RU2664372C1 - Absorbing product - Google Patents

Abstract

FIELD: manufacturing technology.SUBSTANCE: in the composite sheet (10), the first sheet (1) and the second sheet (2) partially join one another and form plurality of connected areas (31 and 32). In the corresponding areas the first sheet (1) is not attached to the second sheet (2) and projects so, that it is located at a distance from the second sheet (2) and forms plurality of convexities (40) projecting towards the user's skin. Composite sheet (10) has the first direction and the second direction, which is perpendicular to the first direction. Passing in the second direction (Y) not embossed areas (N), and not containing the connected regions throughout the entire second direction, and the embossed areas (E), passing in the second direction and containing arranged in the regular manner connected areas, are alternately formed in the first direction (X). In the not embossed areas (N) continuously passing in the second direction (Y) continuous convexities (40) are formed. Continuous convexities (40) comprise having the small width portions (42) and regularly located in the second direction (Y).EFFECT: disclosed is absorbing product.32 cl, 22 dwg

Description

FIELD OF THE INVENTION

[0001]

The present invention relates to an absorbent article, such as a disposable diaper, sanitary napkin, or pad for incontinence sufferers.

State of the art

[0002]

In the past, a sheet on the skin side where the surface facing the skin of the user becomes irregular by embossing or the like was known as the top sheet of an absorbent article, such as a disposable diaper, sanitary napkin, or incontinence pad. In addition, there is also known a technology for creating a space between the skin of the user and the upper sheet by irregularly forming the surface of the upper sheet facing the skin in order to dissipate the moisture produced by the excreted urine or menstrual blood

[0003]

With respect to documents of the prior art that relates to a top sheet having a three-dimensional shape, Patent Document 1 describes a fibrous sheet having a heat shrink fiber layer containing heat shrink fibers that are heat shrinkable and a plurality of embossed portions where a plurality of hemispherical sheets are formed on the fiber sheet high bulges having the highest height, many hemispherical low bulges having the lowest height, and many hemispherical averages bulges that are shorter than the high bulges and are higher than the low bulges. On this fibrous sheet, the first rows of bulges formed by arranging the plurality of medium bulges in the first direction, and the second rows of bulges formed by arranging the plurality of high bulges in the first direction, are alternately arranged about the second direction, which is perpendicular to the first direction. In addition, each middle bulge is surrounded by four middle bulges, and each of the plurality of low bulges is located between the middle bulges that are adjacent to each other in the first direction, and between the high bulges that are adjacent to each other in the second direction .

[0004]

In addition, Patent Document 2 describes an absorbent article in which substantially rectangular or substantially elliptical embossed recesses are formed on the surface of the top sheet of the absorbent article, in which the embossed rows formed from a plurality of such embossed recesses are arranged in different orientations between the longitudinal ends and the center of the absorbent article. .

List of references

Patent Literature

[0005]

Patent Document 1: Japanese Patent Application No. JP 2014-70299A

Patent Document 2: Japanese Patent Application No. JP 2004-298271A

SUMMARY OF THE INVENTION

[0006]

The present invention relates to an absorbent article comprising a top sheet, a bottom sheet and an absorbent element located between the top sheet and the bottom sheet. The top sheet includes a composite sheet having a first direction and a second direction that is perpendicular to the first direction, and the first direction corresponds to a longitudinal direction of the product extending along the anteroposterior direction of the user when the user is wearing an absorbent product. The composite sheet includes a first sheet and a second sheet that are laminated, a plurality of connected areas are formed by partially joining the first sheet and the second sheet to each other by embossing, and the first sheet, in its parts excluding the connected areas, acts so that it located at a distance from the second sheet and forms a lot of bulges protruding towards the skin of the user. The composition sheet includes: unprinted areas that extend in the second direction, and on which there are no connected areas throughout the second direction; and embossed areas that extend in the second direction, in which there are connected areas arranged in a regular manner, wherein unprinted areas and embossed areas are alternately formed in the first direction. The embossed areas include a first embossed area and a second area between which an un embossed area is located. When, in each of the first embossed area and the second area, a contour-forming convex line is formed by rectilinearly connecting the midpoints of the ends that are closest to the un-embossed area, the connected areas located in the second direction, the contour-forming convex line is a broken line in which the far points and proximal points located at different distances from the unprinted area are repeated in the second direction. Unmarked areas include, as a bulge, a continuous bulge continuously extending in a second direction. A continuous bulge has a tapering part, the width of which regularly tapers in the second direction. The tangent lines of the connected area forming the embossed area and extending in the first direction and the second direction do not intersect any other connected areas forming the embossed area.

Brief Description of the Drawings

[0007]

[FIG. 1] FIG. 1 is a plan view illustrating the basic structure of a disposable diaper, which is an absorbent article according to an embodiment of the present invention.

[FIG. 2] FIG. 2 is a cross-sectional view taken along line II-II of FIG. one.

[FIG. 3] FIG. 3 is a partial sectional view of an enlarged perspective view of a portion of a composite sheet that is preferably used as the top sheet of an absorbent article according to the present invention.

[FIG. 4] FIG. 4 is an enlarged plan view of a portion of a composite sheet that is preferably used as the top sheet of an absorbent article according to the present invention.

[FIG. 5] FIG. 5 (a) is a cross-sectional view taken along the line Va-Va in FIG. 4, FIG. 5 (b) is a cross-sectional view taken along the line Vb-Vb in FIG. 4 and FIG. 5 (c) is a cross-sectional view taken along the line Vc-Vc in FIG. four.

[FIG. 6] FIG. 6 is an enlarged plan view of the main part of the composite sheet illustrated in FIG. 3.

[FIG. 7] FIG. 7 is an enlarged top view of the main part of the composite sheet illustrated in FIG. 3.

[FIG. 8] FIG. 8 (a) is an enlarged plan view of the main part of the composite sheet illustrated in FIG. 3 and FIG. 8 (b) is a plan view (corresponding to FIG. 8 (a)) illustrating an example in which a tangent line extending in a first direction or a second direction of a connected region forming an embossed region intersects another connected region forming an embossed region.

[FIG. 9] FIG. 9 is a cross-sectional photograph of a composite sheet illustrated in FIG. 3 carried out in a first direction illustrating the effects of the present invention.

[FIG. 10] FIG. 10 is a schematic diagram illustrating an apparatus that is suitably used in the manufacture of the composite sheet illustrated in FIG. 3.

[FIG. 11] FIG. 11 is an exploded perspective view of part of a first roller of the device illustrated in FIG. 10.

[FIG. 12] FIG. 12 is a diagram illustrating a peripheral surface that is unfolded on a plane of the first roller of the device illustrated in FIG. 10.

[FIG. 13] FIG. 13 is a diagram illustrating a peripheral surface that is unfolded on a plane of a second roller of the device illustrated in FIG. 10.

[FIG. 14] FIG. 14 is a diagram illustrating a state in which the protuberances of the second roller illustrated in FIG. 13 are engaged with the peripheral surface of the first roller, illustrated in FIG. 12, which is unfolded on a plane.

[FIG. 15] FIG. 15 is an enlarged plan view (corresponding to FIG. 4) illustrating another example of a composite sheet, which is preferably used as the top sheet of an absorbent article according to the present invention.

[FIG. 16] FIG. 16 is an enlarged plan view of the main part of the composite sheet illustrated in FIG. fifteen.

[FIG. 17] FIG. 17 is an enlarged plan view of the main part of the composite sheet illustrated in FIG. fifteen.

[FIG. 18] FIG. 18 is a plan view illustrating the back of a disposable diaper having a more preferable structure than the main structure illustrated in FIG. one.

[FIG. 19] FIG. 19 is a schematic plan view illustrating a preferred arrangement of continuous bulges and elastic elements in the region of the elastic elements formed in the back of the disposable diaper illustrated in FIG. eighteen.

Description of Embodiments

[0008]

When the top sheet acquires a three-dimensional shape, situations arise in which the absorbent article is deformed when the user wears the absorbent article according to the three-dimensional pattern, and thus the upper sheet is compressed in the transverse direction of the absorbent article, and the protrusions of the recesses and bulges are destroyed or deformed, and the effect of moisture dispersion by recesses and bulges cannot be manifested sufficiently.

[0009]

Accordingly, the present invention provides an absorbent article that can solve the aforementioned problems of the prior art.

[0010]

The present invention will be described below with reference to the drawings based on corresponding preferred embodiments.

FIG. 1 and 2 illustrate the basic structure of a disposable diaper 100 (hereinafter, referred to simply as a diaper 100), which is an absorbent article according to an embodiment of the present invention.

As illustrated in FIG. 1 and 2, the diaper 100 includes a liquid-permeable topsheet 12, a liquid-impervious bottomsheet 13, and an absorbent element 14 that is located between the topsheet 12 and the bottomsheets 13. With respect to the bottomsheets 13, liquid-tightness is a concept, also including low permeability to liquids, and also corresponds to the case in which the bottom sheet 13 is formed from a water-repellent sheet or similar material, in addition to the case in which the bottom sheet 13 completely prevents kvoznoe passage of liquid.

[0011]

The diaper 100 has a longitudinal direction of the product Xa, which is a direction corresponding to the anteroposterior direction of the user when the user is wearing the diaper, and a transverse direction of the product Ya, which is perpendicular to the longitudinal direction of the product Xa, when the diaper 100 is unfolded in a flat shape, as illustrated in FIG. 1. In addition, the diaper 100 includes, in the longitudinal direction of the product Xa, a front portion A that is worn on the front side of the user when the user is wearing the diaper, a back portion B that is worn on the rear side of the user when the user is wearing the diaper, and the crotch portion C, which is located between the front and the back of B. The diaper 100 is an open-type disposable diaper that includes retainer tapes 17 that are present on both transverse lateral edge portions of the rear part ti B, and fixing zone 18, which is present on the outer surface of the front portion A, in which the fixing belt 17 are fixed.

[0012]

The absorbent element 14 of the diaper 100 includes an absorbent core 14a and a core wrapping sheet 14b that wraps the absorbent core 14a. The absorbent core 14a may be formed from a fibrous laminated material, which consists of an absorbent fiber, such as cellulose fiber, or a mixed fibrous laminated material, which consists of an absorbent fiber and an absorbent polymer. Examples of the absorbent fiber include cellulose-based hydrophilic fibers, such as cellulose fibers, viscose fiber, cotton fiber, and cellulose acetate. Examples of absorbent fibers include, in addition to cellulose-based hydrophilic fibers, materials obtained by hydrophilizing fibers consisting of synthetic polymers such as polyolefin, polyester and polyamide using a surfactant. As the core-wrapping sheet 14b, for example, thin paper or a permeable non-woven fabric is used. The absorbent core 14a may be completely wrapped with one core wrapping sheet 14b, or it may be wrapped by combining two or more core wrapping sheets 14b. As the bottom sheet 13, a laminated sheet is used, which includes a liquid-impermeable or water-repellent polymer film, a laminated sheet consisting of a polymer film and a non-woven fabric, or a similar material.

[0013]

Since the leakproof cuff forming sheets 15, which include the elastic elements 15a, are arranged on both sides in the longitudinal direction of the diaper 100 Xa of the diaper 100, the leakproof cuffs that rise towards the wearer's skin due to the compression of the elastic elements 15a are formed in the crotch portion C when the user wears a diaper. In addition, since the elastic elements 16 located on the leg are located in parts that are worn around the legs, the crotch part C is stretched, cuffs located on the legs that improve circumferential fit to the wearer's legs are formed in the crotch part C due to compression of the on the legs of the elastic elements 16 when the user wears a diaper.

[0014]

The top sheet 12 of the diaper 100 is formed from the composite sheet 10 illustrated in FIG. 3 and 4. FIG. 3 is a partial sectional view of an enlarged perspective view of a portion of the composite sheet 10.

[0015]

As illustrated in FIG. 3, in the composite sheet 10, the first sheet 1 and the second sheet 2, which are laminated, are partially joined together by embossing, and a plurality of connected regions are formed. The first sheet 1, in its parts excluding connected areas, acts in such a way that it is at a distance from the second sheet 2 and forms a plurality of bulges protruding towards the skin of the user. The surface that is located on the side of the second sheet 2 of the composite sheet 10 is substantially flat, and substantially wave-shaped recesses and bulges are formed on the surface of the sheet corresponding to the first sheet 1.

[0016]

Each of the first sheet 1 and the second sheet 2 is formed from sheet material. Fibrous sheets, such as a nonwoven fabric, a woven fabric, a knitted fabric, a film, and the like, can be used as the sheet material. It is preferable that the fibrous sheet is used as a sheet material with respect to touch feel or similar conditions, it is particularly preferred that a nonwoven fabric is used as a sheet material. The first sheet 1 and the second sheet 2 may be formed from sheet materials of the same type, or they may be formed from sheet materials of various types.

[0017]

When the nonwoven fabric is used as the sheet material to form the first sheet 1 and the second sheet 2, examples of the nonwoven fabric include a pneumocoupled nonwoven fabric, a spunbond nonwoven fabric, a hydrospun nonwoven fabric, a meltblown nonwoven fabric, a polymer bonded nonwoven fabric, and needle punched nonwoven fabric and etc. A multilayer material may also be used in which two or more of these types of nonwoven fabric are combined with each other, or a multilayer material l, wherein said types of nonwoven webs are combined with the film, and t. n. Among them, it is preferable to use pnevmospletennogo nonwoven or spunbonded nonwoven webs. The surface density of the nonwoven fabric is preferably 10 g / m ² or more, and more preferably 15 g / m ² or more, and is preferably 40 g / m ² or less, and more preferably 35 g / m ² or less. The surface density of the nonwoven fabric is preferably from 10 to 40 g / m ² , and more preferably from 15 to 35 g / m ² .

[0018]

Fiber, which is made of various types of thermoplastic polymers, can be used as a fiber to form a non-woven fabric. Examples of thermoplastic polymers include a polyolefin such as polyethylene and polypropylene, a polyester such as polyethylene terephthalate, a polyamide such as nylon 6 and nylon 66, polyacrylic acid, polymethacrylic acid alkyl ester, polyvinyl chloride, polyvinylidene chloride, etc. One of these polymers can be used individually, or these polymers can be used in the form of a mixture containing two or more polymers. In addition, these polymers can be used in the form of a composite fiber, such as a composite fiber of a type consisting of a core and a sheath, or a composite fiber of a type consisting of parallel components.

[0019]

The composite sheet 10 has a first direction X and a second direction Y, perpendicular to the first direction X in the plane of the sheet. When the composite sheet 10 is contained in the diaper 100, the first direction X corresponds to the longitudinal direction Xa of the diaper 100 (longitudinal direction of the product), and the second direction Y corresponds to the transverse direction Ya of the diaper 100 (transverse direction of the product).

In addition, as a rule, the first X direction of the composite sheet 10 often corresponds to the unwinding direction of the original web for the first sheet 1 and the second sheet 2. When the first sheet 1 and the second sheet 2 are, for example, a nonwoven fabric, the first X direction of the composite sheet 10 is often corresponds to the direction of the main orientation of the fiber forming the non-woven fabric. In addition, the first X direction of the composite sheet 10 also represents a direction of movement (machine direction or MD) when the composite sheet 10 is manufactured in a manner that will be described later.

[0020]

FIG. 4 is a plan view of the composite sheet 10 illustrated in FIG. 3. FIG. 5 (a) -5 (c) are cross-sectional images taken along line Va-Va in FIG. 4, a cross-sectional image drawn along the Vb-Vb line and a cross-sectional image drawn along the Vc-Vc line, respectively. FIG. 6 is an enlarged plan view illustrating a portion of FIG. four.

As illustrated in FIG. 3 and 4, a plurality of continuous bulges 40 that continuously extend in the second direction Y are formed at constant intervals in the first direction X in the form of bulges on the surface of the composite sheet 10. As illustrated in FIG. 4 and 5 (a), each of the continuous bulges 40 is formed by connecting the first bulges 41 and the second bulges 42, which are arranged alternately in the second direction Y. In the present description, the state in which the bulges join each other means a state in which two adjacent bulges are not separated from each other by the connected region, part of the first bulge forms a part of the second bulge, and part of the second bulge forms a part of the first bulge.

[0021]

The first bulges 41 and the second bulges 42, respectively, have hollow parts on their back side, and the hollow parts on the back side of the first bulges 41 and the hollow parts on the back side of the second bulges 42 are continuously arranged, forming continuous hollow parts 40V, continuously passing in the second direction Y on the back of continuous bulges 40.

As illustrated in FIG. 6, the first bulges 41 and the second bulges 42 are elliptical in a plan view. The major axis of each of the elliptical first bulges 41 corresponds to the first direction X, and the major axis of each of the elliptical first bulges 42 corresponds to the second direction Y. In addition, the first bulges 41 and the second bulges 42 in each case are formed in a shape that has a vertex in both transverse sections drawn along the first direction X and the second direction Y.

In the composite sheet 10, the surface on the side of the first sheet 1, which faces the skin of the user, when the composite sheet 10 is contained in the diaper 100, contains many continuous bulges 40 so that it has an uneven shape, and the surface on the side of the second sheet 2, which facing the absorbent element 14, is almost flat.

[0022]

As illustrated in FIG. 4, on the composite sheet 10, unprinted regions N extending in the second direction Y and not containing connected regions throughout the entire second direction Y, and embossed regions E extending in the second direction Y and containing connected regions arranged regularly, are alternately formed in first direction X.

The first connected regions 31 and the second connected regions 32 are formed in the embossed region E as connected regions, which are formed when the first sheet 1 and the second sheet 2, which are laminated, are partially joined to each other by embossing. The first sheet 1 and the second sheet 2 are compressed as a whole by embossing in the indicated connected areas 31 and 32, so that the first sheet and the second sheet simultaneously have a higher density in the connected areas 31 and 32 than in any other parts. Preferably, the first sheet and the second sheet are simultaneously fused to each other when the polymer is melted, which is the material of one or both sheets of the first sheet and the second sheet, and the polymer solidifies after melting.

[0023]

According to this embodiment, the positions of the first connected regions 31 and the second connected regions 32 in the second direction Y are different from each other, as illustrated in FIG. 6. Furthermore, the lengths L1 and L2 of the first connected regions 31 and the second connected regions 32 in the second direction Y also differ from each other. All of the first connected regions 31 and the second connected regions 32 are rectangular in a plan view, and each side of the corresponding rectangle corresponds to a first X direction or a second Y direction.

The rectangular first connected regions 31 have long sides corresponding to the second Y direction and are arranged at intervals along the second Y direction. Accordingly, a plurality of first connected regions R1 is formed along the second Y direction. Similarly, the rectangular second connected regions 32 have short sides, corresponding to the second direction Y, and are arranged in a row at intervals along the second direction Y. Accordingly, sets of second connected regions R2 are formed along the second Y directions

In the sets of the first connected regions R1, the intervals between the first connected regions 31 in the second direction Y are constant. In the sets of second connected regions R2, the intervals between the second connected regions 32 in the second direction Y are of two types, where the intervals of greater length and the intervals of shorter length are arranged alternately. In each of the plurality of first connected regions R1, all of the positions of the first connected regions 31 when observed in the second direction Y are the same. In addition, in each of the plurality of second connected regions R2, all of the positions of the second connected regions 32 when viewed in the second direction Y are the same.

[0024]

As illustrated in FIG. 6, each of the embossed regions E includes one set of first connected regions R1 and two sets of second connected regions R2 located on both sides in a first direction X of a plurality of first connected regions R1.

If you focus on one first connected region 31, forming a plurality of first connected regions R1, four second connected regions 32, which completely form two sets of second connected regions R2, are located close to the periphery of the first connected region 31 so that the corners of the second connected regions 32, respectively, facing the four corners of the first connected region 31. Accordingly, a group of connected regions 30 is formed, consisting of a group containing one first connected region 31 and four e second connected regions 32 located around the first connected region 31. In each of the embossed regions E, a plurality of such groups of connected regions 30 are formed at constant intervals along the second direction Y.

[0025]

In addition, embossed regions E include a first embossed region and a second embossed region (two embossed regions E), between which the un embossed region N is located. As illustrated in FIG. 7, when, in each of the first embossed region and the second embossed region, a contour-forming convex line Lt is formed by rectilinearly connecting the midpoints of the ends that are closest to the un-embossed area N, the connected regions located in the second direction Y, the contour-forming convex line Lt is present in the shape of a broken line in which the far points P1 and near points P2, located at different distances from the unprinted area N, are repeated in the second direction Y. the convexity line Lt defines the schematic shape of the contour, passing in the second direction Y of the continuous convexity 40 formed in the un embossed region N.

As illustrated in FIG. 7, in the part where the first connected region 31 is present in the second direction Y, the middle point of the end that is closest to the un embossed region N, for the connected region, is the midpoint of the side that faces the un embossed region N of the first connected region 31. B that part where the second connected regions 32 are present in the second direction Y, the midpoint is the midpoint of the side that faces the unextruded region N of each of the second connected regions 32. If the connected regions, whose sides that face the un embossed region N are in the same position in the first direction X, as the second connected regions 32 are located next to each other without any additional connected region located between them in the second direction Y, the midpoint between the middle the side point of the first connected area and the midpoint of the side of the second connected area is taken as the proximal point P2.

[0026]

In composite sheet 10, since the two embossed regions E between which the un embossed region N is located respectively have contouring convex lines Lt having the shape described above, etc., a continuous convexity 40 continuously passing in the second direction Y and containing parts having a small width, which are regularly arranged along the second direction Y, is formed in the unbroken region N, as described above. In particular, as illustrated in FIG. 7, a first convexity 41 of continuous convexity 40 is formed between distal points P1 of a pair of contour-forming convex lines Lt that face each other, with an un embossed region N located between them, and a second convexity 42 of continuous convexity 40 is formed between proximal points P2 of a pair of contour-forming convex lines Lt, which are facing each other, with an unextruded region N located between them. The length L42, in the direction along the first X direction, the second bulge 42 is less than the length L41, in the direction along the first X direction, the first bulge 41. In the continuous bulge 40, the part formed from the second bulge 42 is a tapering part having a width which is less (or the length in the first direction X, which is less) than in the part formed from the first bulge 41.

[0027]

In addition, no tangent line of the connected regions 31 and 32 forming the embossed regions E in the composite sheet 10 extending in the first direction X and in the second direction Y intersects any other connected regions forming the embossed regions E.

In other words, if we focus on one first connected region 31A, illustrated in FIG. 8 (a), it becomes clear that the first connected region 31A has two tangent lines C1 and C2 extending in the first direction X, and two tangent lines C3 and C4 extending in the second direction Y. However, none of the tangent lines C1-C4 does not intersect any other first connected regions 31 or any second connected regions 32 in an embossed region EA including said first connected region 31A. In addition, none of the tangent lines C1-C4 intersects any first connected regions 31 or any second connected regions 32 in the embossed regions E, which do not represent the embossed region EA. The same conditions apply to all of the first connected regions 31.

Moreover, if we focus on one second connected region 32A, illustrated in FIG. 8 (a), it becomes clear that the second connected region 32A has two tangent lines C5 and C6 extending in the first direction X, and two tangent lines C7 and C8 extending in the second direction Y. However, none of the tangent lines C5-C8 does not intersect any first connected regions 31 or any other second connected regions 32 in an embossed region EA including said second connected region 32A. In addition, none of the tangent lines C5-C8 intersects any first connected regions 31 or any second connected regions 32 in the embossed regions E, which do not represent the embossed region EA. The same conditions apply to all of the second connected regions 31.

[0028]

It should be noted that the “no intersection of any other connected regions” state also means a state in which the tangent lines C1 and C2 of the first connected region 31 extending in the first direction X overlap the ends 32e that extend along the first direction X of the second connected regions 32, and a state in which the tangent lines C3 and C4 of the first connected region 31C extending in the second direction Y overlap the ends 32f that extend along the second direction Y of the second connected regions 32C, as illustrated Referring to FIG. 8 (a).

On the other hand, a case in which two tangent lines C1 and C2 along the first X direction of the first connected region 31A intersect the first connected region 31B or the second connected region 32B in another embossed region E, or a case in which two tangent lines C3 and C4 along the second direction Y of the first connected region 31A intersect the first connected region 31 or the second connected region 32, forming another group of connected regions 30 in the same embossed region, as illustrated in FIG. 8 (b) does not correspond to the case of “no intersection of any other connected areas”.

[0029]

As illustrated in FIG. 4 and 6, the composite sheet 10 used according to this embodiment has discontinuous protuberances located in the embossed region 46, each of which is surrounded by an annular recess, in the embossed regions E. In each case, the displaced convexities 46 are formed in a shape that has a vertex in both cross sections drawn along the first direction X and the second direction Y. Located in the embossed convex region 46, respectively, have hollow portions 46V at their reciprocal rone.

[0030]

As illustrated in FIG. 4, a plurality of bulges located in the embossed region 46 are arranged in a row in a straight line at constant intervals along the second direction Y. Accordingly, a plurality of bulges located in the embossed region are formed. In addition, the plurality of second bulges 42 are arranged in a row in a straight line at constant intervals along the second direction Y. Accordingly, a plurality of second bulges are formed. The protuberances 46 and the second convexities 42 located in the embossed region are formed in the same position in the second direction Y. More specifically, the second convexities 42 and the protrusions located in the embossed region 46 are arranged alternately and in the form of a straight line along the first direction X. In addition, as illustrated in FIG. 6, if we focus on the third bulges 43, in addition to the second bulges 42 and located in the embossed region of the bulges 46, the bulges of these three types are arranged regularly and in a straight line along the first direction X in the following order: second bulges 42, third bulge 43, the bulge 46 located in the embossed region, and then the third bulge 43.

[0031]

Each bulge 46 located in the embossed region is separated from the continuous bulges 40 and other bulged 46 located in the embossed region by an annular recess 47. An annular recess 47 is formed from the connected regions and the third bulges 43. In particular, as illustrated in FIG. 6, each annular recess 47 forms two first connected regions 31, four second connected regions 32 and two third convexities 4.3 each of which is located between two second connected regions 32, which are adjacent to each other in the second direction Y. Each the third bulge 43 has an almost rectangular shape, which is oblong in the first direction X in a plan view. The third bulge 43 has a substantially flat upper surface. Although the third bulges 43 are literally “bulges”, the third bulges 43 are relatively lower than any of the first and second bulges 41 and 42, forming continuous bulges 40, and are comparatively lower than those located in the embossed region of the bulge 46, and thus, the third bulges 43 can be considered as recesses in comparison with these bulges.

[0032]

The first bulge 41, the second bulge 42, the third bulge 43 and located in the embossed region of the bulge 46, which are described above, are formed on the first sheet 1, forming the composite sheet 10 used according to this variant implementation. The third bulges 43 have a lower height than any of the first bulges 41, the second bulges 42 and located in the embossed region of the bulge 46.

In addition, when the height of the first bulge 41 is taken to be H1, the height of the second bulge 42 is taken to be H2, the height of the third bulge 43 is taken to be H3 and the height of the bulge 46 located in the embossed region is taken to be H4, these heights preferably satisfy the relations (1) below and (2) and more preferably satisfy the relationships (1) to (3) below.

(1) H1≥H2;

(2) H1> H4, H2≥H4;

(3) H4≥H3.

[0033]

The first connected regions 31 and the second connected regions 32 can be formed by means of various types. When the first sheet 1 and the second sheet 2 are made of a material that can be joined by fusion, fusion using heat, ultrasonic waves or high frequency waves can be used to form the connected areas. A bonding compound can also be used to form bonded regions regardless of the material of the first sheet 1 and second sheet 2. When fusion using heat, ultrasonic waves or high frequency waves is used to form bonded areas 31 and 32 by joining both sheets 1 and 2, connected regions 31 and 32 have a higher density than parts that are not connected regions 31 and 32. When sheets 1 and 2 are formed from fibrous sheets, the distances between fibers is reduced through compacting or each sheet is converted into film form due to loss of shape of the fiber. In the manufacturing method of the composite sheet 10, which will be described later, the connected regions 31 and 32 formed from the fused parts are formed by joining both sheets 1 and 2 during the fusion joining process.

[0034]

The composite sheet 10 having the above structure is used as the top sheet 12 in the diaper 100 according to this embodiment, so that the first direction X corresponds to the longitudinal direction of the article Xa, and the second direction Y corresponds to the transverse direction of the article Ya. Accordingly, moisture, the sources of which are sweat, urine, and other excretions of the wearer while the diaper is being worn, efficiently spread and disperse in the transverse direction of the diaper along the continuous bulges 40. In addition, since each of the unstretched regions N, in which the continuous bulges 40 are formed, is between the embossed regions E having high rigidity, even when the diaper 100 is bent in the longitudinal direction, so that the cross section of the diaper is which is curved in the longitudinal direction takes an arched shape when the user wears a diaper, a convex-like cross-sectional shape of continuous convexes 40 is stably maintained (see FIG. 9). Since the cross-sectional shape of the cross section is stably maintained, the gap formed between the skin and the continuous bulges 40 is also preserved, and thus the scattering effect is improved. In addition, since the continuous bulges 40 have a tapering part, in which the width tapers regularly in the second direction Y, even when the thighs exert a force that compresses the diaper 100 in the transverse direction, the tapering parts are compressed, and thus, deformation is suppressed parts of the continuous bulges 40, which are not tapering parts. In addition, since the connected areas are located in the embossed areas E so that no tangent line of the connected areas intersects any other connected areas, bend points are also formed in the embossed areas E, and the bending of the composite sheet 10 in the embossed areas E is simplified. Accordingly , a bulge-like three-dimensional shape of continuous bulges 40 is more stably maintained. Thus, in the diaper 100 according to this embodiment, the effect of continuous bulges 40 that disperse moisture in the transverse direction is stably maintained during the wearing of the diaper, and therefore it is possible to obtain high wearing comfort and reduce the likelihood of getting wet, etc.

[0035]

Furthermore, as described above, the composite sheet 10 used according to this embodiment has discontinuous bulges 46 located in the embossed region, each of which is surrounded by an annular recess, in the embossed regions E. Thus, when the composite sheet 10 bends in the first direction X , continuous bumps 40 are supported, and the shape of the continuous bumps 40 is more reliably maintained.

In addition, the connected regions 31 and 32, which form the embossed regions E, are square or rectangular in a plan view, and thereby bending the composite sheet 10 in oblique directions that do not constitute a first X direction or a second Y direction, and the destruction of continuous bulges is suppressed 40.

[0036]

In order to ensure a balance of breathability and the ability to maintain the shape of continuous bulges, the length Ln in the first direction X of each unexpressed region N is preferably 20 to 100%, and more preferably 30 to 90%, the length Le, in the first direction X, each embossed region E. In addition, the length Ln, in the first direction X, of each unimpressed region N is preferably 1 mm or more, and more preferably 2 mm or more, and is preferably 10 mm or less, and more preferably 5 mm or less, i.e. amounts to sim ilar from 1 to 10 mm, and more preferably from 2 to 5 mm. At the same time, the length Le, in the first direction X, of each embossed region E is preferably 1 mm or more, and more preferably 2 mm or more, and is preferably 15 mm or less, and more preferably 10 mm or less, i.e. is preferably from 1 to 15 mm, and more preferably from 2 to 10 mm.

[0037]

In addition, the length L5, in the second Y direction, of the gap between the groups of connected regions 30 in each embossed region E is preferably from 20 to 100%, and more preferably from 30 to 90%, of the length Ln, in the first direction X, the embossed region E. In addition, the length L5 is preferably from 0.1 to 5 mm, and more preferably from 0.5 to 3 mm.

In addition, in order to increase the stability of the shape of the continuous convexities 40, the distance LP1 between the distal points P1 in the first direction X (which is the same as the length in the first direction X of each first convex 41) is preferably 120% or more, and more preferably 150% or more, and is preferably 300% or less, and more preferably 280% or less, for example, it is preferably 120 to 300%, and more preferably 150 to 280%, the distance LP2 between the proximal points P2 in the first direction X (which is such same ka length in the first direction X of each of the second protuberances 42).

In addition, the pitch of the far points P1 or the near points P2 in the second direction Y (which is the same as the distance between the centers of the tapering parts of the continuous convexities 40) is preferably from 20 to 200%, and more preferably from 40 to 150%, of the step of the embossed areas E or unstamped regions N in the first direction (which is the same as the distance in the first direction between the centers of the continuous convexities 40).

Further, the pitch of the far points P1 or the near points P2 in the second direction Y (which is the same as the distance between the centers of the tapering parts of the continuous convexities 40) is preferably 0.4 mm or more, and more preferably 2 mm or more, and is preferably 40 mm or less, and more preferably 20 mm or less, i.e., is preferably from 0.4 to 40 mm, and more preferably from 2 to 20 mm.

[0038]

Furthermore, the length L3, in the first direction X, of each first connected region 31 is preferably 0.1 mm or more, and more preferably 0.3 mm or more, and is preferably 10 mm or less, and more preferably 5 mm or less. For example, the length L3, in the first direction X, of each first connected region 31 is preferably from 0.1 to 10 mm, and more preferably from 0.5 to 5 mm. At the same time, the length L1, in the second direction Y, of each first connected region 31 is preferably 0.1 mm or more, and more preferably 0.5 mm or more, and is preferably 10 mm or less, and more preferably 5 mm or less . For example, the length L1, in the second direction Y, of each first connected region 31 is preferably from 0.1 to 10 mm, and more preferably from 0.5 to 5 mm.

[0039]

Furthermore, the length in the first direction X of each second connected region 32 is preferably 0.1 mm or more, and more preferably 0.5 mm or more, and is preferably 10 mm or less, and more preferably 5 mm or less. For example, the length L4 in the first direction X of each second connected region 32 is preferably from 0.1 to 10 mm, and more preferably from 0.5 to 5 mm. At the same time, the length L2 in the second Y direction of each second connected region 32 is preferably 0.1 mm or more, and more preferably 0.5 mm or more, and is preferably 10 mm or less, and more preferably 5 mm or less. For example, the length L2 in the second Y direction of each second connected region 32 is preferably from 0.1 to 10 mm, and more preferably from 0.5 to 5 mm.

[0040]

In addition, in the sets of second connected regions R2, each of the large intervals between the connected regions 32 in the second direction Y (which is the same as the length L1 of each first connected region in FIG. 6) is preferably one or more, and more preferably 1, 5-fold or more, and is preferably 10-fold or less, and more preferably 8-fold or less, i.e., preferably one-time to 10-fold, and more preferably 1.5-fold to 8-fold, relation to each of less all the intervals between the connected regions 32 (which is the same as the length L5 of each gap).

[0041]

In the composite sheet 10, as described above, the plurality of first connected regions R1, in which the first connected regions 31 are spaced along the second direction Y, and the plurality of second connected regions R2, in each of which the second connected regions 32 are spaced are formed along a second direction Y in each of the embossed regions E, and sets of second connected regions R2 are formed on both sides in a first direction X of a plurality of first connected regions R1. As illustrated in FIG. 4, a plurality of groups of connected regions 30, in each of which one first connected region 31 is surrounded by four second connected regions 32, are formed sequentially in the second direction Y in each of the embossed regions E.

In order to improve the ability to maintain the shape of continuous bulges 40, each set of first connected regions R1 in the composite sheet 10 has a percentage of connected regions (%), which is a proportion of the total length in the second direction Y of the first connected regions 31 with respect to the length in the second direction Y of the plurality of first connected regions R1, preferably from 10 to 80% and more preferably from 20 to 70%.

[0042]

The percentage of connected areas (%) is determined as follows.

In other words, in a top view of the composite sheet 10, which is viewed from the surface on the side of the second sheet, a straight line Lm parallel to the second direction Y is drawn in the embossed region E (see FIG. 4). The straight line Lm is drawn in such a way that it passes through the first connected regions 31, which are connected regions located centrally in the first direction in the embossed region E.

Then, as illustrated in FIG. 4, the length Lp (which is the same as L2 + L1 + L2 + L5 in FIG. 6) for one step in the second direction of the group of connected regions 30 is taken to be one unit, and a length corresponding to five units of the straight line Lm is measured. Parts (first joined regions 31) that are fused and hardened by embossing in a straight line for five units are visually confirmed and measured are the lengths of said parts (first joined regions 31) that overlap a straight line Lm, so that the proportion of the sum is calculated specified lengths relative to the total length for five units. If visual measurement is difficult, the measurement can be carried out, for example, by observation using a VHX-1000 microscope manufactured by Keyence, with a magnification of 20 to 100.

[0043]

In addition, each of the two sets of second connected regions R2, between which there are a plurality of first connected regions R1 in the composite sheet 10, has a percentage of connected regions (%), preferably from 10 to 80% and more preferably from 20 to 70%. The percentage of connected regions (%) of each of the plurality of second connected regions is a proportion of the total length in the second Y direction of the second connected regions 32 forming a plurality of second connected regions R2 with respect to the length in the second Y direction of the plurality of second connected regions R2 and is measured as described above by drawing a straight line parallel to the second direction such that the line passes through the second connected region 32.

[0044]

Although not illustrated, it is preferred that the absorbent member including an absorbent core, which includes one or a plurality of longitudinal grooves extending along the longitudinal direction of the article Xa, or one or a plurality of transverse grooves extending along the transverse direction of the product Ya, is used in the absorbent the product according to the present invention as an absorbent element so that it is contained in the upper sheet 12 formed from sheet 10. In addition, It is preferable to use an absorbent core in which a plurality of longitudinal grooves parallel to one another and a plurality of transverse grooves parallel to each other intersect in a lattice shape, and a plurality of liquid absorbent parts, each of which is surrounded by two longitudinal grooves and two transverse grooves, are formed in the directions lying in the plane. Longitudinal grooves or transverse grooves can be formed over the entire area of the absorbent core in a plan view, or they can be formed on a part of the absorbent core, for example, on a single part of the absorbent core, which is located on any of the front, back and crotch parts. However, it is preferable that the longitudinal grooves or transverse grooves are formed at least on the part of the absorbent core that overlaps the composite sheet 10. When the absorbent element, which is easily deformed, is used in combination, the destruction or deformation of continuous bulges 40 of the composite sheet is more reliably prevented. 10. It is preferable that the density of the absorbent liquid is higher than the density of the bottom of the transverse groove or longitudinal groove, put between the parts absorbing liquid. The structure of such an absorbent element and the manufacturing method of such an absorbent element are described, for example, in Japanese Patent Applications No. JP 2013-255558 A and No. JP 2013-255567 A, etc. In addition, such an absorbent element can be used so that the longitudinal grooves or the transverse grooves are facing any sheet of top sheet and bottom sheet.

[0045]

Next, a preferred method for manufacturing the composite sheet 10 according to this embodiment will be described with reference to FIG. 10-14. As illustrated in FIG. 10, the manufacturing method of the composite sheet 10 includes a molding step in which the first sheet 1 is irregularly shaped by passing the first sheet 1 into the engaging portion between the first roller 111, whose peripheral surface is irregular in shape, and the second roller 112, in which the peripheral surface has an irregular shape, such that it engages with a first roller having an uneven shape during rotation of the first roller 111 and the second roller 112 in opposite directions with respect to each other. In addition, a method of manufacturing a composite sheet 10 includes a joining step after a molding step. In the joining step, after the first sheet 1 is moved away from the engaging portion while holding the first sheet 1 along the peripheral surface of the first roller 111 in an existing state, the second sheet 2 comes in such a way that it overlays the first sheet 1 and both sheets 1 and 2 are partially joined to each other by compression between the protuberances of the first roller 111 and the first heated roller 113 and between the convexities of the first roller 111 and the second heated roller 114 during heating.

[0046]

As illustrated in FIG. 10, the second roller 112, the first heated roller 113 and the second heated roller 114 are positioned so that they face the peripheral surface of the first roller 111. The second roller 112, the first heated roller 113 and the second heated roller 114 are located in this sequence from the above upstream of the side to the downstream side in the direction of rotation R of the first roller 111. A detailed description of the first roller 111 and the second roller 112, in which the peripheral surfaces are irregular in shape, will be dstavleny below. Each of the first heated roller 113 and the second heated roller 114 is a support roller, in which the peripheral surface is flat and does not contain recesses and bulges.

[0047]

First, the first sheet 1 is unwound from a roll of fabric (not illustrated in the drawing) for the first sheet 1. Separately, the second sheet 2 is unwound from a roll of fabric (not illustrated in the drawing) for the second sheet 2. After this, the unwound first sheet 1 is clamped in the engaging part between the first a roller 111 and a second roller 112, as illustrated in FIG. 10, so that the first sheet 1 is irregularly shaped. In this case, air is sucked into the first roller 111 from the peripheral surface of the first roller 111, so that it is easier to give the first sheet 1 an uneven shape. The suction mechanism for the first roller 111 will be described below.

[0048]

Further, as illustrated in FIG. 10, while the first sheet 1 is still held on the peripheral surface of the first roller 111 by suction, so that it remains in a state of formation, the second sheet 2 is superimposed on the first sheet 1, and a multilayer material formed from the first sheet 1 and the second sheet 2, is compressed between the first roller 111 and the first heated roller 113, in which the peripheral surface is flat. In this case, simultaneously the first roller 111 and the first heated roller 113 or only the first heated roller 113 are heated to a predetermined temperature. Accordingly, the first sheet 1 and the second sheet 2, which are located on the bulges of the first roller 111, that is, on the ridges of the teeth of each gear (see Fig. 11), as will be described below, are joined to each other during fusion bonding, and connected areas 31 and 32.

[0049]

After that, while the multilayer material that is formed from the first sheet 1 and the second sheet 2 joined to each other during fusion bonding is still held on the peripheral surface of the first roller 111 by suction, the multilayer material moves and contracts between the first a roller 111 and a second heated roller 114, in which the peripheral surface is flat. In this case, the first roller 111 and the second heated roller 114 at the same time or only the second heated roller 114 is heated to a predetermined temperature. Accordingly, since the materials of the first sheet 1 and the second sheet 2, for example, thermoplastic polymers are melted in the connected regions 31 and 32 located on the bulges of the first roller 111, that is, on the teeth of each gear, the connected regions 31 and 32 are formed more reliably. In this way, a predetermined composite sheet 10 is continuously produced.

[0050]

FIG. 11 is an exploded perspective view of a portion of the first roller 111 illustrated in FIG. 10. The first roller 111 includes a plurality of first gears 121, a plurality of second gears 122 and a plurality of gaskets 123, which are combined and mounted concentrically on the axis 124 so that they are integrated into the shape of the roller. The arrangement of said gears 121 and 122 and gaskets 123 will be described below. The gear 121 and the gasket 123 have the same width (the width of the teeth), and the gear 122 has a width (the width of the teeth), which is almost the double width of the gear 121 and the gasket 123. Holes are formed in the central parts of the two types of gears 121 and 122 and gaskets 123, and a rotation shaft (not illustrated in the drawing) is inserted into these holes. Cutouts (not illustrated in the drawing) are formed in each of the two types of gears 121 and 122 and gaskets 123, and a key (not illustrated in the drawing) is inserted into these cutouts. Accordingly, idling of two types of gears 121 and 122 and gaskets 123 is prevented.

[0051]

The gasket 123 is formed into a shape including beams 125, which are a plurality of protrusions extending radially from the center. The beams 125 of the gasket 123 have the same length. When the diameter of the circle that is virtually formed by connecting the ends of the respective beams 125 is determined as the diameter of the outer circle for convenience, the diameter of the outer circle is less than the diameter of the root circle of each of the first gear 121 and the second gear 122.

[0052]

A plurality of holes 126 and 127 are formed in the gears 121 and 122 in such a way that they surround the holes that are formed at the centers of the gears and into which the rotating shaft is inserted (not illustrated). The holes 126 and 127 have the same diameter, and each of the holes 126 and 127 is formed in a position that is at an equal distance from the center of each gear. The angle that is formed by adjacent holes 126 and the center of the gear, and the angle that is formed by neighboring holes 127 and the center of the gear, are equal to each other. The number of holes 126 of the gear 121 and the number of holes 127 of the gear 122 are equal to the number of beams 125 of the gasket 123. In addition, when the corresponding gears 121 and 122 and the gaskets 123 are assembled, the corresponding gears 121 and 122 and the gaskets 123 are arranged so that each of the holes 126 and 127 is located between adjacent beams 125 of the strip 123. Thus, each of the holes 126 and 127 is located in a practically V-shaped region, which is formed by two adjacent beams 125 and the center of the strip 123. At the same time, the entire area of each of the holes 126 and 12 7 is included in the substantially V-shaped region of FIG. 11. However, instead, only a portion of each of the openings 126 and 127 can be included in a substantially V-shaped region. This practically V-shaped part corresponds to each of the recesses of the first roller 111, in which the peripheral surface has an uneven shape. At the same time, the protuberances of the uneven peripheral surface of the first roller 111 correspond to the ends and roots of the teeth of the corresponding gears 121 and 122.

[0053]

When the corresponding gears 121 and 122 and gaskets 123 are assembled, as described above, the openings 126 of the first gears 121 and the openings 127 of the second gears 122 are aligned in the axial direction of the first roller 111, so that a plurality of suction channels (not illustrated), which pass in the axial direction, are formed in the first roller 111. Suction channels are connected to a suction device mounted outside of the roller 111, and air can be sucked into the first roller 111 from a recess formed at the periphery second surface of the first roller 111 when the suction device is operating.

[0054]

FIG. 12 illustrates a state in which the peripheral surface of the first roller 111 is flattened. In FIG. 12, the direction indicated by arrow U represents the direction of rotation of the first roller 111, and the direction indicated by arrow V represents the axial direction of the first roller 111. In addition, in FIG. 12, the rectangular regions represented by small dots are tooth ridges of the respective gears 121 and 122. As illustrated in FIG. 12, the first roller 111 has an integrated structure in which four elements, that is, the first gear 121, the second gear 122, the first gear 121 and the gasket 123, are integrated in this sequence and form one cycle T1, wherein said cycle T1 is repeated.

[0055]

In FIG. 12, the tooth ridges represented by small dots are planned positions for forming the connected regions 31 and 32 of the predetermined composite sheet 10. In particular, the tooth ridges in the case of the teeth 121a of the first gear 121 are planned positions for forming the second connected regions 32. In addition, the tooth ridges in the case of the teeth 122a of the second gear 122 are the plan positions for forming the first connected regions 31. The corresponding gears 121 and 122 and the gaskets 123 are appropriately positioned so that the aforementioned arrangement of the connected regions 31 and 32 is obtained, illustrated in FIG. four.

[0056]

In addition, in FIG. 12, the region 146A in the recess in the middle of the first roller is the planned position for molding the predetermined composite sheet 10 located in the embossed region of the convex 46, and the region 141A of the first depression of the first roller is the planned position for forming the first convex 41 of the predetermined composite sheet 10. In addition , the region 142A of the second recess of the first roller is a planned position for molding the second bulge 42 of the given composite sheet 10, and the region 143A of the third deep eniya the first roller is a planned position for forming a third predetermined convexity 43 of the composite sheet 10.

[0057]

FIG. 13 illustrates a state in which the peripheral surface of the second roller 112, in engagement with the first roller 111, is deployed on a plane. In FIG. 13, the direction indicated by arrow U represents the direction of rotation of the second roller 112, and the direction indicated by arrow V represents the axial direction of the second roller 112.

As illustrated in FIG. 13, the second roller 112 is formed from an integrated unit that includes third gears 124, fourth gears 28, and gaskets that are the same as gaskets 123 of the first roller 111. In FIG. 13, the rectangular areas represented by large dots are tooth ridges of gears 124 and 128. The second roller 112 may not include a suction mechanism. Accordingly, the holes 126 and 127 that are formed in the first gear 121 and the second gear 122 of the first roller 111 do not have to be formed in the gears of the second roller 112. In addition, in the second roller 112, the beams 125 need not be formed in the gaskets 123 .

[0058]

As illustrated in FIG. 13, the second roller 112 has an integrated structure in which four elements, that is, the third gear 124, the gasket 123, the fourth gear 128 and the gasket 123, are integrated in this sequence and form one cycle T2, wherein said cycle T2 is repeated. The total thickness of the four elements that form the cycle T2 is the same as the total thickness of the four elements that form the cycle T1 in the first roller 111.

[0059]

In FIG. 13, the protuberances 146B in the middle of the second roller and the second convexities 142B of the second roller are formed by the teeth 124a of the third gears 124. The protuberances 146B in the middle of the second roller and the second convexes 142B of the second roller are alternately arranged along the direction U. In addition, the first convexities 141B of the second roller are formed by the teeth 122a of the second gears. 122. When the first roller 111 and the second roller 112 mesh with each other, the first bulges 141B of the second roller mesh with the regions 141A of the first recess of the first roller. In addition, the second bulges 142B of the second roller are engaged with regions 142A of the second recesses of the first roller. In addition, the bulges 146B in the middle of the second roller are engaged with the middle recesses regions 146A of the first roller.

[0060]

FIG. 14 illustrates a state in which the protuberances of the second roller 112 engage with the peripheral surface of the first roller 111, which is deployed on a plane. In FIG. 14, the rectangular regions represented by small dots are the tooth crests of the gears 121 and 122 of the first roller 111. In addition, the rectangular regions represented by large dots are the tooth crests of the gears 124 and 128 of the second roller 112. As becomes apparent from FIG. 14, the first bulges 141B of the second roller engage with regions 141A of the first recesses of the first roller. The second bulges 142B of the second roller engage with regions 142A of the second recesses of the first roller. In addition, the middle bulges 146B of the second roller engage with regions 146A of the middle recesses of the first roller. On the other hand, the bulges of the second roller 112 do not mesh with the regions of the third recesses 143A of the first roller.

[0061]

In addition, as a result of the engagement of the first convexities 141B of the second roller with regions 141A of the first recesses of the first roller, the first sheet 1 (not illustrated) is pushed into the first roller 111 and a three-dimensional shape corresponding to the first convexes 41 is formed. In addition, as a result of the engagement the second bulges 142B of the second roller with regions 142A of the second recesses of the first roller, the first sheet 1 (not illustrated) is pushed into the first roller 111 and a three-dimensional shape corresponding to the second bulges 42 is formed. as a result of the engagement of the middle bulges 146B of the second roller with the regions 146A of the middle recesses with the first roller, the first sheet 1 (not illustrated) is pushed into the first roller 111, and a three-dimensional shape corresponding to the protrusions of the embossed regions 46 is formed. At the same time, in the regions 143A of the third recesses in the first roller, the first sheet 1 (not illustrated) is sucked into the region of the third recesses 143A due to air being drawn into the first roller 111 from the regions of the third recesses 143A, and a three-dimensional shape is formed. After this, the second sheet 2 is attached to the first sheet 1, which is given a three-dimensional shape, so that the desired composite sheet 10 is obtained.

[0062]

The composite sheet 10, which is obtained in this way, is introduced into the production line by the diaper 100 and is used to form the top sheet 12 of the disposable diaper 100 in a known manner.

[0063]

The present invention has been described above based on a corresponding preferred embodiment, but the present invention is not limited to this embodiment. For example, the composite sheet that is used as the top sheet in the absorbent article of the present invention may be the composite sheet 10J illustrated in FIG. fifteen.

The composite sheet 10J illustrated in FIG. 15 differs from the composite sheet 10 illustrated in FIG. 4, in that the second connected regions 32 are formed at constant intervals in the first direction X, located in the embossed convex region 46 are substantially circular in plan view, the height and area are more than in the case of the convexities 46 located in the embossed region in the composite sheet 10, illustrated in FIG. 4, each first connected region 31 is divided into two connected regions, the shape and size in a plan view of the first bulges 41 and the second bulges 42 forming continuous bulges 40 are different from the bulges in the composite sheet 10 illustrated in FIG. 4, etc. On the other hand, the composite sheet 10J illustrated in FIG. 15 is similar to the composite sheet 10 illustrated in FIG. 4, in that the un embossed regions N containing no connected regions throughout the entire second direction Y and the embossed regions E containing connected regions arranged in a regular manner throughout the second direction Y are alternately formed in the first direction X, the contouring convex lines Lt formed by joining, with straight lines, the ends of which are closest to the un embossed region N, the connected regions in corresponding parts in the second direction Y of the two embossed regions E, between which a region nevytisnennaya N, present in the form of broken lines in which distant points P1 and near the point P2, located at different distances from the field nevytisnennoy, N are repeated in the second direction Y, as illustrated in FIG. 16, a plurality of continuous bulges 40A continuously extending in the second Y direction are formed at constant intervals in the first X direction, parts formed from second bulges 42 in each of the continuous bulges 40A are regularly narrowed along the second Y direction, and not a single tangent line the connected regions 31 and 32 forming the embossed regions E in the composite sheet 10 extending in the first direction X and in the second direction Y, do not intersect any other connected region forming the embossed regions E, as roillyustrirovano FIG. 17, etc.

Thus, for example, in the case of the disposable diaper according to another embodiment of the present invention, in which the composite sheet 10J is used as the top sheet of the disposable diaper 100 described above so that the first direction X corresponds to the longitudinal direction of the article Xa, effects similar to those are achieved in the case where the composite sheet 10 illustrated in FIG. 4, is used as the top sheet.

[0064]

It is preferable that the disposable diaper 100 according to an embodiment of the present invention includes a flexible area BM, in which a plurality of elastic elements 19 are located at least in the center in the transverse direction of the rear part B, as in the case of the disposable diaper 100A illustrated in FIG. . eighteen.

Locking tapes 17 in the disposable diaper 100A illustrated in FIG. 18, in each case, are formed from a tape base material 17a, and a male Velcro type mechanical fastener element that attaches to the tape main material 17a to form a connecting portion 17c, and a fixation zone 18 is formed by attaching a female Velcro type mechanical fastener female element and an easily connected non-woven webs to the bottom sheet 13. A portion of the tape base material 17a of the fixing tape 17 forms a fixing part 17b that is fixed between the bottom sheet 13 and Volume 15, protects against leakage cuffs. The plurality of filamentous or fibrous elastic members 19 that compress the diaper 100A in the transverse direction Ya are spaced in the longitudinal direction Xa of the diaper 100A between the left and right retaining bands 17. It is preferred that the plurality of elastic members 19 are arranged as the elastic sheet 19s fixed between two sheets of nonwoven fabric or are placed in a double folded nonwoven fabric, and the ends of the elastic sheet 19s or the ends of the elastic elements 19, which are included in the elastic Art. 19s overlap the fixing parts 17b. In addition, it is preferable that the plurality of elastic members 19 are spaced at constant intervals in the longitudinal direction of the article Xa. The connecting parts 17c of the fixing tapes 17 may also be adhesive parts or similar parts formed by applying a binder to the tape base materials 17a. As the tape base materials 17a, known materials of various types, such as a nonwoven fabric, can be used.

[0065]

The top sheet 12 of the disposable diaper 100A, which is illustrated in FIG. 18 is formed from the above-described composite sheet 10 or the above-described composite sheet 10J.

Preferably, in the composite sheets 10 and 10J, the plurality of continuous protuberances 40 and 40A described above are formed so that they extend in a second direction Y in the region of the elastic elements BM. Preferably, when the width of each continuous bulge is taken equal to P1, the spacing between the elastic elements 19 is taken equal to P2, and the interval between the centers of the continuous bulges is taken equal to P3, as illustrated in FIG. 19, the relation P1 <P2 <P3 is satisfied. The width P1 of each continuous convexity is the distance LP2 between the proximal points P2 in the first direction X, and is also the same as the length Ln, in the first direction X, of each un-embossed region N described above. Although FIG. 19 illustrates the case in which the composite sheet forming the top sheet 12 is a composite sheet 10, the same condition applies to the case in which the composite sheet forming the top sheet 12 is a composite sheet 10J.

[0066]

Many elastic elements 19 are intended to improve the fit of the rear part B by compressing the diaper in the transverse direction. However, if the continuous bulges 40 and 40A of the composite sheets 10 and 10J forming the top sheet 12, which are arranged to overlap the area of the elastic elements BM in which the plurality of elastic elements 19 are located, and the elastic elements 19 satisfy the above relationship, the shape of the continuous bulges 40 and 40A is easily retained by means of the elastic elements 19 even when the rear part B of the diaper 100, in particular its part extending from the absorbent element 14 towards the rear end Is compressed in the second direction Y along the transverse direction of the article Ya. Accordingly, the effect of preventing getting wet at the rear of B is improved, and the effect of preventing leakage of liquid from the rear of B is also improved.

Furthermore, since the continuous protuberances 40 and 40A described above have small width parts that are regularly arranged in the second direction Y, the compression of the continuous protuberances 40 and 40A can become regular, and the effect of preventing getting wet in the rear portion B is improved. In addition, a fiber density gradient appears in the continuous bulges 40 and 40A, and the liquid absorption properties and the leakage prevention effect are improved.

[0067]

The absorbent article of the present invention may be a stretchable disposable diaper instead of an open type disposable diaper, or it may be a sanitary napkin, an incontinence pad, a panty liner or the like

[0068]

With respect to the above embodiments, the present invention further describes the following absorbent article.

<1>

An absorbent article comprising a top sheet, a bottom sheet and an absorbent element located between the top sheet and the bottom sheet,

wherein the top sheet comprises a composite sheet having a first direction and a second direction that is perpendicular to the first direction, and the first direction corresponds to a longitudinal direction of the product extending along the anteroposterior direction of the user when the user is wearing an absorbent product,

the composite sheet contains a first sheet and a second sheet that are laminated, a plurality of connected areas are formed as a result of partial joining of the first sheet and the second sheet to each other by embossing, and the first sheet, in its parts excluding the connected areas, acts so that it located at a distance from the second sheet and forms a number of bulges protruding towards the skin of the user,

the composite sheet contains: unprinted areas that extend in the second direction, and on which there are no connected areas throughout the entire second direction; and embossed areas that extend in the second direction, in which there are connected areas arranged in a regular manner, wherein unprinted areas and embossed areas are alternately formed in the first direction,

embossed areas include a first embossed area and a second area between which an un embossed area is located,

when, in each of the first embossed area and the second area, a contour-forming convex line is formed by rectilinearly connecting the midpoints of the ends that are closest to the un-embossed area, the connected areas located in the second direction, the contour-forming convex line is a broken line in which the far points and the nearest points located at different distances from the unprinted area are repeated in the second direction,

unexpressed areas include, as a bulge, a continuous bulge continuously passing in a second direction,

the continuous bulge has a tapering portion, the width of which is regularly tapering in the second direction, and

the tangent lines of the connected area forming the embossed area and extending in the first direction and in the second direction do not intersect any other connected areas forming the embossed area.

[0069]

<2>

The absorbent article of claim <1>, wherein the composite sheet has, within the embossed region, an intermittent bulge located in the embossed region surrounded by an annular recess.

<3>

The absorbent article of claim <1> or <2>, wherein the length, in the first direction, of the un embossed region is from 20 to 100% of the length, in the first direction, of the embossed region.

<4>

The absorbent article of claim <3>, wherein the length, in the first direction, of the un embossed region is from 30 to 90% of the length, in the first direction, of the embossed region.

<5>

An absorbent article according to any one of the preceding claims. <1> - <4>, in which the connected areas forming the embossed areas are in each case square or rectangular in a plan view.

[0070]

<6>

An absorbent article according to any one of the preceding claims. <1> - <4>, in which a plurality of first connected regions, in which the first connected regions are spaced along the second direction Y, and a plurality of second connected regions, in each of which the second connected regions are spaced along the second the Y directions are formed in each of the embossed regions, and the plurality of second connected regions are formed on both sides, in the first direction, the plurality of first connected regions.

<7>

The absorbent article of claim <6>, wherein a plurality of groups of connected regions, in each of which one first connected region is surrounded by four second connected regions, is formed sequentially in the second direction in each of the embossed regions.

<8>

The absorbent article according to <6> or <7>, wherein the plurality of first connected regions has a percentage of connected regions, which is a proportion of the total length, in the second direction Y, of the first connected regions with respect to length, in the second direction Y, a plurality of first connected regions comprising from 10 to 80%.

<9>

An absorbent article according to any one of the preceding claims. <1> - <6>, in which at least any of the grooves extending along the longitudinal direction of the product and grooves extending along the transverse direction of the product are formed in the absorbent element.

<10>

An absorbent article according to any one of the preceding claims. <1> - <9>, in which the continuous bulges have, on their reverse side, continuous hollow parts continuously passing in the second direction.

[0071]

<11>

An absorbent article according to any one of the preceding claims. <1> - <10>, in which the surface, which is located on the side of the second sheet 2, of the composite sheet is almost flat.

<12>

An absorbent article according to any one of the preceding claims. <1> - <11>,

in which continuous bulges in each case are formed by combining the first bulges and second bulges,

all of the first bulges and second bulges are elliptic in a plan view, and

the major axis of each of the elliptical first bulges corresponds to the first direction, and the major axis of each of the elliptical second bulges corresponds to the second direction.

<13>

An absorbent article according to any one of the preceding claims. <1> - <12>, in which the first sheet and the second sheet are compressed as a whole by embossing in the connected areas, so that the first sheet and the second sheet simultaneously have a higher density in the connected areas than in any other parts .

<14>

An absorbent article according to any one of <6> to <13>, wherein the first connected regions and the second connected regions are in different positions in the second direction, and the first connected regions and the second connected regions have different lengths along the second direction.

<15>

An absorbent article according to any one of paragraphs <6> to <14>, wherein the rectangular first connected regions have long sides corresponding to the second Y direction and are spaced along the intervals along the second Y direction such that a plurality of first connected regions are formed passing along the second direction.

[0072]

<16>

An absorbent article according to any one of paragraphs <6> to <15>, wherein the rectangular second connected regions have short sides corresponding to the second Y direction and are spaced along the intervals along the second Y direction such that a plurality of second connected regions are formed passing along the second direction.

<17>

An absorbent article according to any one of paragraphs <6> to <16>, wherein, in each of the sets of first connected areas, the intervals between the first connected areas in the second direction Y are constant, and, in each of the sets of second connected areas, the intervals between the second connected regions in the second direction Y are of two types, where the intervals of greater length and the intervals of shorter length are arranged alternately.

<18>

An absorbent article according to any one of paragraphs <6> to <16>, in which, in each of the sets of first connected regions R1, the positions of the first connected regions when viewed in the second direction Y are the same, and in each of the sets of second connected regions R2 , the positions of the second connected regions when observed in the second direction Y are the same.

<19>

An absorbent article according to any one of the preceding claims. <1> - <18>,

in which continuous bulges in each case are formed by combining the first bulges and second bulges,

the first convexity of the continuous convexity is formed between the far points P1 of a pair of contour-forming convex lines that are facing each other, with an un embossed area located between them,

a second convexity of continuous convexities is formed between the proximal points P2 of a pair of contour-forming convex lines that face each other, with an un embossed region located between them, and

the length in the direction along the first X direction of the second bulge 42 is less than the length in the direction along the first X direction of the first bulge.

<20>

The absorbent product according to any one of paragraphs. <2> - <19>,

in which the composite sheet has, within the embossed region, an intermittent bulge located in the embossed region, surrounded by an annular recess, and

a bulge located in the embossed region is formed in a shape that has a vertex in both cross sections drawn along the first direction X and the second direction Y.

[0073]

<21>

The absorbent product according to any one of paragraphs. <2> - <20>,

in which continuous bulges in each case are formed by combining the first bulges and second bulges,

a plurality of bulges located in the embossed region is arranged in a row in a straight line at constant intervals along the second direction Y and forms a plurality of bulges located in the embossed region,

the plurality of second bulges are arranged in a row in the form of a straight line with constant intervals along the second direction Y and form the plurality of second bulges, and

the bulges located in the embossed region and the second bulges are formed in the same position in the second direction Y.

<22>

An absorbent article according to any one of the preceding claims. <1> - <21>,

in which continuous bulges in each case are formed by combining the first bulges and second bulges,

a third bulge is formed between the bulge located in the extruded region and the second bulge, and

the second bulge, the third bulge located in the embossed region, the bulge and the third bulge are arranged in this sequence regularly and in the form of a straight line along the first direction X.

<23>

An absorbent article according to any one of the preceding claims. <1> - <22>,

in which the first bulges, the second bulges, the third bulges and located in the embossed region of the bulges are formed in the first sheet forming the composite sheet, and

the third bulges have a lower height than any of the first bulges, the second bulges and located in the embossed region of the bulges 46.

<24>

An absorbent article according to any one of the preceding claims. <1> - <23>, in which, when the height of each of the first bulges is taken to be H1, the height of each of the second bulges is taken to be H2, the height of each of the third bulges is taken to be H3, and the height of each of the bulges located in the embossed region is taken to be H4, the following relations (1) and (2) or (1) - (3) are satisfied:

(1) H1≥H2;

(2) H1> H4, H2≥H4; and

(3) H4≥H3.

<25>

An absorbent article according to any one of the preceding claims. <1> - <24>, in which the length Ln, in the first direction, of the unprinted area is preferably 1 mm or more, and more preferably 2 mm or more, and is preferably 10 mm or less, and more preferably 5 mm or less.

[0074]

<26>

An absorbent article according to any one of the preceding claims. <1> - <25> in which the length of Le, in the first direction Y, of the embossed regions is preferably 1 mm or more, and more preferably 2 mm or more, and is preferably 15 mm or less, and more preferably 10 mm or less.

<27>

An absorbent article according to any one of the preceding claims. <1> - <26>, in which the length L5, in the second Y direction, of the gap between the groups of connected regions in the embossed region is from 20 to 100%, and more preferably from 30 to 90%, of the length Ln, in the first X direction, embossed area E.

<28>

An absorbent article according to any one of the preceding claims. <1> - <27> in which the distance LP1 between the distal points P1 in the first direction X (which is the same as the length in the first direction X of each first convex 41) is preferably 120% or more, and more preferably 150% or more , and is preferably 300% or less, and more preferably 280% or less, of the distance LP2 between the proximal points P2 in the first direction X (which is the same as the length in the first direction X of each second bulge 42).

<29>

An absorbent article according to any one of the preceding claims. <1> - <28>, in which the step of the far points P1 or the near points P2 in the second direction Y (which is the same as the distance between the centers of the tapering parts of the continuous convexities 40) is preferably 0.4 mm or more, and more preferably 2 mm or more, and is preferably 40 mm or less, and more preferably 20 mm or less.

<30>

An absorbent article according to any one of the preceding claims. <1> - <29>, in which the length L3, in the first direction X, of the first connected regions is preferably 0.1 mm or more, and more preferably 0.3 mm or more, and is preferably 10 mm or less, and more preferably 5 mm or less, and a length L1, in the second direction Y, of the first connected regions 31 is preferably 0.1 mm or more, and more preferably 0.5 mm or more, and is preferably 10 mm or less, and more preferably 5 mm or less.

[0075]

<31>

An absorbent article according to any one of the preceding claims. <1> - <30>, in which the length, in the first direction X, of the second connected region is preferably 0.1 mm or more, and more preferably 0.5 mm or more, and is preferably 10 mm or less, and more preferably 5 mm or less, and a length L2, in the second direction Y, of the second connected region is preferably 0.1 mm or more, and more preferably 0.5 mm or more, and is preferably 10 mm or less, and more preferably 5 mm or less.

<32>

An absorbent article according to any one of the preceding claims. <1> - <31>, in which, in the sets of the second connected regions R2, the larger spacing between the connected regions 32 in the second direction Y (which is the same as the length L1 of each first connected region in FIG. 6) is preferably a single or more, and more preferably 1.5 times or more, and is preferably 10 times or less, and more preferably 8 times or less, a smaller interval between the connected regions 32 (which is the same as the length L5 of each gap).

[0076]

<33>

An absorbent article according to any one of the preceding claims. <1> - <32>, which is used as a disposable diaper, which includes a front part that is worn on the front side of the user when the user wears the diaper, a back part that is worn on the back side of the user when the user wears the diaper, and the crotch part located between the front and rear,

in which, at least in the center in the transverse direction of the rear, a plurality of elastic elements that compress the disposable diaper in the transverse direction are spaced in the longitudinal direction of the disposable diaper,

a plurality of continuous bulges extending in the second direction are formed in the region of the elastic elements in which the plurality of elastic elements are located, and

when the width of each of the continuous bulges is taken equal to P1, the interval between the elastic elements is taken to be P2, and the interval between the centers of the continuous bulges is taken to be P3, the relation P1 <P2 <P3 is satisfied.

Industrial applicability

[0077]

In the absorbent article according to the present invention, the effect of moisture dispersion in the transverse direction of the article by the top sheet is appropriately maintained, and the occurrence of wetting is unbelievable even when the absorbent article is deformed during wearing.

Claims (63)

1. An absorbent article comprising a top sheet, a bottom sheet and an absorbent element located between the top sheet and the bottom sheet, wherein the top sheet comprises a composite sheet having a first direction and a second direction that is perpendicular to the first direction, and the first direction corresponds to a longitudinal direction of the product extending along the anteroposterior direction of the user when the user is wearing an absorbent product, the composite sheet contains a first sheet and a second sheet that are laminated, a plurality of connected areas are formed by partial joining of the first sheet and the second sheet to each other by embossing, and the first sheet in its parts excluding the connected areas, acts so that it is at a distance from the second sheet and forms many bulges protruding towards the skin of the user, the composite sheet contains: unprinted areas that extend in the second direction and on which there are no connected areas throughout the entire second direction; and embossed areas that extend in the second direction, in which there are connected areas arranged in a regular manner, wherein unprinted areas and embossed areas are alternately formed in the first direction, embossed areas include a first embossed area and a second area between which an un embossed area is located, when a contour-forming convex line is formed in each of the first embossed area and the second area by rectilinearly connecting the midpoints of the ends that are closest to the un-embossed area, the connected areas located in the second direction, the contour-forming convex line is a broken line in which the far and near points points located at different distances from the unprinted area are repeated in the second direction, non-embossed areas include, as a bulge, a continuous bulge continuously passing in a second direction, a continuous bulge has a tapering part, the width of which is regularly tapering in the second direction, and is formed by connecting the first bulges and second bulges, all of the first bulges and second bulges are elliptic in a plan view, the major axis of each of the elliptical first bulges corresponds to the first direction, and the major axis of each of the elliptical first bulges corresponds to the second direction, and the tangent lines of the connected area forming the embossed area and extending in the first direction and in the second direction do not intersect any other connected areas forming the embossed area. 2. The absorbent product according to claim 1, wherein the composite sheet has an intermittent bulge located in the extruded region within the embossed region, surrounded by an annular recess. 3. The absorbent product according to claim 1, wherein the length, in the first direction, of the un embossed region is from 20 to 100% of the length, in the first direction, of the embossed region. 4. The absorbent product according to claim 3, in which the length, in the first direction, of the un embossed region is from 30 to 90% of the length, in the first direction, of the embossed region. 5. The absorbent article of claim 1, wherein the connected areas forming the embossed areas are in each case square or rectangular in plan view. 6. The absorbent article of claim 1, wherein the plurality of first connected regions, in which the first connected regions are spaced along the second direction, and the plurality of second connected regions, in each of which the second connected regions are spaced along the second directions are formed in each of the embossed areas, and a plurality of second connected areas are formed on both sides, in a first direction, a plurality of first connected areas. 7. The absorbent article of claim 6, wherein a plurality of groups of connected regions, in each of which one first connected region is surrounded by four second connected regions, is formed sequentially in a second direction in each of the embossed regions. 8. The absorbent article of claim 6, wherein the plurality of first connected regions has a percentage of connected regions that is a proportion of the total length, in the second direction, of the first connected regions with respect to the length, in the second direction, of the plurality of first connected regions, constituting from 10 to 80%. 9. The absorbent article of claim 1, wherein at least any of the grooves extending along the longitudinal direction of the article and grooves extending along the transverse direction of the article are formed in the absorbent element. 10. An absorbent product according to claim 1, in which the continuous bulges have, on their reverse side, continuous hollow parts continuously passing in the second direction. 11. The absorbent product according to claim 1, in which the surface, which is located on the side of the second sheet, of the composite sheet is almost flat. 12. The absorbent product according to claim 1, in which the first sheet and the second sheet are compressed as a whole by embossing in the connected areas so that the first sheet and the second sheet simultaneously have a higher density in the connected areas than in any other parts . 13. The absorbent article of claim 6, wherein the first connected regions and second connected regions are in different positions in the second direction, and the first connected regions and second connected regions have different lengths along the second direction. 14. The absorbent product according to claim 6, in which the rectangular first connected regions have long sides corresponding to the second direction and are arranged in a row at intervals along the second direction such that a plurality of first connected regions are formed extending along the second direction. 15. The absorbent product according to claim 6, in which the rectangular second connected regions have short sides corresponding to the second direction, and are arranged at intervals at intervals along the second direction so that a plurality of second connected regions are formed extending along the second direction. 16. The absorbent product according to claim 6, in which in the sets of the first connected areas, the intervals between the first connected areas in the second direction are constant, and in the sets of the second connected areas, the intervals between the second connected areas in the second direction are two types, where the intervals are longer and shorter lengths are arranged alternately. 17. The absorbent product according to claim 6, in which in each of the sets of first connected areas, the positions of the first connected areas when viewed in the second direction are the same, and in each of the sets of second connected areas, the positions of the second connected areas when observed in the second direction are the same. 18. The absorbent product according to claim 1, in which continuous bulges in each case are formed by combining the first bulges and second bulges, the first convexity of the continuous convexity is formed between the farthest points of the pair of contour-forming convex lines that are facing each other, with an unbroken area located between them, a second convexity of continuous convexities is formed between the proximal points of a pair of contour-forming convex lines that face each other, with an unbroken region located between them, and the length in the direction along the first direction of the second bulge is less than the length in the direction along the first direction of the first bulge. 19. The absorbent product according to claim 2, in which the composite sheet has an intermittent bulge located in the extruded region within the embossed region, surrounded by an annular recess, and a bulge located in the embossed region is formed in a shape that has a vertex in both cross sections drawn along the first direction and the second direction. 20. The absorbent product according to claim 2, in which continuous bulges in each case are formed by combining the first bulges and second bulges, a plurality of bulges located in the embossed region is arranged in a row in the form of a straight line with constant intervals along the second direction and forms a plurality of bulges located in the embossed region, the plurality of second bulges are arranged in a row in the form of a straight line with constant intervals along the second direction and form the plurality of second bulges, and the bulges located in the embossed region and the second bulges are formed in the same position in the second direction. 21. The absorbent product according to claim 2, in which continuous bulges in each case are formed by combining the first bulges and second bulges, a third bulge is formed between the bulge located in the extruded region and the second bulge, and the second bulge, the third bulge located in the embossed region, the bulge and the third bulge are arranged in this sequence regularly and in the form of a straight line along the first direction. 22. The absorbent product according to p. 21, in which the first bulges, the second bulges, the third bulges and located in the embossed region of the bulges are formed in the first sheet forming the composite sheet, and the third bulges have a lower height than any of the first bulges, the second bulges and located in the embossed region of the bulges. 23. The absorbent article according to claim 22, wherein when the height of each of the first bulges is taken to be H1, the height of each of the second bulges is taken to be H2, the height of each of the third bulges is taken to be H3, and the height of each of the bulges located in the embossed region is taken to be H4, the following relations (1) and (2) or (1) - (3) are satisfied: (1) H1≥H2; (2) H1> H4, H2≥H4; and (3) H4≥H3. 24. The absorbent article of claim 1, wherein the length Ln, in the first direction, of the unimpressed region is from 1 to 10 mm. 25. An absorbent product according to claim 1, in which the length Le, in the first direction, of the embossed areas is from 1 to 15 mm. 26. An absorbent product according to claim 7, in which the length L5, in the second direction, of the gap between the groups of connected regions in the embossed region is from 20 to 100% of the length Ln, in the first direction, the embossed region. 27. An absorbent product according to claim 1, in which the distance LP1 between the distant points in the first direction is from 120 to 300% of the distance LP2 between the nearest points in the first direction. 28. An absorbent product according to claim 1, in which the step of the far points or near points in the second direction is from 0.4 to 40 mm 29. An absorbent product according to claim 6, in which the length L3, in the first direction, of the first connected regions is from 0.1 to 10 mm, and the length L1, in the second direction, of the first connected regions is from 0.1 to 10 mm. 30. An absorbent product according to claim 6, in which the length in the first direction of the second connected region is from 0.1 to 10 mm, and the length in the second direction of the second connected region is from 0.1 to 10 mm. 31. An absorbent product according to claim 6, in which in the sets of the second connected regions, a larger interval between the connected regions in the second direction is from 1 to 10 times a smaller interval between the connected regions. 32. An absorbent product according to claim 1, which is used as a disposable diaper, which includes a front part that is worn on the front side of the user when the user wears the diaper, a back part that is worn on the back side of the user when the user wears the diaper, and crotch a part located between the front and rear, in which, at least in the center in the transverse direction of the rear, a plurality of elastic elements that compress the disposable diaper in the transverse direction are spaced in the longitudinal direction of the disposable diaper, a plurality of continuous bulges extending in the second direction are formed in the region of the elastic elements in which the plurality of elastic elements are located, and when the width of each of the continuous bulges is taken equal to P1, the interval between the elastic elements is taken to be P2, and the interval between the centers of the continuous bulges is taken to be P3, the relation P1 <P2 <P3 is satisfied.

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