TWI555520B - Absorbent items - Google Patents

Description

Absorbent article

The present invention relates to an absorbent article in which a second sheet is disposed between a surface sheet and an absorbent body.

Patent Document 1 discloses a liquid-permeable surface layer, a liquid-impermeable back layer, and an absorbent article disposed between the surface layer and the back layer, which are composed of two sheets of hot air non-woven fabric. An absorbent article constituting a surface layer (for example, see Patent Document 1). In the absorbent article of Patent Document 1, the surface layer and the absorbing layer are joined by heat fusion, and a plurality of concave portions are formed from the surface layer toward the absorbing layer.

According to the absorbent article configured as described above, the surface layer and the absorbing layer are closely adhered by the concave portion, and since the body fluid easily enters the concave portion, the body fluid can be introduced by the two sheets of hot air non-woven fabric constituting the surface layer, and the absorbent layer can be absorbed by the absorbent layer. Absorb the introduced body fluid.

[Previous Technical Literature] [Patent Literature]

[Patent Document 1] Japanese Laid-Open Patent Publication No. 2003-291234 (Fig. 3, etc.)

However, the absorbent article described in Patent Document 1 has the following problems.

The body fluid discharged by the wearer is introduced by two sheets of hot air non-woven fabric constituting the surface layer. However, in the region in which the concave portion is formed in the surface layer, since the surface layer is compressed in the thickness direction, the volume of the surface layer becomes low. Therefore, there is a concern that the introduction of body fluids is lowered. When the introduceability of the body fluid is lowered, the body fluid tends to remain on the surface layer, which may cause a problem that the mounting feeling is deteriorated.

In view of the above, an object of the present invention is to provide an absorbent article which can improve the introduceability of a body fluid and can suppress deterioration of the feeling of attachment.

In order to solve the above problems, the absorbent article of the present invention includes a liquid-permeable surface sheet (surface sheet 10), a liquid-impermeable outer sheet (outer sheet 20), and the surface sheet and the aforementioned surface sheet. An absorber (absorbent body 30) between the outer sheets; and a second sheet (second sheet 15) provided between the surface sheet and the absorber and covering a part of the absorber, and having the absorption a first region (first region R1) where the surface on the skin contact side of the body abuts on the second sheet; and a second region where the surface on the skin contact side of the absorber contacts the surface sheet (second In the absorbent article (absorbent article 1) of the region R2, the absorbent body is formed by compressing the skin in the thickness direction (thickness direction T) from the skin contact side of the absorbent body toward the non-skin contact side. The press section of the absorber (the press section 31), along the front The surface sheet and the second sheet are disposed on the surface of the absorbent body on the skin contact side, and a concave portion along the press portion of the absorbent body is formed on a surface on the skin contact side of the absorbent article. In the recessed portion 11 and the second recessed portion 12), the depth of the recessed portion in the first region is smaller than the depth of the recessed portion in the second region.

Since the depth of the concave portion of the first region where the second sheet abuts the absorber is smaller than the depth of the recess of the second region where the surface sheet is in contact with the absorber, the recess of the first region can be formed relatively small. It is also possible to suppress the diffusion of the body fluid on the surface of the surface sheet on the contact side of the skin. Further, in the concave portion of the first region, only the thickness of the second sheet disposed in the first region is shallower than that of the concave portion in the second region, and the second sheet can be held by the introduction of the body fluid. Therefore, it is possible to provide an absorbent article in which the introduction property of the body fluid is ensured in the first region, and the body fluid is prevented from remaining on the surface sheet, and the deterioration of the mounting feeling can be suppressed.

[Formation for carrying out the invention]

Hereinafter, an absorbent article according to an embodiment will be described with reference to the drawings. In the present embodiment, the absorbent article 1 is an unfolded disposable diaper. In the present embodiment, the unfolded type diaper is not in a state in which the pants-type diaper is formed in advance, but is in a state in which it is unfolded before use, and is fixed by a predetermined portion of the article by a belt or the like. in User's disposable diaper. Further, the disposable diaper may be a pants type diaper, a disposable paper diaper, or a disposable paper diaper.

In the following description of the drawings, the same or similar elements are denoted by the same or similar reference numerals. However, if the drawing is a pattern, it is necessary to pay attention to the difference between the ratio of each size and the reality. Therefore, the specific dimensions and the like must be judged by referring to the following description. Moreover, it is a matter of course that the drawings have mutually different dimensional relationships and ratios.

Fig. 1 is a plan view of the absorbent article 1. Fig. 2 is a cross-sectional view taken along the line X1-X1' shown in Fig. 1, and Fig. 3 is a cross-sectional view taken along the line X2-X2' shown in Fig. 1. The absorbent article 1 has a front waistline region S1 disposed on the wearer's ventral side, a rear waistline region S2 disposed on the wearer's back side, and a wearer's underarm, positioned in the front waistline region. The underarm region S3 between S1 and the back waistline region S2.

The absorbent article 1 has a liquid-permeable surface sheet 10, a side sheet 60, a second sheet 15, a liquid-impermeable outer sheet 20, and an absorber 30. The absorbent article 1 has a front-rear direction L extending toward the front side of the wearer and the rear side of the body; a width direction W orthogonal to the front-rear direction; an inner direction T1 facing the wearer; and an opposite side to the inner direction The outer direction T2 (from the side away from the wearer). The inner direction T1 is the skin contact side of the surface sheet or the like, and the outer direction is the non-skin contact side.

The surface sheet 10 is provided on the skin contact side of the skin that contacts the wearer. The surface sheet 10 is formed of a hydrophilic nonwoven fabric, a woven fabric, an open plastic film, and a liquid-permeable sheet such as an open hydrophobic nonwoven fabric.

The non-skin abutting side (outer side) of the surface sheet 10 is joined The second sheet 15 is. The second sheet 15 is disposed between the surface sheet 10 and the absorber 30. By providing the second sheet 15, the absorption rate of the body fluid can be quickly increased, and the backflow of the body fluid after absorption can be suppressed. As the second sheet 15, for example, a hot air non-woven fabric, an apertured film, or the like can be used.

The dimension of the second sheet 15 in the width direction and the dimension in the front-rear direction are shorter than those of the absorber 30. The second sheet 15 is disposed to cover a part of the absorber 30.

The side sheet 60 is positioned in the inner direction T1 from the surface sheet 10, and is disposed so as to cover both outer end portions in the width direction of the surface sheet 10, respectively. A liquid impermeable sheet or the like is used for the side sheet 60. The side sheet 60 is a surface that is next to the skin contact side of the surface sheet 10 via an adhesive.

The inner end portion in the wide direction of the side sheets 60 is such that the side sheets overlap each other. In a portion where the side sheets are overlapped with each other, a leakage preventing elastic member 61 is provided in a state of being elongated in the front-rear direction L. On the other hand, a leakage preventing wall that prevents the side leakage of the excrement by the side sheet 60 and the leakage preventing elastic member 61 is formed. The leakage preventing walls are provided at both end portions in the width direction of the absorbent body 30 along the front-rear direction of the absorbent article 1.

The exterior sheet 20 has a back surface nonwoven fabric 21 that is in contact with the back surface of the clothes, and a liquid-impermeable back surface film 22 that is formed on the skin side of the back surface nonwoven fabric 21 and is formed of a waterproof film (for example, polyethylene). The back film 22 is formed of a moisture permeable or moisture impermeable film.

The absorber 30 is provided between the exterior sheet 20 and the surface sheet 10 and the second sheet 15. The absorbent body 30 absorbs the body fluid of the wearer. Absorber 30 It is formed by absorbing an absorbent core such as pulp or a superabsorbent polymer, and an absorbent sheet such as a tissue coated with an absorbent core.

The pressurizing portion 30 is formed with a press portion 31 that is compressed in the thickness direction T. The press portion 31 is compressed from the inner direction T1 toward the outer direction T2 and recessed from the inner direction toward the outer direction. A concave portion disposed along the press portion 31 of the absorber 30 is formed on the surface on the skin contact side of the absorbent article. This concave portion is formed by the surface sheet 10 and the second sheet 15 being disposed along the press portion 31 of the absorber 30. In the embodiment of the present embodiment, the surface 1A on the skin contact side of the absorbent article is constituted by the surface on the skin contact side of the surface sheet. The cross-sectional shape of the absorber, the surface sheet, and the second sheet will be described in detail later.

The side sheet 60 and the exterior sheet 20 are joined to each other in the wider direction than the surface sheet 10. The outer end portions of the side sheets 60 and the outer sheet 20 in the width direction are recessed toward the inner side in the wide direction in the crotch region S3. The area around the depression of the crotch region S3 is a leg circumference region that is disposed along the leg circumference of the wearer. A leg-surrounding elastic material 35 that expands and contracts in the front-rear direction is disposed in the leg-surrounding region.

The leg-surrounding elastic members 35 are arranged along the front-rear direction L, and three are arranged at intervals in the width direction. The leg-surrounding elastic material 35 is disposed between the side sheet 60 and the back film 22 in a state of being elongated in the front-rear direction L.

The front waistline region S1 and the rear waistline region S2 of the side sheet 60 and the exterior sheet 20 are extended outward in the width direction from the crotch region S3 to form a front side flap and a rear side flap.

In the rear side flap of the rear waistline region S2, a side sheet 60 is provided The outer sheet 20 further has a catching member 41 that extends outward in the width direction. The engaging member 41 is joined to the exterior sheet 20. The engaging member 41 is extended outward in the width direction from the surface sheet 10. The engaging member 41 is constituted by a hook portion 41A that is engaged with a target portion (not shown) to be described later, and a fixing piece 41B to which the hook portion 41A is attached.

In the hook portion 41A, a hook (not shown) stuck to the target portion is formed in plural. The engaging member 41 and the target portion constitute a locking system for the hook and the ring, and the wearing member is hooked by the hook, and the engaging member 41 functions as a hook. The target portion is a back surface nonwoven fabric 21 that is provided on a surface that is on the outer side of the front waistline region S1. The target portion is a type that constitutes a hook provided on the hook portion 41A of the engaging member 41, and functions as a ring.

When the crotch region S3 is in contact with the crotch portion of the wearer, the front waistline region S1 is placed on the abdomen side of the wearer, and the rear waistline region S2 is placed on the back side of the wearer. By attaching the engaging member 41 to the target portion and covering the waist circumference of the wearer, the front waist region and the rear waist region are disposed, and the absorbent article 1 is attached to the wearer.

Next, the cross-sectional shape of the absorbent article 1 thus configured will be described in detail with reference to FIGS. 2 and 3. FIG. 2 is a cross-sectional view showing a cross section of X1-X1 shown in FIG. 1 , and is a cross-sectional view of the first region R1 where the surface 30A of the skin contact side of the absorbent body 30 abuts on the second sheet 15 . 3 is a cross-sectional view of the cross section of X2-X2' shown in FIG. 1, and is a cross-sectional view of the second region R2 where the surface 30A of the absorbent body 30 abuts against the surface sheet 10.

The first region R1 is in the plane view shown in Fig. 1, and is arranged in the second thin In the region of the sheet 15, the second region R2 is a region in which the second sheet 15 is not disposed on the absorber 30 in the region in which the absorber 30 is disposed in the plan view shown in FIG. The second region R2 is a region around the first region R1 and is disposed on both outer sides in the width direction and the outer sides in the front-rear direction than the first region R1.

In the first region R1, the surface sheet 10 and the second sheet 15 are disposed on the absorber 30, and the side sheet 60 is disposed in a part of the region. The surface sheet 10 is disposed in the second region R2; and the side sheet 60 is disposed in a portion of the region. The top sheet 10 and the second sheet 15 are disposed along the surface 30A of the absorbent body on the skin contact side, and are also disposed along the surface of the press portion 31. By arranging the surface sheet 10 and the second sheet 15 along the press portion 31 of the absorber 30, a concave portion along the press portion 31 of the absorber 30 is formed in the surface 1A on the skin contact side of the absorbent article 1 in plurality. The concave portion is formed along the shape of the press portion 31, and the surface sheet and the second sheet itself are not formed to be recessed in the thickness direction, but the surface sheet and the second sheet itself are formed to have the same thickness as the periphery.

Further, the inner end portion of the side sheet 60 in the wide direction is separated from the surface sheet 10, and is contracted in the front-rear direction L by the above-described leakage preventing elastic member 61, and is configured to rise in the inward direction T1 from the surface sheet 10. Therefore, no recess is formed in the side sheet 60.

Fig. 4 (a) is an enlarged cross-sectional view of a portion A of Fig. 2, and is a cross-sectional view of the absorbent article 1 of the first region R1. Fig. 4 (b) is an enlarged cross-sectional view of the portion B of Fig. 3, and is a cross-sectional view of the absorbent article 1 in the second region R2. The recess has a first recess formed in the first region R1 11; and a second recess 12 formed in the second region R2.

The first concave portion 11 is formed on the surface sheet 10 by arranging the surface sheet 10 and the second sheet 15 along the press portion 31 of the absorber 30 in the first region R1. In the first region R1, the second sheet 15 is disposed between the surface sheet 10 and the press portion 31. On the other hand, the second concave portion 12 is formed on the surface sheet 10 by arranging the surface sheet 10 along the press portion 31 of the absorber 30 in the second region R2. In the second region R2, the second sheet 15 is not disposed between the surface sheet 10 and the press portion 31, and the surface sheet 10 is directly connected to the press portion 31.

The surface sheet 10 and the second sheet 15 are not compressed in the thickness direction, and the thickness Ta of the surface sheet 10 and the thickness Tb of the second sheet 15 are substantially constant. For example, when the surface sheet and the second sheet itself are pressed, the volume of the surface sheet or the like becomes small, and there is a concern that the introduction property of the body fluid is lowered. However, the surface sheet or the like is disposed along the press portion, and since the volume can be secured, the decrease in the introduceability can be suppressed.

When the first recessed portion 11 and the second recessed portion 12 are compared, the depth of the first recessed portion 11 is smaller than the thickness Ta of the second sheet 15 and the second recessed portion 12, and the depth Ty11 of the first recessed portion 11 is formed to be deeper than the second recessed portion. Ty12 is smaller. In addition, the depth of the concave portion in the form of the present embodiment refers to the dimension in the thickness direction from the most inward direction to the bottom surface of the concave portion of the surface of the surface sheet on which the concave portion is formed.

The second sheet 15 is intended to enhance the introduction property of the body fluid, and is provided to abut against the excretion port for discharging the body fluid. When the depth Ty11 of the first recessed portion 11 in the first region of the second sheet 15 is large, the discharge is performed. The body fluid moves to the wearer's skin, and there is a concern that the feeling of the installation deteriorates due to the adhesion of the skin. However, since the depth Ty11 of the first concave portion is smaller than the depth Ty12 of the second concave portion 12 where the second sheet 15 is not disposed, the first concave portion is formed relatively small, and the surface of the surface layer on the skin contact side of the surface sheet can be suppressed. Distraction concerns.

The body fluid discharged to the first region R1 is suppressed from being conveyed by the liquid on the surface sheet, and is moved in the thickness direction to be held by the second sheet 15. Since the second sheet 15 can maintain the volume without applying press processing, it is possible to maintain a large amount of liquid and improve the dot-like absorbability. In this way, the flow of the liquid on the surface sheet is prevented, and the contact between the skin and the urine can be reduced by suppressing the diffusion on the surface sheet 10.

On the other hand, since the depth Ty12 of the second recessed portion 12 is larger than that of the first recessed portion 11, the solid matter such as feces can be entangled, and the wiping property of the second region R2 can be improved. Since the solid matter such as feces easily gets stuck in the second recess, it is possible to prevent the solid matter that has passed to the surface sheet from flowing. Further, the stuck solid matter is easily absorbed in the second recess 12 having a relatively large depth. Therefore, the feces are trapped by the second concave portion 12, and the flow of the feces is prevented, and the adhesion of the feces to the skin can be suppressed.

Further, since the second concave portion 12 having a relatively large depth is formed adjacent to the periphery of the second sheet 15, the liquid which cannot be completely caught by the second sheet 15 can be prevented from being blocked at the boundary of the second sheet 15, and the surface sheet can be suppressed. 10 The diffusion of body fluids around can reduce the contact surface between body fluids and skin.

By forming the concave portion in the first region R1 and the second region R2 of the surface sheet 10, the surface sheet 10 can be increased in comparison with the smooth surface. Contact area and rapid inhalation of body fluids. Further, a press portion 31 is formed in the absorber 30, and the body fluid absorbed by the absorber is diffused in the absorber through the surface sheet and the second sheet. Therefore, the body fluid can be maintained in a wide range and the absorption performance can be improved.

Further, when the width of the press portion 31 of the absorber is Wx, the thickness of the surface sheet is Ta, and the thickness of the second sheet is Tb, the configuration satisfies Formula 1.

(Formula 1) Wx>(Ta)×2

When the formula 1 is satisfied, the surface sheet 10 is placed along the press portion 31, and a concave portion is formed on the surface of the surface sheet 10 on the skin contact side. On the other hand, when the surface sheet 10 is disposed along the press portion 31, the surface sheet 10 is not disposed in the press portion 31, and the recess portion may not be formed in the entire surface sheet.

In addition, when the thickness of the second sheet 15 is Tb, the configuration satisfies Expression 2.

(Formula 2) Wx>(Ta+Tb)×2

When the surface sheet 10 and the second sheet 15 are disposed along the press portion 31, a concave portion is formed on the surface of the surface sheet 10 on the skin contact side. Therefore, the concave portion can be formed in the entire first region and the second region. On the other hand, when the surface sheet 10 and the second sheet 15 are disposed along the press portion 31, the surface sheet 10 and the second sheet 15 cannot be disposed in the press portion 31, and the entire surface sheet may be disposed. Can not The case where a recess is formed.

Further, the depth of the press portion 31 may be similar to the depth of the first region R1 and the second region, for example, the depth of the press portion where the surface sheet and the first region R1 of the second sheet 15 are disposed. It is also possible to constitute a larger depth than the press portion of the second region.

The depth of the concave portion at the center in the width direction of the concave portion is Ty, and when the width of the concave portion is Wy, the configuration satisfies Expression 3.

(Formula 3) Ty≧Wy/2

Further, in the present embodiment, the depth of the center of the first concave portion in the width direction is Ty11, and the width of the first concave portion is Wy11, and the configuration satisfies Expression 3-1.

(Formula 3-1) Ty11≧(wy11)/2

In the present embodiment, the depth of the center of the second recess in the width direction is Ty12, and the depth of the width of the second recess is Wy12, and the configuration satisfies Expression 3-2.

(Formula 3-2) Ty12≧(Wy12)/2

When the formula 3 is not satisfied, the inclination of the surface sheet constituting the concave portion becomes gentle. Therefore, the area in contact with the body fluid in one recess becomes small, and on the other hand, the area of the surface sheet occupying each recess becomes large. Therefore, it cannot be fully ensured The area in contact with body fluids may not be able to obtain the introduction of body fluids. However, when the above formula 3 is satisfied, the inclination angle of the surface sheet constituting the concave portion is large, and the area of the surface sheet constituting each of the concave portions is small. Therefore, ensuring the area in contact with body fluids ensures the introduction of body fluids.

Further, when Equation 3 is satisfied, as shown in Fig. 4(b), the bottom surface of the press portion is P, the groove start positions at both ends in the wide direction of the press portion are Q and S, respectively, and the angle at which the straight line PQ intersects with the straight line PS is Become ≦90°.

The surface sheet 10 is preferably composed of a laminate of a laminated spunbonded nonwoven fabric layer and a melt-blown nonwoven fabric layer, a dot-bonded nonwoven fabric, and a spunbonded nonwoven fabric. When such a non-woven fabric or laminate is compared with a hot air non-woven fabric of the same basis weight, for example, the bending rigidity is lower than that of the hot air non-woven fabric, and it is easily disposed along the press portion 31 of the absorber 30. Therefore, it is easy to form a concave portion on the surface sheet.

Further, the surface sheet 10 of the embodiment of the present embodiment is an SMS (spunbond-meltblown-spunbond) nonwoven fabric. The SMS non-woven fabric is a laminate in which a melt blown layer is disposed between two layers of the spunbond layer.

The spunbonded nonwoven fabric layer cools the resin ejected from the spinning nozzle and directly captures the fibers to form a non-woven fabric, and is a long fiber having a relatively large fiber diameter. On the other hand, the melt-blown non-woven fabric layer is a resin which is ejected from the spinning nozzle by the hot air, and collects the fibers, and is a long fiber having a fine fiber diameter. By laminating two layers of the spunbonded nonwoven fabric layer and the melt-blown nonwoven fabric layer, the first nonwoven fabric layer is formed, and durability can be improved.

Further, it is preferable that the second sheet 15 is constituted by a hot air non-woven fabric. The hot air non-woven fabric is more bulky than the dot-bonded non-woven fabric, and is introduced into the body fluid, and is easy to maintain. The second sheet is formed by such a hot air non-woven fabric, whereby the introduction and retention of the body fluid can be ensured. The hot air non-woven layer has bulkiness and recoil resistance because of its low density. It is a non-woven layer of hot air, which is more bulky than a melt-blown non-woven layer. Therefore, the introduction of body fluids can be ensured.

Further, in the plan view shown in Fig. 1, the area of the second sheet 15 is desirably 20% to 40% with respect to the area of the absorber 30. For example, when the area of the second sheet is larger than 40% of the area of the absorber, the area in which the second recess is formed becomes small, and the wiping property cannot be ensured, and the leakage of the feces and the contact of the skin with the feces cannot be sufficiently obtained. The effect of the care. On the other hand, when the area of the second sheet 15 is less than 20% of the area of the absorber, the liquid cannot be quickly introduced by the second sheet 15, and the diffusion of the body fluid on the surface sheet 10 is increased, and the skin may be rashed. consider.

The second sheet 15 includes a drain opening abutting region from which the body fluid of the body fluid discharged by the wearer abuts, and the center of the long direction of the second sheet is positioned more than the center of the absorbent article in the longitudinal direction. The ventral side is expected. By arranging the second sheet in the urination area and rapidly introducing the body fluid, liquid conduction on the surface sheet can be prevented. More preferably, the second sheet is set to have a region of 55% or more of the area of the second sheet 15 that is more desirable than the center of the absorbent article in the front-rear direction.

In addition, it is desirable that the outer end portion of the second sheet 15 in the width direction is provided on the outer side in the width direction of the inner end portion of the side sheet 60. The second sheet 15 is disposed on the outer side in the width direction more than the inner end portion of the side sheet 60, so that the leakage preventing wall can be formed along the inter-turn portion and the second sheet can be oriented The wearer's drain is configured.

For example, when the outer end portion of the second sheet 15 in the wide direction is positioned further inward in the width direction than the inner end portion of the side sheet 60, the position of the second sheet 15 is displaced during the attachment, and the opposite direction is discharged. There is a case where the second sheet 15 is not disposed in the mouth. When the second sheet 15 is not disposed in the excretory opening of the wearer, the introduction property of the body fluid may be lowered. However, the outer end portion in the wide direction of the second sheet 15 is disposed on the outer side in the width direction than the inner end portion of the side sheet 60, and the second sheet 15 is disposed on the drain opening of the wearer. Ensure the introduction of body fluids.

Further, in the plan view shown in Fig. 1, the press area ratio which is a ratio of the area of the press portion 31 to the area of the absorber 30 is preferably 10% to 25%. For example, when the press area ratio is 25% or more, not only the touch of the presser portion is impaired by the rigidity of the press portion, but also the area of the smooth surface where the concave portion is not formed is reduced, so that the concave portion is less likely to be formed on the surface sheet 10 along the press portion. On the other hand, when the press area ratio is less than 10%, the area of the concave portion formed in the surface sheet 10 is small, and the diffusibility and the liquid retainability are less likely to be exhibited.

Further, the arrangement pattern of the press portion 31 is not particularly limited. However, it is more preferable that the arrangement pattern of the press portion 31 is continuous with respect to the conveyance direction MD in the manufacturing process of the absorbent article, and a plurality of patterns provided in the intersecting direction CD orthogonal to the conveyance direction are exemplified. Specifically, for example, the arrangement pattern shown in FIG. 5 can be exemplified.

The arrangement pattern of the press portion 311 in Fig. 5(a) has an amplitude in the intersecting direction, and the press portion 311 having the uneven shape along the transport direction MD is The cross direction CD plural arrangement is configured. The concavo-convex shapes extending in the transport direction MD are arranged symmetrically in the intersecting direction. The press area ratio of the press section 31 was 14.6%.

The arrangement pattern of the press sections 312 of Fig. 5(b) is arranged in a lattice shape. The press area ratio of the press section 312 was 15.5%. The arrangement pattern of the press portion 313 in Fig. 5(c) is a linear shape extending in the transport direction MD, and a plurality of intervals are formed in the intersecting direction CD. The press area ratio of the press section 313 was 11.1%.

As shown in FIGS. 5(a) to 5(c), the arrangement pattern of the press portion is continuously disposed in the transport direction MD, whereby the absorbent body is configured to more easily diffuse the body fluid along the press portion toward the transport direction MD. Specifically, the body fluid diffuses in the absorbent body by capillary action. The capillary phenomenon is proportional to the density, and the higher the density, the easier it is to diffuse. The portion where the press portion is formed is denser than the portion where the press portion of the absorber is not formed, and the body fluid is easily diffused. Therefore, by arranging the arrangement pattern of the press section continuously in the transport direction MD, the body fluid of the absorber is easily diffused in the transport direction MD. For example, when the press portion of the point-shaped press portion is discontinuous in the transport direction MD, the diffusion of the body fluid in the transport direction may be interrupted in the middle, and it may not be effective to diffuse in the transport direction. However, by continuously forming the press portion in the transport direction, the body fluid can be diffused in the transport direction without weakening the capillary phenomenon.

Further, since the press portion is recessed from the inner side toward the outer direction, the portion having a high density of the absorbent body (the portion where the press portion is formed) is located more outward than the portion having a lower density (the portion where the press portion is not formed). It becomes a position away from the wearer's skin. Therefore, the body fluid can be made from the muscle The position away from the skin surface spreads toward the transport direction.

Further, for example, when the body fluid does not diffuse in the transport direction MD and the cross direction CD and stays at the dropping position, the body fluid may flow back to the wearer side when the body pressure is applied. However, by diffusing the body fluid in the transport direction, the body fluid is dispersed from the dropping position toward the periphery, and the occurrence of liquid backflow when the body pressure is applied can be suppressed. Further, in the absorbent body having the superabsorbent polymer, when the body fluid stays in the dropping position, there is a concern that the expansion of the superabsorbent polymer blocks the passage of the body fluid and the rubber block is generated. When the rubber block occurs, the body fluid cannot be smoothly passed through, and there is a concern that the absorption capacity of the absorbent body cannot be effectively utilized. However, by diffusing the body fluid, the rubber block at the dropping position can be suppressed, and the absorption capacity of the absorbent body can be effectively utilized.

Further, as shown in Fig. 5 (a), the press portion having the shape of the amplitude in the cross direction CD and the lattice press portion shown in Fig. 1 are transported in the transport direction because of the discontinuity in the transport direction. There are many bumps in the direction. Therefore, the liquid blocking property and the wiping property are improved.

In the method for producing an absorbent article configured as described above, for example, a process of forming an absorbent body by laminating an absorbent material, a process of forming the press portion 31 in the absorbent body, and absorption in forming the press portion 31 can be employed. The absorbent article is manufactured by a method of arranging the second sheet and the surface sheet. In addition, other parts are manufactured in accordance with well-known manufacturing methods.

Further, in the process of disposing the second sheet and the surface sheet on the absorbent body in which the press portion 31 is formed, the second sheet and the surface sheet may be individually bonded to the absorber, or the surface sheet and the second sheet may be adhered. State connection Combined with the absorber. For example, when the surface sheet and the second sheet are individually bonded to the absorber, the surface sheet or the like is bonded to the absorber which is higher in rigidity than the surface sheet and the second sheet. Therefore, it is easy to apply the sheet when the absorber is bonded to the surface sheet or the like. The sheet or the like on the surface of the press section is likely to become close to each other. Therefore, in the state of being joined to the absorber, it is easy to form a depressed portion on the surface sheet or the like.

On the other hand, when the surface sheet having a relatively low rigidity is bonded to the second sheet, when the surface sheet and the second sheet are bonded to each other when the absorber is bonded to the surface sheet or the like, it is difficult to apply the sheet to the surface sheet. 2 There will be worries between the sheets. When the surface sheet and the second sheet are floated together, the sheet surface or the like on the press portion becomes less likely to adhere to each other, and the surface sheet or the like may be formed irregularly.

Further, the bonding between the surface sheet and the second sheet and the bonding between the second sheet and the absorber can be performed by using an adhesive such as a hot-melt adhesive. The coating pattern of the second embodiment is not particularly limited. For example, an Omega pattern can be exemplified as a coating pattern of the surface sheet, and a coating pattern or a shower pattern can be exemplified as a coating pattern of the second sheet.

Since the concave portion is formed on the surface sheet or the like, it is preferable to bond the second sheet having a relatively high volume to the absorber. Since the application of the coating is the application of the contact material, the coating width of the material is large, and the dry side of the coating can be reduced. Therefore, by coating the second sheet with the application pattern, the second sheet can be brought into close contact with each other and bonded to the absorbent body, and a concave portion can be formed on the entire surface sheet or the like. Further, since the entire second sheet can be applied even in a shower pattern, the second sheet can be adhered to and bonded to the absorber. On the other hand, when non-contact coating such as spiral coating, it must be taken More dry edges make the adhesive not stand out from the material. Therefore, it is easy to float at the time of bonding, and it is also weak, and there is a concern that the bonding force to the absorber is not sufficiently obtained.

As described above, the present invention is not limited by the scope of the present invention. From this disclosure, the applicant will be able to understand the various forms, embodiments and techniques of the alternative embodiments.

For example, the second sheet of the absorbent article may be colored by a coloring matter. By applying the coloring process to the second sheet, it is easy to grasp the position of the second sheet at the time of mounting, and it is easy to arrange the second sheet toward the drain port. Further, since the second sheet is subjected to a coloring process, the concealability can be improved. Therefore, the color of the body fluid absorbed by the absorbent body does not become conspicuous, and the installer's discomfort with the color of the excrement can be reduced.

[Examples]

As an example, the depth of the concave portion and the press portion of the surface on the skin contact side of the absorbent article of the absorbent article of the present embodiment is measured. Specifically, the depth of the first concave portion, the depth of the second concave portion, and the depth of the press portion of the absorbent body were measured by the following methods.

(depth measurement method)

High-precision shape measurement system (high-precision load: KS-1100) manufactured by Japan Keens Co., Ltd., and high-speed, high-precision CCD laser displacement meter (including controller: LK-G3000V group, sensor head: LK) -G30) It is a 3-dimensional measurer.

The absorbent article to be measured is placed such that the surface on the side of the sheet on the horizontal surface is below, and is recorded as a contour in a state in which the surface of the section in the cross direction at that time is undulating. The both ends in the wide direction of the portion in which the concave shape is formed are used as the apex of the convex portion, and the bottom surface of the concave shape (the bottom surface of the concave portion and the bottom surface of the press portion) serves as the bottom point of the depressed portion, and the difference between the vertex and the bottom point Calculate the depth.

<Measurement conditions>

. High precision load: KS-1100

Measuring range: 40000μm × 40000μm

Measuring distance: 50μm

Movement speed: 7500μm/sec

(measuring head: LK-G3000V)

Measurement mode: measuring body

Setting mode: diffuse reflection

Filter: 4 times on average

Sample sampling period: 200μs

(measurement result)

The measurement results are shown in Table 1.

When the depth of the first concave portion and the depth of the second concave portion are compared, the first concave portion becomes small. By arranging the second sheet, it is understood that the thickness of the first recess is small.

The invention can be practiced without departing from the spirit and scope of the invention as defined by the appended claims. Therefore, the description of the specification is intended to be illustrative, and is not intended to limit the invention.

1‧‧‧Absorbables

1A‧‧‧Affected skin of the absorbent article

10‧‧‧Surface

11‧‧‧1st recess

12‧‧‧2nd recess

15‧‧‧2nd sheet

20‧‧‧Outer sheets

21‧‧‧ Back non-woven

22‧‧‧Back film

30‧‧‧Acceptor

30A‧‧‧Skin-facing side

31‧‧‧Squeeze Department

35‧‧‧ leg elastic material

41‧‧‧Card components

41A‧‧‧Hooks

41B‧‧‧Fixed piece

60‧‧‧ side flakes

61‧‧‧Leak-proof elastic material

L‧‧‧ direction

W‧‧‧ wide direction

T1‧‧‧Inside direction

T2‧‧‧ outside direction

MD‧‧‧Transport direction

S1‧‧‧ front waist area

S2‧‧‧After Waist Area

S3‧‧‧胯下区

R1‧‧‧1st area

R2‧‧‧2nd area

Fig. 1 is a plan view of an absorbent article according to an embodiment.

Fig. 2 is a cross-sectional view showing the X1-X1' cross section of Fig. 1.

Fig. 3 is a cross-sectional view showing a cross section taken along line X2-X2' of Fig. 1;

Fig. 4 is an enlarged cross-sectional view of the absorbent article. (a) is an enlarged cross-sectional view of a portion A shown in Fig. 2, and (b) is an enlarged cross-sectional view of a portion B shown in Fig. 3.

Fig. 5 is a view showing an arrangement pattern of a press portion of an absorbent body.

T‧‧‧ thickness direction

30A‧‧‧After the skin of the absorbent body

Ta‧‧ thickness

Tb‧‧‧ thickness

11‧‧‧1st recess

Wide width of the first recess of Wy11‧‧

Depth of the center of the width direction of the first recess of Ty11‧‧

10‧‧‧ liquid permeable surface sheet

15‧‧‧2nd sheet

30‧‧‧Acceptor

31‧‧‧Squeeze Department

12‧‧‧2nd recess

Wide depth of the second recess of Wy12‧‧

Depth of the center of the width direction of the second recess of Ty12‧‧

S‧‧‧Starting position of the groove at both ends of the press section in the wide direction

Q‧‧‧Starting position of the groove at both ends of the press section in the wide direction

Claims (10)

An absorbent article comprising: a liquid-permeable surface sheet; a liquid-impermeable outer sheet; an absorber provided between the surface sheet and the exterior sheet; and the surface sheet and the absorber a second sheet that covers a part of the absorbent body and has a first region in which the surface on the skin contact side of the absorbent body abuts on the second sheet, and a skin contact side of the absorbent body In the second region in which the surface is in contact with the surface sheet, the press portion in which the absorbent body is compressed in the thickness direction from the skin contact side of the absorbent body to the non-skin contact side is formed in the absorbent body. The surface sheet and the second sheet are disposed along a surface on the skin contact side of the absorbent body, and a concave portion along the press portion of the absorbent body is formed on a surface of the absorbent article on the skin contact side. The depth of the concave portion in the first region is smaller than the depth of the concave portion in the second region. The absorbent article according to claim 1, wherein the width of the press portion of the absorbent body is Wx, and when the thickness of the surface sheet is Ta, the composition satisfies Formula 1, (Formula 1) Wx> (Ta) ) × 2. The absorbent article according to claim 2, wherein when the thickness of the second sheet is Tb, the composition satisfies Formula 2, and (Formula 2) Wx>(Ta+Tb)×2. The absorbent article according to any one of the first to third aspects of the present invention, wherein When the depth of the concave portion is Ty and the width of the concave portion is Wy, the configuration satisfies Expression 3 and (Expression 3) Ty ≧ Wy/2. The absorbent article according to any one of claims 1 to 3, wherein the press portion is continuously formed in a straight line, and a press area ratio of an area of the press portion with respect to an area of the absorber is 10 %~25%. The absorbent article according to any one of claims 1 to 3, wherein the surface sheet is a laminate of a spunbonded nonwoven fabric layer and a melt-blown nonwoven fabric layer, a dot-bonded nonwoven fabric, and a spunbond. At least one of the non-woven fabrics is constituted. The absorbent article according to any one of claims 1 to 3, wherein the second sheet is formed by a hot air non-woven fabric. The absorbent article according to any one of the first to third aspects of the present invention, wherein the second sheet is a drain port abutting region including a body fluid that abuts a body fluid discharged from a wearer, and is configured as described above The center of the long direction of the sheet 2 is located on the ventral side of the wearer more than the center of the longitudinal direction of the absorbent article. The absorbent article according to any one of claims 1 to 3, wherein a pair of the both sides of the absorbent body covering the both sides of the absorbent body is provided on the wearer side of the surface sheet. a side sheet which is disposed at the inner side end portion of the side sheet and which expands and contracts in the longitudinal direction, and an outer end portion of the second sheet in the width direction is larger than the side The inner end portion of the partial sheet is further provided on the outer side in the width direction. The absorbent article according to any one of claims 1 to 3, wherein the second sheet is colored by a coloring matter.