JP2003010242A - Absorbable article - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an absorbable article preventing an upper absorber from following the movement of a lower absorber even if underwear moves to any degree to prevent the positional shift thereof from the original position and capable of holding a state fitted to the body. SOLUTION: In the absorbable article 1 (sanitary napkin) including absorbers, the liquid permeable surface sheet arranged on the surface thereof and the liquid impermeable back surface sheet 2 arranged on the back surface thereof and characterized in that the absorber consists of the lower absorber 4 and the upper absorber 9 narrower than the lower absorber, the upper absorber 9 is arranged on the surface side of the absorbable article 1 at the center position in the longitudinal direction of the napkin to be substantially integrally bonded to the lower absorber 4 at least over the range including a blood discharge region H from the position on the front side of the blood discharge region H. The part of the upper absorber 9 on the side further rear from the rear end position of the bonded part from the range including the blood discharge region H is not bonded to the lower absorber 4 to constitute a free section 13 not substantially restricted in movement.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to menstrual blood, vaginal discharge,
It relates to absorbent articles such as sanitary napkins, panty liners, and incontinence pads for absorbing urine, etc. Specifically, the state where the absorbent body fits to the drainage site is maintained regardless of the displacement of underwear due to body movements. The absorbent article according to the present invention.

[0002]

2. Description of the Related Art Conventionally, as an absorbent article N such as a sanitary napkin, a panty liner, a vaginal discharge sheet or an incontinence pad, as shown in FIG. 10, for example, an impermeable material made of a polyethylene sheet or a polyethylene laminated nonwoven fabric is used. Liquid back sheet 50 and liquid top sheet 51 made of non-woven fabric or porous plastic sheet
It is known that an absorbent body 52 made of cotton-like pulp or the like is interposed between and.

In this type of absorbent article, in order to prevent misalignment, for example, one or a plurality of adhesive layers 53, 53 are formed on the non-use surface side (outer surface), and further, in the absorbent article. The wing-shaped flaps W, W extending outward are integrally formed on both sides in the longitudinal direction, and the pressure-sensitive adhesive layers 54, 54 are formed on the surfaces of the wing-shaped flaps W, W on the liquid impermeable backsheet side. There are those that are provided with.
In the product state, these adhesive layers 53, 54, ...
Release paper is temporarily attached to the.

When fixing the absorbent article N to the underwear, as shown in FIG. 4, first, the release paper temporarily attached to the non-use surface side is peeled off, and then the absorbent article N is locally applied. Put the wing flaps W and W protruding sideways from the underwear, and put both wing flaps W and W on the folding line R.
Fold back at L and RL, and stick it to the outer surface of the crotch part of the underwear while winding the crotch part of the underwear.

Although the absorbent article N is fixed to the underwear by the above-mentioned fixing method, the underwear may move in the front, rear, left, and right directions due to the movement of the body, so that the underwear accompanying the movement of the body may be changed. There is a problem that the absorbent article N fixed to the underwear moves due to the movement, and the absorbent body 52 shifts from the blood drainage site.

[0006] For such a problem, for example,
62-56025 (conventional example 1), Japanese Patent Publication No. 5-73419 (conventional example 2) and JP-A-10-33589 (conventional example 3).
Proposes an absorbent article structure in which the absorbent body is divided into a lower absorbent body and an upper absorbent body to prevent the entire absorbent body from being displaced together with the underwear.

Specifically, in the prior art example 1, a sanitary pad having a structure in which a rod-shaped pad is attached to the inner side surface of the strip-shaped pad main body which is abutted against the female local portion in the central longitudinal direction by fixing only the upper end portion thereof is proposed. In Conventional Example 2, an upper absorbent body is provided with a nonwoven fabric on the upper surface side and a waterproof paper is provided on the lower surface side, a nonwoven fabric or absorbent paper is provided on the upper surface, and waterproof paper is provided on the lower surface side, and a fixing tape is provided on the lower surface of the waterproof paper. There is proposed a sanitary napkin having a structure in which the lower absorbent body having the above-mentioned structure is laminated and arranged, and the upper absorbent body and the lower absorbent body are fixed only at both ends in the longitudinal direction. In the conventional example 3, an absorbent article is configured. The absorbent portion includes an upper layer absorbent body and a lower layer absorbent body, each of these absorbent bodies is independently formed, and is disposed in a substantially non-contact state, and has a width with respect to the lower layer absorbent body. direction Absorbent articles coated has been proposed by the phase change freely topsheet.

[0008]

However, in the case of the sanitary napkin according to the conventional example 1, only the upper end of the rod-shaped pad is fixed to the sanitary napkin main body, and therefore the rod-shaped pad is It can move freely without being substantially restrained by others. Therefore, there is a possibility that the rod-shaped pad may be largely displaced during wearing or due to vigorous exercise of the body, which may cause leakage.

Further, in the case of the sanitary napkin according to the conventional example 2, since the upper absorbent body is fixed to the lower absorbent body at the front and rear ends respectively, the upper absorbent body may not be largely displaced. Although not present, the force associated with the movement of the body (this force is mainly transmitted from the rear end side (glute side) where the movement is large) is transmitted to the upper absorbent body, and at the same time as blood drainage, the upper absorbent body is transferred. Is not fixed, there is a problem that the upper absorbent body is displaced in an intermediate portion corresponding to the blood drainage site, and leakage easily occurs.

On the other hand, in the case of the sanitary napkin according to Conventional Example 3, the upper absorbent body and the lower absorbent body are connected by the "continuous portion formed by the surface sheet" mentioned in the specification. Due to the structure, the upper absorbent body is appropriately restrained, and even if the lower absorbent body is displaced due to the movement of the underwear, the upper absorbent body is retained without being displaced from the blood drainage site. After that, the lower absorbent body has an advantage that it is returned to the original state by the restoring force of the connecting portion. However, in the case of such a structure, the function can be surely exerted up to a certain amount of movement of the body, but when the movement of the body exceeds the allowable range, it is accompanied by a large displacement of the lower absorbent body. After all, there is a problem that the upper absorber is displaced.

Therefore, the main object of the present invention is to prevent the upper absorbent body from following the movement of the lower absorbent body, no matter how much the underwear moves, and prevent the upper absorbent body from being displaced from the initial position, thereby maintaining a state fitted to the body. An object is to provide an absorbent article that has been obtained.

[0012]

In order to solve the above-mentioned problems, the present invention according to claim 1 provides an absorber, a liquid-permeable surface sheet arranged on the front surface side, and an impermeable member arranged on the back surface side. A liquid backside sheet, wherein the absorbent body is an absorbent article composed of a lower absorbent body and an upper absorbent body having a narrower width than the lower absorbent body, wherein the upper absorbent body is a surface side of the absorbent article, and It is arranged at the central position in the longitudinal direction, and at least the position from the front side of the blood drainage site to the range including the blood drainage site is substantially joined and integrated with the lower absorbent body side to the range including the blood drainage site. Provided is an absorbent article, characterized in that a rear side portion from the rear end position of the portion is not joined to the lower absorbent body side, and constitutes a free section which is substantially not restricted in movement.

According to the second aspect of the present invention, the upper surface is transparent at the center position in the longitudinal direction of the front surface of the absorbent article in which the lower absorbent body is interposed between the liquid permeable top sheet and the liquid impermeable back sheet. While being covered with a liquid sheet, the lower surface is covered with a liquid-permeable sheet or a liquid-impermeable sheet, and an upper absorbent body having a width narrower than that of the lower absorbent body is arranged. From the front side position to the range including the blood drainage site is substantially joined and integrated with the lower absorbent body side, and the rear side portion from the rear end position to the range including the blood drainage site is the lower absorption side. There is provided an absorbent article, which is not joined to the body side and constitutes a free section that is not substantially restrained from moving.

According to a third aspect of the present invention, in a free section of the upper absorbent body, a liquid-permeable sheet or a liquid-impermeable sheet covering the lower surface side of the upper absorbent body and a surface side of the lower absorbent body are provided. The absorbent article according to claim 2, wherein the average coefficient of dynamic friction with the liquid-permeable topsheet that covers it is 0.5 or less.

According to a fourth aspect of the present invention, notches are formed on both side edges of the absorbent article at a substantially boundary portion between a joining section and a non-joining section of the upper absorbent body with respect to the lower absorbent body side. The rear end side region of the absorbent article containing is made to be easily deformable in the left-right direction.
An absorbent article according to any one is provided.

As a fifth aspect of the present invention, the side edge region of the absorbent article is provided with elasticity at a substantially boundary portion between a joining section and a non-joining section of the upper absorbent body with respect to the lower absorbent body side, and The rear end side region of the absorbent article including the absorbent body is easily deformable in the left-right direction.
An absorbent article according to any one is provided.

As a sixth aspect of the present invention, in at least the rear end region of the absorbent article, the liquid-impervious backsheet portion is made elastic, and the rear end side of the absorbent article including the lower absorbent body is provided. The absorbent article according to any one of claims 1 to 3, wherein the region is made to be easily deformable.

According to a seventh aspect of the present invention, at the substantially boundary portion between the joining section and the non-joining section of the upper absorbent body with respect to the lower absorbent body, the lower absorbent body has a Z-shaped cross section in the longitudinal direction of the absorbent article. The absorbent article according to any one of claims 1 to 3, wherein a folded portion is provided, and the rear end side region of the absorbent article including the lower absorbent body is easily deformable in the left-right direction.

According to an eighth aspect of the present invention, notches are formed in both side edge portions of the lower absorbent body at a substantially boundary portion between a bonded section and a non-bonded section of the upper absorbent body with respect to the lower absorbent body side. An absorbent article according to any one of Items 1 to 6 is provided.

According to a ninth aspect of the present invention, the lower absorbent body is divided into a front end side absorbent body and a rear end side absorbent body at a substantially boundary portion between a joined section and a non-joined section of the upper absorbent body with respect to the lower absorbent body side. The absorbent article according to any one of claims 1 to 7, wherein the absorbent article is separated into.

[0021]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. 1 is a plan view of a sanitary napkin 1 according to the present invention, FIG. 2 is a view taken along line II-II of FIG. 1, and FIG. 3 is a view taken along line III-III of FIG.

The sanitary napkin 1 includes a liquid-impermeable back sheet 2 made of a polyethylene sheet, a polypropylene sheet, etc., a liquid-permeable top sheet 3 for quickly permeating menstrual blood and foreign matter, and both sheets 2 , 3 interposed between lower absorbent body 4 made of cotton-like pulp or synthetic pulp, crepe paper 5 surrounding the lower absorbent body 4 to maintain its shape and improve diffusivity; The sanitary napkin 1 that is on the front surface side of the topsheet 3
Of the upper absorbent body 9 arranged at the center position in the longitudinal direction of the liquid absorbent impermeable back sheet 2 and the liquid permeable front sheet 3 at the upper and lower edges of the lower absorbent body 4. And the liquid-impervious backsheet 2 which is joined at its outer edge portion by an adhesive such as hot melt or an adhesive means such as heat seal and which extends laterally beyond the lower absorbent body 4 at both edge portions thereof. The liquid-permeable topsheet 3 is joined to the liquid-permeable topsheet 3 by an adhesive such as hot melt or an adhesive means such as heat seal.

The structure of the sanitary napkin 1 will be described in more detail below. As the liquid-impervious backsheet 2, a sheet material having at least water impermeability such as an olefin resin sheet such as polyethylene or polypropylene is used. In addition to this, a laminated non-woven fabric obtained by laminating a non-woven fabric on a polyethylene sheet or the like, or a non-woven fabric sheet (in this case, a waterproof film and a non-woven fabric are used together with a waterproof film interposed therebetween to ensure substantially liquid impermeability). Which constitutes the liquid-permeable back sheet) or the like. In recent years, from the viewpoint of preventing stuffiness, a material having moisture permeability tends to be used. This water-impermeable / moisture-permeable sheet material is obtained by melt-kneading an inorganic filler in an olefin resin such as polyethylene or polypropylene to form a sheet, and then stretching the sheet uniaxially or biaxially It is a sheet.

Next, as the liquid-permeable surface sheet 3, a perforated or non-perforated non-woven fabric, a porous plastic sheet or the like is preferably used. As the material fibers constituting the non-woven fabric, for example, synthetic fibers such as olefins such as polyethylene or polypropylene, polyesters, polyamides, etc., regenerated fibers such as rayon or cupra, natural fibers such as cotton, etc. can be used. A nonwoven fabric obtained by an appropriate processing method such as a lace method, a spun bond method, a thermal bond method, a melt blown method, or a needle punch method can be used. Among these processing methods, the spunlace method is excellent in flexibility and drapability, and the thermal bond method is excellent in bulkiness and softness. In addition,
As in this example, if the crepe paper 5 surrounding the absorbent body 4 is provided and, as a result, the crepe paper 5 is interposed between the liquid-permeable surface sheet 3 and the absorbent body 4, excellent absorption is achieved. The crepe paper 5 quickly diffuses the body fluid and prevents the menstrual blood and the like from returning.

The lower absorbent body 4 interposed between the liquid-impermeable backsheet 2 and the liquid-permeable topsheet 3 is made of, for example, fluff pulp and water-absorbing polymer. The water-absorbent polymer is mixed in the pulp constituting the absorber as, for example, granular powder. Examples of the pulp include chemical pulp obtained from wood, cellulose fibers such as dissolving pulp, and rayon, and those comprising artificial cellulose fibers such as acetate, and softwood pulp having a longer fiber length than hardwood pulp has a function and It is preferably used in terms of price.

On the rear side of the sanitary napkin 1, side embosses 10 and 1 are provided at both sides of the lower absorbent body 4 along the longitudinal direction from the upper surface side of the liquid-permeable surface sheet 3.
The value 0 is given to prevent the lower absorbent body 4 from being displaced.

On the other hand, one or a plurality of adhesive layers 14, 14 (see FIG. 3) are provided on the outer surface side of the liquid-impervious backsheet 2 along the longitudinal direction of the napkin, and
On both sides of the sanitary napkin 1 in the vicinity of the blood drainage site H, a part of the liquid-permeable topsheet 3 is laterally extended and a part of the liquid-impermeable backsheet 2 is laterally expanded. The liquid-permeable topsheet 3 portion and the liquid-impervious backsheet 2 portion that are extended to the sides are joined by a hot melt adhesive or the like to form wing-shaped flaps W, W. Adhesive layers 11, 11 are provided on the surface of the wing-shaped flaps W, W on the liquid-impervious backsheet 2 side, and the liquid-permeable topsheet 3 and the liquid-impermeable liquid are also provided on both sides on the rear side. buttocks side flaps W _B by lateral extending portion of the sexual backsheet 2, W _B are formed, the adhesive layer 12, 12 is provided on the surface of the liquid-impermeable back sheet 2 side.

The upper absorbent body 9 located on the surface side of the liquid-permeable topsheet 3 and at the center position in the longitudinal direction of the napkin further has a nonwoven fabric or a transparent material on the surface side of the absorbent body surrounded by the crepe paper 8. The absorbent body is covered with a liquid-permeable sheet 6 such as a porous plastic sheet, and the back side is covered with a liquid-permeable sheet 7A or a liquid-impermeable sheet 7B. In this case, in order to transfer the body fluid absorbed in the upper absorbent body 9 to the lower absorbent body 4 side, the back surface side is covered with the liquid permeable sheet 7A, and the upper absorbent body 9 has a sufficient absorbing ability. Is the liquid impermeable sheet 7 on the back side.
It can be covered by B. Of course, you may surround so that the whole may be wrapped with one liquid permeable sheet.

The width of the upper absorbent body 9 is narrower than that of the lower absorbent body 4. Specifically, the width B ₁ of the upper absorbent body 9 is preferably 2 to 6 cm, preferably 3 to 5 cm, and is 30 with respect to the width B ₂ of the lower absorbent body.
It is desirable to be 70%, preferably 40-60%. When the width B ₁ of the upper absorbent body 9 is less than 2 cm, the body fluid discharge portion of the wearer cannot be sufficiently covered and leakage easily occurs. If it exceeds 6 cm, the fit of the wearer's body fluid discharge part cannot be ensured.

The upper absorbent body 9 is manufactured as a separate body and then fixed to the surface side of the liquid permeable surface sheet 3. In this fixing, particularly in the present invention, at least the position from the front side of the blood drainage site H of the upper absorbent body 9 to the range including the blood drainage site is substantially joined and integrated with the lower absorbent body 4 side, A free section in which the rear side portion from the rear end position K of the joint portion up to the range including the blood drainage site H is not joined to the lower absorbent body 4 side (the liquid permeable surface sheet 3) and the movement is not substantially restricted 13 is composed.

The front end of the upper absorbent body 9 is preferably located at the same position as the front end of the sanitary napkin 1 as shown in the figure, but at least in front of the blood drainage site H. If the side position is joined with the front part as the starting point,
The front part of the sanitary napkin 1 may be located on the inner side of the front edge of the front nap. Further, the rear edge of the upper absorbent body 9 is arranged to be substantially aligned with the rear edge of the lower absorbent body 4 in the illustrated example, but may be shorter than this.

In the sanitary napkin 1 described above, the upper absorbent body 9 is exactly applied to the blood drainage part of the wearer, and as shown in FIG. 4, a wing-shaped flap W protruding laterally, W and wing flap W
_B, and _{W B} out from underwear 30, the two wing-like flaps W
..., W B _... The fold line RL, folded in RL, is mounted so as to adhere to the crotch outer surface of the undergarment 30 while allowing involve crotch portion of an undergarment.

When the wearer exercises while wearing the sanitary napkin 1, the underwear 30 receives a large acting force due to the motion of the wearer, and tensile deformation and compression deformation and lateral displacement are frequently repeated. become. When the sanitary napkin 1 fixed to the underwear receives a lateral force due to the deformation or movement of the underwear, the rear end side portion (the buttocks side portion) of the sanitary napkin 1 including the lower absorbent body 4 moves in the underwear. With this, the free section 13 of the upper absorbent body 9 is separated from the lower absorbent body 4, so that the lower absorbent body 4 is moved to the original position even if the lower absorbent body 4 is largely moved. Stays in the position and does not cause a positional shift. Further, since the force in the moving direction of the lower absorbent body 4 is not transmitted to the upper absorbent body 9 side, even in the joining section of the upper absorbent body 9 including the blood drainage site H, the positional displacement does not occur and the blood is discharged to the wearer's blood drainage portion. It keeps the fit condition, and it surely prevents leakage.

In order to facilitate the relative movement of the upper absorbent body 9 and the lower absorbent body 4 in the free section 13 of the upper absorbent body 9, a liquid-permeable sheet covering the lower surface side of the upper absorbent body 9 or It is desirable that the average dynamic friction coefficient between the liquid-impermeable sheet and the liquid-permeable surface sheet that covers the surface side of the lower absorber is 0.5 or less. When the average dynamic friction coefficient exceeds 0.5, the force in the left-right direction is transmitted to the upper absorber 9 side due to friction as the lower absorber 4 moves, and the upper absorber 9 is displaced. There is.

On the other hand, in order to allow the rear end side region 20 of the sanitary napkin including the lower absorbent body 4 to be easily deformed in the left-right direction (swing-shaped deformation movement) in accordance with the deformation or movement of the underwear, For example, as shown in FIG. 5, cuts 15 and 15 are formed in both side edge portions S of the sanitary napkin 1 at a substantially boundary portion K between a joining section and a non-joining section of the upper absorbent body 9 with respect to the lower absorbent body 4 side. It is desirable to form the notches 4a and 4a on both side edge portions S of the lower absorbent body 4 while forming the notches.

As a method other than the above, for example, as shown in FIG. 6, the lower absorber 4 of the upper absorber 9 is used.
It is desirable to provide the stretchable portions 16 on both side edge portions S of the sanitary napkin 1 at the substantially boundary portion K between the joining section and the non-joining section with respect to the side. As the structure of the stretchable portion 16, as the liquid-permeable surface sheet 3, a nonwoven fabric composed of long fibers made of an elastic resin material such as polyurethane that easily reversibly plastically deforms, or the fibers themselves when stretched. Although the fiber diameter does not change, a zigzag or spiral crimp is formed, and by using a non-woven fabric or a stretchable plastic sheet that is stretchable by stretching the crimp, the liquid impermeable Stretchability may be imparted to the portion by using a stretchable plastic sheet as the back sheet 2.
The portion may be stretched by embossing in a wavy or stretchable manner. In this case also, the lower absorbent body 4 has a notch 4 on both side edges S.
It is desirable to form a and 4a.

As yet another method, as shown in FIG. 7, the lower absorbent body 4 has a physiological property at a substantially boundary portion K between a joined section and a non-joined section of the upper absorbent body 9 with respect to the lower absorbent body 4 side. It is possible to provide a folded portion 17 having a Z-shaped cross section in the longitudinal direction of the sanitary napkin 1 so that the rear end side region 20 of the sanitary napkin including the lower absorbent body 4 can be easily deformed in the left-right direction. In this case, it is desirable to use a sheet-shaped absorber that is as thin as possible for the lower absorbent body 4 in order to eliminate the feeling of stiffness of the folded portion 17.

By the way, in the above-mentioned case, the part of both side edges S, S of the sanitary napkin 1 is mainly processed, but as shown in FIG. Elasticity may be given to the entire rear end side region 20 (hatched region) including the sanitary napkin. The stretchability is imparted by using a stretchable non-woven fabric or a stretchable plastic sheet as the liquid permeable front sheet 3 and a stretchable plastic sheet as the liquid impermeable back sheet 2.

In order to allow the rear end region 20 of the lower absorbent body 4 to be easily deformed in the left-right direction, other than the method of forming the cuts 4a, 4a on both side edges as described above, FIG.
As shown in FIG. 5, the lower absorbent body 4 is connected to the front end side absorbent body 4A and the rear end side absorbent body 4 at a substantially boundary portion K between the joined section and the non-joined section of the upper absorbent body 9 with respect to the lower absorbent body 4 side.
It can also be separated into B.

[0040]

EXAMPLE In this example, a suitable value of the average dynamic friction coefficient between the lower surface side sheet covering the lower surface side of the upper absorbent body 9 and the upper side sheet (liquid permeable surface sheet 3) covering the lower absorbent body 4 was tested. I went. The test is a stainless steel piece (63 mm x
63 mm, 200 g) with a hook attached to the loading test plate, the material to be placed on the lower surface of the upper layer is fixed and fixed, and the material to be placed on the upper surface of the lower layer on the upper surface of the sliding test stand is 250 mm in length x 100 mm in width. Cut, paste and fix it, and place it with the material side of the load plate facing the material side fixed to the test stand, pull the thread tied to the hook horizontally, and pull it when sliding The average coefficient of dynamic friction was calculated from the force.
The measurement conditions are a test speed of 300 mm / min and a recording speed of 200 mm.
/ min, the test distance was 100 mm. Also, as a sensory evaluation,
Prototype product sample, wearing test by 10 women,
Based on a sample in which the upper and lower absorbers are completely joined, the fit and discomfort can be judged as ◎,
A three-level evaluation of ○ and × was performed. The results are shown in Table 1.

[0041]

[Table 1]

From the results shown in Table 1, it was found that when the average coefficient of dynamic friction is 0.5 or less, a sensory evaluation of ⊚ can be obtained, and the lower surface of the upper layer is a non-aperture film. In the case where the upper surface of the lower layer is a perforated film (in Table 1, the central test result of Case 2),
It was found that the average dynamic friction coefficient is the minimum value, which is the most desirable mode.

[0043]

As described above in detail, according to the present invention, no matter how much the underwear moves, the upper absorbent body does not follow the movement of the lower absorbent body so that the upper absorbent body does not shift from the initial position and fits to the body. You will be able to keep the state you did. As a result, leakage of body fluid can be reliably prevented.

[Brief description of drawings]

FIG. 1 is a partially cutaway plan view of a sanitary napkin 1 according to the present invention.

FIG. 2 is a view taken along the line II-II of FIG.

FIG. 3 is a view taken along the line III-III in FIG.

FIG. 4 is a view showing a state where the sanitary napkin 1 is attached.

FIG. 5 is a first mode view for showing the rear end side region of the lower absorbent body 4 which is easily deformable.

FIG. 6 is a second mode view for showing the rear end side region of the lower absorbent body 4 which is easily deformable.

7A and 7B are views showing a third mode in which the rear end side region of the lower absorbent body 4 is easily deformable, FIG. 7A is a plan view, and FIG. 7B is a view taken along line BB of FIG. 7A. .

FIG. 8 is a fourth mode view for showing the rear end side region of the lower absorbent body 4 which is easily deformable.

FIG. 9 is a fifth mode view for showing the rear end side region of the lower absorbent body 4 which is easily deformable.

FIG. 10 is a plan view of a conventional sanitary napkin N.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Sanitary napkin, 2 ... Liquid-impermeable backsheet, 3 ... Liquid-permeable topsheet, 4 ... Lower absorber, 4a ... Notch, 5 ...
Crepe paper, 6 ... Liquid permeable sheet, 7A ... Liquid permeable sheet,
7B: Liquid-impermeable sheet, 8 ... Crepe paper, 9 ... Upper absorbent body, 10 ... Side embossing, 11.12.14 ... Adhesive layer, 13 ... Free section, 15 ... Notch, 16 ... Elastic part,
17 ... Folding portion, 4A ... Front end side absorbent body, 4B ... Rear end side absorbent body

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Claims (9)

[Claims] 1. An absorber, a liquid-permeable top sheet arranged on the front side, and a liquid-impermeable back sheet arranged on the back side, wherein the absorber is a lower absorber and narrower than the lower absorber. In the absorbent article configured with the upper absorbent body, the upper absorbent body is disposed on the front surface side of the absorbent article and at the center position in the longitudinal direction, and the blood drainage is performed from at least the front side position of the blood drainage site. The region including the portion is substantially joined to the lower absorbent body side to form an integral body, and the rear side portion from the rear end position of the joined portion to the range including the blood drainage region is not joined to the lower absorbent body side, and An absorbent article, characterized in that it constitutes a free section that is not physically restricted in movement. 2. An upper surface is covered with a liquid-permeable sheet at a central position in the longitudinal direction of the surface side of an absorbent article in which a lower absorbent body is interposed between a liquid-permeable top sheet and a liquid-impermeable back sheet. An upper absorbent body having a lower surface side covered with a liquid-permeable sheet or a liquid-impermeable sheet and having a width narrower than that of the lower absorbent body is disposed. A range including the blood site is substantially joined and integrated with the lower absorbent body side, and a further rear side portion from the joint rear end position to the range including the blood draining site is not joined to the lower absorbent body side, An absorbent article, characterized in that it constitutes a free section that is not substantially restrained from moving. 3. A liquid-permeable sheet or a liquid-impermeable sheet that covers the lower surface of the upper absorbent body in the free section of the upper absorbent body, and a liquid-permeable surface sheet that covers the front surface side of the lower absorbent body. The absorbent article according to claim 2, wherein the average dynamic friction coefficient is 0.5 or less. 4. An absorbent article including a lower absorbent body, in which notches are formed at both side edges of the absorbent article at a substantially boundary portion between a joined section and a non-joined section of the upper absorbent body with respect to the lower absorbent body side. The absorbent article according to any one of claims 1 to 3, wherein the end side region is made to be easily deformable in the left-right direction. 5. An absorbent article including a lower absorbent body, which is stretchable at a side edge region of the absorbent article at a substantially boundary portion between a joined section and a non-joined section of the upper absorbent body with respect to the lower absorbent body side. The absorbent article according to any one of claims 1 to 3, wherein the rear end side region is made to be easily deformable in the left-right direction. 6. The liquid-impervious back sheet portion is made stretchable at least in the rear end region of the absorbent article, and the rear end region of the absorbent article including the lower absorbent body is easily deformable. The absorbent article according to any one of claims 1 to 3, which is configured as described above. 7. A folded portion having a Z-shaped cross section in the longitudinal direction of the absorbent article is provided in the lower absorbent body at a substantially boundary portion between a joined section and a non-joined section of the upper absorbent body with respect to the lower absorbent body side. The absorbent article according to any one of claims 1 to 3, wherein the rear end region of the absorbent article including the body is easily deformable in the left-right direction. 8. A notch is formed in both side edge portions of the lower absorbent body at a substantially boundary portion between a bonded section and a non-bonded section of the upper absorbent body with respect to the lower absorbent body side. The absorbent article described. 9. The lower absorbent body is separated into a front end side absorbent body and a rear end side absorbent body at a substantially boundary portion between a joined section and a non-joined section of the upper absorbent body with respect to the lower absorbent body side. The absorbent article according to any one of 1 to 7.