WO2007049725A1 - Absorbable article - Google Patents

Absorbable article Download PDF

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Publication number
WO2007049725A1
WO2007049725A1 PCT/JP2006/321431 JP2006321431W WO2007049725A1 WO 2007049725 A1 WO2007049725 A1 WO 2007049725A1 JP 2006321431 W JP2006321431 W JP 2006321431W WO 2007049725 A1 WO2007049725 A1 WO 2007049725A1
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WO
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Application
Patent type
Prior art keywords
absorbent
sheet
portion
polymer particles
filament
Prior art date
Application number
PCT/JP2006/321431
Other languages
French (fr)
Japanese (ja)
Inventor
Yumiko Seike
Akinori Fukae
Tomotsugu Matsui
Original Assignee
Daio Paper Corporation
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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
    • A61F13/4704Sanitary towels, incontinence pads or napkins having preferential bending zones, e.g. fold lines or grooves
    • 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
    • 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
    • A61F13/49Absorbent articles specially adapted to be worn around the waist, e.g. diapers
    • A61F13/49001Absorbent articles specially adapted to be worn around the waist, e.g. diapers having preferential bending zones, e.g. fold lines or grooves
    • 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
    • A61F13/53Absorbent 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
    • A61F13/531Absorbent 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
    • A61F13/532Absorbent 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
    • A61F13/533Absorbent 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

Abstract

[PROBLEMS] To improve the shape stability of a filament assembly and increase the fitting properties to the skin of a wearer. [MEANS FOR SOLVING PROBLEMS] In an area where an absorber (56) having an assembly of filaments is placed, a groovy emboss (Em) is formed along approximately a lengthwise direction on at least both sides of a crotch of a wearer. The emboss (Em) extends from a top sheet (30) and reaches the absorber (56).

Description

Specification

The absorbent article

Technical field

[0001] The present invention relates to absorbent comprising an absorbent body which is formed by the absorbent absorbent article grooved embossing is formed to reach the body, the filament aggregate comprising especially opening a tow from the topsheet the article, preferably relates to disposable diapers. Further, the present invention relates to a manufacturing method of an absorbent article and absorbent.

BACKGROUND

[0002] The infants and adults taped or pants type disposable diaper, the intake Osamusei articles such as sanitary napkins, and the topsheet use surface side, a backsheet which prevents the transmission of the back side of the liquid, these is interposed between the sheets, and an absorbent body receiving and holding liquid excreted has passed through the top sheet as a basic element, Ru.

[0003] with respect to the basic element, provided with outer sheet over bets becomes a force such as the back side, for example nonwoven Roh Kkushito, form in which improvements the skin in the case of using a plastic sheet as Bruno Kkushito, called Bruno on both sides of the product such as in the form of forming a Riyakafusu, such as in the form of imparting elastic stretchability to improve the fit around the waist and around the belly is Caro with appropriately.

[0004] The topsheet use surface side as an absorber for receiving and holding the transmitted liquid, conventionally, Norupu short fibers stacks are commonly used. In addition, (also referred to as "SAP", cormorant.) High-absorbent polymer particles in order to increase the absorption amount of the liquid also known to use the! /, Ru.

[0005] SAP is sometimes pulp short fibers Ho force when sprayed on the stacks of causes stacks dispersed retain SAP pulp short fibers (Patent Document 1).

[0006] Meanwhile, in recent years, JP-T 2002- No. 524399 (W099Z27879: Patent Document 2) and Japanese Table 2004- No. 500,165 (U.S. Patent No. 6, 646, 180 Patent: Patent Document 3) as shown in, cellulose It is proposed to use a tow of acetate as an absorber, Ru. In this absorbent element, the filaments constituting the tow along the longitudinal direction, and Mashimashi end until in extending around the absorbent element. [0007] JP-T 2004- No. 500,165 discloses an absorbent body in which 添Ka卩 the filament aggregates mainly of SAP. The absorber is provided between the upper and lower layers, it viewed including the SAP about 50-95 wt%, from water-insoluble hydrophilic polymer and absorption Osamuso comprises about 5 to 50% by weight of fibers such as starch is of a laminate structure comprising, folded it in cross-section C-type, and forming a Chiya tunnel in the middle.

Patent Document 1: JP 2004- 65300 JP

Patent Document 2: JP-T 2000- No. 524399 (W099 / 27879) publication

Patent Document 3: JP-T 2004- No. 500,165 (U.S. Patent No. 6, 646, 180 Patent) Publication

Disclosure of the Invention

Problems that the Invention is to you'll solve

[0008] The tow because of insufficient density is relatively Kogu intact absorption performance and softness, requiring open fiber.

While [0009] to force filament aggregate formed by opening a tow, unlike general-purpose flocculent pulp, is weak ties filaments mutually collapsed shape by an external force applied during use, an initial absorbing performance there may not be exhibited.

[0010] In particular, in the mounting or during after installation, when the external force is applied, tend to filament cross leaves, density occurs relates width direction of the absorber, tends to fit deteriorates to the wearer's skin been found It was. Reduction of the fit to the wearer's skin, resulting in a trend that excreted liquid remains in the top sheet remains not promptly penetrate into the absorber, a liquid to remain in the top sheet, and spread the door Ppushito, of the skin cause of wet and rash.

[0011] In addition, when orienting the filament assembly in the longitudinal direction of the absorbent element (product), excessively flows (run) in the direction of orientation of the absorbed hydraulically filaments tendency was observed, intersecting the Oriented direction of the filaments it shall hardly diffused in the direction of, limits are found to increase the absorption capacity as a whole.

[0012] Further, as the tow of the cellulose acetate, it is absorbent element itself water absorption is hardly flame absorption off Iramento using filament assemblies assembled in a bundle, the liquid along the continuing direction of the filaments spread If both ends of and Ekigu filament extends to the periphery of the absorbent element, leakage had a child generated due to a large amount of liquid on the end portion is supplied quickly.

[0013] Furthermore, since the conventionally contained evenly superabsorbent polymer particles throughout the absorber, the superabsorbent polymer particles to absorb the excreted liquid in the crotch portion, uniformly crotch portion in the width direction expanded, there is a problem that exacerbates the feeling of wearing. In particular, the absorbent article, in order to prevent the so-called side leakage from the leg, on either side of the top sheet, but often those with Roh Riyakafusu erected to use surface side, apply in this absorbent article When both sides of the crotch portion is inflated have decreased substantial standing height Roh Riyakafusu, also decreases following performance to the body surface Nag only reduced simply blocking amount.

[0014] Accordingly, a first object of the present invention improves the shape stability of the filament assembly, is to improve the fitness to the wearer's skin. The second problem is to so as to absorb liquid quickly absorbed body while supplying the liquid along the groove of the embossing. Further, a third object is to prevent leakage due to over-supply of liquid for the edges of the absorbent element. The fourth problem is uniformly expanded in the width direction of the crotch portion, it is to solve the problems which Akui匕 the wearing comfort. Other problems will become apparent from the following description.

Means for Solving the Problems

[0015] The present invention which solves the above problems are as follows Symbol.

[0016] <invention of claim 1, wherein>

A liquid-pervious topsheet, tow Te Contact absorbent body containing the formed absorber by a filament aggregate formed by opening, the liquid impervious sheet in an absorbent article having in this order, and [0017] wherein in the region where the absorbent body is located, and wherein the substantially longitudinal direction along the groove-like embossment from the topsheet reaches the absorber is formed! Ru that on both sides of the crotch portion of at least the wearer the absorbent article to be.

[0018] (Effect and Operation)

In the region where the absorbent body is located, along a substantially longitudinal direction on both sides of the crotch portion of at least the wearer, groove-like embossments reaching from the top sheet to the absorbent body is formed by ヽ Runode, when worn, the embossed portion in the boundary would be embossed between regions are off-it to the crotch of the wearer, excreted liquid reduces the factors before, after, or side leakage spread over the topsheet rapidly penetrate the absorption body It becomes the way.

[0019] Further, since embossing is formed in a form that reaches the absorber, the liquid penetrated into the absorber is such that diffuses along the embossing rate of absorption of the entire absorber can be improved as a result.

[0020] <invention of claim 2, wherein>

The embossing may be formed along a direction intersecting with respect to the orientation direction of the filament aggregates! Absorbent article Ru claim 1.

[0021] (Effect and Operation)

The diffusion rate of the liquid is faster with respect to a direction towards the alignment direction of the filament assemblies intersect therewith. However, embossing and are along connexion formed in a direction crossing to the direction of orientation of the filament assembly, functions as the direction of the embossing of the weir to the crossing, the diffusion in a direction intersecting with respect to the filament assemblies encourage, increases the rate of diffusion of the whole absorber.

[0022] Further, embossed along a direction intersecting with respect to the orientation direction of the filament assembly is made so as to prevent loose of Firame cement mutual ties weak filament aggregate, especially in the embossed using thermal fusion , so that the effect of adhesion of the filament assemblies to prevent high tool loose exerts high ingredients with an external force by the absorption capacity of it is small tool plant essential shape collapses applied during use.

[0023] <invention of claim 3, wherein>

The embossment, and a second portion formed with a first portion formed generally longitudinally on opposite sides of the crotch portion of at least the wearer, the front and rear portions of the absorbent body, said first portion wherein the second portion is connected to the substantially substantially absorbent article of annular emboss is formed V, Ru claim 1 or 2 wherein the.

[0024] (Effect and Operation)

Said first portion and said second portion is connected to substantially the substantially annular embossment is formed, effects of the claims 1 and 2 are synergistically exerted, in particular ring increased absorption rate of at Jo embossing region, and has excellent absorption performance.

[0025] In order to increase the absorption amount of the liquid, it is preferable to hold the superabsorbent polymer particles in the filament assemblies. Superabsorbent polymer particles, unlike in the case of cotton-like pulp, off Iramento or subsequent steps during application to the assembly or in the course of up to consumer use, to move the filament assemblies, filament assemblies or unevenly distributed, which may or fall out even Firame cement set physical strength. When these events occur, or the absorption performance is hindered, because the unevenness of the superabsorbent polymer particles which fall out filament aggregate physical strength, or feel uncomfortable was gritty to the user, which is not preferable. However, by forming the annular E Nbosu, it is possible to suppress the movement of the superabsorbent polymer particles in the filament aggregate to prevent uneven distribution of the superabsorbent polymer particles, improving the diffusion property and absorption speed of urine it is also an advantage that it is possible to prevent gel blocking.

[0026] <invention of claim 4, wherein>

Comprising an absorbent that absorbs the liquid that has passed through the top sheet of the use surface side,

[0027] The absorbent element, and absorption obtained by opening a tow is has a 1.0 times or less of the flame absorbent filament aggregate of its own weight,

[0028] The filament assembly, filaments spaced extends along the top sheet, and the periphery of both ends absorbent element of filament inside,

[0029] The absorbent article, characterized in that.

[0030] (Effect and Operation)

In the present invention, since the both ends of the filaments are spaced inwardly from the periphery of the absorbent element, even the liquid is diffused to both ends along the filament, dispersion can be stopped to expand in front of the periphery of the absorbent element. Therefore, now over the supply of the liquid is suppressed relative to the end of the absorbent element, so the leakage prevention is achieved.

[0031] Note that the absorption of the present invention is measured by the following procedure.

(1) The sample fibers 5. Og weighed, immersed 5 minutes in artificial urine 1L.

(2) Next, the samples were removed from the artificial urine hung 1 minute.

(3) Next, to separate the 6 minutes liquid separation at 2250rpm by using a centrifugal separator.

(4) Next, the weight of the sample is measured, a value obtained by subtracting the fiber weight (5. Og) and absorption.

[0032] <invention of claim 5, wherein>

The absorber, in which wrapped filament assembly at or liquid-permeable sheet is pasted to the liquid-permeable sheet, the absorbent article according to claim 4, wherein.

[0033] (Effect and Operation)

By adopting such a structure, it can be easily produced by the production method of the present invention to be described later.

[0034] <invention of claim 6, wherein>

On both sides of at least the crotch portion, is formed with embossed depressions having a shape longitudinal direction intermediate portion bulges in the width direction center side with extending along the longitudinal direction, the embossed depression use surface side of said topsheet It is formed so as to reach the absorbent body from Ru, claim 4 or 5 absorbent article according.

[0035] (Effect and Operation)

In this case, the working surfaces of the widthwise center is raised than: both sides, it is possible to enhance the Fuitsu bets against crotch Ya gluteal cleft.

[0036] <invention of claim 7, wherein>

Comprising an absorbent that absorbs the liquid that has passed through the top sheet of the use surface side,

[0037] The absorbent element has a lower absorbent body, an upper layer absorber provided on the top sheet side,

[0038] the upper layer absorbent body, and absorption obtained by opening a tow is also 1.0 times or less of the flame absorption filament aggregate strength of its own weight, the filament assembly, filaments along the topsheet It extends Te, and both ends of the filament is between away inwardly from the peripheral edge of the lower absorbent body,

[0039] The absorbent article, characterized in that.

[0040] (Effect and Operation)

In this case, even if the liquid component which is fed to the upper layer absorbent body has reached the ends of the street filaments upper absorbent body, where stops diffusion of the liquid, to the periphery of the absorbent element does not diffuse. And, the liquid component which has diffused into the upper layer absorbent body is to be held shifts to the lower absorbent body. O connexion, become over-supply of the liquid is suppressed relative to the end of the absorbent element, so the leakage prevention is achieved.

[0041] the upper layer absorbent body <invention of claim 8, wherein> is what wrapped filament aggregates in or EkiToru over sheet pasted on the liquid-permeable sheet, the absorbent article according to claim 7, wherein .

[0042] (Effect and Operation)

By adopting such a structure, it can be easily produced by the production method of the present invention to be described later.

[0043] <invention of claim 9, wherein>

The lower layer absorber, those formed by fiber stacking mixing pulp fibers and superabsorbent polymer particles The absorbent article of claim 7 or 8, wherein.

[0044] (Effect and Operation)

Lower absorbent body, since a role for holding the absorbed liquid (storage), is preferred to employ an absorbent having excellent absorption amount of water as given in this section.

[0045] <invention of claim 10, wherein>

The lower layer absorber, those formed by fiber stacking mixed filament aggregates and superabsorbent polymer particles The absorbent article of claim 7 or 8, wherein.

[0046] <invention of claim 11, wherein>

Comprising an absorbent that absorbs the liquid that has passed through the top sheet of the use surface side,

[0047] The absorbent element has a lower absorbent body, an upper layer absorber provided on the top sheet side,

[0048] the lower layer absorber, and absorption is obtained by opening a tow is also 1.0 times or less of the flame absorption filament aggregate strength of its own weight, the filament assembly, filaments along the topsheet It extends Te, and both ends of the filament is between away inwardly from the peripheral edge of the upper layer absorbent body,

[0049] The absorbent article, characterized in that.

[0050] <invention of claim 12, wherein>

On both sides of at least the crotch portion, is formed with embossed depressions having a shape longitudinal direction intermediate portion bulges in the width direction center side with extending along the longitudinal direction, the embossed depression use surface side of said topsheet It is formed so as to reach the upper layer absorbent body from claims 7: the absorbent article of any one of L 1. [0051] (Effect and Operation)

In this case, the working surfaces of the widthwise center is raised than: both sides, it is possible to enhance the Fuitsu bets against crotch Ya gluteal cleft.

[0052] <invention of claim 13, wherein>

And absorption obtained by opening the the 1.0 times or less of the flame absorption filament aggregate of its own weight tow, after wrapped with or liquid-permeable sheet is pasted to the liquid-permeable sheet, continuous direction of the filaments manufacturing method of the absorbent body is cut at a predetermined interval, the cut filament aggregate, pasted on a predetermined position on the absorber or absorption sheet over preparative, characterized in that the.

[0053] (Effect and Operation)

Filament assembly obtained by opening a tow is becoming rough or, because was easily or cause their shape, are difficult materials to handle in manufacturing. Therefore, the Te manufacture smell of the conventional absorber handling a filament aggregate remains continuous shape, by utilizing the cut to individual absorber has been performed also cutting of the filament assemblies.

[0054] However, in such a manufacturing method, it is impossible to both ends of the filament are produced by absorbing body extending force to the periphery of the absorbent element, it is impossible to avoid the leakage problem as described above . Therefore, the development of manufacturing techniques which can be arranged a collection of the filaments to the desired position of the absorption body has been desired.

[0055] invention given in this section are those made in view of such problems. In the present invention, prior to cutting, to put a continuous filament aggregate, for wrapping a continuous-like liquid to or Keru paste permeable sheet or the liquid-permeable sheet, filament assemblies or becoming rough, their shape It is difficult to or. Also with respect to the filament assembly which is integrated with the sheet, it is possible to use a machining apparatus for sheets such as slip power Potter, desired a collection of filament absorption body without requiring special equipment so it can be placed in position.

[0056] <invention of claim 14, wherein>

Comprising an absorbent element for receiving and holding the liquid which has passed through the top sheet of the use surface side,

[0057] The absorbent element comprises an absorber having an aggregate and superabsorbent polymer particles of the filaments opening a tow,

The absorbent body includes a crotch portion, Propelled by one of the front portion and rear portion of the crotch portion of the crotch portion, and has a high-absorbent polymer particles in the main absorbent portion is a portion other than the both side portions of the crotch portion , the basis weight of the superabsorbent polymer particles in both sides of the crotch portion is smaller than the main absorbent portion minutes,

Absorbent article, characterized in that.

[0058] (Effect and Operation)

In the absorber of the present invention have a high absorbent polymer particles in the main absorbent portion is a portion other than the both side portions of the crotch portion, while ensuring the absorption at the main absorbent portion, at both sides of the crotch portion the basis weight of the superabsorbent polymer particles constitute less than the main absorbent portion, and suppresses the expansion in the both side portions of the absorbent during Nio, Te crotch portion of the liquid waste. This ensures that the absorption time of Nio of liquid waste, ing as both sides of the crotch portion to fit the flexible legs around Te.

[0059] <invention of claim 15, wherein>

The absorbent article of which the superabsorbent polymer particles are adhered to the aggregate of the filaments by an adhesive, according to claim 14, wherein.

[0060] (Effect and Operation)

As mentioned above, the present invention is characterized in that different basis weight of superabsorbent poly mer particles between the side portions and the other portion of the crotch portion. Therefore, the high-absorbent polymer one grain will move freely, there is a possibility that weakens the effect of the invention described above. Cowpea Te is preferred arbitrarily for bonding superabsorbent polymer particles as in this section according to the filament assembly.

[0061] <invention of claim 16, wherein>

The absorbent element is provided with a covering sheet that wraps the absorbent body, wherein the superabsorbent polymer one grain is adhered to the covering sheet with an adhesive, Ru, absorbent article according to claim 14 or 15 wherein.

[0062] (Effect and Operation)

In many absorbent articles, Wa filament aggregate les, to prevent deformation or the purpose of enhancing the integrity of the FILLER instrument assembly and superabsorbent polymer particles, the absorbent tee Tsu tissue paper (crepe paper) follicle preferred wrap in the sheet member in this case equal to adhere the superabsorbent polymer particles as Honkoki placing the covering sheet, not the preferred to suppress the movement.

[0063] <The invention according to claim 17>

And a holding sheet for holding the high-absorbent polymer particles, the absorbent article according to any one of claims 14 to 16.

[0064] (Effect and Operation)

As means for suppressing the movement of the superabsorbent polymer, other adhesive mentioned above, it is also possible to employ a retention sheet as given in this section.

[0065] <invention of claim 18, wherein>

The superabsorbent polymer particles are adhered to the holding sheet by the adhesive, the absorbent article according to claim 17.

[0066] (Effect and Operation)

When using the holding sheet, by adhering to the holding sheet superabsorbent polymers, can be suppressed more movement of effective high-absorbent polymer particles.

[0067] <invention of claim 19, wherein>

And a holding sheet having a holding hole of the high-absorbent polymer particles, Ru, absorbent article according to any one of claims 14 to 18.

[0068] (Effect and Operation)

Equipped with a holding sheet having such a holding hole! /, The Ru, by the superabsorbent polymer particles are trapped in the hold hole, movement is prevented. Incidentally, the term "holding hole", such depend on the shape of the sheet itself, such as depression holes and fiber void of force nonwoven fabric contains at least one through-hole, I Do include those, which means (the same applies hereinafter) .

[0069] <invention of claim 20, wherein>

It includes only the holding sheet in a portion overlapping the main absorbent portion, the absorbent article according to claim 19, wherein.

[0070] (Effect and Operation)

As given in this section, the holding sheet having a holding hole that to place only the portion that overlaps the main absorbent portion, can be efficiently suppress the movement of the superabsorbent polymer particles to the crotch portion on both sides from the main absorbent portion.

[0071] <invention of claim 21, wherein>

On the back side of the absorbent body, the holding hole of the high-absorbent polymer particles and a retention sheet having only a portion overlapping the main absorbent portion, the absorbent according to any one of claims 14 to 18 articles.

[0072] (Effect and Operation)

As given in this section, the holding hole is also that takes part only set that overlaps with the main absorbent portion of the retaining sheet, can be efficiently suppress the movement of the superabsorbent polymer particles in the main absorbent portion force crotch portion on both sides.

[0073] <invention of claim 22, wherein>

The absorbent article of which the superabsorbent polymer adhesive for bonding has only been distribution in said main absorbent portion, claim 15, 16 or 18, wherein.

[0074] (Effect and Operation)

When the adhesive as given in this section are disposed, the main absorbent portion adhesive for adhering superabsorbent polymer particles Nag only the movement of the high absorption Osamusei polymer particles to the crotch portion on both sides can be efficiently suppressed from agents by the absence both sides crotch portion, can suppress the rigidity increase pressure in the crotch portion on both sides, while suppressing the adhesion of the movement of the superabsorbent polymer particles, fit adversely I spoon article definitive when worn, particularly since preferred,.

Effect of the invention

[0075] or more as, according to the present invention, the absorbent body, especially to the upper direction of the shape stability of the filament assemblies, it is possible to improve the fitness to the wearer's skin, the liquid along the groove of the embossed the advantage of such can be made to absorb liquid quickly absorbed body while supplying it is al have.

[0076] Further, according to the present invention, over-supply of the liquid is suppressed against the edge of the absorbent element, being hit advantage force such leakage prevention is achieved.

[0077] Furthermore, according to the present invention, fit for uniformly expanding it forces S Nag in the crotch portion in the width direction of the absorber results in advantages such as hardly adversely spoon.

BEST MODE FOR CARRYING OUT THE INVENTION [0078] Hereinafter, will be described separately first to third embodiments, a portion of the range Nioiteizu Re embodiments of the present invention constitutes the other it goes without saying that can be applied to the embodiment.

[0079] <First Embodiment regarding the invention of claim 1, wherein>

(Pants-type use, examples of discarded diapers)

1 shows an example of a pants-type disposable diaper is shown as an absorbent article. This path N'type disposable diaper 10 includes an absorbent body 20 of the outer surface (back surface) side of the outer sheet 12 and the inner surface (surface) side, the absorbent body 20 is fixed to the outer sheet 12. The absorbent body 2 0 (in the sanitary napkin described below menstrual blood) liquid such as urine or loose passage is a portion for holding absorbed receiving the. The outer sheet 12 is a part for attachment to the wearer.

[0080] outer sheet 12 becomes a hourglass shape as shown for example, both sides have constricted here is the site to put the wearer's legs. Although the absorbent body 20 may take any shape, a rectangle in the illustrated arrangement.

[0081] outer sheet 12, as shown in FIG. 2, after the absorbent body 20 is fixed which is provided at a predetermined position, is folded back and forth, both sides of the front body 12F and a back body 12B of the exterior sheet 12 junction region 12A of is bonded by thermal fusion. Yotsute thereto, the structure shown in FIG. 1, a pants-type disposable diaper having a waist opening WO and a pair of spreader openings LO is obtained.

[0082] intermediate of the width of the longitudinal direction of the illustrated absorbent body 20 (i.e. also in the vertical direction. Longitudinal direction of the product of Figure 2.), The shorter form than the width connecting the constricted portion of the outer sheet 12 is shown ing. The relationship between the width may be reversed, or the same width.

[0083] outer sheet 12 preferably consists of two sheets, for example, water-repellent nonwoven fabric, with intervening resilient and elastic members between these sheets, forms states to fit the wearer due to the shrinkage force is desirable. As the resilient and elastic members, but a like strip of rubber thread or elastic foam can be used, to use a large number of rubber thread desirable. In the embodiment shown, the rubber thread 12C, 12C ... are continuously provided in the width direction in waist region W, In its your waist area under U provided only on both side portions, provided in the crotch region L Absent. Rubber thread 1 2C, 12C ... is, that are provided on both the waist region W and hip region under U, even contractile force of Itogo arm 12C itself is weak, even wearer in the waist area under U as a whole since the strike, the product is suitable to fit the wearer.

[0084] (absorbent body)

The absorbent body 20 of the embodiment, as shown in FIG. 3, and FIG. 4 showing the state of forming an embossing shown in a state where no emboss applied, the topsheet 30 is also a force such as a nonwoven fabric to transmit liquid When provided with a intermediate sheet (second sheet) 40, and an absorbent element 50 which constitutes a main element of the liquid absorbent. Further, the absorbent element 50 comprises an absorber 56 to absorb 'holds the receiving liquid, the on the back side (also referred to as a backsheet) force becomes liquid impervious sheet such as a plastic sheet 70 is provided. The liquid on the back side of the impermeable sheet 70, the outer sheet 12 is provided. Moreover, a barrier one cuffs 60, 60 on both sides.

[0085] (top sheet)

The topsheet 30 has a property of transmitting liquid. Thus, the topsheet 30 material is sufficient as long as it expresses the liquid-permeable, for example, nonwoven fabric or perforated or non-perforated, and the like can be exemplified porous plastic sheet. Further, these nonwoven fabric, whether the raw material fibers is what is not particularly limited. For example, Orefin, polyester, synthetic fibers polyamide such as polyethylene or polypropylene, rayon Ya regenerated fibers such as cupra, etc. and natural fibers such as cotton, mixed fibers of two or more is used, composite fibers the like may be exemplified. Further 〖This nonwoven fabric may be one which is manufacturing by any processing. The Karoe method, a known method, for example, spun lace method, spun bond method, thermal bond method, melt-blown method, needle punching method, Easu Lou method, can be exemplified point bonding method, or the like. For example, flexibility, as long as obtaining the drapability, span lace method is bulky, as long as obtaining the softness, the Therma Rubondo method forces preferred mosquitoes 卩E method.

[0086] Further, the topsheet 30 may be made of a single sheet, or may be a laminated sheet obtained by combined Ri bonded two or more sheets. Similarly, the topsheet 30, with respect to a flat surface direction, be made of one sheet, it may be composed of two or more sheets.

[0087] (the intermediate sheet) in order to shift to rapidly absorb body liquid having passed through the topsheet 30, require an intermediate sheet 40 which permeation rate of liquid from the topsheet 3 0 are referred to as fast ,, normal "second sheet" it is possible to provide more. The intermediate sheet, sealed proof the "back" phenomenon from the absorber of the absorbed liquid Nag in Chikarari if enhance the absorption performance of the absorber is shifted liquid and to rapidly absorbed body, always a top sheet 30 above it can be dry.

[0088] The intermediate sheet 40, may be exemplified and similar material as the topsheet 30, spunlaced, pulp nonwoven fabric, mixing of the pulp and rayon sheets, a point-bonded or crepe paper. An air-through nonwoven fabric and spunbonded nonwoven fabric especially preferred.

[0089] intermediate sheet (second sheet) 40 is interposed between the topsheet 30 and the covering sheet 58.

[0090] intermediate sheet 40 in the illustrated embodiment, are disposed in the center shorter than the width of the absorbent body 56 may be provided over the entire width. Longitudinal length of the intermediate sheet 40, by any same as the length of the absorbent body 56, and a short centered on the area for receiving the liquid, even within the length range. Typical materials of the intermediate sheet 40 is a nonwoven fabric excellent in transparency of the liquid.

[0091] (absorption element)

Absorbing element 50 includes an absorber 56 for absorbing the receiving liquid 'held, and this absorbent body 56 may be made of cotton-like pulp fiber mosquito ゝ et but, in a preferred embodiment, the tow opening fiber filaments 52, 52, ... of the aggregate having a (filament aggregate) and high-absorbent polymer particles 54, 54, ... is employed, covering sheet for wrapping at least rear face and side surfaces of the absorbent body 56 and a 58. Moreover, the holding sheet 80 is provided between the back side portion of the absorbent body 56 and the covering sheet 58 (the portion of the lower side).

[0092] (absorber)

As described above, the absorbent body 56 has a collection of filaments 52 opening a tow, 52-.... Preferably, as shown in FIG. 3, Maseru containing superabsorbent polymer particles 54, 54, ... in the absorbent body 56. Then, at least in the liquid receiving area, the superabsorbent polymer particles (SAP particles) are substantially dispersed throughout the thickness direction V, it shall is desired for assembly of filaments 52, 52, ...,. The substantially dispersed throughout the thickness direction, conceptually showing situations that the enlarged view of FIG. [0093] upper part of the absorbent body 56, the lower, and if the SAP particles are not, or at very or small quantity even in the middle section can not be said "are dispersed throughout the thickness direction". Thus, "are dispersed throughout the thickness direction", for a set of filaments, other forms of the entire thickness direction are "homogeneously" dispersed, top, and "unevenly distributed at the bottom and or intermediate portion are "force still top, also includes the form dispersed in each part of the lower and middle portions. Also, a set of some of the filaments 52 SAP particles, 52 - ... of not entering into the aggregate and form that residual exist on the surface, part of the SAP particles filament filaments 52, 52, ... and form exits Ri through the body is on covering sheet 58, forms on the holding sheet 80 on there is no intention to be eliminated.

[0094] filament 52, 52, ... aggregates is obtained by spreading the filament tow composed of a (substantially long fibers continuously) (fiber bundle). As the material of the filaments, can be used without particular limitation as long as even as possible heat sealing, for example, polysaccharides or derivatives thereof (cell opening over scan, cellulose ester, chitin, chitosan, etc.), synthetic polymers (polyethylene , polyps propylene, polyamides, polyesters, Borirakutaamido, poly Bulle acetate, etc.), especially the force or the like can be used, cellulose ester and cellulose are preferred.

[0095] The cellulose, cotton, linter, and cellulose and butter Terrier cellulose from plants such as wood pulp can be used, Yogu playback cellulose be regenerated cellulose such as rayon be those spun it may be.

[0096] Suitable employed may cellulose esters such as cellulose acetate, cellulose butyrate, organic acid esters such as cellulose propionate; cellulose § Se Tate propionate, cellulose acetate butyrate, cellulose acetate phthalate, mixed acid esters such as nitric acid cellulose acetate; and cellulose ester derivatives such as and poly force Purorata tons chart Toys spoon cellulose esters. These cellulose esters can be used alone or in combination of two or more kinds. The viscosity average polymerization degree of the cellulose ester, for example, 50 to 900, preferably Ru der about 200-800. The average degree of substitution of cellulose ester, for example, 1.5 to 3.0 (e.g., 2-3) is about.

[0097] The average degree of polymerization of the cellulose ester, for example 10 to 1000, preferably 50 to 900, and preferably, to about 200 to 800 to the al, average degree of substitution of the cellulose ester, for example, about 1 to 3 , preferably 1-2. 15, more preferably to a 1.1 to 2.0 mm. The average degree of substitution of the cellulose ester may be selected from the viewpoint of enhancing the biodegradability.

The [0098] Cellulose esters, organic acid esters (e.g., esters of organic acids of about 2 to 4 carbon atoms) is particularly suitable cellulose acetate. Degree of acetylation of cellulose acetate is often of the order of 43 to 62% is preferable because excellent in especially biodegradable and is about 30-50%. Particularly preferred cellulose esters are Serurosujiase Tate.

[0099] filament, various additives, for example, thermal stabilizers, colorants, oil, yield improving agent, may contain a whiteness improving agent and the like.

[0100] The fineness of the filaments, for example, L~16dex, preferably 1~: LOdex, more preferably l~5dex is desirable. Filaments may be non-crimped fibers but preferably crimped fibers. Wound degree of crimping of the crimped fibers, for example, 5 to 75 per inch, preferably 1 0 to 50, still preferably to 15 to 50 or so. Also, in many cases to use a uniformly crimped fibers. With crimped fibers, with cut with producing bulky and lightweight absorbent, it can be easily manufactured with high integrity tow by entanglement between fibers. Firame cement sectional shape is not particularly limited, for example, circular, elliptical, irregular (e.g., Y-shaped, X-shaped, I-shaped, R-shaped, etc.) be any such or hollow good. Filaments, if example embodiment, 3, 000-1, 000, 000 present, preferably <5, 000-1, 000, form 000 present about tow formed by bundling single textiles (fiber bundle) in is used. Fiber bundles 3, 000-1, 000, preferably configured to focus the 000 present around the filament.

[0101] Deng, because entanglement between filaments is weak, in order to mainly maintain the shape, it is possible to use a binder having an action of bonding or fusing the contact portion of the Firame cement. As the binder, Toriasechin, triethylene glycol diacetate, triethylene glycol dipropionate, dibutyl phthalate, dimethoxy E chill phthalate, other ester-based plasticizers such as Kuen acid tri E chill esters, various 榭脂 adhesives, especially hot it can be used a soluble plastic 榭脂. Particularly preferred to be able to use the Toriasechin. [0102] The thermoplastic 榭脂 used as a binder, the adhesive strength is 榭脂 expressed are water-insoluble or sparingly water-soluble 榭脂, and water-soluble 榭脂 is by melt 'solidified. The water-insoluble or sparingly water-soluble 榭脂 and a water-soluble 榭脂, may be used in combination as needed.

[0103] Examples of the water-insoluble or sparingly water-soluble 榭脂, for example, polyethylene, polypropylene, E styrene propylene copolymer, Orefin system of homopolymers or copolymers such as ethylene acetate Bulle copolymer, polyvinyl acetate Bulle, polymethacrylic acid methyl, methacrylate Mechirua acrylic acid ester copolymer, (meth) acrylic 榭脂 such copolymerizing polymers of acrylic monomer and a styrene monomer, polyvinyl chloride, acetate Bulle Ichishioi匕 Bulle copolymers, polystyrene , styrene emissions based polymers such as copolymers of styrene monomer and (meth) acrylic monomer, modified which may be polyester, nylon 11, nylon 12, nylon 610, a polyamide such as nylon 612, rosin derivatives ( For example, rosin esters), coal hydrogen 榭脂 (e.g., terpenes 榭脂 Dicyclopentadiene 榭脂, petroleum 榭脂), such as hydrogen added hydrocarbon 榭脂 can be used. These thermoplastic 榭脂 may be used singly or in combination.

The [0104] water-soluble 榭脂, various water-soluble polymers, such as poly Bulle alcohol, polyvinyl - having Rupiroridon, poly Bulle ether, and Bulle monomer, a carboxyl group, a sulfonic acid group or their salts water-soluble vinyl 榭 fat and a copolymer of a copolymerizable monomer can be used acrylic-based water-soluble 榭脂, polyalkylene oxide, water soluble polyester, water-soluble polyamide. These water-soluble 榭脂 may be used in combination of two or more kinds together to be able to use alone.

[0105] The thermoplastic 榭脂 include antioxidants, stabilizers such as ultraviolet absorbers, fillers, plasticizers, preservatives, may be added various additives such as fungicides.

[0106] The tow are not detailed it can be manufactured by a known method. Suitably tow bale of cellulose diacetate that can be used in the absorbent element 50, Serra - marketed by such Ichizusha Ya Daicel Chemical Industries. Tow bale of cellulose diacetate, the density is from about 0. 5 gZcm 3, the total weight is 400~600Kg.

[0107] From this bale, peeled off tow is opened to a wide band so as to have a desired size, bulk. Open 繊幅 tow is arbitrary, for example, the width 100 to 2000 mm, preferably to a 100~300mm about the width of the suction absorbent body of the product. Further, by adjusting the fit opening fineness of tow, it is possible to adjust the density of the absorbent body.

[0108] The open 繊方 method of tow, for example, tow passes around a plurality of opening rolls, a method of opening by gradually expanding the width of the tow with the progress of tow tension tow and (elongation) how to spread repeatedly and relaxation (contraction), a method of widening, opening with compressed air can be used.

[0109] (high-absorbent polymer particles)

The high-absorbent polymer particles, is meant to include "powder" in addition to "particles". Particle size of the superabsorbent Po Rimmer particles, those used in the absorbent articles of this kind it is possible to use, 1 00~: ίΟΟΟ / ζ πι , especially 150 to 400 111 Ca those ^ desirability 1ヽ0 as the material of the superabsorbent '14 polymer particles, forces water absorption which can be used without particular limitation is good suitable not less than 60GZg. The high-absorbent polymer particles may be based on starch and cellulose-based and synthetic polymer one system, starch acrylic acid (salt) graft copolymer, starch Aku Lilo - saponified tolyl copolymer, sodium carboxymethylcellulose it can be used, such as cross-linked product, acrylic acid (salt) polymer. The shape of the superabsorbent polymer particles, those conventional granular material like used leaves in the Rukoto be used those forces other shapes are suitable.

The [0110] high-absorbent polymer particles, the water absorption rate is the following 40 seconds preferably used. When the water absorption rate is more than 40 seconds, and the solution that has been supplied to the absorption body is likely to come out to return to the absorption outside the body to generate the fringe cormorants so-called back.

[0111] In addition, as the superabsorbent polymer particles, gel strength more than lOOOPa are needed use suitably. Accordingly, even when a bulky absorbent by using a tow, can be effectively suppressed feeling regarding the base after liquid absorption.

[0112] basis weight of the superabsorbent polymer particles may be suitably determined according to the absorption amount required in applications of the absorber. Therefore not be unconditionally, but can be a 50~350gZm 2. By the basis weight of the polymer and 50 g / m 2 or less, by weight of the polymer, it is possible to prevent the light I spoon effect is "to be exhibited by employing a collection of Toucas made filaments. Beyond 350gZm 2, an excess effect of the superabsorbent polymer particles Nag saturated Surubaryokuri will provide a gritty the discomfort of the foregoing

If [0113] necessary, the high-absorbent polymer particles, had there dispersion density in the planar direction of the absorbent body 56 can be adjusted a spray volume. For example, it is possible to increase the spray volume from the excretion portion other parts of the liquid. When considering gender differences, For man it increases the front dispersion density (amount), is a woman can increase the dispersion density of the central portion (the amount). It is also possible to provide a local (e.g., spots) portion of the polymer is not present in the planar direction of the absorbent body 56.

[0114] If necessary, the high-absorbent polymer particles, and different available particle size distribution, can be sequentially sprayed * projected in the thickness Direction. For example, the superabsorbent polymer sprinkling means and spaced apart plurality line direction, 'after projection, spraying having a large particle size distribution' spraying what particle size distribution is smaller earlier by projection, casting small particle size distribution in the lower inside the absorbent body 56 can be distributed what particle size distribution is large upward. This embodiment is intended the particle size distribution is small, that is effective to penetrate deep into aggregate of the filaments.

[0115] ratio of the high-absorbent polymer particles and the filament aggregates affects the absorption properties. Is a weight ratio in the plane area of ​​5 cm X 5 cm in the region which receives the liquid directly in the absorbent body 56, the high-absorbent polymer particles Z filament weight, 1 to 14, and it is particularly desirable that 3-9.

[0116] (covering sheet)

The covering sheet 58 may be used tissue Bae over Bruno, in particular crepe paper, nonwoven, Porirami nonwoven, a sheet or the like small holes opened. However, it is preferably a sheet of the superabsorbent polymer particles do not appear missing. When using the non-woven fabric instead of crepe paper, hydrophilic SMMS a (spunbond Z meltblown Z meltblown Z spunbond) nonwoven fabric is particularly preferred, the material can be used polypropylene, polyethylene Z polypropylene. Basis weight, 8~20g / m 2, desirably in particular of 10 to 15 g / m 2.

[0117] The covering sheet 58, as shown in FIG. 3, the filament 52, 52, ... of the aggregate and superabsorbent port Rimmer particles 54, 54 ... other forms enveloping the entire layer of, for example, in FIG. 4 as shown, only the back surface and side surfaces of the layer may be one encapsulating. Although not shown, cover forms covering the, underside covering only the upper surface and side surfaces of the absorbent body 56 in the crepe paper Ya nonwoven liquid-impermeable sheet such as polyethylene, the upper surface of the absorber 56 in the crepe paper Ya nonwoven, side and I also such as in the form of covering the lower surface with a liquid impermeable sheet such as polyethylene, (a each of these materials the components of the covering sheet). If necessary, by a layer of filaments 52, 52, ... of the aggregate and the high-absorbent polymer particles 54, 54, ..., even form arranged only in the form and the lower surface sandwiching a sheet of upper and lower layers, but, superabsorbent flame prevents movement of the polymer particles, so desirable, not in the form.

[0118] (liquid-impermeable sheet)

Liquid impervious sheet 70 may simply mean sheet that is disposed on the back side of the absorbent body 56, in the present implementation, it has a sheet to interpose the absorbent body 56 between the topsheet 30 . Accordingly, the liquid-impermeable sheet, the material is not name particularly limited. Specifically, for example, and Orefin system 榭脂 such as polyethylene and polypropylene, laminate non-woven fabric obtained by laminating a nonwoven fabric port triethylene sheets, is interposed a waterproof film substantially nonwoven fabric while ensuring liquid-impervious (in this case may be liquid impervious sheet in the waterproof film and the nonwoven fabric is formed.) to illustrate the like. Of course, the addition to, in recent years, Material having been used by Ru liquid-impervious and moisture-permeable preferred from the viewpoint of stuffiness prevention can also be exemplified. The sheet material having the liquid-impermeable and moisture-permeable, for example, by kneading an inorganic filler in Orefin system 榭脂 such as polyethylene and polypropylene, after forming a sheet, uniaxially or biaxially stretching the microporous sheet obtained by can ί column Shimesuru.

[0119] liquid-impermeable sheet 70 is a so-called forehead extend the use surface in the form of wind-(not shown) that is, in the form of a force implementation can prevent side leakage of the liquid, the side leakage is It is prevented by interposing the second liquid impermeable sheet 7 2 between barrier first sheet 64 of the double forming the Noriyakafusu 60. According to this embodiment, Roh second liquid impervious sheet 72 to the upright of Riyakafusu 60 extends, Runode, diffusion and liquid and barrier Ichiriki laterally transmitted the topsheet 30 Hus 60, 60 between there is also the advantage of preventing the side leakage of loose stools.

[0120] (barrier one force Hus)

Hus barrier Ichiriki provided on both sides of the product 60, 60 prevent urine or loose stool moving laterally transmitted the topsheet 30 above, but are provided to prevent side leakage, with pressurized is the elements.

[0121] The depicted Roh Riyakafusu 60 is obtained by the water repellent nonwoven fabric sheet in duplicate over the folding portion downward of the top sheet 30 from the back side of the absorbent body 56, so that projecting on the surface side It is formed to, Ru. In order to prevent urine moving laterally transmitted the topsheet 30 above, in particular, the sides of the liquid-impermeable sheet 70 is inserted between the double non-woven sheet, a barrier Ichiriki projecting surface It extends to the middle of the Hus 60.

[0122] In the example of force illustrated shape of the barrier Ichiriki Hus 60 itself can be designed as appropriate, resilient and elastic members in the front end portion and the intermediate portion of the protruding portion of the bus Riyakafusu 60, for example, rubber thread 62 is stretched under in fixed, by its contraction force in the use state, Roh Riyakafusu 60 is adapted to cause standing. In relation rubber thread 62 of the intermediate portion is fixed to the front and rear end portions of the topsheet 30 is positioned closer to the center than the rubber threads 62, 62 of the tip portion, as shown in FIG. 3, the base of the barrier Ichiriki Hus 60 side is erected toward the force connexion obliquely toward the center, tip than the intermediate portion is in the form of standing obliquely Me outwardly.

[0123] (embossed)

In the present invention, as shown in FIGS. 2 and 4, in the area where the absorber 56 positioned along the substantially longitudinal direction on both sides of the crotch portion of the wearer even without low, the absorber 56 from the topsheet 30 grooved embossed Em reaching, Em is formed !, Ru.

[0124] In addition, further filament 52, 52, ... grooved embossed Ec along the (width direction in the embodiment) direction intersecting with respect to the orientation direction of aggregates of may be formed Ec.

[0125] In the embodiment shown in FIGS. 2 and 4, a first embossing Em formed generally longitudinally on opposite sides of the crotch portion of the wearer, Em and, second formed around part of the absorbent body 56 embossing Ec, and a Ec, the first embossing Em, Em and connected the second embossing Ec, and Ec is essentially, substantially annular embossed is formed, Ru.

[0126] For embossing, a "substantially longitudinally along" is meant to include also those in the longitudinal direction in a straight line to form the embossed ho force arcuate or curved, and in FIG. 2 as shown, it may have an appropriately shaped portion in the longitudinal ends. That is, the length of real qualitatively along the longitudinal direction usually as long as it has more than 5 cm, the effect of the present invention. [0127] Further, the direction intersecting with respect to the orientation direction of aggregates of filaments 52, 52, ..., in addition to the case perpendicular to the longitudinal Direction, as long as the "direction crossing", that direction is limited Nag in shall as shown in FIG. 2, may be one arcuate or curved emboss is formed.

[0128] embossing is Ho force formed by pressing only, use an ultrasonic or heat roll is preferably formed in a form to thermally fuse the aggregate of filaments 52, 52, ....

[0129] embossing, as long as a groove-shaped, for example high compression portion and a low compression portion are alternately formed, by even those having unevenness on E down the boss groove bottom, and, rather desired, in the form.

[0130] FIGS. 2 and other forms shown in FIG. 4, as shown in FIG. 5, a groove-like Enbo scan Em along the longitudinal direction, the Em only 开態, as shown in FIG. 6, the width direction (filament 52 , 52 - .. grooved embossed Ec along the direction intersecting with respect to the orientation direction of aggregates of even such as in the form of Ec only,

[0131] In addition to these embossing, as shown in FIG. 7, it may be a groove-like embossment Ec 1, Ec2 in the width direction is formed on the center side and or outer to the embossing Ec. Also, it illustrated such V, but the center side and or other embossed outward may be added form to grooved embossed Em.

[0132] formation region of the embossing is also possible to wearer chooses gender and women.

In the case of women it is desirable be unevenly distributed on the front side. Moreover, disposable diapers because sizes and for infant and adult human are different, but can not be defined uniquely by the length, across 1Z4 above range with respect to the longitudinal direction of the aggregate of the filaments 52, 52, ... It is preferably formed over the 1Z3 above range with respect to the width direction.

[0133] On the other hand, embossed Em, Em between regions, embossed Ec, Ec between regions or the first embossing Em, Em and SA P of the second embossing Ec, substantially within an annular embossed area surrounded by the Ec, the basis weight of the particles can be higher than other regions. According to this embodiment, it is preferred that it is possible to enhance the liquid absorbent after urination in that region (primarily liquid absorption).

[0134] On the other hand, the depth of the groove-like embossment, as in the above embodiment, it is preferable to reach the absorbent body 56. Its "reach" extent, to the top of the absorbent body 56 can be up to the bottom to the center portion of the absorbent body 56 or the absorbent body 56,.

[0135] The depth of the groove-like embossment, until the topsheet 30 parts, until the topsheet 30 and the intermediate sheet 40 portion, the top sheet 30, also to the intermediate sheet 40 and the covering sheet 58 over the portions good Iga, as described in the above embodiment, in order to improve the fit and liquid absorption rate is preferably to reach the absorber 56! /,.

[0136] On the other hand, embossed Em, Em between regions, embossed Ec, Ec between regions, there! / ヽ substantially annular enclosed by the first Enbo scan Em, Em and second embossing Ec, Ec Oite the embossed area, when the density of the aggregate of the filaments 52, 52, ... increase than the other portions, it is possible to enhance the fit 及 beauty liquid absorption rate.

[0137] (Example of a tape-type disposable diapers)

On the other hand, FIGS. 8 and 9 show an example of tape-type disposable diaper. Figure 9 is a Contact Keru 9 9 taken along line diagram in FIG. 8, the absorbent body 20 is shown somewhat exaggerated.

[0138] tape-type disposable diaper 10A has a fastening piece attached to the back side both ends of the diaper, which has a hook element on the fastening surface of the Fasuyungu pieces constituting the rear surface of the diaper the backsheet nonwoven laminate per the mounting of the diaper, is the hook elements of the Fasuyungu piece a diaper without engagable to any point of the surface of the backsheet.

[0139] The absorbent body 20 includes a topsheet 30, between the liquid impervious sheet 70, which is intended to the absorbent body 56 interposed. The absorbent body 56 is entirely wrapped with covering sheet 58 by Tissue Bae over path has a rectangular in plan view. Holding sheet 80 is provided between the absorber 56 and the envelope sheet 58.

[0140] Furthermore, between the topsheet 30 and the absorbent body 56, intermediate sheet 40 is interposed. Liquid impervious sheet 70 forms a wide rectangular than the absorbent body 56, a back sheet 12A made of hourglass-shaped nonwoven fabric is provided on its outside.

[0141] The topsheet 30 forms a wide rectangular than the absorbent body 56 extends slightly outward from the side edges of the absorbent body 56, it is fixed by such liquid-impervious sheet 70 and the hot-melt adhesive.

[0142] on both sides of the diaper is formed barrier Ichiriki Hus 60A protruding to the use surface side, the Roh Riyakafusu 60A includes a Bruno rear sheet 64 also nonwoven force continuously substantially widthwise, resilient and elastic member is made of, for example, a rubber thread 62 as an elastic stretchable member for a single or a plurality of leg comprising rubber thread force. 130 is a Fasuyungu piece by the surface fastener.

[0143] the inner surface of Roh rear sheet 64 has a fixed start end at a location spaced apart from the side edges of the topsheet 30, toward the extending edge of the fixed start mosquitoes also liquid impervious sheet 70, the width outward parts amount is fixed by a hot-melt adhesive. The outer surface of Roh rear sheet 64, the back sheet 12A at its lower surface is secured by a hot melt adhesive, Ru. Further, the gasket cuffs elastic extensible members, for example, rubber thread 66 is provided.

[0144] the inner surface of Roh rear sheet 64, the fixation starting edge to the liquid-impermeable sheet 70 forms a standing edge of Bruno Riyakafusu 60A. In around leg, inside the the upright edge is a free portion which is not fixed to the component, the free portion comes to the upright by contraction force of rubber thread 62.

[0145] In this example, the fastening piece 130, by using a surface fastener, to the back sheet 12 A, the mechanical - can fixed to the cull. Therefore, it is also possible to omit the so-called target tape, and can freely select the fixing position by Fasuyungu piece 130.

[0146] Fasuyungu piece 130 has a plastic, Porirami nonwoven, the base is a back sheet 12A of Fasuyungu substrate such as paper, for example, they are joined by an adhesive, a hook element 130A on the distal end side. Hook elements 130A are bonded by adhesive to Fasuyungu substrate. Hook elements 130A has a number of engagement pieces on its outer surface. Having a temporary fixing adhesive portion 130B from the hook elements 130 A distally. In assembling the end product, so as to prevent peeling of the previous end of Fasuyungu piece 130 by being adhered to the temporary stopper plate adhesive portion 130B force the barrier first sheet 64. In use, it peeled off against its adhesive power, but to bring the distal end side of the full Asuyungu piece 130 to the front body. Distal to the temporary fixing adhesive portion 130B is a knob tab portion exposed Fasuyungu substrate.

[0147] on the opening side of the front body is the inner surface of the Roh Kkushito 12A, the target printing sheet 74 is provided as a design sheet is a measure of the position of fastening hook elements 130A of Fasuyungu piece 130 design is made the target printed subjected, is subjected to visible from the outside through the backsheet 12 A, Ru.

[0148] diaper, when worn, since the diaper is attached to the body in a boat, and since contraction force of rubber thread 62 is exerted, at around legs, barrier Ichiriki Hus 60A is erected by contraction force of rubber thread 62 to.

[0149] a space surrounded by standing part forms a confinement space urine or loose passage. Once urination in this space, with its urine is absorbed into the absorbent body 56 through the topsheet 30, the solid soft flight min, the standing part of the Roh Riyakafusu 60A is barrier one next, the ride Yue For example it can be prevented. Should urine leaking sideways beyond the standing distal edge of the standing portion, side leakage is prevented by the stop function of the flat contact portion.

[0150] In the present embodiment, Roh rear sheet 64 forming each standing cuff is desirably substantially impervious not liquid permeable (or at HanTorueki property). Also, but it may also be such that the nature of repelling liquid by silicon processing on the topsheet (nonwoven laminate) of the present invention. Anyway, Bruno rear seat 64 and the back sheet 12A, it is breathable, respectively, and the barrier first sheet 64 and the back sheet 12A, respectively Thus water pressure lOOmmH

Is a 2 o or more sheets of is preferred. Yotsute thereto, will show a passing temper in the width direction sides of the product, it can prevent stuffiness of the wearer.

[0151] Now, also in this embodiment, the first embossing Em formed generally longitudinally on opposite sides of the crotch portion of the wearer, Em and, second embossing Ec formed around part of the absorbent body 56, and a Ec, the first embossing Em, Em and Ri said second embossing Ec, and Ec is substantially connected, substantially annular embossment is formed. Other variations can be employed similarly to the case of the aforementioned pant.

[0152] Otherwise, for example, for the materials used, etc. of each part, is the same as in the foregoing underpants type disposable diaper, dare omitted.

[0153] <Second Embodiment relates to the invention of claim 5 to 16, wherein>

(Pants-type use, examples of discarded diapers)

Figure 10 is an example of a pants-type disposable diaper is shown. The pants-type disposable diaper 10, the outer surface includes an absorbent body 20 of the outer sheet 12 of the (back surface) side and the inner surface (surface) side, in which the absorbent body 20 is fixed to the outer sheet 12 . Absorbent Body 20 (in the sanitary napkin described below menstrual blood) liquid such as urine or loose passage is a portion for holding absorbed receiving the. The outer sheet 12 is a part for attachment to the wearer.

[0154] (outer sheet) outer sheet 12 includes a waist portion 12T which is determined by the longitudinal direction range waist opening WO force also reaches the upper end of the leg openings LO, as the front-rear direction range of part forming the leg openings LO and an intermediate portion 12L determined. Waist part 12T is, can be divided into a conceptually "waist upper end" 12W and the "waist under part" 12U. The length of these longitudinal directions, depends on the size of the product, and force an example that can be appropriately determined, waist upper portion 12W is 15~40M m, waist bottom 12U can be 65~120mm . On the other hand, both side edges of the intermediate portion 12L is narrowed along the leg of the adherend's herein is site to put the legs of the wearer. Result of this, the outer sheet 12 has a substantially hourglass shape as a whole. In the illustrated example, relationship of forces this width being smaller than the width force the absorbent body 20 of the outer sheet 12 in the crotch between the portions may be reversed, or the same width.

[0155] outer sheet 12, as shown in FIG. 11, after the absorbent body 20 is fixed which is provided at a predetermined position, is folded back and forth, both sides of the front body 12F and a back body 12B of the exterior sheet 12 junction region 12A of is bonded by thermal fusion. Yotsute thereto, the structure shown in FIG. 10, a pants-type disposable diaper having a waist opening WO and a pair of spreader openings LO is obtained.

[0156] outer sheet 12 may be formed by more sheets, to form an outer layer and an inner layer in two-layer sheets laminated by an adhesive such as hot-melt bets adhesive is preferred. The outer layer and inner layer, in particular without limitation can be used, preferably in terms of feel and waterproof use a water-repellent nonwoven fabric. Outer layer, each of the inner layer may be formed by laminating a plurality of materials. Although the thickness of the outer layer and the inner layer can be appropriately determined, preferably the thickness of the outer layer is not less than the thickness of the inner layer. Outer layer and the inner layer is preferably in the range of their respective basis weight of 5 to 30 g / m 2. The thickness of the outer layer 12S has a thickness of preferably fitting inner layer is less 5 m m is preferably not more than lmm.

[0157] resilient and elastic members 12C in the outer sheet 12, 12D is more fixed in a hot-melt adhesive or the like in a stretched state. Resilient and elastic members 12C, as the 12D, thread or string-like, can be used particularly without limitation as long as elongated rubber material of the strip or the like.

[0158] More specifically, between the outer layer and the inner layer of the waist bottom 12U of the outer sheet 12, the waist resilient and elastic members 12C extending along the width direction with a predetermined interval in the longitudinal direction number, is provided to, for example, about 15 to 40 present in parallel.

[0159] As shown in FIG. 10, the waist resilient and elastic members 12C in a portion that overlaps the main absorber 20 are cut with the embossing force 卩Eya needling process or the like, is, in part component that overlaps the absorbent body 20 waistline by not providing the resilient and elastic members 12C, eliminate the contractile force or weakening may Rukoto. For cutting, JP 2002- 178428 Patent as shown in Japanese, may be cut by Yogu also one place even if many places cut at predetermined intervals in the width direction. Thus, if the resilient and elastic members 12C are discontinuous at a portion that overlaps the main absorber 20 (may be either a part or all), contraction force acting on the absorbent body 20 is eliminated or weakened becomes, the absorbent body 20 is absorbed inhibition due to shrinkage is unlikely to occur. The width of the cutting portion or no portion of the resilient and elastic members 12C has as possible out be appropriately determined. Further, unlike the illustrated embodiment, only one of the dorsal B and ventral F, may be discontinuous girth resilient and elastic members 12C.

[0160] waist resilient and elastic members 12C of thickness, but the arrangement interval can be decided as appropriate, preferably, the thickness is lOOOdtex less, and particularly 700~400Dtex, arrangement interval L~20mm, particularly 1 to 1 0 mm It is.

[0161] On the other hand, the waist upper portion U of the outer sheet 12, the outer layer is folded back to the inside of the outer sheet 12 in the barrel opening WO, between the folded portion and the outer sheet 12, the end of the trunk opening WO barrel end resilient and elastic members 12D and a parallel spaced the edge is fixed in a stretched state. The thickness of the barrel end elastic member 12D, but cut with be determined interval and number are appropriately, for example, as the thickness 400~900Dtex, preferably about 4 to 10 present is 3 to 6 mm, a number as interval.

[0162] (absorbent body)

The absorbent body 20, as shown in FIG. 12, comprises a liquid-permeable topsheet 30, a liquid-impermeable sheet (also called back sheet) 70, and an absorbent element 50 interposed between them ing. On the back side of the liquid impervious sheet 70, the outer sheet 12 is provided as described above. Further, on both sides of the absorbent body 20, it is provided Bruno Riyakafusu 60, 60 force to protrude use surface side.

[0163 (topsheet) topsheet 30 may be formed by a liquid permeable material, for example, Yuanamata can be used nonwoven fabric or non-porous, and porous plastic sheet. Is a non-woven fabric, it is not limited by material fiber Nag example, Orefin system such as polyethylene and polypropylene, polyester, synthetic fibers polyamide or the like, regenerated fibers such as rayon Ya cupra, natural fibers such as cotton, etc. and, mixed fibers of two or more is used, or the like can be used composite fibers. Further, nonwoven fabric, nag even be limited by a production method such as a spun lace method, spun bond method, thermal bond method, melt blow down method, needle punching method, air-through method, was prepared by a known method such as point bond method it is possible to use things. Of these, flexibility, as long as obtaining the drapability, span lace method is preferred instrument bulkiness, as long as obtaining the softness, thermal bond method is preferable mosquito 卩E method.

[0164] Further, the topsheet 30 may be made of a single sheet, or may be a laminated sheet obtained by combined Ri bonded two or more sheets. Similarly, the topsheet 30, with respect to a flat surface direction, be made of one sheet, it may be composed of two or more sheets.

[0165] (liquid-impermeable sheet)

Liquid impervious sheet 70 is a sheet that is disposed on the back side of the absorbent body 56. The liquid impervious sheet material, is not particularly limited interposed, for example, and Orefin system 榭脂 such as polyethylene and polypropylene, laminating over preparative nonwoven fabric laminated nonwoven polyethylene sheet or the like, the waterproof film substantially nonwoven fabric while ensuring liquid-impervious by (in this case, the liquid impervious sheet in the waterproof film and the nonwoven fabric is composed.) or the like can be used. Of course, the addition to, in recent years, even a material having a liquid-impermeable and vapor-permeable that is also favored by use standpoint force of stuffiness prevention can be exemplified. The sheet material having the liquid-impermeable and moisture-permeable, for example, by kneading an inorganic filler in O Les fin system 榭脂 such as polyethylene and polypropylene, after forming a sheet, uniaxially or biaxially the microporous sheet obtained by stretching can be exemplified.

[0166] (absorption element)

Absorbing element 50, and the lower layer absorber 56B, it has an upper layer absorbent body 56A provided on the top sheet 30 side, of which is and absorption obtained by opening the upper absorbent body 56A force the tow 1. is formed of a collection of 0 times or less of the flame absorption filaments 52 of its own weight. Then, in the illustrated embodiment the filament 52 of the upper layer absorbent body 56A along the top sheet 30 extends in the longitudinal direction, and as shown in FIG. 11, both ends (tip and a proximal end) of the lower absorbent filaments 52 It is spaced inwardly from the leading and trailing edges (periphery of the absorbent element 50) of the body 56B.

[0167] In this case, even if the liquid component which is fed to the upper layer absorbent body 56A reaches the upper layer absorbent body 56A across the street Firame cement, where stops diffusion of the liquid, dispersion expansion until the peripheral edge of the absorbent element 50 do not do. The liquid portion diffused into the upper layer absorbent body 56A will be held shifts to the lower absorbent body 56B.

[0168] both ends of the filament 52 (leading and trailing edges of the upper layer absorbent body 56A), the distance y between the leading and trailing edges of the lower absorbent body 56B may be said differ indiscriminately by the wearer of interest no but, 10 to 300 mm, it is desirable in particular 50 to 150 mm. If distance y is too short, becomes poor in effect of preventing leakage, diffusion distance becomes short due to too long upper layer absorbent body 56A, there is a possibility that the diffusion performance becomes poor.

[0169] Further, the upper layer absorbent body 56A not only both ends of the filament 52, for the side edges, the spaced apart from both side edges of the lower layer absorber 56B is desirable. The distance X is not be generalized because it varies depending on the subject and name Ru wearer, 0~90Mm, is particularly Ru 0~50mm der desirable.

[0170] As the size of the lower layer absorber 56B, longitudinal length 200~600Mm, as the size of the preferred tool upper layer absorbent body 56A is given to the width 100 to 180 mm, longitudinal length 100 to 500 mm, a width preferably in the 50~ 120mm.

[0171] assembly of filaments 52 forming the upper layer absorbent body 56A is bundled aggregates, or becoming rough, easily or cause their shape. Therefore, for ease of handling in production, as shown in FIG. 12, or paste liquid-permeable sheet 40 to the topsheet 30 side of the upper layer absorbent body 56A using a hot-melt preparative adhesive, FIG. 13 as shown in, or wrap integrally with the entire circumference of the upper layer absorbent body 56A (the front and back and sides) liquid-permeable sheet 40, or as shown in FIG. 14, the liquid-permeable sheet on the back surface of the upper layer absorbent body 56 a 41 preferably, the paste using a hot-melt adhesive or the like. For the former two may be an intermediate sheet you later some or all of the liquid-permeable sheet 40. In addition, in any case, separately, the top sheet 3

It may be provided an intermediate sheet between 0 and the upper absorber 56A.

[0172] Flame absorbent filament assembly constituting the upper layer absorbent body 56A can be prepared by opening a configuration tow (fiber bundle) with a poorly absorbing filaments (substantially continuous long fibers). Filament 52 can be Zaisa longitudinal width direction or thickness direction, and the like, along any direction extending of the article.

[0173] The material of the flame absorption filaments 52, can be absorbed amount used without any particular limit constant if 1.0 times or less of its own weight, for example, polysaccharides or derivatives thereof (cellulose, cellulose E ester, chitin, chitosan, etc.), synthetic polymers (polyethylene, polypropylene, polyamide

, Polyester, Borirakutaamido, poly Bulle acetate, etc.), especially the force or the like can be used, cellulose ester and cellulose are preferred.

[0174] The cellulose, cotton, linter, and cellulose and butter Terrier cellulose from plants such as wood pulp can be used, Yogu playback cellulose be regenerated cellulose such as rayon be those spun it may be.

[0175] Suitable employed may cellulose esters such as cellulose acetate, cellulose butyrate, organic acid esters such as cellulose propionate; cellulose § Se Tate propionate, cellulose acetate butyrate, cellulose acetate phthalate, mixed acid esters such as nitric acid cellulose acetate; and cellulose ester derivatives such as and poly force Purorata tons chart Toys spoon cellulose esters. These cellulose esters can be used alone or in combination of two or more kinds. The viscosity average polymerization degree of the cellulose ester, for example, 50 to 900, preferably Ru der about 200-800. The average degree of substitution of cellulose ester, for example, 1.5 to 3.0 (e.g., 2-3) is about.

[0176] The average degree of polymerization of the cellulose ester, for example 10 to 1000, preferably 50 to 900, and preferably, to about 200 to 800 to the al, average degree of substitution of the cellulose ester, for example, about 1 to 3 , preferably 1-2. 15, more preferably to a 1.1 to 2.0 mm. The average degree of substitution of the cellulose ester may be selected from the viewpoint of enhancing the biodegradability. The [0177] Cellulose esters, organic acid esters (e.g., esters of organic acids of about 2 to 4 carbon atoms) is particularly suitable cellulose acetate. By the way, in the case of Serurosuase Tate, absorption amount is 0.1 to 0.3 times of its own weight. Degree of acetylation of cellulose acetate is often of the order of 43 to 62% is preferable because excellent in especially biodegradable and is about 30-50%. Particularly preferred cellulose esters are Serurosujiase Tate.

[0178] Flame-absorbing filaments, various additives, for example, thermal stabilizers, colorants, oil, yield improving agent, may contain a whiteness improving agent and the like.

[0179] The fineness of the flame-absorbing filaments, for example, L~16dtex, preferably 1~: LOdtex, more preferably l~5dtex is desirable. Filaments may be non-crimped fibers but preferably crimped fibers. Wound degree of crimping of the crimped fibers, for example, 5 to 75 per inch, preferably 10 to 50, even more preferably, to 15 to 50 or so. Also, in many cases using crimped fibers evenly scratch. With crimped fibers, it is possible to produce a bulky and lightweight suction absorbent body can be easily produced with high integrity tow by entanglement between fibers. Cross-sectional shape of the filaments is not particularly limited, for example, circular, oval, (if example embodiment, Y-shaped, X-shaped, I-shaped, R-shaped, etc.) profiled be any such or hollow good. Off Iramen I, for example, 3, 000-1, 000, 000 present, preferably <5, 000-1, 000, form 000 present about tow formed by bundling monofilaments (fiber bundle) in is used. Fiber bundles 3, 000-1, preferably constituted by focusing the filaments of about 000, 000 present

[0180] Deng, because entanglement between filaments is weak, in order to mainly maintain the shape, it is possible to use a binder having an action of bonding or fusing the contact portion of the Firame cement. As the binder, Toriasechin, triethylene glycol diacetate, triethylene glycol dipropionate, dibutyl phthalate, dimethoxy E chill phthalate, other ester-based plasticizers such as Kuen acid tri E chill esters, various 榭脂 adhesives, especially hot it can be used a soluble plastic 榭脂.

[0181] The thermoplastic 榭脂 used as a binder, the adhesive strength is 榭脂 expressed are water-insoluble or sparingly water-soluble 榭脂, and water-soluble 榭脂 is by melt 'solidified. The water-insoluble or sparingly water-soluble 榭脂 and a water-soluble 榭脂, may be used in combination as needed.

[0182] Examples of the water-insoluble or sparingly water-soluble 榭脂, for example, polyethylene, polypropylene, E styrene propylene copolymer, Orefin system of homopolymers or copolymers such as ethylene acetate Bulle copolymer, polyvinyl acetate Bulle, polymethacrylic acid methyl, methacrylate Mechirua acrylic acid ester copolymer, (meth) acrylic 榭脂 such copolymerizing polymers of acrylic monomer and a styrene monomer, polyvinyl chloride, acetate Bulle Ichishioi匕 Bulle copolymers, polystyrene , styrene emissions based polymers such as copolymers of styrene monomer and (meth) acrylic monomer, modified which may be polyester, nylon 11, nylon 12, nylon 610, a polyamide such as nylon 612, rosin derivatives ( For example, rosin esters), coal hydrogen 榭脂 (e.g., terpenes 榭脂 Dicyclopentadiene 榭脂, petroleum 榭脂), such as hydrogen added hydrocarbon 榭脂 can be used. These thermoplastic 榭脂 may be used singly or in combination.

The [0183] water-soluble 榭脂, various water-soluble polymers, such as poly Bulle alcohol, polyvinyl - having Rupiroridon, poly Bulle ether, and Bulle monomer, a carboxyl group, a sulfonic acid group or their salts water-soluble vinyl 榭 fat and a copolymer of a copolymerizable monomer can be used acrylic-based water-soluble 榭脂, polyalkylene oxide, water soluble polyester, water-soluble polyamide. These water-soluble 榭脂 may be used in combination of two or more kinds together to be able to use alone.

[0184] The thermoplastic 榭脂 include antioxidants, stabilizers such as ultraviolet absorbers, fillers, plasticizers, preservatives, may be added various additives such as fungicides.

[0185] The tow are not detailed it can be manufactured by a known method. Suitably tow bale of cellulose diacetate that can be used in the absorbent element 50, Serra - marketed by such Ichizusha Ya Daicel Chemical Industries. Tow bale of cellulose diacetate, the density is from about 0. 5 gZcm 3, the total weight is 400~600Kg.

[0186] From this bale, peeled off tow is opened to a wide band so as to have a desired size, bulk. Open 繊幅 tow is arbitrary, for example, the width 100 to 2000 mm, preferably to a 100~300mm about the width of the suction absorbent body of the product. Further, by adjusting the fit opening fineness of tow, it is possible to adjust the density of the absorbent body. [0187] The open 繊方 method of tow, for example, tow passes around a plurality of opening rolls, a method of opening by gradually expanding the width of the tow with the progress of tow tension tow and (elongation) how to spread repeatedly and relaxation (contraction), a method of widening, opening with compressed air can be used.

[0188] upper layer absorbent body 56A is preferably does not contain a superabsorbent polymer particles, may be contained. Details of the high-absorbent polymer particles described below.

[0189] On the other hand, the lower layer absorber 56B is a universal absorber formed by fiber stacking a flocculent mixture of pulp fibers 55 and superabsorbent polymer particles 54. Lower absorbent body 56B is also possible to similarly rectangle and the upper absorbent body, as in the illustrated example, lack off both sides of the crotch portion in an arc along the leg-! Was a hourglass shape it is also possible to.

[0190] and the high-absorbent polymer particles 54 is meant to include "powder" in addition to "particles". The particle size of the superabsorbent polymer particles 54 is not particularly limited, 100~1000 / ζ πι, is desirable especially for 1 50-400 mu m. The water absorption of the superabsorbent polymer particles 54 is not particularly limited, but preferably more than 40GZg. Is a high-absorbent polymer particles 54 may be based on starch and cellulose-based and synthetic polymer-based, starch acrylic acid (salt) graft copolymer, starch-acrylonitrile copolymer Keni 匕物, sodium carboxymethylcellulose it can be used, such as cross-linked product, acrylic acid (salt) polymer. A shape of the high-absorbent polymer particles 54 can also be used as a force other shapes are preferred those usually granular material like used.

[0191] As high-absorbent polymer particles 54, those water absorption speed power 0 seconds Ru preferably used. If water absorption rate exceeds 40 seconds, the liquid supplied into the absorbent body 56 is easily generated so-called back to become out back to the absorption body. As the high-absorbent polymer particles 54, it is preferably used a gel strength of the above LOOOPa. Thus, it can be effectively suppressed feeling regarding the base after liquid absorption.

[0192] basis weight of the superabsorbent polymer particles 54 in the lower absorbent member 56B can be suitably determined according to the absorption amount required in applications of the absorber. Therefore not be unconditionally, but can be a 50~350gZm 2. By the basis weight of the superabsorbent polymer particles 54 and 50GZm 2 or less, by weight of the superabsorbent polymer particles 54, it is possible to prevent the weight estuary result is hardly exerted. Beyond 350GZm 2, an excess of fool Ridenagu superabsorbent polymer particles 54 that effect is saturated, so give違禾b feeling was gritty to the touch on the product.

If [0193] necessary, the high-absorbent polymer particles 54 may adjust the density or amount in a planar direction of the lower absorbent member 56B. For example, there can be a large amount of the superabsorbent polymer one grain 54 than other portions excretion site. When considering gender differences, For man it increases the front density (amount), is a woman can increase the density of the central portion (the amount). Furthermore, local (e.g., spots) high-absorbent polymer particles 54 are present Shinano in the planar direction of the lower absorbent body 56B, it may be provided partially.

[0194] (covering sheet)

If the inclusion of superabsorbent polymer particles 54 in the lower absorbent member 56B, preferably wrapped with covering sheet 58. The same applies to the case of incorporating the superabsorbent polymer particles 54 in the upper layer absorbent body 56A. The covering sheet 58 is also a component of the absorbent element 50.

[0195] The covering sheet 58 may be used tissue Bae over Bruno, in particular crepe paper, nonwoven, Porirami nonwoven, a sheet or the like small holes opened. However, it is preferably a sheet of the superabsorbent polymer particles do not appear missing. When using the non-woven fabric instead of crepe paper, hydrophilic SMMS a (spunbond Z meltblown Z meltblown Z spunbond) nonwoven fabric is particularly preferred, the material can be used polypropylene, polyethylene Z polypropylene. Basis weight, 8~20g / m 2, desirably in particular of 10 to 15 g / m 2.

[0196] covering sheet 58, another form of an envelope only the lower absorbent member 56B as shown in FIG. 12, may also be employed form of an envelope together upper layer absorbent body 56A and the lower absorbent member 56B as shown in FIG. 15 it can. Also, covering sheet 58, it is preferable for wrapping the whole object as shown in FIG. 12, good only rear surface and side surfaces of the object just encapsulates!, (Not shown).

[0197] (intermediate sheet)

To transition to quickly absorb body 56A of the liquid that has passed through the top sheet 30, in direct contact with the back surface of Toppushi over preparative 30, permeation rate of the liquid from the topsheet 30 faster intermediate sheet over preparative ( "second sheet "also called) can be provided with a 40. The intermediate sheet 40 is also a component of absorption element 50. Intermediate sheet 40 is to prevent "back" phenomenon of absorbed liquid Nag in Chikarari Invite enhance absorption performance promptly migrated to the upper absorber 56A liquid.

[0198] as the intermediate sheet 40, and the same material as topsheet 30, spunlaced, pulp nonwoven fabric, mixing of the pulp and rayon sheets, as possible out to use a point-bonded or crepe paper. In particular an air-through nonwoven fabric and spun bonded nonwoven fabric is preferred ヽ.

[0199] intermediate sheet (second sheet) 40, Ru is placed in contact with the rear surface of the topsheet 30. The intermediate sheet may be in the form without the (second sheet) 40.

[0200] intermediate sheet 40 is preferable to be and placed at the center smaller than the width of the absorbent element 50 as shown embodiment, it may be provided over the entire width of the absorbent element 50. Front-rear length of the intermediate sheet 4 0 may be the same as the length of the absorbent element 50, excretion portion may be a short length range around the. In particular, the width of the intermediate sheet 40, the length, the width of the upper layer absorbent body 56A, preferably the same as the length.

[0201] (holding sheet)

As absorbent element 50, in the case of using the high-absorbent polymer particles 54, as shown in FIGS. 15 and 17, arranged partial back surface side of the high-absorbent polymer particles 54, i.e. in the illustrated embodiment, the lower layer absorber 56B or and the back of the absorbent body 56, the holding sheet 80 may be provided between the back side portion of the covering sheet 58 (the portion of the lower side). The holding sheet 80 is also a component of the absorbent element 50. The holding sheet 80 may not Nag thus provided an essential component.

[0202] high-absorbent polymer particles 54, the manufacturing process or at about the flow passage to the consumer to use, and may travel. For example, when mixing superabsorbent polymer particles 54 in the lower absorbent body 56B, there is a high-absorbent polymer particles 54 from the lower absorbent body 56B fall out. Irregularities of the superabsorbent polymer particles which fall out gives the gritty the uncomfortable feeling when the consumer touches by hand when used. For this problem, reinforced when interposing the holding sheet 8 0 with retention performance of the absorbent polymer on the back side of the arranged partial superabsorbent polymer particles 54, the elasticity is not enough just covering sheet 58 and, reduce or prevent an uncomfortable feeling when the consumer is touched by hand when you want to use.

[0203] the holding sheet 80 material is not particularly limited, sufficient as long as it has a retention capacity of the superabsorbent polymer particles 54. Specifically, a nonwoven fabric, crimped pulp, low-absorbent cotton fibers (e.g., non-defatted cotton fibers, degreased cotton fibers, rayon fibers and those treated with water repellent agent or hydrophobizing agent.) polyethylene fibers, polyester fibers, acrylic fibers, polypropylene fibers, silk, cotton, linen, nylon, polyurethane, acetate fibers, etc. can be examples Shimesuru.

[0204] If the holding sheet 80 and the nonwoven fabric, its holding sheet 80, compression energy based on KES test is 0. 01~:. LO OOgfcm / cm 2, preferably, 0. 01~: L OOgfcm / cm 2 in, and the compression resilience from 10 to 100 percent, preferably, may is 70% to 100% of the nonwoven fabric.

[0205] The reason for providing the holding sheet 80, for example is to hold the absorbent body 56 from coming off downward (exit was) high-absorbent polymer particles 54. Therefore, the high-absorbent polymer particles 54 exit, Runode be contacted to the user through the covering sheet 58 and the holding sheet 80, as discomfort was gritty to the user, there is no transmitted fear. In particular, when is a nonwoven fabric which is above compression energy and compression resilience, the holding function is exhibited sufficiently.

[0206] In addition, the high-absorbent polymer particles 54 exit, is held by the holding sheet 80, there is no moving the covering sheet 58 above, there is no risk that occurs uneven distribution of absorption capacity. In particular, the holding sheet 80 on to the high-absorbent polymer particles 54 to prevent movement, it can be coated with a hot-melt adhesive having a pre-adhesive on the holding sheet 80. The upper surface of the holding sheet 80 (Kochikara surface using surface side) by a rough surface, the holding sheet 80 on the high-absorbent polymer particles 54 so as to prevent movement Yo,. The roughened or fuzz means for this, a non-net face not net surface during manufacture of the nonwoven fabric, performing marble force 卩E, processed by needle-punching, the elevation gel such as Burashinnguka 卩E can.

[0207] holding sheet 80 is also provided only on the lower side of the absorbent body 56 as shown in FIG. 15 or the like, also not shown, extend roll up the sides of the absorbent body 56 to the upper surface of the street absorbent body 56 even if the good. It is also possible to use a holding sheet 80 a plurality Again.

[0208] The above examples, the force holding sheet 80 is an example of providing the holding sheet 80 between the back side portion of the absorbent body 56 and the covering sheet 58 may be a back surface side of the covering sheet 58 ( its form is not shown FIG.). in short, by providing the holding sheet 80 on the back side of the absorbent body 56, and or resulting let such castings reduce the gritty the discomfort when touching the back surface force product .

[0209] If the holding sheet 80 is provided between the absorbent body 56 and the liquid impervious sheet 70, the flame absorption filament aggregate absorption intensive fiber aggregate than body, for example, absorption of about 5 to 30 times When forming the holding sheet 80 using a fiber 維集 coalescence, the holding sheet 80 can compensate for the water absorption performance of the absorbent body 56 is preferable because it improves the initial absorption rate and diffusion properties.

[0210] (in the form of other absorbent components)

[0211] the lower absorbent member 56B of the absorbent element 50 is preferably mixed stacks of pulp fibers 55, as in the above example superabsorbent poly mer particles 54, similar to the flame absorption and upper layer absorbent body 56A the aggregate of the filaments 52, may contain a high-absorbent polymer particles 54. In this case, the high-absorbent polymer particles 54, for a set of filaments 52, substantially being dispersed throughout the thickness direction is preferable. The state of this substantially is dispersed throughout the thickness direction schematically shown in enlarged view of FIG. 12. Incidentally, the upper portion of the filament assembly, the lower, and the high-absorbent polymer particles 54 is not in the middle section, or if it is negligible even can not be said "are dispersed throughout the thickness direction" . Thus, "are dispersed in the thickness direction whole", with respect to the filament assembly, other forms of the whole thickness direction is "uniformly" dispersed, upper, "ubiquitously in the lower and or intermediate portion there "is still included top, also form dispersed in each part of the lower and middle portions. Also, some high absorption Osamusei polymer particles 54 and form remaining in the filament aggregate surface, some forms of high absorption Osamusei polymer particles 54 are on the covering sheet 58 falls out filament aggregate strength, forms in the holding sheet 80 on there is no intention to be eliminated.

[0212] In addition, the absorbent element 50, as shown in FIG. 17, may have a structure having an absorber 56 of the single layer is also poorly absorbed filament aggregate strength described above. In this case, the distance from the periphery of the absorbent element 5 0 filaments at both ends, is that is the distance between the leading edge 及 beauty trailing edge of the absorbent element 50 and the leading and trailing edges of the absorbent body 56 is. 10 to 125 mm preferably, it is desirable in particular 50 to 125 mm. There is a possibility that this distance becomes poor too short leakage preventing effect. Others are basically similar to the above-mentioned upper layer absorbent body 56A, monkey paste liquid-permeable sheet such as the second sheet 40, such as providing the embossed depression F below, you to adopt an appropriate structure in .

[0213] In addition, the absorbent element 50 is not shown may have a structure having three or more layers of the absorber.

In this case, one or more of the absorber located in the top sheet 30 side is formed with a poorly absorbing full Iramento assembly described above, Ru of the preferred.

[0214] Furthermore, in the present invention, form the upper layer absorbent body and the lower layer absorbent body is positioned upside down with respect to the embodiment shown in FIG. 12 or the like described above, i.e., although not shown, the lower layer absorber flame absorption filaments becomes set strength, both ends of the filaments are also proposed form is spaced from the peripheral edge of the upper layer absorbent body on the inside. Besides being upside down it is basically the same as the foregoing embodiment.

As [0215] absorbent element 50, the case of stacking a plurality of the absorbent body, also to all the same material configuration, also be of different materials constituting the shift or one or more layers with respect to the other layers it can. Further, regardless of the number of layers, it has the preferred not have only a force becomes layers superabsorbent polymer particles.

[0216] (barrier one force Hus)

Hus barrier Ichiriki provided on both sides of the product 60, 60 prevent urine or loose stool moving laterally transmitted the topsheet 30 above, provided in order to prevent side leakage, Ru.

[0217] The depicted Roh Riyakafusu 60 is obtained by the water repellent nonwoven fabric sheet in duplicate over the folding portion downward of the top sheet 30 from the back side of the absorbent body 56, so that projecting on the surface side It is formed in. To increase the leakproofness, in particular, is a second liquid impervious sheet 72 is inserted between the double non-woven sheet, extends partway Roh Riyakafusu 60 protruding on the surface side.

[0218] In the example of force illustrated shape of the barrier Ichiriki Hus 60 itself can be designed as appropriate, resilient and elastic members in the front end portion and the intermediate portion of the protruding portion of the bus Riyakafusu 60, for example, rubber thread 62 is stretched under in fixed, by its contraction force in the use state, Roh Riyakafusu 60 is adapted to cause standing. In relation rubber thread 62 of the intermediate portion is fixed to the front and rear end portions of the topsheet 30 be located closer to the center than the rubber threads 62, 62 of the tip portion, as shown in FIG. 12, the base side of the barrier one cuff 60 is erected toward the force connexion obliquely toward the center, tip than the intermediate portion is in the form of standing obliquely outwardly.

[0219] (embossing)

As shown in FIG. 16, the recess in the embossed on the surface side force thickness direction of the topsheet 30 E, may be formed F. In this case, ho force or a recess E by embossing only top sheet 30, or a recess not shown in the embossed only to both the topsheet 30 and the intermediate sheet 40, 12 and 16, etc. as shown in, or can form a concave portion F by embossing so as to reach from the surface side of the top sheet 30 in the thickness direction partially or substantially the entire suction absorbent body 56A (or 56B). Such embossed by recess E, in order to form the F, as the intermediate sheet 40, basis weight 8~60GZm 2, thickness 0. 2 to 1. 5 mm, the topsheet 30, a basis weight of 15 ~80GZm 2,ヽin the range of thickness of 0. 2 to 3. 5 mm is inhibition and suchヽconditions pervious, preferred for capable of performing sufficient embossing force卩E.

[0220] Further, although not shown, a recess in Yogu more topsheet 30 and the intermediate sheet 40 also forms a recess in the embossed only on the intermediate sheet 40 Nag possible to form a recess in the top sheet 30 Kotonagu it is a recess in the embossed only the absorbent element 56, also preparative Ppushito 30, the intermediate sheet 40 and the covering sheet 58 may be a recess in the embossed only on the absorber 58 which Nag possible to form a recess.

[0221] Further, although not shown, it is also possible to form the recesses in the embossed on the back side force thickness direction. Such recesses, the holding sheet 80, covering sheet 58, from the back side of the liquid impervious sheet 70 or the outer sheet 12, by embossing to reach any of the member to the topsheet 30 It can be formed. The recess of such back surface side is preferably formed together with the recess E of the surface side, it can be formed only recess in the back surface side without forming the recess E of the surface side. When providing recesses on the front and back sides may be in the form of recesses as front and back common to Yogu The front and back differ also. In this case, the product may be subjected interposed therebetween sides simultaneously embossing force 卩E a between the embossing roll carving the engraved roll.

[0222] recess E by embossing, F is the effect of diffusing induce liquid in its extending direction. In addition there is also the effect of increasing the rigidity. Therefore, the recess in the embossed E, form of F is desirably determined in consideration of these effects. For example, recesses, others continuing to substantially groove-like (including the case where the concave portion of the multiple forms the one groove Nari columns at intervals), the point-like plurality of recesses spaced apart be those that are arranged may be. As the flat pattern, a groove-like or spot-like recess, the longitudinal direction, the width direction of the product, these combined grid-like, zigzag (a zigzag) which reciprocates in the width direction, or are randomly arranged form, or the like can Rukoto adopted a. Furthermore, the pin-like, Mt. shape, bellows shape or the like, can be adopted as appropriate forms.

[0223] In particular, the embossed depressions in the plane pattern shown in FIG. 11, the surface side force DOO Ppushito 30 as shown in FIG. 12 or the like is also preferably formed so as to reach the upper layer absorbent body 56A. Embossed depressions F plane pattern of this is, on both sides of at least the crotch portion, having an arcuate portion which bulges longitudinal direction intermediate portion in the widthwise center side while extending along the longitudinal direction. When having an arcuate portion, such as this, the use surfaces in the width direction center is raised than: both sides, it is possible to improve the fit against the crotch Ya gluteal cleft. Further, the embossed depression F of the illustrated embodiment, are connected by a portion between the front and rear ends of the arcuate portion of the inner side extending in the width direction, excretion portion is surrounded by the embossed depressions F cyclic. Further, the arcuate portions on both sides are formed with a plurality of spaced apart in the width direction as shown. As a result, the diffusion of unwanted liquid is suppressed by embossed depressions F, so excellent effect of preventing leakage.

[0224] (Other)

Although not shown, the components of the absorbent body 20 may be secured to each other by a hot melt base data, such as an adhesive, a bead or spiral coating.

[0225] (Example of a tape-type disposable diapers)

On the other hand, FIG. 18 and FIG. 19 shows an example of a tape-type disposable diaper. 19 is shown slightly exaggerated for the force-absorbing body 20 is a 9 9 taken along line diagram in FIG. 18.

[0226] tape-type disposable diaper 10A has a fastening piece attached to the back side both ends of the diaper, which has a hook element on the fastening surface of the Fasuyungu pieces constituting the rear surface of the diaper the backsheet nonwoven laminate per the mounting of the diaper, is the hook elements of the Fasuyungu piece a diaper without engagable to any point of the surface of the backsheet. [0227] The absorbent body 20 includes a topsheet 30, between the liquid impervious sheet 70, which is intended to the absorbent body 56 interposed. The absorbent body 56 is generally by covering sheet 58 has been wrapped, has a rectangular in plan view. And the holding sheet 80 is provided between the absorbent body 56 and the covering sheet 58! /, Ru.

[0228] Furthermore, between the topsheet 30 and the absorbent body 56, intermediate sheet 40 is interposed. Liquid impervious sheet 70 forms a wide rectangular than the absorbent body 56, a back sheet 12A made of hourglass-shaped nonwoven fabric is provided on its outside.

[0229] The topsheet 30 forms a wide rectangular than the absorbent body 56 extends slightly outward from the side edges of the absorbent body 56, it is fixed by such liquid-impervious sheet 70 and the hot-melt adhesive.

[0230] on both sides of the diaper is formed barrier Ichiriki Hus 60A protruding to the use surface side, the Roh Riyakafusu 60A includes a Bruno rear sheet 64 also nonwoven force continuously substantially widthwise, resilient and elastic member is made of, for example, a rubber thread 62 as an elastic stretchable member for a single or a plurality of leg comprising rubber thread force. 130 is a Fasuyungu piece by the surface fastener.

[0231] the inner surface of Roh rear sheet 64 has a fixed start end at a location spaced apart from the side edges of the topsheet 30, toward the extending edge of the fixed start mosquitoes also liquid impervious sheet 70, the width outward parts amount is fixed by a hot-melt adhesive. The outer surface of Roh rear sheet 64, the back sheet 12A at its lower surface is secured by a hot melt adhesive, Ru. Further, the gasket cuffs elastic extensible members, for example, rubber thread 66 is provided.

[0232] the inner surface of Roh rear sheet 64, the fixation starting edge to the liquid-impermeable sheet 70 forms a standing edge of Bruno Riyakafusu 60A. In around leg, inside the the upright edge is a free portion which is not fixed to the component, the free portion comes to the upright by contraction force of rubber thread 62.

[0233] In this example, the fastening piece 130, by using a surface fastener, to the back sheet 12 A, the mechanical - can fixed to the cull. Therefore, it is also possible to omit the so-called target tape, and can freely select the fixing position by Fasuyungu piece 130.

[0234] Fasuyungu piece 130 has a plastic, Porirami nonwoven, the base is a back sheet 12A of Fasuyungu substrate such as paper, for example, they are joined by an adhesive, a hook element 130A on the distal end side. Hook elements 130A are bonded by adhesive to Fasuyungu substrate. Hook elements 130A has a number of engagement pieces on its outer surface. Having a temporary fixing adhesive portion 130B from the hook elements 130 A distally. In assembling the end product, so as to prevent peeling of the previous end of Fasuyungu piece 130 by being adhered to the temporary stopper plate adhesive portion 130B force the barrier first sheet 64. In use, it peeled off against its adhesive power, but to bring the distal end side of the full Asuyungu piece 130 to the front body. Distal to the temporary fixing adhesive portion 130B is a knob tab portion exposed Fasuyungu substrate.

[0235] on the opening side of the front body is the inner surface of the Roh Kkushito 12A, the target printing sheet 74 is provided as a design sheet is a measure of the position of fastening hook elements 130A of Fasuyungu piece 130 design is made the target printed subjected, is subjected to visible from the outside through the backsheet 12 A, Ru.

[0236] diaper, when worn, since the diaper is attached to the body in a boat, and since contraction force of rubber thread 62 is exerted, at around legs, barrier Ichiriki Hus 60A is erected by contraction force of rubber thread 62 to.

[0237] a space surrounded by standing part forms a confinement space urine or loose passage. Once urination in this space, with its urine is absorbed into the absorbent body 56 through the topsheet 30, the solid soft flight min, the standing part of the Roh Riyakafusu 60A is barrier one next, the ride Yue For example it can be prevented. Should urine leaking sideways beyond the standing distal edge of the standing portion, side leakage is prevented by the stop function of the flat contact portion.

[0238] In the present embodiment, Roh rear sheet 64 forming each standing cuff is desirably substantially impervious not liquid permeable (or at HanTorueki property). Also, but it may also be such that the nature of repelling liquid by silicon processing on the topsheet (nonwoven laminate) of the present invention. Anyway, Bruno rear seat 64 and the back sheet 12A, it is breathable, respectively, and the barrier first sheet 64 and the back sheet 12A, respectively Thus water pressure lOOmmH

Is a 2 o or more sheets of is preferred. Yotsute thereto, will show a passing temper in the width direction sides of the product, it can prevent stuffiness of the wearer.

[0239] Otherwise, for example, for the materials used, etc. of each part, is the same as in the foregoing underpants type disposable diaper, dare omitted. [0240] (Production method example of a disposable diaper)

Next, it describes the embodiment Nitsu of a method for manufacturing a disposable diaper according to the absorbent body production method of the present invention.

[0241] (manufacturing process of the absorbent element)

Figure 20 shows an example of a process of manufacturing the absorbent element 50 shown in FIG. 12 and FIG. 19 or the like. Upstream force to line also is supplied covering sheet 58, the holding sheet 80 is supplied if the following are provided holding sheet 80. This respect is the holding sheet 80, to secure the lower absorbent body 5 6B supplied after, leaving at you to applying an adhesive such as a hot melt adhesive having a pre-adhesive.

[0242] Continued, Te, product fiber drum unit 91 to the contact, the lower absorbent member 56B force intermittently covering sheet 58 or the holding formed by fiber stacking mixing pulp fibers 55 and superabsorbent polymer particles 54 Te It is supplied on the sheet 80. Thereafter, the lower layer absorber 56B is encased by covering sheet 58 by passing through the Sarah 92.

[0243] On the other hand, the intermediate sheet 40 is supplied, after the adhesive such as a hot melt adhesive applied to the upper surface of the intermediate sheet 40 from the nozzle 95, the upper surface of the intermediate sheet 40, and the upper layer absorbent body 56A , poorly absorbed filament aggregate 52Z formed by opening a tow 52Y is supplied and we paste. For more information on the spreading step will be described later. Instead of the present process, using a wide intermediate sheet 40 than the upper absorbent body 56A, after place the poorly absorbed filament aggregate 52Z in the intermediate sheet 40, both side portions of the intermediate sheet with Sara by wrapping folded on the upper surface of the poorly absorbed filament aggregate 52Z, it is possible to produce an absorbent element shown in Figure 13.

[0244] If the cause is contained superabsorbent polymer particles in the upper layer absorbent body 56A, prior to pasting down layer absorber 56B after the open 繊後, poorly absorbed Fuiramen preparative assembly by SAP feeder 90 superabsorbent polymer particles can be contained in 52Z. It will be described later examples of the SAP feeder 90.

[0245] Subsequently, poorly absorbed filament aggregate 52Z intermediate sheet 40 is bonded to the lower surface, the cutting attachment device 93 such as a slip cutter while being cut to length, the cutting flame absorption sex filament assemblies affixed to intermittently on the lower absorber 56B. This means, at a predetermined position on the lower absorbent body 56B which is conveyed at predetermined intervals, poorly absorbed filament assembly is cut is attached sequentially laminated.

In the 0246] illustrated embodiment, the front of the cutting attachment device 93, the lower intermediate sheet 40, but poorly absorbed Firame cement aggregate 52Z is ​​in the top, because it is folded back by a cutting attachment device 93, the absorbent element 50 the intermediate sheet 40 is on, becomes lower is poorly absorbed filament aggregate 52Z, the embodiment shown in FIG. 12. In contrast, if configured not wrap by cutting attachment device 93, it becomes similar to the form shown in Figure 14.

[0247] the lower absorbent member 56B affixed this upper layer absorbent body 56A is then divided in the conveying direction by a cutter device 9 4, it is a separate absorbent element 50.

[0248] (in the case of the pants-type disposable diaper)

Next, the case of the pants-type disposable diaper, as shown in FIG. 21, the components and the topsheet 30 of the barrier Ichiriki Hus 60 from above, downward force is also liquid-impervious sheet 70 are supplied. Here, the supply line of Roh rear sheet 64 constituting the Roh Riyakafusu 60, advance, rubber thread 62 is under extension, and a second liquid impervious sheet 72 is fixed by a not-shown device between two non-woven fabrics supply in the state is made a, it is supplied to the main line with the topsheet 30. Components Roh Riyakafusu 60 which is supplied to the main line, the topsheet 30 and the liquid impermeable sheet 70, into the shape shown in FIG. 12 or the like, folded by Sara 96 ​​is na is.

[0249] Then, it is cut by the cutter unit 98, a rectangular absorbent body 20 in the longitudinal direction along the conveying direction is obtained. The resulting absorbent body 20 in the longitudinal direction of the absorbent body 2 0 is turn 90 degrees so as to be perpendicular to the line by turning device 100.

[0250] On the other hand, in the line of the exterior sheet 12, the flow in advance rubber thread 12C is interposed between two nonwoven fabric sheet (not shown) state, and a cutter to form a leg portion (not shown) hollowed oval manner, reaches the combining station 102, on its and is installed turning already absorbent body 20 between chestnut punching site are fixed by a hot-melt adhesive, the outer sheet 12 It is coupled. Then, folded up and down by a horizontal line as a boundary, the bonding region 12A of the side portions of the front body 12F and a back body 12B of the exterior sheet 12 are bonded by thermal fusion. Then divided in a line direction (dividing means is not shown) individual products are obtained. [0251] (in the case of disposable diapers of the tape-type)

On the other hand, FIG. 22 shows an example of a method of manufacturing the tape-type disposable diaper shown in FIGS. 18 and 19. Until obtaining a separate absorbent element 50 is similar to the case of the pants-type. For this individual absorbent elements, the topsheet 30 from above, downward force is also liquid-impermeable sheet 7 0 is supplied, Roh rear sheet 64 which then constitutes the Roh Riyakafusu 60 is subjected fed. The supply line Roh rear sheet 64, previously, supplied in a state where the rubber thread 62 is fixed under decompression is performed by a not-shown device between two nonwoven fabric. In the last line, the semi-product comprising an absorbent body is divided by the cutter device 98, Ru product 10 is obtained.

[0252] (opening)

Spreading step can be carried out, for example, depending on the form of the line shown in Figure 23. That is, the tow 52Y is withdrawn from the bale 52X, while being stepwise widened through the widening device 120 first Yuffu ° 126A, through the second Yuffu ° 126B, and the third Yuffu ° 126C, guiding the 拡厚 110 power is, where it is expanded thickness, after being an aggregate 52Z substantially final filament, on the superabsorbent polymer particles 54 are sprayed supplied by the high-absorbent polymer sprinkling means 90, accordingly after being fed to the Serra 92. Drawer tows from bale 52X is first--up 126A - and the like are performed by pulling by (drive corresponding to Ppuroru).

[0253] Characteristically, tow 52Y drawn from bale 52X, due turn portion 122 after the angle ging is performed, rotatably configured of a pair - Ppuroru force also free - of Ppuro Lumpur 124 - through-up, and summer as drawn by first--up 126A. In Ppuroru 124 later - in the configuration like this, the free - (determined in accordance with the nips pressure or roll dead weight) transfer resistance Ppuroru 124 there was force also acts as a brake to restrain the retraction speed of the tow 52Y, pretending one tension becomes stable. This free - rotation of Ppuro Lumpur 124 is due to be adapted to occur only in the passage of the tow.

[0254] Free - Ppuroru 124 --up pressure and its own weight may be appropriately determined, usually, nips pressure was sigma preferred not more than OMPa super 5 MPa, roll own weight, roll one preferably equal to or less than this per Okg ultra-10kg. Within this range, it is possible to easily realize the stabilization of tension.

[0255] and Chikarabe, now supply amount of tow 52Y for first--up 126A governing the supply of tow is stable, the size of the absorber, the weight, the quality becomes stable with.

[0256] Also, tow 52Y drawn from bale 52X has bale 52X and free - between Ppuroru 12 4, free - between Ppuroru 124 and the first--up 126A, first and second 1--up 126A 2-Tsu between flop 126B, as well as the widening device 120 respectively provided between the first 2-up 126B and the 3-up 126C, is widened in stages to the desired width. In this case, it is possible to expand in the thickness direction together.

[0257] FIGS. 24 and 25 show an example 120 of a widening device. The widening device 120 includes a rectangular tube-like passage 120A having a predetermined width X through the tow, and a spout 120B of the passage 120 A compressed air which is formed on the surface along the width direction of the inner surface, the passage 120A to by the force of compressed air tow 52 gamma introduced is to widen the passage full width. The height of the passage is equal to or greater than the thickness of the tow 52Y introduced, is higher than the thickness of the tow 52Y is tow 52Y is expanded in the thickness direction.

[0258] spout 120B, as shown in FIG. 25, shaped torque to position the toe passes through the downstream side toward the widthwise center of and passage 120A forms a line symmetry with respect to the width direction center of the passage 120A (or V-shape) is a slit, Ru.

[0259] In a state where such a slit 120B force also jetted air, enters Then the tow passage 120A, even entry position is deviated widthwise center force, tow 52Y undergoes a well-balanced force of compressed air He fled to the width direction center side (the arrow direction in FIG. 22) as the toe 5 2Y is guided in the width direction center of the passage 120A naturally. That is, become possible centering of the position of the introduction of the toe 52Y and take advantage of the compressed air for the widening. Further, in this embodiment, it is to guide the tow 52Y in a non-contact, Te of the ratio base to guide the contact as such a guide member, both advantages hardly occurs pain and collapse of the toe. Also, the widening device 120 having such a centering function, also exhibit the correction function of the transfer position not only centering in the widening.

[0260] When performing centering utilizing compressed air as described above, not limited to the shape of the slit-shaped foil, toward the widthwise center of and passage 120A forms a line symmetry with respect to the width direction center of the passage 120A As long as satisfying the condition that is located on the toe passes through the downstream side, it can be formed curve shape, an arc shape or the like.

[0261] On the other hand, between the first--up 126A and the 2-up 126B, the toe 52Y and tension is applied to tensioning, and the 2--up 126B Conversely tert- between-up 126C as is relaxed, the - peripheral speed of Ppuroru is set. As a result, first--up 126A and that tension is applied to the tow 52Y between the first 2-up 126B, such entanglement of the filaments each other are forcibly removed to some extent, the separation of the filaments is promoted Rutoto Moni, by widening the tow 52Y by widening apparatus 120 in association with this separation, which enables further uniform widening of the toe 52Y. Further, while performing relaxation tow 52Y between the first 2-up 126B and the 3-up 126C, by widening the tow 52Y by widening device 120, it can be further uniform widening of tows 52 Y It becomes, Ru.

In a preferred form than [0262], one of the rollers of the second--up 126B has a groove continuously at a short distance in the longitudinal direction in the circumferential direction are formed a number. The groove filaments that enters the number of the groove, has the ability to promote the loosened tow. Furthermore, in this case, in order to enhance the effect of the grooves, the 2-Tsu increases the embracing angle of the toe 52Y (rotational direction angle of the toe contacting portion) at one grooved roller of flop 126B, toe 52Y and grooved rollers the size Kusuru the contact area between is also preferable. Specifically, the 2--up 126B angle between the upstream side of the toe 52Y and the lower stream side of the toe 52Y, i.e. turning angle by the grooved rollers is less than 180 degrees, (smaller than 90 degrees) particularly acute preferably it is configured to be.

[0263] In addition, first--up 126A, second--up 126B and the 3-up 126C, the combination of the diameter of the roll of the pair may be different, but in that case, the peripheral speed difference since the contact resistance such as force tow width direction of the tension and roll and toe 52Y exerted to the toe 5 2Y between rolls may become nonuniform, that is configured to all common favored U,.

[0264] Next, the tow passing through the first 3-up 126C is guided to 拡厚 device 110.拡厚 device 110 is, for example, a structure similar to that disclosed in Japanese 59-500422 discloses (WO 83/03267), as is schematically shown in FIG. 26, the inlet 110A and outlet 110B those having Benchiyuri together with part 110b is formed, Rutotomoni includes a blowing inlet 110a of pressure on the inlet side, the exhaust hole 110c of the air to a part Benchiyuri 110b between. A substantially rectangular in plan view, a flat shape in a direction penetrating the paper surface of FIG. 26.

[0265] by blowing compressed air from the blowing port 110a, it enters the air from the inlet 1 10A by Ejekuta one effect, as a result, tow 52Y is pulled forward force is applied. When bets © 52Y reaches the part Benchiyuri 110b, carried out exhaust from the air exhaust holes 110c, one force, in order to space the part 110b expands Benchiyuri mainly bulk tow 52Y is increased in the thickness direction , it is enlarged in thickness. Incidentally, the width of the passages, by greater than the width of the tow 52Y introduced, it is also possible widening as illustrated below in FIG. 26. It is possible to perform the opening of the toe to Chikarabe.

[0266] (SAP supply device)

The SAP feeder 90, which substantially dispersed throughout the thickness direction of the high-absorbent polymer particles with respect to the filament current 52Z coalescence preferred. Such a superabsorbent polymer sprinkling means 90, not only its own weight by falling force of the superabsorbent polymer particles themselves, means for applying an acceleration force is desirable. The example shown in FIG. 27. In other words, it is configured to rotate the drum 90b having a projection hole 90d in the casing 90a having an opening at the bottom is rotated in the direction of movement of the web (counterclockwise direction in FIG. 27), internal to the shirt motor drum 90c is provided that It was those. Projecting portion 90A that these and elements are connected to the hopper for storing the high-absorbent polymer particles, the superabsorbent polymer particles 54 of the hopper force is configured to be supplied into the rotary drum 90b! , Ru.

[0267] In this SAP feeder in advance with respect to the opening position of the casing 90a, the position adjustment of the opening of the shirt motor drum 9 Oc is performed. Is shown fully matched fully open state of FIG. 27. Further, the projection hole 90d of the rotary drum 90b, as a group are divided in the circumferential direction, in the illustrated divided as four groups in the circumferential direction, thus in the course of rotating the rotary drum 90b guard in the illustrated, four sheets Diapers It is as spraying 'projects superabsorbent polymer particles against.

[0268] The high-absorbent polymer particles 54 on the assembly of filaments 52 may be continuously sprayed 'projection, but the absorption element 50 is divided in the line direction by a cutter device 94, a separate absorbent element 5 0 when, the cutter blade 94 is worn away in a short time due to the presence of the superabsorbent polymer particles 54. Therefore, continuously sprinkled superabsorbent polymer particles 54 'Runode be projected Nag as shown in FIG. 27, intermittently sprayed only to the zone Z' it is desirable to be projected.

[0269] For this, as described above, the projection hole 90d of the rotary drum 90b, as the divided groups in a circumferential direction, by in the illustrated form is divided as four groups in the circumferential direction, the superabsorbent poly mer particles 54 zone Z only is the are to be intermittently sprayed 'projection. As a result, the zone Z, can divide by a cutter device 94 between Z, it can be suppressed wear of the blade of the cutter device 94.

[0270] In addition, application rate of the superabsorbent polymer particles are mainly large and small pore size of the projection hole 90d, can be adjusted by the position adjustment of the opening of the shirt motor drum 90c for opening position of the casings 90a, the speed of the processing line may the location of the openings to follow suit. Also, spray pattern of superabsorbent polymer particles, kills the regulation by the arrangement of the divided projection hole 90d group.

[0271] On the other hand, if necessary, together with the pressure air superabsorbent polymer particles 54, by spraying 'projected onto the assembly of filaments 52, substantially the superabsorbent polymer particles child for a set of filaments it is also possible to disperse throughout the thickness direction. However, high-absorbent polymer particles were dispersed 'projected onto the aggregate of the filaments 52, scattered by compressed air, which may be sprayed outside Jo Tokoro region.

[0272] Furthermore, the SAP feeder 90, or instead of this, the high-absorbent polymer particles 54 that are sprayed onto the aggregate of filaments from below the assembly of filaments, it may be due Unishi for sucking.

[0273] It is also possible to use instead of the SAP feeder 90 to apply a centrifugal force described above, simply generic SAP feeder of the type to drop by its own weight superabsorbent polymer particles.

[0274] <Third Embodiment relates to the invention of claim 17 to 27, wherein>

(Pants-type use, examples of discarded diapers)

[0275] Figure 28 shows an example of a pants-type disposable diaper is illustrated. The pants-type disposable diaper 10 includes an absorbent body 20 of the outer surface (back surface) side of the outer sheet 12 and the inner surface (surface) side, the absorbent body 20 is fixed to the outer sheet 12. The absorbent body 20 (in the sanitary napkin described below menstrual blood) liquid such as urine Ya soft flight is a portion for holding absorbed receiving the. The outer sheet 12 is a part for attachment to the wearer.

[0276] outer sheet 12 becomes a hourglass shape as shown for example, both sides have constricted here is the site to put the wearer's legs. The absorbent body 20 may have any shape

, It is of a rectangle in the illustrated arrangement.

[0277] outer sheet 12, as shown in FIG. 29, after the absorbent body 20 is fixed which is provided at a predetermined position, is folded back and forth, both sides of the front body 12F and a back body 12B of the exterior sheet 12 junction region 12A of is bonded by thermal fusion. Yotsute thereto, the structure shown in FIG. 28, a pants-type disposable diaper having a waist opening WO and a pair of spreader openings LO is obtained.

[0278] (vertical direction. Is also the longitudinal direction of the product. I.e. Figure 29) intermediate of the width of the longitudinal direction of the illustrated absorbent body 20 is shorter form than the width connecting the constricted portion of the outer sheet 12 is shown It is. The relationship between the width may be reversed, or the same width.

[0279] outer sheet 12 preferably consists of two sheets, for example, water-repellent nonwoven fabric, with intervening resilient and elastic members between these sheets, forms states to fit the wearer due to the shrinkage force is desirable. As the resilient and elastic members, but a like strip of rubber thread or elastic foam can be used, to use a large number of rubber thread desirable. In the embodiment shown, the rubber thread 12C, 12C ... are continuously provided in the width direction in waist region W, In its your waist area under U provided only on both side portions, provided in the crotch region L Absent. Rubber thread 1 2C, 12C ... is, that are provided on both the waist region W and hip region under U, even contractile force of Itogo arm 12C itself is weak, even wearer in the waist area under U as a whole since the strike, the product is suitable to fit the wearer.

[0280] (absorbent body)

The absorbent body 20 of the embodiment, as shown in FIG. 30, and a top sheet 30 which is also the force, for example non-woven fabric to transmit liquid, the intermediate sheet (second sheet) 40 and the absorbent element 50. Further, on the back side of the absorbent body 56 a liquid impervious over sheet 70 which is also a force such as a plastic sheet is provided. Outer sheet 12 is provided on the back surface side of the liquid impervious sheet 70. Moreover, a barrier Ichiriki Hus 60, 60 on both sides. [0281] (top sheet)

The topsheet 30 has a property of transmitting liquid. Thus, the topsheet 30 material is sufficient as long as it expresses the liquid-permeable, for example, nonwoven fabric or perforated or non-perforated, and the like can be exemplified porous plastic sheet. Further, these nonwoven fabric, whether the raw material fibers is what is not particularly limited. For example, Orefin system such as polyethylene and polypropylene, polyester, synthetic fibers polyamide or the like, regenerated fibers such as rayon Ya cupra, etc., natural fibers such as cotton, etc. mixed fibers of two or more are used it can be exemplified. Furthermore, the nonwoven fabric may be one produced by any mosquitoes 卩 E. As the processing method, known methods, for example, spun lace method, Supanbo command method, thermal bonding method, melt blown method, it is possible to illustrate the needle punching or the like. For example, flexibility, as long as obtaining the drapability, span lace method is bulky, as long as obtaining the softness, thermal bond method is a preferable processing method.

[0282] Further, the topsheet 30 may be made of a single sheet, or may be a laminated sheet obtained by combined Ri bonded two or more sheets. Similarly, the topsheet 30, with respect to a flat surface direction, be made of one sheet, it may be composed of two or more sheets.

[0283] (intermediate sheet)

To transition to quickly absorb body liquid having passed through the top sheet 30, it is the this to provide an intermediate sheet 40 that permeation rate of liquid from the topsheet 3 0 are referred to as fast ,, normal "second sheet". The intermediate sheet prevents the "back" phenomenon from the absorber of the absorbed liquid Nag in Chikarari if increasing the absorbing performance due to absorption body is shifted a liquid to the rapidly absorber always dry topsheet 30 above it can be a state.

[0284] The intermediate sheet 40, may be exemplified and similar material as the topsheet 30, spunlaced, pulp nonwoven fabric, mixing of the pulp and rayon sheets, a point-bonded or crepe paper. An air-through nonwoven fabric and spunbonded nonwoven fabric especially preferred.

[0285] intermediate sheet (second sheet) 40 is interposed between the topsheet 30 and the covering sheet 58. As shown in FIG. 32, forms without the intermediate sheet (second sheet) 40 is also available. Although not shown, it may be disposed between the covering sheet 58 and the absorbent body 56. [0286] intermediate sheet 40 in the illustrated embodiment, are disposed in the center shorter than the width of the absorbent body 56 may be provided over the entire width. Longitudinal length of the intermediate sheet 40, by any same as the length of the absorbent body 56, and a short centered on the area for receiving the liquid, even within the length range. Typical materials of the intermediate sheet 40 is a nonwoven fabric excellent in transparency of the liquid.

[0287] (liquid-impermeable sheet)

Liquid impervious sheet 70 is a sheet that is disposed on the back side of the absorbent body 56. Liquid impermeable sheet is the material is not particularly limited, for example, and Orefin system 榭脂 such as polyethylene and polyps propylene, Ramine bets nonwoven fabric laminated nonwoven polyethylene sheet or the like, is interposed waterproof film substantially nonwoven fabric while ensuring liquid-impervious Te (in this case, a liquid-impermeable sheet and the waterproof film and the nonwoven fabric is composed.) or the like can be used. Of course, the addition to, in recent years, can also be used materials having a liquid-impervious and moisture-permeable is used are preferred from the viewpoint of stuffiness prevention. The sheet material having the liquid-impermeable and moisture-permeable, for example, by kneading an inorganic filler in Orefin system 榭脂 such as polyethylene and polypropylene, after forming a sheet, uniaxially or biaxially stretching the microporous sheet obtained by can be exemplified.

[0288] liquid-impermeable sheet 70, in order to prevent the so-called lateral leakage, the sides of the absorbent body 56 causes Ri written times to extend the use surface side (not shown) may be, for implementation in the embodiment, for the side leakage is prevented by interposing the second liquid impervious sheet 72 between the barrier first sheet 64 of the double forming the Bruno Riyakafusu 60. According to this embodiment, in Mashimashi second liquid impervious sheet 72 is rolled up standing Bas Riyakafusu 60! /, Runode, liquid or barrier Ichiriki Hus 60 diffused laterally transmitted a top sheet 30, lateral leakage of loose passage between 60 certain monkey 禾 lj tench in prevention.

[0289] (barrier one force Hus)

Hus barrier Ichiriki provided on both sides of the product 60, 60 is provided in order to prevent urine and loose passage to move laterally transmitted the topsheet 30 above, to prevent side leakage. In particular, in the third embodiment, since the expansion of the side portions of the crotch portion is prevented without reducing a substantial standing height Pariyakafusu, lowering of blocking amount, the follow-up performance to the body surface because reduction is unlikely to occur, preferably includes a Bruno Riyakafusu 60, 60. However, Bruno Riyakafusu since a Tsukeka 卩的 elements, can of course be omitted.

[0290] The depicted Roh Riyakafusu 60 is obtained by forming a water-repellent nonwoven fabric sheet in the double over the folding portion downward of the top sheet 30 from the back side of the absorbent body 56, to protrude to the surface side It is formed so as to!, Ru. To prevent urine moving laterally transmitted the topsheet 30 above, in particular, the sides of the liquid-impermeable sheet 70 is inserted between the double non-woven sheet, Roh Riyakafusu 60 projecting on the front side and it extends up to the middle.

[0291] In the example of the force shown it can be designed shape of the barrier Ichiriki Hus 60 itself appropriately, resilient and elastic members in the front end portion and the intermediate portion of the protruding portion of the barrier Ichiriki Hus 60, for example, rubber thread 62 Gasing Zhang fixed under, by its contraction force in the use state, Roh Riyakafusu 60 is turned so that to the upright. In relation rubber thread 62 of the intermediate portion is fixed to the front and rear end portions of the topsheet 30 to position closer to the center than the rubber threads 62, 62 of the tip portion, as shown in FIG. 30, the base of Roh Riyakafu scan 60 side is erected obliquely toward the center side, the tip portion than the intermediate portion is in the form of standing obliquely outwardly.

[0292] In particular, in the barrier Ichiriki Hus 60 shown in FIG. 30 or the like, to enhance the stretchability of the crotch portion, elongated elastic member thread rubber 63 or the like on the back side portion of the crotch portion side portions 56S of the absorbent body 56 Although but are fixed in a stretched state along the longitudinal direction, in the present invention because the stiffness increase of the crotch between the side portions 56S is suppressed even after absorption, elastic by rubber thread 63 is sufficiently exhibited, leg to you, good fit Te is obtained.

[0293] (embossing)

From the surface side of the topsheet 30 may be a recess E by embossing in the thickness direction. In this case, in addition to forming the concave portion E by embossing only top sheet 30, as shown in Figure 34, it may be formed laterally a recess E by embossing both the topsheet 30 and the intermediate sheet 40, the topsheet 30 or it can form a concave portion by embossing (not shown) as the surface side reaches a thickness direction partially or substantially the entire absorbent body 56. To form the recess E by embossing both the topsheet 30 and the intermediate sheet 40, it is an intermediate sheet 40, basis weight 8~40GZm 2, thickness 0. 2 to 1. 5 mm, the topsheet 30 as is the condition where the basis weight is 15 ~80gZm 2, does not inhibit the force liquid permeable in the range of thickness of 0. 2 to 3. 5 mm, desirability! / a point that allows sufficient embossing force卩E, . [0294] In addition, the absorption elements Nag and child forming recesses in Yogu more topsheet 30 and the intermediate sheet 40 also forms a recess that by only the embossed intermediate sheet 40 Nag possible to form a recess in the top sheet 30 it is a recess in the embossed only 56, the top sheet 30, only the absorber 58 Nag possible to form a recess in the intermediate sheet 40 and covering sheet 58 may be formed concave by E down boss.

[0295] recess E in the direction which extends, is effective to induce liquid spreading. Therefore, a is continuous recess E in a substantially groove-like (at a plurality of recesses spacing including when you form a single groove Nari column), the liquid, the surface-side layer before reaching the absorber comes to diffuse along the recess E, it becomes available to a broader portion of the absorbent body in the absorbent. Therefore, increasing the absorption capacity of the entire product is, leakage and back from the side which is based on the absorption capacity shortage becomes absorbent article had difficulty occurs.

[0296] On the other hand, although the absorbent body 56 made of tow tends to decrease rigidity as compared with conventional pulp was preferred since it is possible to increase the rigidity by forming the recess by embossed absorption absorbent body 56. Although not shown, in order to increase the stiffness of the absorption element 50, it is also preferable to form the recesses in the embossed in the thickness direction from the (opposite to the top sheet 30 side) back surface side of the absorbent body 56. To form a recess in the back surface side, the holding sheet 80, covering sheet 58, the liquid from the back side of the impermeable sheet 70 or the outer sheet 12, one body to embossing force 卩E so as to reach the absorbent body 56 it can be subjected. The recess of such back surface side is preferably formed together with the recess E of the surface side, it can be formed only recessed portion of the back surface side without forming the recess E of the surface side. When providing recesses on the front and back both sides, the form of the recesses may be Yogu also front and back differ also in Table back common.

[0297] recess in the embossed is effective to diffuse to induce liquid to the extending direction thereof. In addition there is also the effect of increasing the rigidity. Therefore, the form of the recess in the embossed it is desirable to determine and account for these effects. For example, recesses, others continuing to substantially groove-like (a plurality of recesses spaced including the case of forming a single groove Nari column), a plurality of recesses spacing emptied only by punctiform be those that are arranged may be. As the flat pattern, a groove-like or spot-like recess, the longitudinal direction, the width direction of the product, these combined grid-like, zigzag (a zigzag) which reciprocates in the width direction, or are randomly arranged as possible de be in the form or the like. Furthermore, the pin-like, Mt. shape, bellows shape or the like, can be adopted as appropriate forms.

[0298] (absorption element)

Absorbing element 50, an absorber 56 having a tow filament 52 opening a 52-... aggregate and super absorbent polymer one grain 54, 54, ..., at least the back surface and side surfaces of the absorbent body 56 and a covering sheet 58 wrapping. Moreover, the holding sheet 80 is provided between the back side portion of the absorbent body 56 and the covering sheet 58 (the portion of the lower side).

[0299] (a collection of filaments)

Absorbent body 56 has a collection of filaments 52 opening a tow, 52-.... Collection of the filaments 52, 52, ... is Ru der those opening a tow which is a bundle of substantially continuous filaments. The tow component fibers, for example, polysaccharides or derivatives thereof (cellulose, cellulose ester, chitin, chitosan, etc.), synthetic polymers (polyethylene, polypropylene, polyamide de, polyester, Borirakutaamido, poly Bulle acetate, etc.) and the like can Ru force particular, cellulose ester and cellulose are preferred.

[0300] The cellulose, cotton, linter, and cellulose and butter Terrier cellulose from plants such as wood pulp can be used, Yogu playback cellulose be regenerated cellulose such as rayon is a fiber spun also,.

[0301] Suitable employed may cellulose esters such as cellulose acetate, cellulose butyrate, organic acid esters such as cellulose propionate; cellulose § Se Tate propionate, cellulose acetate butyrate, cellulose acetate phthalate, mixed acid esters such as nitric acid cellulose acetate; and cellulose ester derivatives such as and poly force Purorata tons chart Toys spoon cellulose esters. These cellulose esters can be used alone or in combination of two or more kinds. The viscosity average polymerization degree of the cellulose ester, for example, 50 to 900, preferably Ru der about 200-800. The average degree of substitution of cellulose ester, for example, 1.5 to 3.0 (e.g., 2-3) is about.

[0302] The average degree of polymerization of the cellulose ester, for example 10 to 1000, preferably 50 to 900, and preferably, to about 200 to 800 to the al, average degree of substitution of the cellulose ester, for example, about 1 to 3 , preferably 1-2. 15, more preferably to a 1.1 to 2.0 mm. The average degree of substitution of the cellulose ester may be selected from the viewpoint of enhancing the biodegradability.

The [0303] Cellulose esters, organic acid esters (e.g., esters of organic acids of about 2 to 4 carbon atoms) is particularly suitable cellulose acetate. Degree of acetylation of cellulose acetate is often of the order of 43 to 62% is preferable because excellent in especially biodegradable and is about 30-50%. Particularly preferred cellulose esters are Serurosujiase Tate.

[0304] tow arrangement fibers, various additives, for example, thermal stabilizers, colorants, oil, yield improving agent, may contain a whiteness improving agent and the like.

[0305] The fineness of tow component fibers may be, for example, L~16dex, preferably 1~: LOdex, more preferably l~5dex is desirable. Tow constituent fibers may be non-crimped fibers but preferably crimped fibers. Wound degree of crimping of the crimped fibers, for example, 5 to 75 per inch, preferably 10 to 50, even more preferably, to 15 to 50 or so. Also, in many cases to use a uniformly crimped fibers. With crimped fibers, it is possible to manufacture a bulky and lightweight absorbent, it can be easily manufactured with high integrity tow by entanglement between fibers. Sectional shape DOO © constituent fibers are not particularly limited, for example, a circular, elliptical, irregular (e.g., Y-shaped, X-shaped, I-shaped, R-shaped, etc.) in any such or hollow it may be. Tow constituent fibers, for example, 3, 000-1, 000, 000 present, preferably <5, 000-1, 000, 000 present extent of tow formed by bundling monofilaments (fiber bundle) it can be used in the form. Fiber bundles 3, 000-1, 000, 000 present about the favored arbitrariness to configure focuses the continuous fibers.

[0306] Deng, tangled if! / Between the fibers, but weak!, Since the purpose of mainly maintaining the shape, it is possible to use a binder having an action of bonding or fusing the contact portion of the fiber. The Noinda one, Toriasechin, triethylene glycol diacetate, triethylene glycol dipropionate, dibutyl phthalate, dimethoxy E chill phthalate, other ester-based plasticizers such as Kuen acid Toryechi glycol ester, various 榭脂 adhesives, particularly thermoplastic 榭it can be used fat.

[0307] The thermoplastic 榭脂 used as a binder, the adhesive strength is 榭脂 expressed are water-insoluble or sparingly water-soluble 榭脂, and water-soluble 榭脂 is by melt 'solidified. The water-insoluble or sparingly water-soluble 榭脂 and a water-soluble 榭脂, may be used in combination as needed.

[0308] Examples of the water-insoluble or sparingly water-soluble 榭脂, for example, polyethylene, polypropylene, E styrene propylene copolymer, Orefin system of homopolymers or copolymers such as ethylene acetate Bulle copolymer, polyvinyl acetate Bulle, polymethacrylic acid methyl, methacrylate Mechirua acrylic acid ester copolymer, (meth) acrylic 榭脂 such copolymerizing polymers of acrylic monomer and a styrene monomer, polyvinyl chloride, acetate Bulle Ichishioi匕 Bulle copolymers, polystyrene , styrene emissions based polymers such as copolymers of styrene monomer and (meth) acrylic monomer, modified which may be polyester, nylon 11, nylon 12, nylon 610, a polyamide such as nylon 612, rosin derivatives ( For example, rosin esters), coal hydrogen 榭脂 (e.g., terpenes 榭脂 Dicyclopentadiene 榭脂, petroleum 榭脂), such as hydrogen added hydrocarbon 榭脂 can be used. These thermoplastic 榭脂 may be used singly or in combination.

The [0309] water-soluble 榭脂, various water-soluble polymers, such as poly Bulle alcohol, polyvinyl - having Rupiroridon, poly Bulle ether, and Bulle monomer, a carboxyl group, a sulfonic acid group or their salts water-soluble vinyl 榭 fat and a copolymer of a copolymerizable monomer can be used acrylic-based water-soluble 榭脂, polyalkylene oxide, water soluble polyester, water-soluble polyamide. These water-soluble 榭脂 may be used in combination of two or more kinds together to be able to use alone.

[0310] The thermoplastic 榭脂 include antioxidants, stabilizers such as ultraviolet absorbers, fillers, plasticizers, preservatives, may be added various additives such as fungicides.

[0311] However, as far as possible, it should be avoided the use of a binder component that inhibits the entry of superabsorbent polymer particles. Binder component that inhibits the invasion of high-absorbent polymer particles is best not to use.

[0312] The tow are not detailed it can be manufactured by a known method. Suitably tow bale of cellulose diacetate that can be used in the absorbent element 50, Serra - marketed by such Ichizusha Ya Daicel Chemical Industries. Tow bale of cellulose diacetate, the density is from about 0. 5 gZcm 3, the total weight is 400~600Kg. [0313] From this bale, peeled off tow is opened to a wide band so as to have a desired size, bulk. Open 繊幅 tow is arbitrary, for example, the width 100 to 2000 mm, preferably to a 100~300mm about the width of the suction absorbent body of the product. Further, by adjusting the fit opening fineness of tow, it is possible to adjust the density of the absorbent body.

[0314] The open 繊方 method of tow, for example, tow passes around a plurality of opening rolls, a method of opening by gradually expanding the width of the tow with the progress of tow tension tow and (elongation) how to spread repeatedly and relaxation (contraction), a method of widening, opening with compressed air can be used.

[0315] (high-absorbent polymer particles)

Absorbent body 56 has high-absorbent polymer particles 54, 54, .... The superabsorbent polymer particles 5 4, is meant to include "powder" in addition to "particles". The particle size of the superabsorbent polymer particles 54, those used in the absorbent articles of this kind can be used as it is, 100~1000 / ζ πι, those 150~400 / ζ πι especially desirable. Undesirably be increased scattering loss in Rutotomoni production line for easily moving the absorbent body 56 and the particle size is too small. Further, the particle size is too large, it becomes prominently feel that gravel gravel, which may lower the commercial value. As the material of the superabsorbent polymer particles, the force absorption amount of water can be used without particular limitation is suitably more than 60GZg. The high-absorbent polymer particles may be based on starch and cellulose-based and synthetic polymer-based, starch acrylic acid (salt) cod shift copolymer, starch - Keni 匕物 acrylonitrile copolymer, sodium carboxymethyl cellulose cross-linked, acrylic acid (salt) can be used, such as polymers. A shape of the high-absorbent polymer particles, can be used as those typical granular material like used is preferably der Ru force other shapes.

[0316] As high-absorbent polymer particles 54, those water absorption speed power 0 seconds Ru preferably used. If water absorption rate exceeds 40 seconds, the liquid supplied to the absorber tends to occur the output and Mau-called back to return to the absorption body.

[0317] As the high-absorbent polymer particles 54, those gel strength of more than lOOOPa is preferably used. Accordingly, even when a bulky absorbent by using a tow, can be effectively suppressed feeling regarding the base after liquid absorption. Basis weight of the [0318] high-absorbent polymer particles 54 may be suitably determined according to the absorption amount required in applications of the absorber. Thus can not be said sweepingly, it can be a 50~350GZm 2 the average of the entire absorbent element 50. Prevented by the basis weight of the polymer and 50GZm 2 or more, the absorption capacity of the polymer, Toucas also obtained by adopting a set of filaments comprising, from thin 'weight I spoon effect is "to be exhibited it can. Beyond 3 50gZm 2, excess effect of the superabsorbent polymer particles Nag saturated Surubaryokuri more, will provide a texture that is gritty.

[0319] (size of the absorber 'weight)

On the other hand, the size of the absorbent body 56 is a plan projected area force OOcm 2 or more, and is. 1 to 10 mm thick, particularly preferably L~5mm. When the size of the absorber is within this range, in order to improve the resilience without Kitasa weight and thickness, an increase in cost, which is very advantageous. The weight of the absorbent body 25g or less, preferably configured to particularly from 10 to 20 g. When in the absorber weight force S in this range of advantages of not using a dedicated member it is particularly remarkable.

[0320] (compression characteristics of the absorber)

Compression resilience RC of the absorbent body 56 has preferably that 40 to 60%, particularly 50% to 60%. This makes it possible to exhibit sufficient resilience in absorbent itself.

[0321] Further, the compression energy WC of absorbent body 56 4. 0 to:. LO If it is Ogf 'cmZcm 2, preferred because the may be compressed into a compact with the conventional the same level or higher during packaging.

[0322] These compression characteristics, the adjustment of the fiber density of the aggregates of filaments by open 繊等, selection of fiber material, adjustment of the degree of selection 'processing type binder such as a plasticizer, a combination of or child these It can be adjusted by the like.

[0323] Here, the compression energy (WC) has a length of 200 mm, the test piece was cut into 50mm wide central portion of the (hold sheets), the energy consumption for pushing up 50 g.

[0324] The compression energy, depending on handy compression tester (KES- G5, manufactured by Kato Tech Co., Ltd.), can be measured. Measurement conditions in the case of this testing machine, SENS: 2, the force meter Type: lkg, SPEED RANGE: STD, DEF sensitivity: 20, pressurized area: 2 cm 2, taken write interval: 0.1 (standard), STROKE SET: 5. 0, maximum load: a 50gfZcm 2.

[0325] On the other hand, compression resilience and (RC) is a parameter one data representing the recovery when the fibers are compressed. Therefore, If you're recovery, compression resilience is increased. This compression Les Jiriensu can by handy compression tester (KE s-G5, manufactured by Kato Tech Co., Ltd.), is measured. Measurement conditions in the case of this tester are the same as those of the compression energy.

[0326] (covering sheet)

The covering sheet 58 can be used tissue paper, particularly crepe paper, nonwoven fabric, Porirami nonwoven fabric, a sheet or the like small holes opened. However, it is preferably a sheet of superabsorbent polymer particles does not appear only disconnect. When using the non-woven fabric instead of crepe paper, of the parent aqueous SMMS (spunbond Z meltblown Z meltblown Z spunbond) nonwoven fabric is particularly preferred, the material is polypropylene, polyethylene z polypropylene can be used. Basis weight, 8~20g / m 2, desirably in particular of 10 to 15 g / m 2.

[0327] The covering sheet 58, as shown in FIG. 30, the filament 52, 52, ... aggregate and high-absorbent polymer particles 54, 54, intensification of the form of an envelope over the entire layer of ... of, for example, FIG. as shown in 31, only the rear surface and the side surface of that layer may be one encapsulating. Although not shown, covering ヽ covering only the upper surface and side surfaces of the absorbent body 56 in the crepe paper Ya nonwoven, form covering the lower surface with a liquid impervious over sheet such as polyethylene, the upper surface of the absorber 56 in the crepe paper Ya nonwoven, I also like form which covers the side surface and lower surface with a liquid impermeable sheet such as polyethylene, (each of these materials is a component of a covering sheet). If necessary, a layer of filaments 52, a collection of 52-... and Ko吸 Osamusei polymer particles 54, 54, ..., may be in a form to place only the form or the lower surface sandwiching a sheet of upper and lower layers.

[0328] (distribution, etc. of the superabsorbent polymer)

In the present invention, both side portions 56S of the crotch portion, and has a high-absorbent polymer particles 54, 54, ... in the main absorbent portion 56C is a portion other than the 56S, as compared to the main absorbent portion 56C, the crotch The inter sides 56S, 56S of basis weight of the superabsorbent polymer particles small, is a portion! / Ru ヽ. Crotch portion, front portion and rear portion of the crotch portion can be, for example, the middle when divided into three parts of absorbent body 56 in the longitudinal direction, front and rear. Both side portions 56S of the crotch portion may be a portion having a 5-40% of the width of the one side for instance the absorbent body 56 width.

[0329] Thus, in the present invention, both side portions 56S of the dispersion density is the main absorbent portion 56C and the crotch portion of the superabsorbent polymer particles 54, since the different between 56S, in the following, dense portions partial main absorbent portion 56C and good, also referred to as both sides 56S, low density portions 56S of the crotch.

[0330] The low-density portion 56S, the position of the 56S, size, shape may be appropriately determined within the scope of the present invention, for example, the front-rear direction position Shi preferable that a position straddling the longitudinal direction center line of the article ingredients dimensions length m is 50 to 300 mm, preferably a width n is 10 to 100 mm.

[0331] Further, the low density portion 56S, the shape of the 56S, shown in preferred instrument for example FIG. 29 to a portion surrounded by a line projecting in the longitudinal direction center side widthwise central side of the longitudinal opposite ends can or a shows Suyo a substantially trapezoidal portion or the portion surrounded by the substantially arc-shaped curve, or in FIG. 35 along the leg-like.

[0332] basis weight of the superabsorbent polymer particles 54 in the low-density portion 56S is Ki de be appropriately determined, for example, a fiber basis weight of the aggregate of filaments 52 and 30~300GZm 2, and the basis weight of the superabsorbent polymer particles 54 absorbent element 50 average 50~350GZm 2 and the case of the whole, preferably there is a 100 g / m 2 or less. In particular the low-density portion 56S is a like is not disposed superabsorbent polymer particles 54 during production, preferably in the configuration that is substantially free.

[0333] may be a high-absorbent polymer particles 54 unfixed, in which case the manufacture of the products, feed transportable, by the use, side portions 56S of the crotch portion, superabsorbent other sites for 56S polymer single particle 54 is moved, there is an effect fades fear. Thus, some or all of the superabsorbent polymer particles 54, preferably bonded to the aggregate and covering sheet 58 of the filament 52. Figure 45 is obtained by assuming that bonding the high-absorbent polymer particles 54 in the aggregate of filaments 52 through the adhesive HM. As the adhesive HM for fixing the high-absorbent polymer particles 54 can be suitably used a hot-melt adhesive. The curtain coating is preferred instrument coating amount as the coating method of the adhesive HM is preferably slightly wider than preferred tool application area is the main absorbent portion that is 2 to 15 g / m 2.

[0334] distribution of the superabsorbent polymer particles 54 in the thickness direction of the absorbent body 56 is not particularly limited, as shown in better force diagram 30 be provided on the rear surface side of the aggregate of the aggregate filament 52 rather than the body of the filament 52 the over substantially the entire thickness direction of the absorbent body 56, which high-absorbent polymer particles 54 are dispersed is desirable. The state of this substantially is dispersed throughout the thickness direction schematically illustrating a main part enlarged view of FIG. 30.

[0335] upper part of the absorbent body 56, the lower, and if the SAP particles are not, or at very or small quantity even in the middle section can not be said "are dispersed throughout the thickness direction". Thus, "are dispersed throughout the thickness direction", for a set of filaments 52, other forms of the thickness direction whole are "homogeneously" dispersed, "ubiquitous top, the bottom and or intermediate portion to have "is still the top, also includes the form dispersed in each part of the lower and middle portions. Moreover, and forms a part of SAP particles is left on the table surface without penetrating into the aggregate of filaments 52, 52, ..., part of the SAP particles filament filaments 52, 52, ... of the current forms in the holding sheet 80 on as shown in form and Figure 33 at the top covering sheet 58 passes through the coalescing is also not to be excluded.

[0336] (holding sheet)

On the back side or the skin surface side of the absorbent body 56 is preferably provided a holding sheet 80 for holding the high-absorbent polymer particles 54. As described above, the high-absorbent polymer particles 54, the distribution process until the time of manufacture or consumer to use the product can passed through the assembly of filaments 52, between the assembly and the covering sheet 58 of the filament 52 by such or through, it may travel within the absorbent body 56. Further, unevenness of the superabsorbent polymer particles may give gritty the uncomfortable feeling when the consumer touches by hand when used. Therefore, it is of interposing the holding sheet 80 to hold the absorbent polymer particles 54 on the back side or the skin face side of the absorbent body 56.

[0337] Incidentally, in FIG. 33, when the high-absorbent polymer particles provided below the absorbent body 56, superabsorbent polymer particles is stomach contained in absorbent body 56 is, consumers use the manufacturing force in stage in until a set of filaments 52 stamina also exits, conceptually it shows a case where gathered holding sheet 80 on.

[0338] holding sheet 80 is also provided only on the lower side of the absorbent body 56 as shown in FIG. 30 or the like, and as shown in FIG. 33, rolled up the sides of the absorbent body 56 to the upper surface of the street absorbent body 56 even if extended,. Illustrated it!, It may be disposed a holding sheet 80 between the skin side surface of the absorbent body 56 and the surface side portion of the covering sheet 58. It is also possible to use a holding sheet 80 a plurality Again. However, the holding sheet 80 is because it is intended to hold the polymer particles 54, if having envelope sheet over preparative 58, must not be outside the covering sheet 58, the absorber 56 and the envelope sheet 58 providing a holding sheet 80 between.

[0339] In particular, the structure can most effectively suppress the movement of the superabsorbent polymer particles, superabsorbent polymer particles 54 are unevenly distributed between the aggregate of the holding sheet 80 and the filament 52, a high intake Osamusei include a structure polymer particles 54 are fixed to one least of the holding sheet 80 and the filament assembly by adhesive HM.

[0340] Material of holding sheet 80 is not particularly limited, sufficient as long as shall to have a retention capacity of the absorbent polymer particles. Specifically, a nonwoven fabric, crimped pulp, low-absorbent cotton fibers (e.g., non-defatted cotton fibers, degreased cotton fibers, rayon fibers, such as those treated with a water repellent agent or sparse water agent.) , polyethylene fibers, polyester fibers, acrylic fibers, polypropylene fibers, silk, cotton, linen, nylon, polyurethane, other like acetate fibers, can also be used 榭脂 films or paper.

[0341] If the holding sheet 80 and the nonwoven fabric, its holding sheet 80, compression energy based on KES test is 0. 01~:. LO 00gfcm / cm 2, preferably, 0. 01~: L OOgfcm / cm 2 in, and the compression resilience from 10 to 100 percent, preferably, may is 70% to 100% of the nonwoven fabric.

[0342] In particular, the holding sheet 80 on to the high-absorbent polymer particles 54 is prevented from moving, and previously applied hot-melt adhesive or the like onto the holding sheet 80, holding the high-absorbent polymer particles 54 sheets It is preferable to adhere to 80.

[0343] The upper surface of the holding sheet 80 (Kochikara the Hare surface to use surface side) in rough or fuzzing surface and be Rukoto, it is possible to improve the retention capacity. The roughening or fuzz catheter technique for this, and the like marble force 卩Eya Burashinnguka 卩E.

[0344] Further, as shown in FIG. 46, it is also preferable to form a plurality of retaining holes 81 in the unevenness distribution on the holding sheet 80. Holding hole 81 be regularly arranged, or may be distribution irregularly. Holding hole 81 even recess hole does not penetrate the sheet 80, or may be a through hole. When having such a holding hole 81, by the high-absorbent polymer particles 54 are trapped in the holding hole 81, movement is prevented.

[0345] The number per preferred tool unit area in the range of 3 to 25 mm 2 as the opening area of the force holding hole 81 the size and number may be appropriately determined in the holding hole 81 is a 5,000 to 50,000 pieces Zm 2 preference is.

[0346] As the method of forming the retaining hole, as not dependent on sheet material - it can be given an Dorupanchikaro E Ya embossing force 卩E. Further, if the sheet is a nonwoven fabric, when the magnitude different aperture as a pattern of use in the production V, Ru mesh Ru with those arranged alternately in a planar direction, as shown in FIG. 46, the portion of the relatively large openings it is possible to manufacture a holding sheet 80 holding holes 81 of the hole shape is formed depression by.

[0347] When using the holding sheet having a holding hole, by arranging only the portion that overlaps the holding sheet holding hole formed on the entire main absorbent portion 56C, the main absorbent portion 56C force also crotch sides 56S, to 56S the movement of the superabsorbent polymer particles 54 can be efficiently suppressed. Also, Ru similarly der be formed retaining hole only in a portion that overlaps with the main absorbent portion 56C of the holding sheet 80.

[0348] (for the use of adhesives in the absorption body)

When adhering the superabsorbent polymer particles 54 by adhesive assembly and the holding sheet 80 of the filament 52, the adhesive crotch sides 56S, to be present 56S, rigidity by adhesive to the crotch portion increases there is a risk of damaging the fit. Therefore, as shown in FIG. 45, the adhesive HM for fixing the high-absorbent polymer particles 54 are preferably coated fabric only in the main absorbent portion 52C. While suppressing the adhesion of the movement of the superabsorbent polymer particles 54 hardly impair the fit of the crotch portion. Incidentally, the adhesive HM in this case, the main long as to absorb part 52C only the coating, be substantially applied to the entire of the main absorbent portion 52C, it may be applied to a part or.

[0349] (Other)

Although not shown, the components of the absorbent body 20, base data such as a hot melt adhesive, a bead, are fixed to each other such as by spiral or Summit coating.

[0350] (Example of a tape-type disposable diapers)

On the other hand, FIGS. 35 and 36 show an example of tape-type disposable diaper. Figure 36 is is shown slightly exaggerated for the force-absorbing body 20 is a 9 9 taken along line diagram in FIG. 35.

[0351] tape-type disposable diaper 10A has a fastening piece attached to the back side both ends of the diaper, which has a hook element on the fastening surface of the Fasuyungu pieces constituting the rear surface of the diaper the backsheet nonwoven laminate per the mounting of the diaper, is the hook elements of the Fasuyungu piece a diaper without engagable to any point of the surface of the backsheet.

[0352] The absorbent body 20 includes a topsheet 30, between the liquid impervious sheet 70, which is intended to the absorbent body 56 interposed. The absorbent body 56 is entirely wrapped with covering sheet 58 by Tissue Bae over path has a rectangular in plan view. Holding sheet 80 is provided between the absorber 56 and the envelope sheet 58.

[0353] Furthermore, between the topsheet 30 and the absorbent body 56, intermediate sheet 40 is interposed. Liquid impervious sheet 70 forms a wide rectangular than the absorbent body 56, a back sheet 12A made of hourglass-shaped nonwoven fabric is provided on its outside.

[0354] The topsheet 30 forms a wide rectangular than the absorbent body 56 extends slightly outward from the side edges of the absorbent body 56, it is fixed by such liquid-impervious sheet 70 and the hot-melt adhesive.

[0355] on both sides of the diaper is formed barrier Ichiriki Hus 60A protruding to the use surface side, the Roh Riyakafusu 60A includes a Bruno rear sheet 64 also nonwoven force continuously substantially widthwise, resilient and elastic member is made of, for example, a rubber thread 62 as an elastic stretchable member for a single or a plurality of leg comprising rubber thread force. 130 is a Fasuyungu piece by the surface fastener.

[0356] the inner surface of Roh rear sheet 64 has a fixed start end at a location spaced apart from the side edges of the topsheet 30, toward the extending edge of the fixed start mosquitoes also liquid impervious sheet 70, the width outward parts amount is fixed by a hot-melt adhesive. The outer surface of Roh rear sheet 64, the back sheet 12A at its lower surface is secured by a hot melt adhesive, Ru. Further, the gasket cuffs elastic extensible members, for example, rubber thread 66 is provided.

[0357] the inner surface of Roh rear sheet 64, the fixation starting edge to the liquid-impermeable sheet 70 forms a standing edge of Bruno Riyakafusu 60A. In around leg, inside the the upright edge is a free portion which is not fixed to the component, the free portion comes to the upright by contraction force of rubber thread 62.

[0358] In this example, the fastening piece 130, by using a surface fastener, to the back sheet 12 A, the mechanical - can fixed to the cull. Therefore, it is also possible to omit the so-called target tape, and can freely select the fixing position by Fasuyungu piece 130.

[0359] Fasuyungu piece 130 has a plastic, Porirami nonwoven, the base is a back sheet 12A of Fasuyungu substrate such as paper, for example, they are joined by an adhesive, a hook element 130A on the distal end side. Hook elements 130A are bonded by adhesive to Fasuyungu substrate. Hook elements 130A has a number of engagement pieces on its outer surface. Having a temporary fixing adhesive portion 130B from the hook elements 130 A distally. In assembling the end product, so as to prevent peeling of the previous end of Fasuyungu piece 130 by being adhered to the temporary stopper plate adhesive portion 130B force the barrier first sheet 64. In use, it peeled off against its adhesive power, but to bring the distal end side of the full Asuyungu piece 130 to the front body. Distal to the temporary fixing adhesive portion 130B is a knob tab portion exposed Fasuyungu substrate.

[0360] on the opening side of the front body is the inner surface of the Roh Kkushito 12A, the target printing sheet 74 is provided as a design sheet is a measure of the position of fastening hook elements 130A of Fasuyungu piece 130 design is made the target printed subjected, is subjected to visible from the outside through the backsheet 12 A, Ru.

[0361] diaper, when worn, since the diaper is attached to the body in a boat, and since contraction force of rubber thread 62 is exerted, at around legs, barrier Ichiriki Hus 60A is erected by contraction force of rubber thread 62 to.

[0362] a space surrounded by standing part forms a confinement space urine or loose passage. Once urination in this space, with its urine is absorbed into the absorbent body 56 through the topsheet 30, the solid soft flight min, the standing part of the Roh Riyakafusu 60A is barrier one next, the ride Yue For example it can be prevented. Should urine leaking sideways beyond the standing distal edge of the standing portion, side leakage is prevented by the stop function of the flat contact portion.

[0363] In the present embodiment, Roh rear sheet 64 forming each standing cuff is desirably substantially impervious not liquid permeable (or at HanTorueki property). Also, but it may also be such that the nature of repelling liquid by silicon processing on the topsheet (nonwoven laminate) of the present invention. Anyway, Bruno rear seat 64 and the back sheet 12A, it is breathable, respectively, and the barrier first sheet 64 and the back sheet 12A, respectively Thus water pressure lOOmmH

Is a 2 o or more sheets of is preferred. Yotsute thereto, will show a passing temper in the width direction sides of the product, it can prevent stuffiness of the wearer.

[0364] Otherwise, for example, for the materials used, etc. of each part, is the same as in the foregoing underpants type disposable diaper, dare omitted.

[0365] <example of a method of manufacturing the disposable diapers>

Next, description will be given of a manufacturing example of the above-described diapers. Example shown in FIG. 37 and FIG. 38, FIG. 28, that shows a manufacturing facility example of the disposable diaper of pants-type shown in FIGS. 29 and 33.

[0366] is supplied covering sheet 58 from the upstream side to the line, next, in the holding sheet 80 is supplied.

For this holding sheet 80, in order to prevent movement of superabsorbent polymer particles fed to the later can be applied to a hot-melt adhesive having a pre-adhesive. Adhesive applying device 104 for this purpose in FIG 8 is shown, Ru.

[0367] Then, formed by opening a tow (more spreading step as a later) assemblies 5 2Z is ​​upward force of filaments 52 also supplied, on its high by the high-absorbent polymer sprinkling means 90 absorbent polymer particles 54 are sprayed supplied. Thereafter, it wrapped by covering sheet 58 by passing the sailor 92, are the absorbent element 50. Next, is divided in the line direction by a cutter device 94, it is a separate absorbent element 50.

[0368] Furthermore, the intermediate sheet (second sheet) 40 is upward, short with respect to the absorption elements 50 total length in the embodiment! Since in structure and is intermittently supplied.

[0369] Then the components and the topsheet 30 forces the liquid from the lower impervious sheet 70 Roh Riyakafusu 60 from above are supplied. Here, the supply line of Roh Rya first sheet 64 constituting the Roh Riyakafusu 60 in advance in the rubber thread 62 is under extension between two non-woven fabrics by a not-shown device, and a second liquid impervious sheet 72 is fixed It has been made supplied in a state of being supplied to main line with the topsheet 30. Components Roh Riyakafusu 60 which is supplied to the main line, the topsheet 30 and the liquid impervious sheet 70, the shape shown in FIG. 33, the folding by Se la 96 is made.

At the end of [0370] of the absorbent body 20 lines, it is cut by the cutter unit 98, a rectangular absorbent body 20 which has along a longitudinal direction in the line is obtained.

[0371] The resulting absorbent body 20 in the longitudinal direction of the absorbent body 20 is turning 90 degrees so as to be perpendicular to the line by turning device 100.

[0372] On the other hand, in the line of the exterior sheet 12, the flow in advance between the two sheets of nonwoven fabric sheet rubber thread 12C is interposed (it is not shown in FIG. 37) state, and, to form a leg portion and because the cutter (not shown) hollowed out in an oval manner, when it reaches the combining station 102, on its and placed the absorbent body 20 turn already between sites coring is hot Tomeruto adhesive such as It is fixed by and combined with the outer sheet 12. Then, folded up and down the boundary of the horizontal line in FIG. 37, the junction region 12A of the side portions of the front body 12F and a back body 12B of the exterior sheet 12 are bonded by thermal fusion. Then divided in a line direction (dividing means is shown, Do,) to obtain an individual product.

[0373] spreading step can be carried out by embodiments of the line shown in FIG. 38 for example. That is, the tow 52Y is withdrawn from the bale 52X, while being stepwise widened through the widening device 120 first Yuffu ° 126A, through the second Yuffu ° 126B, and the third Yuffu ° 126C, guiding the 拡厚 110 power is, where it is expanded thickness, after being an aggregate 52Z substantially final filament, on the superabsorbent polymer particles 54 are sprayed supplied by the high-absorbent polymer sprinkling means 90, accordingly after being fed to the Serra 92. Drawer tows from bale 52X is first--up 126A - and the like are performed by pulling by (drive corresponding to Ppuroru).

[0374] That is, tow 52Y drawn from bale 52X, after changing angles is performed by the turn portion 122, rotatably configured of a pair - Ppuroru force becomes free - Ppuroru 124 - Tsu via flop , and summer as drawn by first--up 126A. In such a configuration, the free - (determined according to Epp pressure or roll dead weight) transfer resistance Ppuroru 124 there was force also acts as a brake to restrain the retraction speed of the tow 52Y, free - tension in Tsu Prowl 124 later stable It becomes the way. This is, free! - rotation of Ppuroru 1 24 is adapted to generate only at the passage of the tow /, is due to Rukoto. [0375] Free - Ppuroru 124 --up pressure and its own weight may be appropriately determined, usually, nips pressure was sigma preferred not more than OMPa super 5 MPa, roll own weight, roll one preferably equal to or less than this per Okg ultra-10kg. Within this range, it is possible to easily realize the stabilization of tension.

[0376] and Chikarabe, now supply amount of tow 52Y for first--up 126A governing the supply of tow is stable, the size of the absorber, the weight, the quality becomes stable with.

[0377] Also, tow 52Y drawn from bale 52X has bale 52X and free - between Ppuroru 12 4, free - between Ppuroru 124 and the first--up 126A, first and second 1--up 126A 2-Tsu between flop 126B, as well as the widening device 120 respectively provided between the first 2-up 126B and the 3-up 126C, is widened in stages to the desired width. In this case, it is possible to expand in the thickness direction together.

[0378] FIGS. 39 and 40 illustrates the widening device 120, a rectangular tube-like passage 120A having a predetermined width X through the tow, compressed air one formed on the surface along the width direction of the passage 120A inside surface and a jets 120B, is intended to widen more passages full width of the tow 52Y introduced into the passage 120A the force of compressed air. The height of the passage is the on thickness than the toe 52Y introduced, is higher than the thickness of the tow 52Y is tow 52Y is expanded in the thickness direction.

[0379] spout 120B, as shown in FIG. 40, shaped torque to position the toe passes through the downstream side toward the widthwise center of and passage 120A forms a line symmetry with respect to the width direction center of the passage 120A (or V-shape) is a slit, Ru.

[0380] In a state where such a slit 120B force also jetted air, enters Then the tow passage 120A, even entry position is deviated widthwise center force, tow 52Y undergoes a well-balanced force of compressed air He fled to the width direction center side (the arrow direction in FIG. 40) as the toe 5 2Y is guided in the width direction center of the passage 120A naturally. That is, become possible centering of the position of the introduction of the toe 52Y and take advantage of the compressed air for the widening. Further, in this embodiment, it is to guide the tow 52Y in a non-contact, Te of the ratio base to guide the contact as such a guide member, both advantages hardly occurs pain and collapse of the toe. Also, the widening device 120 having such a centering function, also exhibit the correction function of the transfer position not only centering in the widening.

[0381] When performing centering utilizing compressed air as described above, not limited to the shape of the slit-shaped foil, toward the widthwise center of and passage 120A forms a line symmetry with respect to the width direction center of the passage 120A As long as satisfying the condition that is located on the toe passes through the downstream side, it can be formed curve shape, an arc shape or the like.

[0382] On the other hand, between the first--up 126A and the 2-up 126B, the toe 52Y and tension is applied to tensioning, and the 2--up 126B Conversely tert- between-up 126C as is relaxed, the - peripheral speed of Ppuroru is set. As a result, first--up 126A and that tension is applied to the tow 52Y between the first 2-up 126B, such entanglement of the filaments each other are forcibly removed to some extent, the separation of the filaments is promoted Rutoto Moni, by widening the tow 52Y by widening apparatus 120 in association with this separation, which enables further uniform widening of the toe 52Y. Further, while performing relaxation tow 52Y between the first 2-up 126B and the 3-up 126C, by widening the tow 52Y by widening device 120, it can be further uniform widening of tows 52 Y It becomes, Ru.

In a preferred form than [0383], one of the rollers of the second--up 126B has a groove continuously at a short distance in the longitudinal direction in the circumferential direction are formed a number. The groove filaments that enters the number of the groove, has the ability to promote the loosened tow. Furthermore, in this case, in order to enhance the effect of the grooves, the 2-Tsu increases the embracing angle of the toe 52Y (rotational direction angle of the toe contacting portion) at one grooved roller of flop 126B, toe 52Y and grooved rollers the size Kusuru the contact area between is also preferable. Specifically, the 2--up 126B angle between the upstream side of the toe 52Y and the lower stream side of the toe 52Y, i.e. turning angle by the grooved rollers is less than 180 degrees, (smaller than 90 degrees) particularly acute preferably it is configured to be.

[0384] In addition, first--up 126A, second--up 126B and the 3-up 126C, the combination of the diameter of the roll of the pair may be different, but in that case, the peripheral speed difference since the contact resistance such as force tow width direction of the tension and roll and toe 52Y exerted to the toe 5 2Y between rolls may become nonuniform, that is configured to all common favored U,.

[0385] Next, the tow passing through the first 3-up 126C is guided to 拡厚 device 110.拡厚 device 110 is, for example, a structure similar to that disclosed in Japanese 59-500422 discloses (WO 83/03267), is schematically shown in FIG. 41, the inlet 110A and outlet 110B those having Benchiyuri together with part 110b is formed, Rutotomoni includes a blowing inlet 110a of pressure on the inlet side, the exhaust hole 110c of the air to a part Benchiyuri 110b between. A substantially rectangular in plan view, a flat shape in a direction penetrating the paper surface of FIG. 41.

[0386] by blowing compressed air from the blowing port 110a, it enters the air from the inlet 1 10A by Ejekuta one effect, as a result, tow 52Y is pulled forward force is applied. When bets © 52Y reaches the part Benchiyuri 110b, carried out exhaust from the air exhaust holes 110c, one force, in order to space the part 110b expands Benchiyuri mainly bulk tow 52Y is increased in the thickness direction , it is enlarged in thickness. Incidentally, the width of the passages, by greater than the width of the tow 52Y introduced, it is also possible widening as illustrated below in FIG. 41.

[0387] As high-absorbent polymer sprinkling means 90, which substantially dispersed throughout the thickness direction of the high-absorbent polymer particles with respect to aggregation of filaments are preferable. Such a superabsorbent polymer sprinkling means 90, not only the drop under force by the own weight of the superabsorbent polymer particles themselves, means for applying an acceleration force is desirable. The example shown in FIG. 42. In other words, is configured to rotate the rotary drum 90b is the direction of movement of © E blanking having a projection hole 90d in the casing 90a having an opening at the bottom (counterclockwise direction in FIG. 43), the shirt Tadoramu 90c therein it is those provided. Projecting portion 90A that these and elements (see FIG. 38) is connected to the hopper 90 B, the superabsorbent polymer sprinkling means 90 is constituted.

[0388] The high-absorbent polymer particles 54 from the hopper 90B is configured to be supplied into the rotary drum 90b. Here, in advance, to the open position of the casing 90a, the position adjustment of the opening of the shirt motor drum 9 Oc is performed. Is shown fully matched fully open state of FIG. 42. Further, the projection hole 90d of the rotary drum 90b, as a group are divided in the circumferential direction, in the illustrated divided as four groups in the circumferential direction, thus in the course of rotating the rotary drum 90b guard in the illustrated, four sheets Diapers It is as spraying 'projects superabsorbent polymer particles against.

[0389] The high-absorbent polymer particles 54 on the assembly of filaments 52 may be continuously sprayed 'projection, but as Fig. 37 is referred to, dividing the absorbent element 50 in the line direction by a cutter device 94 and, when a separate absorbent element 50, blade cutlet coater apparatus 94 worn away in a short time due to the presence of the superabsorbent polymer particles 54. Therefore, as shown in FIG. 42 Nag than continuously sprayed 'projecting superabsorbent polymer particles 54, ヽ desirable so as to intermittently spray-projected only to the zone Z.

[0390] For this, as described above, the projection hole 90d of the rotary drum 90b, as the divided groups in a circumferential direction, by in the illustrated form is divided as four groups in the circumferential direction, the superabsorbent poly mer particles 54 zone Z only is the are to be intermittently sprayed 'projection. As a result, the zone Z, can divide by a cutter device 94 between Z, it can be suppressed wear of the blade of the cutter device 94.

[0391] In the present invention, superabsorbent dispersion density of the polymer particles 54 of the main absorbent portion 56C and the crotch The inter sides 56S, the different forces such distribution and 56S, the superabsorbent polymer particles 54 or adjusted depending scattering amount at the site, can be produced by or employing a scatter pattern that does not spread in the crotch portion on both sides. Application rate of the superabsorbent polymer particles can be adjusted mainly large and small pore size of the projection hole 90d, the position adjustment of the opening of the shirt motor drum 90c for opening position of the casing 90a, spray pattern of superabsorbent polymer particles, projection It can be adjusted by the arrangement of the holes 90d.

[0392] On the other hand, if necessary, together with the pressure air superabsorbent polymer particles 54, by spraying 'projected onto the assembly of filaments 52, substantially the superabsorbent polymer particles child for a set of filaments it is also possible to disperse throughout the thickness direction. However, high-absorbent polymer particles were dispersed 'projected onto the aggregate of the filaments 52, scattered by compressed air, there is a difficulty to be sprayed outside Jo Tokoro region, Do can discouraged.

[0393] Furthermore, the superabsorbent polymer sprinkling means 90, or instead of this, the high-absorbent polymer particles 54 that are sprayed onto the aggregate of Firame cement from below of the assembly of the filaments, so as to suction it may be.

[0394] Further, as shown in FIG. 43, changing the turn roll 37 to the vacuum roll 106, simply superabsorbent Nag in spraying means 90 for spraying the superabsorbent polymer particles also added centrifugal force described above the superabsorbent polymer sprinkling means in the form of dropping by its own weight polymer particles, on the aggregate 52Z of the vacuum roll 106 upward force is also filaments 52 may be sprinkled superabsorbent port Rimmer particles 54. In this case, since superabsorbent polymer particles aggregate of filaments 52 by attractive force by the vacuum roll 106 to penetrate in the product stage, the superabsorbent polymer particles are dispersed at the bottom of the absorber 56. In order to produce a suction absorbent body of the present invention, Ri and adjusted in accordance with the site application rate of the superabsorbent polymer particles 54, it is that the crotch portion sides or adopted sprayed pattern so as not to spread is the same as the fabric means 90 dispersion described above.

[0395] On the other hand, FIG. 44 shows an example of a method of manufacturing the tape-type disposable diaper shown in FIGS. 35 and 36. Until the supply of the intermediate sheet (second sheet) 40 is the same as in the case of pants-type. After the intermediate sheet 40 is intermittently supplied, followed topsheet 30 from above is supplied liquid impervious sheet 70 from the bottom side, respectively, Roh rear sheet 64 constituting the Roh Riyakafusu 60 is supplied to the subsequent . Roh The supply line of rear sheet 64, previously, the rubber thread 62 between two non-woven fabrics by devices not illustrated figure is supplied force while being fixed under extension. In the last line, the semi-product comprising an absorbent body is divided by the cutter device 98, the product 10 is obtained.

Example

[0396] FIG. 47 is less than the basis weight of the main absorbent portion of the high-absorbent polymer particles in both sides of the crotch portion of the absorbent body, the absorbent article 200 according to the present invention, uniformly high absorption throughout the absorber in Comparative example 201 were dispersed sex polymer particles, to absorb 150g of manhole urine, a comparison of the rounding of the standing and product Roh rear force Hus 60. Rising higher in strength Bruno Riyakafusu 60 of the absorbent article 200 according to the present invention, it can be seen that curl as products to fit the body.

Industrial Applicability

[0397] The present invention, disposable diapers, sanitary napkins, incontinence pads, force can be applied to absorbent articles such as absorbent Nod used in combination with diaper cover S, optimally Ku diapers or diaper cover if the combined paper Contact offended absorption a pad.

BRIEF DESCRIPTION OF THE DRAWINGS

[0398] FIG. 1 is a perspective view of a pants-type disposable diaper.

FIG. 2 is a developed state plan view of the pant-type disposable diaper.

[Figure 3] pant using!, To form embossed discard diapers! / ヽ a, shown in the state, a 4 4 cross-sectional view taken along line of FIG.

[Figure 4] pant use, shown in a state of forming the embossed discard the diaper, a diagram cross-sectional view.

It is a cross-sectional view of another first example of FIG. 5 embossing.

It is a cross-sectional view of another second example of the FIG. 6 embossing.

7 is a third example cross-sectional view of another of the embossing.

8 is a developed state plan view of a tape type disposable diaper.

A 9 9-wire cross-sectional view of FIG. 9 Fig.

FIG. 10 is a perspective view of a pants-type disposable diaper.

11 is a developed state plan view of the pant-type disposable diaper.

A [12] 3-3 line sectional view of FIG. 11.

13 is a cross-sectional view of another example.

It is a cross-sectional view of FIG. 14 another example.

15 is a cross-sectional view of another example.

It is a cross-sectional view of FIG. 16 another example.

It is a cross-sectional view of FIG. 17 another example.

18 is a developed state plan view of a tape type disposable diaper.

A 9 9-wire cross-sectional view of FIG. 19 FIG. 18.

圆 20] is a schematic view showing a manufacturing facility example of absorber element.

圆 21] is a schematic view showing a manufacturing facility example of pant-type diapers.

圆 22] is a schematic view showing a manufacturing facility example of tape-type disposable diapers.

It is a schematic diagram of FIG. 23] opening equipment.

It is a schematic diagram of FIG. 24 widening device.

A XV XV sectional view of FIG. 25 FIG. 24.

It is a schematic diagram of FIG. 26 拡厚 device.

FIG. 27 is a schematic diagram of a SAP feeder example.

[28] pants type used!, Is a perspective view of a discarded diapers.

[Figure 29] is a developed state plan view of the pants-type disposable diapers. A [30] 3-3 cross-sectional view taken along line of FIG.

[FIG. 31] is a 3-3 taken along line corresponding cross-sectional view of another example.

[FIG. 32] is a 3-3 taken along line corresponding cross-sectional view of another example.

[33] a 33 taken along the line corresponding sectional view of a modification.

FIG. 34 is a further 3 3 taken along line corresponding cross-sectional view of another example.

[FIG. 35] is a developed state plan view of a tape type disposable diaper.

A 9 9 cross-sectional view of FIG 36 FIG 35.

圆 37] is a schematic view showing a manufacturing facility example of pant-type diapers.

[38] which is a main part schematic diagram.

It is a schematic diagram of FIG. 39 widening device.

A ΧΙΠ- ΧΙΠ sectional view of FIG 40 FIG 39.

It is a schematic diagram of FIG. 41 opening device.

圆 42 is a schematic diagram of a superabsorbent polymer sprinkling means example.

圆 43 is a schematic diagram of another high-absorbent polymer sprinkling form.

圆 44] is a schematic view showing a manufacturing facility example of tape-type disposable diapers.

It is a schematic view showing a planar layout of SAP and adhesive in FIG. 45 absorber.

[FIG. 46] is a diagram showing an example of the holding sheet.

It is a diagram showing FIG. 47 the experimental results.

DESCRIPTION OF SYMBOLS

10 ... pants-type disposable diapers, 10A ... tape-type disposable diapers, 12, ... exterior sheet, 12Α · ·· Roh Kkushito, 20, ... the absorbent body, 30, ... top sheet, 40, ... intermediate sheet , 50 ... absorbent element, 52-... filament, 52Kai-... Vale, 52Upushiron-... toe, 52Zeta & ... aggregate of filaments, 54-... superabsorbent polymer particles, 56 - ... absorber, 56Α · ·· upper layer absorbent body, 56B ... lower intake ί | ¾ί this, 58-... ^ 1 sheet, 60, 60Α · ·· Norya ^ 7 Hus, 64, ... Bruno rear seat, 70 · ·· ί night impermeable sheet, 72: second liquid impervious sheet, 80 ... holding sheet, E ... heat fusion portion, 90 ... high-absorbent polymer sprinkling means, 90 alpha ... projection section, 90a ... casing, 90b ... rotating drum , 90c ... shirts data drum, 92, ... Sarah, 94, ... cutter device, 98, ... cutter device, 1 00 ... turning apparatus, 102 ... Combined station, 104, ... adhesive coating apparatus, 110 ... 拡厚 equipment, blowing port 110a ... pressure, 110b ... Benchiyuri part, 120 ... widening device, 124 ... Fuji one - Ppuroru, 126Arufa & ... first--up, 126Beta · · · No. 2-up, 126C ... tert--up, 1 30 ... Fasuyungu piece, E ... recess, Z ... superabsorbent polymer sprinkling zone.

Claims

The scope of the claims
[1] a liquid-pervious topsheet, contact the absorbent body including an absorbent body formed by a filament aggregate formed by opening a tow, a liquid impervious sheet on an absorbent article having in this order, Te, wherein in the region where the absorbent body is located, and wherein the substantially longitudinal direction along the groove-like embossment from the topsheet reaches the absorber is formed! Ru that on both sides of the crotch portion of at least the wearer the absorbent article to be.
[2] The embossing may be formed along a direction intersecting with respect to the orientation direction of the filament aggregates! Absorbent article Ru claim 1.
[3] The embossing is, and a second portion formed in a first portion and front and rear portions of the absorbent body formed substantially in the longitudinal direction on both sides of the crotch portion of at least the wearer, the first connection with one portion and the second portion is substantially, substantially annular embossed is formed
V, Ru claim 1 or 2, absorbent article according.
[4] with an absorbent that absorbs the transmitted liquid topsheet use surface side,
The absorbent element, and absorption obtained by opening a tow is has a 1.0 times or less of the flame absorbent filament aggregate of its own weight,
The filament assembly, the filament extends along the top sheet, and both ends of the filament is spaced from the periphery of the absorbent element to the inner,
Absorbent article, characterized in that.
[5] the absorber, in which wrapped filament assembly at or liquid-permeable sheet is pasted to the liquid-permeable sheet, the absorbent article according to claim 4, wherein.
[6] on both sides of at least the crotch portion, is formed with embossed depressions having a shape longitudinal direction intermediate portion bulges in the width direction center side with extending along the longitudinal direction, the embossed recess of said topsheet is formed from the use side to reach the absorber, Ru, claim 4 or 5 absorbent article according.
[7] with an absorbent that absorbs the transmitted liquid topsheet use surface side,
The absorbent element has a lower absorbent body, an upper layer absorber provided on the top sheet side,
Extending the upper layer absorbent body, and absorption obtained by opening a tow is also 1.0 times or less of the flame absorption filament aggregate strength of its own weight, the filament assembly is filament along the topsheet and it has, and both ends of the filament is between away inwardly from the peripheral edge of the lower absorbent body,
Absorbent article, characterized in that.
[8] the upper layer absorber, those wrapped filament aggregates in or EkiToru over sheet pasted on the liquid-permeable sheet, the absorbent article according to claim 7 wherein.
[9] the lower layer absorber, those formed by fiber stacking mixing pulp fibers and superabsorbent polymer particles The absorbent article of claim 7 or 8, wherein.
[10] The lower layer absorber, those formed by fiber stacking mixed filament aggregates and superabsorbent polymer particles The absorbent article of claim 7 or 8, wherein.
[11] comprises an absorbent element for absorbing the transmitted liquid topsheet use surface side,
The absorbent element has a lower absorbent body, an upper layer absorber provided on the top sheet side,
Extending the lower absorbent body, and absorption obtained by opening a tow is also 1.0 times or less of the flame absorption filament aggregate strength of its own weight, the filament assembly is filament along the topsheet and it has, and both ends of the filament is between away inwardly from the peripheral edge of the upper layer absorbent body,
Absorbent article, characterized in that.
[12] on both sides of at least the crotch portion, is formed with embossed depressions having a shape longitudinal direction intermediate portion bulges in the width direction center side with extending along the longitudinal direction, the embossed recess of said topsheet It is formed from the use side to reach the upper layer absorbent body, according to claim 7: the absorbent article of any one of L 1.
[13] and absorption obtained by opening a tow is a 1.0 times or less of the flame absorption filament aggregate of its own weight, after wrapped with or liquid-permeable sheet is pasted to the liquid-permeable sheet, a filament cut at predetermined intervals in the continuous direction, the cut filament aggregate, pasted on a predetermined position on the absorber or absorption sheet over preparative method of the absorber, characterized in that.
[14] comprises an absorbent element for receiving and holding the liquid which has passed through the top sheet of the use surface side,
The absorbent element comprises an absorber having an aggregate and superabsorbent polymer particles of the filaments opening a tow,
The absorbent body includes a crotch portion, Propelled by one of the front portion and rear portion of the crotch portion of the crotch portion, and has a high-absorbent polymer particles in the main absorbent portion is a portion other than the both side portions of the crotch portion , the basis weight of the superabsorbent polymer particles in both sides of the crotch portion is smaller than the main absorbent portion minutes,
Absorbent article, characterized in that.
[15] The superabsorbent polymer particles are adhered to the aggregate of the filaments by an adhesive, the absorbent article according to claim 14, wherein.
[16] The absorbent element has a covering sheet for wrapping the absorbent body, wherein the superabsorbent polymer one grain is adhered to the covering sheet with an adhesive, Ru, absorption of claim 14 or 15, wherein sex articles.
[17] and a retaining seat for holding the high-absorbent polymer particles, the absorbent article according to any one of claims 14 to 16
[18] The superabsorbent polymer particles are adhered to the holding sheet by the adhesive, the absorbent article according to claim 17.
[19] and a retaining sheet having a holding hole of the high-absorbent polymer particles, according to claim 14
The absorbent article according to any one of to 18.
[20] includes only the holding sheet in a portion overlapping the main absorbent portion, the absorbent article according to claim 19, wherein.
[21] on the rear surface side of the absorbent body, and a holding sheet having only a holding hole of the high-absorbent polymer particles at a site overlapping with the main absorbent portion, according to any one of claims 14 to 18 absorbent article.
[22] The absorbent article of which the superabsorbent polymer adhesive for bonding has only been distribution in said main absorbent portion, claim 15, 16 or 18, wherein.
PCT/JP2006/321431 2005-10-26 2006-10-26 Absorbable article WO2007049725A1 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
JP2005-310659 2005-10-26
JP2005310659A JP4841224B2 (en) 2005-10-26 2005-10-26 The absorbent article
JP2005-376645 2005-12-27
JP2005376645A JP4969101B2 (en) 2005-12-27 2005-12-27 Manufacturing method of the absorbent article
JP2006101161A JP4724587B2 (en) 2006-03-31 2006-03-31 The absorbent article
JP2006-101161 2006-03-31

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001095846A (en) * 1999-09-30 2001-04-10 Daio Paper Corp Sanitary napkin having high-center portion and emboss
JP2002069781A (en) * 2000-09-01 2002-03-08 Uni Charm Corp Method and apparatus for opening continuous filament
JP2002509764A (en) * 1998-03-30 2002-04-02 パラゴン トレード ブランズ インコーポレイテッド Thin was produced in the folded absorbent laminate, the absorbent core
JP2003033398A (en) * 1991-07-23 2003-02-04 Clemson Univ Research Foundation Absorbing article capable of naturally transporting liquid, consisting of fibers

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003033398A (en) * 1991-07-23 2003-02-04 Clemson Univ Research Foundation Absorbing article capable of naturally transporting liquid, consisting of fibers
JP2002509764A (en) * 1998-03-30 2002-04-02 パラゴン トレード ブランズ インコーポレイテッド Thin was produced in the folded absorbent laminate, the absorbent core
JP2001095846A (en) * 1999-09-30 2001-04-10 Daio Paper Corp Sanitary napkin having high-center portion and emboss
JP2002069781A (en) * 2000-09-01 2002-03-08 Uni Charm Corp Method and apparatus for opening continuous filament

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