JP2008079747A - Absorbent article - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an absorbent article with an absorber consisting of multiple layers, allowing a liquid to speedily move from a skin-abutting face side to a non-skin-abutting face side, capable of efficiently diffusing the liquid inside the absorber and having comfortable wearing feeling. <P>SOLUTION: The sanitary napkin 1 comprises a liquid-permeable front surface sheet 2, an air-permeable but liquid-impermeable rear surface sheet 3, and the liquid retaining absorber 4 interposed between the sheets. The sanitary napkin 1 is substantially oblong. The absorber 4 has one upper-layer absorber 41 layered on a lower-layer absorber 42. The upper-layer absorber 41 is jointed and integrated with the lower-layer absorber 42 at least at the center of the upper-layer absorber 41 by a number of deep recesses 5. The lower-layer absorber 42 has a number of shallow recesses 6 formed in the other area than the part in which the upper-layer absorber 41 is layered. Embossed grooves 7 extending in the longitudinal direction are formed on the outer side of both side edges 41a and 41a of the upper-layer absorber 41 in the longitudinal direction of the sanitary napkin 1, and the front surface sheet 2 and the lower-layer absorber 42 are jointed and integrated with each other by the embossed grooves 7. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an absorbent article, particularly an absorbent article such as a sanitary napkin or an incontinence pad.

  Conventionally, in an absorbent article such as a sanitary napkin, in order to improve adhesion to the body and leakage prevention, it has been known that the absorbent body protrudes from the central part or from the central part to the buttocks. This type of absorbent article prevents gaps between the skin contact surface and the wearer's skin, and body fluid leaks along the skin contact surface of the absorbent article or the wearer's skin. It aims at reducing. Moreover, in this type of absorbent article, there is an absorbent article having a middle and high part, and the adhesion between the skin contact surface of the absorbent article and the excretory part when worn is enhanced.

  The middle and high portions of the absorber may be formed, for example, by laminating an upper layer absorber on a lower layer absorber. In some cases, the thickness of the absorber is increased only at the center, and the absorber having the middle and high portions is integrally formed. In any case, the middle-high part is a part where body fluid is directly excreted, and is formed at a position facing the wearer's liquid excretion part so that the thickness of the absorber is larger than other parts. ing.

  For example, Patent Document 1 discloses a sanitary napkin in which an upper layer absorbent body is formed on a lower layer absorbent body. Patent Document 2 discloses a sanitary napkin having an absorbent body in which middle and high portions are integrally formed.

Japanese Utility Model Publication No. 5-24025 JP 2003-33397 A

  As described above, since the sanitary napkin has the middle and high parts, the liquid absorption holding performance in the central part is enhanced as compared with other parts. However, since the thickness of the absorber is formed large in the middle and high portions, the liquid absorption holding performance in the entire thickness direction of the absorber may not be sufficiently exhibited. For example, the body fluid excreted in the middle and high parts may not move quickly from the skin contact surface side to the non-skin contact surface side, and in such a case, it is difficult to obtain a dry feeling when wearing the napkin.

  Further, in the middle and high parts, even if the excreted body fluid moves quickly from the skin contact surface side to the non-skin contact surface side, the body fluid absorbed in the central portion of the absorber is not removed from the absorber. In this case, the liquid absorption / holding performance of the entire absorbent body may not be sufficiently exhibited because it does not sufficiently diffuse through the absorbent body.

  Therefore, an object of the present invention is to have an absorbent body composed of multiple layers, to allow quick movement of liquid from the skin contact surface side to the non-skin contact surface side, good liquid diffusibility, and a feeling of wearing. The object is to provide an excellent absorbent article.

The present invention comprises a top sheet, a back sheet, and an absorbent body interposed between the two sheets. In a substantially vertically long absorbent article, the absorbent comprises one or a plurality of upper layer absorbents. Is formed by laminating on the body, and one or a plurality of the upper layer absorbers are joined and integrated with the lower layer absorber by a number of deep recesses at least in the center of the upper layer absorber,
Except for the portion where the upper-layer absorber is laminated, the lower-layer absorber is formed with a number of shallow recesses, and the lower-layer absorber is arranged in the longitudinal direction of the absorbent article in the upper-layer absorber. By providing an absorbent article in which embossed grooves extending in the longitudinal direction are formed on the outer sides of both side edges, and the topsheet and the lower layer absorbent body are joined and integrated by the embossed grooves, The above objective has been achieved.

  According to the absorbent article having the multilayered absorbent body of the present invention, the liquid moves quickly from the skin contact surface side to the non-skin contact surface side, the liquid diffusibility in the absorbent body is good, and the wearing feeling Is excellent.

  Hereinafter, the absorbent article of the present invention will be described based on preferred embodiments with reference to the drawings.

The absorbent article 1 of this embodiment is a sanitary napkin, and as shown in FIGS. 1 to 5, a liquid-permeable top sheet 2, a breathable and liquid-impermeable back sheet 3, and an intervening sheet. The liquid-retaining absorbent 4 is provided and is substantially vertically long.
The absorbent body 4 in the sanitary napkin of the present embodiment (hereinafter also simply referred to as a napkin) is formed by laminating one upper layer absorbent body 41 on a lower layer absorbent body 42, and the upper layer absorbent body 41 is At least in the central part of the upper layer absorber 41, the lower layer absorber 42 is joined and integrated by a large number of deep recesses 5, 5,.
Further, in the lower layer absorbent body 42 in the napkin 1 of the present embodiment, a large number of shallow recesses 6, 6... Are formed except for a portion where the upper layer absorbent body 41 is laminated. Embossed grooves 7 extending in the longitudinal direction are formed on the outer sides of both side edges 41a, 41a in the longitudinal direction of the napkin 1 in the upper absorbent body 41 (hereinafter also simply referred to as the napkin longitudinal direction). The top sheet 2 and the lower layer absorber 42 are joined and integrated.

The napkin 1 of the present embodiment will be further described below.
As for the napkin 1, the longitudinal direction is the front part A, the excretion part opposing part B (part which has the excretion part opposing area | region arrange | positioned facing a wearer's liquid excretion part in the center in the width direction) and back part It is divided into C.

Each of the top sheet 2 and the back sheet 3 is vertically long, and the longitudinal direction thereof coincides with the longitudinal direction of the napkin 1 (hereinafter, also simply referred to as napkin longitudinal direction). The topsheet 2 forms a skin contact surface that contacts the wearer's skin when the napkin is worn.
The absorber 4 is vertically long, and its longitudinal direction coincides with the napkin 1. As shown in FIG. 2, the absorber 4 is sandwiched and fixed between the top sheet 2 and the back sheet 3 while being wrapped in a mount 9.

  Each of the top sheet 2 and the back sheet 3 extends from the longitudinal front and rear ends of the absorbent body 4 and is joined to each other by a known joining method such as heat sealing at the extended portion to form an end seal portion. ing. Moreover, each of the top sheet 2 and the back sheet 3 extends from both ends of the absorbent body 4 in the width direction and is similarly joined.

The absorber 4 will be further described below.
As shown in FIGS. 1 and 2, the absorber 4 has a laminated structure of an upper layer absorber 41 and a lower layer absorber 42. Each of the upper layer absorber 41 and the lower layer absorber 42 is vertically long, and the longitudinal direction thereof coincides with the napkin longitudinal direction. Each of the upper layer absorbent body 41 and the lower layer absorbent body 42 is preferably formed from pulp fibers or the like.

  The lower layer absorbent body 42 is smaller than the napkin 1 and has substantially the same shape. The upper layer absorber 41 is formed such that the length and width thereof are smaller than the lower layer absorber 42. The upper layer absorbent body 41 is laminated on the body surface side at the center of the lower layer absorbent body 42, and forms the middle and high parts of the absorbent body 4. More specifically, the upper layer absorbent body 41 is disposed in the central part of the napkin 1 in the excretory part facing part B in the width direction (hereinafter also simply referred to as the napkin width direction). Extends to the front part A and the rear part C, respectively. That is, the upper layer absorbent body 41 extends from the front part A to the rear part C through the excretory part facing part B. The upper layer absorbent body 41 is a part that receives the body fluid that has passed through the top sheet 2 while facing the wearer's liquid excretion portion when the napkin is worn.

  The upper layer absorber 41 is joined to the lower layer absorber 42 by a large number of deep recesses 5, 5. In the present embodiment, the upper-layer absorber 41 is integrated with the lower-layer absorber 42 by deep recesses 5, 5... Between the central portion and the entire periphery. The deep recesses 5 are circular in plan view, are discretely formed discontinuously, and are formed in a houndstooth arrangement pattern as a whole. In the present embodiment, each of the deep recesses 5, 5... Is formed by embossing.

Each of the deep recesses 5, 5... Is formed so as to extend from the non-skin contact surface side of the lower layer absorbent body 42 to the inside of the upper layer absorbent body 41 as shown in FIG. Each of the deep recesses 5, 5... Forms a recess on the non-skin contact surface side of the absorber 4. In the deep concave portion 5, a part of the fibers constituting the lower layer absorber 42 is consolidated into the fibers constituting the upper layer absorber 41 in a state of entering the upper layer absorber 41.
The upper layer absorber 41 and the lower layer absorber 42 are joined by a large number of deep recesses 5, 5,.

  In the portion where the deep recess 5 of each of the upper layer absorber 41 and the lower layer absorber 42 is formed, the fibers constituting each absorber are consolidated and the density is increased. The deep concave portion 5 has a capillary force increased by consolidation, and plays a role as a liquid guide path through which the liquid is transmitted from the upper layer absorber 41 to the lower layer absorber 42.

  The absorber 4 having a large number of deep recesses 5, 5... Can be produced, for example, as follows. First, the upper layer absorbent body 41 is laminated on the lower layer absorbent body 42 to form a laminated body, and then the laminated body is embossed on the peripheral surface so that the non-skin contact surface side is embossed. It is sent to an embossing device having an embossing roll in which convex portions are regularly arranged and an anvil roll arranged to face the embossing roll, and embossing is performed. In the embossing, it is preferable to adjust the distance between the embossing roll and the anvil roll, the height of the embossing projection, and the like so that the embossing projection reaches the inside of the upper layer absorber 41.

  In addition, as shown in FIGS. 2 and 3, the lower layer absorber 42 has a large number of portions except for a portion where the upper layer absorber 41 is laminated and a region Q having a predetermined width outside the entire periphery of the upper layer absorber 41. Shallow recesses 6, 6... Are formed. In FIG. 3, the region R in which the shallow recesses 6, 6... In the lower layer absorber are formed is indicated by hatching. In FIG. 3, the region Q is a portion sandwiched between a portion where the upper absorber 41 is laminated and a region R where the shallow recesses 6, 6... Are formed. In the present embodiment, each of the shallow recesses 6, 6... Is formed by embossing.

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In the present specification, “deep” of the deep recess 5 and “shallow” of the shallow recess 6 have a meaning of relatively distinguishing the depth of the recess, respectively. More specifically, in the present embodiment, the deep concave portion 5 is formed so that the upper layer absorber 41 and the lower layer absorber 42 are joined and integrated, and the shallow concave portion 6 is formed only in the lower layer absorber 42. .

  The shallow concave portions 6 are circular in plan view, are discretely formed discontinuously, and are formed in a staggered arrangement pattern as a whole. In the present embodiment, the shallow recesses 6 are arranged such that the distance between the shallow recesses 6 is smaller than the distance between the deep recesses 5. This is for imparting a capillary force gradient between the deep concave region and the shallow concave region, and has a function of promoting the liquid transfer to the outside. As another method for providing such a capillary force gradient, a method of increasing the area of each recess and increasing the ratio of the recess in the absorbent body 4 may be used.

  As shown in FIG. 2, each of the shallow concave portions 6, 6... Is formed so as to affect the inside of the lower layer absorber 42 from the non-skin contact surface side of the lower layer absorber 42. Each of the shallow recesses 6, 6... Has a recess on the non-skin contact surface side of the lower layer absorbent body 42. In the portion where the shallow concave portion 6 of the lower layer absorbent body 42 is formed, the fibers constituting the absorbent body are consolidated, resulting in a high density and an increased capillary force. Further, each of the deep recesses 5, 5... Is formed deeper than each of the shallow recesses 6, 6.

  The absorber 4 having a large number of shallow recesses 6, 6... And having a large number of deep recesses 5, 5. An embossing roll in which embossing convex portions are regularly arranged on the peripheral surface so that the non-skin contact surface side is subjected to embossing, and the absorbent body 4 on which a large number of deep concave portions 5, 5. It is sent to an embossing device equipped with the arranged anvil rolls and embossed. In this embossing, it is preferable to provide a region where the embossing convex portion does not exist on the embossing roll so that the embossing convex portion extends only inside the lower layer absorbent body 41. Moreover, it is also preferable to adjust the space | interval of an embossing roll and an anvil roll, the height of the convex part for embossing, etc. In addition, after forming a large number of shallow recesses 6, 6... In a laminate of the upper layer absorber 41 and the lower layer absorber 42, the upper layer absorber 41 and the lower layer absorber 42 are stacked, and a large number of deep recesses 5, 5. ... may be formed.

(The embossing roll side of the absorbent body 4 is the non-skin contact surface side, and the anvil roll side is the skin contact surface side.)
Moreover, the embossing roll side (skin contact surface side in the case of FIG. 2) of the absorber 4 in the part where the deep recess 5 or the shallow recess 6 is formed is the anvil roll side (non-skin contact surface side in the case of FIG. 2). ) May also be depressed. This is considered because the fibers constituting the skin contact surface side of the absorbent body 4 move toward the non-skin contact surface side in order to stabilize the state in which each of the embossed portions is formed. In addition, since the influence of the consolidation reaches the non-processed surface side, it has a liquid introduction effect.

Next, the embossed groove 7 will be further described below.
In the lower layer absorber 42, a pair of embossed grooves 7, 7 are formed on both sides of the upper layer absorber 41. As shown in FIG. 3, the pair of embossed grooves 7 and 7 are formed in a region Q where the shallow concave portion 6 is not formed. That is, the shallow concave portion 6 is not formed in the region Q where the embossed groove 7 is formed.

  As shown in FIG. 4, each of the pair of embossed grooves 7, 7 has three portions 7 a, 7 b, 7 c that are convexly curved outward in the width direction of the napkin 1 in the longitudinal direction of the napkin 1. A convexly curved portion 7b having a shape is positioned outside the napkin width direction of the excretory part facing region (the central part of the excretion part facing part B in the napkin width direction) of the napkin 1. Yes. The part 7 b is located outside the side edge 41 a in the longitudinal direction of the upper layer absorbent body 41 in the excretory part facing part B.

More specifically, the longitudinal front and rear end portions of the pair of embossed grooves 7 and 7 are connected by embossed grooves extending in the napkin width direction. The embossed groove extending in the napkin width direction has a shape protruding outward in the napkin longitudinal direction. That is, the lower-layer absorber 42 is formed with a closed annular emboss groove including a pair of emboss grooves 7 and 7.
Moreover, the surface sheet 2 is joined and integrated with the lower layer absorber 42 by the annular embossed groove.

  The annular embossed groove portion is increased in rigidity because the fibers constituting the lower layer absorbent body 42 are consolidated to increase the density. Further, it has a convex shape and an annular shape facing outward in the longitudinal direction of the napkin. Therefore, the portion of the lower layer absorber 42 inside the annular embossed groove has high surface shape stability, and generation of wrinkles and twists having a plurality of irregularities is suppressed. Furthermore, since the upper layer absorbent body 41 is bonded onto the portion of the lower layer absorbent body 42 inside the annular embossed groove, the integrity of the upper layer absorbent body 41 and the lower layer absorbent body 42 is improved. Through the joining, it is stably increased throughout use.

  Therefore, the body fluid absorbed by the upper layer absorbent body 41 quickly moves to the lower layer absorbent body 42 that has high adhesion and is integrated with the upper layer absorbent body 41, and is first absorbed and held in the central portion of the absorbent body 4. At this time, the body fluid moves mainly through the deep recesses 5, 5. Further, as shown in FIG. 2 and FIG. 4, since the deep recess 5 is formed from the lower absorber 42 side, the density of the lower absorber 42 is the density of the upper absorber 41 around the deep recess 5. The liquid introduction effect to the lower layer absorber 42 is further enhanced.

  In the region Q, the body fluid absorbed and held in the central portion of the absorbent body 4 is consolidated into the lower layer absorbent body 42 toward the outside of the absorbent body 4 through the annular embossed groove having a high capillary force. The inside is moved to the region R. Further, the body fluid that has moved to the region R travels through the numerous shallow recesses 6, 6, and further diffuses toward the outside of the lower layer absorber 42, so that the absorption performance of the lower layer absorber 42 is efficiently used. . As a result, a good state in which the body fluid quickly moves from the upper layer absorber 41 to the lower layer absorber 42 is maintained.

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Moreover, since the said groove | channel forms the convex shape which bulges outward in the excretion part opposing area | region B, in the center, the spreading | diffusion of the side direction of the liquid to a groove | channel is loose, and when a liquid contacts a groove | channel Diffusion in the longitudinal direction of the groove having a high density and retention / diffusion of the liquid by the shallow concave portion 6 occur. On the other hand, in the front part and the rear part of the excretory part facing region B, diffusion into the groove occurs relatively quickly, and diffusion in the longitudinal direction of the groove is dominant. The liquid in the shallow concave part 6 is smaller than that in the central part. Reach is slow. That is, the positional relationship of the grooves in the region Q is changed, the groove is close to the shallow concave portion 6 in the center of the excretory portion facing region B, and is close to the deep concave portion 5 before and after the excretory portion facing region B. For this reason, not only the liquid retainability at the central part is high, but also problems such as liquid return can be suppressed, and further, leakage in the side direction and the oblique direction can be suppressed.

  Moreover, when there is much quantity of the bodily fluid excreted, a part of bodily fluid excreted on the surface sheet 2 may be directly absorbed by the lower layer absorbent body 42 through the annular embossed groove. .

  The dimensions and the like of the napkin 1 of the present embodiment are preferably designed as appropriate according to the specific application. The dimensions of the upper layer absorber 41, the lower layer absorber 42, the deep concave portion 5, the shallow concave portion 6 and the embossed groove 7 are preferably designed as appropriate according to the size of the napkin 1 and its specific application.

For example, when the napkin 1 is used for a long period of time such as when the amount of menstrual blood is large or at night, the napkin 1 is preferably designed as follows.
The dimensions of the napkin 1 are preferably 20 to 50 cm in length, particularly 27 to 50 cm, and 5 to 10 cm in width, particularly 7 to 10 cm.
The dimensions of the upper layer absorber 41 are preferably 5 to 20 cm in length, particularly 7 to 17 cm, and 2 to 4.5 cm in width, particularly 2.5 to 3.5 cm. The basis weight of the upper layer absorbent body 41, 100 to 1000 g / m ^2, it is preferred that particularly 150~600g / m ^2.
The dimensions of the lower layer absorber 42 are preferably 15 to 50 cm in length, particularly 25 to 45 cm, and 5 to 10 cm in width, particularly 7 to 10 cm. Moreover, it is preferable that the basic weight of the lower layer absorber 42 is 100-600 g / m < ² >, especially 150-300 g / m < ² >.

Moreover, the diameter of the deep recessed part 5 is 0.8-4 mm, It is preferable that it is especially 1-3 mm. The distance between the deep recesses 5 (for example, the distance between the centers) is preferably 2 to 10 mm, particularly 3 to 7 mm in the napkin longitudinal direction, and 2 to 10 mm, particularly 3 to 7 mm, in the napkin width direction. Moreover, it is preferable that the depth of the deep recessed part 5 is 2 to 50% with respect to the thickness of the part in which the upper layer absorber 41 in the absorber 4 is laminated | stacked, especially 10 to 40%.
The diameter of the shallow recess 6 is preferably 0.8 to 4 mm, particularly 1 to 3 mm. Moreover, it is preferable that the distance (for example, distance between centers) between the shallow recessed parts 6 is 2-10 mm in a napkin longitudinal direction, especially 3-7 mm, 2-10 mm in a napkin width direction, especially 3-7 mm. Moreover, it is preferable that the depth of the shallow recessed part 6 is 2-50% with respect to the thickness of the lower layer absorber 42, especially 10-40%.

Moreover, when the lower layer absorber 42 is viewed in plan, the width of the region Q outside the entire periphery of the upper layer absorber 41 is preferably 5 to 15 mm, particularly 7 to 12 mm. The width of the region Q may be constant or may be changed as long as it falls within the range.
Furthermore, it is preferable that the width of the embossed groove 7 is 0.5 to 4 mm, particularly 0.8 to 2 mm.

Next, each material which forms the napkin 1 of this embodiment is demonstrated.
First, the material for forming the surface sheet 2 is not particularly limited as long as it is a liquid-permeable sheet. For example, as shown in FIGS. 5 (a) and 5 (b), a large number of protrusions projecting to the skin contact surface side. It is preferable to use a concavo-convex sheet having convex portions 24.
The topsheet 2 made of a concavo-convex sheet in the present embodiment includes a first fiber layer 21 on the skin contact surface side and a second fiber layer 22 on the non-skin contact surface side. The first fiber layer 21 and the second fiber layer 22 are partially heat-sealed to form a heat-sealed portion 23 as a recess. The first fiber layer 21 forms a large number of convex portions 24 having compressive elasticity at portions other than the heat fusion portion 23.

  The concavo-convex sheet is obtained by partially heat-sealing the first fiber layer 21 and the second fiber layer 22 made of a fiber assembly in a predetermined pattern by hot embossing, and then heat the second fiber layer 22 in the horizontal direction. Obtained by contraction. More specifically, for example, heat fusion by heat embossing is performed by using, for example, an embossed surface (such as a peripheral surface of an embossing roll) in which a large number of embossed spins are regularly arranged, the first fiber layer 21 and the second fiber layer 22. This is performed by melting the constituent fibers of the first fiber layer 21 and / or the second fiber layer 22 in the portion that is press-contacted to the first fiber layer 21 side of the laminated body and is thermally pressed by each pin.

  The heat shrinkage of the second fiber layer 22 is, for example, configured by forming the second fiber layer 22 from heat-shrinkable fibers or including the heat-shrinkable fibers in the second fiber layer 22, The heat treatment is performed on the second fiber layer 22 at the same time as the second fiber layer 22 is heat-sealed or after both are heat-sealed. A large number of convex portions 24 are produced by causing the second fiber layer 22 to thermally contract in the horizontal direction and deforming portions other than the heat fusion portion 23 of the first fiber layer 21 into a convex shape.

It is preferable that the large number of heat fusion portions 23 are regularly formed in a dotted pattern and a zigzag pattern. The distance between the heat fusion parts 23 is substantially constant.
Each convex portion 24 has a dome shape, and the inside thereof is filled with fibers constituting the first fiber layer 21. In addition, the interface between the first fiber layer 21 and the second fiber layer 22 in the portion where each convex portion 24 is formed is not bonded but is in a close contact state.

  The constituent fibers of the first fiber layer 21 are preferably those that do not substantially have heat shrinkability, or that do not undergo heat shrinkage below the heat shrink temperature of the constituent fibers of the second fiber layer 22.

  The constituent fiber of the second fiber layer 22 is preferably made of a thermoplastic polymer material and having heat shrinkability. Moreover, it is preferable that the constituent fibers exhibit an elastomeric behavior even after shrinkage. Examples of such fibers include latently crimpable fibers. The content ratio of the latent crimpable fibers in the second fiber layer 22 is preferably 40 to 100% by weight. The latent crimpable fiber can be handled in the same manner as a conventional nonwoven fabric fiber before being heated, and has a property that a helical crimp is developed and contracted by heating at a predetermined temperature. Fiber. By using latently crimpable fibers, both heat shrinkability and elastomeric behavior can be expressed simultaneously.

  The latent crimpable fiber is composed of, for example, an eccentric core-sheath type or side-by-side type composite fiber composed of two types of thermoplastic polymer materials having different shrinkage rates. Examples thereof include those described in JP-A-9-296325 and Japanese Patent No. 2759331. The second fiber layer 22 includes, for example, such latent crimpable fibers, and simultaneously or after heat fusion with the first fiber layer 21, the crimps of the fibers are expressed by heating, Can be shrunk.

  Moreover, the material used for the conventional absorbent article can be used as a forming material of the back sheet 3, the upper layer absorbent body 41, and the lower layer absorbent body 42 constituting the napkin 1 of the present embodiment.

  According to the napkin 1 of this embodiment mentioned above, since the movement of the liquid from the skin contact surface side to the non-skin contact surface side is quick, dry feeling is excellent. Moreover, since the absorption performance of the lower layer absorbent body 42 is used efficiently, it is preferably used particularly when the amount of menstrual blood is large or when it is used for a long time use such as night use.

The absorbent article of the present invention is not limited to the above-described embodiment, and can be appropriately changed without departing from the gist of the present invention.
For example, the absorbent article of the present invention may have a plurality of upper layer absorbent bodies. In this case, each of the plurality of upper layer absorbent bodies may be laminated in the thickness direction of the absorbent article, and each of the plurality of upper layer absorbent bodies is arranged in the longitudinal direction or the width direction of the absorbent article. May be.

  Moreover, in the napkin 1 of this embodiment, the deep recessed part 5 and the shallow recessed part 6 were each formed from the non-skin contact surface side of the absorber 4, However, The deep recessed part 5 and / or the shallow recessed part 6 are absorbers. 4 may be formed from the skin contact surface side. Further, in the napkin 1 of the present embodiment, the absorbent body 4 is wrapped in the mount 9 in a state where the upper layer absorbent body 41 is laminated on the lower layer absorbent body 42, but from the viewpoint of workability of the napkin 1. Each of the upper layer absorber 41 and the lower layer absorber 42 may be wrapped with a mount.

  Furthermore, the napkin 1 of this embodiment may have a pair of wing parts in the excretion part facing part B. Moreover, the napkin 1 may have a pair of side leak-proof part in the both sides of the napkin longitudinal direction in the skin contact surface side. Further, the napkin 1 may have a pair of back flap portions at the rear portion B.

  Furthermore, the absorbent article of the present invention may be a sanitary napkin, but may be a panty liner or an incontinence pad.

Drawing 1 is a top view showing one embodiment of a sanitary napkin as an absorptive article of the present invention. 2 is an enlarged cross-sectional view of the sanitary napkin of FIG. FIG. 3 is a plan view showing a region where a shallow recess is formed in the sanitary napkin of FIG. 1. 4 is an enlarged plan view showing an embossed groove in the sanitary napkin of FIG. 5 (a) and 5 (b) are enlarged views of a part of the top sheet of the sanitary napkin of FIG. 1, (a) is a longitudinal sectional perspective view, and (b) is (a). It is a YY line expanded sectional view shown.

Explanation of symbols

1 Sanitary napkin (absorbent article)
2 Top sheet 3 Back sheet 4 Absorber 41 Upper layer absorber 41a Side edge 42 Lower layer absorber 5 Deep recess 6 Shallow recess 7 Embossed groove 9 Mount A Front part B Excretion part opposite part C Rear part

Claims (5)

It comprises a top sheet, a back sheet and an absorbent body interposed between both sheets, and in a substantially vertically long absorbent article,
The absorber is formed by laminating one or a plurality of upper layer absorbers on a lower layer absorber,
The one or more upper layer absorbers are joined and integrated with the lower layer absorber by a number of deep recesses at least in the central portion of the upper layer absorber,
In the lower layer absorber, many shallow recesses are formed except for the portion where the upper layer absorber is laminated,
In the lower layer absorbent body, embossed grooves extending in the longitudinal direction are formed on the outer sides of both side edges in the longitudinal direction of the absorbent article in the upper layer absorbent body, and the topsheet and the lower layer are formed by the embossed grooves. An absorbent article in which the absorbent body is joined and integrated.   The absorbent article according to claim 1, wherein the shallow concave portion is not formed in a region where the embossed groove is formed.   The absorbent article according to claim 1, wherein the absorbent article has one vertically long upper absorbent body, and the upper absorbent body is laminated at a central portion of the lower absorbent body.   The embossed groove has a shape in which a portion that is convexly curved outward in the width direction of the pre-absorbent article has one or more continuous shapes in the longitudinal direction of the absorbent article, and is curved convexly. The absorbent article according to claim 3, wherein the portion is located outside the excretory part facing region in the absorbent article.   Each of the said deep recessed part and the said shallow recessed part is an absorbent article in any one of Claims 1-4 currently formed from the non-skin contact surface side of the said absorber.

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