WO2017056611A1 - Article absorbant - Google Patents

Article absorbant Download PDF

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Publication number
WO2017056611A1
WO2017056611A1 PCT/JP2016/069460 JP2016069460W WO2017056611A1 WO 2017056611 A1 WO2017056611 A1 WO 2017056611A1 JP 2016069460 W JP2016069460 W JP 2016069460W WO 2017056611 A1 WO2017056611 A1 WO 2017056611A1
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WO
WIPO (PCT)
Prior art keywords
liquid
absorbent
point
width direction
skin side
Prior art date
Application number
PCT/JP2016/069460
Other languages
English (en)
Japanese (ja)
Inventor
工藤　淳
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
Publication of WO2017056611A1 publication Critical patent/WO2017056611A1/fr

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • 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
    • 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
    • A61F13/476—Sanitary towels, incontinence pads or napkins characterised by encircling the crotch region of the undergarment
    • 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

Definitions

  • the present invention relates to an absorbent article.
  • Sanitary napkins are known as absorbent articles that absorb excreted fluid such as menstrual blood.
  • This sanitary napkin has a longitudinal direction, a width direction, and a thickness direction perpendicular to each other, and a liquid absorbent fiber is a main material between a liquid-permeable top sheet and a liquid-impermeable back sheet. It has an absorber (absorbent core).
  • Patent Document 1 describes that a large number of convex portions and a plurality of pressure-bonding portions are provided in the excretory portion-facing region on the surface of the absorbent article to improve the excretion fluid absorbability. Has been.
  • the present invention has been made in view of the above problems, and an absorbent article having a shape corresponding to the user's body while maintaining good liquid absorbency when the absorbent article is worn. It is to provide.
  • the main invention for achieving the above object is: An absorbent article having a longitudinal direction, a width direction, and a thickness direction orthogonal to each other, and having a liquid absorbent fiber, and a liquid permeable sheet covering the absorbent body from the skin side in the thickness direction.
  • the said absorber has one linear guidance part along the longitudinal direction for guiding it to bend to the skin side of the thickness direction in the central part of the width direction
  • the absorber has a plurality of point-like pressing parts on both sides in the width direction of the linear guiding part, and the linear guiding part includes a recess on at least one of the skin side and the non-skin side, and the liquid
  • the density of the absorbent fibers is higher in the central portion than in the end portions
  • the squeezed squeezed portion includes a recess on at least one of the skin side and the non-skin side
  • the density is higher in the center portion than in the end portion
  • the linear guide portion The central position in the thickness direction of the central portion is an absorbent article characterized by being located on the skin side in the thickness direction from the central position in the thickness direction of the central portion of the point-like compressed portion.
  • the present invention by bending to the skin side by the linear guiding portion, it can be brought into contact with the user's vaginal opening, and the density of the liquid absorbent fibers of the linear guiding portion and the point-like compressed portion is respectively
  • the central part is higher than the end part, and the central position in the thickness direction of the central part of the linear guide part is provided on the skin side in the thickness direction from the central position in the thickness direction of the central part of the dotted compression part. Therefore, the excretory fluid absorbed by the linear guiding part is moved from the skin side to the non-skin side and absorbed on the non-skin side, thereby improving the fit of the absorbent article and improving the fit of the user. The risk of pleasantness and rough skin can be reduced.
  • FIG. 1 is a front view of the sanitary napkin 1 as viewed from the skin side in the thickness direction.
  • FIG. 2 is a plan view of the napkin 1 viewed from the non-skin side in the thickness direction.
  • FIG. 3 is a schematic cross section taken along line AA in FIG.
  • FIG. 4 is a plan view of the absorbent body 10 as seen from the non-skin side in the thickness direction.
  • FIG. 5A is a diagram for explaining the arrangement of the absorber squeezed portion ED10.
  • Drawing 5B is a figure explaining arrangement of main part point crushing part ED20.
  • FIG. 6 is a diagram illustrating a usage mode of the napkin 1.
  • FIG. 1 is a front view of the sanitary napkin 1 as viewed from the skin side in the thickness direction.
  • FIG. 2 is a plan view of the napkin 1 viewed from the non-skin side in the thickness direction.
  • FIG. 3 is a schematic cross section taken along line AA in FIG.
  • FIG. 4 is
  • FIG. 7A is a schematic cross-sectional view in which an absorber point squeezed portion ED10 is formed in a portion of the absorber 10 indicated by arrows BB in FIG.
  • FIG. 7B is a schematic cross-sectional view in which the linear guiding portion 15 is formed in the absorber 10 at the portion indicated by the arrow BB in FIG.
  • FIG. 7C is a schematic cross-sectional view in which the top sheet 20 and the back sheet 30 are laminated on the absorber 10 at the portion indicated by arrows BB in FIG.
  • FIG. 7D is a schematic cross-sectional view in which a main body point-like compressed portion ED20 is formed on the napkin 1 shown by the arrow BB in FIG. FIG.
  • FIG. 8 is a schematic cross-sectional view of the absorber point pressing unit ED10 and the linear guiding unit 15 in FIG. 7D.
  • FIG. 9 is a diagram for explaining the shape of the portion of the linear guide wire 15 indicated by the arrow CC in FIG.
  • FIG. 10 is a schematic diagram of the absorber squeezed portion ED10 viewed from the skin side in the thickness direction of the absorber 10.
  • An absorbent article having a longitudinal direction, a width direction, and a thickness direction orthogonal to each other, and having a liquid absorbent fiber, and a liquid permeable sheet covering the absorbent body from the skin side in the thickness direction.
  • the said absorber has one linear guidance part along the longitudinal direction for guiding it to bend to the skin side of the thickness direction in the central part of the width direction
  • the absorber has a plurality of point-like pressing parts on both sides in the width direction of the linear guiding part, and the linear guiding part includes a recess on at least one of the skin side and the non-skin side, and the liquid
  • the density of the absorbent fibers is higher in the central portion than in the end portions
  • the squeezed squeezed portion includes a recess on at least one of the skin side and the non-skin side
  • the density is higher in the center portion than in the end portion
  • the linear guide portion The center position in the thickness direction of the center portion is an absorbent article characterized in that it is located on the skin side in the thickness direction from the center position in the thickness direction of the center portion of the point-like compressed portion. .
  • an absorbent article it can be brought into contact with the excretion opening such as the vagina mouth of the user by being bent to the skin side by the linear guide portion, and the liquid of the linear guide portion and the point-like compressed portion.
  • the density of the absorbent fibers is higher at the center part than at the end part, and the center position in the thickness direction of the center part of the linear guide part is higher than the center position in the thickness direction of the center part of the point-like compressed part,
  • the density of the liquid absorbent fiber is higher in the central portion of the pointed compressed portion than in the central portion of the linear guiding portion.
  • the excretory fluid first absorbed by the linear guiding portion. Can be diffused into a denser point-like compressed portion.
  • a liquid-impermeable sheet that covers the absorbent body from the non-skin side in the thickness direction, and a wing portion that protrudes outward from the liquid-impermeable sheet in the width direction.
  • a wing adhesive portion for fixing the wing portion to underwear is provided, and the length of the linear guide portion in the longitudinal direction is It is desirable that the length of the wing bonding portion is longer than the length in the longitudinal direction.
  • the absorbent article is provided with a plurality of folding parts along the width direction for folding the liquid-permeable sheet inside, and the longitudinal direction of the linear guide part.
  • One end in the direction is provided on the outer side in the longitudinal direction from the folding portion of the plurality of folding portions, and the other end in the longitudinal direction of the linear guide portion is out of the plurality of folding portions. It is desirable that the other folding part is provided outside in the longitudinal direction.
  • one end in the longitudinal direction of the linear guide portion is provided on the outer side in the longitudinal direction from a fold portion of the plurality of fold portions, and the other end in the longitudinal direction of the linear guide portion.
  • the outer side in the longitudinal direction from the other folds of the plurality of folds it is possible to reduce the risk of excretion being blocked by the folds.
  • the point-like squeezed portion of the point-like squeezed portion in the longitudinal direction, is provided at the same position as the one end of the linear guiding portion in the longitudinal direction or outside the one end.
  • the other point-like squeezed portion of the point-like squeezed portion is provided at the same position as the other end in the longitudinal direction of the linear guide portion or outside the other end.
  • a point-like squeezed portion is provided among the point-like squeezed portions at the same position as the one end in the longitudinal direction of the linear guiding portion, or outside the one end.
  • the distance from the skin side surface of the absorbent article to the linear guide portion at the center in the width direction of the linear guide portion is the linear guide from the non-skin side surface of the absorbent article. It is desirable to be smaller than the distance to the part.
  • the distance from the skin side surface of the absorbent article to the linear guide part is determined from the non-skin side surface of the absorbent article to the linear guide part.
  • the central portion and the point-like squeezed portion in the linear guide portion between the linear guide portion and the point-like compressed portion adjacent to the linear guide portion and the width direction are provided.
  • the central part in the linear induction part and the central part in the point-like compressed part By providing a region having a density of liquid absorbent fibers lower than the density of the liquid absorbent fibers, the region having a low density of liquid absorbent fibers can store the excretory fluid, so that it is absorbed by the linear guide portion.
  • the excreted fluid that has been collected can be stored, and the stored excretory fluid can be used as a flow path that is absorbed by the point-like compressed portion.
  • an interval between edges of the point-like compressed parts adjacent to each other in the width direction is preferably shorter than a length of the point-like compressed part.
  • the length in the longitudinal direction of the point-like compressed portion is longer than the length in the width direction.
  • the liquid can be diffused more in the longitudinal direction, and the width direction of the absorbent article It is possible to prevent the liquid from leaking from the outside.
  • the absorbent body includes an absorbent core and a sheet member provided on the skin side of the absorbent core, and the plurality of point-like compressed parts include the absorbent body and the liquid.
  • the plurality of main body point-like compressed parts joining the permeable sheet, and the plurality of absorbent body point-like compressed parts joining the absorbent core and the sheet member It is desirable that the distance between the centers of the absorbent point squeezed parts adjacent in the width direction is narrower than the distance between the centers of the main body point squeezed parts adjacent in the width direction.
  • the absorption per unit area of the absorber is reduced by narrowing the interval between the centers of the adjacent absorber squeezed compression portions than the interval between the centers of the adjacent main body punctate pressing portions. While the number of body point-like compressed parts can be increased and the rigidity of the absorbent body can be further improved, the number of the body point-like compressed parts is relatively small so that the absorbent article has a clean appearance. Can be given.
  • a plurality of the absorber point compression parts are the absorber point compression parts in which the most concave portion from the skin side is separated from the liquid permeable sheet by a predetermined distance in the thickness direction. It is desirable to have a part.
  • the plurality of absorber recesses have the absorber pressing portion in which the most recessed portion is separated from the liquid-permeable sheet by a predetermined distance in the thickness direction, so that liquid can be obtained.
  • a portion where the absorbed absorber and the liquid permeable sheet are not in contact with each other is provided, and stickiness due to liquid on the surface of the liquid permeable sheet can be reduced.
  • the linear guide portion has a first region and a second region adjacent to each other in the longitudinal direction, and the first region has a higher density of the liquid absorbent fiber than the second region. It is desirable.
  • the linear guide portion has the first region and the second region in which the density of the liquid absorbent fiber is different in the longitudinal direction, thereby further promoting the diffusion of excretory fluid in the longitudinal direction. be able to.
  • the interval between the centers of the point-like compressed portions adjacent to each other in the width direction is uniform.
  • the center interval between the point-like compressed portions adjacent in the longitudinal direction is shorter than the center interval between the point-like pressed portions adjacent in the width direction.
  • variety in an absorber is made by making the space
  • sanitary napkin 1 (hereinafter referred to as “napkin 1”) will be described as an example of the absorbent article according to the present embodiment.
  • a sanitary napkin will be described as an example of the absorbent article, but the absorbent article of the present embodiment also includes a so-called cage sheet (for example, a panty liner) and the like. It is not limited to napkins.
  • FIG. 1 is a front view of the sanitary napkin 1 as seen from the skin side in the thickness direction.
  • FIG. 2 is a plan view of the napkin 1 viewed from the non-skin side in the thickness direction.
  • FIG. 3 is a schematic cross section taken along line AA in FIG.
  • the “longitudinal direction” along the product longitudinal direction of the napkin 1 the “width direction” orthogonal to the longitudinal direction along the product lateral direction of the napkin 1, the longitudinal direction and the width direction, respectively. It is defined as the “thickness direction” orthogonal to each other.
  • the longitudinal direction has a “front side” that is the stomach side of the user when the napkin 1 is used, and a “rear side” that is the back side of the user.
  • the thickness direction is the “skin side” (also referred to as “upper side”), which is the side that contacts the wearer's skin when the napkin 1 is worn (also referred to as “upper side”), and the opposite side (lower side in FIG. 3). And “non-skin side” (also referred to as “lower side”).
  • the XX line is the center line in the width direction
  • the YY line is the center line in the thickness direction.
  • the napkin 1 is a sheet-like member having a vertically long shape in plan view, and a liquid-permeable top sheet 20, a liquid-absorbing absorber 10, and a liquid-impermeable back sheet 30 from the skin side in the thickness direction. They are laminated in order toward the non-skin side (see FIG. 3).
  • Each of the members 20, 10, and 30 is joined to a member adjacent in the thickness direction with an adhesive HMA such as a hot melt adhesive.
  • the planar shape of the top sheet 20 and the back sheet 30 is the same shape, and the planar size is larger than the planar size of the absorbent body 10.
  • maintains between both sheets 20 and 30 by joining the outer-periphery edge parts 20e and 30e of both sheets 20 and 30 by adhesion
  • the wing part which is a fixing part provided when the napkin 1 is placed and fixed on an undergarment (not shown), has a substantially central portion in the longitudinal direction of the top sheet 20 and the back sheet 30 extending outward in the width direction. 20w and 30w are formed.
  • the absorbent body 10 has an absorbent core 11, a skin side sheet 12, and a non-skin side sheet 13.
  • the absorptive core 11 is a member that absorbs and holds liquid (excretion fluid) such as menstrual blood.
  • the absorbent core 11 has cellulosic absorbent fibers, which are liquid absorbent fibers, and thermoplastic resin fibers, and these fibers are mixed with each other in a plan view as shown by a broken line in FIG. It is formed into a vertically long shape.
  • pulp fibers or the like are used as the liquid absorbent fibers
  • composite fibers having a so-called sheath core structure in which the sheath is polyethylene (PE) and the core is polyethylene terephthalate (PET) are used as the thermoplastic resin fibers.
  • a rayon fiber may be used as this liquid absorptive fiber
  • a single fiber of polypropylene (PP) or a single fiber of PE may be used as the thermoplastic resin fiber.
  • PP polypropylene
  • PE polypropylene
  • PE polypropylene
  • PE polypropylene
  • the skin side sheet 12 is a sheet member having substantially the same shape as the absorbent core 11 and is joined by an adhesive HMA so as to cover the skin side surface of the absorbent core 11 (FIG. 3).
  • a flexible sheet having excellent liquid permeability such as a nonwoven fabric such as an air-through nonwoven fabric or a tissue paper
  • the non-skin side sheet 13 is a sheet member having substantially the same shape as the absorbent core 11 and is joined by an adhesive HMA so as to cover the non-skin side surface of the absorbent core 11 (FIG. 3).
  • a non-woven fabric such as SMS (spunbond / meltblown / spunbond) non-woven fabric or a flexible sheet such as tissue paper is used.
  • FIG. 4 is a plan view of the absorber 10 as seen from the non-skin side in the thickness direction.
  • the absorbent body 10 is provided with a plurality of absorbent body point pressing parts ED ⁇ b> 10, and the rigidity of the absorbent body 10 is increased.
  • the planar shape of the absorber squeezed portion ED10 is an ellipse and is a staggered arrangement pattern, but this is not a limitation.
  • the absorber 10 is a so-called thin absorber having a thickness of 3 mm or less, preferably 2 mm or less, by the absorber point-like pressing part ED10.
  • the absorber 10 is formed with a linear guide portion 15 along the longitudinal direction at the center in the width direction.
  • the linear guide part 15 is a pressing part formed in a straight line over the entire length in the longitudinal direction of the absorbent body 10, so that the absorbent body 10 bends to the skin side in the thickness direction starting from the linear guide part 15. Be guided to.
  • the top sheet 20 is a member that comes into contact with the user's skin when the napkin 1 is used, and allows liquid such as menstrual blood to permeate from the skin side in the thickness direction to the non-skin side and move to the absorber.
  • a liquid-permeable flexible sheet of an appropriate nonwoven fabric such as an air-through nonwoven fabric is used.
  • a plurality of pressing parts (a linear pressing part EL20 and a main body point pressing part ED20) are formed on the skin side surface of the top sheet 20 from the skin side. And the absorber 10 are squeezed together in the thickness direction and joined and integrated.
  • a plurality of linear compressed parts EL20 are formed along the outer peripheral edge of the absorbent body 10, and have a substantially annular shape that is long in the longitudinal direction as a whole.
  • the main body point squeezed portions ED20 are discretely formed in a substantially closed region where the linear squeezed portion EL20 divides on the top sheet 20.
  • the main body point squeezed portion ED20 has an elliptical shape, but is not limited thereto.
  • the back sheet 30 suppresses the liquid permeated through the top sheet 20 and absorbed by the absorbent body 10 when the napkin 1 is used from exuding to the clothing side (non-skin side) such as underwear.
  • a liquid-impermeable flexible sheet of an appropriate resin film such as polyethylene (PE) is used.
  • a wing adhesive portion 40 w and a main body adhesive portion 40 c for attaching and fixing the napkin 1 to underwear or the like when the napkin 1 is used.
  • the wing bonding portion 40w is a pair of bonding portions formed in a substantially rectangular shape on the non-skin surface side of the wing portion 30w of the backsheet 30.
  • the main body bonding portion 40c is formed in a portion between the pair of wing bonding portions 40w in the width direction, for example, as shown in FIG. 2, in a portion where the back sheet 30 and the absorbent body 10 overlap with each other. It is formed by applying an appropriate adhesive HMA to the band-shaped region.
  • the absorbent body 10 When the napkin 1 is used, the absorbent body 10 is positioned with respect to the user's body by attaching the napkin 1 together with the underwear while the main body adhesive portion 30c is attached to the inside of the crotch portion (crotch portion) of the underwear. Do not slip.
  • the wing bonding portion 40w is formed in, for example, a substantially rectangular shape by applying an appropriate adhesive HMA to the region of the wing portion 30w.
  • the napkin 1 When the napkin 1 is used, the napkin 1 is fixed so that the wing portion 30w (20w) is bent to the non-skin side and the wing adhesive portion 40w is affixed to the outside of the crotch portion of the underwear. Suppress.
  • FIG. 5A is a diagram for explaining the arrangement of the absorber point compression unit ED10.
  • Drawing 5B is a figure explaining arrangement of main part point crushing part ED20.
  • the thickness of the absorbent body 10 is suppressed to 3 mm or less and the rigidity is secured by forming the absorbent body point squeezed portion ED10 over the entire region of the absorbent body 10.
  • the absorbent body 10 absorbs excretory fluid such as menstrual blood when the napkin 1 is used, the absorbent body 10 is suppressed from expanding in the thickness direction.
  • punctate pressing parts ED10 adjacent to the width direction and a longitudinal direction is formed equally.
  • the planar shape of main body point pressing part ED20 is an ellipse, it is provided discretely, the top sheet 20 and the absorber 10 are joined more strongly, and it is at the time of use etc. Further, the top sheet 20 and the absorbent body 10 are prevented from peeling off.
  • the center interval s10 between the adjacent absorbent point squeezed portions ED10 is narrower than the center interval s20 between the adjacent main body point squeezed portions ED20.
  • the number of pressing parts (ED10) per unit area of the absorber 10 increases, and the rigidity of the absorber 10 can be further improved.
  • the number of main body point pressing parts ED20 which can be visually recognized from the external appearance of the napkin 1 is less than the absorber point pressing part ED10, the impression on the external appearance of the napkin 1 can be made clearer.
  • FIG. 6 is a diagram illustrating a usage mode of the napkin 1.
  • absorber point squeezing part ED10 and main part point squeezing part ED20 are each point squeezing parts, and all are "point squeezing parts".
  • spot-like here includes the area
  • punctate pressing part ED10 is provided by squeezing in the thickness direction from the skin side or a non-skin side, and is a dotted
  • the linear guide part 15 is a linear pressing part along the longitudinal direction, and includes regions formed on both sides of the center line in the width direction of the absorbent body 10.
  • the linear guide part 15 is substantially rectangular and has a predetermined area.
  • derivation part 15 is a linear recessed part with which the non-skin side was dented provided by pressing in the thickness direction from the non-skin side.
  • FIGS. 7A to 7D are diagrams illustrating the formation of the point-like compressed parts ED10 and ED20 and the linear guide part 15.
  • FIG. 7A is a schematic cross-sectional view in which an absorber point squeezed portion ED10 is formed in a portion of the absorber 10 indicated by arrows BB in FIG.
  • FIG. 7B is a schematic cross-sectional view in which the linear guiding portion 15 is formed in the absorber 10 at the portion indicated by the arrow BB in FIG.
  • FIG. 7C is a schematic cross-sectional view in which the top sheet 20 and the back sheet 30 are laminated on the absorber 10 at the portion indicated by arrows BB in FIG.
  • FIG. 7D is a schematic cross-sectional view in which a main body point-like compressed portion ED20 is formed on the napkin 1 shown by the arrow BB in FIG. 7A, 7B, and 7C, the yy line is the center line of the absorber 10 in the thickness direction, and YY in FIG. 7D is the center line of the napkin 1 in the thickness direction. .
  • the absorber point pressing part ED10 is formed.
  • the absorbent body 10 before processing has a thickness t10 over the entire region.
  • Absorber punctate pressing part ED10 is formed by performing pressing processing.
  • the absorbent body 10 obtained by squeezing the absorbent spot-shaped compressed portion ED10 has a compressed area b and an uncompressed area a.
  • the center in the width direction of the region a has a thickness close to t10 or t10 in the thickness direction.
  • the absorbent spot-like compressed portion ED10 that is recessed from each of the skin side and the non-skin side in the thickness direction is formed.
  • the absorber squeezed portion ED10 is located at a substantially central portion in the thickness direction of the absorber 10.
  • punctate pressing part ED10 area
  • a liquid absorptive fiber is crushed by pressing and the density of a liquid absorptive fiber becomes higher than the area
  • derivation part 15 is formed by shaping and squeezing the center part of the width direction about the absorber 10 which formed the absorber dotted
  • the non-absorbent body 10 is provided on the skin side of the absorbent body 10 and has a convex roller (not shown) having a convex portion and a concave portion (groove portion) at a position facing the convex portion of the convex roller.
  • derivation part 15 is formed by letting the absorber 10 pass to the roll gap
  • the absorbent body 10 obtained by shaping and pressing the linear induction guiding portion 15 has a region c in which the linear induction portion 15 is newly formed.
  • the region c is recessed from each of the skin side and the non-skin side in the thickness direction.
  • the center in the width direction of the linear guiding portion 15 is the center cc
  • the thickness in the thickness direction of the center cc that is, the region c
  • the distance t15 between the upper surface 15t and the lower surface 15b of the linear guide portion 15 at the center cc is smaller than t10.
  • the linear guide portion 15 is located closer to the skin side in the thickness direction.
  • derivation part 15 the liquid absorptive fiber is crushed by pressing and the density of a liquid absorptive fiber becomes higher than the area
  • tED10 becomes smaller than t15 (tED10 ⁇ t15), and the density of the liquid absorbent fiber at the center bc of the absorber squeeze portion ED10 is equal to the liquid absorbent fiber at the center cc of the linear guide portion 15.
  • the density of the liquid absorbent fibers is higher in the region b than in the region c as a whole.
  • the top sheet 20 is laminated from the skin side of the absorbent body 10, and is fixed by the adhesive HMA. Note that the adhesive HMA is omitted in FIGS. 7C and 7D.
  • the main body point squeezed portion ED20 is formed.
  • the top sheet 20 and the absorbent body 10 are squeezed together in the thickness direction from above the top sheet 20 to form the main body point-like squeezed portion ED20.
  • the napkin 1 is passed through a roll gap between a convex roller (not shown) having a plurality of protrusions and an anvil roller (not shown) having a flat surface, and pressing is performed from the skin side of the napkin 1. ( Figure 7D).
  • the back sheet 30 is laminated from the non-skin side, and the napkin 1 is formed by being fixed with the adhesive HMA.
  • the napkin 1 obtained by squeezing the main body point squeezed portion ED20 has a region d in which the main body point squeezed portion ED20 is newly formed.
  • the region d is recessed from each of the skin side and the non-skin side in the thickness direction, and when the center in the width direction of the main body squeezed compressed part ED20 is the center dc, the thickness in the thickness direction of the center dc, that is, the region
  • the distance tED20 between the upper surface ED20t and the lower surface ED20b of the main body point-like compressed part ED20 at the center dc of d is smaller than t10.
  • main body squeezed portion ED20 is located at a substantially central portion in the thickness direction of the napkin 1. Moreover, as for main body dotted
  • tED10 becomes larger than tED20 (tED10> tED20).
  • main body point squeeze part ED20 may be formed further from some absorber point squeeze parts ED10 among some absorber point squeeze parts ED10, it is not restricted to this.
  • Absorber point squeezing part ED10 and main part point squeezing part ED20 may be provided in each arbitrary position, and even if these point squeezing parts ED10 and ED20 are formed in the same position, they are provided in different positions. Also good.
  • a space S is formed as shown in 7D.
  • the upper surface ED10t of the absorber point-shaped compressed portion ED10 and the top sheet 20 are separated by a predetermined distance, and a space S is formed between the upper surface ED10t and the top sheet 20.
  • the space S forms a portion where the absorbent body 10 and the top sheet 20 do not come into contact with each other. Therefore, the absorbent body 10 in which the liquid is absorbed and the top sheet 20 located on the skin side do not come into direct contact, and the liquid is sticky. Can be reduced, and the discomfort felt by the user's skin can be reduced.
  • FIG. 8 is a schematic cross-sectional view of the absorber point pressing unit ED10 and the linear guiding unit 15 in FIG. 7D.
  • FIG. 9 is a diagram for explaining the shape of the portion of the linear guide wire 15 indicated by the arrow CC in FIG.
  • the distance from the skin side surface of the napkin 1 to the linear guide portion 15 is smaller than the distance from the non-skin side surface to the linear guide portion 15 at the center cc in the width direction of the linear guide portion 15. . That is, in the center cc of the region c, when the distance from the upper surface of the top sheet 20 to the upper surface 15t of the linear guide portion is L1, and the distance from the lower surface of the back sheet 30 to the lower surface 15b of the linear guide portion 15 is L2, L1 is smaller than L2 (L1 ⁇ L2).
  • derivation part 15 (center part of the area
  • the point bED10 of the absorber point compression unit ED10 is provided closer to the center YY in the thickness direction of the napkin 1.
  • the point bED10 of the absorber point squeezed portion ED10 is provided in the center of the napkin 1 in the thickness direction in the thickness direction.
  • the liquid discharged from the excretion opening such as the vaginal opening is first absorbed by the linear guiding portion 15 (region c) close to the excretion opening.
  • the liquid absorbed by the linear guiding portion 15 is stored in a low region (region a) of the liquid absorbent fiber adjacent to the linear guiding portion 15.
  • the absorbent spot-shaped compressed portion ED10 region b) absorbs the liquid stored in the region (region a) where the density of the liquid absorbent fibers is low.
  • the liquid which absorber squeezed pressing part ED10 absorbed is stored in the field (area a) where the density of the liquid absorptive fiber adjacent to absorber squeezing part ED10 is low.
  • the liquid is diffused over a wider area of the absorbent body 10 by repeating the movement of the liquid between the absorbent body point-like compressed portion ED10 (area b) and the low density area (region a) of the liquid absorbent fibers. Details of the movement of the liquid will be described later.
  • punctate pressing part ED10 is based on "capillary phenomenon”.
  • “Capillary phenomenon” is also called “capillary phenomenon” and means that the degree of rise or fall of the liquid level in the pipe is proportional to the surface tension of the liquid and inversely proportional to the inner diameter of the pipe.
  • the space between the fibers corresponds to a tube, and refers to a phenomenon in which liquid permeates through a narrow space between the fibers regardless of gravity or top / bottom / left / right. The narrower the is, the faster the liquid penetrates.
  • the area c where the linear guide portions 15 are formed has a higher density of liquid absorbent fibers than the area a where the pressing process is not performed.
  • the density of the liquid absorbent fibers at the center in the width direction of the linear guide portion 15 is higher than the density of the liquid absorbent fibers at the end of the linear guide portion 15.
  • punctate pressing part ED10 was formed has a density of a liquid absorptive fiber higher than the area
  • the density of the liquid absorptive fiber of the center part in the width direction of absorber point squeeze part ED10 is higher than the density of the liquid absorptive fiber of the edge part of absorber point squeeze part ED10.
  • the density of the liquid absorbent fibers is higher in the central portion in the width direction of the absorbent point squeezed portion ED10 than in the central portion in the width direction of the linear guiding portion 15, and the region b is more liquid than the region c. High density of absorbent fibers.
  • the liquid discharged from the excretion opening such as the vaginal opening is first absorbed by the linear guide portion 15 having a high density of the liquid-absorbing fibers, so that it can be absorbed quickly.
  • the thickness of the linear guiding portion 15 is relatively thin.
  • maintains the absorbed liquid is falling
  • maintain is the area
  • the liquid absorbed by the linear guiding part 15 close to the skin side in the thickness direction moves toward the non-skin side by moving toward the area (a) where the density of the adjacent liquid absorbent fibers is low. Therefore, stickiness or the like caused by the liquid remaining on the surface of the linear guide portion 15 can be reduced, and the possibility that the user may feel uncomfortable or rough skin can be reduced.
  • the absorber squeeze ED10 adjacent to the low region (region a) of the liquid absorbent fiber absorbs the liquid stored in the low region (region a) of the adjacent liquid absorbent fiber.
  • the density of the liquid-absorbing fibers in the absorbent spot-like compressed portion ED10 (region b) is larger than that in the region a and the linear guiding portion 15 (region c), and therefore absorbs more liquid stored in the region a.
  • the diffusion of the liquid can be further promoted.
  • the absorber point pressing part ED10 is relatively thin with increasing density of the liquid absorbent fibers. Therefore, the ability to hold the absorbed liquid is reduced, and the liquid that has been absorbed by the absorber squeeze ED10 and can no longer be held is moved to a region (region a) where the density of the adjacent liquid absorbent fibers is low. Moving.
  • the linear guide portion 15 has irregularities along the longitudinal direction. Looking at a longitudinal sectional view of the linear guiding portion 15, as shown in FIG. 9, the linear guiding portion 15 is located on the skin side in the thickness direction, and the convex portion 15f and the concave portion are formed on the skin side. 15g is provided. Note that the linear guide portions 15 in FIGS. 7A to 7D and 8 show convex portions 15f.
  • This convex part 15f is an area
  • the linear guiding portion 15 is formed with convex portions 15f and concave portions 15g. ing.
  • the convex portions 15f and the concave portions 15g of the linear guiding portion 15 Due to the convex portions 15f and the concave portions 15g of the linear guiding portion 15, the convex portions 15f having a relatively low density of liquid absorbent fibers and the concave portions having a relatively high density of liquid absorbing fibers also in the linear guiding portion 15. 15g. Therefore, the liquid absorbed by the central portion of the linear guide portion 15 is absorbed by the concave portion 15g, and the liquid that cannot be held by the concave portion 15g moves to the adjacent convex portion f, and the convex portion 15f stores the liquid. . By moving the liquid that the adjacent concave portion 15g absorbs the liquid stored in the convex portion 15f, the absorbed liquid can be moved to the outside in the longitudinal direction, and the diffusion of the liquid can be promoted. it can.
  • the liquid is diffused toward a wide area of the absorber 10 by the movement of the liquid.
  • an absorbent article such as the napkin 1
  • the napkin 1 is used when the napkin 1 is used for a long time.
  • the liquid could not be absorbed sufficiently, and the liquid spread on the skin surface, which caused discomfort to the user.
  • the liquid can be diffused in a wider range of the absorbent body 10 by providing such a linear guiding portion 15 and the point-like pressing portions ED10 and ED20, the possibility of giving the user unpleasant feeling is reduced.
  • the napkin 1 can be used for a longer time.
  • the absorber point squeezed portion ED10 has a uniform center distance between the absorber point squeezed portions ED10 adjacent in the width direction at least in the width direction. Thereby, the rigidity of the absorber 10 can be easily made constant, and the diffusibility of the liquid can be made constant.
  • FIG. 10 is a schematic diagram of the absorber squeezed portion ED10 viewed from the skin side in the thickness direction of the absorber 10.
  • Wm1 has an elliptical shape longer than Wm2 (Wm1> Wm2).
  • Wm1 has a vertically long shape.
  • the liquid absorbed in the central part in the longitudinal direction and the width direction is diffused to the outside in the longitudinal direction of the absorbent body 10 to hold the liquid in a wide range of the absorbent body 10, so that the napkin 1 is kept for a longer time. It is desirable to be able to use it. Therefore, by making the shape of the absorbent point squeezed portion ED10 into an ellipse that is long in the longitudinal direction, a higher part of the liquid absorbent fiber is provided in the longitudinal direction, and the diffusion of the liquid in the longitudinal direction is further promoted. The possibility of liquid leaking from the outside in the width direction of the napkin 1 can be reduced.
  • Wb is preferably shorter than the length (Wm2) in the width direction of the absorber squeeze parts ED10 ( Wm2> Wb).
  • the interval Wj is greater than the interval Wb between the edges of the absorber squeezed portions ED10 adjacent in the width direction. It is preferable to be short (Wj ⁇ Wb). Thereby, the movement of the liquid between the absorber point squeezing parts ED10 adjacent in the longitudinal direction can be further promoted than the movement of the liquid between the absorber point squeezing parts ED10 adjacent in the width direction. It is possible to further promote the diffusion of the liquid toward the outside in the longitudinal direction.
  • the length of the linear guide portion 15 is longer than the length of the wing bonding portion 40w in the longitudinal direction.
  • derivation part 15 can make it easy to maintain the shape bent to the skin side, and can promote the spreading
  • the front end of the linear guiding portion 15 is provided in front of the front folding portion H, and the rear end of the linear guiding portion 15 is rearward of the rear folding portion H. It is preferable to provide on the side.
  • the folding part H is a folding area when the napkin 1 is transported and the like, when a packaging material is arranged on the outermost exterior and the top sheet 20 is folded inside.
  • a three-fold napkin 1 is shown, and a front folding part H is provided on the front side of the wing bonding part 40w, and a rear folding part H is provided on the rear side of the wing bonding part 40w.
  • the absorber point squeezed portion ED10 is provided at the same position as the front end of the linear guide portion 15 or outside the front end, and is the same as the rear end of the linear guide portion 15. It is preferable that the absorber point pressing part ED10 is also provided outside the position or rear end. As shown in FIG. 4, both the front end of the linear guide portion 15 and the absorbent point squeezed portion ED10 are formed up to the front end of the absorber 10, and in the longitudinal direction, the linear guide portion 15 Absorber squeezed portion ED10 is provided at the same position as the front end.
  • both the rear end of the linear guide portion 15 and the absorber point pressing portion ED10 are formed up to the rear end of the absorber 10, and are the same as the rear end of the absorber in the longitudinal direction.
  • Absorber point pressing part ED10 is provided in the position.
  • the absorbent body point squeezed portion ED10 and the main body point squeezed portion ED20 have an elliptical shape, but the present invention is not limited thereto.
  • a circular shape, a rhombus shape, or the like can be appropriately modified.
  • the liquid diffusibility can be adjusted by appropriately adjusting the shape, area, interval, and the like of the point-like compressed parts ED10 and ED20.
  • liquid diffusibility by the absorber squeeze part ED10 was demonstrated, it is not restricted to this.
  • the liquid diffusibility can also be improved by the main body squeezed portion ED20 (dot-like concave portion).
  • punctate pressing part ED10 does not necessarily need more, and the absorber dotted
  • sanitary napkins 1 sanitary napkins (napkins), 10 Absorber, 11 Absorbent core, 12 skin side sheet (sheet member), 13 non-skin side sheet, 15 linear guide, 15t upper surface, 15b lower surface, 15f convex portion, 15g concave portion, 20 Top sheet (liquid permeable sheet), 20t top surface, 20e outer periphery, 20w wing, 30 Back sheet (liquid impervious sheet), 30b lower surface, 30e outer peripheral edge, 30w wing, 40c body adhesive part, 40w wing adhesive part, 201K crotch, 201He excretion opening ED10 absorber point compression part, ED10t upper surface, ED10b lower surface ED20 main body point-like compressed portion, ED20t upper surface, ED20b lower surface, EL20 linear pressing part (linear concave part), H Folding part, HMA adhesive, a, b, c, d region bED10, c15 points,

Abstract

L'invention concerne un article absorbant (1) comprenant : un corps absorbant (10) qui comprend des fibres d'absorption de liquide; et une feuille perméable aux liquides (20) recouvrant le corps absorbant (10) depuis le côté peau dans la direction d'épaisseur. Le corps absorbant comprend, dans la partie centrale de ce dernier dans la direction de largeur, une section de guidage linéaire (15) qui suit la direction longitudinale et qui sert à guider le pliage du corps absorbant (10) sur le côté peau. Le corps absorbant (10) comprend une pluralité de sections comprimées en forme de point (ED10) sur les deux côtés de la section de guidage linéaire (15) dans la direction de largeur. La section de guidage linéaire (15) comprend une partie en retrait sur au moins un parmi le côté peau et le côté non-peau, et la concentration des fibres d'absorption de liquide est plus grande dans la partie centrale de ladite section de guidage linéaire (15) que dans les bords dans la direction de largeur. Les sections comprimées en forme de point individuelles (ED10) comprennent une partie en retrait sur au moins un parmi le côté peau et le côté non-peau, et la concentration des fibres d'absorption de liquide est plus grande dans la partie centrale desdites sections comprimées en forme de point (ED10) que dans les bords dans la direction de largeur. Une position centrale (c15) dans la direction d'épaisseur de la partie centrale de la section de guidage linéaire (15) est positionnée davantage vers le côté peau qu'une position centrale (bED10) dans la direction d'épaisseur de la partie centrale des sections comprimées en forme de point (ED10).
PCT/JP2016/069460 2015-09-29 2016-06-30 Article absorbant WO2017056611A1 (fr)

Applications Claiming Priority (2)

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JP2015-192079 2015-09-29
JP2015192079A JP6111304B1 (ja) 2015-09-29 2015-09-29 吸収性物品

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WO2017056611A1 true WO2017056611A1 (fr) 2017-04-06

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Cited By (1)

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Publication number Priority date Publication date Assignee Title
WO2019026176A1 (fr) * 2017-08-01 2019-02-07 ユニ・チャーム株式会社 Article absorbant

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2023096922A (ja) * 2021-12-27 2023-07-07 ユニ・チャーム株式会社 軽失禁パッド

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Publication number Priority date Publication date Assignee Title
JPH0333622U (fr) * 1989-08-10 1991-04-03
JP2003033397A (ja) * 2001-07-25 2003-02-04 Daio Paper Corp 吸収性物品
JP2010148708A (ja) * 2008-12-25 2010-07-08 Uni Charm Corp 薄型吸収性物品

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Publication number Priority date Publication date Assignee Title
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
JP5978341B1 (ja) * 2015-03-31 2016-08-24 ユニ・チャーム株式会社 吸収性物品

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0333622U (fr) * 1989-08-10 1991-04-03
JP2003033397A (ja) * 2001-07-25 2003-02-04 Daio Paper Corp 吸収性物品
JP2010148708A (ja) * 2008-12-25 2010-07-08 Uni Charm Corp 薄型吸収性物品

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019026176A1 (fr) * 2017-08-01 2019-02-07 ユニ・チャーム株式会社 Article absorbant
JPWO2019026176A1 (ja) * 2017-08-01 2020-06-25 ユニ・チャーム株式会社 吸収性物品
JP7042086B2 (ja) 2017-08-01 2022-03-25 ユニ・チャーム株式会社 吸収性物品

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