown in FIGS. 1 and 2, is arranged on the surface sheet 2 disposed on the skin facing surface side and on the non-skin facing surface side. And the vertically long absorbent body 4 arranged between the two sheets 2 and 3. As shown in FIG. 2, the diaper 1 is formed symmetrically with respect to a center line CL extending in the vertical direction.
- the diaper 1 is a longitudinal direction (hereinafter also referred to as “Y direction”) when the diaper 1 is unfolded.
- Y direction direction parallel to the center line CL
- Abdominal part A, dorsal part B, and crotch part C positioned between A and B.
- the abdomen A is a part located on the wearer's abdomen when the diaper is worn
- the dorsal part B is a part located on the wearer's back
- the crotch C is located on the inseam of the wearer. It is a part to do.
- the crotch part C is located in the central part of the diaper 1 in the vertical direction (Y direction).
- the direction orthogonal to the vertical direction (Y direction) will be described as the horizontal direction of the diaper 1 (hereinafter also referred to as “X direction”).
- the “skin facing surface” is a surface disposed on the skin side of the wearer when worn, out of the front and back surfaces of each member such as the surface sheet 2 constituting the diaper 1.
- the “surface” is a surface that is directed to the side opposite to the skin side of the wearer when wearing, out of the front and back surfaces of each member such as the surface sheet 2.
- the diaper 1 extends laterally (X direction) outward from the left and right side edges of the crotch C at the left and right side edges of the ventral side A and the back side part B, respectively. ing.
- the left and right side edges of the crotch part C are curved in an arc shape inward in the lateral direction (X direction), and the central part in the longitudinal direction (Y direction) is constricted inward as a whole.
- the top sheet 2 and the back sheet 3 respectively extend outward from the left and right side edges and the front and rear end edges of the absorber 4.
- the surface sheet 2 has a lateral dimension (X direction) smaller than a lateral dimension (X direction) of the back sheet 3.
- Each of the top sheet 2 and the back sheet 3 is joined to each other directly or through another member at the extended portion extending outward from the peripheral edge of the absorbent body 4, and sandwiches and fixes the absorbent body 4 is doing.
- the adhesive 5 for fixing the absorber 4 will be described in detail later.
- the diaper 1 is a so-called unfolded diaper as shown in FIGS. 1 and 2, and a pair of fastening tapes 7, 7 are provided on the left and right edges of the back side B, and the outer surface of the abdomen A On the (non-skin facing surface), a landing tape 8 for fastening the fastening tapes 7 is provided.
- a three-dimensional gather forming sheet 62 having elastic members 61 fixed in an expanded state in the Y direction is provided on both side portions along the longitudinal direction (Y direction) of the diaper 1.
- a pair of three-dimensional gathers 6 and 6 are formed by being arranged and fixed on the side portions. Further, as shown in FIG.
- a plurality of leg elastic members 63 for forming leg gathers are arranged in an extended state in the Y direction on both side portions along the longitudinal direction (Y direction) of the diaper 1. Leg gathers are formed by the contraction of the leg elastic members 63. Moreover, the waist part elastic member 64 for waist gather formation is distribute
- the surface sheet 2 has a large number of convex portions 21 on the skin facing surface side and concave portions 22 adjacent to the convex portions 21, as shown in FIGS. 2 to 4.
- the skin facing surface side has an uneven structure, and the non-skin facing surface side of the topsheet 2 is flat.
- the top sheet 2 of the diaper 1 includes a first layer 23 and a second layer 24 that are sheet-like materials.
- the first layer 23 constitutes the skin facing surface of the topsheet 2
- the second layer 24 constitutes the non-skin facing surface of the topsheet 2.
- the first layer 23 forms a large number of convex portions 21 that protrude toward the skin facing surface side and are hollow inside, and have concave portions 22 formed between the convex portions 21.
- the second layer 24 is planar. In the recess 22, the first layer 23 and the second layer 24 are joined via the joint portion 25.
- the concave portion 22 has a joint portion 25 and a non-joint portion at the outer peripheral edge of the joint portion 25.
- the convex part 21 is enclosed by the recessed part 22 which has the junction part 25 of 4 points
- the convex portion 21 is a flat rectangular parallelepiped or truncated quadrangular pyramid with rounded ridgelines as a whole.
- the recess 22 is also rectangular in plan view.
- the convex part 21 is surrounded by the junction part 25 (concave part 22) of four points, even if it is enclosed by the junction part 25 (concave part 22) more than four points. Good.
- the convex part 21 and the concave part 22 form the row
- the convex portion 21 is located at a position adjacent to the one convex portion 21 in the left and right rows adjacent to the row in the X direction. Absent. Specifically, in two rows adjacent in the X direction, the joint portions 25 (concave portions 22) are arranged so as to be shifted by a half pitch in the Y direction.
- the one joint portion 25 (concave portion 22) is formed by being surrounded by the convex portion 21 at the front and rear and the left and right. It is a closed recess. That is, when the topsheet 2 is viewed in plan from the first layer 23 side, the joint portions 25 (concave portions 22) are arranged in a staggered pattern, and the convex portions 21 are also arranged in a staggered pattern.
- the height 21 (see FIG. 4) of the convex portion 21 is 0.5 mm or more, preferably 1 mm or more, and 5 mm or less, preferably 4 mm or less, more specifically 0.5 mm or more and 5 mm or less, more preferably 1 mm or more and 4 mm or less.
- the bottom dimension L1 (see FIG. 4) of the convex portion 21 along the Y direction is 2 mm or more and 30 mm or less, preferably 5 mm or less, more specifically 2 mm or more and 30 mm or less, and preferably 2 mm. More preferably, it is 5 mm or less.
- the bottom area of the convex portion 21 is 4 mm 2 or more and 900 mm 2 or less, preferably 25 mm 2 or less, more specifically 4 mm 2 or more and 900 mm 2 or less, more preferably 4 mm 2 or more and 25 mm 2 or less. It is preferable that
- the length L3 (see FIG. 4) of the joint portion 25 of the concave portion 22 is 0.1 mm or more, preferably 0.5 mm or more, and 20 mm or less, preferably 5 mm or less, more specifically 0. It is preferable that the thickness is 1 mm or more and 20 mm or less, particularly 0.5 mm or more and 5 mm or less from the viewpoint that the touch is good and the cushion feeling is high.
- the length in the Y direction of the joint portion 25 is the same as the length L3.
- the first layer 23 and the second layer 24 are made of the same or different sheet-like materials.
- This sheet-like material is substantially non-stretchable.
- any material that is used in conventionally known diapers and is substantially non-stretchable can be used without particular limitation.
- various nonwoven fabrics such as a nonwoven fabric, a spunbond nonwoven fabric, a meltblown nonwoven fabric, a spunlace nonwoven fabric, and a needle punched nonwoven fabric manufactured by the card method can be used.
- transmission by the opening means can also be used.
- the fineness of the constituent fibers is 1 dtex or more, preferably 1.5 dtex or more, and 20 dtex or less, preferably 5.6 dtex or less, more specifically 1 dtex or more and 20 dtex or less. It is preferable from 1.5 dtex or more and 5.6 dtex or less from points, such as ensuring the intensity
- the basis weight of the first layer 23 is 10 g / m 2 or more, preferably 15 g / m 2 or more, and 100 g / m 2 or less, preferably 30 g / m 2 or less, more specifically 10 g / m 2 or more. It is preferably 100 g / m 2 or less, more preferably 15 g / m 2 or more and 30 g / m 2 or less.
- the basis weight of the second layer 24 is 5 g / m 2 or more, preferably 10 g / m 2 or more, and 50 g / m 2 or less, preferably 30 g / m 2 or less, more specifically 5 g / m.
- the total basis weight of the surface sheet 2 including the first layer 23 and the second layer 24 is 15 g / m 2 or more, preferably 20 g / m 2 or more, and 150 g / m 2 or less, preferably 60 g / m 2. More specifically, it is preferably 15 g / m 2 or more and 150 g / m 2 or less, and more preferably 20 g / m 2 or more and 60 g / m 2 or less.
- the absorbent body 4 has an absorbent core 41 containing an absorbent polymer, and the diaper 1 also has a covering material 42 that wraps the absorbent core 41.
- the absorbent body 4 is formed by coating a liquid-retaining absorbent core 41 that is long in the longitudinal direction (Y direction) with a covering material 42 that is a liquid-permeable hydrophilic sheet.
- the absorbent core 41 is partitioned by a vertical groove 44Y extending in the vertical direction (Y direction), a horizontal groove 44X extending in the horizontal direction (X direction), a vertical groove 44Y, and a horizontal groove 44X.
- a block-shaped region 411 composed of a plurality of vertically long high basis weight portions 43 having a basis weight higher than that of each of the grooves 44Y and the horizontal grooves 44X.
- the longitudinal grooves 44Y and the lateral grooves 44X are portions where the absorbent core 41 located in the portion is relatively lower in weight than the high basis weight portion 43.
- Each part is also collectively referred to as “low basis weight portion 44 (horizontal groove 44X, vertical groove 44Y)”.
- an absorptive core in the diaper 1, as shown in FIG. It has the low basic weight part 44 (the horizontal groove 44X, the vertical groove 44Y) which adjoined the part 43 and was relatively low in the basic weight, and was dented in the surface sheet 2 side.
- the high basic weight part 43 and the low basic weight part 44 are integrally molded.
- the absorbent core 41 of the diaper 1 is a raised portion (high basis weight portion 43) that protrudes from the surface sheet 2 side toward the back sheet 3 side on the non-skin facing surface side of the absorbent core 41.
- the hollow part (low basic weight part 44 (the horizontal groove 44X, the vertical groove 44Y)) hollow toward the surface sheet 2 side from the back surface sheet 3 side is formed. And the skin opposing surface side of the absorptive core 41 is flat.
- the absorbent core will be described in more detail.
- the low basis weight portion 44 of the absorbent core 41 in the diaper 1 is a portion located in a plurality of linear (continuous linear) horizontal grooves 44 ⁇ / b> X extending in the horizontal direction (X direction).
- the block-shaped region 411 of the absorbent core 41 provided in the diaper 1 is a lattice as a whole by linear linear grooves 44X extending in the horizontal direction (X direction) and linear vertical grooves 44Y extending in the vertical direction (Y direction).
- a high basis weight portion 43 that is long in the vertical direction (Y direction) is arranged in each of the portions (lattice positions) defined by these linear horizontal grooves 44X and vertical grooves 44Y. Has been.
- the absorbent core 41 has a high plow disposed in a section defined by a horizontal groove 44X and a vertical groove 44Y arranged in a lattice shape, and a horizontal groove 44X and a vertical groove 44Y.
- the diaper 1 further has a non-block region 412 arranged over the outer periphery of the block-shaped region 411.
- the absorbent core 41, as shown in FIG. 5 is the same as the total width W B total width W A of the front section A is in the rear section B, the width of the block-shaped region 411 in the front section A W A1 is the same as the width W B1 of the block-shaped region 411 in the back side portion B. That is, as shown in FIGS.
- the block-shaped region 411 is formed in a rectangular shape that is long in the vertical direction (Y direction), and the width W A1 and the back side of the ventral portion A of the block-shaped region 411.
- the width B B1 of the part B is the same.
- ventral Both side edges in A and both side edges in the back side B extend in the same length outwardly in the lateral direction (X direction) from both side edges in the crotch C, and as a whole in the longitudinal direction (Y direction) center part A portion closer to the ventral side A is formed in a shape constricted inward, and the entire area of the dorsal side B is larger than the entire area of the ventral side A.
- the non-blocking region 412 has more absorbent material than the low basis weight portion 44.
- the block-shaped region 411 of the absorbent core 41 will be described in detail.
- the high basis weight portion 43 partitioned by the horizontal groove 44X and the vertical groove 44Y is regularly arranged in the horizontal direction.
- Four block structures arranged in the direction (X direction) are regularly arranged from the abdominal side A to the back side B in 14 rows in the vertical direction (Y direction).
- six vertical grooves 44Y extending in the vertical direction (Y direction) are linearly formed from the ventral side A to the back side B, respectively. It is arranged.
- the high basis weight portion 43 and the low basis weight portion 44 (the horizontal groove 44 ⁇ / b> X and the vertical groove 44 ⁇ / b> Y) of the absorbent core 41 are integrally formed, and the diaper 1 is not blocked.
- the region 412 is also integrally formed with the high basis weight portion 43 and the low basis weight portion 44 (lateral groove 44X, vertical groove 44Y).
- “being integrally formed” means that the high basis weight portion 43, the low basis weight portion 44 (the horizontal groove 44X, the vertical groove 44Y) and the non-blocking region 412 are connected via a bonding means such as an adhesive or heat fusion. Without being separable from each other, meaning that they are integrally formed from the same material.
- region 412 are integrally molded, it will have the continuity which a bodily fluid can move smoothly. A method for manufacturing such an absorber 4 will be described later.
- the absorbent core 41 has a pulp single layer 410 formed on the most non-skin facing surface side.
- region 411 is convex to the back surface sheet 3 side, and the non-blocking area
- region 412 is also convex to the back surface sheet 3 side.
- the low basic weight part 44 vertical groove 44Y which comprises the block-shaped area
- the absorbent core 41 of the diaper 1 has a raised portion that protrudes from the surface sheet 2 side toward the back sheet 3 side on the non-skin facing surface side in the thickness direction T of the diaper 1.
- the top portions of the sides, that is, the high basis weight portion 43 and the non-blocking region 412 are formed of a layer 410 of pulp alone.
- the hollow part (groove) recessed in the surface sheet 2 side of the absorbent core 41 is mainly formed by the low basis weight part 44 (the horizontal groove 44X, the vertical groove 44Y), and the back sheet 3 side of the absorbent core 41
- the raised portion that protrudes upward is mainly formed by the high basis weight portion 43 and the non-blocking region 412.
- the hollow portion is mainly formed by the low basis weight portion 44 means that, for example, the high basis weight portion 43 near the boundary between the low basis weight portion 44 and the high basis weight portion 43 is a part of the recess.
- the raised portion is mainly formed by the high basis weight portion 43 and the non-blocking region 412 means, for example, the high basis weight portion 43 and the low basis weight portion. This includes the case where the low basis weight portion 44 in the vicinity of the boundary with 44 forms a part of the hollow portion.
- the low basic weight part 44 is unevenly distributed in the surface sheet 2 side (the skin opposing surface side of the absorber 4) in the thickness direction T of the diaper 1, as shown in FIG. ing.
- the absorbent core 41 has a flat surface sheet 2 side.
- the absorbent core 41 of the absorbent body 4 provided in the absorbent article of the present invention has a plurality of high basis weight portions 43 arranged in a portion partitioned by the vertical groove 44 ⁇ / b> Y and the horizontal groove 44 ⁇ / b> X.
- Each is formed to be long in the vertical direction (Y direction).
- the vertical groove 44Y and the horizontal groove 44X have the same thickness, or the horizontal groove 44X is thinner than the vertical groove 44Y, and the width of the horizontal groove 44X in plan view. Is characterized by being wider than the width of the vertical groove 44Y. From the viewpoint of liquid absorption and liquid diffusion, it is preferable that the vertical groove 44Y and the horizontal groove 44X have the same thickness, or the horizontal groove 44X is thinner than the vertical groove 44Y.
- the total length in the vertical direction (Y direction) is preferably 250 mm or more and 550 mm or less, and the total width in the horizontal direction (X direction) is preferably 50 mm or more and 200 mm or less.
- the block-shaped region 411 has a length in the longitudinal direction (Y direction) of 70% or more, preferably 85% or more, and 98% or less, preferably 98% or less of the entire length of the absorbent core 41 in the Y direction.
- the length is preferably 95% or less, more specifically 70% or more and 98% or less, and more preferably 85% or more and 95% or less.
- the block shape region 411 has a length in the lateral direction (X direction) of 30% or more, preferably 50% or more, and 90% or less, preferably 90% or less of the entire width of the absorbent core 41 in the X direction.
- the length is preferably 70% or less, more specifically, 30% or more and 90% or less, and more preferably 50% or more and 70% or less.
- the total length in the vertical direction (Y direction) is preferably 100 mm or more and 540 mm or less
- the total width in the horizontal direction (X direction) is preferably 20 mm or more and 140 mm or less.
- the length in the vertical direction (Y direction) at each end in the vertical direction (Y direction) is preferably 10 mm or more and 150 mm or less.
- the length in the lateral direction (X direction) of each side portion along the longitudinal direction (Y direction) is 10 mm or more and 40 mm or less in the ventral side portion A.
- the crotch part C is preferably 10 mm or more and 30 mm or less, and the back side part B is preferably 10 mm or more and 40 mm or less.
- the size and basis weight of the high basis weight portion 43 and the low basis weight portion 44 (lateral groove 44X, vertical groove 44Y) constituting the block shape region 411 will be further described in detail.
- the high basic weight part 43 is formed in a rectangular shape that is long in the vertical direction (Y direction) in plan view, as shown in FIG.
- the high basis weight portion 43 is formed in a rectangular shape in plan view, but the four corners may have an arc shape, such as a polygonal shape, an ellipse, or a combination thereof. Also good.
- the high basis weight portion 43 of the diaper 1 has a length L4 in the longitudinal direction (Y direction) of 5 mm or more, preferably 15 mm, as shown in FIG. As described above, it is preferably 30 mm or less, preferably 25 mm or less, more specifically 5 mm or more and 30 mm or less, and further preferably 15 mm or more and 25 mm or less.
- the length L5 in the lateral direction (X direction) is 3 mm or more, preferably 5 mm or more, and 20 mm or less, preferably 15 mm or less, more specifically 3 mm or more and 20 mm or less, preferably 5 mm. More preferably, it is 15 mm or less.
- the width L6 of the linear horizontal groove 44X extending in the horizontal direction (X direction) is wider than the width L7 of the linear vertical groove 44Y extending in the vertical direction (Y direction).
- L7 is 110% or more, preferably 120% or more, and 500% or less, preferably 300% or less, more specifically 110% or more and 500% or less.
- the width is 120% or more and 300% or less.
- the width L6 of the linear horizontal groove 44X extending in the horizontal direction (X direction) is 2% or more, preferably 5% or more of the length (L4) in the vertical direction (Y direction) of the high basis weight portion 43.
- the width L7 of the linear vertical groove 44Y extending in the vertical direction (Y direction) is 2% or more, preferably 10% or more of the length L5 in the horizontal direction (X direction) of the high basis weight portion 43,
- the length is 30% or less, preferably 25% or less, more specifically 2% or more and 30% or less, and preferably 10% or more and 25% or less. preferable.
- the width L6 of the linear transverse groove 44X extending in the lateral direction (X direction) is 0.5 mm or more, preferably 1 mm or more, and 5 mm or less, preferably 3 mm when the absorbent article is used in, for example, a disposable diaper. More specifically, it is preferably 0.5 mm or more and 5 mm or less, more preferably 1 mm or more and 3 mm or less.
- the width L7 of the linear longitudinal groove 44Y extending in the longitudinal direction (Y direction) is 0.01 mm or more, preferably 0.02 mm or more, and 4.6 mm when the absorbent article is used in a disposable diaper, for example.
- the widths L4 and L5 are measured values at the position of the bottom of the hollow portion (low basis weight portion 44 (lateral groove 44X, vertical groove 44Y)) in the absorbent body 4.
- the horizontal groove 44X and the vertical groove 44Y have the same thickness, or the horizontal groove 44X is thinner than the vertical groove 44Y, and the thickness (low basis weight) of the low basis weight portion 44 (horizontal groove 44X, vertical groove 44Y).
- the portion 44 thickness of the bottom portion of the horizontal groove 44X, vertical groove 44Y) is preferably 30% or more and 90% or less of the thickness of the high basis weight portion 43.
- the thickness of the low basis weight portion 44 (lateral groove 44X, vertical groove 44Y) is 1.5 mm or more, preferably 2.5 mm or more, and 4.5 mm or less, preferably 4.0 mm or less, more specifically.
- the vertical groove 44Y and the thickness of the horizontal groove 44X will be described in detail.
- the horizontal groove 44X is thinner than the vertical groove 44Y, and the thickness of the vertical groove 44Y is 1.5 mm or more, preferably 2.5 mm or more, and 4 0.5 mm or less, preferably 4.0 mm or less, more specifically 1.5 mm or more and 4.5 mm or less, and more preferably 2.5 mm or more and 4.0 mm or less.
- the thickness of the lateral groove 44X is 1.5 mm or more, preferably 2.5 mm or more, and 4.5 mm or less, preferably 4.0 mm or less, more specifically 1.5 mm or more and 4.5 mm or less. It is preferable that it is 2.5 mm or more and 4.0 mm or less.
- the thickness of the high basis weight portion 43 is 2 mm or more, preferably 3 mm or more, and 8 mm or less, preferably 7 mm or less, more specifically 2 mm or more and 8 mm or less, and preferably 3 mm or more and 7 mm or less. Is more preferable.
- the thickness of the non-blocking region 412 is the same as the thickness of the high basis weight portion 41.
- the thickness of the high basis weight part 43, the low basis weight part 44 (the horizontal groove 44X, the vertical groove 44Y) and the non-blocking region 412 is obtained by cutting the sample into a predetermined size and pressurizing the measurement site at 5 kPa for 10 minutes. Measure immediately after the test.
- the measurement location is 3 points or more including 1 point or more each of the abdominal side, crotch portion, and back side per one sheet, and the average thickness of 2 diaper samples (6 or more measurement locations) is obtained.
- the diaper 1 is cut with a sharp razor in the vertical direction (Y direction) or the horizontal direction (X direction) shown in FIG. 2, and the cross section of the cut sample is measured.
- the thickness of the high basis weight portion 43 and the non-blocking region 412 is a value measured at the thickest position in the convex portion, and the thickness of the low basis weight portion 44 (horizontal groove 44X, vertical groove 44Y) is within the bottom of the recess. It is a value measured at the thinnest position. If it is difficult to measure with the naked eye, the cross section of the cut sample may be observed and measured at a magnification of 20 to 50 times using, for example, a microscope (VHX-1000 manufactured by KEYENCE).
- the low basis weight portion 44 (horizontal groove 44X, vertical groove 44Y) efficiently diffuses body fluid over a wide range of the absorbent body and efficiently utilizes the absorption capacity.
- the basis weight is 20% or more, preferably 30% or more, and 80% or less, preferably 70% or less, more specifically, of the basis weight of the high basis weight portion 43. 20% or more and 80% or less, more preferably 30% or more and 70% or less.
- the low basis weight portion 44 (lateral groove 44X, vertical groove 44Y) has a basis weight of 100 g / m 2 or more, preferably 150 g / m 2 or more, and 500 g / m 2 or less, preferably 400 g. / M 2 or less, more specifically 100 g / m 2 or more and 500 g / m 2 or less, more preferably 150 g / m 2 or more and 400 g / m 2 or less.
- the high basis weight portion 43 has a basis weight of 300 g / m 2 or more, preferably 350 g / m 2 or more, and 900 g / m 2 or less, preferably 800 g / m 2 or less, more specifically, It is preferably 300 g / m 2 or more and 900 g / m 2 or less, and more preferably 350 g / m 2 or more and 800 g / m 2 or less.
- the basis weight of the non-block area 412 is the same as the basis weight of the high basis weight portion 41.
- the basis weights of the high basis weight portion 43 and the low basis weight portion 44 are measured as follows.
- region 412 is as follows.
- the absorbent core 41 is cut using a feather blade razor along the boundary line between the high basis weight portion 43 and the low basis weight portion 44 (horizontal groove 44X, vertical groove 44Y).
- Ten pieces of the high basis weight portion 43 obtained by cutting were measured using an electronic balance (Electronic balance GR-300 manufactured by A & D, accuracy: 4 digits after the decimal point). 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 43 to calculate the basis weight of the high basis weight portion 43.
- the basis weight of the non-block area 412 is calculated in the same manner as the basis weight of the high basis weight portion 43.
- the length is 100 mm and the width is the low basis weight portion 44 (vertical groove 44Y).
- a small striped low basis weight portion 44 (longitudinal groove 44Y) 5 pieces are cut out using a feather blade razor.
- Each of the obtained 5 pieces was measured using an electronic balance (Electronic Balance GR-300 manufactured by A & D, accuracy: 4 digits after the decimal point), and on average, 1 piece of the low basis weight portion 44 (vertical groove 44Y).
- the basis weight of the low basis weight portion 44 (vertical groove 44Y) is calculated by dividing the obtained average weight by the average area per piece of the low basis weight portion 44 (vertical groove 44Y). For the low basis weight portion 44 (horizontal groove 44X), the basis weight is calculated in the same manner as the low basis weight portion 44 (vertical groove 44Y).
- the high basis weight portion 43 and the non-blocking region 412 are formed to be substantially the same or denser than the low basis weight portion 44 (lateral groove 44 ⁇ / b> X, longitudinal groove 44 ⁇ / b> Y).
- the low basis weight portion 44 (the horizontal groove 44X and the vertical groove 44Y) has a high density from the viewpoint of liquid diffusion, the flexibility of the absorbent body, and fit. 50% or more, preferably 75% or more, and 100% or less, preferably 95% or less, more specifically 50% or more and 100% or less, more preferably 75% or more of the density of the amount part 43. More preferably, it is 95% or less.
- low basis weight portion 44 (lateral groove 44X, longitudinal grooves 44Y), the density, 0.05 g / cm 3 or higher, preferably 0.07 g / cm 3 or more, and, 0.15 g / cm 3 or less, preferably 0.13 g / cm 3 or less, and more specifically, is preferably not more than 0.05 g / cm 3 or more 0.15g / cm 3, 0.07g / cm 3 or more 0.13 g / cm More preferably, it is 3 or less.
- high basis weight portion 43 its density, 0.05 g / cm 3 or higher, preferably 0.07 g / cm 3 or more, and, 0.15 g / cm 3 or less, preferably 0.13 g / cm 3 or less and more specifically, it is preferably 0.05 g / cm 3 or more 0.15 g / cm 3 or less, and more preferably not more than 0.07 g / cm 3 or more 0.13 g / cm 3.
- the density of the non-blocking region 412 is the same as the density of the high basis weight portion 41.
- the density of the high basis weight portion 43, the non-blocking region 412 and the low basis weight portion 44 is the density of the high basis weight portion 43, the non-blocking region 412 and the low density portion 44 obtained by the method described above. Calculated by dividing the basis weight by the respective thicknesses determined by the method described above.
- a space 9 is formed between the low basis weight portion 44 (lateral groove 44 ⁇ / b> X, vertical groove 44 ⁇ / b> Y) of the absorbent core 41 and the covering material 42. That is, a space 9 formed by the absorbent core 41 and the covering material 42 that wraps the absorbent core 41 is formed in the absorbent body 4.
- the low basis weight portion 44 horizontal groove 44 ⁇ / b> X, vertical groove 44 ⁇ / b> Y
- the back sheet 3 non-skin facing surface
- a high basis weight portion 43 is arranged at the position of the lattice, and a low basis weight portion 44 (horizontal groove 44X, vertical groove 44Y) is formed so as to surround the high basis weight portion 43. ing. Accordingly, in the diaper 1, as shown in FIGS.
- a plurality of spaces 9 ⁇ / b> X formed by the lateral grooves 44 ⁇ / b> X recessed toward the top sheet 2 and the covering material 42 are formed in the lateral direction (X
- a hydrophilic intermediate sheet 5 is disposed between the absorbent body 4 and the top sheet 2.
- a rectangular intermediate sheet 5 that is long in the longitudinal direction (Y direction) is disposed between the top sheet 2 and the covering material 42 that constitutes the absorber 4.
- Such an intermediate sheet 5 is a so-called sub-layer sheet, and is arranged from the abdominal side A to the back side B so as to cover the absorbent core 41 constituting the absorber 4.
- the intermediate sheet 5 (sublayer sheet) preferably has a basis weight of 15 g / m 2 or more and 100 g / m 2 or less.
- a sheet mainly composed of hydrophilic fibers (sheet having a hydrophilic fiber content of preferably 90% by mass or more) can be used.
- the sheet include paper, Nonwoven fabrics, webs and the like can be mentioned.
- the absorbent core 41 and the covering material 42 that wraps the absorbent core 41 are fixed via an adhesive, and the absorbent body 4 having the fixed absorbent core 41 and the covering material 42 is attached to the surface.
- the sheet 2 and the back sheet 3 are fixed to each other via an adhesive.
- the covering material 42 and the non-skin facing surface 41 ⁇ / b> U of the absorbent core 41 are joined by a non-skin-side absorbent adhesive 51 ⁇ / b> U, and the non-skin-side absorbent adhesive 51 ⁇ / b> U is the diaper 1.
- the coating is applied intermittently in the horizontal direction (X direction) and in a straight line in the vertical direction (Y direction). Specifically, in the diaper 1, as shown in FIG.
- both sides of the covering material 42 are folded using a single covering material 42, and the covering material 42 is placed on the back sheet 3 side of the absorbent core 41.
- the absorbent core 41 is wrapped so that the side edges of each other overlap. Therefore, in one covering material 42, the part disposed on the skin facing surface 41 ⁇ / b> T side of the absorbent core 41 becomes the skin-side covering member 421, and the part disposed on the non-skin facing surface 41 ⁇ / b> U side of the absorbent core 41.
- a non-skin side covering member 422 is formed.
- the skin-side covering member 421 and the non-skin-side covering member 422 are formed from one covering material 42, but may be formed from two separate covering materials. Good.
- the non-skin-side covering member 422 on the back sheet 3 side of the covering material 42 and the non-skin-facing surface 41U of the absorbent core 41 are interposed via the non-skin-side absorbent core adhesive 51U (see FIG. 3A). It is fixed.
- the non-skin-side absorbent core adhesive 51 ⁇ / b> U is, for example, intermittently in the horizontal direction (X direction) and straight in the vertical direction (Y direction) using a coater gun as shown in FIG. It is coated in the shape of a stripe, and is coated in a stripe shape as a whole.
- the interval between the non-skin-side absorbent core adhesives 51U adjacent in the lateral direction (X direction) is preferably 0.5 mm or more and 15 mm or less.
- the basis weight (coating amount) of the non-skin-side absorbent core adhesive 51U is 0.5 g / m 2 or more, preferably 1 g / m 2 or more, and 15 g / m 2 or less, preferably 10 g / m. m 2 or less, more specifically 0.5 g / m 2 or more and 15 g / m 2 or less, more preferably 1 g / m 2 or more and 10 g / m 2 or less.
- the absorbent body 4 included in the diaper 1 that is, the high basis weight portion 43 (high density), the non-blocking region 412 (high density) and the low basis weight portion 44 (low density) (lateral groove 44 ⁇ / b> X, vertical groove 44 ⁇ / b> Y).
- the manufacturing method of the absorber 4 provided with the integrally formed absorptive core 41 is demonstrated.
- FIG. 7 shows an embodiment of a method for manufacturing the absorbent body 4 and a manufacturing apparatus used therefor.
- the manufacturing apparatus of the absorbent body 4 includes a rotary drum 50 that is rotationally driven in the direction of arrow R1, and a duct 60 that supplies an absorbent material 45 containing an absorbent polymer that is a raw material of the absorbent core 41 to the outer peripheral surface of the rotary drum 50.
- the transfer roll 70 disposed obliquely below and downstream of the rotary drum 50 and driven to rotate in the direction of the arrow R2, and the vacuum box 65 disposed between the duct 60 and the transfer roll 70 in the circumferential direction of the rotary drum 50
- a mesh belt 75 that is a sheet-like air-permeable member disposed between the vacuum box 65 and the rotary drum 50 and between the transfer roll 70 and the rotary drum 50, and below the transfer roll 70.
- a vacuum conveyor 80 is provided.
- the rotating drum 50 has a cylindrical shape, and receives power from a prime mover such as a motor, so that 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 (not shown) 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 arranged 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 portion 44 (lateral groove 44X, vertical groove 44Y) described above. ing.
- the air permeable member 53 corresponding to the horizontal groove 44X is formed wider than the width of the air permeable member 53 corresponding to the vertical groove 44Y.
- a region 54 composed only of the mesh plate 52 partitioned by the air-impermeable member 53 arranged in this way becomes a portion corresponding to the high basis weight portion 43, and is partitioned by the air-permeable member 53.
- a region 55 consisting only of the mesh plate 52 in the entire outer periphery of the portion thus formed becomes a portion corresponding to the non-blocking region 412.
- 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 the other end side (not shown) has a fiber material introduction device.
- the fiber material introducing device includes, for example, a pulverizer that crushes sheet-like wood pulp into defibrated pulp and sends the defibrated pulp (fiber material) into the duct, and introduces an absorbing polymer into the duct 60
- An absorbent 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 601 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 the negative pressure in the space 56 causes an air flow that conveys the absorbent material 45 to the outer peripheral surface of the rotary drum 50 in the duct 60.
- 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 first defibrated pulp (fiber material) into the duct 60.
- the pulp (fiber material) rides on the airflow flowing in the duct 60 and is scattered to be supplied toward the outer peripheral surface of the rotating drum 50.
- pulp (fiber material) While the portion covered with the duct 60 is being conveyed, pulp (fiber material) is sucked into the drum recess 51 of the rotary drum 50. As shown in FIG. 9, the pulp (fiber material) is gradually deposited on the mesh plate 52 in each region 54 and region 55 of the drum recess 51. The pulp (fiber material) deposit 410a thus obtained becomes a portion corresponding to the layer 410 of the pulp alone.
- the absorbent material 45 rides on the airflow flowing through the duct 60 and is in a scattered state. Is supplied toward the outer peripheral surface of the rotary drum 50.
- the absorbent material (mixture of fiber material and absorbent polymer) 45 is sucked onto the deposit 410a in the drum recess 51 of the rotary drum 50.
- the absorbent material 45 gradually deposits on the deposit 410 a 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 breathable member 53) 46a formed by depositing the absorbent material 45 on the breathable member 53 has a relatively large deposit amount of the absorbent material 45.
- the other portions (corresponding to the region 54) 46b and the portion (corresponding to the region 55) 46c have a relatively large amount of deposited absorbent material 45 and have deposits 46 therein.
- 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 while being 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 the 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 4 (absorbent core 41) is obtained.
- the pressurizing means 90 includes a pair of rolls 91 and 92 having at least one surface smooth, and pressurizes an object to be pressed introduced between the rolls 91 and 92 from the upper and lower surfaces in the thickness direction. It is configured to be compressible.
- the portion is compressed more strongly than the portion 46a having a small thickness (corresponding to the breathable member 53).
- the portion (region 54 corresponding portion) 46b (convex portion) and the portion (region 55 corresponding portion) 46c of the deposit 46 are included.
- the high basis weight portion 43 and the non-blocking region 412 having a relatively high density are formed, and a portion (corresponding portion) 46a (concave portion) in the deposit 46 is formed in the absorbent core 41. It becomes the low basic weight part 44 (horizontal groove 44X, vertical groove 44Y) of a relatively low density.
- the formation material of the disposable diaper 1 of this embodiment is demonstrated.
- the back sheet 3 and the three-dimensional gather forming sheet 62 can be used without particular limitation as long as they are normally used for absorbent articles such as disposable diapers.
- a resin film or a laminate of a resin film and a nonwoven fabric can be used as the back sheet 3.
- As the three-dimensional gather forming sheet 62 a stretchable film, a nonwoven fabric, a woven fabric, or a laminated sheet thereof can be used.
- the fastening tape 7 can be used without particular limitation as long as it is usually used for absorbent articles such as disposable diapers.
- the absorptive core 41 that constitutes the absorbent body 4 a structure in which absorbent polymer particles are held in an aggregate of fibers such as pulp fibers can be used.
- a hydrophilic sheet for example, a core-wrap sheet made of a water-permeable thin paper (tissue paper) or a water-permeable nonwoven fabric can be used.
- the elastic member 61 for forming a three-dimensional gather, the leg elastic member 63, and the waist elastic member 64 include natural rubber, polyurethane, polystyrene-polyisoprene copolymer, polystyrene-polybutadiene copolymer, and ethyl acrylate-ethylene.
- a thread-like stretchable material made of a polyethylene- ⁇ -olefin copolymer or the like can be used.
- any adhesive can be used without particular limitation as long as it is usually used for absorbent articles such as disposable diapers.
- a hot melt adhesive is used. be able to.
- hot melt adhesives include blocks such as styrene-isoprene-styrene block copolymer (SIS), styrene-butadiene-styrene block copolymer (SBS), and styrene-ethylene-butylene-styrene copolymer (SEBS).
- SIS styrene-isoprene-styrene block copolymer
- SBS styrene-butadiene-styrene block copolymer
- SEBS styrene-ethylene-butylene-styrene copolymer
- the diaper 1 has a high basis weight portion 43 that is long in the vertical direction (Y direction) arranged in the horizontal groove 44X, the vertical groove 44Y, and the portion partitioned by the horizontal groove 44X, the vertical groove 44Y.
- a block-shaped region 411 consisting of Since the absorbent core 41 having the high basis weight portion 43 that is long in the vertical direction (Y direction) is used, body fluid flows in the vertical direction (Y direction) when the wearer excretes the diaper 1 while wearing it. easy.
- the absorbent core 41 of the absorbent body 4 of the diaper 1 has the same thickness of the horizontal groove 44X and the vertical groove 44Y, or the horizontal groove 44X is thinner than the vertical groove 44Y. Since the width of the horizontal groove 44X is wider than the width of the vertical groove 44Y in plan view, body fluid flows more easily along the horizontal groove 44X than the vertical groove 44Y, as shown in FIG. In this way, as shown in FIG. 10, the body weight easily flows in the vertical direction (Y direction) by the high basis weight portion 43 that is long in the vertical direction (Y direction) of the block-shaped region 411, and further, the horizontal groove 44X causes the horizontal groove 44X to enter the horizontal groove 44X.
- the body fluid easily flows in the lateral direction (X direction), and the body fluid can be efficiently diffused in a wide range of the absorber 4. Therefore, a wide range of absorption capacity of the absorber 4 can be utilized efficiently.
- the absorbent core 41 has a raised portion and a back surface in which the skin facing surface side is flat and the non-skin facing surface side is raised from the top sheet 2 side toward the back sheet 3 side. Since the hollow part which became depressed toward the surface sheet 2 side from the sheet
- the diaper 1, as shown in FIG. 5, the absorbent core 41 has a block-shaped region 411 and the non-blocking region 412, the whole overall width W A of the front section A is in the rear section B is the same as the width W B, the width W B1 of the width W A1 and the rear section B of the stomach portion a of the block-shaped regions 411 have the same.
- the non-blocking region 412 is formed in a shape in which the portion closer to the ventral side A from the central portion in the vertical direction (Y direction) is inwardly bound as a whole.
- the entire area of the side portion B is larger than the entire area of the ventral side portion A. Therefore, when using the diaper 1 for a newborn baby used in the state of lying on its back, body fluid can be efficiently diffused in the absorbent core 41 in the dorsal side B.
- the diaper 1 has a non-skin-side absorbent adhesive 51U that joins the covering material 42 and the non-skin facing surface 41U of the absorbent core 41 in the lateral direction of the diaper 1 (
- the coating is intermittently applied in the X direction) and linearly in the vertical direction (Y direction).
- the non-skin-side absorbent adhesive 51U is applied in a straight line in the longitudinal direction (Y direction) to the absorbent core 41 having the high basis weight portion 43 that is long in the longitudinal direction (Y direction). Therefore, if a wearer excretes during wearing of the diaper 1, the flow of a bodily fluid will be restrict
- the diaper 1 As shown in FIG. 3, a layer 410 of a single pulp is formed on the most non-skin facing surface side of the absorbent core 41. Therefore, the body fluid can smoothly move through the absorbent core 41, the body fluid can be efficiently diffused over a wide range of the absorber 4, and the absorption capacity of the wide range of the absorber 4 can be efficiently utilized. There is an effect that you can.
- the diaper 1 has the surface sheet 2 which has many convex parts 21 convex on the skin facing surface side and concave parts 22 adjacent to the convex parts 21, and the skin sheet of the top sheet 2 faces the skin.
- the surface side has an uneven structure.
- the diaper 1 has an intermediate sheet 5 (sublayer sheet) disposed between the top sheet 2 and the covering material 42, so that the liquid is smoothly transferred to the absorber 4. The effect of.
- the disposable diaper which is an embodiment of the absorbent article of the present invention is not limited to the disposable diaper of the above-described embodiment, and can be appropriately changed.
- the absorbent core 41 is directed from the top sheet 2 side to the back sheet 3 side on the non-skin facing side as shown in FIG. 3.
- the raised portion and the recessed portion recessed from the back sheet 3 side toward the top sheet 2 side are formed, but the non-skin facing surface side may be flat.
- the hydrophilic intermediate sheet 5 is distribute
- the surface sheet 2 consists of the 1st layer 23 and the 2nd layer 24 of a sheet-like thing, and comprises the skin opposing surface of the surface sheet 2
- the first layer 23 that protrudes to the skin facing surface side has a large number of convex portions 21 that are hollow inside, and the second layer 24 that constitutes the non-skin facing surface of the topsheet 2 is planar.
- a flat general nonwoven fabric used for absorbent articles such as disposable diapers may be used, and as shown in FIG.
- a surface sheet in which the inside of the convex portion 21 is solid, and the convex portion 21 and the concave portion 22 extend in the vertical direction (Y direction) and are alternately arranged in the horizontal direction (X direction) may be used.
- the second fiber layer protrudes at a portion other than the joint portion with the first fiber layer to form a convex portion, while the joint portion forms a concave portion.
- the heat-shrinkable fiber is preferably a latent crimpable fiber.
- the absorptive core 41 of the absorber 4 is a rectangular block-shaped area
- the absorbent core 41 of the absorbent body 4 as described above, the absorbent cores 41A to 41D shown in FIGS. 12 to 15 may be provided.
- the description in detail regarding the absorbent core 41 included in the diaper 1 described above is appropriately applied to points that are not particularly described. 12 to 15, the same members as those in FIG.
- the absorbent cores 41A to 41D shown in FIGS. 12 to 15 have lateral edges (X direction) outward from the lateral edges of the crotch C at both side edges of the ventral side A and back side parts B, respectively. And has a block-shaped region 411 formed in a shape in which the central portion in the longitudinal direction (Y direction) is constricted inward as a whole, and the shape in which the central portion in the longitudinal direction (Y direction) is constricted inward
- the non-blocking region 412 is formed.
- each of the plurality of linear lateral grooves 44X extends over the entire length in the lateral direction (X direction)
- An absorbent core in which each of the linear vertical grooves 44Y extends over the entire length in the vertical direction (Y direction) may be used.
- the back side portion 411b of the block-shaped region 411 has a high basis weight portion 43 partitioned by the horizontal grooves 44X and the vertical grooves 44Y regularly in the horizontal direction (X direction). ) Is formed by regularly arranging four rows in the vertical direction (Y direction).
- the crotch part 411c of the block-shaped region 411 has a block structure in which three high basis weight portions 43 are regularly arranged in the horizontal direction (X direction). Seven rows are arranged in the (Y direction).
- the ventral side portion 411a of the block-shaped region 411 has five high basis weight portions 43 partitioned by the horizontal grooves 44X and the vertical grooves 44Y regularly arranged in the horizontal direction (X direction).
- the block structure formed is regularly arranged in four rows in the vertical direction (Y direction).
- four of the six longitudinal grooves 44Y extending in the longitudinal direction (Y direction) are respectively connected from the ventral side A to the back side. It is arranged linearly over B.
- the back side portion 411b of the block-shaped region 411 has a regular basis in the horizontal direction (X direction), which is a high basis weight portion 43 partitioned by a horizontal groove 44X and a vertical groove 44Y.
- the four block structures are arranged regularly in the vertical direction (Y direction).
- the crotch part 411c of the block-shaped region 411 has three high basis weight portions 43 partitioned by the horizontal groove 44X and the vertical groove 44Y regularly arranged in the horizontal direction (X direction).
- the block structure is formed by regularly arranging seven rows in the vertical direction (Y direction). Further, as shown in FIG.
- the ventral side portion 411a of the block-shaped region 411 is regularly arranged with four high basis weight portions 43 partitioned by the horizontal grooves 44X and the vertical grooves 44Y in the horizontal direction (X direction).
- the block structure is regularly arranged in four rows in the vertical direction (Y direction).
- the vertical groove 44Y extending in any vertical direction (Y direction) is also linearly arranged from the ventral side A to the back side B. It has not been.
- the back side portion 411 b of the block-shaped region 411 has a regular basis in the horizontal direction (X direction).
- One row is regularly arranged in the vertical direction (Y direction).
- the crotch part 411c of the block-shaped region 411 is regularly arranged with three high basis weight portions 43 partitioned by the horizontal groove 44X and the vertical groove 44Y in the horizontal direction (X direction).
- the block structure is formed by regularly arranging seven rows in the vertical direction (Y direction). Further, as shown in FIG. 14, the ventral portion 411 a of the block-shaped region 411 is regularly arranged with four high basis weight portions 43 partitioned by the horizontal grooves 44 ⁇ / b> X and the vertical grooves 44 ⁇ / b> Y in the horizontal direction (X direction). A block structure in which one block is regularly arranged in the vertical direction (Y direction) and five high basis weight portions 43 are regularly arranged in the horizontal direction (X direction) is regularly arranged in the vertical direction. Three rows are arranged in the direction (Y direction). In the block shape region 411 of the absorbent core 41C, as shown in FIG. 14, the vertical groove 44Y extending in any vertical direction (Y direction) is also linearly arranged from the ventral side A to the back side B. It has not been.
- the back side portion 411b of the block-shaped region 411 has a regular basis in the horizontal direction (X direction), which is a high basis weight portion 43 partitioned by the horizontal groove 44X and the vertical groove 44Y.
- the crotch portion 411c of the block-shaped region 411 has two high basis weight portions 43 partitioned by the horizontal groove 44X and the vertical groove 44Y regularly arranged in the horizontal direction (X direction).
- the block structure is formed by regularly arranging seven rows in the vertical direction (Y direction).
- the ventral side portion 411a of the block-shaped region 411 is regularly arranged with four high basis weight portions 43 partitioned by the horizontal grooves 44X and the vertical grooves 44Y in the horizontal direction (X direction).
- the block structure in which one row is regularly arranged in the vertical direction (Y direction), and further, the block structure in which six high basis weight portions 43 are regularly arranged in the horizontal direction (X direction) is arranged vertically.
- Three rows are arranged in the direction (Y direction).
- three of the seven longitudinal grooves 44Y extending in the vertical direction (Y direction) are respectively connected from the ventral side A to the back side. It is arranged linearly over B.
- the low basic weight part 44 of the absorptive core 41 which comprises the absorber 4 is a linear transverse groove extended in a horizontal direction (X direction).
- 44X and linear vertical grooves 44Y extending in the vertical direction (Y direction) are formed in a lattice shape as a whole, but are not limited to the lattice shape.
- the disposable diaper 1 of the above-mentioned embodiment is a deployment-type disposable diaper as shown in FIG. 1, a pants-type disposable diaper may be sufficient.
- An absorbent article comprising a top sheet disposed on the skin facing surface side, a back sheet disposed on the non-skin facing surface side, and a vertically long absorbent disposed between the two sheets.
- the absorbent body has an absorbent core containing an absorbent polymer;
- the absorbent core includes longitudinal grooves extending in the longitudinal direction of the absorbent article, transverse grooves extending in the lateral direction of the absorbent article, and the longitudinal grooves and the respective sections of the transverse grooves at the sections defined by the longitudinal grooves and the transverse grooves.
- the longitudinal groove and the transverse groove have the same thickness or the transverse groove is thinner, and the width of the transverse groove is wider than the width of the longitudinal groove in plan view.
- the skin opposing surface side is flat, and the raised part which protruded toward the non-skin opposing surface side from the surface sheet side toward the back surface sheet side, and became depressed toward the surface sheet side from the back surface sheet side.
- the absorbent core includes the block-shaped region and a non-block region disposed over the outer periphery of the block-shaped region, and the entire width in the ventral side is the entire back side.
- the absorbent body includes the absorbent core and a coating material that wraps the absorbent core, and the coating material and the non-skin facing surface of the absorbent core are joined by a non-skin-side absorbent adhesive.
- the non-skin-side absorbent adhesive is applied intermittently in the transverse direction of the absorbent article and in a straight line in the longitudinal direction, according to any one of ⁇ 1> to ⁇ 3> Absorbent article.
- ⁇ 5> The absorbent article according to any one of ⁇ 1> to ⁇ 4>, wherein the absorbent core has a pulp single-layer formed on the most non-skin facing surface side.
- the surface sheet has a plurality of convex portions convex to the skin facing surface side and concave portions adjacent to the convex portion, and the skin facing surface side of the surface sheet has a concavo-convex structure.
- ⁇ 7> The absorbent article according to any one of ⁇ 1> to ⁇ 6>, wherein a hydrophilic intermediate sheet is disposed between the absorbent body and the top sheet.
- the absorbent article has left and right side edges on the abdominal side and left and right side edges on the back side extending laterally outward from the left and right side edges of the crotch part, and the left and right side edges of the crotch part are sideways.
- a sheet for forming a three-dimensional gather having an elastic member fixed in an extended state in the longitudinal direction is disposed on and fixed to a side portion of the top sheet on each side portion along the longitudinal direction of the absorbent article.
- a pair of three-dimensional gathers are formed, and a plurality of leg elastic members for leg gather formation are arranged in an elongated state in the longitudinal direction on each side part along the longitudinal direction of the absorbent article, A leg gather is formed by contraction of the leg elastic member, and a waist elastic member for forming a waist gather is arranged in a laterally extended state at a longitudinal end on the back side of the absorbent article.
- the absorbent body is formed by coating the absorbent core having a long liquid retention property with the coating material that is a liquid-permeable hydrophilic sheet. Goods.
- the block-shaped region of the absorbent core is formed in a lattice shape as a whole by the horizontal groove and the vertical groove, and each of the regions partitioned by the linear horizontal groove and the vertical groove,
- the absorbent core has a low basis weight portion composed of the horizontal groove and the longitudinal groove, and the high basis weight portion and the low basis weight portion of the absorbent core are integrally formed,
- the low basis weight portion is unevenly distributed on the topsheet side in the thickness direction of the absorbent article, and the absorbent core is flat on the topsheet side.
- ⁇ 14> The absorbent article according to any one of ⁇ 1> to ⁇ 13>, wherein the absorbent core has a total length in the vertical direction of 250 mm to 550 mm and a total width in the horizontal direction of 50 mm to 200 mm.
- the block-shaped region has a length in the vertical direction of 70% or more and 98% or less of the entire length of the absorbent core in the vertical direction, or a length of 85% or more and 95% or less.
- the absorbent article according to any one of ⁇ 1> to ⁇ 14>, wherein ⁇ 16> The block shape region has a length in the lateral direction of 30% or more and 90% or less of the entire width in the lateral direction of the absorbent core, or a length of 50% or more and 70% or less.
- the absorbent article according to any one of ⁇ 1> to ⁇ 15>, wherein ⁇ 17> The absorbent article according to any one of ⁇ 1> to ⁇ 16>, wherein the block-shaped region has a total length in the vertical direction of 100 mm to 540 mm and a total width in the horizontal direction of 20 mm to 140 mm.
- the lateral lengths of both side portions along the vertical direction are 10 mm or more and 40 mm or less at the ventral side part A, 10 mm or more and 30 mm or less at the crotch part,
- the high basis weight portion is formed in a rectangular shape in plan view, has four corners in an arc shape, or has a polygonal shape, an ellipse, or a combination thereof.
- the width of the horizontal groove is wider than the width of the vertical groove, and the width of the horizontal groove / the width of the vertical groove is 1
- the width of the lateral groove is 2% or more and 25% or less of the length in the longitudinal direction of the high basis weight part, or 5% or more and 20% or less.
- the width of the longitudinal groove is 2% or more and 30% or less of the lateral length of the high basis weight part, or 10% or more and 25% or less.
- the transverse groove and the longitudinal groove are formed with the same thickness, and the thickness of the low basis weight portion is 30% or more and 90% or less of the thickness of the high basis weight portion 43.
- ⁇ 12 The absorbent article according to any one of> to ⁇ 23>.
- ⁇ 25> The ⁇ 12> to ⁇ 24, wherein the low basis weight part has a basis weight of 20% to 80% or 30% to 70% of the basis weight of the high basis weight part. > Any one of>.
- the high basis weight part and the non-blocking region are either the same as or higher in density than the low basis weight part, and any one of the items ⁇ 12> to ⁇ 25>
- the low basis weight part has a density of 50% or more and 100% or less of the density of the high basis weight part, or 75% or more and 95% or less of any one of ⁇ 12> to ⁇ 26>
- ⁇ 28> The absorbent article according to any one of ⁇ 12> to ⁇ 27>, wherein a space is formed between the low basis weight portion of the absorbent core and the covering material.
- ⁇ 29> Any one of the above ⁇ 7> to ⁇ 28>, wherein the intermediate sheet having a rectangular shape that is long in the longitudinal direction is disposed between the top sheet and the covering material that constitutes the absorber. Absorbent article. ⁇ 30> The intermediate sheet is a sub-layer sheet, and is arranged from the abdominal side part to the back side part so as to cover the absorbent core constituting the absorbent body.
- a sheet mainly composed of hydrophilic fibers (sheet having a hydrophilic fiber content of preferably 90% by mass or more) is used.
- Example 1 The absorber 4 was manufactured using the apparatus shown in FIG. 7, and the disposable diaper 1 shown in FIG. 2 was produced.
- the surface sheet 2 will be described in detail.
- the surface sheet the surface sheet having the same structure as the two-layered uneven surface sheet shown in FIG. 4 is used.
- the basis weight is 18 g / m. using 2 of liquid-permeable air-through nonwoven fabric, for upper layer used was imparted irregularities by embossing to the air-through nonwoven fabric.
- the basis weight of the upper layer after providing the irregularities was 23.5 g / m 2 .
- the convex portions 21 and the joint portions 25 are arranged in a staggered pattern, the height h of the convex portions 21 is 1.1 mm, and the bottom dimension of the convex portions 21 along the Y direction.
- L1 was 2.5 mm
- the bottom part dimension L2 of the convex part 21 along the X direction was 3.0 mm
- the bottom area of the convex part 21 was 7.5 mm 2 .
- the length L3 in the X direction and the length in the Y direction of the joint portion 25 of the concave portion 22 were 1.0 mm.
- the block-shaped region 411 of the absorbent core 41 has a total length in the Y direction of 332 mm and a total width in the X direction of 50 mm.
- the non-blocking region 412 of the absorbent core 41 has a Y direction length of 370 mm at the end in the Y direction, a length of the side of the ventral side A in the X direction of 120 mm, and the crotch C side.
- the length in the X direction of the portion was 70 mm, and the length in the X direction of the side portion of the back side portion B was 100 mm.
- the length L4 in the Y direction of the high basis weight portion 43 constituting the block shape region 411 was 20 mm, and the length L5 in the X direction was 10 mm.
- the width L6 of the horizontal groove 44X constituting the block-shaped region 411 was 2.2 mm, and the width L7 of the vertical groove 44Y was 2 mm.
- the basis weight of the low basis weight portion 44 (horizontal groove 44X, longitudinal groove 44Y) constituting the block shape region 411 is 292 g / m 2 , and each of the high basis weight portion 43 and the non-block region 412 constituting the block shape region 411 is provided.
- the basis weight was 570 g / m 2 .
- Example 2 is the disposable of Example 2 except that the width L6 of the horizontal groove 44X constituting the block-shaped region 411 is 2.5 mm and the width L7 of the vertical groove 44Y is 2 mm. A diaper was made.
- Comparative Example 1 As for the absorbent core 41 of the absorbent body 4, the comparative example is the same as in Example 1 except that the width L 6 of the horizontal groove 44 X constituting the block-shaped region 411 is 1 mm and the width L 7 of the vertical groove 44 Y is 2 mm.
- One disposable diaper was prepared.
- the disposable diapers of Examples 1 and 2 have a shorter absorption time (seconds) and a wider diffusion area (cm 2 ) than the disposable diapers of Comparative Example 1. It was. Thus, compared with the disposable diaper of the comparative example 1, the disposable diaper of Example 1, 2 is estimated that the absorption capacity of the wide range of the absorber 4 can be utilized efficiently.
- body fluid can be efficiently diffused over a wide range of the absorber, and the absorption capacity of the wide range of the absorber can be efficiently utilized.
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- Health & Medical Sciences (AREA)
- Epidemiology (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Vascular Medicine (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Absorbent Articles And Supports Therefor (AREA)
Abstract
Description
(Y方向)中央部に位置している。尚、縦方向(Y方向)に直交する方向を、おむつ1の横方向(以下「X方向」ともいう。)として説明する。
本明細書において、「肌対向面」とは、おむつ1を構成する表面シート2などの各部材の表裏両面のうち、着用時に着用者の肌側に配される面であり、「非肌対向面」とは、表面シート2などの各部材の表裏両面のうち、着用時に着用者の肌側とは反対側に向けられる面である。
ブロック形状領域411は、その縦方向(Y方向)の長さが、吸収性コア41のY方向の全長の、70%以上、好ましくは85%以上の長さ、そして、98%以下、好ましくは95%以下の長さ、より具体的には、70%以上98%以下の長さであることが好ましく、85%以上95%以下の長さであることが更に好ましい。
ブロック形状領域411は、その横方向(X方向)の長さが、吸収性コア41のX方向の全幅の、30%以上、好ましくは50%以上の長さ、そして、90%以下、好ましくは70%以下の長さ、より具体的には、30%以上90%以下の長さであることが好ましく、50%以上70%以下の長さであることが更に好ましい。
ブロック形状領域411は、使い捨ておむつに用いられる場合においては、縦方向(Y方向)の全長が100mm以上540mm以下であり、横方向(X方向)の全幅が20mm以上140mm以下であることが好ましい。
非ブロック領域412は、使い捨ておむつに用いられる場合においては、縦方向(Y方向)の両端部それぞれの縦方向(Y方向)の長さが、10mm以上150mm以下であることが好ましい。
非ブロック領域412は、使い捨ておむつに用いられる場合においては、縦方向(Y方向)に沿う両側部それぞれの横方向(X方向)の長さが、腹側部Aでは10mm以上40mm以下であることが好ましく、股下部Cでは10mm以上30mm以下であることが好ましく、背側部Bでは10mm以上40mm以下であることが好ましい。
高坪量部43は、おむつ1においては、図2に示すように、平面視して、縦方向(Y方向)に長い矩形状に形成されている。尚、おむつ1においては、高坪量部43を平面視して、矩形状に形成されているが、四隅が円弧状となっていてもよく、多角形状、楕円、それらの組み合わせ等であってもよい。
おむつ1の高坪量部43は、吸収性物品が例えば使い捨ておむつに用いられる場合においては、図6に示すように、その縦方向(Y方向)の長さL4が、5mm以上、好ましくは15mm以上、そして、30mm以下、好ましくは25mm以下、より具体的には、5mm以上30mm以下であることが好ましく、15mm以上25mm以下であることが更に好ましい。また、その横方向(X方向)の長さL5が、3mm以上、好ましくは5mm以上、そして、20mm以下、好ましくは15mm以下、より具体的には、3mm以上20mm以下であることが好ましく、5mm以上15mm以下であることが更に好ましい。
横方向(X方向)に延びる線状の横溝44Xの幅L6は、高坪量部43の縦方向(Y方向)の長さ(L4)の、2%以上、好ましくは5%以上の長さ、そして、25%以下、好ましくは20%以下の長さ、より具体的には、2%以上25%以下の長さであることが好ましく、5%以上20%以下の長さであることが更に好ましい。
縦方向(Y方向)に延びる線状の縦溝44Yの幅L7は、高坪量部43の横方向(X方向)の長さL5の、2%以上、好ましくは10%以上の長さ、そして、30%以下、好ましくは25%以下の長さ、より具体的には、2%以上30%以下の長さであることが好ましく、10%以上25%以下の長さであることが更に好ましい。
横方向(X方向)に延びる線状の横溝44Xの幅L6は、吸収性物品が例えば使い捨ておむつに用いられる場合においては、0.5mm以上、好ましくは1mm以上、そして、5mm以下、好ましくは3mm以下、より具体的には、0.5mm以上5mm以下であることが好ましく、1mm以上3mm以下であることが更に好ましい。
縦方向(Y方向)に延びる線状の縦溝44Yの幅L7は、吸収性物品が例えば使い捨ておむつに用いられる場合においては、0.01mm以上、好ましくは0.02mm以上、そして、4.6mm以下、好ましくは2.8mm以下、より具体的には、0.01mm以上4.6mm以下であることが好ましく、0.02mm以上2.8mm以下であることが更に好ましい。
尚、幅L4,L5は、吸収体4における窪み部(低坪量部44(横溝44X,縦溝44Y))の底部の位置での測定値である。
尚、高坪量部43、低坪量部44(横溝44X,縦溝44Y)及び非ブロック領域412の厚みは、所定のサイズにサンプルをカットし、5kPaで測定部位を10分間加圧し、除重後すぐに測定を行う。測定箇所は、1枚辺り腹側部、股間部、背側部の任意それぞれ1点以上を含む3点以上とし、おむつサンプル2枚(測定箇所6点以上)の平均で厚みを出す。例えばおむつ1を、鋭利なかみそりで、図2に示す縦方向(Y方向)、又は横方向(X方向)に切断し、この切断されたサンプルの断面を測定する。高坪量部43及び非ブロック領域412の厚みは凸部の中で最も厚い位置で測定した値であり、低坪量部44(横溝44X,縦溝44Y)の厚みは凹部の底部の中で最も薄い位置で測定した値である。肉眼にて測定し難い場合には、前記切断されたサンプルの断面を、例えば、マイクロスコープ(KEYENCE社製VHX-1000)を用いて20~50倍の倍率で観察し、測定してもよい。
具体的には、低坪量部44(横溝44X,縦溝44Y)は、その坪量が、100g/m2以上、好ましくは150g/m2以上、そして、500g/m2以下、好ましくは400g/m2以下、より具体的には、100g/m2以上500g/m2以下であることが好ましく、150g/m2以上400g/m2以下であることが更に好ましい。また、高坪量部43は、その坪量が、300g/m2以上、好ましくは350g/m2以上、そして、900g/m2以下、好ましくは800g/m2以下、より具体的には、300g/m2以上900g/m2以下であることが好ましく、350g/m2以上800g/m2以下であることが更に好ましい。非ブロック領域412の坪量は、高坪量部41の坪量と同様である。
高坪量部43及び低坪量部44(横溝44X,縦溝44Y)の坪量は次のようにして測定される。
高坪量部43、低坪量部44(横溝44X,縦溝44Y)及び非ブロック領域412の坪量の測定方法は以下の通りである。
吸収性コア41における高坪量部43と低坪量部44(横溝44X,縦溝44Y)の境界線に沿ってフェザー社製片刃剃刀を用いて切断する。切断して得られた高坪量部43の小片10個をそれぞれ電子天秤(A&D社製電子天秤GR-300、精度:小数点以下4桁)を用いて測定し、高坪量部43の小片1個の平均重量を求める。求めた平均重量を高坪量部43の小片1個当りの平均面積で除して高坪量部43の坪量を算出する。非ブロック領域412の坪量も高坪量部43の坪量と同様にして算出する。
次いで、高坪量部43と低坪量部44(縦溝44Y)の縦方向(Y方向)に延びた境界線に沿って、長さ100mm、幅は低坪量部44(縦溝44Y)の幅の設計寸法に合わせて、フェザー社製片刃剃刀を用いて、細いストライプ状の低坪量部44(縦溝44Y)の小片5個を切り出す。得られた小片5個をそれぞれ電子天秤(A&D社製電子天秤GR-300、精度:小数点以下4桁)を用いて測定し、平均して低坪量部44(縦溝44Y)の小片1個の平均重量を求める。求めた平均重量を低坪量部44(縦溝44Y)の小片1個当たりの平均面積で除して低坪量部44(縦溝44Y)の坪量を算出する。低坪量部44(横溝44X)についても、低坪量部44(縦溝44Y)と同様にして坪量を算出する。
低坪量部44(横溝44X,縦溝44Y)は、吸収性物品が例えば使い捨ておむつに用いられる場合においては、液拡散や吸収体の屈曲性やフィット性の観点から、その密度が、高坪量部43の密度の、50%以上、好ましくは75%以上、そして、100%以下、好ましくは95%以下、より具体的には、50%以上100%以下であることが好ましく、75%以上95%以下であることが更に好ましい。
具体的には、低坪量部44(横溝44X,縦溝44Y)は、その密度が、0.05g/cm3以上、好ましくは0.07g/cm3以上、そして、0.15g/cm3以下、好ましくは0.13g/cm3以下、より具体的には、0.05g/cm3以上0.15g/cm3以下であることが好ましく、0.07g/cm3以上0.13g/cm3以下であることが更に好ましい。また、高坪量部43は、その密度が、0.05g/cm3以上、好ましくは0.07g/cm3以上、そして、0.15g/cm3以下、好ましくは0.13g/cm3以下、より具体的には、0.05g/cm3以上0.15g/cm3以下であることが好ましく、0.07g/cm3以上0.13g/cm3以下であることが更に好ましい。非ブロック領域412の密度は、高坪量部41の密度と同様である。
高坪量部43、非ブロック領域412及び低坪量部44(横溝44X,縦溝44Y)の密度は、上述した方法により求めた高坪量部43、非ブロック領域412及び低密度部44の坪量を、上述した方法により求めたそれぞれの厚みで除して算出される。
図7には、吸収体4の製造方法の一実施態様及びそれに用いる製造装置が示されている。吸収体4の製造装置は、矢印R1方向に回転駆動される回転ドラム50と、回転ドラム50の外周面に吸収性コア41の原料である吸収ポリマーを含む吸収性材料45を供給するダクト60と、回転ドラム50の下流側の斜め下方に配置され、矢印R2方向に回転駆動されるトランスファーロール70と、回転ドラム50の周方向におけるダクト60とトランスファーロール70との間に配置されたバキュームボックス65と、バキュームボックス65と回転ドラム50との間及びトランスファーロール70と回転ドラム50との間を通るように配された、シート状の通気性部材であるメッシュベルト75と、トランスファーロール70の下方に配されたバキュームコンベア80とを備えている。
先ず、回転ドラム50内の空間56、及びバキュームボックス65内を、それぞれに接続された排気装置を作動させて負圧にする。このように、空間56内を負圧にすることで、ダクト60内に、吸収性材料45を回転ドラム50の外周面に搬送させる空気流が生じるからである。次に、回転ドラム50及びトランスファーロール70を回転させ、また、バキュームコンベア80を作動させる。そして、前記繊維材料導入装置を作動させて、ダクト60内に、先ず解繊したパルプ(繊維材料)を供給する。パルプ(繊維材料)は、ダクト60内を流れる空気流に乗り、飛散状態となって回転ドラム50の外周面に向けて供給される。
裏面シート3、立体ギャザー形成用シート62としては、通常、使い捨ておむつ等の吸収性物品に用いられるものであれば、特に制限なく用いることができる。例えば、裏面シート3としては、樹脂フィルムや樹脂フィルムと不織布の積層体等を用いることができる。立体ギャザー形成用シート62としては、伸縮性のフィルム、不織布、織物またはそれらの積層シート等を用いることができる。
ファスニングテープ7としては、通常、使い捨ておむつ等の吸収性物品に用いられるものであれば、特に制限なく用いることができる。例えば、「マジックテープ(登録商標)」(クラレ社製)、「クイックロン(登録商標)」(YKK社製)、「マジクロス(登録商標)」(カネボウベルタッチ社製)等におけるオス部材等を用いることができる。
立体ギャザー形成用の弾性部材61、レッグ弾性部材63、及びウエスト部弾性部材64としては、天然ゴム、ポリウレタン、ポリスチレン-ポリイソプレン共重合体、ポリスチレン-ポリブタジエン共重合体、アクリル酸エチル-エチレン等のポリエチレン-αオレフィン共重合体等からなる糸状の伸縮性材料を用いることができる。
おむつ1は、図2,図3に示すように、横溝44X,縦溝44Yと、横溝44X,縦溝44Yで区画された部位に配された縦方向(Y方向)に長い高坪量部43とからなるブロック形状領域411を有している。このような縦方向(Y方向)に長い高坪量部43を有する吸収性コア41を用いているので、おむつ1の着用中に着用者が排泄すると、体液が縦方向(Y方向)に流れ易い。そして、おむつ1が有する吸収体4の吸収性コア41は、図2,図3に示すように、横溝44X及び縦溝44Yの厚みが同じか、若しくは縦溝44Yより横溝44Xの方が薄く、平面視して、横溝44Xの幅が縦溝44Yの幅よりも広くなっているので、図10に示すように、体液が縦溝44Yよりも横溝44Xに沿って流れ易い。このように、図10に示すように、ブロック形状領域411の縦方向(Y方向)に長い高坪量部43によって体液が縦方向(Y方向)に流れ易く、更に、横溝44Xによって横溝44Xに沿って体液が横方向(X方向)に流れ易くなり、吸収体4の広い範囲に体液を効率よく拡散させることができる。従って、吸収体4の広い範囲の吸収容量を効率よく活用することができる。特に、おむつ1においては、図3に示すように、吸収性コア41は、肌対向面側が平坦であり非肌対向面側が表面シート2側から裏面シート3側に向けて隆起した隆起部と裏面シート3側から表面シート2側に向けて窪んだ窪み部が形成されているので、上記効果が更に奏される。
また、おむつ1は、図3に示すように、表面シート2が、肌対向面側に凸の多数の凸部21と凸部21に隣接する凹部22とを有し、表面シート2の肌対向面側が凹凸構造となっている。そのため、着用中に着用者が排泄した後も着用者の肌と表面シート2との間に隙間ができ、通気性が向上し肌触りが向上する。
また、おむつ1は、図3に示すように、中間シート5(サブレイヤーシート)が、表面シート2と被覆材42との間に配されているので、吸収体4に液をスムーズに移行するとの効果を奏する。
また、上述の実施形態の使い捨ておむつ1においては、図3に示すように、吸収体4と表面シート2との間に親水性の中間シート5が配されているが、中間シート5が配されていなくてもよい。
<1>肌対向面側に配された表面シートと、非肌対向面側に配された裏面シートと、これら両シート間に配された縦長の吸収体とを備えた吸収性物品であって、
前記吸収体は、吸収ポリマーを含む吸収性コアを有し、
前記吸収性コアは、吸収性物品の縦方向に延びる縦溝と、吸収性物品の横方向に延びる横溝と、該縦溝及び該横溝で区画された部位に該縦溝及び該横溝それぞれの部位より坪量の高い複数の縦長の高坪量部とからなるブロック形状領域を有しており、
前記吸収性コアの前記高坪量部と、前記横溝及び前記縦溝それぞれに位置する部位からなる低坪量部とは一体成形されており、
前記縦溝と前記横溝とは、厚みが同じか若しくは該横溝の方が薄く、平面視して、該横溝の幅が該縦溝の幅より広い吸収性物品。
<3>前記吸収性コアは、前記ブロック形状領域と、該ブロック形状領域の外周に亘って配された非ブロック領域とを有しており、腹側部における全体の幅が背側部における全体の幅と同じであり、前記ブロック形状領域の幅が腹側部と背側部とで同じである前記<1>又は<2>記載の吸収性物品。
<4>前記吸収体は、前記吸収性コアと該吸収性コアを包む被覆材とを有し、該被覆材と前記吸収性コアの非肌対向面とが非肌側吸収体接着剤により接合されており、該非肌側吸収体接着剤は、前記吸収性物品の横方向に間欠的に且つ縦方向に一直線状に塗工されている前記<1>~<3>の何れか1記載の吸収性物品。
<5>前記吸収性コアは、最も非肌対向面側に、パルプ単体の層が形成されている前記<1>~<4>の何れか1記載の吸収性物品。
<6>前記表面シートは、肌対向面側に凸の多数の凸部と該凸部に隣接する凹部とを有し、該表面シートの肌対向面側が凹凸構造となっている前記<1>~<5>の何れか1記載の吸収性物品。
<7>前記吸収体と前記表面シートとの間に親水性の中間シートが配されている前記<1>~<6>の何れか1記載の吸収性物品。
<8>前記吸収性物品は、腹側部の左右両側縁及び背側部の左右両側縁それぞれが股下部の左右両側縁よりも横方向外方に延出し、股下部の左右両側縁が横方向内方に向かって円弧状に湾曲しており、全体として縦方向中央部が内方に括れた形状を有しており、前記表面シート及び前記裏面シートは、それぞれ、前記吸収体の左右両側縁及び前後両端縁から外方に延出しており、該表面シートは、その横方向の寸法が、該裏面シートの横方向の寸法より小さくなっている前記<1>~<7>の何れか1記載の吸収性物品。
<9>前記吸収性物品の縦方向に沿う両側部それぞれには、縦方向に伸長状態で固定された弾性部材を有する立体ギャザー形成用シートが、前記表面シートの側部に配され固定されており、これによって一対の立体ギャザーが形成され、該吸収性物品の縦方向に沿う両側部それぞれには、レッグギャザー形成用の複数本のレッグ弾性部材が縦方向に伸長状態に配されており、該レッグ弾性部材の収縮によりレッグギャザーが形成され、該吸収性物品の背側部側の縦方向端部には、ウエストギャザー形成用のウエスト部弾性部材が横方向に伸長状態に配されており、該ウエスト部弾性部材の収縮によりウエストギャザーが形成される前記<1>~<8>の何れか1記載の吸収性物品。
<10>前記吸収体は、縦方向に長い液保持性の前記吸収性コアを、液透過性の親水性シートである前記被覆材で被覆して形成されている前記<4>記載の吸収性物品。
<12>前記吸収性コアは、前記横溝と前記縦溝とからなる低坪量部を有し、前記吸収性コアの前記高坪量部及び該低坪量部は一体成形されており、前記非ブロック領域も該高坪量部及び該低坪量部と一体成形されている前記<3>~<11>の何れか1記載の吸収性物品。
<13>前記吸収性コアは、前記低坪量部が、前記吸収性物品の厚み方向において、前記表面シート側に偏在しており、該吸収性コアは、その該表面シート側が、平坦となっている前記<12>記載の吸収性物品。
<14>前記吸収性コアは、縦方向の全長が250mm以上550mm以下であり、横方向の全幅が50mm以上200mm以下である前記<1>~<13>の何れか1記載の吸収性物品。
<15>前記ブロック形状領域は、その縦方向の長さが、前記吸収性コアの縦方向の全長の70%以上98%以下の長さであるか、又は85%以上95%以下の長さである前記<1>~<14>の何れか1記載の吸収性物品。
<16>前記ブロック形状領域は、その横方向の長さが、前記吸収性コアの横方向の全幅の30%以上90%以下の長さであるか、又は50%以上70%以下の長さである前記<1>~<15>の何れか1記載の吸収性物品。
<17>前記ブロック形状領域は、縦方向の全長が100mm以上540mm以下であり、横方向の全幅が20mm以上140mm以下である前記<1>~<16>の何れか1記載の吸収性物品。
<18>前記非ブロック領域は、縦方向の両端部それぞれの縦方向の長さが、10mm以上150mm以下である前記<3>~<17>の何れか1記載の吸収性物品。
<19>前記非ブロック領域は、縦方向に沿う両側部それぞれの横方向の長さが、腹側部Aでは10mm以上40mm以下であり、股下部では10mm以上30mm以下であり、背側部では10mm以上40mm以下である前記<3>~<18>の何れか1記載の吸収性物品。
<20>前記高坪量部は、平面視して、矩形状に形成されているか、四隅が円弧状となっているか、若しくは多角形状、楕円、又はそれらの組み合わせである前記<1>~<19>の何れか1記載の吸収性物品。
10%以上500%以下の広さであるか、又は120%以上300%以下の広さである前記<1>~<20>の何れか1記載の吸収性物品。
<22>前記横溝の幅は、前記高坪量部の縦方向の長さの2%以上25%以下の長さであるか、又は5%以上20%以下の長さである前記<1>~<21>の何れか1記載の吸収性物品。
<23>前記縦溝の幅は、前記高坪量部の横方向の長さの2%以上30%以下の長さであるか、又は10%以上25%以下の長さである前記<1>~<22>の何れか1記載の吸収性物品。
<24>前記横溝と前記縦溝とは、同じ厚みで形成されており、前記低坪量部の厚さは、前記高坪量部43の厚みの30%以上90%以下である前記<12>~<23>の何れか1記載の吸収性物品。
<25>前記低坪量部は、その坪量が、前記高坪量部の坪量の20%以上80%以下であるか、又は30%以上70%以下である前記<12>~<24>の何れか1記載の吸収性物品。
<26>前記吸収体においては、前記高坪量部及び前記非ブロック領域は、前記低坪量部に比して同じかもしくは高密度に形成されている前記<12>~<25>の何れか1記載の吸収性物品。
<27>前記低坪量部は、その密度が、前記高坪量部の密度の50%以上100%以下であるか、75%以上95%以下である前記<12>~<26>の何れか1記載の吸収性物品。
<28>前記吸収性コアの前記低坪量部と前記被覆材との間に空間が形成されている前記<12>~<27>の何れか1記載の吸収性物品。
<29>前記表面シートと前記吸収体を構成する前記被覆材との間に、縦方向に長い矩形状の前記中間シートが配されている前記<7>~<28>の何れか1記載の吸収性物品。<30>前記中間シートは、サブレイヤーシートであり、前記吸収体を構成する前記吸収性コアを覆うように、腹側部から背側部に亘って配されており、該中間シートは、その坪量が15g/m2以上100g/m2以下である前記<7>~<29>の何れか1記載の吸収性物品。
<32>前記吸収性物品は、展開型の使い捨ておむつである前記<1>~<31>の何れか1記載の吸収性物品。
<33>前記吸収性物品は、パンツ型使い捨ておむつ前記<1>~<31>の何れか1記載の吸収性物品。
図7に示す装置を用いて吸収体4を製造し、図2に示す使い捨ておむつ1を作製した。表面シート2について詳述すると、表面シートとしては、図4に示す2層構成の凹凸表面シートと概ね同様の構成のものを用い、該表面シートの上層及び下層として、それぞれ、坪量18g/m2の液透過性のエアースルー不織布を用い、該上層については、該エアースルー不織布にエンボス加工によって凹凸を付与したものを用いた。凹凸付与後の上層の坪量は23.5g/m2であった。表面シートは、凸部21及び接合部25(凹部22)が千鳥格子状に配されており、凸部21の高さhは1.1mmであり、Y方向に沿う凸部21の底部寸法L1は2.5mmであり、X方向に沿う凸部21の底部寸法L2は3.0mmであり、凸部21の底面積は7.5mm2であった。また、凹部22の接合部25のX方向への長さL3及びY方向への長さは1.0mmであった。
[実施例2]
実施例2は、ブロック形状領域411を構成する横溝44Xの幅L6が2.5mmであり、縦溝44Yの幅L7が2mmである以外は、実施例1と同様にして、実施例2の使い捨ておむつを作製した。
吸収体4の吸収性コア41に関し、ブロック形状領域411を構成する横溝44Xの幅L6は1mmであり、縦溝44Yの幅L7は2mmである以外は、実施例1と同様にして、比較例1の使い捨ておむつを作製した。
実施例1~2、比較例1の使い捨ておむつに関し、下記方法に従って、吸収時間と拡散面積を測定した。評価環境は室温20℃、湿度60%RHであった。それらの測定結果を下記表1に示す。
実施例1~2、比較例1で得られた使い捨ておむつについて、吸収性コア41のブロック形状領域411に対応するように、表面シートと円筒(内径19.5mmで、吸収体に接触する上部10mm部分は内径10mm)の先端部とを接触させ、垂直に該円筒を立てる。次いで、垂直に立てた円筒の周りの表面シート上に21.6g/cm2の荷重が加わるようおもりを載せる。次いで、円筒の他端部側から生理食塩水(0.9重量%塩化ナトリウム水)を30g供給し、供給した生理食塩水が円筒内の表面材から見えなくなるまでの吸収時間(秒)を測定し、更に、生理食塩水供給後10分後の拡散面積(cm2)を測定した。尚、各おむつについて3サンプル測定し、測定された値の平均値を求め、表1に示した。
Claims (7)
- 肌対向面側に配された表面シートと、非肌対向面側に配された裏面シートと、これら両シート間に配された縦長の吸収体とを備えた吸収性物品であって、
前記吸収体は、吸収ポリマーを含む吸収性コアを有し、
前記吸収性コアは、吸収性物品の縦方向に延びる縦溝と、吸収性物品の横方向に延びる横溝と、該縦溝及び該横溝で区画された部位に該縦溝及び該横溝それぞれの部位より坪量の高い複数の縦長の高坪量部とからなるブロック形状領域を有しており、
前記吸収性コアの前記高坪量部と、前記横溝及び前記縦溝それぞれに位置する部位からなる低坪量部とは一体成形されており、
前記縦溝と前記横溝とは、厚みが同じか若しくは該横溝の方が薄く、平面視して、該横溝の幅が該縦溝の幅より広い吸収性物品。 - 前記吸収性コアは、肌対向面側が平坦であり、非肌対向面側に表面シート側から裏面シート側に向けて隆起した隆起部と裏面シート側から表面シート側に向けて窪んだ窪み部とが形成されている請求項1記載の吸収性物品。
- 前記吸収性コアは、前記ブロック形状領域と、該ブロック形状領域の外周に亘って配された非ブロック領域を有しており、腹側部における全体の幅が背側部における全体の幅と同じであり、前記ブロック形状領域の幅が腹側部と背側部とで同じである請求項1又は2記載の吸収性物品。
- 前記吸収体は、前記吸収性コアと該吸収性コアを包む被覆材とを有し、該被覆材と前記吸収性コアの非肌対向面とが非肌側吸収体接着剤により接合されており、該非肌側吸収体接着剤は、前記吸収性物品の横方向に間欠的に且つ縦方向に一直線状に塗工されている請求項1~3の何れか1項記載の吸収性物品。
- 前記吸収性コアは、最も非肌対向面側に、パルプ単体の層が形成されている請求項1~4の何れか1項記載の吸収性物品。
- 前記表面シートは、肌対向面側に凸の多数の凸部と該凸部に隣接する凹部とを有し、該表面シートの肌対向面側が凹凸構造となっている請求項1~5の何れか1項記載の吸収性物品。
- 前記吸収体と前記表面シートとの間に親水性の中間シートが配されている請求項1~6の何れか1項記載の吸収性物品。
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US10231883B2 (en) | 2015-01-23 | 2019-03-19 | Kimberly-Clark Worldwide, Inc. | Bridged absorbent structure |
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JP5800959B1 (ja) * | 2014-06-23 | 2015-10-28 | ユニ・チャーム株式会社 | 使い捨ておむつ |
JP6285812B2 (ja) * | 2014-06-30 | 2018-02-28 | ユニ・チャーム株式会社 | 使い捨ておむつ |
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JP6250719B2 (ja) | 2016-02-29 | 2017-12-20 | 大王製紙株式会社 | 使い捨ておむつ |
JP6320467B2 (ja) * | 2016-07-08 | 2018-05-09 | ユニ・チャーム株式会社 | 吸収性物品 |
JP6568182B2 (ja) | 2017-11-24 | 2019-08-28 | 大王製紙株式会社 | 吸収性物品 |
WO2019235427A1 (ja) * | 2018-06-05 | 2019-12-12 | 花王株式会社 | 吸収性物品 |
WO2020008610A1 (ja) * | 2018-07-05 | 2020-01-09 | 花王株式会社 | 吸収性物品 |
CN110179594A (zh) * | 2019-05-31 | 2019-08-30 | 重庆百亚卫生用品股份有限公司 | 一种吸收型芯体结构 |
JP7388868B2 (ja) * | 2019-10-17 | 2023-11-29 | 花王株式会社 | 吸収性物品 |
JP7424943B2 (ja) * | 2020-08-25 | 2024-01-30 | 花王株式会社 | 吸収性物品 |
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- 2013-05-31 WO PCT/JP2013/065268 patent/WO2013187260A1/ja active Application Filing
- 2013-05-31 CN CN201380028281.5A patent/CN104349759B/zh active Active
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TW201402097A (zh) | 2014-01-16 |
BR112014027238B1 (pt) | 2021-07-20 |
RU2014152702A (ru) | 2016-07-27 |
CN104349759B (zh) | 2017-12-26 |
CN104349759A (zh) | 2015-02-11 |
TWI566758B (zh) | 2017-01-21 |
JP6099239B2 (ja) | 2017-03-22 |
RU2631646C2 (ru) | 2017-09-25 |
JP2013255557A (ja) | 2013-12-26 |
BR112014027238A2 (pt) | 2017-06-27 |
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