WO2004021947A1 - Article absorbant a sections elastiques de recuperation et procede de production associe - Google Patents

Article absorbant a sections elastiques de recuperation et procede de production associe Download PDF

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Publication number
WO2004021947A1
WO2004021947A1 PCT/JP2003/011408 JP0311408W WO2004021947A1 WO 2004021947 A1 WO2004021947 A1 WO 2004021947A1 JP 0311408 W JP0311408 W JP 0311408W WO 2004021947 A1 WO2004021947 A1 WO 2004021947A1
Authority
WO
WIPO (PCT)
Prior art keywords
crimping
absorbent article
absorbent
portions
crimping portion
Prior art date
Application number
PCT/JP2003/011408
Other languages
English (en)
Japanese (ja)
Inventor
Tatsuya Tamura
Satoshi Mizutani
Shimpei Komatsu
Makoto Suekane
Original Assignee
Uni-Charm Corporation
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 Uni-Charm Corporation filed Critical Uni-Charm Corporation
Priority to AU2003261984A priority Critical patent/AU2003261984A1/en
Publication of WO2004021947A1 publication Critical patent/WO2004021947A1/fr
Priority to US11/059,132 priority patent/US7550646B2/en

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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
    • 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
    • A61F13/47218—Sanitary towels, incontinence pads or napkins specially adapted for female use with a raised crotch region, e.g. hump
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/53—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium
    • A61F13/531—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having a homogeneous composition through the thickness of the pad
    • A61F13/532—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having a homogeneous composition through the thickness of the pad inhomogeneous in the plane of the pad
    • A61F13/533—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having a homogeneous composition through the thickness of the pad inhomogeneous in the plane of the pad having discontinuous areas of compression
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/53—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium
    • A61F13/534—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having an inhomogeneous composition through the thickness of the pad
    • A61F13/535—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 inhomogeneous in the plane of the pad, e.g. core absorbent layers being of different sizes
    • A61F13/536—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 inhomogeneous in the plane of the pad, e.g. core absorbent layers being of different sizes having discontinuous areas of compression
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/53—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium
    • A61F13/539—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium characterised by the connection of the absorbent layers with each other or with the outer layers

Definitions

  • the present invention relates to an absorbent article suitable for absorbing menstrual blood excreted from a female genital organ, and in particular, to elastic restoration for restoring an article to its original state even if it is compressed or deformed when worn.
  • TECHNICAL FIELD The present invention relates to an absorbent article having a part and a method for producing the absorbent article. Background art
  • An absorbent article that absorbs menstrual blood excreted from female genitals is generally composed of an absorbent layer, a liquid-permeable top sheet covering the skin-side surface of the absorbent layer, and a liquid-impermeable covering the clothing-side surface of the absorbent layer. It is configured as having a back sheet of the nature. Usually, the backsheet is worn with the pressure-sensitive adhesive layer adhered to the inner surface of the undercloth cloth.
  • the skin-side surface be in close contact with the excretory part of the wearer.
  • the gap is given to the topsheet.
  • Excretion may flow along the topsheet, making it easier for the absorbent articles to leak from the sides and to the wearer's buttocks, thereby soiling underwear and other clothing.
  • Patent Literatures 1 to 3 an absorbent article was developed in which the portion sandwiched between the concave grooves formed on the skin side surface was raised for close contact with the wearer's excretion part. It has been.
  • Patent Document 1 discloses an absorbent article in which a raised portion having a thickened absorber is provided at a central portion, and a pair of curved front grooves is formed on both left and right sides of the raised portion.
  • the front groove serves as a flexible shaft to easily break the absorber, so that the protruding portion is deformed into an arch shape having a convex cross section toward the wearer.
  • Patent Document 2 discloses an absorbent article provided with a vertically long projecting portion surrounded by a concave portion on a skin contact surface.
  • the protruding portion is raised to make it easy to adhere to the excretory portion of the wearer, and the concave portion surrounding the protruding portion dams the liquid to prevent diffusion to the surroundings.
  • an arc-shaped bent portion is provided on the surface of the region where the absorber is present from the longitudinal edge toward the inside, and the portion surrounded by the bent portion is leakproof.
  • a substantially elongated absorbent article having a wall forming region is disclosed. The leak-proof wall forming region that rises toward the wearer's crotch when worn aims to prevent lateral leakage of excretion.
  • FIG. 15 is a cross-sectional view schematically showing a state in which the absorbent articles described in Patent Documents 1 to 3 and the like are worn.
  • the crotch and thigh of the wearer are denoted by reference numerals 50 and 51
  • the underwear crochet cloth attached to the crotch 50 is denoted by reference numeral 25
  • the conventional absorbent article is denoted by reference numeral 25.
  • the absorbent article 60 is adhered and fixed to the inner surface of the crotch cloth 25.
  • a pair of concave grooves 61, 61 are formed on the skin side surface of the absorbent article 60, and a central portion 62 sandwiched between the concave grooves 61, 61 is a crotch portion 50. Trying to get in close contact with the excretory area.
  • the elastic recovery force against the lateral compressive force mainly depends on the restoring force of the absorbent layer provided in the central portion 62.
  • the absorbent layer provided in the central portion 62 needs to have a soft contact with the crotch portion 50 and a large liquid absorption capacity, and therefore has a large basis weight and low density. Therefore, as shown in Fig. 15, the elastic recovery force in the lateral direction is low when the material is compressed and deformed, and the width cannot be easily recovered from the compressed and deformed state. In addition, when the entire absorbent article falls down due to the movement of the crotch, it cannot be easily recovered from the fall-off state.
  • the absorbent layer having a large basis weight and a low density absorbs excreted liquid such as menstrual blood.
  • the elastic restoring force is reduced by absorbing the pressure, so that when the central portion 62 is crushed by the pressure from the crotch portion 50, the bulk cannot be recovered, and in the lateral direction with respect to the compression by the compression force F.
  • the resilience of the vehicle is greatly reduced. Therefore, even when the distance between the thighs 51 and 51 is increased, the absorbent article contracts in the width direction.
  • the conventional examples described in each of the above patent documents have a structure in which the concave grooves 61 are provided only on the left and right one by one, so that when deformed as shown in FIG.
  • the outer side edges 6 3, 6 3 and the central portion 62 easily come into contact with each other.
  • the excreted liquid given to the central part 62 moves to the side ends 63, 63, and the excreted liquid diffuses in the width direction of the absorbent article 60. That is, the concave grooves 6 1, 61 cannot achieve the effect of excretion liquid diffusion, and the excretion liquid tends to leak laterally.
  • an absorbent article provided with a leak-proof wall extending in the vertical direction at intervals in the lateral direction on the skin side surface of the absorbent article.
  • the leakproof wall is provided with an elastic member that exerts an elastic contraction force in a vertical direction on a liquid-impermeable sheet, and the elastic contraction force allows the sheet to rise from the skin side surface.
  • the rising starting point in the front and rear of the leak-proof wall moves toward the center line in the vertical direction due to the deformation of the product, or moves in the front-rear direction due to the twist of the absorbent article. Therefore, the rising state of the leak-proof wall becomes unstable, and the leak-proof wall is twisted, or the leak-proof wall falls down toward the vertical center line, and the absorption area of the liquid on the skin side surface is increased. May be reduced.
  • the present invention has been made in view of the above-mentioned conventional problems, and has as its object to provide an absorbent article that enhances the elastic recovery force against lateral compression and easily prevents leakage of excreted liquid, and a method for manufacturing the same. I have.
  • Another object of the present invention is to provide an absorbent article that can reliably maintain the leak-proof wall provided on the skin side surface in a standing posture. Disclosure of the invention
  • a liquid-permeable surface sheet located on the skin side surface, a back sheet located on the clothing side surface, and a position between the top sheet and the back sheet are provided.
  • an absorbent article having an absorbing layer wherein
  • At least a first pressure-bonded portion and a second pressure-bonded portion in which the absorbent layer is compressed together with the topsheet extend in the longitudinal direction of the absorbent article, and the first pressure-bonded portion is located with respect to a longitudinal centerline of the absorbent article.
  • the elastic restoring section is provided between the first crimping section and the second crimping section, the absorbent article is compressed in the lateral direction by the restoring force of the elastic restoring section. Almost recovers from the original state to the original state It is possible.
  • the central absorbent between the first crimping parts absorbs the excreted liquid
  • the excreted liquid is dammed by the first crimping part, and the elastic restoring part is hardly wetted. Therefore, even if the central absorbent absorbs the excreted liquid and its elastic restoring force decreases, the elastic restoring portions on both sides can always exhibit sufficient elastic restoring force, and are compressed in the lateral direction or fall down
  • the absorbent article can be recovered from the condition.
  • the absorption layer can be compressed to have a higher density than in the central absorption portion.
  • the elastic restoring portion has a width of preferably not more than half, more preferably not more than ⁇ of the width of the central absorbing portion.
  • the width of the elastic restoring portion When the width of the elastic restoring portion is reduced, a thin and high-density layer can be formed in the elastic restoring portion sandwiched between the first crimping portion and the second crimping portion, and it is easy to exert a large elastic restoring force. . Also, by reducing the elastic restoring force, the elastic restoring force hardly gives the wearer a sense of discomfort.
  • the absorption layer can be compressed by forming the first crimping section and the second crimping section.
  • the absorbent layer is also compressed together with the nonwoven fabric in each of the first crimping portions.
  • the nonwoven fabric is, for example, an air / nonwoven fabric.
  • the elastic restoration force can be further increased.
  • the elastic restoring section contains synthetic fibers
  • the elastic restoring force does not easily decrease even when excreted liquid is applied to the elastic restoring section.
  • the synthetic fibers can be melted and solidified there, so that the first crimping section can maintain the crimped state even when moistened with excrement. .
  • a reinforcing member that exerts an elastic force is used alone, or the surface sheet together with the absorbing layer compressed by forming the first crimping portion and the second crimping portion. And the back sheet.
  • the reinforcing member is a foamed urethane resin, a hydrophilically treated foamed urethane resin, a synthetic rubber, or the like.
  • the elastic restoring portion has a minimum facing distance at the position of the lateral reference line of the absorbent article, and the center extends toward the longitudinally facing end of the absorbent article from the horizontal reference line. It is preferable that the distance from the line is gradually increased.
  • each of the elastic restoration portions has a curved line shape in which a convex side faces the center line.
  • Each of the elastic restoring portions has a portion having a constant width.
  • the present invention is characterized in that the side edges are each defined between each second crimping section and the corresponding longitudinally extending side edge of the absorbent article, the longitudinal edge having an elastic contraction force in the longitudinal direction. Configurable as working.
  • the elastic shrinkage force causes the side end to rise toward the wearer's skin, thereby functioning as a leakproof wall that prevents side leakage.
  • the central absorbing portion contacts the side end portion. Difficult, medium — O It is difficult for excreted liquid to transfer from the central absorption part to the side end, and the leakage prevention effect at the side end can be enhanced.
  • a longitudinally extending sheet is provided on the skin side surface, between which the central absorbent is exposed to the outside, the sheet being a front part and a rear part respectively.
  • the sheet being a front part and a rear part respectively.
  • the second crimping portion At the middle portion, rising from the skin side surface to form a leak-proof wall, and at least one of the front and rear rising starting points of the leak-proof wall is formed by the second crimping portion. It is located nearby.
  • the rising starting point may be located near an end of the second crimping portion.
  • the rising start point of the leak preventing wall is improved. Regular movement can be suppressed, and even when pressure is applied from the thigh in a wet state in which excreted liquid is absorbed, twisting and falling of the leak-proof wall can be suppressed.
  • the first rear crimp portion is provided such that the opposing distance gradually decreases as the first rear crimp portion continuously extends from the first crimp portion toward the rear edge of the absorbent article.
  • a second rear crimp each being provided between each first rear crimp and the corresponding one of the side edges and spaced from the first rear crimp;
  • a sheet extending in the vertical direction is provided on the skin side surface, between which the central absorbent portion is exposed to the outside, and this sheet is fixed to the skin side surface in the front part and the rear part, respectively.
  • An intermediate portion rises from the skin-side surface to form a leak-proof wall, and a rising starting point in front of the leak-proof wall is located near the first press-fitted portion, and is formed behind the leak-proof wall.
  • the rising starting point is located near the second rear crimping portion. 1 y 1
  • the rising start point behind the leak preventing wall may be located near the front end of the second rear crimping portion.
  • the starting point of the rise behind the leak-preventing wall is subjected to the natural restoring action by the rear elastic restoring portion formed between the first rear crimping portion and the second rear crimping portion, Irregular movement can be suppressed to prevent the leakage barrier from twisting or falling.
  • the vicinity means a distance of preferably within 45 mm, more preferably within 25 mm.
  • the absorbent article of the present invention is suitable for use as a sanitary napkin.
  • the absorbent article of the present invention Since the sanitary napkin is worn on the crotch even during daytime activities, the napkin is likely to contract or slip due to the compressive force from the wearer's thigh. However, since the absorbent article of the present invention has the elastic restoring portion, it is easy to recover from the contracted state or the broken state.
  • a liquid-permeable surface sheet located on the skin-side surface, a back sheet located on the garment-side surface, the front sheet and the back surface sheet.
  • the first crimping portion extends in the longitudinal direction of the article, the first crimping portion is arranged symmetrically with respect to the longitudinal centerline of the absorbent article, and the second crimping portion is arranged symmetrically with respect to the longitudinal centerline of the absorbent article. From the outside, where the method comprises:
  • a first convex portion for forming a first crimp portion arranged at a predetermined interval and a second crimp portion located outside of the first convex portion of each of the first crimp portions; Pressurizing at least the absorbent layer from the skin side surface using a pressure member having the second convex portion, wherein
  • the pressing member has a first depth from a vertex of the first protrusion.
  • the absorbent article is not substantially pressurized at the first bottom and the second bottom.
  • the absorbent layer has a lower density at the location where the first bottom and the second bottom face each other than at the location pressed by the recess
  • the first bottom and the second bottom may be used.
  • the absorption layer may be slightly pressurized with the bottom.
  • FIG. 1 is a plan view showing a sanitary napkin according to a first embodiment of the absorbent article of the present invention
  • Fig. 2A is a half-sectional view of the sanitary napkin shown in Fig. 1 cut along the line I la-I la
  • Fig. 2B is a half of the sanitary napkin shown in Fig. 1 cut along the line II b- II b. Sectional view,
  • FIG. 3 is a cross-sectional view showing a state in which the sanitary napkin shown in FIG. 1 is mounted on a cloth cloth for underwear.
  • Fig. 4 shows that the cloth and sanitary napkin were deformed by the compressive force from the side.
  • Fig. 5 is a plan view schematically showing a state in which the crotch cloth and the sanitary napkin have been deformed by a compressive force in the lateral direction.
  • FIG. 6 is a half sectional view showing a sanitary napkin according to a second embodiment of the present invention
  • FIG. 7 is a half sectional view showing a sanitary napkin according to a third embodiment of the present invention
  • FIG. FIG. 8B and FIG. 8C are enlarged plan views showing the shape of the crimping dot, showing a sanitary napkin according to the fourth embodiment.
  • FIG. 9 is a plan view showing a sanitary napkin according to a fifth embodiment of the present invention
  • FIG. 10 is a plan view showing a sanitary napkin according to a sixth embodiment of the present invention
  • FIG. FIG. 12 is a plan view showing a sanitary napkin according to a seventh embodiment
  • FIG. 12 is a plan view showing a sanitary napkin according to an eighth embodiment of the present invention
  • FIG. 13 is a ninth embodiment of the present invention.
  • FIG. 14A and FIG. 14B show a pressing member for forming a crimping portion
  • FIG. 14A is a partial plan view
  • FIG. FIG. 15 is a cross-sectional view taken along line B-B
  • FIG. 15 is a cross-sectional view showing a problem when a conventional sanitary napkin is worn on a crotch part of a wearer.
  • FIG. 1 In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. However, it will be apparent to one skilled in the art that the present invention may be practiced without these specific details. There will be. In other instances, well-known structures have not been shown in detail in order to not unnecessarily obscure the present invention.
  • the absorbent article according to the present invention has a crotch part of a wearer for the purpose of absorbing various exudates excreted from the wearer's body, such as menses, urine, and vaginal discharge.
  • a sanitary napkin whose main purpose is to absorb menstrual blood excreted from the vaginal opening of a woman will be described as an example.
  • the surface of the absorbent article facing the crotch of the wearer is referred to as the “skin-side surface”, and the opposite surface is referred to as the “clothing” regardless of whether or not clothing is worn on the outside. Side surface ".
  • press-bonded portion means a portion where the absorbent layer is compressed at a high density together with at least the topsheet, and which remains in the state of being compressed at the high density.
  • elastic restoring portion refers to a portion of an absorbent article that can exert a greater elastic restoring force (repulsive force) when compressed in the lateral direction than the central absorbent portion located between them. means.
  • longitudinal centerline as used herein means a line that extends in the longitudinal direction and bisects the absorbent article in the lateral direction.
  • lateral reference line does not necessarily mean a line that extends in the horizontal direction and bisects the absorbent article in the vertical direction.
  • the line extending to is defined as the horizontal reference line.
  • FIG. 1 is a plan view showing a sanitary napkin 1 with a skin-side surface facing upward as a first embodiment of the absorbent article of the present invention
  • FIG. 2A is a diagram showing the sanitary napkin of FIG. II Half-section taken along line a
  • Fig. 2B shows half-section taken along line IIb-IIb of the treatment napkin of Fig. 1
  • Fig. 3 shows the sanitary napkin attached to a cloth cloth of underwear
  • FIG. 4 is a sectional view showing a state in which FIG. 5 is a cross-sectional view schematically illustrating a state in which the crochet cloth and the sanitary napkin are deformed by a compressive force in a lateral direction.
  • FIG. 5 is a plan view schematically illustrating the deformed state.
  • the sanitary napkin 1 is vertically long, and the right side edge 1 a and the left side edge 1 b extending in the vertical direction are equidistant in the horizontal direction from the vertical center line O y— O y
  • the leading edge 1 c and the trailing edge 1 d of the outwardly curved line shape are spaced apart from the lateral reference line O x — O x.
  • the wings 18 and 18 are formed on the sanitary napkin as shown in FIG. 1, the right edge 1 a and the left edge 1 b are combined with the wing 18, The description will be made assuming that virtual cut lines A, A extending along the base of 18 are included.
  • this sanitary napkin 1 has a liquid-impermeable back surface sheet 2 appearing on the clothing-side surface and a liquid-permeable surface sheet appearing on the skin-side surface.
  • An absorbing layer 4 is interposed between the back sheet 2 and the top sheet 3.
  • the absorption layer 4 has a larger area than the first absorption layer 4a whose outer periphery is indicated by a dotted line in FIG. 1 and the first absorption layer 4a whose outer periphery is also indicated by a dotted line in FIG.
  • a second absorption layer 4b which is small and superimposed on the first absorption layer 4a, and has a smaller area than the second absorption layer 4b and has a second absorption layer in the hourglass-shaped central absorption section 5; And a third absorbing layer 4c overlaid on layer 4b.
  • the crimping portion 10 is formed by embossing using a pressing member described later, and includes the first absorption layer 4a, the second absorption layer 4b, and the third absorption layer 4c.
  • the pressure-bonding portion 10 is substantially formed of the absorbing layer and the topsheet 3 by a film. Between the high-density crimped section 10a pressed until it is pressed and the adjacent high-density crimped section 10a.
  • a medium-density pressure-bonded portion 10b having a high density In each of the crimping portions 10, the high-density crimping portions 10 a and the medium-density crimping portions 1 Ob are alternately formed, and the skin-side surface of the sanitary napkin 1 is depressed toward the back sheet 2. It has a compressed groove.
  • the crimping portion 10 is provided with first crimping portions 11 and 11 arranged symmetrically with respect to a vertical center line 0 y-0 y and left and right symmetrical with respect to a vertical center line Oy-Oy. There are second crimping portions 12 and 12 spaced apart from the first crimping portions 11 and 11 by a predetermined distance.
  • the first crimping portions 1 1, 11 1 and the second crimping portions 12, 12 are both press grooves along an arcuate curved line whose convex side is directed to the longitudinal center line 0 y—0 y.
  • the crimping portions 11 and 11 and the second crimping portions 12 and 12 are disposed so as to be equidistant from each other over the entire length of the second crimping portions 12 and 12.
  • the crimping portion 10 also has lateral crimping portions 13 connecting the front and rear ends of the first crimping portions 11.
  • the lateral crimping portions 13 and 13 are compressed grooves along an arcuate curved line whose concave side is directed to the lateral reference line 0X-0X.
  • a region surrounded by the first crimping portions 11 and 11 and the lateral crimping portions 13 and 13 is the central absorbing portion 5, and the second crimping portions 12 and 12 are It is located outside this central absorber.
  • the crimping portion 10 further includes front extension crimping portions 14 and 14 that extend forward of the lateral crimping portion 13 continuously from the first crimping portions 11 and 11, similarly to the first crimping portion. It has rearward extending crimping portions 15 and 15 which extend rearward from the lateral crimping portion continuously from 11 and 11.
  • the regions are the elastic restoration portions 6 and 6.
  • the elastic restoring portions 6 are arc-shaped regions having a constant width over the entire length of the second crimping portions 12.
  • an area sandwiched between the right second crimping section 12 and the right edge 1a and an area sandwiched between the left second crimping section 12 and the left edge 1b are It is the end 7,7.
  • the absorbing layer 4 extends in the entire area of the central absorbing section 5 and the elastic restoring sections 6 and 6 and in the range extending from the second crimping sections 12 and 12 to the middle of the side end sections 7 and 7. Is provided.
  • the first absorbent layer 4a, the second absorbent layer 4b, and the third absorbent layer 4c are superimposed, and the central portion becomes large and bulky.
  • An absorption layer 4 A is provided.
  • the elastic restoration layer 4B provided in the elastic restoration section 6 is an absorption layer having a relatively large basis weight in which the first absorption layer 4a and the second absorption layer 4b are laminated. Further, in the elasticity restoration layer 4B, the absorption layer is compressed to increase the density.
  • Each side end 7 is provided with a side end absorption layer 4C composed of the first absorption layer 4a.
  • the basis weight of the elastic restoration layer 4B may be the same as the basis weight of the central absorbent layer 4A, or may be slightly smaller. However, in order to exhibit a sufficient elastic restoring force in the elastic restoring sections 6, 6, it is preferable that the basis weight of the elastic restoring layer 4B is larger than the basis weight of the side end absorbing layer 4C.
  • the surface sheet 3 and the absorbent layer are pressed by the embossed convex portion. At this time, the surface sheet 3 and the absorbent layer are pressed and heated to form a compressed groove, while the surface sheet 3 which has received the pressing force of the convex portion is the first sheet slightly laterally separated. It is stretched laterally between the crimping part 11 and the second crimping part 12.
  • the absorbent layer between the first crimping portion 11 and the second crimping portion is capable of elastically restoring the stretched topsheet 3. It is held down by force.
  • the elastic restoration layer 4B in the elastic restoration portion 6 is made to have a higher density than the central absorbent layer 4A and the side end absorbent layers 4C. it can.
  • an absorbent layer having a high density by being compressed in advance is supplied to a portion corresponding to the elasticity restoring portion 6.
  • the absorbent layer may be further compressed by forming the crimping portions 11 and 12 to form the high-density elastic restoration layer 4B.
  • the first crimping portions 11, 11 and the second crimping portions 12, 12 are compressed grooves that are concave toward the back sheet 2. Therefore, the central absorbent section 5 and the elastic restoration sections 6 and 6 are raised toward the wearer's skin. As will be described later, if the sex restoration parts 6, 6 are raised toward the wearer's skin, the central absorption part 5 and the side end parts 7, 7 in the deformed state shown in FIG. It becomes easier to separate.
  • the first crimping part 11 and the second crimping part 12 (in both the high-density crimping part 10 a and the medium-density crimping part 10 b) have a central absorbent layer 4 A
  • the density is higher than that of the side end absorption layer 4C and the elastic restoration layer 4B.
  • the first crimping portion 11 and the second crimping portion 12 function as flexible shafts that facilitate folding the sanitary napkin at that portion.
  • the horizontal crimping parts 13 and 13, the front extension crimping parts 14 and 14, and the rear extension crimping parts 15 and 15 also function as flexible shafts.
  • liquid-impervious sheets 20 and 20 are provided on both sides of the skin-side surface, and left and right liquid-impervious sheets 20 and 20 are provided.
  • left and right leak-proof walls 21 and 21 are formed respectively.
  • the shape of the left and right liquid-impervious sheets 20 and 20 and the structure of the leak-proof walls 21 and 21 are symmetrical with respect to the longitudinal center line 0 y—0 y. Only the liquid-impervious sheet 20 and leak-proof wall 21 located on the left The description of ooff is omitted, and reference numerals for indicating the structure of the left leakage prevention wall are omitted in each drawing.
  • the liquid-impervious sheet 20 is folded in two and sandwiched in a state where an elastic member 22 made of rubber or the like extending in the longitudinal direction is stretched therebetween. Opposite surfaces of the sheets folded together with 22 are adhered to each other.
  • the folded, impervious sheet 20 is composed of a first face 21a and a second face 21c resulting from a further fold at the longitudinally extending fold line 2lb. have.
  • the first surface 21a is adhered to the skin-side surface of the sanitary napkin 1 in a region indicated by a dotted line in FIG.
  • the boundary between the bonded portion and the non-bonded portion of the first surface 21a has an intermediate boundary 22a, a front boundary 22b, and a rear boundary 22c.
  • the first surface 21a and the skin-side surface are adhered to each other in the area surrounded by these boundary lines 22a, 22b, and 22c (the area where the dotted line is not hatched). Absent.
  • the second surface 2lc is superimposed on the first surface 2la. And glued. Also in the region between the rear end 24 b and the rear edge 1 d of the rear boundary line 2 2 c, the second surface 21 c is overlapped and adhered to the first surface 21 a. . Note that, in the remaining area between the front end 24a and the rear end 24b, the second surface 21c is not bonded to the first surface 21a.
  • the elastic member 22 is provided so as to extend at least over a range between the front end 24a and the rear end 24b, and in the free state where no external force is applied to the sanitary napkin 1,
  • the elastic contraction force acts on the second surface 21 c of the liquid-permeable sheet 20, and the front end 24 a and the rear end 24 b try to approach each other. Therefore, between the front end 24 a and the rear end 24 b, the first surface 21 a and the second surface 21 c rise from the intermediate boundary line 22 a.
  • a leak-proof wall 21 having a length of L 1 is formed.
  • the front end 24 a of the front boundary line 2 2 b is used as a rising starting point in front of the leak-proof wall 21, and the rear end 24 b of the rear boundary line 2 2 c is behind the leak-proof wall 21. Is the starting point of the rise.
  • the rising starting point 24a in front of the leakage preventing wall 21 is located near the front end 12a of the second crimping portion 12, that is, near the front end of the elastic restoration portion 6. I have.
  • the shortest linear distance between the front starting point 24a and the front end 12a of the second crimping portion 12 is 45 mm or less, preferably 40 mm or less.
  • the rising starting point 24 b behind the leakage preventing wall 21 is located near the rear end 12 b of the second crimping portion 12, that is, near the rear end of the elastic restoration portion 6.
  • the shortest linear distance between the rear starting point 24 b and the rear end 12 b of the second crimping portion 12 is 45 mm or less, preferably 30 mm or less. Further, it is preferable that the linear distance between the rear rising start point 24b and the rear end 12b is shorter than the linear distance between the front rising start point 24a and the front end 12a. This is because, when the sanitary napkin 1 is worn, the rear starting point 24 b near the buttocks of the wearer is more easily movable. Therefore, by moving the rear starting point 24 b close to the elastic restoring portion 6, the movement of the starting point 24 b is easily suppressed.
  • the sanitary napkin 1 is formed with wings 18, 18 projecting outward from the right edge 1 a and the left edge 1 b.
  • the wings 18 and 18 are formed by bonding the back sheet 2 and the liquid-impermeable sheet 20 to each other.
  • a pressure-sensitive adhesive layer (not shown) for bonding a central portion of the sanitary napkin 1 to a crotch cloth of underwear;
  • a pressure-sensitive adhesive layer (not shown) is provided for adhering 18 and 18 to the outer surface of the cloth cloth of the underwear.
  • FIG. 3 shows a state in which the sanitary napkin 1 is attached to an underwear crotch cloth 25.
  • the sanitary napkin 1 has a central portion bonded to the inner surface of the crotch cloth 25 via a pressure-sensitive adhesive provided on the outer surface of the back sheet 2.
  • the wings 18, 18 are bent toward the outer surface of the crotch cloth 25 so as to wrap around both side edges of the crotch cloth 25, and the wing parts 18, 18 are made of a pressure-sensitive adhesive. Glued to the outer surface of the crotch cloth 25.
  • the sanitary napkin 1 When the sanitary napkin 1 is put on the wearer's crotch while wearing this underwear, the sanitary napkin 1 tends to deform along the surface of the wearer's crotch. At this time, since the first crimping portions 11 1 and 11 and the second crimping portions 12 and 12 function as flexible axes, the sanitary napkin 1 has a skin-side surface when viewed in the cross section of FIG. Are easily deformed so as to be depressed. Also, in the vertical direction, the sanitary napkin is depressed and deformed so that the leading edge 1c and the trailing edge 1d approach each other, so that the elastic member 22 prevents the contraction force in the vertical direction from being applied. The leak walls 21 and 21 rise from the skin side surface and come into contact with the wearer's crotch as shown in FIG.
  • the side ends 7, 7 allow the second crimping portions 12, 12.
  • the flexible shaft tends to bend inward and upward. Therefore, as shown in FIG. 4, the side edges 7, 7 rise slightly diagonally so that the right edge 1a and the left edge 1b face the wearer's body. , 7 and the leak-proof walls 21, 21 rising from the side edges 7, 7 make it easier to prevent lateral leakage of menstrual blood.
  • the side ends 7, 7 are connected to the second crimping portions 12 and 12, respectively.
  • the side end parts 7, 7 having the side end absorbent layers 4C, 4C are used to support the leak-proof walls 21 1, 21 from below.
  • the leak-proof walls 21 and 21 can be securely adhered to the wearer's crotch.
  • the side ends 7, 7 are located below the leak-proof walls 21, 21 and in the middle of the thickness of the deformed sanitary napkin 1, and are convex inside the side ends 7, 7.
  • the leak-proof walls 21 and 21 may not contact the elastic restoration portions 6 and 6 even if they contact the side ends 7 and 7. Therefore, even if menstrual blood may adhere to the leak-proof walls 21 and 21 along the wearer's crotch, the menstrual blood can be prevented from touching the elastic restoration portions 6 and 6. As a result, the elastic restoring portions 6 and 6 are less likely to be in a wet state, and a decrease in elastic function can be suppressed.
  • the portion of the lateral crimping portions 13 and 13 is bent as a flexible shaft, and the front end portion in front of the lateral crimping portion 13 hits the pubic mound and is behind the lateral crimping portion 13. The rear end of the is now hitting the buttocks.
  • the front end is deformed so that the front extension crimping portions 14 and 14 can be fitted to the pubic ridge using the flexible shaft, and the rear end can be fitted to the buttocks using the rear extension crimping portions 15 and 15 as the flexible axis. Deform.
  • front extension crimping portions 14 and 14 and the rear extension crimping which extend in a pair in the front-rear direction, respectively, at a front end portion forward of the horizontal crimping portion 13 and a rear end portion of the horizontal crimping portion 13. Since the parts 15 and 15 are present, it is possible to increase the rigidity of the sanitary napkin 1 at the front end and the rear end because the rigidity against the torsion at the front end and the rear end can be increased. Become.
  • Compressive force F acts. This compressive force F acts to reduce the width of the sanitary napkin 1, and furthermore, the elastic restoring parts 6, 6 Acts on the vertical center line O y — O y.
  • the compressed portion F acts strongly as a force for reducing the width, particularly at the position of the lateral reference line O x -O x.
  • the elastic restoring portions 6, 6 sandwiched between the first crimping portion 11 and the second crimping portion 12 have a curved line shape, and as shown in FIG. 5, the elastic restoring portions 6, 6 Are positioned so as to follow the inner curved surfaces of the thighs 51, 51, and the distance from the inner surface of the thighs 51, 51 is almost uniform over the entire length of the elastic restoration portions 6, 6. is there. Therefore, the compressive force F acts uniformly without a large force difference over the entire length of the elastic restoring portions 6.
  • the compressive force F is uniformly applied to the portions of the elastic restoration portions 6 having rigidity, the compressive force does not concentrate only on the portion of the lateral reference line O x— O x. It disperses in the length direction and acts on the central absorbing part 5 between the elastic restoring parts 6, 6. Therefore, the width direction of the central absorbing portion 5 is uniformly narrowed, and only a part thereof is not extremely shrunk.
  • the elastic restoring portions 6 and 6 having high density and high rigidity approach each other, the central absorbing portion 5 located therebetween is pushed up toward the wearer's body and pressed against the crotch portion 50. In this way, the central absorbent 5 comes into close contact with the vaginal opening. In this state, the elastic restoring portions 6 and 6 function to support the central absorbing portion 5 from below, so that the close contact between the central absorbing portion 5 and the vaginal opening is maintained.
  • the elastic restoring layers 4B, 4B of the elastic restoring portions 6, 6 are formed by compressing the absorption layer to increase the density, and have high elastic restoring properties in the lateral direction. Therefore, when the interval between the thighs 51, 51 is widened, the central absorbing portion 5 is easily restored in the width direction by the elastic restoring action of the elastic restoring portions 6, 6. Also, when the sanitary napkin 1 is twisted when worn, the elastic restoration portion The sanitary napkin is easily restored by the elastic restoration action of 6, 6.
  • the elastic restoring portions 6 and 6 have a uniform width and are curved so as to follow the thighs 51 and 51, the elastic restoring portions 6 and 6 have elasticity when the thighs 51 and 51 are expanded. The compressive force F acting on the restoring parts 6, 6 is reduced almost simultaneously and equally at each position of the elastic restoring parts 6, 6, and the width of each part of the central absorbing part 5 is reduced. You will be able to recover evenly.
  • the difference in the distance between each of the elastic restoring sections 6 and 6 and the thighs 51 and 51 is reduced so that the compressive force F is applied to the elastic restoring sections 6 and 6.
  • the first crimping portion 11 and the second crimping portion 1 Preferably, the elastic restoring portion 2 and the elastic restoring portion 6 are curved as shown.
  • the first crimping portion 11, the second crimping portion 12, and the elastic restoring portion 6 are closest to each other at the position of the horizontal center line O x— O x, and this horizontal center line It can be used as long as it moves away from the center line Oy—Oy in the vertical direction as it moves back and forth from 0X-0X.
  • the two crimping portions 11 and 12 and the elastic restoring portions 6 and 6 may extend in a circular or elliptical arc, trapezoid, or V-shape.
  • the crimping portion 11 and the second crimping portion 12 may extend in a zigzag line or a wavy line.
  • Menstrual blood excreted from the vaginal orifice is mainly given to the central absorbent section 5 which is in close contact with the vaginal orifice, passes through the topsheet 3 and is absorbed by the central absorbent layer 4A. Since the central absorbing portion 5 is surrounded by the first crimping portions 11 and 11 and the lateral crimping portions 13 and 13, it prevents menstrual blood from spreading outward in the crimping portion. Menstrual blood is diffused and absorbed in the central absorption part 5, and the central part is absorbed. The liquid absorption capacity of the reservoir 4 A can be fully utilized.
  • the elastic restoring force against compression decreases.
  • the elastic restoring layers 4B, 4B in the elastic restoring sections 6, 6 are compressed at a high density, so that the elastic restoring force can be maintained even if menstrual blood enters the inside. Therefore, even in the moist state given menstrual blood, the width of the central absorbing part 5 can be restored each time the thighs 51, 51 spread.
  • the central absorbent portion 5 is pressed against the vaginal opening by the elastic restoration portions 6 and 6, even if menstrual blood is given to the central absorbent layer 4A and the compressive recovery property is reduced, there is a gap between the vaginal opening and the vaginal opening. It is difficult for gaps to be formed.
  • the sanitary napkin 1 is compressed in the lateral direction, and there are convex elastic restoring parts 6, 6 on both sides of the central absorbent part 5, and the side end parts on the outside thereof. 7, 7 are located. Therefore, it is difficult for the surface of the central absorbing portion 5 to directly contact the surfaces of the side end portions 7 and 7. As a result, menstrual blood absorbed by the central absorption part 5 is less likely to be transferred to the side edges 7, 7 and undesired diffusion of menstrual blood can be prevented. Also, even when menstrual blood flows along the surface of the central absorption part 5 in the lateral direction, the elastic restoration parts 6, 6 can receive and clog it and prevent the menstrual blood from flowing in the side end parts 7, 7. Cheap.
  • the deformed sanitary napkin 1 since the elastic restoring portions 6 are formed on both the left and right sides, the deformed sanitary napkin 1 immediately returns to its original state, especially near the portion where the elastic restoring portions 6 are provided. I can recover. Even after the absorption of menstrual blood, the deformed sanitary napkin 1 can be restored to its original state.
  • the rising start point 24a in front of the leakage preventing wall 21 and the rising start point 24b in the rear are located in the vicinity of the elastic restoration portion 6, and the straight line distance is 45 mm or less. Therefore, even if the sanitary napkin 1 is deformed while being worn and the starting point 24 a, 24 3 ⁇ 4> approaches the longitudinal center line 0 — 0, the external force Is removed, it is easy to return to the original position.
  • the leakage preventing walls 21 and 21 are not unintentionally twisted, and the positions of the rising starting points 24a and 24b are stabilized, so that the leakage preventing walls 21 and 21 can be centrally absorbed. It can be prevented from falling down so as to cover the surface of part 5. As a result, the leakage preventing walls 21 and 21 can enhance the effect of preventing menstrual blood leakage.
  • the first crimping portion 11, the second crimping portion 12, and the elastic restoration portion 6 have a convex curved shape toward the longitudinal center line 0 y—0 y, the second crimping portion 12
  • the front end 1 2a and the rear end 1 2b are easy to approach the rising starting points 24a, 24b, and thus the rising starting points 24a, 24b by the elastic restoration portion 6. Is easy to stabilize.
  • the front rising start point 24 a is located ahead of the front end 12 a of the second crimping portion 12, but the rising start point 24 a is It may be located between the second crimping portion 12 and the right edge 1a, or the rear rising starting point 24b is located between the second crimping portion 12 and the right edge 1a. May be.
  • the shortest linear distance between the rising starting point 24a or 24b and the second crimping portion 12 is preferably 45 mm or less, and more preferably 25 mm or less.
  • preferable numerical values of each component will be described. In other embodiments described hereinafter, it is preferable that parts having the same configuration as in the first embodiment have the same numerical values.
  • the absorbent layer is formed by wrapping fibers such as pulp with hydrophilic paper, etc., but the density and basis weight of the absorbent layer below excludes hydrophilic paper.
  • the central absorbent layer 4A preferably has a large liquid absorption capacity so that the central absorbent 5 can sufficiently absorb blood. Further, it is preferable that the elastic member has a soft contact and an elastic restoring force capable of recovering the thickness when the pressure applied from the wearer's body is removed.
  • the density of the central absorbent layer 4A is preferably in the range of 0.05 to 0.15 g / cm 3 .
  • the basis weight of the central absorbent layer 4A is preferably from 500 to 1200 gZm 2 , and more preferably from 500 to: L 000 g / m 2 . Within this range, sufficient liquid absorption capacity and elastic restoring force against vertical compression can be realized.
  • the width dimension W1 of the central absorption section 5 on the horizontal reference line 0X-0X is preferably in the range of 15 to 5 Omm, and more preferably in the range of 20 to 4 Omm.
  • the first reason is that the width of the crotch of general women is about 3 Omm.
  • the second reason is that if the width dimension W1 is within the above range, even if the side ends 7, 7 and the leakage preventing walls 21, 21 fall down toward the longitudinal center line Oy—Oy, This is because the surface of the central absorption section 5 can be continuously exposed to some extent in order to receive blood.
  • the elastic restoration layer 4B provided in the elastic restoration section 6 has a higher density than the central absorption layer 4A and the side end absorption layer 4C, but the thickness of the elastic restoration section 6 is not so small. Absent. That is, the elastic restoration portion 6 has a basis weight of 300 to 800 at a position between the first crimping portion 11 and the second crimping portion 12 each having a width dimension W4 of 1.5 to 3.5 mm. g / m 2 , preferably 350 to 600 g / m 2 , formed by compressing and packing the absorbent layer to increase the density of the absorbent layer to 0.1 to 0.25 g / cm 3 .
  • the elastic restoration portion 6 is formed in a convex shape so that the width dimension W2 is 3 to 10 mm and the thickness from the outer surface of the back sheet 2 to the outer surface of the top sheet 3 is 2 to 6 mm.
  • the elastic restoring portions 6 and 6 provided between the central absorbing portion 5 and the side ends 7 and 7 have a strong waist and are rich in elastic restoring force. Furthermore, its bulk and elastic restoring force can be made not to decrease even when wet.
  • the central absorbent section 5 and the elastic restoration sections 6 and 6 are combined with the hydrophilic fiber absorbent layer between the top sheet 3 and the back sheet 2.
  • auxiliary layer such as a nonwoven fabric made of synthetic fibers can be interposed.
  • the preferred range of the density is the density of the absorbent layer excluding the nonwoven fabric, and the preferred basis weight means the density including the absorbent layer and the nonwoven fabric.
  • the length of the elastic restoration portions 6 and 6 (dimension measured in parallel with the longitudinal center line Oy—Oy) is determined by the length of the second crimping portions 12 and 12. If the length of the elastic restoring portions 6 is too short, the width of the central absorbent portion 5 cannot be recovered sufficiently. If the length is too long, the rigidity of the entire sanitary napkin becomes too high. Gives a strange feeling to the crotch of the elderly.
  • the length of the elastic restoration portions 6, 6 is preferably 40 mm or more and 100 mm or less. However, in the case of a long-type sanitary napkin, such as that shown in FIG. 10, used on days with a large amount of blood for night use, the length of the viability restoration sections 6, 6 may exceed 100 mm.
  • the sanitary napkin 1 when the sanitary napkin is the long type having a length of about 380 mm, the upper limit of the length of the elastic restoration portions 6 is about 120 mm. If the length exceeds 100 mm (if it is longer than 120 mm in the case of the long type), the sanitary napkin 1 may give a rigid feeling to the wearer's body.
  • the basis weight of the side end absorbent layer 4C is smaller than that of the elastic restoration layer 4B, for example, preferably about 300 to 450 g / m 2 .
  • the width W3 of the side end absorbent layer 4C is preferably 10 to 35 mm, more preferably 10 to 20 mm.
  • the upper limit of the basis weight is not limited to the above range, and may be 600 g / m 2 in the case of a sanitary napkin.
  • the highest density portion that is, the density in the high-density crimping portion 10a has a central absorbent layer 4A, Elastic restoration shoulder 4B and side end absorption layer 4C It is preferable that the pressure is sufficiently high.
  • the density of the high-density crimping section 10a needs to be 0.3 g / cm 3 or more. 5 to: preferably in the range of 0.5 g / cm 3 .
  • the elastic restoring sections 6 and 6 having a sufficient elastic restoring function can be configured.
  • the medium-density crimping portions 10 b Is preferably within the above range.
  • a synthetic resin film formed with a large number of liquid permeable holes, a synthetic resin sheet formed in a net shape, and a one-through nonwoven fabric formed of chemical fibers are used.
  • a composite material in which the synthetic resin film having liquid permeation holes on the skin side surface appears and an air-through nonwoven fabric is laminated thereunder can be used.
  • the synthetic resin film is formed of a polyethylene resin containing titanium oxide as a whitening agent.
  • the air-through nonwoven fabric has a core made of polyethylene terephthalate (PET) containing titanium oxide and a sheath made of polyethylene.
  • PET polyethylene terephthalate
  • the core-in-sheath type composite synthetic fiber of (PE) is used, and the core-in-sheath type composite synthetic fiber is bonded to each other by hot fusion.
  • the topsheet 3 may be another nonwoven fabric such as a spunlace nonwoven fabric or a spunbond nonwoven fabric.
  • the back sheet 2 is a liquid-impermeable and air-permeable sheet, such as a polyethylene (PE) film or a polypropylene (PP) film in which fine air holes are formed.
  • PE polyethylene
  • PP polypropylene
  • 3 CAC0 the plastic off Ilm, B a S 0 stretching by mixing inorganic filler one such 4 By doing so, fine air holes are appropriately dispersed and formed in the film, and the air permeability is improved.
  • the film has a thickness of about 15 to 5 Oim.
  • a material obtained by laminating a thermoplastic resin on a nonwoven fabric may be used.
  • the first absorption layer 4a, the second absorption layer 4b, and the third absorption layer 4c are formed by depositing fluff pulp such as pulverized pulp, mercerized pulp, and cross-linked pulp. You. The whole of the absorbent layers 4a, 4b, 4c is wrapped in hydrophilic paper in a state of being superposed.
  • the pulp may be mixed with a synthetic water-absorbing polymer such as polyacrylate, polyacrylamide, or maleic anhydride, or a natural absorbent polymer such as starch or cellulose. Alternatively, a sheet-like water-absorbing polymer may be included.
  • the elastic restoring sections 6 and 6 contain the water-absorbing polymer or the sheet thereof, the bonding force between the pulp is increased in a wet state in which menstrual blood has been absorbed, and the elastic restoring sections 6 and 6 6 can increase the rigidity.
  • the liquid impermeable sheet 20 forming the leak-proof wall 21 a spunbond nonwoven fabric, a meltblown nonwoven fabric, or a laminate thereof is used.
  • the sheet 20 is preferably water-repellent.
  • the back sheet 2, the top sheet 3, the absorbing layer 4 and the liquid impermeable sheet 20 are bonded to each other via a suitable adhesive at portions other than the crimping portion 10.
  • FIG. 6 is a half sectional view showing a sanitary napkin 1A according to a second embodiment of the present invention.
  • a nonwoven fabric 8 made of synthetic fibers is formed on the absorbent layers 4A and 4B from the central absorbent section 5 to the inside of the elastic restoring section beyond the first crimping sections 11 and 11.
  • This non-woven fabric is, for example, an air-sl-non-woven fabric.
  • the air-through nonwoven fabric is made of an eccentric core-sheath composite synthetic fiber (for example, having a fineness of 4.4 dtex and a fiber length of 50 mm) having a core of polypropylene (PP) and a sheath of polyethylene (PE).
  • the fibers are formed by heat treatment with hot air at 135 ° C. for 1 minute, and the fibers to which a hydrophilic oil agent is applied are used.
  • the density of the air-through nonwoven fabric is lower than that of the central absorbent layer 4A and the surface sheet 3, and is in the range of 0.05 g / cm 3 or more and 0.3 g / cm 3 .
  • the thickness of the air-through nonwoven fabric is 0.5 mn! 22 mm, which is used by folding it into two or three layers.
  • a central absorbent layer 4A formed of hydrophilic fibers such as pulp or a mixture of hydrophilic fibers and a water-absorbing polymer and wrapped with hydrophilic paper, and a surface sheet 3 Since the air-through nonwoven fabric is provided, the blood given to the surface sheet 3 in the central absorbing portion 5 penetrates the surface sheet 3, and further, by its own weight, flows through the space between the fibers of the air-through nonwoven fabric. It passes through and is absorbed by the central absorbent layer 4A. Therefore, the rate of absorbing menstrual blood given repeatedly can be increased, and the topsheet 3 can be easily kept dry.
  • the air-through nonwoven fabric has a high elastic restoring property, when the central absorbing portion 5 is compressed in the horizontal direction and the width is reduced as shown in FIGS. 4 and 5, the central absorbing portion 5 itself is in the horizontal direction. It will be able to exhibit some elastic restoring power.
  • the elastic restoration sections 6 and 6 a pulp layer or a layer composed of pulp and a water-absorbing polymer is formed together with the elastic restoration layer 4B wrapped with hydrophilic paper.
  • the through nonwoven fabric is sandwiched between the back sheet 2 and the front sheet 3 in a compressed state. Therefore, the elastic restoration function of the elastic restoration portions 6 and 6 can be further enhanced.
  • the air-through nonwoven fabric is heated and pressurized together with the absorbent layer, and the synthetic fibers constituting the air-through nonwoven fabric are melted. Therefore, the first crimping portion 11 can be kept in a compressed state, and problems such as recovery of the first crimping portion 11 from the crimped state even when menstrual blood is touched can be eliminated. Therefore, the inside of the elastic restoration portion 6 can always be kept at a high density.
  • the air-through nonwoven fabric is also present in the second crimping portion 12.
  • the non-woven fabric formed of synthetic fibers is not limited to an air-through non-woven fabric.For example, a spun-bond non-woven fabric, a melt-spun non-woven fabric, etc. Other nonwoven fabrics may be provided.
  • FIG. 7 is a half sectional view showing a sanitary napkin 1B according to a third embodiment of the present invention.
  • a reinforcing member 23 is provided in the elastic restoring portions 6, 6 together with the elastic restoring layers 4B, 4B.
  • This reinforcing member 23 has a higher density and a higher rigidity than the central absorbent layer 4A and the side end absorbent layer 4C.
  • the reinforcing member 23 is made of synthetic resin such as foam resin such as foam resin and pulp.
  • An air-laid nonwoven fabric obtained by heat-sealing fibers or fixing with a binder is used, and a stick-shaped or flat-plated natural rubber or a synthetic rubber is also used.
  • the urethane foam resin for the reinforcing members 23 is subjected to hydrophilic treatment
  • the housing 5, the first crimping portion 11, the second crimping portion 12, and the elastic restoring portions 6, 6 may be arranged so as to extend continuously.
  • only the reinforcing member 23 may be left between the back sheet 2 and the top sheet 3 without providing an absorbent layer such as pulp in the elastic restoring sections 6.
  • FIG. 8A is a plan view of a sanitary napkin 1C according to a fourth embodiment of the present invention.
  • the crimping portion 10B is formed in the same pattern as the crimping portion 10 shown in FIG.
  • This crimping portion 10B includes a first crimping portion 11B, 11B, a second crimping portion 12B, 12B, a lateral crimping portion 13B, 13B, a forward extension crimping portion 14B, 14B. And a rear extension crimping portion 15B, 15B.
  • the crimping portion 10B is not formed as a continuous pressing groove, but as a crimping dot arranged at intervals along the pattern.
  • the press-bonded portion 10B is formed such that the topsheet 3 and the absorbent layer 4 are pressurized and heated only at the portion of the dot and have a high density. Further, when these pressure-bonded dots are formed using the embossed protrusions of the dot pattern, neither heating nor pressure is applied between the adjacent pressure-bonded dots.
  • the elastic restoration layer 4B included in the elastic restoration portions 6B, 6B a material obtained by compression-molding pulp or the like in advance. Also, as shown in Fig. 7, the reinforcing members 23 It is preferable to use
  • the crimping dot may be circular, or as shown in FIG. 8C, the crimping dot may have a vertically elongated short line shape.
  • the pressurized and unheated intermediate portion between the adjacent crimping dots in the first crimping portion 11B and the adjacent crimping dot in the second crimping portion 12B As shown in FIGS. 8B and 8C, the pressurized and unheated intermediate portion between the adjacent crimping dots in the first crimping portion 11B and the adjacent crimping dot in the second crimping portion 12B.
  • the first crimping parts 1 IB, 11 B crimping dots and the second middle part do not overlap in the horizontal direction (X direction) with the intermediate part that is not pressurized and heated between them. It is preferable that the crimping nozzles of the parts 12B and 12B are formed alternately.
  • the crimping dots By arranging the crimping dots alternately, when menstrual blood given to the central absorbing part 5 spreads laterally along the surface sheet 3 and the absorbing layer, the crimping dots are moved laterally. It acts like a maze for the transfer of menstrual blood, and has the effect of preventing menstrual blood from migrating to the side ends 7,7.
  • one of the first crimping portion and the second crimping portion is formed as a compressed groove like the crimping portion 10 in FIG. 1, and the other is a crimping dot as shown in FIGS. 8A, 8B, and 8C. May be formed.
  • all of the first crimping portion, the lateral crimping portion, the front extension crimping portion and the rear extension crimping portion may be formed as compressed grooves, and only the second crimping portion may be formed as the row of crimping dots.
  • the second crimping portion is formed as a compression groove, and the entire first crimping portion or only the region of the first joining portion facing the second crimping portion is formed as a row of the crimping dots. Is also good.
  • the horizontal crimping portion, the front extension crimping portion, and the rear extension crimping portion may be formed as compressed grooves or may be formed as a row of crimping dots.
  • the first crimping portion close to the vertical center line ⁇ y—0 y be a compression groove and the second crimping portion be a row of crimping dots. In this way, it is possible to prevent menstrual blood given to the central absorption section 5 from being transferred to the elastic restoration sections 6 and 6. 0
  • the crimping portion when the crimping portion is formed as a row of crimping dots, the non-crimping portion between the adjacent crimping dots tends to bend in the vertical direction, and the front end of the sanitary napkin is located on the lower abdomen side. In addition, the rear end is easily bent and deformed so as to fit the buttocks side. Further, when the crimping dots are formed alternately as shown in FIGS. 8B and 8C, the crimping portion can enhance the effect of the bending without increasing the bending rigidity.
  • the length of the short-line crimping dot is preferably about 10 to 20 mm, and the short-line crimping dot adjacent in the vertical direction is preferred.
  • the length of the intermediate portion (non-pressed portion) between them is preferably about 5 to 1 Omm.
  • the short wire-shaped crimping dough may be formed such that the high-density crimping portion 10a and the medium-density crimping portion 10b are alternately repeated. Any part of the crimping part shown in FIG. 1 may be interrupted.
  • FIG. 9 to FIG. 13 show still another embodiment.
  • the crimping portions of the first to fourth embodiments are formed in the same or similar patterns, the crimping portions of the embodiments shown in FIGS. 9 to 13 are different from the first to fourth crimping portions. It is formed in a different pattern from the embodiment ⁇
  • FIGS. 9 to 13 can, of course, select and adopt the respective structures shown in the first to fourth embodiments. Therefore, only the difference in the pattern of the crimping portion will be described below, and the other portions will be denoted by the same reference numerals as those in the above embodiments, and detailed description thereof will be omitted.
  • FIG. 9 is a plan view of a sanitary napkin 1E showing a fifth embodiment of the present invention.
  • the crimping portion 10E of the sanitary napkin 1E shown in FIG. 9 does not have the lateral crimping portions 13, 13 as shown in FIG. 1, and the first crimping portion 11E, 11 has a circular arc shape.
  • the front extension crimping sections 14E, 14E and the rear extension crimping sections 15E, 15E are continuous before and after E.
  • the portion surrounded by the first crimping portions 1 IE and 11 E is the central absorbing portion 5.
  • the second crimping portions 12E, 12E are provided outside the central absorbing portion 5.
  • the second crimping portions 12E, 12E are also formed in a circular arc shape, and maintain the same distance from the first crimping portions 11E, 11E.
  • the elastic restoring portions 6 and 6 can exhibit a sufficient elastic restoring function.
  • menstrual blood given to the absorbent layer flows from the central absorbent portion 5 sandwiched between the first crimping portions 11E, 11E, and further from the portion sandwiched between the forward extension crimping portions 14E, 14E and the rear portion. Since it can spread to the portion sandwiched between the extended pressure-bonded portions 15E and 15E, the length of the sanitary napkin 1E in the vertical direction can be effectively used when much menstrual blood is given.
  • FIG. 10 is a plan view showing a sanitary napkin 1F according to a sixth embodiment of the present invention.
  • the sanitary napkin 1F is vertically long, and the width between the right side edge 1a and the left side edge 1b is greatly widened at the rear portion, so that a so-called hip guard portion is formed.
  • the opposing interval is formed so as to be gradually narrowed, and is connected by a curved connection crimping portion 17F inside the rear edge 1d.
  • second rear crimping portions 18F and 18F are provided outside the first rear crimping portions 15F and 15F, and a curved shape is formed inside the rear edge 1d. -J o — are connected by a connecting crimp 19 F.
  • the second public information crimping portions 18F and 18F also have portions where the facing distance gradually narrows toward the trailing edge 1d.
  • the area surrounded by the first crimping portion 11F, the first crimping portion 11F, and the lateral crimping portion 13F is the central absorbing portion 5F
  • a region surrounded by the rear crimp portion 15F, the first central rear crimp portion 15F, and the connecting crimp portion 17F is a rear central absorbing portion 5G.
  • a bulky central absorbent layer 4A is continuously provided between the front sheet 3 and the back sheet 2.
  • the density and the basis weight of the central absorbent layer 4A are substantially uniform.
  • the absorption layer (elastic restoration layer) provided between the top sheet 3 and the back sheet 2 is higher in density than the central absorbent layer 4A in the rear central absorbent section 5G.
  • the density of the absorbent layer in the rear elastic restoration sections 6F, 6F is the same as that of the elastic restoration sections 6, 6, or slightly smaller than that of the elastic restoration sections 6, 6, and smaller than that of the central absorbent layer 4A. It is set to be large.
  • the boundary between the first rear crimping portions 15 F, 15 F and the first crimping portions 11 F, 11 F is defined by a vertical center line O y— O y
  • the central absorbent layer 4A has a convex shape in a direction away from the central portion, and the central absorbent layer 4A has a wide portion at the boundary.
  • the first rear crimping portions 15 F and 15 F gradually decrease in facing distance from the boundary portion toward the rear edge portion 1 d, and the first crimping portions 11 F and 11 F also The facing distance gradually decreases as going from the boundary to the lateral reference line Ox-Ox.
  • a liquid-impervious sheet is placed on the left and right sides of the skin side surface of sanitary napkin 1F. 20, 20 and leak-proof walls 21, 21 formed of the liquid-impermeable sheet 20 are provided.
  • the structures of the leak-proof walls 21 and 21 are the same as those shown in FIG. 1, and only the dimensions are different.
  • the boundary between the bonded portion and the non-bonded portion of the first surface 21a has an intermediate boundary 22a, a front boundary 22b, and a rear boundary 22c, where reference numeral 24a Indicates the rising start point in front of the leak-proof wall 21, and reference numeral 24 b indicates the rising start point behind the leak-proof wall 21.
  • the front rising start point 24 a is located near the front end of the elastic restoration section 6, and the front end 12 a of the second crimping section 12 F and the rising start point 24 a are connected.
  • the shortest linear distance is 45 mm or less, preferably 40 mm or less, and more preferably 25 mm or less.
  • the rear rising start point 24 b is located near the front end of the rear elastic restoration section 6F, and the rear starting point 24b and the front end 18G of the second rear crimping section 18F are connected to each other.
  • the distance is less than 45 mm.
  • a sanitary sanitary having a first rear crimping portion 15F and a second rear crimping portion 18F, and having a hip guard portion, which is vertically long and suitable for use at bedtime.
  • the hip guard near the buttocks is likely to twist or break. Therefore, it is preferable that the shortest linear distance between the rising start point 24 b behind the leakage preventing wall 21 and the front end 18 G of the second rear crimping portion 18 F is 2 O mm or less.
  • the rear part of the sanitary napkin 1F is applied to the buttocks, and the rear central absorbing part 5G fits into the groove of the buttocks. Since the rear elastic restoration portions 6F and 6F are also located on both sides of the rear central absorption portion 5G, for example, excessive wear from the wearer's body or underwear caused by a change in the posture (posture) of the wearer. Even if pressure is applied to the sanitary napkin 1F, the rear part is not easily deformed and easily recovers even if deformed, so it is easy to maintain the rear central absorption part 5G in close contact with the wearer's body .
  • the rising start point 24a in front of the leak-proof wall 21 is located near the elastic restoration section 6 and the rising starting point 24b in the rear is located near the rear elastic restoration section 6F, it is worn.
  • the positions of the starting points 24a and 24b are stable, and the leak-proof wall 21 is unlikely to be twisted or fall down toward the central absorbing portion 5F and the rear central absorbing portion 5G.
  • the rear central absorbent portion 5G is the force of the elastic member. Is pushed into the buttocks groove.
  • the first rear crimping portions 15F, 15F and the second rear crimping portions 18F, 18F are located on both sides of the rear central absorbing portion 5G, which are acceptable. Since it functions as a flexible shaft, the pushing force received from the underwear makes it easier for the rear central absorbing portion 5G to be in close contact with the buttocks.
  • FIG. 11 is a plan view showing a sanitary napkin 1G according to a seventh embodiment of the present invention.
  • the sanitary napkin 1G shown in FIG. 11 has a hip guard at the rear, but is slightly shorter in the vertical direction than the sanitary napkin 1F shown in FIG.
  • the crimping section 10G of the sanitary napkin 1G is the same as the crimping section of FIG. 10 except that the second crimping sections 12F, 12F and the second rear crimping sections 18F, 18F are continuous. It is formed in substantially the same pattern as the portion 10F.
  • the elastic restoring portions 6 and 6 are located on both sides of the central absorbing portion 5F, so that a sufficient restoring force against an external deformation force can be exerted.
  • the linear distance between the rising start point 24a in front of the leakage preventing wall 21 and the front end 12a of the second crimping portion 12F is 45 mm or less, preferably 40 mm or less, and more preferably 25 mm or less.
  • the shortest linear distance between the rear rising start point 24b and the second rear crimping portion 18F is 45 mm or less, preferably 25 mm or less.
  • the straight line distance can be considerably shortened, and 15 mm The following is also possible.
  • the rising starting points 24a and 24b, particularly the rear rising starting point 24b, are firmly reinforced by the rear elastic restoration portion 6F, so that the leakage preventing wall 21 is less likely to twist or fall.
  • FIG. 12 is a plan view showing a sanitary napkin 1H according to an eighth embodiment of the present invention.
  • the structure of the sanitary napkin 1 H is the same as that of the sanitary napkin 1 shown in FIG. 1 except for the wing portion 18.
  • the crimping portion 10H of the sanitary napkin 1H shown in FIG. 12 includes a first crimping portion 11H, 11H having an arcuate curve and a second crimping portion 12H, 12H, and the first crimping portions 11H, 11H and the second crimping portions 12H, 12H are formed at an equal distance.
  • the portion sandwiched between the first crimping portion 11H and the first crimping portion 11H is the central absorbing portion. 5H, and the portions sandwiched between the first crimping portions 11H, 11H and the second crimping portions 12H, 12H are the elastic restoration portions 6H, 6H.
  • the lateral crimping portions 13H, 13H located on the front and rear sides connect the second crimping portion 12H and the second crimping portion 12H. Therefore, the first crimping portion 11H, 11H and the elastic restoring portion 6H, 6H are within the area surrounded by the second crimping portion 12H, 12H and the lateral crimping portion 13H, 13H. It is located in.
  • the front extension crimping portions 14H, 14H and the rear extension crimping portions 15H, 15H are formed continuously with the second crimping portions 12H, 12H.
  • the elastic restoring portions 6H, 6H can exert a sufficient elastic restoring force in the lateral direction.
  • the second crimping part 1 Since the area surrounded by H, 12H and the horizontal crimping portions 13H, 13H is larger than the central absorbing portion 5H, the liquid absorbing capacity in the surrounded region can be increased.
  • the diffusion of menstrual blood given to the elastic restoring portions 6H, 6H between the first crimping portions 11H, 11H and the second crimping portions 12H, 12H is surrounded by It can be limited to the region where the menstrual napkin 1H has leaked.
  • FIG. 13 is a plan view showing a sanitary napkin 1J according to a ninth embodiment of the present invention.
  • This sanitary napkin 1 J has a crimping portion 10 J having a slightly different pattern from that of the sanitary napkin 1 E shown in FIG.
  • front extension crimping portions 14J, 14J and rear extension crimping portions 15J, 15J are continuous before and after the second crimping portions 12J, 12J.
  • the first crimping portion 11 J and the first crimping portion 11 J are located in a region between the second crimping portions 12 J, 12 J.
  • the portion sandwiched between the first crimping portion 11J and the first crimping portion 11J is a central absorbing portion 5J. ⁇ C
  • the elastic recovery portions 6 J and 6 J can also exert a sufficient lateral compression recovery force.
  • the outer region of the central absorbing portion 5 J has the second crimping portions 12 J and 12 J, the front extension crimping portions 14 J and 14 J, and the rear extension crimping portion 15 J in the longitudinally long range. , 15J, menstrual blood adhering to the elastic restoration portions 6J, 6J can be diffused in the longitudinal direction of the sanitary napkin 1J, and the effect of preventing lateral leakage can be enhanced.
  • the sanitary napkin 1 shown in FIG. 1 and FIGS. 2A and 2B also has a different pattern of the crimping portion, or By changing the material interposed between the first crimping portion 11 and the second crimping portion 12, the same manufacturing can be performed.
  • the absorbent layer 4 and the topsheet 3 are overlapped, and the two members are bonded as necessary.
  • the laminate is pressed from the top sheet 3 side to form the press-bonded portion 10.
  • the back sheet 2 is overlapped on the laminate and joined.
  • the embossing treatment may be performed from the outer surface side (from the clothing side surface) of the absorbent layer 4 or may be performed from both sides.
  • a case in which the absorbent layer 4 and the surface sheet 3 are overlapped and embossed from the side of the surface sheet 3 will be described below.
  • FIG. 14A is a plan view showing a part of the pressing member 100 from the pressing surface side
  • FIG. 14B is a cross-sectional view taken along line BB of FIG. 14A.
  • the pressing member 100 is provided with an embossed convex portion 110 whose pattern is transferred to the laminate as a crimping portion 100 shown in FIG.
  • the first crimping part 11 and the second crimping part 11 near the horizontal reference line O x—O x in FIG. Only a part of the embossed convex portion 110 forming the crimped portion 12 is shown.
  • a first bottom 115 facing the central absorbent portion 5 of the sanitary napkin 1 is formed on the left side of the embossed protrusion 110, and a side end on the right side.
  • a second bottom part 117 is formed opposite to.
  • the depth from the vertex of the embossed convex portion 110 to the first bottom portion 115 is indicated by D2, and the depth from the vertex to the second bottom portion 117 is indicated by D3. I have.
  • the depths D2 and D3 may be the same, or the first bottom portion 115 may be deeper because it is opposed to the relatively thick central portion absorbing portion 5.
  • a first convex portion 11 1 for forming the first crimp portion 11 and a second convex portion 1 for forming the second crimp portion 12 are shown. 1 and 2 are shown. As shown in FIG.
  • the elastic restoration portion 6 is formed by the concave portion 116.
  • the depth D1 from the apex to the bottom of the concave portion 116 is sufficiently shallower than the depths D2 and D3.
  • a pressing portion 111a is provided, and on both sides thereof, inclined surfaces 1lib and 11lb which gradually separate from the apex are formed. .
  • a pressurizing portion 112a is provided also at the tip of the second convex portion 112, and similarly, inclined surfaces 112b and 112b are formed.
  • the inclined surfaces 111b and 112b may be steep surfaces extending to the bottom surface of the concave portion 116.
  • a pressing surface 1 10 a for forming the high-density pressing portion 10 a, and a medium-density pressing portion 10 b are formed.
  • the pressing surface 110a and the shallow groove 11Ob are the same as the high-density crimping part 10a and the medium-density crimping part 1Ob.
  • the protrusions for forming the crimping portions 15 and 15 include a first protrusion 11 1 and a second protrusion 1 12 arranged side by side as shown in FIGS. Rather, only the first convex portion 111 is formed to rise from the first bottom portion 115 and the second bottom portion 117.
  • Another pressing member having a smooth surface is applied to the outer surface of the absorbing layer 4 and the surface of the surface sheet 3 is contacted.
  • the pressing member 100 shown in FIGS. 14A and 14B is applied to press the absorbing layer 4 and the topsheet 3 with both pressing members.
  • the pressure member is heated and pressurized as needed.
  • a crimp portion 10 as shown in FIG. 1 is formed on the laminate.
  • the absorbent layer 4 is pressurized by the concave portion 1 16 having the depth D 1, the absorbent layer is densely compressed at a position between the first crimping portion 11 and the second crimping portion 12. Is done.
  • the absorbent layer compressed at a high density is constrained by the surface sheet 3 between the first crimping portion 11 and the second crimping portion 12.
  • the central absorber 5 is substantially or hardly pressurized by the first bottom part 115.
  • the side end 7 is substantially or hardly pressurized by the second bottom portion 117. In this way, between the first crimping portion 11 and the second crimping portion 12, the absorbent layer is compressed at a high density, and the density is further increased by the central absorbing portion 5 and the side end 7. Can be high enough.
  • the absorbent layer compressed at a high density becomes the elastic restoration layer 4 #.
  • the high-density-compressed absorbent layer formed between the crimping portions 11 and 12 is shown not only as the elastic restoration layer 4 ⁇ but also as shown in FIG.
  • the central absorbent portion 5 is supported from below, and can also function as a support portion that adheres to the vaginal opening.
  • the pressing member 100 and the pressing member having a smooth surface can be configured as a surface structure of rolls facing each other, or can be configured as a flat pressing member.
  • the crimped portion was sandwiched between the first crimped portion 11B and the second crimped portion 12B of the crimped portion dot as shown in FIG. It is also possible to increase the density of the absorbing layer.
  • the capability of restoring the central absorbing portion in the lateral direction when the compressive force in the lateral direction is reduced is enhanced.
  • the absorbent article can easily recover from a deformed state such as twisting. Therefore, it is easy to always adhere to the excretory part of the wearer's body, and it is easy to prevent the excreted liquid from leaking sideways.

Abstract

L'invention concerne un article absorbant comprenant une feuille de dessus perméable aux liquides (3), positionnée sur la surface côté peau, une feuille de dessous (2) positionnée sur la surface côté vêtement, et une couche d'absorption (4) positionnée entre elles. Des premières (11) et secondes (12) sections de contact pression, où la couche d'absorption, et la feuille de dessus au moins, sont comprimées, s'étendent le long de l'article absorbant. Les premières sections de contact pression sont disposées symétriquement par rapport à la ligne centrale longitudinale (Oy-Oy) de l'article absorbant et définissent une section centrale d'absorption (5) entre les deux contenant une couche d'absorption. Les secondes sections de contact pression sont symétriquement disposées par rapport à la ligne centrale longitudinale et sont espacées vers l'extérieur à partir des premières sections de contact pression. Lorsque la section d'absorption centrale est comprimée transversalement par une force extérieure, les sections élastiques de récupération (6) définies entre les premières et les secondes sections de contact pression adjacentes formant des paires, peuvent appliquer une force de récupération dirigée contre la force de compression.
PCT/JP2003/011408 2002-09-09 2003-09-08 Article absorbant a sections elastiques de recuperation et procede de production associe WO2004021947A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AU2003261984A AU2003261984A1 (en) 2002-09-09 2003-09-08 Absorbent article having elastic recovery sections, and method of producing the same
US11/059,132 US7550646B2 (en) 2002-09-09 2005-02-15 Absorbent article with resilient portion and method for manufacturing the same

Applications Claiming Priority (4)

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JP2002263453 2002-09-09
JP2002-263453 2002-09-09
JP2002276393A JP4180866B2 (ja) 2002-09-09 2002-09-20 弾性復元部を有する吸収性物品およびその製造方法
JP2002-276393 2002-09-20

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WO2004021947A1 true WO2004021947A1 (fr) 2004-03-18

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KR (1) KR101013477B1 (fr)
CN (2) CN1961851B (fr)
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JP4771756B2 (ja) 2005-06-17 2011-09-14 ユニ・チャーム株式会社 吸収性物品
JP4913381B2 (ja) 2005-09-26 2012-04-11 ユニ・チャーム株式会社 吸収性物品
US8764718B2 (en) * 2005-12-15 2014-07-01 Sca Hygiene Products Ab Absorbent article
JP4974524B2 (ja) * 2005-12-27 2012-07-11 花王株式会社 吸収性物品
US8173858B2 (en) * 2006-11-22 2012-05-08 Uni-Charm Corporation Absorptive article and method of producing the same
KR20090084923A (ko) 2006-12-13 2009-08-05 유니챰 가부시키가이샤 흡수성 물품
CN101474112B (zh) * 2008-01-02 2013-09-18 金佰利（中国）有限公司 具有沟道的吸湿性物品
JP5305812B2 (ja) * 2008-09-30 2013-10-02 大王製紙株式会社 吸収性物品
JP5749907B2 (ja) * 2010-08-31 2015-07-15 ユニ・チャーム株式会社 吸収性物品及び生理用ナプキン
JP5631124B2 (ja) * 2010-08-31 2014-11-26 ユニ・チャーム株式会社 失禁用ライナー
JP5766253B2 (ja) * 2013-11-14 2015-08-19 ユニ・チャーム株式会社 吸収性物品
JP5766254B2 (ja) * 2013-11-14 2015-08-19 ユニ・チャーム株式会社 吸収性物品
WO2015072502A1 (fr) * 2013-11-14 2015-05-21 ユニ・チャーム株式会社 Article absorbant
JP6458102B1 (ja) * 2017-08-30 2019-01-23 大王製紙株式会社 吸収性物品
JP6922566B2 (ja) * 2017-09-06 2021-08-18 王子ホールディングス株式会社 吸収性物品
JP7039274B2 (ja) * 2017-12-14 2022-03-22 花王株式会社 吸収性物品
JP7263189B2 (ja) 2019-09-19 2023-04-24 大王製紙株式会社 吸収性物品
WO2023105801A1 (fr) * 2021-12-10 2023-06-15 ユニ・チャーム株式会社 Article absorbant

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CN101184459B (zh) * 2005-06-02 2012-12-12 宝洁公司 具有横向加强元件的吸收制品
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US8878000B2 (en) 2005-06-02 2014-11-04 The Procter & Gamble Company Absorbent article having traverse reinforcing element
US9655788B2 (en) 2005-06-02 2017-05-23 The Procter & Gamble Company Absorbent article having traverse reinforcing element

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AU2003261984A1 (en) 2004-03-29
JP2004154154A (ja) 2004-06-03
JP4180866B2 (ja) 2008-11-12
CN1961851A (zh) 2007-05-16
TW200414893A (en) 2004-08-16
KR101013477B1 (ko) 2011-02-14
CN1662201A (zh) 2005-08-31
KR20050035867A (ko) 2005-04-19
CN100409829C (zh) 2008-08-13
MY156055A (en) 2015-12-31
TWI230056B (en) 2005-04-01
AU2003261984A8 (en) 2004-03-29
CN1961851B (zh) 2011-07-13

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