WO2023112758A1 - 吸収性物品 - Google Patents
吸収性物品 Download PDFInfo
- Publication number
- WO2023112758A1 WO2023112758A1 PCT/JP2022/044784 JP2022044784W WO2023112758A1 WO 2023112758 A1 WO2023112758 A1 WO 2023112758A1 JP 2022044784 W JP2022044784 W JP 2022044784W WO 2023112758 A1 WO2023112758 A1 WO 2023112758A1
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- WO
- WIPO (PCT)
- Prior art keywords
- embossed
- thickness
- absorbent body
- absorbent article
- portions
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
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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
- A61F13/45—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape
- A61F13/49—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape specially adapted to be worn around the waist, e.g. diapers or nappies
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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
- A61F13/51—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the outer layers of the pads
- A61F13/511—Topsheet, i.e. the permeable cover or layer facing the skin
- A61F13/512—Topsheet, i.e. the permeable cover or layer facing the skin characterised by its apertures, e.g. perforations
-
- 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
-
- 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
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
- A61F13/53—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium
- A61F13/531—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having a homogeneous composition through the thickness of the pad
- A61F13/532—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having a homogeneous composition through the thickness of the pad inhomogeneous in the plane of the pad
- A61F13/533—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having a homogeneous composition through the thickness of the pad inhomogeneous in the plane of the pad having discontinuous areas of compression
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
- A61F13/53—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium
- A61F13/534—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 disclosure relates to absorbent articles.
- Absorbent articles such as disposable diapers and sanitary napkins are widely used.
- This type of absorbent article includes an absorbent body that absorbs body fluids of the wearer, such as urine and blood.
- Patent Literatures 1 and 2 below describe disposable diapers having absorbent bodies.
- the absorbers of these disposable diapers are embossed with grid-like grooves recessed from the wearer's skin side to the non-skin side. By forming such grooves on the surface of the absorber, shadows of the two-dimensional grooves appear on the surface of the absorber.
- Non-uniformity in the density of the absorbent body is increased between the formed part and the non-voided part. If the density of the absorbent body becomes non-uniform, the absorbent body may bend at the portion where the thickness is reduced due to compression, or the absorption of body fluids in the absorbent body may become non-uniform. On the other hand, if the depth of the voids formed in the absorber is made shallow in order to suppress the non-uniformity of the density of the absorber, it becomes difficult to form clear shadows of the voids on the surface of the absorber.
- an object of the present disclosure is to provide an absorbent article capable of forming clear shadows of voids on the surface of the absorbent body while suppressing non-uniformity in density.
- an absorbent article has a longitudinal direction connecting the wearer's ventral side and a dorsal side, and a width direction orthogonal to the longitudinal direction.
- One or a plurality of first embossed portions including surface protrusions protruding to the wearer's skin side and back recesses recessed to the wearer's skin side, surface recesses recessed to the wearer's non-skin side and the non-skin surface
- the absorber includes a second embossed portion including a rear convex portion protruding to the side, and the distance in the thickness direction of the absorber between the surface convex portion of the first embossed portion and the surface concave portion of the second embossed portion is defined as BW1.
- the surface convex portion of the first embossed portion of the absorber and the second embossed portion Since the distance BW1 in the thickness direction to the surface concave portion is increased, non-uniformity in the density of the absorber is suppressed, and a large gap is formed between the wearer's skin surface and the surface of the absorber for absorption. Clear shadows of voids can be formed on the skin side of the body.
- the difference between the thickness T1 of the first embossed portion and the thickness T2 of the second embossed portion may be 50% or less with respect to the thickness T1 of the first embossed portion. If there is a difference in the thickness of the absorbent body, the load may be concentrated on a portion with a small thickness, causing the absorbent body to bend. In this aspect, since the difference between the thickness T1 of the first embossed portion and the thickness T2 of the second embossed portion is small, the shape of the absorbent body is easily maintained.
- the absorbent body includes a central portion and both side portions arranged on both sides of the central portion in the width direction, and each of the central portion and the side portions includes a first embossed portion and a second embossed portion,
- the difference between the thickness T1 of the first embossed portion formed in the central portion and the thickness T2 of the second embossed portion formed in the central portion is the thickness T1 of the first embossed portion formed on both sides and the thickness T1 formed on both sides. It may be larger than the difference from the thickness T2 of the second embossed portion.
- the difference between the thickness T1 of the first embossed portion and the thickness T2 of the second embossed portion formed in the central portion is relatively large. It can be absorbed at speed.
- the difference between the thickness T1 of the first embossed portion and the thickness T2 of the second embossed portion formed in the central portion is relatively small, so that the wearer's bodily fluids can be uniformly absorbed. can be done.
- the absorbent body includes a central portion and both side portions arranged on both sides of the central portion in the width direction, and the thickness T1 of the first embossed portion formed in the central portion is the thickness T1 formed in the central portion. It may be larger than the thickness T2 of the second embossed portion. In this aspect, the rate of body fluid absorption by the central first embossed portion can be increased.
- the distance BW1 in the thickness direction between the surface convex portion of the first embossed portion and the surface concave portion of the second embossed portion is the thickness direction between the back concave portion of the first embossed portion and the back convex portion of the second embossed portion. It may be greater than the distance BW2. In this aspect, the gap formed between the wearer's skin surface and the recessed surface can be increased, so the breathability of the absorbent article 1 can be improved.
- the distance BW1 in the thickness direction between the surface convex portion of the first embossed portion and the surface concave portion of the second embossed portion, and the thickness direction between the back concave portion of the first embossed portion and the back convex portion of the second embossed portion may be 50% or less with respect to the distance BW1.
- clear void shadows can be formed on the skin surface side and the non-skin surface side of the absorbent body.
- the back concave portion of the first embossed portion may include a flat surface.
- the shadows of the voids on the non-skin surface side can be made clear.
- the absorbent body includes a plurality of first embossed portions arranged in a predetermined direction, and in a cross-sectional view along the predetermined direction, the back surface of the adjacent first embossed portion among the plurality of first embossed portions The distance between the recesses may be greater than the width of the surface recesses of the second embossments.
- the absorbent body includes a plurality of first embossed portions arranged in a predetermined direction, and the second embossed portions are formed along a lattice pattern when viewed from the skin surface side, and are arranged in a predetermined direction. In a cross-sectional view along the line, the distance between the surface recesses of the adjacent second embossed portions may be greater than the width of the back surface recesses of the first embossed portions.
- the absorbent body includes a core portion containing pulp fibers, and a core wrap covering the core portion, a portion of the core wrap is adhered to the core portion, and a region adhered to the core portion of the core wrap.
- the area may be larger than the area of the region of the core wrap that is not adhered to the core portion.
- it further comprises a first top sheet adhered to the absorbent body, and a second top sheet having higher rigidity than the first top sheet and adhered to the first top sheet from the skin surface side,
- the second topsheet may be adhered to the first topsheet such that a void is formed between the first topsheet and the second topsheet.
- the absorbent article of one mode may further comprise a first stretchable member arranged on the non-skin surface side of the absorber and extending in the longitudinal direction.
- the absorber contracts in the longitudinal direction as the first stretchable member contracts in the longitudinal direction, so that the shadows of the voids formed on the skin surface side of the absorber can be made clearer.
- the absorbent article of one aspect may further include a second stretchable member arranged on the non-skin surface side of the absorber and extending in the width direction.
- the absorbent body contracts in the width direction as the second stretchable member contracts in the width direction, so that the shadows of the voids formed on the skin surface side of the absorbent body can be made clearer.
- FIG. 1 is a perspective view schematically showing an absorbent article according to one embodiment
- FIG. 1 is a plan view of an absorbent article viewed from the skin surface side
- FIG. Fig. 2 is a plan view of the absorbent article viewed from the non-skin surface side
- FIG. 3 is a cross-sectional view of the absorbent article taken along line IV-IV of FIG. 2
- Fig. 2 is a plan view of the absorbent body viewed from the skin surface side
- Fig. 3 is a plan view of the absorbent body viewed from the non-skin surface side
- FIG. 6 is a cross-sectional view of the absorber along line VII-VII in FIG. 5; It is a top view which expands and shows a part of absorber. It is a top view which shows the modification of an absorber. It is a sectional view showing a modification of an absorber. It is a figure which shows roughly the modification of a 2nd embossing part.
- FIG. 1 is a perspective view of an absorbent article 1 according to one embodiment.
- 2 is a plan view of the absorbent article 1 viewed from the skin side Z1
- FIG. 3 is a plan view of the absorbent article 1 viewed from the non-skin side Z2.
- FIG. 4 is a cross-sectional view of the absorbent article 1 taken along line IV-IV of FIG.
- the absorbent article 1 shown in FIGS. 1-4 is a pants-type disposable diaper that absorbs the wearer's urine.
- the absorbent article 1 is not limited to a pants-type disposable diaper, and may be a tape-type disposable diaper, a pet disposable diaper, toilet training pants, a sanitary napkin, or the like.
- the absorbent article 1 is cut at the side ends 34 of the ventral waist portion 3 and the side ends 44 of the dorsal waist portion 4, which will be described later, and the absorbent article 1 is cut to a state where no wrinkles are formed.
- 1 shows the absorbent article 1 in a stretched state with 1 unfolded.
- the skin side Z1 is the side facing the wearer's skin when the absorbent article 1 is in use (wearing state)
- the non-skin side Z2 is the use state (wearing state) of the absorbent article 1. This is the side facing away from the wearer's skin when .
- a wearer is a subject who wears the absorbent article 1 . In the following description, the positional relationship in the extended state will be described unless otherwise specified.
- the absorbent article 1 extends in the width direction X and the longitudinal direction Y in the stretched state.
- the longitudinal direction Y is the direction extending between the abdomen and the back of the wearer when the absorbent article 1 is worn.
- the width direction X is a direction orthogonal to the longitudinal direction Y, and is a direction extending in the lateral direction of the wearer when the absorbent article 1 is worn.
- the thickness direction Z is a direction perpendicular to the width direction X and the longitudinal direction Y.
- one end side of the absorbent article 1 in the longitudinal direction Y may be referred to as the ventral side, and the other end side in the longitudinal direction Y may be referred to as the dorsal side.
- the absorbent article 1 includes a ventral waist portion 3, a back waist portion 4, and a body portion 10.
- the body portion 10 has a substantially rectangular planar shape elongated in the longitudinal direction Y of the absorbent article 1 .
- the main body 10 includes a ventral end 10a arranged at one end in the longitudinal direction Y, a dorsal end 10b arranged at the other end in the longitudinal direction Y, It includes a crotch portion 10c arranged in the longitudinal direction Y between the ventral end 10a and the dorsal end 10b.
- the ventral waist portion 3 is joined to the ventral side end portion 10a of the main body portion 10 from the non-skin surface side Z2.
- the back side waist portion 4 is joined to the back side end portion 10b of the body portion 10 from the non-skin side Z2.
- the main body portion 10 is folded in half so that the abdominal waist portion 3 and the back waist portion 4 face each other, and the side end portion 34 in the width direction X of the abdomen waist portion 3 and the back waist portion are separated.
- the ventral waist portion 3 and the back waist portion 4 are connected in a belt shape.
- the absorbent article 1 is formed into a pants type.
- the pants-type absorbent article 1 is formed with a waist opening BH through which the wearer's torso is passed, and a pair of leg openings LH through which the wearer's legs are passed.
- the abdominal waist portion 3 has a substantially rectangular planar shape whose longitudinal direction is the width direction X of the absorbent article 1, and is arranged on the non-skin surface side Z2 relative to the abdominal end portion 10a of the main body portion 10. ing.
- the abdominal waist portion 3 includes a skin sheet 31 arranged on the skin side Z1, a non-skin sheet 32 arranged on the non-skin side Z2, and a plurality of elastic members (second elastic members) 33. contains.
- the skin sheet 31 and the non-skin sheet 32 are, for example, an SMS nonwoven fabric, a spunbond nonwoven fabric, an air-through nonwoven fabric, a plastic sheet, a perforated plastic sheet, or a laminate of these nonwoven fabrics, in which spunbond, meltblown and spunbond are laminated in this order. etc.
- the skin sheet 31 and the non-skin sheet 32 are joined together with an adhesive such as hot melt.
- a plurality of stretchable members 33 are arranged at intervals in the longitudinal direction Y between the skin sheet 31 and the non-skin sheet 32 .
- the plurality of stretchable members 33 extend between side ends 34 in the width direction X of the ventral waist portion 3 . Therefore, the ventral waist portion 3 expands and contracts in the width direction X while fitting to the wearer's waist.
- the elastic member 33 is made of an elastic material such as rubber or spandex. As shown in FIG. 2, at least some of the plurality of stretchable members 33 extend across the width direction X of the absorber 13, which will be described later, when viewed from the skin surface side Z1.
- the dorsal waist portion 4 has a substantially rectangular planar shape elongated in the width direction X of the absorbent article 1 and is arranged on the non-skin surface side Z2 from the dorsal end portion 10b of the main body portion 10 .
- the back waist portion 4 includes a skin sheet 41 arranged on the skin side Z1, a non-skin sheet 42 arranged on the non-skin side Z2, and a plurality of elastic members (second elastic members) 43. contains.
- the skin sheet 41 and the non-skin sheet 42 are, for example, an SMS nonwoven fabric, a spunbond nonwoven fabric, an air-through nonwoven fabric, a plastic sheet, a perforated plastic sheet, or a laminate of these nonwoven fabrics, in which spunbond, meltblown and spunbond are laminated in order. etc.
- the skin sheet 41 and the non-skin sheet 42 are joined together with an adhesive such as hot melt.
- a plurality of stretchable members 43 are arranged at intervals in the longitudinal direction Y between the skin sheet 41 and the non-skin sheet 42 .
- the plurality of stretchable members 43 extend between side ends 44 in the width direction X of the back waist portion 4 . Therefore, the back side waist part 4 expands and contracts in the width direction X while fitting to the wearer's waist.
- the elastic member 43 is made of an elastic material such as rubber or spandex. As shown in FIG. 2, at least some of the plurality of stretchable members 43 extend across the width direction X of the absorber 13, which will be described later, when viewed from the skin surface side Z1.
- the body portion 10 includes a top sheet (first top sheet) 11, a back sheet 12 and an absorbent body 13.
- the top sheet 11 constitutes the surface of the body portion 10 that is brought into contact with the wearer, and is arranged on the skin surface side Z1.
- the top sheet 11 includes a center sheet 11a covering the absorber 13 and side sheets 11b covering both sides in the width direction X of the center sheet 11a.
- the center sheet 11a is made of, for example, water-permeable nonwoven fabric.
- the side sheet 11b is made of, for example, a water-impermeable nonwoven fabric. Both ends of the side sheet 11b in the longitudinal direction Y are joined to the center sheet 11a with a hot-melt adhesive or the like.
- Leakage prevention gathers 80 are formed on the side sheet 11b. Leakage-preventing gathers 80 are arranged outside in the width direction X of the absorbent body 13 and suppress leakage of urine excreted into the absorbent body 13 in the width direction X. As shown in FIG. In one embodiment, the leak-proof gathers 80 include a pair of stretchable members (first stretchable members) 71 extending in the longitudinal direction Y, a standing portion 81 standing by contraction of the pair of stretchable members 71, and It includes a horizontal fixing portion 82 that serves as an erecting fulcrum of the erecting portion 81 and a vertical fixing portion 83 that serves as an erecting fulcrum of the erecting portion 81 in the longitudinal direction Y. As shown in FIG.
- a pair of elastic members 71 are provided in the inner portion of the side seat 11b in the width direction X and extend in the longitudinal direction Y.
- the pair of elastic members 71 is, for example, thread rubber or flat rubber that can contract in the length direction.
- the pair of stretchable members 71 are spaced apart from each other across the center line CL in the width direction X of the main body 10, and are fixed to the side seat 11b while being stretched in the longitudinal direction Y.
- the ventral ends of the pair of stretchable members 71 are arranged at the ventral end 10a, and the dorsal ends of the pair of stretchable members 71 are arranged at the dorsal end 10b.
- the pair of elastic members 71 are arranged on the non-skin surface side Z2 of the absorbent body 13 .
- the lateral fixing portion 82 is formed in substantially the entire longitudinal direction Y of the main body portion 10 at a position outside the standing portion 81 in the width direction X of the side seat 11b.
- the lateral fixed portion 82 is a part of the side seat 11b and is fixed to the center seat 11a.
- the lateral fixing portion 82 serves as a standing fulcrum of the standing portion 81 in the width direction X. As shown in FIG.
- the vertical fixing part 83 is formed on the ventral side end part 10a and the dorsal side end part 10b at positions inside the horizontal fixing part 82 in the width direction X.
- the vertical fixed portion 83 is a part of the side seat 11b and is fixed to the center seat 11a.
- the vertical fixed portion 83 serves as an upright fulcrum of the upright portion 81 in the longitudinal direction Y. As shown in FIG.
- the standing portion 81 is formed between vertical fixing portions 83 respectively formed on the abdominal end portion 10a and the dorsal end portion 10b. That is, the upright portion 81 is arranged at a position inside the lateral fixing portion 82 in the width direction X and inside the longitudinal fixing portion 83 in the longitudinal direction Y. As shown in FIG.
- the standing portion 81 is a portion of the side seat 11b that is not fixed to the center seat 11a.
- An elastic member 71 elongated in the longitudinal direction Y is connected to the standing portion 81 .
- the expandable member 71 contracts in the longitudinal direction Y
- the body portion 10 is deformed in the closing direction, and the standing portion 81 rises with the horizontal fixing portion 82 as a starting point. Urinary leakage is prevented by standing upright portions 81 at positions sandwiching absorbent body 13 in the width direction X in this manner.
- a pair of elastic members 72 extending in the longitudinal direction Y are provided on the outer side portion in the width direction X of the side seat 11b. As shown in FIG. 2 , the pair of elastic members 72 are arranged outside the pair of elastic members 71 in the width direction X. As shown in FIG.
- the pair of stretchable members 72 are, for example, thread rubber or flat rubber that can be contracted in the length direction, and are fixed to the side seat 11b while being stretched in the longitudinal direction Y. As shown in FIG. As described above, the pair of stretchable members 72 are fixed to the side seat 11b in a state of being stretched in the longitudinal direction Y, thereby applying force to deform the main body 10 in the closing direction.
- the pair of stretchable members 72 are arranged on the non-skin surface side Z2 of the absorbent body 13, and are arranged along the side edges of the main body 10 between the top sheet 11 and the back sheet 12 of the main body 10. .
- the pair of elastic members 72 may extend in the longitudinal direction Y while being sewn to the top sheet 11 and the back sheet 12 of the main body 10 .
- the center sheet 11a may be provided so as to cover at least part of the front surface 14 and the back surface 15 of the absorbent body 13 .
- the center sheet 11a is made of, for example, a spunbonded nonwoven fabric that is thin and has low flexural rigidity.
- the center sheet 11a is joined to the front surface 14 and the rear surface 15 of the absorbent body 13 with an adhesive such as hot melt.
- the surface 14 and the back surface 15 of the absorbent body 13 are formed with uneven shapes, so that the absorbent body 13 has a surface gap 20 that opens to the skin side Z1 and a back surface that opens to the non-skin side Z2.
- a void 21 is formed.
- the center sheet 11 a is adhered to the absorbent body 13 along the uneven shape of the absorbent body 13 so that a part of the center sheet 11 a enters the surface space 20 and the back space 21 . More specifically, the center sheet 11a is adhered to the surface protrusions 16a and the rear recesses 16b of the plurality of first embossed portions 16, and the surface recesses 18a and the rear protrusions 18b of the second embossed portions 18, which will be described later.
- a skin sheet (second top sheet) 23 may be further provided on the center sheet 11a.
- the skin sheet 23 is arranged substantially at the center in the width direction X of the body portion 10 .
- the skin sheet 23 has higher rigidity than the center sheet 11a, and is adhered to the center sheet 11a of the top sheet 11 from the skin side Z1.
- the skin sheet 23 is joined to the skin sheet 23 so as not to enter the surface voids 20 . Therefore, a surface gap 20 is formed between the center sheet 11a and the skin sheet 23.
- the surface voids 20 function as flow paths for the urine or air discharged from the wearer to improve the breathability of the absorbent article 1 .
- the back sheet 12 constitutes a surface positioned on the outer side of the body portion 10 when worn, and is arranged on the non-skin surface side Z2.
- the back sheet 12 includes a water-impermeable back film 12a and a back non-woven fabric 12b arranged on the non-skin surface side Z2 of the back film 12a.
- the width of the back film 12a in the width direction X may be smaller than the width of the back nonwoven fabric 12b in the width direction X, and the back nonwoven fabric 12b may extend to both sides in the width direction X beyond the back film 12a.
- the absorber 13 is arranged between the top sheet 11 and the back sheet 12 of the body part 10 and absorbs the wearer's urine that permeates through the top sheet 11 .
- 5 is a plan view of the absorbent body 13 seen from the skin side Z1
- FIG. 6 is a plan view of the absorbent body 13 seen from the non-skin side Z2.
- FIG. 7 is a cross-sectional view of absorbent body 13 taken along line VII-VII in FIG.
- the absorbent body 13 has a substantially rectangular shape elongated in the longitudinal direction Y when viewed from the skin surface side Z1, and the width of the absorbent body 13 in the width direction X is equal to It is formed shorter than the width in X.
- the absorber 13 is arranged substantially in the center of the body portion 10 in the width direction X. As shown in FIG. The ventral end of the absorber 13 is arranged at the ventral end 10a of the main body 10, and the dorsal end of the absorber 13 is arranged at the dorsal end 10b of the main body 10 ( See Figure 2).
- the absorbent body 13 has a front surface 14 arranged on the wearer's skin side Z1 and a back surface 15 arranged on the wearer's non-skin side Z2.
- the absorbent body 13 is embossed from the skin surface side Z1 and the non-skin surface side Z2. Concavo-convex shapes formed on the front surface 14 and the back surface 15 of the absorber 13 will be described later.
- the absorbent body 13 includes a core portion 13a and a core wrap 13b.
- the core portion 13a includes, for example, plant-derived pulp fibers and a super absorbent polymer (SAP), and has water absorbency.
- the core wrap 13b is made of, for example, a tissue or a non-woven fabric sheet, and covers the skin side Z1 and the non-skin side Z2 of the core portion 13a.
- the core wrap 13b is adhered to the surface of the core portion 13a with, for example, a hot melt adhesive.
- the area of the core wrap 13b bonded to the core portion 13a may be larger than the area of the core wrap 13b not bonded to the core portion 13a.
- the core wrap 13b is joined to the core portion 13a so as to follow the uneven surface shape of the core portion 13a.
- the skin surface side Z1 and the non-skin surface side Z2 of the core wrap 13b constitute the front surface 14 and the back surface 15 of the absorbent body 13, respectively.
- a pair of slits 61 may be formed in the absorber 13 as shown in FIG.
- the pair of slits 61 are arranged apart from each other across the center line CL of the main body 10 and extend in the longitudinal direction Y.
- the basis weight of the pair of slits 61 is set lower than the basis weight of other portions of the absorbent body 13 .
- the pair of slits 61 are, for example, elongated through-holes penetrating through the absorbent body 13 in the thickness direction, and the basis weight of the slits 61 is zero.
- Forming the pair of slits 61 in the absorber 13 facilitates the flow of urine excreted from the wearer in the longitudinal direction Y.
- the pair of slits 61 has the function of controlling the direction of urine flow.
- the absorbent body 13 may further have a non-absorbent region 62 that does not substantially contain the superabsorbent polymer.
- the non-absorbent region 62 is formed, for example, at least one of one end side and the other end side in the longitudinal direction Y relative to the pair of slits 61 .
- the basis weight of the non-absorbent region 62 is set lower than the basis weight of the rest of the absorbent body 13 excluding the pair of slits 61 . Therefore, the thickness of the non-absorbent region 62 is smaller than the thickness of other portions of the absorbent body 13 .
- the absorbent body 13 includes a plurality of first embossed portions 16 and second embossed portions 18 .
- the plurality of first embossed portions 16 are portions compressed from the non-skin surface side Z2 toward the skin surface side Z1 by embossing.
- the plurality of first embossed portions 16 are two-dimensionally arranged when viewed from the skin surface side Z1. More specifically, as shown in FIG. 5 , the plurality of first embossed portions 16 are arranged at intervals in the width direction X and the longitudinal direction Y of the absorbent body 13 . Furthermore, the plurality of first embossed portions 16 are arranged at intervals in an oblique direction intersecting the width direction X and the longitudinal direction Y. As shown in FIG. In addition, the some 1st embossed part 16 should just be arrange
- each of the plurality of first embossed portions 16 includes a front convex portion 16a protruding toward the skin side Z1 and a rear concave portion 16b recessed toward the skin side Z1.
- the front convex portion 16a is a portion of the surface 14 of the absorbent body 13 that protrudes toward the skin side Z1
- the back concave portion 16b is a portion of the back surface 15 of the absorbent body 13 that is recessed toward the skin side Z1. That is, the front surface convex portions 16a and the rear surface concave portions 16b of the plurality of first embossed portions 16 form parts of the front surface 14 and the rear surface 15 of the absorbent body 13, respectively.
- the plurality of first embossed portions 16 are formed by, for example, using a roller formed with a plurality of convex portions having an inverted shape of the plurality of first embossed portions 16 so that the absorber 13 is placed on the non-skin surface side. Formed by squeezing from Z2. At least one of the front convex portion 16a and the rear concave portion 16b of the first embossed portion 16 may include a flat surface. In the following description, a region of the absorbent body 13 that overlaps the surface convex portion 16a in the thickness direction Z is referred to as a first embossed portion 16. As shown in FIG.
- the second embossed portion 18 includes a surface recessed portion 18a recessed on the wearer's non-skin side Z2 and a back surface convex portion 18b protruding on the non-skin side Z2.
- the surface concave portion 18a is a portion of the surface 14 of the absorbent body 13 that is recessed toward the non-skin surface side Z2
- the rear surface convex portion 18b is a portion of the rear surface 15 of the absorbent body 13 that protrudes toward the non-skin surface side Z2.
- the surface concave portion 18a and the rear surface convex portion 18b of the second embossed portion 18 form part of the front surface 14 and the rear surface 15 of the absorbent body 13, respectively.
- the second embossed portion 18 is formed by squeezing the absorbent body 13 from the skin surface side Z1 using, for example, a roller on which a convex portion having a reverse shape of the second embossed portion 18 is formed. be done. At least one of the surface concave portion 18a and the rear surface convex portion 18b of the second embossed portion 18 may include a flat surface. In the following description, a region of the absorbent body 13 that overlaps the rear surface convex portion 18b in the thickness direction Z is referred to as a second embossed portion 18. As shown in FIG.
- the surface convex portion 16a of the first embossed portion 16 is arranged closer to the skin surface side Z1 than the surface concave portion 18a of the second embossed portion 18.
- the rear concave portion 16b of the first embossed portion 16 is arranged closer to the skin surface side Z1 than the rear convex portion 18b of the second embossed portion 18 is.
- the back surface recessed portion 16b of the first embossed portion 16 is arranged on the non-skin surface side Z2 relative to the front surface recessed portion 18a of the second embossed portion 18.
- FIG. When viewed from the skin surface side Z1, the rear surface recessed portion 16b of the first embossed portion 16 and the front surface recessed portion 18a of the second embossed portion 18 are formed at positions shifted from each other.
- the surface protrusions 16a and the surface recesses 18a are arranged at different positions in the thickness direction Z, so that the surface 14 of the absorber 13 is uneven.
- the back concave portion 16b and the back convex portion 18b are arranged at different positions in the thickness direction Z, the back surface 15 of the absorber 13 is formed with an uneven shape. Therefore, the surface 14 of the absorbent body 13 is defined by the surface recesses 18a, and the surface voids 20 that are open to the skin surface side Z1 are formed.
- a back surface gap 21 defined by the back recess 16b and opening to the non-skin surface side Z2 is formed.
- These surface voids 20 and back voids 21 function as channels through which urine or air discharged from the wearer flows. For example, when a large amount of urine is supplied to the absorbent body 13 , urine that has not been completely absorbed by the absorbent body 13 is accumulated in the back surface gap 21 .
- the total area of the plurality of first embossed portions 16 viewed from the skin side Z1 may be larger than the area of the second embossed portions 18 viewed from the skin side Z1.
- the total area of the plurality of first embossed portions 16 corresponds to the total projected area of the surface convex portions 16a of the plurality of first embossed portions 16 viewed from the skin surface side Z1.
- the area corresponds to the projected area of the surface recessed portion 18a of the second embossed portion 18 viewed from the skin surface side Z1.
- the second embossed portions 18 are formed between the plurality of first embossed portions 16 .
- the second embossed portions 18 are formed so as to surround each of the plurality of first embossed portions 16 .
- the second embossed portion 18 may be formed along a grid pattern 24 when viewed from the skin surface side Z1.
- the lattice pattern 24 includes a plurality of first imaginary lines 24a extending parallel to each other in a direction intersecting the width direction X and the longitudinal direction Y, and a plurality of first imaginary lines 24a extending in a direction intersecting the width direction X and the longitudinal direction Y parallel to each other. and a plurality of existing second virtual lines 24b.
- the plurality of first virtual lines 24 a and the plurality of second virtual lines 24 b extend in symmetrical directions with respect to the center line CL of the absorbent article 1 and cross each other to form a grid pattern 24 .
- the second embossed portions 18 may be intermittently formed along a plurality of first virtual lines 24a and a plurality of second virtual lines 24b.
- the second embossed portions 18 may be arranged in a wavy line pattern along the plurality of first virtual lines 24a and the plurality of second virtual lines 24b, or may be arranged in a dot pattern.
- non-squeezed portions 25 are formed at positions corresponding to grid points (intersections of a plurality of first virtual lines 24a and a plurality of second virtual lines 24b) of the grid pattern 24.
- the non-pressed portion 25 is a portion that is not substantially subjected to pressing such as embossing. Therefore, in the thickness direction Z, the surface 14 of the skin surface side Z1 of the non-squeezed portion 25 is arranged between the surface convex portion 16a of the first embossed portion 16 and the surface concave portion 18a of the second embossed portion 18, and is not compressed.
- the back surface 15 of the non-skin surface side Z2 of the portion 25 is arranged between the back concave portion 16b of the first embossed portion 16 and the back convex portion 18b of the second embossed portion 18 .
- a plurality of absorbent regions 30 are formed in the absorbent body 13 .
- the plurality of absorbent regions 30 are regions defined by the grid-like pattern 24, and are two-dimensionally arranged over substantially the entire area of the absorbent body 13 when viewed from the skin surface side Z1. That is, the absorbent region 30 is a region surrounded by the second embossed portions 18 .
- the plurality of absorbent regions 30 are arranged at intervals in a direction intersecting the longitudinal direction Y, for example, in the width direction X, or in an oblique direction intersecting the width direction X and the longitudinal direction Y. In the example shown in FIG.
- the plurality of absorbent regions 30 are two-dimensionally arranged in the width direction X, the longitudinal direction Y, and the diagonal direction of the absorbent body 13 .
- the maximum width in the width direction X of at least one absorbent region 30 among the plurality of absorbent regions 30 may be larger than the maximum width in the longitudinal direction Y of the absorbent region 30 .
- each of the plurality of absorbent regions 30 has a rhombic shape with long sides extending in the width direction X and short sides extending in the longitudinal direction Y. As shown in FIG.
- the absorbent region 30 may have a vertically long rhombic shape with long sides extending in the longitudinal direction Y and short sides extending in the width direction X, or may be circular, elliptical, polygonal, or the like. , may have a shape other than a rhombus.
- a plurality of first embossed portions 16 are formed inside the plurality of absorbent regions 30 . Therefore, the plurality of absorbent regions 30 protrude to the skin surface side Z1. In other words, at least a portion of the plurality of absorbent regions 30 are configured by the plurality of first embossed portions 16 .
- the plurality of absorbent regions 30 absorb urine excreted from the wearer by the pulp fibers and superabsorbent polymer contained in the first embossed portion 16 .
- each of the plurality of absorbent regions 30 includes a central region 36 and a peripheral region 37 arranged to surround the central region 36 .
- a central region 36 is a generally circular region located near the center of each absorbent region 30 .
- the peripheral region 37 is a substantially annular region arranged on the periphery of the absorbent region 30 .
- the central portion of the first embossed portion 16 is arranged in the central region 36 and the peripheral portion of the first embossed portion 16 is arranged in the peripheral region 37 .
- the density of the superabsorbent polymer present in the central region 36 is lower than the density of the superabsorbent polymer present in the peripheral region 37 .
- the percentage of pulp fibers in the central region 36 is higher than the percentage of pulp fibers in the peripheral region 37
- the percentage of superabsorbent polymer in the central region 36 is higher than the percentage of superabsorbent polymer in the peripheral region 37. is also lower.
- the density of the superabsorbent polymer present in the peripheral region 37 may be set 10% or more higher than the density of the superabsorbent polymer present in the central region 36 . Since the central region 36 contains a high proportion of pulp fibers, the water absorption rate of the central region 36 is higher than that of the peripheral region 37 .
- the peripheral region 37 contains a high water-absorbent polymer, the maximum water absorption of the peripheral region 37 is higher than the maximum water absorption of the central region 36 .
- the density of the superabsorbent polymer represents the average number of superabsorbent polymers per unit area of the absorbent body 13 .
- urine excreted from the wearer is supplied to the plurality of absorption regions 30 and is quickly absorbed in the central region 36 having a high water absorption rate.
- Urine absorbed in the central region 36 is diffused in the thickness direction Z of the absorbent body 13 .
- Urine that has not been absorbed in the central region 36 is absorbed by the peripheral region 37 .
- the peripheral region 37 contains the superabsorbent polymer at a high density, it can absorb a large amount of urine.
- the superabsorbent polymer has the property that the water permeability decreases as the water absorption increases.
- the barrier is a region in which water permeability is lower than that of other portions of the absorbent body 13, and has an annular shape when viewed from the skin surface side Z1.
- each of the plurality of absorbent regions 30 includes a central region 36 and a peripheral region 37 to allow urine to diffuse throughout the absorbent body 13 . Therefore, it is possible to absorb urine with the entire absorbent body 13 , and for example, urine leakage from the ends of the absorbent body 13 in the longitudinal direction Y can be suppressed.
- FIG. BW1 in FIG. 7 represents the depth of the surface void 20
- BW2 in FIG. 7 represents the depth of the back surface void 21.
- T1 in FIG. 7 represents the thickness of the first embossed portion 16, and T2 in FIG. 7 represents the thickness of the second embossed portion 18.
- the thickness T1 of the first embossed portion 16 corresponds to the distance in the thickness direction Z between the front convex portion 16a and the rear concave portion 16b of the first embossed portion 16
- the thickness T2 of the second embossed portion 18 corresponds to the thickness of the second embossed portion 18.
- T3 in FIG. 7 represents the thickness of the absorbent body 13 .
- the thickness T3 of the absorbent body 13 corresponds to the distance in the thickness direction Z between the front convex portion 16 a of the first embossed portion 16 and the rear convex portion 18 b of the second embossed portion 18 .
- the thickness T3 of the absorbent body 13 is smaller than the sum of the thickness T1 of the first embossed portion 16 and the thickness T2 of the second embossed portion 18 .
- the sum of the thickness T1 of the first embossed portion 16 and the depth BW2 of the back surface void 21 is set to be approximately the same as the sum of the thickness T2 of the second embossed portion 18 and the depth BW1 of the surface void 20. .
- may be 50% or less, 40% or less, 30% or less, 20% or less, or 10% or less with respect to the thickness T3 of the absorbent body 13 .
- the thickness T1 of the first embossed portion 16 may be larger or smaller than the thickness T2 of the second embossed portion 18.
- the difference between the thickness T1 of the first embossed portion 16 and the thickness T2 of the second embossed portion 18 is set small.
- the difference between the thickness T1 of the first embossed portion 16 and the thickness T2 of the second embossed portion 18 is 50% or less, 40% or less, 30% or less, 20% or less with respect to the thickness T1 of the first embossed portion, or , 10% or less.
- the depth BW1 of the surface void 20 is set larger than the difference between the thickness T1 of the first embossed portion 16 and the thickness T2 of the second embossed portion 18 .
- the load may be concentrated on a portion with a small thickness, causing the absorber 13 to bend.
- the absorbent body 13 since the difference between the thickness T1 of the first embossed portion 16 and the thickness T2 of the second embossed portion 18 is small, the shape of the absorbent body 13 can be easily maintained. Moreover, since non-uniformity in the density of the absorbent body 13 is suppressed, urine can be absorbed in the entire absorbent body 13 with high uniformity. Furthermore, in the absorbent body 13, by increasing the depth BW1 of the surface voids 20, the voids formed between the wearer's skin surface and the surface 14 of the absorbent body 13 can be increased. As a result, a clear shadow of the surface voids 20 is formed on the surface 14 of the absorbent body 13, and the air permeability of the absorbent body 13 is improved.
- the depth BW1 of the surface void 20 and the depth BW2 of the back surface void 21 may be approximately the same depth.
- It may be 20% or less, or 10% or less.
- depth BW1 of surface air gap 20 may be greater than depth BW2 of back surface air gap 21 .
- the depth BW1 of the surface voids 20 is greater than the depth BW2 of the back surface voids 21, the breathability of the absorbent body 13 is improved.
- the depth BW1 of the surface gap 20 may be smaller than the depth BW2 of the backside gap 21 .
- the thickness T1 of the first embossed portion 16 and the thickness T2 of the second embossed portion 18 may differ depending on the position in the width direction X of the absorbent body 13 .
- the absorbent body 13 has a central portion 45 arranged substantially in the center in the width direction X and both side portions 46 arranged on both sides of the central portion 45 in the width direction X.
- the first embossed portion 16 and the second embossed portion 18 are formed in the central portion 45 and the side portions 46 .
- the thickness T1 of the first embossed portion 16 and the thickness T2 of the second embossed portion 18 of the central portion 45 are different from the thickness T1 of the first embossed portion 16 and the thickness T2 of the second embossed portion 18 of the side portions 46.
- the thickness T1 of the first embossed portions 16 in the central portion 45 may be greater than the thickness T1 of the first embossed portions 16 formed in the side portions 46 .
- the thickness T2 of the second embossed portions 18 of the central portion 45 may be greater than the thickness T2 of the second embossed portions 18 of the side portions 46 .
- the thickness T1 of the first embossed portions 16 of the central portion 45 may be smaller than the thickness T1 of the first embossed portions 16 formed on both side portions 46, and the thickness T2 of the second embossed portions 18 of the central portion 45 may be smaller than the thickness T2 of the second embossed portion 18 on both side portions 46 . Also, the thickness T1 of the first embossed portions 16 of the central portion 45 may be greater than the thickness T2 of the second embossed portions 18 of the central portion 45 .
- the difference between the thickness T1 of the first embossed portion 16 of the central portion 45 and the thickness T2 of the second embossed portion 18 of the central portion 45 is the thickness T1 of the first embossed portion 16 of the side portions 46 and the thickness T2 It may be larger than the difference from the thickness T2 of the second embossed portion 18 .
- the thick portion of the central portion 45 absorbs urine at a high absorption rate. can do.
- the central portion 45 near the wearer's urination opening can absorb urine at a high absorption rate, and the side portions 46 arranged around the wearer's legs can facilitate the diffusion of urine.
- W1 in FIG. 7 represents the width of the rear recessed portion 16b of the first embossed portion 16, and W2 in FIG. 7 represents the width of the surface recessed portion 18a of the second embossed portion 18.
- W3 in FIG. 7 represents the distance between the rear recesses 16b of the adjacent first embossed portions 16 among the plurality of first embossed portions 16, and W4 in FIG. It represents the distance between the surface recesses 18a. Note that the width W1 of the rear recessed portion 16b, the width W2 of the front recessed portion 18a, the distance W3 between adjacent rear recessed portions 16b, and the distance W4 between adjacent front recessed portions 18a are defined by the first virtual line 24a or the second virtual line 24b.
- the distance W3 between the adjacent back recesses 16b is set larger than the width W2 of the front recesses 18a.
- the distance W4 between the adjacent front surface recesses 18a is set larger than the width W1 of the rear surface recesses 16b.
- the surface convex portion 16a of the first embossed portion 16 protrudes toward the skin side Z1, and the surface concave portion 18a of the second embossed portion 18 is recessed toward the non-skin side Z2.
- the height of the surface convex portion 16a of the first embossed portion 16 relative to the surface concave portion 18a of the second embossed portion 18 can be increased. Therefore, the depth BW1 of the surface void 20 formed between the wearer's skin surface and the surface recessed portion 18a of the second embossed portion 18 can be increased without increasing the thickness T3 of the absorbent body 13. Therefore, it is possible to both reduce the thickness of the absorbent body 13 and improve the breathability.
- the absorbent article 1 includes a pair of stretchable members 71 extending in the longitudinal direction Y, a plurality of stretchable members 33 extending in the width direction X so as to cross the absorbent body 13, and A plurality of elastic members 43 extending in the width direction X are provided as follows. The elastic member 71, the elastic member 33, and the elastic member 43 are contracted, and the absorber 13 is contracted in the width direction X and the longitudinal direction Y, so that the shadow of the surface concave portion 18a can be further clarified.
- the absorbent article 1 does not have a portion where the thickness of the absorbent body 13 is locally reduced, the absorbent body 13 is less likely to be torn. Therefore, the superabsorbent polymer contained in the absorbent body 13 is prevented from leaking out and adhering to the wearer. Furthermore, in the absorber 13 described above, the body pressure of the wearer is applied from the skin surface side Z1, so that the uneven shape of the absorber 13 is evened out, and when the body pressure is relieved, a restoring force is generated to absorb. The uneven shape of the body 13 is restored. At this time, air circulation occurs inside and outside the absorbent body 13, and the moisture inside the absorbent article 1 is released to the outside. This further enhances the breathability of the absorbent body 13 .
- a plurality of first embossed portions 16 and second embossed portions 18 are formed substantially throughout the absorbent body 13, but the plurality of first embossed portions 16 and second embossed portions 18 are It may be formed only on a part of the absorbent body 13 .
- the absorber 13 has a ventral portion 51 located on one end side in the longitudinal direction Y, a dorsal portion 52 located on the other end side in the longitudinal direction Y, and an ventral portion 51 .
- the plurality of first embossed portions 16 and second embossed portions 18 may be formed only in the intermediate portion 53 of the absorbent body 13 , including the intermediate portion 53 positioned between the dorsal portion 52 .
- a plurality of end embossed portions 55 may be formed on the ventral portion 51 and the dorsal portion 52 .
- the plurality of end embossed portions 55 are portions compressed toward the skin surface side Z1 or the non-skin surface side Z2 by being embossed.
- the plurality of end embossed portions 55 are formed at intervals in the longitudinal direction Y and extend in a wavy line between both ends in the width direction X of the ventral portion 51 and the dorsal portion 52 .
- the plurality of end embossed portions 55 block the flow of urine reaching the abdominal portion 51 and the dorsal portion 52 in the longitudinal direction Y, thereby suppressing urine leakage from the ends in the longitudinal direction Y of the absorber 13. .
- the plurality of end embossed portions 55 may be formed only on one of the ventral portion 51 and the dorsal portion 52 . At least one end embossed portion 55 may be formed in the absorbent body 13 .
- the absorbent body 13 may further include a non-absorbent region 62 substantially free of superabsorbent polymer.
- the non-absorbent regions 62 are formed in the ventral portion 51 and the dorsal portion 52 . More specifically, one end side of the longitudinal direction Y of the absorbent body 13 from the boundary between the ventral part 51 and the intermediate part 53 and the longitudinal direction of the absorbent body 13 from the boundary between the dorsal part 52 and the intermediate part 53 is arranged on at least one of the other end sides of the
- the basis weight of the non-absorbent region 62 is set lower than the basis weight of other portions of the absorbent body 13 . Therefore, the average thickness of the ventral portion 51 and the dorsal portion 52 is smaller than the average thickness of the intermediate portion 53 .
- the back recessed portion 16b of the first embossed portion 16 is arranged on the non-skin surface side Z2 from the surface recessed portion 18a of the second embossed portion 18, but as shown in FIG. , the rear surface recessed portion 16b of the first embossed portion 16 may be arranged closer to the skin surface side Z1 than the surface recessed portion 18a of the second embossed portion 18.
- the depth BW1 of the surface void 20 can be increased by arranging the back surface recess 16b closer to the skin surface side Z1 than the surface recess 18a, and as a result, the breathability of the absorbent article 1 can be improved. .
- the second embossed portions 18 are intermittently formed along the lattice pattern 24, but the second embossed portions 18 may be formed continuously.
- the non-squeezed portions 25 may not be formed on the absorbent body 13 and the second embossed portions 18 may be formed continuously along a lattice pattern.
- the second embossed portion 18 may extend in a wavy line or curved line. Note that the absorbent body 13 does not necessarily have to include a plurality of first embossed portions 16 , and may include at least one first embossed portion 16 .
- the plurality of absorbent regions 30 protrude to the skin surface side Z1, but a part of the plurality of absorbent regions 30 may protrude to the non-skin surface side Z2.
- the various embodiments described above can be arbitrarily combined within a consistent range.
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Abstract
Description
Claims (13)
- 着用者の腹側と背側と結ぶ長手方向と、前記長手方向に直交する幅方向とを有する吸収性物品であって、
前記着用者の肌面側に突出する表面凸部と前記肌面側に窪む裏面凹部とを含む1又は複数の第1エンボス部と、前記着用者の非肌面側に窪む表面凹部と前記非肌面側に突出する裏面凸部とを含む第2エンボス部とを含む吸収体を備え、
前記第1エンボス部の前記表面凸部と前記第2エンボス部の前記表面凹部との前記吸収体の厚み方向における距離をBW1とし、前記第1エンボス部の厚みをT1とし、前記第2エンボス部の厚みをT2としたときに、BW1>|T1-T2|が成立する、吸収性物品。 - 前記第1エンボス部の厚みT1と前記第2エンボス部の厚みT2の差は、前記第1エンボス部の厚みT1に対して50%以下である、請求項1に記載の吸収性物品。
- 前記吸収体は、中央部と、前記中央部の前記幅方向の両側に配置される両側部とを含み、
前記中央部及び前記両側部の各々は、前記第1エンボス部及び前記第2エンボス部を含み、
前記中央部に形成された前記第1エンボス部の厚みT1と前記中央部に形成された前記第2エンボス部の厚みT2との差は、前記両側部に形成された前記第1エンボス部の厚みT1と前記両側部に形成された前記第2エンボス部の厚みT2との差よりも大きい、請求項1又は2に記載の吸収性物品。 - 前記吸収体は、中央部と、前記中央部の前記幅方向の両側に配置される両側部とを含み、
前記中央部に形成された前記第1エンボス部の厚みT1は、前記中央部に形成された前記第2エンボス部の厚みT2よりも大きい、請求項1~3の何れか一項に記載の吸収性物品。 - 前記第1エンボス部の前記表面凸部と前記第2エンボス部の前記表面凹部との前記厚み方向における距離BW1は、前記第1エンボス部の前記裏面凹部と前記第2エンボス部の前記裏面凸部との前記厚み方向における距離BW2よりも大きい、請求項1~4の何れか一項に記載の吸収性物品。
- 前記第1エンボス部の前記表面凸部と前記第2エンボス部の前記表面凹部との前記厚み方向における距離BW1と、前記第1エンボス部の前記裏面凹部と前記第2エンボス部の前記裏面凸部との前記厚み方向における距離BW2との差は、前記距離BW1に対して50%以下である、請求項1~5の何れか一項に記載の吸収性物品。
- 前記第1エンボス部の前記裏面凹部は平坦面を含む、請求項1~6の何れか一項に記載の吸収性物品。
- 前記吸収体は、所定の方向に配列された複数の前記第1エンボス部を含み、
前記所定の方向に沿った断面視において、前記複数の第1エンボス部のうち隣接する前記第1エンボス部の前記裏面凹部間の距離は、前記第2エンボス部の前記表面凹部の幅よりも大きい、請求項1~7の何れか一項に記載の吸収性物品。 - 前記吸収体は、所定の方向に配列された複数の前記第1エンボス部を含み、
前記第2エンボス部は、前記肌面側から見て格子状のパターンに沿って形成されており、
前記所定の方向に沿った断面視において、隣接する前記第2エンボス部の前記表面凹部間の距離は、前記第1エンボス部の前記裏面凹部の幅よりも大きい、請求項1~8の何れか一項に記載の吸収性物品。 - 前記吸収体は、パルプ繊維を含むコア部、及び、前記コア部を覆うコアラップを含み、
前記コアラップの一部は、前記コア部に接着されており、
前記コアラップの前記コア部に接着されている領域の面積は、前記コアラップの前記コア部に接着されていない領域の面積よりも大きい、請求項1~9の何れか一項に記載の吸収性物品。 - 前記吸収体に接着された第1トップシートと、
前記第1トップシートよりも高い剛性を有し、前記肌面側から前記第1トップシートに接着された第2トップシートと、
を更に備え、
前記第2トップシートは、前記第1トップシートと前記第2トップシートとの間に空隙が形成されるように前記第1トップシートに接着されている、請求項1~10の何れか一項に記載の吸収性物品。 - 前記吸収体よりも前記非肌面側に配置され、前記長手方向に延在する第1伸縮部材を更に備える、請求項1~11の何れか一項に記載の吸収性物品。
- 前記吸収体よりも前記非肌面側に配置され、前記幅方向に延在する第2伸縮部材を更に備える、請求項1~12の何れか一項に記載の吸収性物品。
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011177306A (ja) * | 2010-02-26 | 2011-09-15 | Unicharm Corp | 吸収性物品及び吸収性物品の製造方法 |
| JP2017042419A (ja) * | 2015-08-27 | 2017-03-02 | 日本製紙クレシア株式会社 | 吸収性物品 |
| JP2017158729A (ja) * | 2016-03-08 | 2017-09-14 | 王子ホールディングス株式会社 | 吸収性物品、その製造装置および製造方法 |
| JP2022114436A (ja) * | 2021-01-26 | 2022-08-05 | 王子ホールディングス株式会社 | 吸収性物品の製造方法および吸収性物品 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011177306A (ja) * | 2010-02-26 | 2011-09-15 | Unicharm Corp | 吸収性物品及び吸収性物品の製造方法 |
| JP2017042419A (ja) * | 2015-08-27 | 2017-03-02 | 日本製紙クレシア株式会社 | 吸収性物品 |
| JP2017158729A (ja) * | 2016-03-08 | 2017-09-14 | 王子ホールディングス株式会社 | 吸収性物品、その製造装置および製造方法 |
| JP2022114436A (ja) * | 2021-01-26 | 2022-08-05 | 王子ホールディングス株式会社 | 吸収性物品の製造方法および吸収性物品 |
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