JP6028054B2 - Absorbent articles - Google Patents

Description

  The present invention relates to absorbent articles such as sanitary napkins, panty liners, incontinence pads, disposable paper diapers for absorbing bodily fluids such as menstrual blood, vaginal discharge, and urine, and more specifically, an uneven pattern is formed on a liquid-permeable surface sheet. It is related with the provided absorbent article.

  Conventionally, as the surface material of absorbent articles, it has been given an appropriate embossed pattern according to various purposes such as reducing the contact area to the skin to reduce the moist feeling, or giving the texture and enhancing the touch. Is offered to the market. Further, as the surface material, those having appropriate openings formed for various purposes such as increasing the absorption rate of body fluids and eliminating the stickiness by eliminating liquid residue on the surface have been developed. As this kind of thing, the following patent documents 1 and 2 etc. can be mentioned, for example.

  In the following Patent Document 1, an absorption including a liquid-retaining absorbent having a through-hole penetrating between a skin-side surface and a clothing-side surface, and the top sheet covers the inside of the through-hole of the absorbent body A sex product is disclosed.

  Moreover, in the following patent document 2, the top sheet has a non-woven fabric layer constituting at least a skin contact surface layer, and a multilayer sheet having a plastic film layer laminated on the non-skin contact surface side with respect to the nonwoven fabric layer; And the plastic film layer is made of a material having a lower melting point than the nonwoven fabric layer, and is heated outwardly on the topsheet under a heating condition that is not less than the melting point of the plastic film layer and less than the melting point of the nonwoven fabric layer. An absorptive article is disclosed which has been subjected to an embossing process of a concavo-convex shape made up of a number of protruding parts protruding into the surface, and of which a convex embossed part or a concave embossed part is subjected to a hole opening treatment. ing.

In addition, in the previous application (Patent Document 3 below), the inventor intermittently applied a large number of first embosses and second embosses to the liquid-permeable surface sheet, and the first embosses and second embosses. Are formed in a lattice shape along the longitudinal direction and the width direction of the absorbent article, and the first defined regions adjacent to each other are surrounded by the four corners. A second defined area is provided to include the second embossment disposed in each first defined area;
A first convex portion that bulges to the skin side with the first embossing and the second embossing as base ends is formed in the first defining region, and at least the second embossing is formed in the second defining region. And a second convex part that bulges to the skin side at a relatively lower height than the first convex part is formed,
In the first defining region, the first emboss is arranged so that the center is positioned on the imaginary line to be closed, and the second emboss is in the middle of the adjacent first embosses along the imaginary line. And the absorbent article arrange | positioned so that a center may be located inside the said virtual line was proposed. In such an absorbent article, the second convex portion surrounded on the four sides by the first convex portion and its periphery act as a temporary body fluid storage space, and the first convex portion of the portion provided with the second embossing By making this slope into a steep slope, the body fluid can easily flow into the body fluid storage space along the slope, and it is difficult for the body fluid to remain on the skin surface, so that the sensation can be improved.

JP 2013-78375 A JP 2008-73396 A Japanese Patent Application No. 2014-197981

  However, in the absorbent article described in Patent Document 1, since the surface of the top sheet in the region where the through-hole is formed in the absorbent body is flat, there is no cushioning property, and the contact area with the skin is increased, resulting in rubbing. There are problems such as skin troubles such as fogging and itching, and stickiness when absorbing body fluids.

  Moreover, in the absorbent article described in Patent Document 2, since the convex embossed portion or the concave embossed portion is subjected to a hole opening treatment among the uneven embossed portions of the surface sheet, body fluid passes through the surface sheet through the holes. The structure is easy to do. However, since a certain amount of time is required for the body fluid that has passed through the topsheet to be absorbed by the absorber, there is a problem that the body fluid tends to accumulate between the topsheet and the absorber. In particular, in the case of menstrual blood with sticky dripping, it is easy to pass through the top sheet through the opening, but it is difficult to migrate to the absorbent body after that, and it tends to accumulate between the top sheet and the absorbent layer. It occurred frequently.

  Further, in the absorbent article described in Patent Document 3, in the case of menstrual blood having a sticky drop in the second convex portion that acts as a body fluid storage space, it is difficult to permeate the liquid-permeable surface sheet. It may be possible to remain in

  Accordingly, a main problem of the present invention is to provide an absorbent article that eliminates skin troubles, prevents a sticky feeling during absorption of body fluids, and allows the body fluids to be quickly transferred to the absorbent body.

In order to solve the above problems, as the present invention according to claim 1, in an absorbent article in which an absorber is interposed between a liquid-permeable top sheet and a back sheet,
A plurality of first embossments and second embosses are intermittently applied to the liquid-permeable surface sheet, and a first defined area in which the first embosses and second embosses are arranged in a predetermined pattern is an absorbent article. The second embossment provided in each of the first defined regions is provided in a lattice shape along the longitudinal direction and the width direction of the first and second corners surrounded by the adjacent first defined regions. A second defining area is provided to include,
A plurality of first protrusions bulging toward the skin with the first embossing and the second embossing as base ends are formed in the first defining region, and at least the second embossing region is formed in the second defining region. A number of second protrusions bulging to the skin side at a relatively lower height than the first protrusion with the embossed base are formed,
In the first defining region, the first emboss is arranged so that the center is located on an elliptical or circular imaginary line that is closed, and the second emboss is adjacent to the first imaginary line along the imaginary line. Between the embosses, the center is located on the inner side of the imaginary line, and the inner edge of the second emboss is inserted into the first convex part,
The second convex portion of the liquid-permeable topsheet, an absorbent article, characterized in that apertures penetrating the translucent liquid-permeable surface sheet are found provided is provided.

In the first aspect of the present invention, the first bulge and the first bulge which bulges to the skin side with these embosses as the base ends by intermittently applying a large number of first embosses and second embosses to the liquid-permeable surface sheet. An uneven liquid-permeable surface sheet having a large number of two convex portions is provided. Since the second convex part which bulges relatively low on the skin side is formed in the region surrounded by the four corners by the first convex part which bulges relatively high on the skin side, the second convex part and The surrounding area becomes a temporary body fluid storage space surrounded on all four sides by the first convex portion. This body fluid storage space becomes a larger space than the case where the first convex portion and the second convex portion are configured at the same height, and a large amount of body fluid can be temporarily stored. The sensation can be improved and the body fluid can be quickly transferred from the second convex portion and its periphery to the absorber.

Further, the liquid-permeable surface sheet has a large number of first convex portions that bulge toward the skin side, and a large number of second convex portions that bulge to the skin side at a relatively lower height than the first convex portion. Convex / concave pattern is provided, which reduces the contact area between the liquid-permeable surface sheet and the skin, reduces skin troubles such as rubbing, fogging and itching, and prevents stickiness when absorbing body fluids It becomes like this.

  Moreover, since the opening which penetrates this liquid-permeable surface sheet is provided in the said 2nd convex part of the said liquid-permeable surface sheet, the bodily fluid made into the sticky stick as well as the low-viscosity body fluid Even in this case, the liquid-permeable surface sheet can be easily passed through the opening, there is no liquid residue on the surface, and the sticky feeling at the time of body fluid absorption can be eliminated.

  Here, since the opening is formed on the second convex portion having a relatively lower height, avoiding the first convex portion, the shape of the first convex portion bulging to the skin side is formed. It is maintained, and skin troubles are not caused by providing the opening.

As the present invention according to claim 2, there is provided the absorbent article according to claim 1, wherein a recess is formed on the surface of the absorbent body corresponding to the opening on the liquid-permeable surface sheet side.

In the invention described in claim 2, the body fluid having passed through the pre-Symbol open pores by entering into the recess of the absorbent body, it will be quickly absorbed into the absorbent body.

As the present invention according to claim 3 , there is provided the absorbent article according to any one of claims 1 and 2 , wherein the opening is formed at a top portion of the second convex portion.

In the invention of claim 3 , by forming the opening at the top of the second convex portion, body fluid that has passed through the opening is prevented from returning to the skin side again through the opening, The sticky feeling can be further eliminated.

As a fourth aspect of the present invention, the peripheral edge portion of the opening is provided so as to be separated to the skin side without being connected to a member disposed on the non-skin side from the liquid-permeable surface sheet. Item 4. The absorbent article according to any one of Items 1 to 3 .

In the invention of claim 4 , the peripheral edge of the opening is separated to the skin side without being connected to a member disposed on the non-skin side from the liquid-permeable surface sheet such as an absorber. The body fluid that has passed through the liquid-permeable surface sheet through the opening can be prevented from returning to the skin side through the opening again.

As the present invention according to claim 5, there is provided the absorbent article according to claim 2 , wherein a peripheral edge portion of the opening covers the hollow portion of the absorber.

In the invention according to claim 5 , since the peripheral edge portion of the opening covers the hollow portion of the absorber, the body fluid that has passed through the hole enters the hollow portion of the absorber as it is, and the hollow portion Through the absorber.

As the present invention according to claim 6, the area of the apertures, the absorbent article according to any one of claims 1 to 5 is 0.01mm ² ~8mm ² is provided.

In the invention described in claim 6 , if the area of the opening is too small, viscous menstrual blood cannot pass, and if the area of the opening is too large, the bodily fluid returns through the opening. Since there is a fear, it is defined within a predetermined range.

As this invention which concerns on Claim 7 , the said opening is provided in the area | region corresponding to a bodily fluid discharge part at least, The absorbent article in any one of Claims 1-6 is provided.

In the invention according to claim 7 , by providing the opening at least in a region corresponding to the body fluid discharge portion, the body fluid in this region is absorbed well, and a sticky feeling at the time of body fluid absorption can be prevented. No longer occurs.

  As described above in detail, according to the present invention, skin troubles are eliminated, a sticky feeling at the time of body fluid absorption can be prevented, and body fluid can be quickly transferred to the absorber.

It is a partial fracture development view of sanitary napkin 1 concerning the present invention. 3 is an enlarged plan view of a liquid permeable top sheet 3. FIG. It is the III-III arrow directional view of FIG. It is the IV-IV line arrow directional view of FIG. 2 which shows the state at the time of body fluid discharge | emission. It is sectional drawing of the conventional absorbent article which shows the state at the time of body fluid discharge | emission. FIG. 3 is an enlarged plan view of a first definition region 12. It is a VII-VII arrow line view of FIG. It is a VIII-VIII arrow directional view of FIG. It is the IV-IV line arrow directional view of FIG. 2 which concerns on another form example. It is an expanded view of the sanitary napkin 1 which concerns on another form example. It is sectional drawing which shows the uneven | corrugated pattern processing apparatus. It is sectional drawing which shows the processing apparatus 34. FIG.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

[Basic structure of sanitary napkin 1]
The sanitary napkin 1 according to the present invention, as shown in FIGS. 1 to 4, is a liquid-impermeable back sheet 2 made of a polyethylene sheet, a polypropylene sheet, etc. A liquid surface sheet 3, an absorbent body 4 made of cotton-like pulp or synthetic pulp interposed between the two sheets 2 and 3, and the liquid-permeable surface sheet 3 and the absorbent body 4 were provided. A hydrophilic second sheet 5 is provided.

Hereinafter, the structure of the sanitary napkin 1 will be described in detail.
As the liquid-impermeable back sheet 2, a sheet material having at least water shielding properties such as an olefin resin sheet such as polyethylene or polypropylene is used. In addition, a laminated nonwoven fabric obtained by laminating a nonwoven fabric on a polyethylene sheet or the like, or A nonwoven fabric sheet (in this case, the waterproof film and the nonwoven fabric constitute a liquid-impervious back sheet) can be used after substantially impervious to liquid imperviousness by interposing a waterproof film. In recent years, those having moisture permeability tend to be used from the viewpoint of preventing stuffiness. This water- and moisture-permeable sheet material is a microporous sheet obtained by forming a sheet by melting and kneading an inorganic filler in an olefin resin such as polyethylene or polypropylene, and then stretching in a uniaxial or biaxial direction. It is.

  Next, as the liquid-permeable surface sheet 3, a porous or non-porous nonwoven fabric or a porous plastic sheet is preferably used. Examples of the material fibers constituting the nonwoven fabric include synthetic fibers such as polyethylene or polypropylene, synthetic fibers such as polyester and polyamide, recycled fibers such as rayon and cupra, and natural fibers such as cotton. A nonwoven fabric obtained by an appropriate processing method such as a lace method, a spun bond method, a thermal bond method, a melt blown method, or a needle punch method can be used. Among these processing methods, the spunlace method is excellent in terms of flexibility and the spunbond method is excellent in drapeability, and the thermal bond method and the air-through method are excellent in terms of being bulky and having high compression recovery properties.

  The absorbent body 4 interposed between the liquid-impermeable back sheet 2 and the liquid-permeable surface sheet 3 is made of, for example, cotton-like pulp and a highly water-absorbing polymer. As the superabsorbent polymer, superabsorbent polymer granular powder (SAP) or superabsorbent polymer fiber (SAF) can be used. Examples of the pulp include chemical fibers obtained from wood, cellulose fibers such as dissolved pulp, and artificial cellulose fibers such as rayon and acetate. Softwood pulp having a longer fiber length than hardwood pulp functions and It is preferably used in terms of price. Although the manufacturing method of the absorber 4 is preferably made of piled pulp so as to be rich in flexibility, it may be an airlaid absorber capable of reducing the bulk. The absorbent body 4 may be surrounded by an encapsulating sheet (not shown) made of crepe paper, non-woven fabric, or the like for shape retention and diffusibility improvement.

  The absorbent body 4 may be mixed with synthetic fibers. As the synthetic fiber, for example, polyolefins such as polyethylene or polypropylene, polyesters such as polyethylene terephthalate and polybutylene terephthalate, polyamides such as nylon, and copolymers thereof can be used. It may be a mixture. In addition, a composite fiber such as a core-sheath fiber, a side-by-side fiber, or a split fiber having a fiber having a high melting point as a core and a fiber having a low melting point as a sheath can also be used.

  The hydrophilic second sheet 5 disposed between the liquid-permeable surface sheet 3 and the absorbent body 4 may be anything as long as it has hydrophilicity with respect to the body fluid. Specifically, by using recycled fibers such as rayon and cupra, natural fibers such as cotton, the material itself has hydrophilicity, or synthesis of olefins such as polyethylene or polypropylene, polyesters, polyamides, etc. The fiber which surface-treated with the hydrophilizing agent and provided the hydrophilic property can be used. As will be described later, the second sheet 5 is bonded to the back side (non-skin side) of the liquid-permeable surface sheet 3 by heat-sealing (embossing), and the liquid-permeable surface sheet is left in a laminated state. 3 and the embossing 10 and 11 are processed.

  The second sheet 5 and the absorbent body 4 are desirably joined by a hot melt adhesive or the like. By joining the second sheet 5 and the absorbent body 4, menstrual blood or the like can quickly penetrate into the absorbent body 4 from the second sheet 5 and be absorbed.

[Unevenness pattern of liquid-permeable surface sheet 3]
In the sanitary napkin 1, as shown in FIGS. 2 and 4, the liquid-permeable surface sheet 3 has a large number of first protrusions 14, 14... A large number of second convex portions 15, 15... Bulging toward the skin side at a relatively lower height are formed. The first convex portion 14 and the second convex portion 15 will be specifically described below.

  In forming the first convex portion 14 and the second convex portion 15, as shown in FIG. 2, the skin of the liquid-permeable surface sheet 3 is formed on the liquid-permeable surface sheet 3 and the second sheet 5. A number of first embosses 10 and second embosses 11 are intermittently applied by embossing from the surface side (surface side). The intermittent application of the first emboss 10 and the second emboss 11 means that the embossed portions by the embosses 10 and 11 and the spaced portions to which no embossing is applied are alternately formed, and the napkin width direction or longitudinal direction This means that no continuous emboss line is applied.

  The liquid-permeable surface sheet 3 and the second sheet 5 are joined by the first emboss 10 and the second emboss 11. As the first embossing 10 and the second embossing 11, known embossing means such as thermal embossing and ultrasonic embossing can be adopted.

  As shown in FIG. 2, the liquid-permeable surface sheet 3 includes a first defining region 12 in which the first emboss 10 and the second emboss 11 are arranged in a predetermined pattern, and the longitudinal direction and width of the sanitary napkin 1. At least the second emboss 11 provided in the first defining region 12 is provided in a lattice shape along the direction, and at the four corners surrounded by the adjacent first defining regions 12, 12. It is preferable that the second defining region 16 is provided so as to include In the example shown in FIG. 2, the second defined area 16 is an embossed pattern in which the second embossed elements 11 arranged in the surrounding first defined area 12 are arranged one by one at the four corners. The second defined area 16 includes at least the second emboss 11 disposed in the first defined area 12. Therefore, the second defined area 16 is provided so as to partially overlap the first defined area 12.

  As shown in FIG. 2, the first defining region 12 may be partitioned so that a part of the first embossing regions 12, 12 are adjacent to each other (first embossing 10). However, the first defining regions 12 and 12 may be arranged so as to be separated from each other (so as not to have the first emboss 10 common to the adjacent first defining regions 12 and 12).

  The first defined region 12 is formed with a relatively larger area than the second defined region 16. Further, the number of the embosses 10 and 11 provided in the first definition region 12 is relatively larger than the number of the embosses provided in the second definition region 16.

  The first defining region 12 is formed with a first convex portion 14 bulging toward the skin with the first emboss 10 and the second emboss 11 as the base ends. The second defining region 16 is formed with a second convex portion 15 that bulges toward the skin at a relatively lower height than the first convex portion 14 with at least the second emboss 11 as a base end. Has been.

  As shown in FIG. 3 and FIG. 4, the first convex portion 14 and the second convex portion 15 are formed by causing the liquid-permeable surface sheet 3 to bulge from the second sheet 5 to the skin side, A dome-shaped space is provided between the liquid-permeable surface sheet 3 and the second sheet 5. The volume of the space is formed so that the first protrusion 14 is relatively larger than the second protrusion 15, and the height of the space is the second protrusion 15 of the first protrusion 14. It is formed relatively larger.

  As shown in FIG. 4, the height H2 bulging to the skin side of the second convex portion 15 (from the non-skin surface of the second sheet 5 at the top of the second convex portion 15 to the skin surface of the liquid-permeable surface sheet 3) Is the height H1 bulging to the skin side of the first convex portion 14 (from the non-skin surface of the second sheet 5 at the top of the first convex portion 14 to the skin surface of the liquid-permeable surface sheet 3). It is set relatively lower than (height) (H1> H2). The height H1 of the first convex portion 14 is preferably 2.1 mm to 4.0 mm, and the height H2 of the second convex portion 15 is preferably 1.0 mm to 2.0 mm. The difference (H1−H2) between the height H1 of the first protrusion 14 and the height H2 of the second protrusion 15 is preferably 0.5 mm to 3.0 mm.

  By providing the 1st convex part 14 and the 2nd convex part 15, since the contact area of the liquid-permeable surface sheet 3 and a skin surface reduces, a feeling of touch becomes favorable. That is, the contact point between the liquid-permeable surface sheet 3 and the skin surface becomes the top of the first convex portion 14 that bulges relatively high toward the skin side, and contacts the skin surface in a plurality of points. Is reduced and the skin contact is improved. Moreover, since the contact with the skin surface becomes a plurality of points, and there is a space between the skin surface and other than the contact portion, the fluidity of the body fluid is improved through this space, and the body fluid is easily transferred to the absorber.

  Further, when the second convex portion 15 bulges to the skin side at a relatively lower height than the first convex portion 14, the following effects are exhibited. As shown in FIGS. 2 and 4, a temporary body fluid storage space S surrounded by the first protrusions 14, 14... Will be formed. Even when a large amount of bodily fluid that cannot be held in the space between the first convex portion 14 and the second convex portion 15 is discharged, the body fluid storage space S has a stored water level from the height H2 of the second convex portion 15. The body fluid can be held by expanding to the height H1 of the first convex portion 14 that has been raised. Here, even when the stored water level rises from the height H <b> 2 of the second convex portion 15, the liquid-permeable surface sheet 3 is in contact with the skin surface at the top of the first convex portion 14, and therefore accumulates in the body fluid storage space S. The body fluids are less likely to adhere to the skin surface, so that you can maintain a dry feeling. Moreover, the bodily fluid temporarily stored in the bodily fluid storage space S is the opening 20 provided in the surface of the embosses 10 and 11, the 1st convex part 14, the 2nd convex part 15, and the 2nd convex part 15 explained in full detail behind. To the absorber 4 quickly.

  On the other hand, if there is no distinction between the first convex portion 14 and the second convex portion 15 and the convex portions having the same height are formed as shown in FIG. Only a gap could be used as a body fluid storage space, and when a large amount of body fluid was discharged, the body fluid stored water level increased and the body fluid contacted the skin surface, causing stickiness.

Next, the emboss pattern provided in the first defining region 12 and the cross-sectional shape of the first convex portion 14 will be described in detail with reference to FIGS. First, the embossing pattern will be described. As shown in FIG. 6, in the first defining region 12, the first embossing 10 is arranged such that the center C _{10 of} the first embossing 10 is positioned on the imaginary line 13 to be closed. Has been placed. In other words, the first embossing 10 is, when subtracting the imaginary line 13 passing through the plurality of first embossing 10, 10 ... center _{C 10} of the present in the first defined area 12, the virtual line 13 is oval, It is formed by a closed shape line such as a circle or a polygon.

The virtual line 13 is preferably formed in an elliptical shape that is long in the longitudinal direction of the sanitary napkin 1. In other words, the first embosses 10, 10... In the first defining region 12 are preferably arranged intermittently so that the centers C ₁₀ , C ₁₀ . In this way, when the first embosses 10, 10... Are arranged along the elliptical imaginary line 13, the first convex portion 14 with the first embosses 10, 10. The gradient of the outer contour of the first convex portion 14 in the elliptical short direction (napkin width direction) is the outer contour of the first convex portion 14 in the elliptical longitudinal direction (napkin longitudinal direction). Since the slope is relatively steeper than the slope of the line, the bodily fluid existing at the top of the first convex portion 14 is likely to flow in an elliptical short direction (napkin width direction) having a steep slope. The body fluid easily flows into the body fluid storage space S formed in the hand direction.

The planar dimensions of the imaginary line 13, as shown in FIG. 6, the longitudinal dimension _{L 13} is 4.0Mm～10.0Mm, it is preferable widthwise dimension _{W 13} is a 3.5Mm～7.5Mm.

The first emboss 10 is intermittently disposed along the virtual line 13. The number of the first embosses 10 arranged along the imaginary line 13 may be at least 3, preferably 4 to 8, and more preferably 4 shown in FIG. When the four first embosses 10, 10... Are arranged on the elliptical virtual line 13, each of the elliptical quadrant, that is, each of the virtual line 13 and the elliptical longitudinal centerline CL and the widthwise centerline CW. preferably, the center C ₁₀ is arranged so as to be positioned at the intersection. As a result, the region surrounded by the first embosses 10, 10... Bulges more clearly to the skin side, and the first convex portion 14 can be formed exactly.

  The first emboss 10 is preferably formed with a relatively larger area than the second emboss 11. Specifically, the area of the first emboss 10 is 2 to 4 times, preferably about 3 times the area of the second emboss 11. Thereby, while the 1st embossing 10, 10 ... will be formed more clearly, the 1st convex part 14 which bulges to the skin side will be mentioned later provided by providing the said 2nd embossing 11, 11 .... Thus, the flow-promoting slope 17 becomes clearer, and body fluid easily flows along the flow-promoting slope 17. The area of the first emboss 10 and the second emboss 11 is the area of the bottom surface of each emboss 10, 11. The first emboss 10 and the second emboss 11 may be formed with the same area, or the second emboss 11 may be formed with a larger area than the first emboss 10.

  As shown in FIG. 6, the planar shape of the first emboss 10 is preferably an oval shape whose both side edges are straight lines and whose both end edges are semicircular arcs. The oval first emboss 10 is preferably oriented in the longitudinal direction in the tangential direction of the virtual line 13. As a result, the region surrounded by the first embosses 10, 10... Bulges more clearly to the skin side, and the first convex portion 14 can be formed exactly. Further, the planar shape of the first emboss 10 may be formed in various forms such as a circle, an ellipse, a quadrangle, and a polygon in addition to an oval.

When the planar dimension of the first emboss 10 (dimension of the embossed bottom surface) is a planar shape that is long in the tangential direction of the virtual line 13 as shown in FIG. 6, the longitudinal dimension L ₁₀ is 1.0 mm to 5.0 mm. preferably, the shorter dimension _{W 10} and 0.5 mm to 3.0 mm.

On the other hand, as shown in FIG. 6, the second emboss 11 is an intermediate point between the adjacent first embosses 10 and 10 along the virtual line 13, and the center C ₁₁ of the second emboss ₁₁ is the virtual line. It is arranged so as to be located inside 13. That is, the center C ₁₁ of the second emboss 11 is arranged so as to have an eccentric amount U in the radial direction inside the virtual line 13.

The eccentric amount of time of the center C ₁₁ is positioned from the virtual line 13 on the inner side of the second embossing 11 U (radial distance between the imaginary line 13 between the center C ₁₁ and the virtual line 13 of the second embossing 11) The imaginary line 13 may be in a range that passes through the emboss of the second emboss 11. That is, when the second emboss 11 is circular, the eccentric amount U is preferably within the radius of the second emboss 11. If it is decentered inward from this, the bulging height of the first convex portion 14 is lowered by the second emboss 11, and the flow of body fluid due to the inclination of the first convex portion 14 may be hindered.

  As shown in FIG. 6, the second emboss 11 preferably has a circular planar shape. By making the 2nd emboss 11 circular, the circular arc part which bulges to the center side of the virtual line 13 opposes the curved surface which bulges outside the 1st convex part 14, and the below-mentioned flow by the 2nd emboss 11 The promotion slope 17 can be formed exactly. The planar shape of the second emboss 11 can be formed in various forms such as an oval, an ellipse, a quadrangle, and a polygon in addition to a circle. When the second emboss 11 is formed in a planar shape having a longitudinal direction and a short direction, it is preferably arranged so that the longitudinal direction is parallel to the tangential direction of the adjacent virtual line 13.

The plane dimension (dimension of the bottom face of the emboss) of the second emboss 11 is 0.5 mm to 3.0 mm when circular (longitudinal dimension L ₁₁ = short dimension W ₁₁ ) as shown in FIG. Is preferred. Further, when formed in a planar shape having a longitudinal direction and a lateral direction, the longitudinal dimension _{L 11} 0.5 mm to 4.0 mm, a short side dimension _{W 11} is given to the 0.5mm~3.0mm preferred.

The width (diameter in the case of a circle) of the second emboss 11 is preferably formed to be substantially the same as the width (short dimension in the case of an oval) of the first emboss 10. Thereby, while the 1st convex part 14 and the below-mentioned flow-down acceleration slope 17 are formed reliably, the influence of the hardness by embossing can be relieve | moderated. That is, by forming the first emboss 10 and the second emboss 11 with substantially the same width, the center C ₁₁ of the second emboss 11 is positioned inward from the virtual line 13 passing through the center C ₁₀ of the first emboss 10. Since the inner edge of the second emboss 11 bites into the first convex portion 14 that bulges to the skin side with the inner edge of the first emboss 10 as the base end, a flow-promoting slope 17 described later is provided. Can be reliably formed.

  One or a plurality of the second embosses 11 may be arranged between the first embosses 10 and 10 adjacent to each other along the virtual line 13. In the example shown in FIG. 6, one second emboss 11 is arranged at the center between the adjacent first embosses 10 and 10. That is, with respect to the elliptical imaginary line 13, the first emboss 10 is disposed at each apex in the longitudinal direction and the short direction, and the second emboss 11 is disposed at an intermediate portion thereof. For this reason, as shown in FIG. 2, in the state where the first defined regions 12 are arranged in a grid pattern vertically and horizontally, the first defined regions 12, 12... , Four second embosses 11, 11... Are located. In addition, when arrange | positioning two or more 2nd embossing 11 ... between the 1st embossing 10 and 10, it is good to arrange | position at substantially equal intervals.

  Next, the cross-sectional shape of the first convex portion 14 formed in the first definition region 12 will be described. The cross-sectional shape of the first protrusion 14 is based on the first embosses 10 and 10 as shown in FIG. 7 in a cross-section passing through the center of the adjacent first embosses 10 and 10 (cross-section in the napkin width direction). It is formed in a dome-like outer shape that bulges outward with the imaginary line 13 as the bottom.

On the other hand, in a cross section (diagonal cross section) passing through the second embosses 11, 11 existing in the diagonal portion, the center C ₁₁ of the second emboss 11 is positioned inside the virtual line 13 as shown in FIG. Therefore, the second emboss 11 is applied to the inner side of the dome-shaped outer shape formed by the first emboss 10. For this reason, in this cross-sectional view, in the vicinity region of the second emboss 11, the external shape of the first convex portion 14 is swelled inward, and the cross-sectional view passing through the first embosses 10 and 10 The flow-promoting slope 17 is formed with a relatively steep slope from the outer shape line. As shown in FIG. 6, the flow-promoting slope 17 is formed so as to extend from the second emboss 11 to the center of the first convex portion 14 over a predetermined range.

  In this way, by providing the flow-promoting slope 17 on the first convex portion 14, when there is a body fluid on the top of the first convex portion 14, the body fluid is steeply inclined by applying the second emboss 11. It becomes easy to flow toward the flow-promoting slope 17 and becomes easy to flow into the body fluid storage space S to which the second emboss 11 is applied. Therefore, liquid does not remain on the surface of the liquid-permeable surface sheet 3, and body fluid does not easily adhere to the skin surface, so that the smoothness of the surface can be improved.

  Moreover, since the 1st emboss 10 and the 2nd emboss 11 are each provided intermittently, there is little influence of the hardness by emboss and it becomes possible to maintain the good texture.

  On the other hand, in the second defined area 16, as shown in FIG. 2, the second embossed areas 11, each of which has at least the second embossed areas 11 of the first defined areas 12 arranged in the surrounding four sides, The 2nd convex part 15 is formed when the liquid-permeable surface sheet 3 of the area | region enclosed by 11 ... bulges to the skin side.

  In the example shown in FIG. 2, the second defined area 16 is provided so as to include one second emboss 11 arranged in each of the first defined areas 12 arranged in the surrounding four directions. Thus, a total of four second embosses 11, 11... Are arranged. The second definition area 16 may include two or more second embosses 11 disposed in each first definition area 12 or may include the first emboss 10.

In the second defining region 16, the four second embosses 11, 11,... Are arranged so that the center is located on the second imaginary line 18 to be closed. The second imaginary line 18 is preferably oval long in the napkin longitudinal direction, but may be circular, polygonal, or oval long in the napkin width direction. As shown in FIG. 2, the planar dimension of the second imaginary line 18 is preferably such that the longitudinal dimension L ₁₈ is 2.0 mm to 4.0 mm and the short dimension W ₁₈ is 2.0 mm to 3.5 mm. .

  As shown in FIG. 4, the cross-sectional shape of the second convex portion 15 is formed in a dome shape whose outer shape bulges outward in any cross-sectional view.

  As described above, since the second convex portion 15 formed in the second defining region 16 is provided in the body fluid storage space S, the second emboss 11 serving as the base end of the second convex portion 15 is The body fluid storage space S is formed. For this reason, the bodily fluid accumulated in the bodily fluid storage space S is easily absorbed by the absorber 4 through the second emboss 11.

  In the first defined region 12, the ratio of the first emboss 10 and the second emboss 11 overlapping the virtual line 13 is preferably 30% to 80% with respect to the length of the virtual line 13, and 65%. -75% is more preferred. Further, when a circular or elliptical second imaginary line 18 passing through the center of the second embossing 11, 11... Is drawn in the second defining region 16, the second embossing 11 is placed on the second imaginary line 18. Is preferably 30% to 80%, and more preferably 35% to 45% with respect to the length of the second virtual line 18. By adding embossing, the liquid-permeable topsheet 3 and the second sheet 5 are joined, and the fibers at the joined portion become dense and the body fluid is easily absorbed. However, the embossing ratio on the imaginary lines 13 and 18 is 30. When the ratio is less than%, the effect of absorbing body fluid is less likely to be produced. On the other hand, when the ratio is greater than 80%, it becomes easy to feel the hardness due to embossing.

[About the opening 20 and the recess 21]
In the sanitary napkin 1, as shown in FIG. 2, the liquid-permeable surface sheet 3 is penetrated in the thickness direction in the second convex portion 15 of the liquid-permeable surface sheet 3 provided with the above-described uneven pattern. An opening 20 is provided.

  As a result, not only the menstrual blood having a low viscosity but also the menstrual blood having a high viscosity and stickiness, the liquid-permeable surface sheet 3 can be easily passed through the apertures 20 and a liquid residue on the surface is generated. Difficult to eliminate stickiness when absorbing body fluids.

  In particular, the sanitary napkin 1 has a structure in which bodily fluid easily flows into the bodily fluid storage space S in which the second convex portion 15 is provided by forming the flow-promoting slope 17 on the first convex portion 14 as described above. Therefore, the body fluid that has flowed into the body fluid storage space S can easily pass through the liquid-permeable surface sheet 3 through the opening 20 formed in the second convex portion 15.

  Here, the opening 20 provided in the liquid-permeable surface sheet 3 is formed in the second convex portion 15 having a relatively lower height, avoiding the first convex portion 14, so that the first The state in which the convex portion 14 is higher than the second convex portion 15 and bulges to the skin side can be maintained, and the first convex portion 14 is in contact with the skin surface. No fear.

  In the sanitary napkin 1, the second convex portions 15, 15 are formed in a state in which a laminate of the liquid-permeable surface sheet 3 and the second sheet 5 provided with the above-described uneven pattern is laminated on the skin surface of the absorbent body 4. In addition to forming pin holes 20 and 22 in the liquid-permeable surface sheet 3 and the second sheet 5, respectively, as shown in FIG. 4 by performing pin embossing from the surface side of the liquid-permeable surface sheet 3, It is desirable to form the depression 21 on the surface of the absorbent body 4 on the liquid-permeable surface sheet 3 side.

  As described above, in the sanitary napkin 1, the openings 20 and 22 are formed in the liquid-permeable surface sheet 3 and the second sheet 5, respectively, and a recess is formed on the surface of the absorbent body 4 on the liquid-permeable surface sheet 3 side. 21 is formed, so that the liquid-permeable surface sheet 3 and the second sheet 5 through the apertures 20 and 22 can be used not only for dry menstrual blood having low viscosity but also for menstrual blood having high viscosity and stickiness. Is easy to pass, liquid residue on the surface hardly occurs, and the sticky feeling at the time of body fluid absorption is eliminated. In addition, the body fluid that has passed through the openings 20 and 22 enters the recessed portion 21 of the absorber 4 so that the body fluid is quickly absorbed by the absorber 4.

  The pin embossing is a needle-like needle shape in which the tip is thin and sharp from the surface side of the liquid-permeable surface sheet 3 in a state where the second sheet 5 and the liquid-permeable surface sheet 3 are laminated on the skin surface of the absorbent body 4. By piercing the protrusions, openings 20 and 22 are formed in the liquid-permeable surface sheet 3 and the second sheet 5, respectively, and a recess 21 is formed in the absorbent body 4.

  The pin embossing is formed on the same axis with respect to the napkin thickness direction from the top of the second protrusion 15 by piercing the needle-like protrusion into the top of the second protrusion 15 bulging in a dome shape. Preferably, 20, 22 and the recess 21 are formed. By forming the opening 20 at the top of the second convex portion 15, body fluid that has passed through the liquid-permeable surface sheet 3 through the opening 20 is prevented from returning to the skin side through the opening 20 again. As a result, the liquid residue on the surface is less likely to occur.

  The opening 20 of the liquid-permeable surface sheet 3 is a through-hole through which the liquid-permeable surface sheet 3 is penetrated in the thickness direction between the front surface side and the back surface side by the pin embossing. The opening 20 is preferably formed in a circular shape in plan view, but may be formed in an elliptical shape, an oval shape, or a polygonal shape.

  When pin embossing is performed on the second convex portion 15, as shown in FIG. 4, the peripheral portion of the opening 20 of the liquid-permeable surface sheet 3 is disposed on the non-skin side from the liquid-permeable surface sheet 3. Without being connected to the member (second sheet 5 or absorber 4) to be formed, it may be provided on the skin side away from this member, and as shown in FIG. 9, the recess 21 of the absorber 4 is covered. You may form so that it may do.

  That is, in the example shown in FIG. 4, the liquid-permeable surface sheet 3 bulges in a dome shape on the skin side in the second convex portion 15 with the opening 20 formed in the liquid-permeable surface sheet 3. A state in which a dome-shaped space is formed between the liquid-permeable surface sheet 3 and the second sheet 5 is maintained. As a result, body fluid that has passed through the liquid-permeable surface sheet 3 through the opening 20 can be further prevented from returning to the skin side. In order to provide the peripheral portion of the opening 20 of the liquid-permeable surface sheet 3 so as to be separated from the skin side without being connected to the non-skin side member, the tip is particularly thin and sharp when the pin embossing is performed. By using the needle-like protrusion and piercing the liquid-permeable surface sheet 3 with the needle-like protrusion, the opening 20 is smoothly formed without the liquid-permeable surface sheet 3 being pulled toward the absorber 4 side. Alternatively, the liquid-permeable surface sheet 3 is made of a thermoplastic material, and pin holes are embossed with needle-like protrusions heated to a predetermined temperature, so that the liquid-permeable surface sheet 3 is softened and the openings 20 are formed. You may make it form. As shown in FIG. 4, the peripheral edge of the opening 20 may be formed such that the left and right edges are opposed to each other without extending to the non-skin side. It may be formed to be bent to the side and slightly extend to the non-skin side to the extent that it does not contact the non-skin-side second sheet 5 or the absorbent body 4.

  On the other hand, in the example shown in FIG. 9, the peripheral portion of the opening 20 of the liquid-permeable surface sheet 3 and the peripheral portion of the opening 22 of the second sheet 5 are each stretched toward the absorber 4, It is formed so as to cover the inner surface of 21. As a result, the body fluid that has passed through the opening 20 of the liquid-permeable surface sheet 3 enters the recess 21 of the absorbent body 4 as it is along the peripheral edge of the stretched opening 20, and this recess Absorption of body fluid through the absorber 21 to the absorber 4 is likely to occur. In this example, out of the liquid-permeable surface sheet 3 constituting the second convex portion 15 that bulges to the skin side, only the peripheral portion of the opening 20 is stretched to the second sheet 5 and the absorbent body 4 on the non-skin side. The other 2nd convex part 15 other than that is connected and the state which protruded to the skin side is hold | maintained. That is, inside the second convex portion 15, a donut-shaped space is formed around the liquid-permeable surface sheet 3 extending from the opening 20. In order to form the peripheral edge portion of the opening 20 of the liquid-permeable surface sheet 3 so as to cover the hollow portion 21 of the absorbent body 4, a needle-like protrusion having a slightly narrowed tip is used when pin embossing is performed. When the surface of the liquid-permeable surface sheet 3 is stabbed, it does not open in the portion that bulges to the skin side, and when the tip of the needle-like protrusion reaches the second sheet 5 or the absorber 4 portion, these It can be set as the structure which can penetrate the liquid-permeable surface sheet 3 by adding this reaction force.

The area of the opening 20 provided in the liquid-permeable surface sheet 3 is 0.1% to 50%, preferably 3% with respect to the area of the base end where the second convex portion 15 bulges to the skin side. -30%, more preferably 5-15%. The area of the concrete the apertures 20, 0.01mm ² ~8mm ^2, preferably 0.1mm ² ~8mm ^2, more preferably preferably set to 0.3 mm ² to 5 mm ^2. If the area of the aperture 20 is too small, viscous bloody menstrual blood cannot pass through, and if the area of the aperture 20 is too large, there is a risk that body fluid may return through the aperture 20, As the hole 20 is enlarged, the hollow portion 21 of the absorbent body 4 becomes larger, which causes a problem that the body fluid absorption capacity of the absorbent body 4 decreases.

  The said recessed part 21 is a recessed part which squeezed the said absorber 4 to the predetermined | prescribed depth by giving the said pin embossing from the surface side (liquid-permeable surface sheet 3 side) of the said absorber 4. FIG. The recess 21 does not penetrate to the back surface side of the absorber 4 and has the bottom of the absorber 4. The recess 21 is formed substantially coaxially in the napkin thickness direction with respect to the opening 20 of the liquid-permeable surface sheet 3. In the periphery of the hollow portion 21, the fibers of the absorber are densely formed, and the action of drawing body fluid by the capillary action of the fibers is enhanced.

  The recess 21 is preferably formed in a recess having a predetermined depth without penetrating the front surface side and the back surface side of the absorber 4. Thereby, the bodily fluid absorption from the bottom part of the hollow part 21 is also attained, and it can suppress that the absorption capacity of the absorber 4 reduces. The depth of the recess 21 is 20% to 90%, preferably 30% to 60% of the thickness of the absorber 4.

As shown in FIG. 4, the cross-sectional shape of the recess 21 is preferably formed in a conical shape that becomes thinner toward the bottom. The area of the depression 21 on the skin side surface of the absorbent body 4 is such that the depression 21 is formed by piercing a needle-like protrusion from the surface side of the liquid-permeable surface sheet 3. is substantially formed equal to or smaller than the aperture 20, 0.01mm ^{2 ~6mm 2} Specifically, ^preferably, preferably set to 0.1mm ² ~6mm 2.

  The opening 22 of the second sheet 5 is a through hole that penetrates the second sheet 5 in the thickness direction between the front surface side and the back surface side by the pin embossing. The opening 22 is formed substantially coaxially with the opening 20 of the liquid-permeable surface sheet 3 in the napkin thickness direction.

The opening 22 is preferably formed in a circular shape in plan view, but may be formed in an elliptical shape, an oval shape, or a polygonal shape in accordance with the opening 20 of the liquid-permeable surface sheet 3. Is the area of the opening 22 substantially equal to the opening 20 of the liquid-permeable surface sheet 3 because the hole 22 is formed by piercing a needle-like protrusion from the surface side of the liquid-permeable surface sheet 3? is formed smaller than, specifically, 0.01mm ^{2 ~7mm 2, preferably} in an as 0.1mm ² ~7mm 2.

  The peripheral edge of the opening 22 may be formed so as to be separated from the skin side of the absorbent body 4 as shown in FIG. Alternatively, as shown in FIG. 9, the absorbent body 4 may be formed so as to cover the hollow portion 21.

  By the way, as shown in FIG. 1, the pin embossing may be applied to all the second convex portions 15, 15..., And as shown in FIG. 10, the region corresponding to the body fluid discharge portion of the wearer. May be applied only to

  Further, the pin embossing may be applied to all the second convex portions 15 existing in a predetermined region, or may be performed at a ratio of one at several places such as every other place or every other place. Also good.

〔Production method〕
Next, in the method for manufacturing the sanitary napkin 1, a step of performing pin embossing after forming a concavo-convex pattern on the liquid-permeable surface sheet 3 will be described in detail.

  In order to form a concavo-convex pattern on the liquid-permeable surface sheet 3 and to produce a laminated structure of the liquid-permeable surface sheet 3 and the second sheet 5, a concavo-convex pattern processing apparatus 30 shown in FIG. 11 is used.

  The concavo-convex pattern processing apparatus 30 corresponds to the surface on the surface of a plurality of convex portions corresponding to the first convex portions 14, a number of convex portions corresponding to the second convex portions 15, and the first emboss 10. The first embossing roll 31 in which a large number of concave portions and a large number of concave portions corresponding to the second embossing 11 are disposed, the first embossing roll 31 and the first embossing roll 31 are disposed to face each other. A second embossing roll 32 in which a number of concave portions corresponding to the convex portions of the roll 31 and a number of convex portions corresponding to the concave portions of the first embossing roll 31 are disposed, and a flat roll having a flat surface 33, and by passing the liquid-permeable surface sheet 3 between the first embossing roll 31 and the second embossing roll 32, the convex portion of the first embossing roll 31 and the second D The first convex portion 14 and the second convex portion 15 are processed by meshing with the concave portion of the boss roll 32, and then the liquid-permeable surface sheet 3 travels on the surface of the second emboss roll 32, The embossed portion of the conductive surface sheet 3 is laminated with the separately fed second sheet 5 while being held in the concave and convex portions of the second embossing roll 32, and the liquid-permeable surface sheet 3 and the second sheet are laminated. 5, the first embossing 10 and the second embossing 11 are processed by the convex portions of the second embossing roll 32 by passing between the second embossing roll 32 and the flat roll 33 in a laminated state. The liquid-permeable surface sheet 3 and the second sheet 5 are bonded by thermal fusion.

  Next, the process of pin embossing after laminating the laminated body of the liquid-permeable surface sheet 3 and the second sheet 5 manufactured by the uneven pattern processing apparatus 30 on the upper surface of the absorbent body 4 will be described.

  As the pin embossing, a plate-shaped or roll-shaped surface is provided with a large number of needle-like protrusions in a state where the laminated structure of the liquid-permeable surface sheet 3 and the second sheet 5 is laminated on the upper surface of the absorber 4. After aligning the needle-like protrusions on the second convex portions 15 of the liquid-permeable surface sheet 3 by the embossing device, the second convex portions 15 of the liquid-permeable surface sheet 3 are A method of performing pin embossing from the surface side of the liquid-permeable surface sheet 3 can be used.

  Moreover, when performing the said pin embossing, you may make it perform the uneven | corrugated pattern processing of the said liquid-permeable surface sheet 3, and pin embossing simultaneously by the processing apparatus 34 which deform | transformed the said uneven | corrugated pattern processing apparatus 30. FIG. As shown in FIG. 12, the processing device 34 has a large number of convex portions 35 a, 35 a... Corresponding to the first convex portion 14 and a large number of convex shapes corresponding to the second convex portion 15 on the surface. .., A large number of concave portions (not shown) corresponding to the first emboss 10, a large number of concave portions 35 c, 35 c corresponding to the second emboss 11, and the second convex portion 15. The first embossing roll 35 disposed on the top of the convex portion 35b corresponding to the first embossing roll 35 is disposed opposite to the first embossing roll 35, and the surface of the first embossing roll 35 is disposed on the surface. A large number of concave portions 36a, 36a ... corresponding to the convex portions 35a, a large number of concave portions 36b, 36b ... corresponding to the convex portions 35b of the first embossing roll 35, and a concave portion of the first embossing roll 35. Compatible with 35c A plurality of convex portions 36c, 36c,..., A second embossing roll 36 in which a plurality of needle-like protrusions 36d, 36d... Are disposed on the concave portion 35d of the first embossing roll 35, and the second embossing roll 36. And a third embossing roll 37 having a number of concave portions 37a, 37a,... Corresponding to the needle-like protrusions 36d on the surface, and a surface facing the second embossing roll 36 is flat. A flat roll 38, and the convex portion of the first embossing roll 35 by passing the liquid-permeable surface sheet 3 between the first embossing roll 35 and the second embossing roll 36. 35a and the embossing of the concave portion 36a of the second embossing roll 36, the processing of the first convex portion 14 and the first embossing roll 35 Processing of the second convex portion 15 by meshing the concave portion 35b and the concave portion 36b of the second embossing roll 36, and the concave portion 35d of the first embossing roll 35 and the needle-like projection 36d of the second embossing roll 36, The opening process of the opening 20 provided in the second convex portion 15 of the liquid-permeable surface sheet 3 is performed, and then the liquid-permeable surface sheet 3 travels on the surface of the second embossing roll 36, While the processed portion of the liquid surface sheet 3 is held by the concave portion, the convex portion, and the needle-like protrusion 36d of the second embossing roll 36, the liquid surface sheet 3 is laminated with the separately fed second sheet 5 and these liquid-permeable surface sheets. 3 and the second sheet 5 in a laminated state by passing between the second embossing roll 36 and the third embossing roll 37, the need for the second embossing roll 36. The first embossing is performed by the opening treatment of the opening 22 provided in the second sheet 5 by meshing the lug-shaped protrusion 36d with the concave portion 37a of the third embossing roll 37, the convex portion 36c of the second embossing roll 36, and the like. The liquid-permeable surface sheet 3 and the second sheet 5 are heat-fused and bonded by the 10 and the second emboss 11 and finally the liquid-permeable surface sheet 3 and the second sheet 5 are the second emboss rolls. 36, and the processed portion of the liquid-permeable surface sheet 3 is held by the concave portion, the convex portion, and the needle-like protrusion 36d of the second embossing roll 36, and the opening treatment portion of the second sheet 5 is While being held by the needle-like protrusion 36d of the second embossing roll 36, it is laminated with the absorbent body 4 that is separately fed, and these liquid-permeable surface sheets 3 and seca By passing between the second embossing roll 36 and the flat roll 38 in the laminated state of the sheet 5 and the absorbent body 4, the needle-like protrusion 36d of the second embossing roll 36 is pierced into the absorbent body 4, thereby absorbing the absorbent body. 4 can be configured such that the recess 21 is processed.

[Other examples]
(1) In the above embodiment, the virtual line 13 is an ellipse that is long in the napkin longitudinal direction, but it may be circular or polygonal, or may be formed in a shape that is long in the napkin width direction.
(2) The second sheet 5 may be made to function as an absorber by using a high-absorbent resin mixed in an air laid absorber, and the absorber 4 may be eliminated.

  DESCRIPTION OF SYMBOLS 1 ... Sanitary napkin, 2 ... Liquid-impermeable back sheet, 3 ... Liquid-permeable surface sheet, 4 ... Absorber, 5 ... Second sheet, 10 ... 1st emboss, 11 ... 2nd emboss, 12 ... 1st image Formation region, 13 ... virtual line, 14 ... first convex portion, 15 ... second convex portion, 16 ... second defined region, 17 ... second falling slope, 18 ... second imaginary line, 20 ... opening, 21 ... Recessed portion, 22 ... Open hole, 30 ... Concavity and convexity pattern processing device, 31 ... First embossing roll, 32 ... Second embossing roll, 33 ... Flat roll, 34 ... Processing device, 35 ... First embossing roll, 36 ... Second Embossing roll, 37 ... 3rd embossing roll, 38 ... Flat roll

Claims (7)

In the absorbent article in which an absorbent body is interposed between the liquid-permeable top sheet and the back sheet,
A plurality of first embossments and second embosses are intermittently applied to the liquid-permeable surface sheet, and a first defined area in which the first embosses and second embosses are arranged in a predetermined pattern is an absorbent article. The second embossment provided in each of the first defined regions is provided in a lattice shape along the longitudinal direction and the width direction of the first and second corners surrounded by the adjacent first defined regions. A second defining area is provided to include,
A plurality of first protrusions bulging toward the skin with the first embossing and the second embossing as base ends are formed in the first defining region, and at least the second embossing region is formed in the second defining region. A number of second protrusions bulging to the skin side at a relatively lower height than the first protrusion with the embossed base are formed,
In the first defining region, the first emboss is arranged so that the center is located on an elliptical or circular imaginary line that is closed, and the second emboss is adjacent to the first imaginary line along the imaginary line. Between the embosses, the center is located on the inner side of the imaginary line, and the inner edge of the second emboss is inserted into the first convex part,
An absorbent article, wherein an opening penetrating the liquid-permeable surface sheet is provided in the second convex portion of the liquid-permeable surface sheet.   The absorbent article according to claim 1, wherein a recess is formed on a surface of the absorbent body corresponding to the opening on the liquid-permeable surface sheet side.   The absorbent article according to claim 1, wherein the opening is formed at a top portion of the second convex portion.   The peripheral part of the said opening is provided so that it may space apart on the skin side, without connecting to the member arrange | positioned on the non-skin side rather than the said liquid-permeable surface sheet. Absorbent article. The absorptive article according to claim 2 with which a peripheral part of said opening covers said hollow part of said absorber. Area of the apertures, the absorbent article according to any one claims 1 to 5 is 0.01mm ² ~8mm ^2.   The said opening is an absorbent article in any one of Claims 1-6 provided in the area | region corresponding to a bodily fluid discharge part at least.

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