WO2016157637A1 - Article absorbant - Google Patents

Article absorbant Download PDF

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Publication number
WO2016157637A1
WO2016157637A1 PCT/JP2015/084775 JP2015084775W WO2016157637A1 WO 2016157637 A1 WO2016157637 A1 WO 2016157637A1 JP 2015084775 W JP2015084775 W JP 2015084775W WO 2016157637 A1 WO2016157637 A1 WO 2016157637A1
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WO
WIPO (PCT)
Prior art keywords
absorbent article
point
absorber
compressed
thickness direction
Prior art date
Application number
PCT/JP2015/084775
Other languages
English (en)
Japanese (ja)
Inventor
工藤　淳
雅史 北川
健太 谷口
紗恵子 秋山
Original Assignee
ユニ・チャーム株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by ユニ・チャーム株式会社 filed Critical ユニ・チャーム株式会社
Priority to KR1020177031436A priority Critical patent/KR102512664B1/ko
Priority to CN201580078472.1A priority patent/CN107427392A/zh
Priority to MYPI2017703319A priority patent/MY182997A/en
Publication of WO2016157637A1 publication Critical patent/WO2016157637A1/fr

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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
    • 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
    • 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
    • A61F13/47—Sanitary towels, incontinence pads or napkins
    • A61F13/4704—Sanitary towels, incontinence pads or napkins having preferential bending zones, e.g. fold lines or grooves
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/45—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape
    • A61F13/47—Sanitary towels, incontinence pads or napkins
    • A61F13/472—Sanitary towels, incontinence pads or napkins specially adapted for female use
    • 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
    • A61F13/511—Topsheet, i.e. the permeable cover or layer facing the skin
    • 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
    • A61F13/539—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium characterised by the connection of the absorbent layers with each other or with the outer layers
    • 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
    • A61F13/537—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 characterised by a layer facilitating or inhibiting flow in one direction or plane, e.g. a wicking layer
    • A61F2013/53765—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 characterised by a layer facilitating or inhibiting flow in one direction or plane, e.g. a wicking layer characterized by its geometry

Definitions

  • the present invention relates to an absorbent article.
  • Patent Document 1 discloses a liquid-impermeable back sheet, a liquid-permeable top sheet attached to the back sheet, and an absorber (absorbent core) positioned between the back sheet and the top sheet. What is provided is disclosed.
  • the absorbent body of this absorbent article has a forming line in the vaginal opening region (crotch region) located in the center in the longitudinal direction and the width direction.
  • the said forming line is comprised from the center vertical line extended in the longitudinal direction of an absorber, and a pair of line extended
  • the present invention has been made in view of the above problems, and the object of the present invention is to fit an absorber to an excretory opening such as the vaginal opening even when it is repeatedly used for attachment and detachment. It is in providing the absorbent article which can be performed.
  • a main invention for achieving the above object is an absorbent article having a longitudinal direction, a width direction, and a thickness direction, comprising an absorbent body that absorbs liquid, and the absorbent body is provided in the thickness direction. It is an absorbent article characterized in that it has a fold line extending from one end to the other end in the longitudinal direction so as to project and bend toward the skin side.
  • the absorbent body to the excretory opening such as the vaginal opening even when it is repeatedly attached and detached.
  • FIG. 3 is a sectional view taken along line III-III in FIG. 1. It is the schematic plan view which looked at the absorber from the non-skin side of the thickness direction.
  • FIG. 5A and FIG. 5B are schematic views when the absorber is viewed from the longitudinal direction.
  • FIG. 5A shows a state in which the absorber is bent
  • FIG. 5B shows a state in which the bent absorber is spread. It is explanatory drawing for demonstrating the usage aspect of a sanitary napkin.
  • An absorbent article having a longitudinal direction, a width direction, and a thickness direction comprising an absorbent body that absorbs liquid, and the absorbent body is bent so as to project and bend toward the skin side in the thickness direction
  • the absorbent article which has from the one end of the said longitudinal direction to the other end becomes clear.
  • the said absorber has two or more point-like pressing parts compressed in the said thickness direction, and the said point-like pressing part is the said to-be-squeezed surface formed by being pressed. It is desirable that the distance between the centers of the surfaces to be compressed is longer than the widest width dimension of the surface to be compressed in the adjacent point-shaped compressed portions that are provided on one side in the thickness direction. Thereby, since a flow path necessary for the liquid to flow can be ensured between the point-like compressed parts, the liquid is easily diffused smoothly in the absorbent body, and the liquid is placed in the peripheral part of the broken line. Accumulation is suppressed, and the bent shape of the absorber can be stably maintained.
  • the distance between the centers of the surfaces to be compressed is 1 mm or more and 10 mm or less in the adjacent point-like compressed parts.
  • the dimension of the widest width of the pressed surface is 0.4 mm or more and 4.0 mm or less.
  • the absorbent body includes the fold line at the center in the width direction, and the width-direction dimension is not more than twice the dimension in the thickness direction of the absorbent body. From one end to the other in the longitudinal direction, and at least a part of which is disposed adjacent to the first point-like compressed part, and at least a part of which overlaps the folding induction region. It is desirable to have the 2nd point-like pressing part which has overlapped with the above-mentioned folding induction field. Thereby, since the flow path for the liquid to flow is formed in the folding induction region, it is possible to suppress the liquid from being accumulated in the contact portion with the excretion opening in the folding induction region. The bent shape can be stably maintained.
  • the widest width of the opening in the thickness direction in the point-like compressed portion is narrower than the width of the folding induction region.
  • the plurality of point-like compressed portions are arranged at equal intervals in the longitudinal direction and the width direction, respectively.
  • the liquid can smoothly flow in the longitudinal direction in the absorber, and the rigidity in the width direction of the absorber can be ensured.
  • the distance between the point-like compressed parts adjacent in the longitudinal direction is shorter than the distance between the point-like compressed parts adjacent in the width direction.
  • the liquid flows more easily in the longitudinal direction than in the width direction in the absorbent body, and the liquid can be diffused in the absorbent body in a shorter time.
  • the dimension in the longitudinal direction of the point-like compressed portion is longer than the dimension in the width direction. Therefore, it becomes possible to shorten the distance between the said point-like pressing parts adjacent to the said longitudinal direction.
  • the absorbent body has an absorbent core containing a thermoplastic resin and a cover sheet containing a thermoplastic resin laminated in the thickness direction, and the plurality of point-like compressed parts are It is desirable that the absorbent core and the cover sheet are formed by pressing. Thereby, since the said absorptive core and the said cover sheet are joined more firmly, even when the said absorber absorbs a liquid and expand
  • This absorbent article has a top sheet that covers the absorbent body from the skin side in the thickness direction, and the top sheet is a non-woven fabric having a lower density than the absorbent body.
  • the top sheet and the absorbent body And are preferably joined. This makes it easier for the liquid to flow from the top sheet to the absorber using capillary action, and the problem that the liquid flows on the surface of the top sheet and the liquid absorbed in the absorber The problem of backflow (liquid return) on the surface of the top sheet can be avoided.
  • the top sheet and the absorbent body are joined in the thickness direction by a plurality of dotted joint pressing parts, and the absorbent body has the broken line at the center in the width direction.
  • a plurality of the point-like joint compressions including a folding induction region including a width-direction dimension that is less than or equal to twice the dimension in the thickness direction of the absorbent body from one end to the other end in the longitudinal direction. It is desirable that the portion is disposed outside the folding guide region in the width direction. Thereby, since the said some dotted
  • the dimension of the absorbent body in the thickness direction is 3 mm or less.
  • the absorbent article includes so-called cage sheets (for example, panty liners) and the like, and is not limited to sanitary napkins.
  • FIG. 1 is a schematic plan view of a sanitary napkin 1 according to an embodiment of the present invention as viewed from the skin side in the thickness direction.
  • FIG. 2 is a schematic plan view of the sanitary napkin 1 viewed from the non-skin side in the thickness direction.
  • 3 is a cross-sectional view taken along line III-III in FIG.
  • FIG. 4 is a schematic plan view of the absorber 3 as seen from the non-skin side in the thickness direction.
  • 5A and 5B are schematic views when the absorber 3 is viewed from the longitudinal direction.
  • FIG. 5A shows a state in which the absorber 3 is bent
  • FIG. 5B shows a state in which the bent absorber 3 is unfolded. Yes.
  • the sanitary napkin 1 is a sheet-like member that is vertically long in plan view, and includes a longitudinal direction, a width direction, and a thickness direction.
  • longitudinal direction refers to the longitudinal direction of the sanitary napkin 1 product
  • width direction refers to the lateral direction orthogonal to the longitudinal direction
  • thickness direction refers to The direction orthogonal to the longitudinal direction and the width direction is shown.
  • the thickness direction has a “skin side” that is in contact with the user's skin when the sanitary napkin 1 is used, and a “non-skin side” that is the opposite side.
  • the sanitary napkin 1 includes a top sheet 2, an absorbent body 3, and a back sheet 4, and the top sheet 2, the absorbent body 3, and the back sheet from the skin side in the thickness direction toward the non-skin side.
  • the sheets 4 are laminated in this order.
  • the top sheet 2 and the absorbent body 3 and the absorbent body 3 and the back sheet 4 are joined together by an adhesive 50 such as a hot melt adhesive.
  • an adhesive 50 such as a hot melt adhesive.
  • Examples of the application pattern of the adhesive 50 include an ⁇ pattern, a spiral pattern, and a stripe pattern.
  • the top sheet 2 is a liquid-permeable member that allows liquid such as menstrual blood to permeate from the skin side in the thickness direction to the non-skin side, and comes into contact with the user's skin when the sanitary napkin 1 is used.
  • the top sheet 2 is formed larger than the absorbent body 3 in a plan view and covers the absorbent body 3 from the skin side in the thickness direction.
  • the absorber 3 is shown with the broken line.
  • the top sheet 2 has an outer edge portion 21 extending outward in the longitudinal direction and outward in the width direction from the absorbent body 3, and has a pair of projecting portions 22 projecting outward in the width direction at substantially the center in the longitudinal direction. is doing.
  • the top sheet 2 is a nonwoven fabric having a density lower than that of the absorber 3, and for example, an air-through nonwoven fabric or the like is used.
  • the top sheet 2 is not limited to an appropriate non-woven fabric such as an air-through non-woven fabric, but may be any flexible sheet member having liquid permeability. However, it is more desirable to use a non-woven fabric having a lower density than the absorbent body 3.
  • capillary phenomenon means a phenomenon in which the liquid level rises from the outer free surface due to the inside of a thin tube placed in a liquid or a gap between solid walls, and this action is stronger as the gap is narrower. Become. Therefore, the liquid flows through the gaps of the fibers formed in the top sheet 2 and the gaps of the fibers formed in the absorbent body 3 and penetrates into each member. The narrower the gap, the faster the liquid penetration rate. Penetration from the top sheet 2 side to the absorber 3 side having a higher density (narrow gap) than the top sheet 2 is facilitated. Therefore, the problem that the liquid flows on the surface (skin side surface) of the top sheet 2 and the problem that the liquid absorbed inside the absorber 3 flows backward (liquid return) on the surface of the top sheet 2. Can be avoided.
  • the absorber 3 is a member that absorbs liquid such as menstrual blood and holds it inside.
  • the absorbent body 3 includes an absorbent core 31, a skin side cover sheet 32, and a non-skin side cover sheet 33, and from the skin side (top sheet 2 side) in the thickness direction to the non-skin side ( The skin side cover sheet 32, the absorbent core 31, and the non-skin side cover sheet 33 are laminated in this order toward the back sheet 4 side.
  • the absorbent core 31 includes cellulosic water-absorbing fibers that are liquid absorbent fibers and thermoplastic resin fibers, and these fibers are mixed with each other.
  • the liquid absorbent fiber for example, pulp fiber or the like is used.
  • a super absorbent polymer (so-called SAP) or the like may be used as an example of the liquid absorbent granular material.
  • the thermoplastic resin fiber for example, a composite fiber having a so-called sheath-core structure in which a sheath is polyethylene (PE) and a core is polyethylene terephthalate (PET) is used.
  • the skin-side cover sheet 32 is a nonwoven fabric including thermoplastic resin fibers, and a member having excellent liquid permeability such as an air-through nonwoven fabric is used.
  • the non-skin-side cover sheet 33 is a non-woven fabric containing thermoplastic resin fibers in the same manner as the skin-side cover sheet 32.
  • a member having excellent flexibility such as an SMS (spunbond / meltblown / spunbond) non-woven fabric is used.
  • the skin-side cover sheet 32 and the absorbent core 31 and the absorbent core 31 and the non-skin-side cover sheet 33 are joined in the thickness direction by an adhesive 500 such as a hot melt adhesive. Has been.
  • thermoplastic resin contained in each of the absorbent core 31, the skin side cover sheet 32, and the non-skin side cover sheet 33 does not necessarily need to be a fibrous one, and the shape thereof is not particularly limited.
  • the absorbent core 31, the skin side cover sheet 32, and the non-skin side cover sheet 33 do not necessarily need to contain a thermoplastic resin, but the absorbent core 31, the skin side cover sheet 32, and the non-skin side are not necessarily included. It is desirable that any one of the cover sheets 33 includes a thermoplastic resin.
  • the absorbent body 3 has a broken line 3 ⁇ / b> L that is guided to protrude and bend toward the skin side in the thickness direction.
  • the broken line 3L is a line formed by folding in advance in the manufacturing stage, and does not include, for example, a line formed by embossing or a slit-like groove (hinge).
  • the broken line 3 ⁇ / b> L is formed at the center position in the width direction of the absorber 3 from one end to the other end in the longitudinal direction.
  • the broken line 3L is not necessarily formed at the center position in the width direction of the absorber 3, and may be formed at a position slightly shifted in the width direction from the center position. However, since the sanitary napkin 1 is designed in a contrasting shape based on the center position in the width direction, the broken line 3L is desirably formed at the center position in the width direction. In FIG. 1, FIG. 2, FIG. 4, and FIGS. 5A and 5B, the broken line 3L is indicated by a one-dot chain line.
  • the absorber 3 has the folding induction
  • the folding guide region 3a has a widthwise dimension (Wa 1 + Wa 2 ) in a state in which the absorber 3 bent along the fold line 3L is spread, and a dimension T in the thickness direction of the absorber 3. Less than twice.
  • the dimension (Wa 1 + Wa 2 ) in the width direction of the folding induction region 3a is two times the dimension T in the thickness direction of the absorber 3.
  • the thickness T of the absorber 3 is 3 mm or less, and preferably 2 mm or less.
  • the absorbent body 3 has a plurality of point-like compressed parts 30 that are compressed in the thickness direction.
  • the “spot shape” includes a region formed around an arbitrary point having no area, and has a predetermined shape and area.
  • the liquid absorbed by the absorber 3 flows through the flow path (gap) formed between the plurality of point-like compressed parts 30 and is diffused into the absorber 3.
  • the collapse of the bent shape of the absorbent body 3 due to the accumulation of liquid in the periphery of the broken line 3L, that is, the folding guide region 3a is suppressed, and the bent shape can be easily maintained.
  • the point-like compressed portion 30 is formed by pressing the skin side cover sheet 32, the absorbent core 31, and the non-skin side cover sheet 33 together in the thickness direction. ing. Thereby, joining of the skin side cover sheet 32, the absorptive core 31, and the non-skin side cover sheet 33 becomes strong, and even when the absorber 3 absorbs the liquid and expands in the thickness direction, the thickness is less likely to change.
  • the liquid can be smoothly flowed inside the absorber 3.
  • FIG. 3 only two point-like compressed parts 30 among the plurality of point-like compressed parts 30 are shown by broken lines.
  • the absorber 3 does not necessarily need to have the some dotted
  • the top sheet 2 and the absorbent body 3 are joined and integrated in the thickness direction by a plurality of dotted joint pressing parts 23 and a plurality of linear joint pressing parts 24. More specifically, the plurality of dotted joint squeezing parts 23 and the plurality of linear joint squeezing parts 24 are formed by being squeezed from the skin side surface of the top sheet 2.
  • dashet in the point-like compressed portion 23 is synonymous with “point” in the point-like compressed portion 30.
  • four dotted joining pressing parts 23 among several dotted joining pressing parts 23, and two linear joining pressing parts 24 among several linear joining pressing parts 24 are shown with a broken line. Yes.
  • the plurality of dotted joint pressing parts 23 are arranged on the outer side in the width direction of the folding induction region 3 a of the absorber 3. That is, the some dotted
  • the density of the absorber 3 becomes partially high, and the rigidity of the absorber 3 is strong. Become. In that case, the bending deformation along the broken line 3L is likely to be hindered in the portion, or the bent shape along the broken line 3L is likely to be broken. Therefore, by not forming the dotted joint pressing part 23 in the folding induction region 3a, the absorber 3 can be easily folded along the fold line 3L, and the folded shape of the absorber 3 can be maintained.
  • the plurality of linear joint squeezing parts 24 are formed continuously along the outer peripheral edge of the absorbent body 3 and have an elongated ring shape in the longitudinal direction as a whole.
  • the plurality of dotted joint squeezing parts 23 are discretely arranged in a substantially closed region partitioned by the plurality of linear joint squeezing parts 24.
  • the back sheet 4 is a liquid-impermeable member, and for example, a resin film such as polyethylene (PE) is used.
  • PE polyethylene
  • the back sheet 4 prevents the liquid that has passed through the top sheet 2 and is absorbed by the absorbent body 3 from seeping out into clothes (non-skin side) such as underwear.
  • the back sheet 4 has an outer edge portion 41 extending outward in the longitudinal direction and outward in the width direction from the outer peripheral edge of the absorbent body 3, and a pair of overhangs projecting outward in the width direction.
  • a portion 42 is provided at substantially the center in the longitudinal direction.
  • the sanitary napkin 1 is formed between the top sheet 2 and the back sheet 4 by joining the outer edge part 41 of the back sheet 4 and the outer edge part 21 (see FIG. 1) of the top sheet 2 described above by adhesion or welding. In this structure, the absorber 3 is held. In addition, when the sanitary napkin 1 is placed and fixed on an undergarment or the like by joining the pair of overhang portions 42 of the backsheet 4 and the pair of overhang portions 22 (see FIG. 1) of the top sheet 2 described above. A wing portion as a fixed portion to be provided is configured.
  • a pair of strip-like main body adhesive portions 51 extending in the longitudinal direction are provided on the outer side in the width direction of the folding induction region 3 a, and a pair of rectangular wing adhesive portions 52 are provided. It is provided in a portion corresponding to the pair of overhang portions 42.
  • the pair of main body adhesive portions 51 are attached to the inside of the crotch portion of the underwear, and the pair of wing portions (the pair of overhang portions 22 and 42) are bent to the non-skin side to form a pair of
  • the wing adhesive part 52 is affixed to the outside of the crotch, and the sanitary napkin 1 is fixed to the underwear.
  • FIG. 6 is an explanatory diagram for explaining a usage mode of the sanitary napkin 1.
  • the underwear When the user 6 wears the sanitary napkin 1, the underwear is pulled up to the crotch 60 side of the user 6 with the sanitary napkin 1 fixed to the crotch of the underwear.
  • the sanitary napkin 1 As shown in state A, the sanitary napkin 1 is provided with a bent shape (folding fold) along the fold line 3L in advance in the absorbent body 3 of the sanitary napkin 1, so that the sanitary napkin 1 is on the skin side (in FIG. 6). It is pulled up in a bent state so as to protrude upward.
  • the portion that protrudes toward the skin along the broken line 3L is a labia in which the excretory opening 60a such as the vaginal opening exists. To touch. Thereby, while making the user 6 feel favorable fitting property of the sanitary napkin 1, it becomes possible to make the absorber 3 absorb the excretory fluid such as menstrual blood without leaking outside.
  • the polygonal line 3L is formed only in a part of the absorbent body 3 in the longitudinal direction (for example, a region in contact with the excretion opening 60a), absorption is performed by the restoring force of the region where the polygonal line 3L is not formed. It becomes easy to return to the state where the body 3 spreads, and it becomes difficult to maintain the bent shape of the absorbent body along the broken line 3L.
  • the broken line 3L is formed from one end to the other end in the longitudinal direction of the absorber 3 as in the present embodiment, the restoring force is difficult to work and the absorber 3 along the broken line 3L
  • the bent shape can be stably maintained without breaking. Therefore, for example, even in an environment where the user 6 repeatedly uses the sanitary napkin 1 for a long time of 12 hours or longer, the absorber 3 can be fitted to the excretion opening 60a.
  • FIG. 7 is a partially enlarged schematic view of the absorber 3 as viewed from the longitudinal direction.
  • FIG. 8 is an enlarged schematic view of the periphery of the folding induction region 3a when the absorber 3 is viewed from the non-skin side in the thickness direction.
  • the point-like compressed portion 30 is formed by being compressed from the non-skin side in the thickness direction of the absorbent body 3.
  • a method for forming the point-like compressed portion 30 for example, a method of forming the absorbent body 3 by placing the skin side surface on a flat table and pressing and pressing a pin having a circular cross section from the non-skin side surface toward the table. (So-called embossing). At this time, a dent 303 corresponding to each point-like compressed portion 30 is formed on the skin side of the absorbent body 3.
  • embossing So-called embossing
  • the absorbent core 31 contains a thermoplastic resin
  • at least one of the skin-side cover sheet 32 and the non-skin-side cover sheet 33 also contains a thermoplastic resin.
  • the thermoplastic resin of the absorbent core 31 and the thermoplastic resin of the cover sheets 32 and 33 are heat-sealed by heat generated by embossing when forming the point-like compressed portion 30, and the absorbent core 31 and the cover The sheets 32 and 33 are bonded more firmly. Thereby, even when the absorber 3 absorbs the liquid and expands in the thickness direction, the thickness hardly changes, and the liquid easily flows in the absorber 3.
  • the point-like pressing part 30 has the opening 302 in the non-skin side of the thickness direction, it has the to-be-squeezed surface 301 on the opposite side (skin side) of the opening 302 in the thickness direction.
  • the pressed surface 301 is a surface formed by pressing the non-skin side surface of the absorbent body 3.
  • the surface to be squeezed 301 is provided on the non-skin side in the thickness direction, and the skin side in the thickness direction Will have an opening 302.
  • the point-like pressing part 30 is formed using a pin having a circular cross section, the pressed surface 301 and the opening 302 have a circular shape, but the cross section is not necessarily circular. It is not necessary to form the point-like compressed part 30 using a pin.
  • the point-like compressed part 30 may be formed using a pin whose cross section is a star shape, a rectangular shape, or an elliptical shape.
  • the size of the compressed surface 301 is smaller than the size of the opening 302 in plan view. That is, the diameter Wd of the pressed surface 301 is smaller than the diameter Wm of the opening 302 (Wd ⁇ Wm).
  • the point-like compressed portion 30 is formed such that the outer diameter dimension gradually decreases from the non-skin side in the thickness direction toward the skin side. This is a phenomenon that occurs with the formation process of the point-like compressed portion 30, and the size of the pressed surface 301 does not necessarily have to be smaller than the opening 302.
  • the diameter Wd of the to-be-compressed surface 301 it is desirable that they are 0.4 mm or more and 4.0 mm or less. This is because when the diameter Wd is smaller than 0.4 mm, there is a possibility of penetrating the absorbent body 3 in the thickness direction when the point-like compressed portion 30 is formed, and the diameter Wd is larger than 4.0 mm. In this case, the width of the flow path formed between the point-like compressed parts 30 is increased, and the high-density portion in the absorber 3 is reduced, so that it is difficult to quickly diffuse the liquid into the absorber 3.
  • the point-like compressed portion 30 can be formed without penetrating the absorbent body 3 in the thickness direction, and the liquid in the absorbent body 3 can be formed. It is possible to flow smoothly.
  • the width dimension in any direction in the plan view is the diameter.
  • the compressed surface 301 and the opening 302 have a rectangular shape having a long side and a short side. It will be different.
  • the compressed surface 301 and the opening 302 having shapes such that the width dimension in plan view varies depending on the direction, the following description will be given in consideration of the widest width dimension of the compressed surface 301 and the opening 302. To do.
  • the distance Wc between the centers 301 c of the compressed surfaces 301 is longer than the diameter Wd as the widest width of the compressed surface 301.
  • the center 301c of the surface to be compressed 301 refers to a point equidistant from each vertex and each side in the shape of the surface to be compressed 301.
  • the center of the said circle is shown.
  • the distance Wc is more preferably 1 mm or more and 10 mm or less.
  • the distance Wc is shorter than 1 mm, the gap formed between the point-like compressed parts 30 may be crushed and it may not be possible to secure a flow path through which the liquid flows.
  • the distance Wc is longer than 10 mm, The high density portion in the absorber 3 is reduced, and it becomes difficult to quickly diffuse the liquid into the absorber 3. Therefore, when the distance Wc is 1 mm or more and 10 mm or less, it is possible to secure a flow path necessary for the liquid to flow, and to smoothly flow the liquid in the absorber 3. .
  • the absorbent body 3 is disposed adjacent to the first point-like compressed portion 30 a at least partially overlapping the folding induction region 3 a and the first point-like compressed portion 30 a, and at least partially folded. It has the 2nd point-like pressing part 30b which has overlapped with field 3a.
  • the 1st point-like pressing part 30a which the whole overlaps with the folding induction
  • the shape pressing part 30b is shown as an example.
  • the absorber 3 does not necessarily need to have the point-like pressing part 30 applicable to the 1st point-like pressing part 30a and the 2nd point-like pressing part 30b, the 1st point-like pressing part 30a and the 2nd point-like pressing part. Since the flow path for the liquid absorbed by the absorber 3 to flow by having the pressing part 30b can be formed in the folding induction region 3a, the excretion opening 60a (see FIG. 6) in the folding induction region 3a The liquid does not accumulate in the contact portion of the liquid, and the liquid easily diffuses throughout the folding induction region 3a, and the collapse of the bent shape of the absorber 3 can be suppressed, and the bent shape can be stably maintained. .
  • the diameter Wm as the widest width of the opening 302 of the point-like compressed portion 30 is narrower than the dimension Wa (Wa 1 + Wa 2 in FIG. 5) in the width direction of the folding guide region 3a.
  • the plurality of point-like compressed parts 30 are arranged at equal intervals in the longitudinal direction and the width direction, respectively, and have a staggered arrangement pattern (see FIG. 4). More specifically, as shown in FIG. 8, the distance Wi between the nearest point-like compressed parts 30 adjacent in the longitudinal direction and the distance Ws between the nearest point-like compressed parts 30 adjacent in the width direction are as follows.
  • a plurality of dot-like pressing parts 30 are arranged so as to be equal.
  • the several point-like pressing part 30 does not necessarily need to be formed uniformly, while making it flow in the longitudinal direction in the absorber 3 smoothly by forming in this way, absorption is also carried out. It is also possible to ensure rigidity in the width direction of the body 3.
  • FIG. 9 is an enlarged schematic view of the periphery of the folding induction region 3a when the absorber 3A according to the modification of the present invention is viewed from the non-skin side in the thickness direction.
  • symbol is attached
  • the point-like compressed part 300 is formed in an elliptical shape having a long diameter in the longitudinal direction. That is, the dimension Wm 1 in the longitudinal direction of the point-like compressed part 300 is formed longer than the dimension Wm 2 in the width direction.
  • punctate pressing part 300 is an elliptical shape which has a long diameter in a longitudinal direction, it is not restricted to this, For example, the rectangular shape which has a long side in a longitudinal direction may be sufficient, and a dotted
  • the dimension Wm 1 in the longitudinal direction of 300 only needs to be longer than the dimension Wm 2 in the width direction.
  • the dimension Wm 1 in the longitudinal direction of the point-like compressed part 300 is not necessarily formed longer than the dimension Wm 2 in the width direction, and the distance Wj between the nearest point-like compressed parts 300 adjacent in the longitudinal direction. It is only necessary that the plurality of point-like compressed parts 300 be arranged so as to be shorter than the distance Wb between the nearest point-like compressed parts 300 adjacent in the width direction. As a result, the liquid can flow more easily in the longitudinal direction than in the width direction in the absorbent body 3, and the liquid can be diffused into the absorbent body 3 in a shorter time.
  • the distance Wj between the point-like compressed parts 300 in the longitudinal direction without changing the distance between the centers of the adjacent point-like compressed parts 300 by making the point-like compressed parts 300 elliptical or rectangular as described above. Can be shortened.

Landscapes

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

Abstract

L'invention concerne une serviette hygiénique (1) pourvue d'une direction d'épaisseur, d'une direction transversale et d'une direction longitudinale, et étant également équipée d'un corps absorbant (3) pour absorber un liquide, le corps absorbant (3) présentant une ligne de pliage (3L) qui induit le pliage, faisant saillie vers le côté peau dans la direction de l'épaisseur, et s'étendant depuis l'une de ses extrémités jusqu'à son autre extrémité en direction longitudinale.
PCT/JP2015/084775 2015-03-31 2015-12-11 Article absorbant WO2016157637A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
KR1020177031436A KR102512664B1 (ko) 2015-03-31 2015-12-11 흡수성 물품
CN201580078472.1A CN107427392A (zh) 2015-03-31 2015-12-11 吸收性物品
MYPI2017703319A MY182997A (en) 2015-03-31 2015-12-11 Absorbent article

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2015070647A JP5978341B1 (ja) 2015-03-31 2015-03-31 吸収性物品
JP2015-070647 2015-03-31

Publications (1)

Publication Number Publication Date
WO2016157637A1 true WO2016157637A1 (fr) 2016-10-06

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PCT/JP2015/084775 WO2016157637A1 (fr) 2015-03-31 2015-12-11 Article absorbant

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JP (1) JP5978341B1 (fr)
KR (1) KR102512664B1 (fr)
CN (1) CN107427392A (fr)
MY (1) MY182997A (fr)
WO (1) WO2016157637A1 (fr)

Cited By (1)

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CN109843236A (zh) * 2016-11-04 2019-06-04 尤妮佳股份有限公司 吸收性物品的吸收体的制造方法及制造装置

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JP6220805B2 (ja) * 2015-03-31 2017-10-25 ユニ・チャーム株式会社 吸収性物品及び吸収性物品の製造方法
JP6111304B1 (ja) * 2015-09-29 2017-04-05 ユニ・チャーム株式会社 吸収性物品
JP6346261B1 (ja) * 2016-12-28 2018-06-20 ユニ・チャーム株式会社 吸収性物品
CN111150555B (zh) * 2018-11-08 2023-05-09 尤妮佳股份有限公司 吸收性物品

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Also Published As

Publication number Publication date
KR20170132848A (ko) 2017-12-04
CN107427392A (zh) 2017-12-01
KR102512664B1 (ko) 2023-03-21
MY182997A (en) 2021-02-05
JP2016189853A (ja) 2016-11-10
JP5978341B1 (ja) 2016-08-24

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