CN1689540A - Absorptive articles - Google Patents

Abstract

In the present invention, many dot-shaped recesses (7) are formed on the opposite surface of the back sheet, and a dense structure is formed on the entire surface direction of the absorber (4). In addition, a plurality of crimping portions (9) are formed in the excretory portion-facing region (A) in the face-sheet facing surface. The absorber (4) is in close contact with the surface sheet (2) in at least the excretory-facing region of the surface sheet-facing surface. The surface sheet (2) has many protrusions (11) on the surface side, and it is preferable that the back surface of the surface sheet (2) is flatter than the surface. Preferably, the ratio of the sum of the areas of the recesses (7) on the opposite side of the back sheet to the opposite side of the back sheet is higher than the ratio of the sum of the areas of the crimping parts (9) on the opposite side of the front sheet to the opposite side of the front sheet.

Description

absorbent article

technical field

The present invention relates to absorbent articles such as sanitary napkins, incontinence pads, textile sheets, and disposable diapers.

Background technique

There is known an absorbent article in which one or both surfaces of an absorbent body are embossed. For example, there has been proposed a method of compressing the absorbent body from the back sheet side or both sides by embossing for the purpose of improving liquid diffusibility and reducing wetback, forming a compressed part and a non-compressed part. Sexual items (refer to Japanese Patent Laid-Open No. 58-65003).

However, in the above-mentioned absorbent article, it cannot be said that the transferability of the liquid to the absorbent body is very fast, and the surface sheet is wet in the state after the liquid is excreted, causing a feeling of stickiness to the skin. In addition, since the entire area of the absorbent body opposite to the surface sheet is embossed, the rigidity against bending of the entire absorbent article becomes strong, which affects the fit to the body and easily causes liquid leakage.

Contents of the invention

The present invention provides an absorbent article in which the absorber is embossed from the side opposite to the back sheet of the absorber, and a plurality of recesses are formed on the face opposite to the back sheet so as to be formed in the entire surface direction of the absorber. The absorbent body is embossed together with the surface sheet from the surface sheet-facing side of the absorber, thereby forming a plurality of crimps in the excretory portion-facing region of the surface sheet facing surface. department. The absorber and the top sheet are in close contact at least in the excretory portion-facing region of the top sheet facing surface.

Description of drawings

Fig. 1 is a perspective view showing a sanitary napkin which is an example of the absorbent article of the present invention.

Fig. 2 is a sectional view taken along line II-II in Fig. 1 .

Detailed ways

Hereinafter, the present invention will be described based on its preferred embodiments with reference to the drawings. FIG. 1 shows a perspective view of a sanitary napkin which is an example of the absorbent article of the present invention. Fig. 2 is a sectional view taken along line II-II in Fig. 1 .

The sanitary napkin 1 shown in FIGS. 1 and 2 has a liquid-permeable top sheet 2, a liquid-impermeable back sheet 3 and a liquid-retaining absorbent body 4 between these two sheets, Actually formed into an elongated shape. The absorber 4 is sandwiched and fixed between the top sheet 2 and the back sheet 3 . The topsheet 2 is formed as a skin-contacting surface facing the wearer's skin when worn. The surface sheet 2 in this embodiment is provided with side sheets 5 connected to the edge portions on both sides respectively. The side sheets 5 and the back sheet 3 extend outward in the width direction from both side edges in the longitudinal direction of the absorber 4 , and are joined to each other in the extended portions to form side flaps 50 . Furthermore, the top sheet 2 and the back sheet 3 extend outward in the longitudinal direction from both ends in the longitudinal direction of the absorber 4 , and are joined to each other in the extended portion to form the end seal portion 6 . The back sheet 3 and the side sheet 5 are not particularly limited, and those generally used in this technical field can be used. The same applies to the absorber 4, and for example, a stacked body (laminated body) of pulp and a superabsorbent polymer can be used. The surface sheet 2 will be described in detail later.

As shown in FIG. 2, in the sanitary napkin 1 of the present embodiment, many dot-like recesses 7 are formed on the side of the absorbent body 4 opposite to the back sheet. The dot-like recesses 7 are preferably provided on at least the excretory portion-facing region of the back sheet-facing surface of the absorber 4, and in this embodiment, formed over the entire area of the back-sheet-facing surface. The dot-like recesses 7 are formed by embossing the absorber 4 from the side facing the back sheet of the absorber 4 . However, the absorber 4 was not embossed from the surface sheet facing side except for the excretory portion facing region described later. As a result, the back sheet facing surface of the absorber 4 becomes an uneven surface, and the top sheet facing surface becomes a substantially flat surface. However, depending on the embossing conditions when forming the dotted recesses 7, the positions corresponding to the dotted recesses 7 on the surface sheet facing surface may be slightly uneven.

In addition, the embossing process for forming the dot-shaped recessed part 7 is performed only to the absorber 4. As shown in FIG. That is, the absorber 4 is not embossed together with the surface sheet 2 and the back surface sheet 3 to form the dot-like recesses 7 .

In addition, by embossing the absorber 4 from the opposite side of the back sheet, the dense structure is formed on the absorber 4 along the entire surface direction and over the entire area. Specifically, a dense structure consisting of compressed dense parts 4a and sparse parts 4b in an uncompressed state is formed. The dense portion 4 a is located at the bottom of the point-shaped recess 7 .

By forming the dense structure on the absorber 4, two functions can be imparted to the absorber 4. The first is the function of increasing the diffusivity of liquid due to the presence of the dense portion 4a. In the dense portion 4a, the capillary force acts strongly, and the liquid quickly spreads in the planar direction of the absorbent body 4. The second is a function of increasing liquid permeability due to the presence of the sparse portion 4b. Since the sparse portion 4b has a space through which the liquid can easily pass, the drained liquid quickly permeates in the thickness direction of the absorbent body 4 . These two functions enable rapid penetration and diffusion of liquid, and in the absorber 4, the liquid can be sufficiently diffused in the planar direction, and the absorption capacity of the entire absorber can be fully utilized. As a result, the usage-amount of pulp and a superabsorbent polymer can be reduced without wasting the absorption capacity. This is advantageous from the viewpoint of economy and environmental load reduction.

Forming the dense structure on the absorbent body 4 improves the shape retention of the absorbent body 4 and also has the additional effect that, for example, the absorbent body 4 is less likely to wrinkle even when the wearer performs vigorous exercise.

The area of the dot-shaped concave portion 7 is 0.5-15 mm ² , especially 1-10 mm ² , which means that the capillary force effective for liquid diffusion can be designed, and the rigidity of the bending of the sanitary napkin as a whole is not too high, that is, it does not make wearing It's best spoken from the point of view of the user feeling uncomfortable and insecure about not fitting. The dot-like recesses 7 preferably have a low anisotropy shape with an aspect ratio close to 1. For example, shapes such as circles, rectangles, triangles, and other polygons can be used. The ratio of the sum of the areas of the dot-like recesses 7 to the area of the back sheet-facing surface of the absorber 4 (hereinafter referred to as the side area ratio of the back-sheet facing surface) is 1 to 50%, particularly 2 to 30%. It is preferable from the viewpoint of being able to form a desired dense structure on the absorber 4 .

The pitch of the dot-shaped recesses 7 in the longitudinal direction of the sanitary napkin 1 is 3-10 mm, especially 3-7 mm. In addition, the pitch in the width direction of the sanitary napkin 1 is 3-10 mm, especially 3-7 mm. This is from the following point of view It is the best, that is, it has both effective capillary force for liquid diffusion and easy liquid permeable space. Using these two functions, rapid liquid permeation and diffusion can be realized, and the overall absorption capacity of the absorbent body can be thoroughly and effectively used. .

As mentioned above, since the dot-shaped recesses 7 are provided on the back sheet-facing surface of the absorber 4, a dense structure is formed on the absorber 4, and the surface sheet-facing surface of the absorber 4 becomes substantially a flat surface. . As a result, the closeness between the absorber 4 and the topsheet 2 increases, and the transfer of the liquid from the topsheet 2 to the absorber 4 further accelerates. From this viewpoint, it is preferable that the back surface of the surface sheet 2 (that is, the surface facing the absorber) be substantially flat as will be described later.

As shown in FIG. 1 , on the sanitary napkin 1 , crimping portions 9 are formed at a plurality of places in the central portion A in the width direction of the excretory portion-facing region on the skin-contacting surface side. The crimping portion 9 is formed into a short line shape. The crimping portion 9 is formed to extend in the length direction of the sanitary napkin 1 . The crimping portions 9 are formed discontinuously at predetermined intervals in the longitudinal direction of the sanitary napkin 1 . In addition, in the width direction of the sanitary napkin 1, a plurality of rows of crimping portions 9 are formed at predetermined intervals.

The crimping portion 9 is formed by compressing integrally with the surface sheet 2 and the absorber 4 . The absorber 4 is embossed together with the surface sheet 2 from the side facing the surface sheet of the absorber 4 to form a crimping portion 9 . In the crimping portion 9, the surface sheet 2 is pressed by an embossing pin (not shown), and the entire thickness direction of the surface sheet 2 is sunk into the inside of the absorber 4, and at this sunken portion, the top sheet The material 2 is bonded and fixed to the absorber 4 . Therefore, the top sheet 2 is fixed to the absorber 4 between the crimped portions in a state of tension. By the action of this tension, even if deformation or the like occurs in the sanitary napkin 1 due to the movement of the body during wearing, the top sheet 2 and the absorbent body 4 can maintain good tightness, and the liquid excreted on the top sheet 2 It is quickly transferred to the absorbent body 4 and absorbed. The surface sheet 2 and the absorber 4 may be bonded by heat welding or adhesive bonding between these structural fibers.

High-density/low-density portions may be alternately arranged in the crimping portion 9 . In this way, the rigidity of the crimping portion 9 is relaxed, the fit property is improved, and the liquid introduction force is increased, which is effective.

In addition, on the outside of the area where the crimping portion 9 is formed, a leak-proof groove is formed around the entire periphery, or a continuous leak-proof groove is formed on the front, rear, left and right sides of the area, thereby positioning the pressure through the leak-proof groove. Therefore, the surface sheet 2 and the absorber 4 are further adhered to each other. As a result, movement of body fluid is facilitated, and furthermore, no leakage occurs. Details of the leak prevention trench will be described later.

The respective arrangement patterns of the crimping portions 9 and the dot-like recesses 7 are not particularly limited. As shown in the figure, by arranging the crimping portions 9 in a substantially longitudinally elongated shape in the product length direction, the leak-proof effect is further enhanced. In addition, although not shown in the figure, by arranging the crimping portions 9 substantially vertically elongated in the product width direction, the product can be easily bent and the fit to the body is improved. The dot-shaped recesses 7 may be regularly arranged at equal intervals over the entire area of the absorber, or may be arranged arbitrarily in the longitudinal direction and the width direction of the product.

The relative arrangement pattern of the crimping portion 9 and the dot-shaped concave portion 7 is not particularly limited, but it is preferable to form many concave portions 7 on the opposite surface of the back sheet of the absorber 4 below the crimping portion 9, and to form a plurality of concave portions 7 on the absorbent body 4. A dense structure is formed on the entire surface direction. In this way, the diffusivity of the liquid in the absorber 4 is further promoted. In addition, the liquid permeability in the absorber is also further promoted.

As described later, if the top sheet 2 has stretchability, the top sheet 2 is integrated with the absorber 4 while stretching, and therefore, joining to a deeper position occurs in the thickness direction of the absorber 4 . Therefore, the closeness between the top sheet 2 and the absorber 4 is further increased, and the liquid excreted on the top sheet 2 moves to the absorber 4 more quickly through the crimped portion. Moreover, since the surface sheet 2 is hard to detach from the absorber 4 in the crimping part, the stability of the structure with respect to body movement is also excellent. According to the sanitary napkin 1 of the present invention, by using such an action, it is possible to prevent liquid residue and liquid flow on the top sheet, exhibit excellent absorption performance and leak-proof performance, and obtain a comfortable wearing feeling with a reduced wet feeling.

For the above reasons, the crimping portion 9 needs to be formed on the excretory portion-facing area of the sanitary napkin 1, but it is preferable to form the crimping portion 9 only on the excretory portion-facing area. If the crimping portion 9 is formed over the entire area of the sanitary napkin 1, the rigidity of the sanitary napkin 1 becomes high, which reduces the fit of the sanitary napkin 1 and also easily causes liquid leakage.

As shown in FIG. 1 , it is desirable that the crimping portion 9 extends in the length direction of the sanitary napkin 1 . In this way, the excreted liquid is induced along the crimping portion 9 to flow in the longitudinal direction of the sanitary napkin 1, preventing liquid leakage from the side of the sanitary napkin 1. In addition, there is also an advantage of improving fit without impairing the flexibility of the sanitary napkin 1 in the width direction. The length of the crimping portion 9 is preferably 5 to 20 mm, particularly preferably 5 to 10 mm.

The area of the crimping portion 9 is 1 to 20 mm ² , especially 5 to 10 mm ² , which transfers the liquid discharged from the surface sheet 2 to the absorber 4 more quickly, and the surface sheet 2 is difficult to separate from the absorber. The best point of view. The ratio of the total area of the crimping portion 9 to the area of the surface sheet facing surface of the absorber 4 (hereinafter referred to as the surface sheet facing side area ratio) is 0.01 to 2.0%, especially a low value of 0.05 to 1.0%, This is preferable from the viewpoint of preventing the rigidity of the absorber 4 from being too high.

The pitch of the crimping parts 9 in the longitudinal direction of the sanitary napkin 1 is 5 to 50 mm, especially 5 to 30 mm, which is the best from the viewpoint of making the whole sanitary napkin easy to bend and thus easy to fit the sanitary napkin to the body. In addition, the spacing in the width direction of the sanitary napkin 1 is 5 to 30 mm, especially 5 to 20 mm, so that the so-called surface sheet 2 adheres well to the absorbent body 4, and the excreted liquid flows further quickly to the absorbent body 4. It is the best from the standpoint of transferability and rigidity that does not cause discomfort to the wearer.

In the sanitary napkin 1 of this embodiment, the area ratio of the side facing the back sheet is higher than the area ratio of the side facing the top sheet. In this way, the introduction property of the liquid can be improved sufficiently. From this point of view, the value of the area ratio of the facing surface of the back sheet/the area ratio of the facing surface of the top sheet is preferably 2 to 900, particularly preferably 10 to 500. In addition, the respective values of the area ratio of the side facing the back sheet and the area ratio of the facing side of the top sheet are as described above.

Based on the same reason as the above-mentioned area ratio, it is preferable that in the sanitary napkin 1 of the present embodiment, in the longitudinal direction and/or width direction, the pitch between the crimping portions 9 formed on the opposite side of the surface sheet is larger than The pitch between the dot-like recesses 7 formed on the opposite side of the back sheet.

As shown in FIG. 1 , an anti-leakage groove 10 is formed separately from the crimping portion 9 on the area opposite to the excretory portion in the sanitary napkin 1 . The anti-leakage grooves 10 are located on both sides of the central portion of the excretory portion-facing region where the crimping portion 9 is formed, and form a closed shape surrounding the crimping portion 9 . On the side of the skin-contacting surface of the sanitary napkin 1 , the topsheet 2 and the absorber 4 are joined continuously to form a leak-proof groove 10 . Similar to the crimping portion 9, the leak prevention groove 10 is also formed by embossing.

By forming the anti-leakage groove 10 outside the side portion of the crimping portion 9, the surface sheet 2 is not only between the crimping portions, but also between the crimping portion 9 and the leak-proof groove 10, while being stretched and connected to the absorber 4. join. As a result, not only between the crimping parts, but also between the crimping part 9 and the leak-proof groove 10, the tightness between the top sheet 2 and the absorber 4 is also improved, and the liquid excreted on the top sheet 2 is transferred more rapidly. to the absorbent body 4 to be absorbed. In order to make this effect more remarkable, in the manufacture of the sanitary napkin 1, it is preferable to form the leakage prevention groove 10 first and then form the crimping portion. This is because, by this operation, the top sheet 2 and the absorber 4 are bonded while tension is effectively applied to the top sheet 2 .

The surface sheet 2 of the sanitary napkin 1 of this embodiment has many protrusions 11 on the surface side thereof. The protrusions 11 form an island shape over the entire surface side of the surface sheet 2 . The surface sheet 2 is made of a fibrous material such as nonwoven fabric, and the protrusions 11 are filled with fibers. By forming a large number of convex portions 11, the excreted liquid easily flows into the concave portions between the convex portions 11, and the liquid is quickly removed from the surface of the top sheet 2. Moreover, the compression recovery property of the surface sheet 2 in the thickness direction becomes high, and it has favorable cushioning feeling. In addition, since the contact area with the skin is reduced, heat and humidity are prevented, and the feeling of dryness is further enhanced. From these viewpoints, the height of the convex portion 11 is preferably 0.3 to 5 mm, particularly preferably 0.5 to 3 mm. In addition, when the surface sheet 1 is viewed in plan, the area of the convex portion 11 is preferably 0.5 to 10 mm ² , particularly preferably 1 to 5 mm ² .

On the other hand, the back surface of the surface sheet 2 is flatter than the surface. Specifically, the back surface of the top sheet 2 is substantially flat, or even if it is not flat, it is flatter than the surface of the top sheet 2 . In this way, since the surface sheet facing surface of the absorber 4 is flat, the closeness between the surface sheet 2 and the absorber 4 is improved.

From the viewpoint of further improving the closeness between the top sheet 2 and the absorber 4, it is preferable that the top sheet 2 has stretchability as described above. In order to impart stretchability to the topsheet 2, for example, as the structural fibers of the topsheet 2, elastic fibers that have stretchability in the material itself, or fibers that exhibit stretchability by having a specific three-dimensional structure such as three-dimensionally crimped fibers, can be used. Examples of elastic fibers that show stretchability as the material itself include synthetic rubber such as styrene butadiene, butadiene, isoprene, and neoprene, and elastomer materials such as natural rubber that are obtained by melt spinning. fiber, or synthetic fiber composed of polyurethane and polyester represented by spandex elastic fiber. It is particularly preferable to use three-dimensionally crimped fibers crimped in a helical shape as fibers exhibiting stretchability by having a specific three-dimensional structure. For example, there is a latent crimping fiber in which helical crimping is observed by heat treatment.

The surface sheet 2 is preferably structured such that it gradually becomes denser from the front side to the back side. In this way, the liquid intake is further increased, and the liquid is quickly transferred to the absorbent body 4 . In this case, it may be a structure that becomes denser continuously from the front side to the back side, or may be a structure that becomes denser in steps. For the same reason, it is preferable that the hydrophilicity of the surface sheet 2 gradually increases from the front side to the back side. In this case, the hydrophilicity may increase continuously from the front side to the back side, or the hydrophilicity may increase stepwise.

To make a structure that gradually becomes denser from the surface side of the surface sheet 2 to the back side, for example, the surface sheet 2 can be made into a multi-layer structure of two or more layers, and the layers with higher fiber density are used for the lower layers. layer. Similarly, to make a structure with gradually higher hydrophilicity from the surface side of the surface sheet 2 to the back side, for example, the surface sheet 2 can be made into a multi-layer structure of more than two layers, and the lower the layer, the more used it is. Highly hydrophilic layer. With regard to hydrophilicity, it is preferable to have a characteristic that the hydrophilicity does not decrease even if the liquid is repeatedly absorbed, that is, to have stable durable hydrophilicity.

Specific examples of the surface sheet 2 optimally used in the sanitary napkin 1 of this embodiment include JP-A-2002-165830, JP-A-2002-187228, JP-A-2003- Sheets described in JP-A-126147, JP-A-2003-247155, JP-A-2003-250836, etc.

Next, the optimum manufacturing method of the sanitary napkin of this example will be described. First, the absorber is embossed from one side of the absorber (the side facing the back sheet). In the embossing process, an embossing device consisting of a roll with many protruding pins regularly planted on its peripheral surface and a smooth roll is used. During embossing, the roll may be heated to a predetermined temperature to efficiently form the dot-like recesses 7 .

Next, the surface sheet 2 is overlapped with the absorber 4 so that the surface sheet 2 is located on the absorber 4, and then embossing is applied to the laminate to form grooves, and the surface sheet 2 and the absorber 4 are formed. The anti-leakage grooves 10, 10 are formed by hot pressing. The embossing process is performed by inserting the above-mentioned laminate between a concave-convex roll formed with an annular protrusion corresponding to the leakage prevention groove 10 on the peripheral surface and a back-up roller whose peripheral surface is made of a smooth elastic body.

Next, embossing is performed on the inner side of the leakage prevention groove 10 in the laminated body in which the leakage prevention groove 10 is formed, thereby forming the crimping portion 9 . For this embossing process, an embossing device comprising a combination of a roll and a smooth roll in which many convex pins are regularly implanted on the peripheral surface is used.

In addition, the back sheet 3 is laminated on the absorber side of the laminate, joined by a known method, and the outline is cut into the shape of the sanitary napkin 1 by a known method, and the ends are sealed to obtain the present embodiment. Examples of sanitary napkins1.

According to the manufacturing method of this embodiment, after the leakage prevention groove 10 is formed, the crimping portion 9 is formed inside the two leakage prevention grooves 10, thereby naturally adding a strong tension force on the surface sheet 2, in this The topsheet 2 is fixed to the absorber 4 in this state. In addition, in the crimping portion 9, since the surface sheet is greatly stretched and bonded to the absorber, strong bonding strength can be obtained. The compactness of the absorbent body 4 is also further improved.

As mentioned above, although the preferred embodiment of this invention was demonstrated, this invention is not limited to the said embodiment. For example, in the above-mentioned embodiment, as the surface sheet 2, a sheet having many protrusions 11 on the surface side is used, but a sheet having both the surface side and the back side may be used instead.

In addition, in the manufacturing method of the sanitary napkin of the above-mentioned embodiment, the crimping portion 9 may be formed before the leakage prevention groove 10 is formed, and the leakage prevention groove 10 may be formed thereafter.

In addition, the shape of the crimping portion 9 formed on the surface sheet-facing side of the absorber 4 is not limited to a linear shape. For example, the crimping portion may be composed of a plurality of dotted, dotted line, broken line, curved, polygonal, circular, rectangular, hollow circular or rectangular, polygonal recesses that are actually connected to form a line of recesses. . When the crimping portion is composed of, for example, a plurality of dot-shaped recesses substantially connected in a line, the area of each dot-shaped recess is preferably 0.5 to 2.0 mm ² , particularly preferably 1 to 1.0 mm ² . The distance between the dot-like recesses is preferably 5 mm or less, particularly 3 mm or less, from the viewpoint of effectively inducing the liquid in the extending direction of the crimping portion.

Similarly, the shape of the recesses 7 formed on the side facing the back sheet of the absorber 4 is not limited to a dot shape. For example, the shape of the concave portion can be set to a linear shape, an ellipse shape, a hollow circular shape, or a wave shape. Alternatively, two or more patterns may be combined arbitrarily.

In addition, in the above-mentioned embodiment, the recessed part 7 is formed with the same depth in any position of the absorber 4, but this depth can be changed in each part of the absorber 4. The same applies to the crimping portion 9 . Thus, there is an advantage in that the softness and fit of the sanitary napkin can be improved and desired absorbency can be obtained.

In addition, the above-mentioned examples are examples in which the absorbent article of the present invention is applied to sanitary napkins, but the present invention can also be applied to various absorbent articles such as incontinence pads, textile sheets, and disposable diapers.

As described above, since the absorbent article of the present invention can absorb a large amount of liquid instantaneously, even after the liquid is excreted, it can always maintain a dry state and provide a comfortable wearing feeling. In addition, since the dense structure is formed over the entire area of the absorber, the liquid easily spreads in the planar direction in the absorber, and the absorption capacity of the entire absorber can be thoroughly and effectively utilized. Therefore, the usage-amount of pulp and a superabsorbent polymer can be reduced without wasting the absorption capacity. In addition, since the entire area of the absorber is embossed, the shape retention of the absorber is enhanced and wrinkles are less likely to occur.

Claims (13)

1, a kind of absorbent commodity, it is characterized in that, this absorber of back-sheet opposite face one side pressure flower processing from absorber, on this back-sheet opposite face, form many recesses, thereby on whole direction of this absorber, form the density structure, and, from surficial sheets opposite face one side of absorber, this absorber with the embossed processing of surficial sheets, thereby the excretory portion opposed area in this surficial sheets opposite face forms a plurality of pressure contact portions

In the opposed area of excretory portion at least of above-mentioned surficial sheets opposite face, above-mentioned absorber and above-mentioned surficial sheets are close to.

2, absorbent commodity as claimed in claim 1 is characterized in that, many recesses of the back-sheet opposite face of above-mentioned absorber are formed on the excretory portion opposed area at least.

3, absorbent commodity as claimed in claim 1 is characterized in that, forms many recesses on the back-sheet opposite face of the above-mentioned absorber below the above-mentioned pressure contact portion, thereby is formed on the density structure of whole direction of this absorber.

4, absorbent commodity as claimed in claim 1 is characterized in that, surficial sheets has many protuberances in its surperficial side, and in addition, the back side specific surface of surficial sheets is smooth.

5, absorbent commodity as claimed in claim 4 is characterized in that, surficial sheets becomes the back side one side from its surperficial side direction and become close structure gradually.

6, absorbent commodity as claimed in claim 1 is characterized in that, surficial sheets the back side one side hydrophilic from its surperficial side direction and increased gradually.

7, absorbent commodity as claimed in claim 1 is characterized in that, surficial sheets has retractility.

8, absorbent commodity as claimed in claim 1 is characterized in that, the area summation of sheet material recess is higher than the ratio of the area summation of sheet material pressure contact portion with respect to the area of surficial sheets opposite face with respect to the ratio of the area of the back-sheet opposite face of absorber.

9, absorbent commodity as claimed in claim 1, it is characterized in that, the recess that is formed on the back-sheet opposite face of absorber is the recess of point-like, in addition, is formed at pressure contact portion on the surficial sheets opposite face and is the pressure contact portion of the wire of extending on the length direction of absorbent commodity.

10, absorbent commodity as claimed in claim 1, it is characterized in that, on length direction and/or width, be formed at the spacing between the pressure contact portion of surficial sheets opposite face one side, greater than the spacing between the recess of back-sheet opposite face one side that is formed at absorber.

11, absorbent commodity as claimed in claim 1, it is characterized in that, the area summation of sheet material recess is 1～50% with respect to the ratio of the area of the back-sheet opposite face of absorber, and the spacing between this recess of length direction is 3～10mm, and the spacing of width is 3～10mm.

12, absorbent commodity as claimed in claim 1 is characterized in that, the area summation of sheet material pressure contact portion is 0.01～2.0% with respect to the ratio of the area of the surficial sheets opposite face of absorber, and the area of each pressure contact portion is 1～20mm ², the spacing of the pressure contact portion of length direction is 5～50mm, the spacing of width is 5～30mm.

13, absorbent commodity as claimed in claim 1, it is characterized in that, width central part in above-mentioned excretory portion opposed area is formed with above-mentioned pressure contact portion, has above-mentioned surficial sheets of continuous joint and above-mentioned absorber respectively in the both sides of this central part and the leakproof ditch that forms.

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