WO2006134906A1 - Absorbent article - Google Patents

Absorbent article Download PDF

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Publication number
WO2006134906A1
WO2006134906A1 PCT/JP2006/311818 JP2006311818W WO2006134906A1 WO 2006134906 A1 WO2006134906 A1 WO 2006134906A1 JP 2006311818 W JP2006311818 W JP 2006311818W WO 2006134906 A1 WO2006134906 A1 WO 2006134906A1
Authority
WO
WIPO (PCT)
Prior art keywords
absorbent body
upper layer
lower
layer absorbent
upper
Prior art date
Application number
PCT/JP2006/311818
Other languages
French (fr)
Japanese (ja)
Inventor
Takuo Nomura
Satoko Konawa
Original Assignee
Daio Paper 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
Priority to JP2005173595A priority Critical patent/JP4969062B2/en
Priority to JP2005-173595 priority
Priority to JP2005-174173 priority
Priority to JP2005174173A priority patent/JP4954502B2/en
Application filed by Daio Paper Corporation filed Critical Daio Paper Corporation
Publication of WO2006134906A1 publication Critical patent/WO2006134906A1/en

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Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F13/00Bandages or dressings; Absorbent pads
    • A61F13/15Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/45Absorbent 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
    • A61F13/47Sanitary towels, incontinence pads or napkins
    • A61F13/475Sanitary towels, incontinence pads or napkins characterised by edge leakage prevention means
    • A61F13/4751Sanitary towels, incontinence pads or napkins characterised by edge leakage prevention means the means preventing fluid flow in a transversal direction
    • A61F13/4752Sanitary towels, incontinence pads or napkins characterised by edge leakage prevention means the means preventing fluid flow in a transversal direction the means being an upstanding barrier
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F13/00Bandages or dressings; Absorbent pads
    • A61F13/15Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/45Absorbent 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
    • A61F13/47Sanitary towels, incontinence pads or napkins
    • A61F13/472Sanitary towels, incontinence pads or napkins specially adapted for female use
    • A61F13/47218Sanitary towels, incontinence pads or napkins specially adapted for female use with a raised crotch region, e.g. hump
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F13/00Bandages or dressings; Absorbent pads
    • A61F13/15Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/45Absorbent 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
    • A61F13/47Sanitary towels, incontinence pads or napkins
    • A61F13/475Sanitary towels, incontinence pads or napkins characterised by edge leakage prevention means
    • A61F13/4751Sanitary towels, incontinence pads or napkins characterised by edge leakage prevention means the means preventing fluid flow in a transversal direction
    • A61F13/4752Sanitary towels, incontinence pads or napkins characterised by edge leakage prevention means the means preventing fluid flow in a transversal direction the means being an upstanding barrier
    • A61F13/4753Sanitary towels, incontinence pads or napkins characterised by edge leakage prevention means the means preventing fluid flow in a transversal direction the means being an upstanding barrier the barrier being not integral with the topsheet or backsheet
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F13/00Bandages or dressings; Absorbent pads
    • A61F13/15Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/45Absorbent 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
    • A61F13/47Sanitary towels, incontinence pads or napkins
    • A61F13/475Sanitary towels, incontinence pads or napkins characterised by edge leakage prevention means
    • A61F13/4751Sanitary towels, incontinence pads or napkins characterised by edge leakage prevention means the means preventing fluid flow in a transversal direction
    • A61F13/4756Sanitary towels, incontinence pads or napkins characterised by edge leakage prevention means the means preventing fluid flow in a transversal direction the means consisting of grooves, e.g. channels, depressions or embossments, resulting in a heterogeneous surface level

Abstract

[PROBLEMS] An absorbent article which has an absorbent comprising an upper-layer absorbent and a lower-layer absorbent underlying the upper-layer absorbent and which has improved liquid permeability through the upper-layer absorbent into the lower-layer absorbent while maintaining a rate of absorption in the upper-layer absorbent and hence has an excellent balance between the two properties. [MEANS FOR SOLVING PROBLEMS] The upper-layer absorbent (4A) comprises at least pulp fibers and synthetic fibers, the proportion of the pulp fibers to the synthetic fibers being (80-20):(20-80) by weight. The upper-layer absorbent (4A) has been superposed on the lower-layer absorbent (4B) without using any adhesive. That part of the upper-layer absorbent (4A) which extends from the upper side and/or periphery of the absorbent (4A) toward the lower-layer absorbent (4B) is embossed.

Description

Specification

The absorbent article

Technical field

[0001] The present invention is a sanitary napkin for absorbing and menstrual blood and textiles, pantiliners one relates to absorbent articles of the incontinence pad or the like, details absorber to the upper layer absorbent body and the lower layer absorbent body It relates to an absorbent article which is a laminated structure. BACKGROUND

[0002] Conventionally, panty liners, sanitary napkins, as absorbent articles such as incontinence pads, and the liquid-impermeable back surface sheet over preparative such as polyethylene sheet or a polyethylene sheet laminate nonwoven fabric, such as a nonwoven fabric or a liquid-permeable plastic sheet is known in which interposed an absorber made of cotton-like pulp or the like between the liquid permeable topsheet.

[0003] numerous improvements are piled in this kind of absorbent articles, it means the seed s to prevent leakage of body fluids have been taken. One of these fluids leak preventing means, to form a domed section was Atsushi increasing the surface side central region in substantially the absorber allowed improving the fit of the Haiti section Rutotomoni, the shape of the domed section absorbent article so as to apply a linear embossed on the outside position of the periphery of the domed section for holding is known (see below Patent documents 1 to 3 etc.).

[0004] Each absorbent article Niore described above Te, when a defibration pulp crushed pulp is used as absorber, or the pulp dropping fiber stacking on the line, the pulp fibers so as not to adversely affect to equipment by sticking or the like, and is surrounded by the product 繊後 immediately crepe paper. In this case, as in the case of defibration pulp absorber with a domed section is shown in FIG. 16 (A), defibrated pulp constituting the defibrated pulp layer 54 and the domed section absorber constituting the general portion absorber and aspects surrounding by crepe paper 56 a layer 55 collectively, as shown in FIG. 16 (B), after surrounding the defibrating Panorepu layer 54 which constitutes the general portion absorber with crepe paper 56, similarly click Leeb paper the defibration Panorepu layer 55 forming the domed section absorber is surrounded by 56 or the like manner to the product layer thereon.

Patent Document 1: JP-A 10- 328233 JP Patent Document 2: JP-A 11 358 discloses

Patent Document 3: JP-A 11 33054 discloses

Patent Document 4: Kohyo 9 505 218 JP

Disclosure of the Invention

Problems that the Invention is to you'll solve

[0005] As described above the discharge, when the domed section absorber (upper layer absorber) the general portion absorber (lower layer absorber) absorber is laminated on surfaces of the body fluid such as menstrual blood in the upper layer absorbent body is, to penetrate the upper layer absorbent body, a part thereof is absorbed and retained in the upper layer absorbent body, that many of the rest are held absorption of the lower absorbent body reaches the lower absorbent body passed through the upper layer absorbent body desired place, in reality had caused the majority of the body fluid is in is absorbed and retained in the upper layer absorbent body Shimare ,, upper absorber saturation shaped on purpose or summer, it tends to occur back under pressure.

[0006] On the other hand, binding of upper layer absorbent body and the lower absorbent body, other methods of preventing positional deviation embossed at the periphery of the upper layer absorbent body, joined by an adhesive and a top layer absorbent body and the lower layer absorbent body has been conducted to (see Patent Document 4 and the like) is, liquid permeability may be inhibited by the adhesive, the body fluid passing amount reaching the lower absorbent body has a problem such as accidentally reduced.

[0007] Furthermore, according to findings by the present inventors, crepe paper: 0. 25 cm 3 / sec, pulp + poly mer: such as 0. 38cm 3 / sec, a low diffusion rate in a relatively crepe paper there Natsute. As described above, with surrounding the upper absorbent body with crepe paper, if the structure surrounding the lower absorbent body in click Leeb paper, clay-flop paper multilayered between the upper absorbent body and the lower absorbent body interposed is the result to be, remains fluid in the multi-layer crepe paper is absorbed and retained, the transition fluid to the underlying absorbent body was caused to decrease.

[0008] Therefore a main object of the present invention, the absorbent article comprising an absorbent body formed by laminating an upper layer absorbent body and the lower layer absorbent body, when improving the liquid permeability to the underlying absorbent body from the upper layer absorbent body at the same time, to provide a suction Osamusei article having an excellent balance of mutual maintaining absorption rate in the upper layer absorbent body.

Means for Solving the Problems

[0009] As the present invention according to claim 1 for solving the above problem, with the absorber is interposed between a liquid permeable top sheet and back Kushito, the absorber layer absorbent body and the lower layer absorbent body in absorbent articles with laminated structure and,

Together with the upper layer absorbent body comprising at least pulp fibers and synthetic fibers, said pulp fibers: the ratio of the synthetic fiber by weight is 80 to 20: and 20 to 80,

Wherein the upper layer absorbent body and the lower layer absorbent body are laminated without using an adhesive, characterized tare Rukoto grant embossed toward the top and Z or peripheral outside of the upper layer absorbent body to the lower absorbent body direction the absorbent article is provided.

[0010] In the present invention according to the first aspect, together with the upper layer absorbent body comprises at least pulp fibers and synthetic fibers, said pulp fibers: the ratio of the synthetic fiber by weight is 80 to 20: 20 to 80 it is an. Although the body fluid permeability of the larger the mixing ratio of the synthetic fibers from the upper layer absorbent body to the lower layer absorber is improved, or synthetic fibers have no water absorption, water absorption even those subjected to hydrophilic treatment low order, the absorption rate of body fluids resulting in decreased. However, by the mixing ratio of the synthetic fibers and 20 to 80 wt%, it is possible to hold the EkiToru excessive rate of the upper layer absorbent body sufficiently be secured, and the absorption rate over the required performance

[0011] In addition, another by the upper absorbent body and the lower absorbent body by stacking without the use of adhesive, and applying child embossed toward the top and / or peripheral outside of the upper layer absorbent body to the lower absorbent body direction since so as to prevent the positional deviation of, prevents the adhesive liquid permeability ranging from the upper layer absorbent body to the lower layer absorbent body to inhibit, the liquid permeability of the upper layer absorbent body can be sufficiently secured.

[0012] As the present invention according to claim 2, the body fluid permeability in the upper absorbent body is provided an absorbent article according to claim 1, wherein the 85% or more.

[0013] the liquid permeability in the upper layer absorbent body is specifically it is desirable that 85% or more. The liquid permeability, as defined in the first aspect of the present invention, and 20 wt% or more of mixed-ratio synthetic fibers of the upper layer absorbent body with respect to the total amount of pulp fibers and synthetic pulp, and the upper absorbent body may be the lower layer absorbent body to achieve with be laminated without using an adhesive

[0014] As the present invention according to claim 3, the liquid-permeable top sheet surface, 3. 5 cc of artificial menstrual blood 8.7 th absorption rate when imbibed seven times every 5 minutes 25 seconds the absorbent article according to at which of claims 1, 2 have displacement less is provided.

[0015] the liquid permeable top sheet surface, it is preferable seventh absorption rate when allowed to 8. absorbed seven times every 5 minutes artificial menstrual blood 3. 5 cc is less than 25 seconds. The rate of absorption, as specified in the first aspect of the present invention, the mixing ratio of the synthetic fibers of the upper layer absorbent body is achieved by a 80% by weight or less based on the total amount of pulp fibers and synthetic pulp can.

[0016] As the present invention according to claim 4, wherein the upper layer absorbent body and the lower absorbent body is by connexion surrounded by the crepe paper, the upper surface of the bottom and Z or the underlying absorbent body at least the upper layer absorbent body, the opening in the crepe paper the absorbent article according to claim 1 or being formed is provided.

[0017] The invention as described above fourth aspect defines an enclosed form by crepe paper of the absorber. Crepe paper present on the boundary surface of the upper layer absorbent body and the lower absorbent body, the smaller is improved liquid permeability. However, you can pulp falling off fiber stacking on the line, even to produce the need to surround the absorber with crepe paper so as not to adversely affect the equipment by sticking or the like of the pulp fibers, crepes in boundary surface by forming the opening in the paper, by omitting the reducing the number of layers of the crepe paper or crepe paper, it is possible to reduce or eliminate impediments to liquid permeability.

[0018] As the present invention according to claim 5, in a state in which a laminate of the upper layer absorbent body and the lower layer absorbent body, any one of claims 1 to 3 that is surrounded these upper layer absorbent body and the lower absorbent body crepe paper the absorbent article according is provided.

[0019] The invention as described above fifth aspect defines an enclosed form by crepe paper of the absorber. Crepe paper present on the boundary surface of the upper layer absorbent body and the lower absorbent body, the smaller is improved liquid permeability. However, you can pulp falling off fiber stacking on the line, even to produce the need to enclose Nyo absorber with crepe paper so that no adverse effect on the equipment due to sticking or the like of the pulp fibers, the upper layer absorbent body and in a state in which the lower absorbent body obtained by laminating, surrounding these upper layer absorbent body and the lower absorbent body in crepe paper, by direct contact with the upper layer absorbent body and the lower layer absorbent body, the inhibition factor of the liquid-permeable it can be eliminated.

Effect of the invention

[0020] According to the present invention as detailed above, the body fluid permeability of the absorbent article Niore comprising an absorber formed by laminating an upper layer absorbent body and the lower layer absorbent body Te, to the underlying absorbent body from the upper layer absorbent body at the same time improve the sex, maintaining the absorption rate in the upper layer absorbent body becomes a superior balance of each other.

BEST MODE FOR CARRYING OUT THE INVENTION

[0021] Hereinafter will be described in detail with reference to the drawings, embodiments of the present invention.

[Basic structure of sanitary napkin 1]

Figure 1 is a development view of a sanitary napkin 1 according to a first embodiment of the present invention, FIG. 2 II II view taken along line of FIG. 1, FIG. 3 is a III III taken along line diagram of FIG.

[0022] The sanitary napkin 1 includes a liquid-impermeable back sheet 2 made of a polyethylene sheet, a liquid-permeable top sheet 3 which transmits such a rapidly menstrual blood and fabrics, these two sheets 2, 3 while absorber 4 made of interposed cotton-like pulp or synthetic pulp, and 6, and the crepe paper 5 surrounding the absorber 4 for the shape retention and diffusibility improvement of the intake absorbent body 4, the absorbent a substantially side edge of the body 4 and a standing base end, and at least the front and rear so as to include a body fluid discharging portion direction to the right and left pair of which protrudes from the surface side within a predetermined section standing gathers BS, mainly from the BS It is configured, and the in the periphery of the absorbent body 4, the upper the lower edge outer edges of said liquid-impermeable back sheet 2 and the liquid-permeable top sheet 3 is such as adhesive or heat sealing, such as hot melt joined by adhesive means It is also bonded between the impermeable back sheet 2 that extends laterally than the absorption body 4 at both side edge portions thereof, and the side nonwoven fabrics 7 forming the stereo formic Yaza BS is a hot-melt agents and are joined by adhesive means of heat sealing or the like, the wing-shaped flaps W projecting laterally through the laminated sheet portions by with these impermeable back sheet 2 and the side nonwoven fabric 7, W is formed les, Rutotomoni , the second wing shape flaps W, W is a form in a portion located on the buttocks side of this

BB

It has been made.

[0023] Hereinafter, further detail for the construction of the sanitary napkin 1,

The liquid-impermeable back sheet 2, in recent years the force which the sheet material is used having at least impermeability such as polyethylene in tendency to are used those having aspects force moisture permeability of preventing stuffiness. As the water barrier 'moisture vapor permeable sheet material, after molding the sheet by melt-kneading an inorganic filler in O Les fin-based resins such as polyethylene and polypropylene, obtained by stretching uniaxially or biaxially fine the porous sheet is preferably used. The one or plural rows of pressure-sensitive adhesive layer to the non-use surface side of the liquid-impermeable back sheet 2 (the outer surface) (not shown) is formed, so as to secure the sanitary napkin 1 to the undergarment when worn on the body It has become. Examples of the impermeable back sheet 2, may be used port Rirami nonwoven fabric obtained by laminating a plastic film and nonwoven fabric.

[0024] Then, the liquid permeable top sheet 3, such as a perforated or nonporous nonwoven fabric or a porous Plasti Kkushito is preferably used. The material fibers constituting the nonwoven fabric, polyethylene emissions or Orefin system such as polypropylene, polyester, other synthetic fibers, polyamide or the like, can be recycled fibers such as rayon Ya cupra, natural fibers such as cotton to, Supanre over scan method, spun bond method, thermal bond method, or a melt blown method, nonwoven fabrics obtained by proper processing methods needle punching method or the like. Among these processing methods, the spun lace method is flexible, excellent in rich drapability, thermal bonding method is excellent in that they are bulky and soft. Wherein in the case of forming a plurality of through holes in the liquid permeable top sheet 3, such as menstrual blood and woven (hereinafter collectively referred to as body fluid.) Ri Na as is absorbed quickly, excellent Doraitatsuchi properties the things.

[0025] The absorbent body 4, the upper layer absorber 4A and a lower layer absorber 4B is a laminated structure. Before Symbol lower absorbent body 4B has a planar shape defining the outer edge of the absorber arrangement region, the upper layer absorber 4A is a region defined elongated in the napkin longitudinally central portion in the width direction, using surface They are arranged to form a convex portion 6 of the high absorber. The thickness of the domed portion 6, the adhesion to the body increases the rigidity of the absorber 4 is too thick is reduced 3 to 20 mm, preferably 5: Les Shi preferable that a 15 mm,. Wherein with the near outer portion located along the periphery of the upper layer absorbent body 4A embossing 8 closing in the circumferential direction is applied, Enbo scan 9, 10, 11 are formed. The embossed 8 while preventing the position's Les upper absorber 4A, Ru embossed der granted to closely define the domed section 6. Incidentally, each of these embossed 8: 11 will be described later in more detail about.

[0026] The upper layer absorber 4A, as well as comprising at least pulp fibers and synthetic fibers, said pulp fibers: the ratio of the synthetic fiber by weight is 80 to 20: 20 to 80, preferably 40 to 60: 6 and a mixture in the 0 to 40. According to the embodiment described below, liquid permeability of the mixing ratio of the synthetic fibers of the upper layer absorbent body 4A from the upper layer absorbent body 4A by 20 wt% or more based on the total amount of pulp fibers and synthetic pulp to lower absorbent body 4B rate of it is possible to less than 85%, and the mixing ratio of the synthetic fibers of the upper layer absorbent body 4A in the liquid-permeable top sheet surface by 80 wt% or less based on the total amount of pulp fibers and synthetic pulp , can be this and force s to the rate of absorption of the seventh when was 8. absorbed seven times every five minutes the artificial menstrual blood of 3. 5cc less than 25 seconds. Further, when the mixing ratio of the synthetic fibers of the upper layer absorbent body 4A was 40-60 wt% based on the total amount of pulp fibers and synthetic pulp, the liquid permeability from the upper absorbent body 4A to the underlying suction absorbent body 4B 88. /. Above, it can be not more than the absorption rate 24 seconds.

[0027] The upper layer absorber 4A is top surface of functionally with the first function to penetrate the absorbed body fluids but quickly to cause the body fluid to the underlying absorbent body 4B side without hold internally liquid-pervious topsheet 3 where it is necessary to balance to well satisfy both the second function of absorbing quickly a body fluid discharged, too by mixing synthetic fiber in order to improve the permeability of the first functional, the synthetic fibers are absorbent or not have, water absorption even those subjected to hydrophilic treatment rate of absorption of the body fluids due to the low will be lowered. If Keichiryou is particularly many people, because to prevent leakage of 1 hour napkin after mounting, the liquid permeability of the upper layer absorbent body 4A 85% or more, the absorption rate is preferably set to 25 seconds or less, synthetic the mixing ratio of the fibers and pulp fibers is in the above numerical value, so the first function and the second function can be well-balanced both. Further, it becomes possible to maintain the cushioning retains the bulk without collapsible by mixing synthetic fiber in the upper layer absorber 4A even when the body fluid absorbing state.

[0028] The synthetic fibers, such as polyethylene or polyolefin system such as polypropylene, polyethylene ethylene terephthalate Ya polybutylene terephthalate polyester-based, nylon such which polyamide, and to be able to use such a copolymer thereof, good record, even a mixture of these two. Further, it is possible to use core-sheath type fibers or side-by-side fibers with low fiber melting point as a core with a high melting point fibers and the sheath, also composite fibers such as splittable fibers. The synthetic fibers to have affinity for body fluids, Le is the case of hydrophobic fibers Shi desirable to use those surface treated with hydrophilizing agents.

[0029] the upper layer absorber 4A can contain a highly water-absorbent resin. As the superabsorbent resin such as polyacrylic acid salt crosslinked product, self-crosslinked polyacrylate, saponified Atarinore ester acetate Bulle copolymer cross-linked product, isobutylene 'maleic anhydride copolymer crosslinked product, polysulfone or salt crosslinked product, polyethylene O dimethylsulfoxide, those were the water-swellable polymers such as poly acrylamide and partially crosslinked, and the like. Of these, water absorption, it is preferred that the acrylic acid or acrylate-based excellent water absorption speed. Superabsorbent resin having a water absorption performance in the manufacturing process, it is possible to adjust the absorbency and water absorption rate by adjusting the crosslink density and the crosslinking density gradient. Because the amount is that the need upper layer absorber 4A promotes penetration to the underlying absorbent body 4B side, a so-called gel blocking phenomenon allowing a larger amount occurs, 1 by weight is relative to the total weight of pulp fibers and synthetic fibers ~: it is desirable to incorporate a 10% rate. Incidentally, the superabsorbent polymer content of 50

Do Re, desirable because there is no entanglement between pulp fibers, tear and cracks sheet strength decreases is liable to occur when more than percent.

[0030] The pulp fibers include chemical pulp obtained from wood, and cellulose textiles such as molten pulp, rayon, include those composed of artificial cellulose fiber acetate, etc., rather than hardwood pulp long softwood pulp fiber length Write is preferably used in terms of function and cost.

[0031] On the other hand, the lower layer absorber 4B is not a requirement that it contains synthetic fibers, it can be a mixture of pulp fibers alone, or pulp fibers and superabsorbent polymer. Lower absorbent body 4 B is not emphasized permeability, Do contain upper absorbent body 4A to hold internally permeated body fluid from Les such seep to the outside, so holding that it Shi desired record, since synthetic fibers Les, who is so is rather desirable. The content of the superabsorbent resin, in order to water retention to absorb body fluids, for mixing in a proportion of 1-20% wt% based on the total weight of the fibers constituting the lower layer absorber 4B is desirable.

[0032] wherein at each the upper absorbent body 4A and the lower layer absorber 4B is surrounded by crepe paper 5, when surrounding the absorber 4A, and 4B the crepe paper 5, and the upper absorbent that is enclosed by crepe paper 5 even when stacking the body 4A and the lower layer absorber 4B, as shown in the schematic diagram of FIG. 4 which Nag be used an adhesive order to joining the (a), position shift of the upper layer absorbent body 4A is an upper layer It may be carried out by embossing 8 provided around the absorbent body 4A.

[0033] Further, the upper layer absorbent body 4A which is surrounded by a crepe paper 5, when stacking the lower layer absorber 4B, which is surrounded by a crepe paper 5, the boundary surface between the upper absorbent body 4A and the lower layer absorber 4B is will be doubly crepe paper 5 are laminated, the crepe paper 5 inhibits liquid permeability. However, you can pulp shedding was fiber stacking on the line, resulting the need to enclose Nyo absorber 4A, and 4B in crepe paper 5 so as not to adversely affect on the equipment due to sticking or the like of the pulp fibers Therefore, in the above surface of the bottom and Z or the lower layer absorber 4B of the upper layer absorbent body 4A, that an opening is formed in the crepe paper 5 desirable. FIG. 4 (B) is an example of forming an opening in crepe paper 5 on the upper surface of the lower layer absorber 4B, FIG. 4 (C) is an example of forming an opening in crepe paper 5 to the lower surface of the upper layer absorbent body 4A, Furthermore, FIG. 4 (D) is Ru example der an opening is formed in the crepe paper 5, respectively, in the lower surface of the upper surface and the upper absorber 4A of the lower layer absorber 4B. Further, embossed 8 to prevent the displacement of the upper layer absorbent body 4A is not limited to the outer periphery of the upper layer absorber 4A, the emboss 8 so as to impart toward the upper surface of the upper absorbent body 4A in the lower layer absorber 4B direction even good record,. In this case, the recess in the embossed 8 to perform the lower layer absorber 4B Shokure, under high pressure, as writing.

[0034] Further, in order to eliminate the inhibition of liquid-permeable due to crepe paper 5, as shown in FIG. 5 (A), in a state of being stacked and the upper layer absorber 4A and a lower layer absorber 4B, these yo les, even so as to surround the upper absorber 4A and a lower layer absorber 4B with crepe paper 5. Incidentally, there is shown an example of applying the emboss 8 embossed 8 from the peripheral external and middle of the upper layer absorbent body 4A in FIG. 5 (B) Hasa al.

[0035] On the other hand, the width of the liquid permeable top sheet 3, in the illustrated embodiment, as shown in cross-sectional view of FIG. 2 and FIG. 3, is slightly longer than the width of the absorbent body 4, the absorbent body 4 stops just covered, the standing gathers BS another side nonwoven fabric 7 is said liquid permeable topsheet 3, specifically to prevent the penetration of menstrual blood and textiles etc., or increase the sense of touch if purpose, such as, is constructed using a nonwoven material which has been subjected to appropriate water repellent treatment or hydrophilic treatment. Such side nonwoven fabric 7, natural fibers, as synthetic fibers or materials such as recycled fibers, with can be used those formed by appropriate processing methods, rather preferably eliminates the feeling with rubber Wa, stuffiness to prevent, good to use gave a breathable nonwoven fabric with reduced basis weight. Specifically, silicon basis weight in order to reliably prevent the permeation of desirable equipment and fluids to use a fabricated nonwoven fabric as 18~23g / m 2, paraffin-based, Arukiruku port Mikkukurorido water repellent nonwoven cloth coated with an system water repellent is preferably used.

[0036] The side nonwoven fabric 7, FIG. 2 and as shown in FIG. 3, liquid-impermeable back sheet 2 slightly beyond the absorbent side edges from the inside position of the absorption body 4 an outer portion content than the width direction intermediate portion adhere to range up to the outer edge by an adhesive such as Wataru connexion hot melt, by a laminated sheet portions of these said side nonwoven fabric 7 and the liquid-impermeable back sheet 2, it corresponds substantially fluid discharge portion absorption side portions a pair of left and right wing flaps W to the position, to form a W, is formed from the second wing-like flaps W to the buttocks side position, the W it. These wing-like flash

BB

Flop W, W and the second wing shape flaps W, respectively on the outer surface side of the W adhesive layer 12

BB

..., 13 ... comprises a, as shown in FIG. 14, when worn against shorts 30, the win grayed-like flaps W, W are folded to the opposite side at the folding line RL position, wrapped around the crotch portion partial shorts stop Les so as to wear, Ru.

[0037] On the other hand, the inner side portion of the side nonwoven fabric 7 with is folded almost double, inside the double sheet, filamentous appropriate position across or longitudinally to the height direction intermediate portion is fixed with the resilient and elastic members 19 are disposed, the filamentous elastic stretchable plurality of the upper side portion of the member 19, the two thread resilient and elastic members 20, 20 are appropriately position the ends or longitudinal in the illustrated example the fixed It is arranged in a state of being. As it is shown in Figure 3 by the double sheet portion is the front and rear ends, by being adhered to the absorber 4 side in a state of being stacked folded cross section Z-shaped, said threadlike resilient and elastic members 19 disposed position of as the bending point, the pocket P with its opening to the inside cross section dogleg shape, standing gathers BS erected on the surface side while forming the P, BS are formed.

[0038] Manufacturing Method of the upper absorber 4A]

The upper layer absorber 4A is intended to be an absorber obtained by mixing at a predetermined ratio to the pulp fibers and synthetic fibers, as described above, the following device is used for good suited for the production of the upper layer absorbent body 4A that.

[0039] First, the upper layer absorber 4A is manufactured by the manufacturing apparatus 30 shown in FIG. 6, for example. Or force absorber manufacturing apparatus 30 Ru, are baled synthetic fibers 15, 15 ... and the first fiberizer 3 1 fibrillating, first feed path 32 for feeding the defibrated synthetic fibers and a delivery fan 33 provided in the middle, along with synthetic fibers is fed through the first feed path 32 is temporarily stored, a quantitative feeder one 34 quantitatively Dzu' feed Kyusuru, this fibrillation and second feed path 35 and delivery fan 36, feeding amount adjusting damper 37 provided in the middle for feeding the synthetic fibers from quantitative feeder one 34, a pulp fiber sheet 14 supplied while, the second fiberizer 38 which synthetic fibers is fed through the second feed path 35 is mixed, to carry put the air flow mixing fibers made of pulp fibers and synthetic fibers a supply Ke one single 39 to fiber stacking the mixed fibers sent through the supply casing 39 fiber stacking 40, consisting of the transfer drum 41. which is disposed to be opposed to the product opening machine 40.

[0040] The fiber stacking apparatus 40, the absorbent-forming recess 42a at appropriate intervals on the outer circumferential surface, 42a ... with obtaining Bei a, (not shown) and a plurality of suction holes on the bottom of the absorber-forming recess 42a the product 繊用 rotary drum 42 that have a consists suction Chiya Nba 43 disposed on the inner side of the product 繊用 rotary drum 42, Wei into said suction chamber 43 is a negative pressure by a suction means that is not shown and is adapted to fiber stacking the absorber structure fibers air conveyed to the absorber forming recessed portion 42a by being equity. Note that the supply casing 39, a polymer inlet 44 for supplying provided superabsorbent polymers one particulate material together with the pulverized pulp.

[0041] absorber 4A which is transferred to the transfer drum 41 is transferred by suction by the vacuum device 45 to the upper surface of the crepe paper 5 conveyed on vacuum conveyor is fed transportable on a conveyor.

[0042] To produce the force Cal absorber manufacturing apparatus 30 an upper absorber 4A is defibrating bales (bale) to be molded synthetic fibers by the first fiberizer 31, defibrated synthetic textiles and temporarily stores the feed to the quantitative feeder 34. Synthetic fibers stored in quantitative feeder one 34 is cut a certain amount Dzu' by feeder one drum 34a, it is sent to the second defibrator 38 via the second feed path 35. Feed amount of the synthetic fibers is carried out by further adjusting the opening of the feeding amount adjusting damper 37.

[0043] In the second fiberizer 38, pre wind-coiled taken pulp fibers coils (not shown) force fed pulp fiber sheet 14 was is supplied at a predetermined speed, thus solutions to the grinding drum 38a with the fiber, Ru is mixed with synthetic fibers sent through the second feed path 35.

[0044] mixed fibers consisting of pulp fibers and synthetic fibers is fed the supply casing 39 as a product opening machine 40, is fiber stacking the product 繊用 rotary drum 42 is formed in a mat shape.

[0045] In the absorbent body production apparatus 30, once a synthetic fiber defibrating, savings distillation City quantitative feeder one 34, with feed Kyusuru cut quantitative Dzu', feed rate provided in the second feed path 35 synthetic fibers by performing opening control of the adjustment damper 37 is capable of accurately adjust to the desired feed rate, good accuracy and synthetic fibers and pulp fibers at a mixing ratio as designed KuKatsu it is possible to efficiently manufacture.

[0046] Meanwhile, the second fiberizer 38 from the transport path 及 beauty product opening machine 40 product 繊用 rotary drum 42 near Niore supply casing 39 leading to the product opening machine 40 Te, and pulp and synthetic fibers are by the mass difference, larger pulp fibers relative mass is being fiber stacking reached Seki繊用 rotary drum 42 effectively ride on the air current, small synthetic fibers having a relatively mass deviates partially from the airflow together intends Kochikara the annular casing 39a side to cover the product 繊用 rotating drum 42, in some cases been made be attached deposited on the wall surface of the over time the annular casing 39a. Therefore, it has been a cause of variations in the mixing ratio between the pulp fibers and synthetic fibers.

[0047] As a first method for solving the above problems, as shown in FIG. 7, in the transport path of the supply casing 39 extending from the second fiberizer 38 to the product opening machine 40, the casing width (plane width ) reduced up to 100 to 300% relative to the product 繊幅 (absorption-forming recess 42a width) Unisuru. Generally, although the casing width (casing plane width) is roughly about 400% relative to the product 繊幅 (concave portion 42a wide absorbent body forming), the casing bandwidth product 繊幅 (absorber forming shape recess 42a 100-300% relative to the width), preferably increasing the air velocity through the child reduced to 100 to 200%, induced before the separation of the pulp fibers and synthetic fibers takes place until the product 繊用 rotary drum 42 product it is possible to fiber.

[0048] As the second method, as shown in FIG. 8, the fiber stacking apparatus 40 site near the bottom side wall of the supply housing 39, annular casing 39a side direction covering the product 繊用 rotary drum 42, ie the curving the conveying side direction of the product 繊用 rotary drum 42, the inclined direction forces the pulp fibers and synthetic fibers with respect to the product 繊用 rotating drum 42, so as to al fiber stacking. In this case, the product 繊用 rotary drum 42 near the pulp fibers with synthetic fibers riding the airflow, by changing the conveyance direction, is prevented separation of the pulp fibers and synthetic fibers, the product 繊用 rotation will be fiber stacking is guided to the drum 42.

[0049] As the third method, as shown in FIG. 6, the second of the fiberizer 38 is provided with a damper 38b for air introducing force this air introduction damper 38b is fully closed, the casing with increasing negative pressure in 39, the opening of the feeding amount adjusting damper 37 increases correspondingly, it is possible to prevent the separation of the synthetic fibers by increasing the flow rate of the synthetic fibers in the quantitative feeder one 34 or later it can.

[0050] [embossed structure]

In this sanitary napkin 1, as in detail shown in Figure 9, which has a domed section 6 of the high absorption body for use surface side in the widthwise central portion, so as to surround the domed section 6, Na Pukin elongated embossing 8 is formed in one longitudinal direction. The embossed 8, the front side force turn, the front end emboss 8a, reduced profile emboss 8b, a first bulging shape emboss 8c, the intermediate arcuate emboss 8d, a second bulging shape emboss 8e, composed from the rear side emboss 8f It is. Each of these embossed are continuously formed without cutting, and closing in the circumferential direction as a whole.

[0051] The front end emboss 8a is a embossment formed in a substantially semicircular shape, Oite each pair of embossments substantially along the longitudinal direction are respectively formed on both sides of the domed portion 6 on a napkin front end it is embossed which bind with curve line.

[0052] The reduced profile emboss 8b is on both sides of the domed portion 6 continuously with the front end emboss 8a, Ri formed a pair of left and right emboss lines der to extend in the longitudinal direction of the napkin 1, approximately atmospheric together positioned on the front side of the thigh, to form a reduced area of ​​如 instrument embossed spaced width illustrated, each on both sides of the embossed lines, it is formed by a curve having a curvature in the cardiac outward side of the napkin 1 .

[0053] The first bulging shape emboss 8c, the reduced profile emboss 8b to continuously on both sides of the domed portion 6, formed a pair of left and right so as to extend generally longitudinally of the napkin 1 E down Bosurain , and the addition to the position on the rear side of the almost thigh, so as to form an enlarged area of ​​the emboss spacing width, on both sides of the embossed lines, respectively, are formed by a curve having a center of curvature on the center side of the napkin 1 there. [0054] The intermediate arcuate emboss 8d, the first bulging shape emboss 8c to continuously on both sides of the domed portion 6, formed a pair of left and right so as to extend generally longitudinally of the napkin 1 E down Bosurain , and the like in detail shown in FIG. 10, as the boundary of the inflection point position of the center of curvature is inverted, respectively on both sides of the embossed lines, very short by a curve having a center of curvature on the outer side of the napkin 1 It is formed in the interval.

[0055] The second bulging shape emboss 8e, the intermediate arcuate emboss 8d to continuously on both sides of the domed portion 6, formed a pair of left and right so as to extend generally longitudinally of the napkin 1 E down Bosurain , and the like in detail shown in FIG. 10, as the boundary of the inflection point position of the center of curvature is inverted, both sides of the embossed lines, respectively, are formed by a curve having a center of curvature on the center side of the napkin 1 there. When the second bulging shape emboss 8e compares said first bulging shape emboss 8c, and is formed in a relatively short section width.

[0056] the rear side emboss 8f is on both sides of the domed portion 6 continuously to the second bulging shape emboss 8e, in the formed pair of Enbo Surain to extend generally longitudinally of the napkin 1 There is extended at the rear side or to narrow gradually the separation width of only increments embossed in the illustrated embodiment, both sides of the embossed are joined by an arc-shaped curve embossed at the rear side. The intermediate position of the rear side toward the rear side emboss 8f, so as to form an enlarged region emboss spacing width, a third bulge-shaped embossing by curves each embossment having a center of curvature on the center side of the napkin 1 8g is formed.

[0057] outside of the rear side emboss 8f, the second rear side emboss 10, 10 extending in the longitudinal direction of the napkin 1 and spaced between the rear side emboss 8f is formed. Rear side emboss 10 The second in the illustrated example is the arc-shaped curve having a center of curvature outside the napkin 1 respectively.

[0058] Further, on the front side of the front end emboss 8a, with the front end independent Enbo scan 9 of substantially umbrella shape is formed at between, on the rear side of the rear side emboss 8f is opened between rear independent emboss 11 of a substantially inverted umbrella shape is formed.

[0059] above formed by various embossed 8: According to 11, the following effects can be obtained.

[0060] First, the first bulging shape emboss 8c, in the formation region of the intermediate arcuate emboss 8d and the second bulged shape emboss 8e, as in detail shown in FIG. 10, each bulge shaped Jo embossing 8c, 8e region formation is forced by the embossing line bulging outwardly and has a folding bend hard region of the napkin width direction line as flexible shaft (line) these bulging out shape emboss 8c, sandwiched 8e the reason the intermediate arcuate emboss 8d is an area where embossed curve is inverted, since the respective bulged shape emboss 8c, restraining force of the distortion of 8e is opened, allowed the line X -X of relatively napkin width direction It is easy Ri songs force S fold as Shiwajiku

1 1

One is that.

[0061] On the other hand, as the napkin 1 is shown in Figure 14, when mounted on the shorts 30, the reduced shape emboss 8b, in the region of the first bulging shape emboss 8c, the inner Direction from the thigh together will experience a compressive force toward the same time when the compression force is compressed absorbent member 4 in the width direction, the force is transmitted by the embossed 8 formed along the napkin longitudinally, front side and rear by acting force Fl, F2 acts toward the respective inner side to side Uninaru. Furthermore, the crotch portion of the shorts 30 is to receive a pressing force that presses the crotch portion along the longitudinal center line Y- Y in Na Pukin 1 by being pulled to the body side.

By receiving the [0062] above-mentioned acting forces, in the Z region, the first raised portion R is formed in the first protruding shape emboss 8c portion corresponding to Haichiguchi, the ridges R

1 1 can absorb menstrual blood or the like by adhesion around Haichiro. Further, the second bulging shape emboss 8e site corresponding to perineal toward anus of the rear rectangular side from the vaginal opening is a via an intermediate arcuate emboss 8d which X -X flexible shaft is formed 2 It is a raised portion R

Is 1 1 2 form, inside this can be absorbed in the vicinity Haichiro by the raised portions R comes into close contact with the perineum

2

Reliably absorb ivy menstrual blood or the like, ing to the run down leakage to the rear side of the body fluid can be reliably prevented.

[0063] That is, as shown in FIG. 10 (B), with an intermediate arcuate emboss 8d region distortion of the raised direction is opened, for the X -X flexible shaft, a first located before and after Rise of

1 1

Out shape emboss 8c region, and the second bulged shape emboss 8e area as continuous two peaks, ridges R, now R is formed, contact the ridge R is in the vicinity Haichiro tooth

1 2 1

The run down leakage of menstrual blood or the like by the ridge R is brought into close contact around the perineal area by reliably prevented

2

Kill as to become. Incidentally, the raised portion R is in proportion to the formation scale of bulging shape emboss 8e, is formed smaller than the raised portion.

[0064] On the other hand, in the rear side emboss 8f region, respectively on either side of the domed section 6, in addition to the said rear side emboss 8f along the longitudinal direction of the napkin 1, the second rear side emboss 10 is made form these four Article embossments for forming a respective flexible shaft, in the direction along the X -X

twenty two

Scull only property is improved, so that fit with respect to the valley portion of the hip increases.

[0065] Furthermore, a third swelled shape E down boss 8g formed at the rear side near the position of the rear side emboss 8f is transverse lines X _X corresponding to the inflection point position, X -X at each position broken

3 3 4 4

Together are liable summer to bend, since the distortion of the longitudinal line Y_Y direction of the napkin at each inflection point position is divided, made to fit in the valleys of the hip as region ζ bulges

2

[0066] On the other hand, the front end independent emboss 9 of the substantially umbrella-like formed on the outermost front napkin 1, which is easily bent front end portion of the napkin 1 becomes flexible shaft, also formed on the rear side rear end independent emboss 11 of the substantially Gyakukasa shape, which is easily bent a second © queuing shaped flaps W, W for the left and right become a flexible shaft.

BB

[0067] Incidentally, in the napkin 1, Haichiro position as generally shown in the wing flaps W, W-position force for example FIG. 11 are those defined as the corresponding part location, reduced profile embossed 8b of the embossed 8 as area is positioned to correspond to the wing flaps W, W, various emboss 8: 11 may be formed by shifting relatively lower.

[0068] [Other embodiments]

(1) and the first bulge shape emboss 8c region, for facilitating bending of the napkin 1 at the flexible axis X-X position formed between the second protruding shape emboss 8e region of the napkin 1

1 1

An auxiliary embossing along the substantially transverse direction may be applied. Figure 12 (A) as the auxiliary E down bosses, Ri example der forming the arcuate embossed 14 oriented in the widthwise direction central portion in the width direction, and FIG. 12 (B) is a width direction so as to connect both sides of the embossed in an example of forming an arcuate emboss 15.

(2) In the above embodiment, the second is the rear side emboss 10, 10 and each independently formed, as shown in FIG. 1 2 (C), and after the second rear side emboss 10, 10 of an end independent emboss 11 is continuously, may be formed a substantially transverse U-shaped continuous embossing 16. (3) Further, as shown in FIG. 13, the surface of the domed portion 6 of region Y including the region Y and the third swelled shape emboss 8g containing region perineum corresponding site comprising Haiti sites, small

twenty three

By forming a large number of ... recess shaped Dodd embossing 18.18, it is desirable to improve the absorption of menstrual blood. In the example of the drawing, adjacent the position of the flexible shaft X -X, and third

1 1

For each of the protruding shape emboss 8g site, to form an arcuate emboss 14, 17 oriented in the width direction in the central portion in the width direction.

(4) In the above embodiment, the emboss 8 is a pair of left and right emboss lines are joined at the front end and the rear end portion of the napkin, but forms a whole closure shape, front end portions a pair of left and right emboss lines and Z or it may be formed in a manner that does not bind in a rear end portion.

Example

[0069] The synthetic fiber mixture ratio of the upper layer absorbent body 4A to produce an absorbent body sample was varied was performed absorb rate test and the liquid permeability test. Incidentally, using the core-sheath type composite fibers of PE / PET was hydrophilized in the upper absorbent body 4A, the lower absorbent body 4B synthetic fibers and an absorbent layer made of pulp fibers and superabsorbent polymer contains no.

[0070] The absorption rate test, a state in which Keichiryou particularly many people wears 1 hour napkin with virtual constant, the liquid-permeable top sheet surface, every 5 minutes 8. artificial menstrual blood 3. 5 cc It was absorbed speed with the seventh absorption rate when imbibed seven times (3 time until the artificial menstrual blood of 5cc is absorbed Te base not) to. Further, the liquid permeability test in advance by measuring the weight of the upper layer absorbent body and the lower absorbent body, after dropping the artificial menstrual blood 3. 5 cc in the upper layer absorbent body, left for 5 minutes, the upper layer absorbent body and the lower absorbent body weight again measured, and was calculated from the artificial menstrual blood volume penetrated into the lower absorbent body. The test results together shown in Table 1 below, shown in Figure 15.

[0071] [Table 1] Synthetic fibers mixing ratio (%) absorption rate (S) liquid permeability (%)

0 14.02 77.50

10 12.58 80.07

30 20.70 88.71

50 23. As shown in 41 89.05 [0072] Figure 15, to prevent securely leakage after Keichiryou particularly many people wears the 1 hour napkin, the liquid transmittance of 85% or more, since the absorption rate is desirable not more than 25 seconds, the mixing ratio is 20-80% of the synthetic fibers, preferably good that a 40% to 60% Re, it has been found.

BRIEF DESCRIPTION OF THE DRAWINGS

[0073] FIG. 1 is a development view of the sanitary napkin 1 of the present invention.

Is a [2] beside sectional view (II II view taken along line of FIG. 1).

A [3] beside sectional view (III III taken along line of FIG. 1).

[Figure 4] stacked structure of the upper absorbent body 4A and the lower layer absorber 4B is a sectional view showing a (first).

[5] stacked structure of the upper absorbent body 4A and the lower layer absorber 4B is a sectional view showing a (second).

6 is a longitudinal sectional view showing an absorbent body manufacturing apparatus 30.

7 is a plan view showing the shape modification of the casing 30.

8 is a side view showing the shape modification of the casing 30.

[9] Embossed 8: 11 is an explanatory view of.

[FIG. 10] (A) is an enlarged view of the essential part, (B) is a BB sectional view taken along line diagram.

11 is a development view of the sanitary napkin 1 which is shifted to the lower position of the embossing 8-11.

[FIG. 12] (A) ~ (C) are diagrams each showing a modification of the embossing.

13 is a development view showing the formation of the other embossing.

14 is a perspective view showing a mounting state of the napkin.

It is a graph showing the test results in FIG. 15 embodiment.

Is a cross-sectional view showing the FIG. 16 conventional absorbent laminated structure.

DESCRIPTION OF SYMBOLS

[0074] 1 ... sanitary napkin, 2 ... liquid impermeable back sheet, 3 ... liquid permeable top sheet, 4 ... absorbent body, 4A ... upper absorbent body, 4B ... lower absorbent body, 5 ... crepe paper, 6 ... domed section, 7 ... side nonwoven fabric, 8 ... embossed, 8a ... front end emboss, 8b ... reduced profile embossed, 8c ... first Rise out shape embossing, 8d ... intermediate arcuate emboss, 8e ... second bulging shape embossing, 8f ... rear side emboss, 8 g ... third bulging shape embossing, 9 ... front end independent emboss, 10 ... second rear side emboss, 11 ... rear end independent emboss, BS ... standing gathers, W ... wing-shaped flaps , W ... buttocks side wing-like flaps, 14 ... pulp fiber sheet, 15 ... veil-like synthetic fibers,

B

30 ... absorbent body manufacturing apparatus, 31 ... first fiberizer, 32 ... first feed path, 33 ... feed fan 34: quantitative feeder primary, 35 ... second feed path, 36 ... feed fan, 37 ... feeding amount adjusting damper primary, 38 ... second fiberizer, 38b ... air introduction damper, 39 ... supply casing 40, - - the product opening machine, 41 ... transfer drum 42 ... product 繊用 rotary drum, 42a ... absorptive molded recess, 43 ... - the suction chamber, 44 ... polymer inlet

Claims

The scope of the claims
[1] with the absorber between the liquid-permeable topsheet and the backsheet is interposed, the absorber in the absorbent article is a laminated structure of the upper layer absorbent body and the lower absorbent body,
Together with the upper layer absorbent body comprising at least pulp fibers and synthetic fibers, said pulp fibers: the ratio of the synthetic fiber by weight is 80 to 20: and 20 to 80,
Wherein the upper layer absorbent body and the lower layer absorbent body are laminated without using an adhesive, characterized tare Rukoto grant embossed toward the top and / or peripheral outside of the upper layer absorbent body to the lower absorbent body direction the absorbent article.
[2] The absorbent article of claim 1, wherein said body fluid permeability in the upper layer absorbent body is 85% or more.
[3] in the liquid-pervious top sheet surface, one of claims 1, 2 seventh absorption rate when allowed to 8. absorbed seven times every 5 minutes artificial menstrual blood 3. 5 cc is less than 25 seconds the absorbent article of crab described.
[4] the upper layer absorbent body and the lower absorbent body is enclosed by crepe paper, the upper surface of the lower surface and / or the lower layer absorbent body at least the upper layer absorbent body, any claims 1-3 in which an opening is formed in the crepe paper the absorbent article of crab described.
[5] In a state in which a laminate of the upper layer absorbent body and the lower layer absorbent body, the absorbent article according to any one of claims 1 to 3 that is surrounded these upper layer absorbent body and the lower absorbent body in crepe paper.
PCT/JP2006/311818 2005-06-14 2006-06-13 Absorbent article WO2006134906A1 (en)

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JP2005-174173 2005-06-14
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