TW201642824A - Absorbent article, and manufacturing device and manufacturing method for same - Google Patents

Abstract

To provide an absorbent article having improved flexibility of an absorbent body. This absorbent article (10) is provided with a liquid-permeable front surface sheet (14), a liquid-impermeable back surface sheet (12), and an absorbent body (13) interposed between the front surface sheet (14) and the back surface sheet (12). In the absorbent body (13), multiple recessed sections (502) are formed on the surface on the front surface sheet (14) side. The multiple recessed sections (502) form multiple first patterns (501a) parallelly extending in a first direction and multiple second patterns (501b) parallelly extending in a second direction that intersects the first direction. The multiple first patterns (501a) and the multiple second patterns (501b) form multiple intersection regions (901, 902) where the first direction and the second direction intersect. The depth of each of the recessed sections (502) located at the intersection regions (901, 902) is smaller than the depth of each of the recessed sections (502) located at an intermediate region (903) between two adjacent intersection regions (901, 902).

Description

Absorbent article, manufacturing device thereof and manufacturing method thereof

The present invention relates to an absorbent article such as a disposable diaper or an absorbent pad, and a manufacturing apparatus and a manufacturing method thereof.

The absorbent article absorbs substantially all of the discharged body fluid by the absorbent body. Here, since the diaper covers the abdomen, the buttocks, and the thighs, it is affected by various activities such as walking or turning over, crawling of the baby, and the like, particularly the legs. In particular, the absorbent body is awkward, tortuous, or broken due to various activities of the body. As a result, the diaper has a reduced conformability to the day, and is liable to cause liquid leakage. Therefore, in order to maintain the conformability, for example, as shown in Patent Document 1, the embossing process is performed on the non-skin contact surface side of the absorbent body. By embossing the absorbent body, the rigidity of the absorbent body is enhanced, so that the absorbent body is less likely to be twisted and less likely to be broken due to the force exerted by the activity of the body.

Further, as seen in Patent Document 2 and Patent Document 3, the embossing is performed on the skin contact surface side of the absorbent body in an obliquely lattice-shaped compression groove extending obliquely from the front surface of the diaper to the back body piece. Processor.

On the other hand, in general, an absorption system used for an absorbent article absorbs and retains a liquid such as urine, and is mainly a mixture of a fluffy pulp and a superabsorbent polymer (hereinafter referred to as "SAP"). A core body and a core covering material such as a tissue coated with the absorbent core are formed.

For such absorbent articles, the demand for resources is reduced, the cost of logistics is reduced, and the storage efficiency of retail stores and the like is improved. The demand is called lightweight and small. Type, and it has gradually become mainstream. Such an ultra-thin absorbent article can be realized by reducing the weight of the absorbent body which occupies most of the weight and volume of the absorbent article and making it small. That is, the thinning of the absorber core body composed of a mixture of fluff pulp and SAP can be achieved by increasing the relative content of SAP or replacing the mixture and using a sheet-shaped SAP.

However, as the content of SAP in the absorbent body is increased, the flexibility of the absorbent body itself tends to be lost, and the softness of the absorbent body is impaired, which further causes an increase in discomfort during wearing of the absorbent article.

In view of this problem, it is also considered that the technique proposed in Patent Documents 1 to 3 is effective in forming a compression groove having an oblique lattice shape on the surface of the absorber, and following the twisting force applied to the absorber to cause the absorber to The portion of the compression groove is easily bent. The reason for this is that, by the constitution of the absorbent body of the patent documents, the flexibility of the absorbent body can be maintained, and the conformability to the wearer, that is, the compliance of the front and rear movements of the legs or the curvature of the buttocks can be improved, and the pair is improved. Wear the skin of the wearer's skin. Further, in Patent Documents 2 and 3, since the skin contact surface side is formed with a groove in an oblique lattice shape, the liquid diffusing property on the surface of the absorber is also enhanced. This also improves the utilization efficiency of the absorber, so that the cost can be expected to decrease.

The compression groove is formed by rotationally moving an embossing roll having a surface embossed pattern projection on the elongated absorbent sheet. When the diaper is produced, the embossing roll is embossed by rotating the long absorbent sheet or the like, and then the various sheets are laminated or the like to be cut into a desired size.

[Previous Technical Literature] [Patent Literature]

[Patent Document 1] Japanese Patent Laid-Open Publication No. 2014-69002

[Patent Document 2] Japanese Patent Laid-Open No. 2015-16218

[Patent Document 3] Japanese Patent Laid-Open Publication No. 2013-135824

However, the oblique lattice shape described in Patent Documents 1 to 3 causes the surface of the absorber to be tight at the intersection of the two compression grooves forming the lattice of the absorbent body during the embossing process, and has an absorbent body. The rupture. Further, in the intersection region, the factor material is more concentrated than the other portions of the surface of the absorber, so that the absorber becomes hard and the skin feels poor and the softness is impaired. The structures disclosed in Patent Documents 2 and 3 in which the grooves are disposed on the surface of the front surface of the absorbent body have an advantage of improving the diffusibility of the liquid on the surface of the absorbent body as compared with the configuration disclosed in Patent Document 1. The problem is even more pronounced.

Further, in the case where the compression groove is provided, it is important that the groove does not slack even if a pressure due to the weight of the wearer is applied. Therefore, the inventors of the present invention have experimentally produced a surface of the front sheet (top sheet) disposed on the side of the skin contact surface of the absorbent body, and the front sheet and the absorbent body are compressed together to form an absorbent groove which is less likely to be loosened. article. Also in this case, as described above, the compression groove is formed by rotating the embossing roll on the absorbent body in which the front sheet is laminated. When the compression groove is formed in this manner, the front sheet or the like which is located above the upper layer is caught in the groove by the pressing of the embossing roll, and the front sheet or the like is likely to be highly tight. In particular, the embossed pattern having a component extending in the oblique direction, such as an oblique lattice shape, has a portion in the vicinity of the lattice point or the like, and the distance between the places where the compression is performed is shortened (the interval is narrowed). When the distance between the places to be compressed at the same time becomes short, the force for stretching the front sheet from both adjacent compression points strongly acts, and it is easy to become a state in which the front sheet is highly tight.

Although the compression groove itself is located at a position lower than the uncompressed portion, it does not directly contact the wearer's skin, but the front sheet and the absorbent body are pulled near the intersection of the lattice (lattice point), that is, near the corner of the lattice. Stretched and fixed in a state of high tension. Therefore, since the SAP is in contact with the front sheet, the unevenness of the superabsorbent resin in the vicinity of the corner of the lattice contact surface of the front sheet is transmitted as a feeling of the hand, and is harder than other parts.

Further, since the corner of the lattice is located higher than the bottom of the compression groove (close to the wearer) The position of the skin is easy to contact with the wearer's skin, and the wearer gives the skin a hard or hard touch. Since the absorbent article is in contact with the delicate skin portion such as the daytime, it is particularly required to have a soft touch, so that the corner portion of the lattice is hard.

On the other hand, since the front sheet is a contact surface of the wearer's skin, it is a part that the wearer can easily observe when wearing. If the embossed pattern is less likely to feel regular or design, the aesthetic effect is low, and depending on the situation, there is a possibility that the wearer mistakenly believes that wrinkles or the like are caused by manufacturing defects.

It is an object of the present invention to provide an absorbent article which is based on the above problems and which aims to improve the softness or conformability of the absorbent body.

Another object of the present invention is to provide an absorbent article which is formed by compressing a front sheet and an absorbent body to form a visually beautiful embossed pattern having a component extending in an oblique direction, and even if inclined The vicinity of the intersection where the components of the direction extend intersect also impart a soft touch to the wearer.

An object of the present invention is to provide an absorbent article which is obtained by compressing a front sheet and an absorbent body to form an embossed pattern having a component extending in an oblique direction, and even a portion intersecting in a direction extending in an oblique direction It also gives the wearer a soft touch.

According to a first aspect of the invention, there is provided an absorbent article comprising: a liquid-permeable front sheet; a liquid-impermeable back sheet; and a surface disposed between the front sheet and the back sheet; The absorber has a thinned portion on a surface of the absorber on the side of the front sheet, and the thinned portion is formed in a group of first straight lines extending in parallel with the first direction, and a first direction a lattice defined by a group of second straight lines extending in parallel in the second direction intersecting, is disposed along a lattice line of the lattice, and has a depression more than a surface of the absorber on the side of the front sheet a portion; the thinned portion is provided with a boundary at an intersection including the intersection of the lattice lines and the periphery thereof.

The basic concept of the invention is manifested by this form. Thereby, an absorbent article in which the rigidity of the vicinity of the region where the plurality of thinned portions intersect is not easily increased, the flexibility of the absorbent body is improved, and the conformability is improved.

The basic concept of the present invention is developed in the following embodiments. which is:. The first embodiment in which the intersection region is compressed to have a depth from the surface of the front sheet side that is shallower than the recessed portion of the thinned portion; The intersecting region includes a region including a central portion of the intersection and a region outside thereof, and the outer region is compressed into a second embodiment in which the depth from the surface on the front sheet side is shallower than the recessed portion of the thinned portion and deeper than the central portion; . The intersecting region includes a third region including a central portion of the intersection and an outer lateral region thereof, and the central region is compressed to a depth deeper than the outer region from the surface of the front sheet side; The fourth embodiment in which the intersection region is an uncompressed region; In the fifth embodiment, the intersection region is pressed so that the depth from the surface on the front sheet side is shallower than the recessed portion of the thinned portion, and the raised portion is formed on the surface of the corresponding back sheet side of the absorbent body.

According to another aspect of the present invention, in a manufacturing apparatus, the absorbent article according to the fifth embodiment is provided, comprising: a first rotating member having a peripheral surface formed with a convex portion, and configured to The convex portion presses the side of the front sheet of the absorbent body, and the convex portion includes a first convex portion configured to form a first concave portion extending in the first direction on the side of the front sheet of the absorbent body, And a second convex portion configured to form a second concave portion extending in a second direction different from the first direction in a state of being intersected with the first concave portion; and The second rotating member has a peripheral surface portion on which the recessed portion is formed, and is configured to be held by the first rotating member to sandwich the absorber, and to abut against the back sheet side of the absorber, The depressed portion is disposed at a position corresponding to a region where the first convex portion and the second convex portion intersect.

Furthermore, another aspect of the present invention provides a method for producing a liquid-permeable front sheet, a liquid-impermeable back sheet, and a surface sheet disposed between the front sheet and the back sheet. In the absorbent article of the absorbent body, the first concave portion extending in the first direction and the intersecting state with respect to the first concave portion are formed on the front surface of the absorbent body. The second concave portion extending in the second direction different from the first direction is pressed against the front sheet side of the absorbent body; and the step of pressing is performed to intersect the first concave portion and the second concave portion In the region of the absorbent body, the embossed portion is formed on the back sheet side to deform the back sheet side of the absorbent body, and the manufacturing method is applied to the manufacturer of the absorbent article according to the fifth embodiment.

10‧‧‧Absorbables (diapers)

10C‧‧‧胯下区域区

10F‧‧‧Predecessor area

10L‧‧‧ leg opening

10J‧‧‧Closed Department

10R‧‧‧Back area

10W‧‧‧ Waist opening

11‧‧‧ Covering film

11A‧‧‧Gap section

11B‧‧‧Internal cover film

11C‧‧‧External Cover

12‧‧‧Back sheet

13‧‧‧Acceptor

14‧‧‧Front sheet

15‧‧‧Rubber line

17‧‧‧Rubber line

18‧‧‧Side sheet

19‧‧‧Rubber line

401‧‧‧ Thinning Department

402‧‧‧Deformation Restraint Department

403‧‧‧ contour

501‧‧‧ Thinning Department

501a‧‧‧1st pattern

501b‧‧‧2nd pattern

502‧‧‧ recess

601‧‧‧ contour

901‧‧‧Intersection

902‧‧‧Intersection

903‧‧‧Intermediate area

904‧‧‧Interlayer joint compression

905‧‧‧ contour

1001‧‧‧ Thinning Department

1002‧‧‧ recess

1101‧‧‧Central area

1102‧‧‧Central area

1103‧‧‧Outer area

1104‧‧‧Outer area

1105‧‧‧Intermediate area

1106‧‧‧Interlayer joint compression

1107‧‧‧ contour

1201‧‧‧ Thinning Department

1202‧‧‧ recess

1301‧‧‧Central Area

1302‧‧‧Central Area

1303‧‧‧Outer area

1304‧‧‧Outer area

1305‧‧‧Outer area

Section 1306‧‧‧

Section 1307‧‧‧

1308‧‧‧Interlayer joint compression

1309‧‧‧Interlayer joint compression

1310‧‧‧ contour

3013‧‧‧ absorber

3013A‧‧‧High Density Department

3013B‧‧‧Medium Density Department

3013C‧‧‧Density Change Department

3013D‧‧‧Low density department

3013a‧‧‧Gap section

3021‧‧ ‧ long recess

3021a‧‧‧Right long recess

3021b‧‧‧Left to the long recess

3022‧‧‧Compressed line

3022a‧‧‧1st compressed line

3022b‧‧‧2nd compression line

3023‧‧‧ Short recess

3024‧‧ ‧Quasi-compression zone

3025‧‧‧Main absorption area

3026‧‧‧near the intersection

3211‧‧‧The first part of the long recess

3212‧‧‧The second part of the long recess

4013‧‧‧Absorber

4013A‧‧‧High Density Department

4013B‧‧‧Medium Density Department

4013C‧‧‧Density Change Department

4013D‧‧‧Low density department

4013a‧‧‧Gap section

4021‧‧‧ recess

4021a‧‧‧Right recess

4021b‧‧‧Left to the recess

4022‧‧‧Compressed line

4022a‧‧‧1st compressed line

4022b‧‧‧2nd compression line

4023‧‧‧ Short recess

4024‧‧ ‧Quasi-compression zone

4025‧‧‧Main absorption area

4211‧‧‧1st recess

4212‧‧‧2nd recess

5010‧‧‧Absorbent articles (diapers)

5010A‧‧‧Buckle belt

5010B‧‧‧Front patch sheet

5010C‧‧‧胯下区域区

5010D‧‧‧elastic sheet

5010F‧‧‧Predecessor area

5010L‧‧‧ leg opening

5010R‧‧‧Back area

5010W‧‧‧ Waist opening

5011‧‧‧ Covering film

5011N‧‧‧Gap section

5012‧‧‧Back sheet

5013‧‧‧ absorber

5014‧‧‧Front sheet

5015‧‧‧Three-dimensional wrinkles

5015N‧‧‧Gap section

5016‧‧‧Rubber line

5017‧‧‧Absorbable ontology

5018‧‧‧covered components

5019‧‧‧Rubber line

5020‧‧‧ recess

5020a‧‧‧1st recess

5020b‧‧‧2nd recess

5021‧‧‧Uplift

5040‧‧‧2nd roller

5030‧‧‧1st roll (1st rotating member)

5031‧‧‧ convex

5031a‧‧‧1st convex

5031b‧‧‧2nd convex

5040‧‧‧2nd roller (2nd rotating member)

5041‧‧‧Depression

5100‧‧‧ Manufacturing equipment

A‧‧‧Introduction of force (direction)

B‧‧‧ directions

C‧‧‧ directions

A~D‧‧‧ intersection

a~f‧‧‧ points

ABCDA‧‧‧ lattice

AB‧‧‧ lattice line

BC‧‧ Grid line

CD‧‧‧ grid line (direction)

DA‧‧‧ lattice line

IV-IV‧‧‧ hatching

IX-IX‧‧‧ hatching

L1‧‧‧ interval

L2‧‧‧ length

L3‧‧‧Width

M1‧‧‧Predecessor section

M2‧‧‧胯下下

M3‧‧‧ Back body part

MD‧‧ Direction

N1‧‧‧ Thinning formation area

N2‧‧‧ Thin section non-formation area

P‧‧‧ imaginary line

Q‧‧‧dred circle

Q1‧‧‧depth

Q2‧‧‧depth

Q3‧‧‧Differential

Q4‧‧‧ thickness

S1‧‧‧ interval (length of the grid side)

S2‧‧‧ interval (length of the grid side)

T‧‧‧ distance

U‧‧‧ Length

V‧‧‧Width

V1‧‧‧Width

VII‧‧‧dotted ellipse

W‧‧‧ arrow (direction of travel)

‧‧‧‧specific angle

Β‧‧‧specific angle

Fig. 1 is a perspective view showing the appearance of a diaper-type disposable diaper to which an absorbent article according to a first embodiment of the present invention is applied.

Fig. 2 is a development view of a diaper-type disposable diaper according to a first embodiment of the present invention.

Fig. 3 is a perspective view showing the disposable diaper according to the first embodiment of the present invention in an exploded state.

Figure 4 is a cross-sectional view taken along line IV-IV of Figure 2 taken along the line.

Fig. 5 is a view showing an absorbent body of the disposable diaper according to the first embodiment of the present invention.

Fig. 6 is a partial cross-sectional view taken along line VI-VI of Fig. 5.

Fig. 7 is an enlarged view showing a thinned portion of the absorbent body according to the first embodiment of the present invention.

Fig. 8 is an enlarged view showing the upper surface of the absorbent body according to the first embodiment of the present invention.

Fig. 9 is a cross-sectional view taken along the line IX-IX of Fig. 8, and is a cross-sectional view showing a thinned portion of the upper surface of the absorber.

Fig. 10 is an enlarged view showing the upper surface of the absorber of the second embodiment of the present invention.

Fig. 11 is a cross-sectional view taken along line XI-XI of Fig. 10, and is a cross-sectional view showing a thinned portion of the upper surface of the absorber.

Fig. 12 is an enlarged view showing the upper surface of the absorbent body according to a modification of the second embodiment of the present invention.

Figure 13 is a cross-sectional view taken along line XIII-XIII of Figure 12, and is a cross-sectional view showing a thinned portion of the upper surface of the absorbent body.

Fig. 14 is a partially broken plan view showing the diaper according to the third embodiment of the present invention, which is unfolded from the skin contact surface side.

Fig. 15 is a cross-sectional view showing the diaper shown in Fig. 14 cut along the XV-XV line.

Fig. 16 is an exploded perspective view showing the diaper according to the third embodiment of the present invention in a developed state and exploded.

Fig. 17 is a partial plan view showing the absorbent body portion of the diaper according to the third embodiment of the present invention as seen from the top sheet side.

Fig. 18 is a schematic partial plan view showing an oblique plaid pattern portion of Fig. 17;

Figure 19 is an enlarged partial plan view showing an enlarged portion of Figure 18.

Figure 20 is a cross-sectional view taken along line XX-XX of Figure 19.

Figure 21 is a cross-sectional view taken along the line XXI-XXI of Figure 19.

Fig. 22 is a partially broken plan view showing the diaper according to the fourth embodiment of the present invention, which is unfolded and viewed from the skin contact surface side.

Figure 23 is a cross-sectional view showing the diaper shown in Figure 22 cut along the line XXIII-XXIII.

Fig. 24 is an exploded perspective view showing the diaper according to the third embodiment of the present invention unfolded and exploded.

Fig. 25 is a partial plan view showing the absorbent body portion of the diaper according to the third embodiment of the present invention as seen from the top sheet side.

Fig. 26 is a schematic partial plan view showing a portion of the embossed pattern in the oblique grid shape of Fig. 25.

Figure 27 is an enlarged partial plan view showing an enlarged portion of Figure 26.

Figure 28 is a cross-sectional view taken along line XXVIII-XXVIII of Figure 27;

Figure 29 is a cross-sectional view taken along line XXIX-XXIX of Figure 27;

Fig. 30 is a perspective view of the outer appearance of an example of the diaper according to the fifth embodiment of the present invention as seen from the front side.

Figure 31 is an exploded perspective view of the diaper shown in Figure 30.

Fig. 32 is a schematic plan view of the diaper in an extended state according to the fifth embodiment of the present invention as seen from the top sheet side.

Figure 33 is a schematic view showing a cross section taken along line XXXIII-XXXIII of Figure 32.

Figure 34 is a schematic view showing a cross section taken along the line XXXIV-XXXIV of Figure 32.

Fig. 35 is a schematic view showing a cross section taken along the line XXXV-XXXV of Fig. 32;

Fig. 36 is a schematic plan view of the absorbent body according to the fifth embodiment of the present invention as seen from the top sheet side.

Fig. 37 is a view for explaining a state in which a compression absorber is sandwiched between two rolls in the fifth embodiment of the present invention.

Fig. 38A is a cross-sectional view showing a state in which a compression absorber is sandwiched between a convex portion and a concave portion, and is a cross-sectional view in the MD direction.

38B is a cross-sectional view showing a state in which the compression absorber is sandwiched between the convex portion and the concave portion, and is a cross-sectional view in the CD direction.

Fig. 39 is a schematic cross-sectional view showing the MD direction for explaining a case where the compression absorber and the top sheet are sandwiched by two rolls in another embodiment of the present invention.

40A is a plan view showing an example of a convex portion pattern on the surface of the first roller, which shows oblique To the grid pattern.

40B is a plan view showing an example of a convex portion pattern on the surface of the first roller, and shows a vertical and horizontal lattice pattern.

41A is a plan view showing an example of a depressed portion pattern on the surface of the second roll, and shows a pattern of a vertical stripe shape.

Fig. 41B is a plan view showing an example of a depressed portion pattern on the surface of the second roller, which shows a pattern of a checkerboard pattern.

41C is a plan view showing an example of a pattern of a depressed portion on the surface of the second roll, which shows a pattern in which rhombuses are arranged neatly in an oblique lattice shape.

41D is a plan view showing an example of a pattern of a depressed portion on the surface of the second roll, which shows a pattern in which squares are arranged neatly in a vertical and horizontal lattice shape.

Fig. 42A is a view showing an example of a pattern of a ridge formed on an absorbent body, which shows a pattern in which the butterfly shapes are arranged neatly in an oblique lattice shape.

Fig. 42B is a view showing an example of a ridge pattern formed on an absorbent body, which shows a pattern in which a substantially oblique cross is continuous.

Fig. 42C is a view showing an example of a pattern of a ridge formed on an absorbent body, which is a pattern in which rhombuses are arranged neatly in an oblique lattice shape.

Fig. 42D is a view showing an example of a ridge pattern formed on an absorbent body, which shows a pattern of a vertical stripe shape.

Fig. 42E is a view showing an example of a ridge pattern formed on an absorbent body, which shows a pattern in which squares are arranged neatly in a vertical and horizontal lattice shape.

Fig. 42F is a view showing an example of a ridge pattern formed on the absorber, which shows a pattern in which the X shapes are aligned in an oblique lattice shape.

Fig. 43A shows an example of a cross-sectional shape of a depressed portion, which shows a depression having a trapezoidal shape.

Fig. 43B is a view showing an example of a sectional shape of a depressed portion, which shows that the side wall becomes a concave portion of two stages. trap.

Definition

In the description of the specification and the scope of the patent application, the "lattice" refers to a group of first straight lines extending in parallel with the first direction and a second straight line extending in parallel with the second direction intersecting the first direction. Group definition, but the first and second directions may not be orthogonal.

The "intersection point" refers to a portion which is a lattice line of the first straight line and intersects the lattice line which is the second straight line, but may be referred to as a "lattice point" in the following description.

"Compression" means reducing the thickness of the absorber by the action of force to increase the density. On the other hand, "pressing" does not mean that the thickness of the absorber is necessarily reduced by the action of the force, and the density is increased. That is, for example, the case where the force is applied to the intersecting region causes a bulge due to the surface on the opposite side of the absorbent body, and substantially the thickness of the absorbent body is not reduced, and the density is not increased. Moreover, "compression" or "pressing" is not only directly generated by the action of force, but also includes an indirect connection caused by the sinking of the action part following the direct force.

Further, in the description of the present specification and the patent application, the "thinned portion" refers to a linear region which is formed along a lattice line of a lattice and has a portion which is more concave than a surface on the front sheet side of the absorbent body. The "thinning portion" is defined as a boundary between the intersection portion including the intersection of the lattice lines and the periphery thereof, that is, extending between the intersection region and the intersection region so as not to exceed the intersection region. Further, the "thinned portion" may be a shape of a long groove which is a continuous concave portion in the extending range (which is mainly exemplified in the second to fifth embodiments), or may have a plurality of concave portions which are discontinuous. Shape (in the first embodiment, the shape is mainly exemplified).

2. First embodiment of an absorbent article

Hereinafter, the first embodiment of the absorbent article of the present invention will be described in detail with reference to the drawings. Furthermore, this embodiment is applied to a disposable diaper type diaper. (hereinafter also referred to as "diaper type diaper" or "diaper only").

The diaper type diaper can be applied to adults and children. Further, in the present embodiment, the diaper diaper is described as an example, but it is of course also applicable to the unfolded diaper (so-called diaper) described in the fifth embodiment. Further, the absorbent article of the present invention is not limited to only a diaper, but is applied to an absorbent pad or the like and other general absorbent articles as a whole. For example, as shown in Fig. 5, the present invention can also be applied to an absorbent pad or the like in terms of the structure of the absorbent body 13 and the portion of the top sheet 14, and has the same effects as those of the diaper. That is, the present invention is not limited to the embodiments and the other embodiments described below, and includes other absorbent articles that are subject to the concept of the present invention.

First, the overall shape of the diaper-type diaper to which the absorbent article according to the first embodiment of the present invention is applied will be described with reference to Figs. 1 to 4 .

Fig. 1 is a perspective view showing the appearance of the diaper-type diaper to which the absorbent article of the present embodiment is applied, viewed from the front side. Fig. 2 is a developed view of the diaper-type diaper of the embodiment.

The diaper cloth 10 of the present embodiment has a front body region 10F, a back body region 10R, and a crotch region 10C connecting the front body region 10F and the back body region 10R. Further, a waist opening portion 10W that surrounds the waist of the wearer in the front body region 10F and the back body region 10R at the time of wearing is formed. Similarly, a pair of left and right leg openings are formed in any region of the region from the thigh root to the vicinity of the thigh, which is formed by the lower body portion 10F and the lower body region 10R and the underarm region 10C surrounding the wearer's legs. Department 10L.

When the diaper-type diaper 10 is worn, the front body panel region 10F is located on the ventral side of the wearer, and the back body panel region 10R is located on the back side of the wearer. Further, the crotch region 10C covers the underarm of the wearer, and the leg of the wearer passes through the left and right pair of leg-opening portions 10L. Therefore, the leg-opening portion 10L is located at any position from the root portion to the vicinity of the calf in the legs of the wearer.

The diaper type diaper 10 is attached to the front body area 10F together with the underarm area 10C. The cover sheet 11 is provided in the body region 10R, and the right and left side edges of the cover sheet 11 are joined to each other to form a closed portion 10J. Thereby, the waist opening portion 10W and the pair of left and right leg circumference opening portions 10L are divided.

In the diaper-type diaper 10 of the present embodiment, an imaginary line P extending through the crotch region 10C from the ventral side toward the back side in the center of the diaper-type diaper 10 in the width direction or in the vicinity thereof is assumed. Specifically, the imaginary line P is extended along the ventral surface of the diaper 10 and in the up-and-down direction, for example, when the diaper-type diaper 10 is worn with the waist side as the upper side and the lower squat side as the lower side, and is passed through the underarm area. 10C, and the back side also extends along the surface of the diaper-type diaper 10 in the up and down direction. In the diaper-type diaper 10 of the present embodiment, the absorbent body 13 is elongated along the imaginary line P, and its longitudinal direction is parallel to the imaginary line P. Further, the direction orthogonal to the imaginary line P is defined as the width direction. Further, the ratio of the longitudinal direction to the width direction of the diaper-type diaper can be appropriately changed depending on the body type of the wearer.

As shown in FIG. 2, in the center of the left and right side edge portions in the longitudinal direction of the cover sheet 11, one of the semi-arc-shaped notch portions 11A which is the leg-surrounding opening portion 10L of Fig. 1 is formed. The absorber 13 having an elongated rectangular shape is disposed on the surface of the cover sheet 11 that is in contact with the wearer's skin so as to extend over the front body region 10F, the crotch region 10C, and the back body region 10R. The absorbent body 13 is joined to the back sheet 12. The back sheet 12 joined to the absorber 13 is joined to the cover sheet 11 such that the longitudinal direction thereof is substantially parallel to the imaginary line P and the imaginary line P passes through the center of the width direction or a position in the vicinity thereof. On the surface of the absorbent body 13, a liquid permeable top sheet 14 that is in contact with the wearer's skin is joined.

The cover sheet 11 is joined with a rubber thread 15 for forming a leg gather wrinkle and a rubber thread 17 for forming a waist gather, respectively, in an extended state.

Further, the left and right side edges of the top sheet 14 are provided with a side sheet 18 which forms one of the three-dimensional gathers. The pair of side sheets 18 are members for liquid impervious to stand on both side edges of the absorbent body 13 at the time of wearing to prevent side leakage of urine excreted by the wearer. Each of the side sheets 18 is disposed such that its inner end edge portion is folded back and held toward the absorber 13 side. The rubber thread 19 which is a three-dimensional pleated stretch material rises in the direction in which the wearer's skin abuts when the rubber thread 19 contracts. The three-dimensional wrinkles can be used in the well-known construction of previous diapers. For example, it can be formed by sandwiching and fixing the three-dimensional pleated stretch material in an extended state between the layers of the water-repellent sheet.

Fig. 3 is a perspective view showing an exploded state in which the diaper diaper 10 of the present embodiment is broken and unfolded. The laminated structure of the diaper diaper 10 will be described with reference to Fig. 3 .

As shown in FIG. 3, the diaper-type diaper 10 sequentially overlaps and joins the cover sheet 11, the liquid-impermeable back sheet 12, the absorbent body 13, and the top sheet 14 from the outside.

The cover sheet 11 on which the pair of notch portions 11A are formed is formed by the inner cover sheet 11B on the skin side of the wearer and the outer cover sheet 11C joined to the outer side of the inner cover sheet 11B. The inner cover sheet 11B is joined to the back sheet 12. The absorbent body 13 is disposed between the back sheet 12 and the top sheet 14, and joins the top sheet 14 to the back sheet 12 via the absorbent body 13. The outer cover sheet 11C is formed of a thin non-woven fabric in order to obtain a good hand feeling, and rubber lines 15 and 17 are respectively joined between the inner cover sheet 11B and the outer cover sheet 11C in an extended state. Further, the left and right side edges of the top sheet 14 are provided with a side sheet 18 which forms one of the three-dimensional gathers. The pair of side sheets 18 are members for erecting along the both side edges of the absorbent body 13 at the time of wearing to prevent side leakage of urine excreted by the wearer. Each of the side sheets 18 has a rubber thread 19 as a three-dimensional gather stretch material in a shape in which the inner end edge portion is folded back and held toward the absorber 13 side.

Further, the base sheet 12, the absorbent body 13, and the top sheet 14 may be used to form an absorbent article which is joined to a pair of pants or the like to absorb liquid.

Fig. 4 is a cross-sectional view showing the diaper diaper 10 of the present embodiment taken along line IV-IV of Fig. 2 . The cross-sectional shape of the absorber 13 of the diaper diaper 10 will be described with reference to Fig. 4 .

On the surface of the top sheet 14, the absorbent body 13 and the top sheet 14 are compressed by intermittent embossing to integrally form a plurality of concave portions of a quadrangular shape. By arranging a plurality of concave portions at intervals, a thinned portion that functions as a groove for allowing liquid such as urine to pass through is formed. 401. The thinned portion 401 has a depth from the side of the top sheet 14 side of the absorber 13 toward the side of the back sheet 12 . A portion surrounded by the thinned portion 401 formed on the surface of the absorber 13 is referred to as a deformation suppressing portion 402. Details of the deformation suppressing portion 402 will be described later. Further, the ridge line at the upper portion of the thinned portion 401 indicates the outline 403 of the portion of the non-thinned portion 401 which is seen when cut in the cross section.

Next, the absorbent body 13 of the diaper diaper 10 of the present embodiment will be described with reference to Figs. 5 and 6 . Fig. 5 is a plan view showing the upper surface of the absorbent body 13 of the diaper diaper 10 of the present embodiment on the side of the top sheet 14. The surface shape of the absorber 13 will be described with reference to Fig. 5 .

The absorbent body 13 is mainly composed of pulp and SAP. The absorber 13 has an elongated rectangular shape so as to extend over the front body region 10F, the crotch region 10C, and the back body region 10R. The absorber 13 is divided into three parts of the front body piece portion M1, the crotch portion M2, and the back body piece portion M3 in the longitudinal direction. Further, in the crotch portion M2, a pair of left and right leg-opening portions 10L surrounding the thigh portions of the wearer's legs may be formed to form one of the arc-shaped notch portions. The absorber 13 is in the front (upper) direction from the lower body portion M2 to the front body portion M1, and is in the rear (lower) direction from the lower jaw portion M2 toward the rear body portion M3, and in the front-rear direction (length) Direction) The direction orthogonal to the left and right direction (width direction). Further, the absorber 13 is rectangular, but the shape of the absorber of the present invention is not limited thereto. For example, the shape of the absorber includes a shape in which the angles of the front and rear (upper and lower) ends are cut into a circle, an ellipse extending in the front and rear (up and down), a circle, and a length of the front and rear (up and down) are equal to each other. Various shapes.

Further, in the absorber 13, a thinned portion 501 extending in a diagonal lattice shape is formed. In the present embodiment, the thinned portion 501 extends from one end of the thinned portion forming region N1 toward the other end in a staggered lattice shape. Further, the thinned portion 501 formed as a result of being compressed around the concave portion 502 of the absorbent body 13 may be intermittent or intermittent depending on the interval and depth of the concave portion 502, and may be continuous or both. Mix of. Moreover, the absorber 13 is composed of Covered with a core material (thin paper) not shown. The core material is a relatively thin sheet of hydrophilicity. Further, in the present embodiment, the absorber 13 coated with the core material is used, but the absorber of the present invention may not be coated with the core material. This point is also the same in the other embodiments described below.

As shown in FIG. 5, in the present embodiment, the thinned portion 501 is formed in the thinned portion forming region N1 by patterning a plurality of concave portions 502 at a predetermined interval. The thinned portion 501 is formed from one side in the width direction (left-right direction) of the absorber 13 orthogonal to the direction (longitudinal direction) indicated by the imaginary line P in the longitudinal direction of the absorber 13 to the other lower side ( a plurality of first thinned portions (first patterns) 501a in the first direction obliquely extending toward the paper surface in FIG. 5 from the upper right side to the lower left side, and the lower side from the other upper side (the paper surface in FIG. 5) The upper left side to the lower right side is configured by a plurality of second thinned portions (second patterns) 501b that are obliquely extended in the second direction. Each of the first thinned portions 501a is arranged parallel to each other and at a predetermined interval. Similarly, each of the second thinned portions 501b is arranged parallel to each other and at a predetermined interval. However, the plurality of thinned portions 501 may not be completely parallel to each other, and may not be fixed to each other.

In FIG. 5, the plurality of first thinned portions 501a are inclined at the same angle with respect to the imaginary line P, and are arranged at a specific interval. In other words, each of the first thinned portions 501a is arranged in parallel and at a predetermined interval. However, the present invention is not limited thereto, and includes a case where the interval between the thinned portions is not fixed or the inclined portions of the thinned portions are different. The same applies to the second thinned portion 501b. Further, in the absorber 13, the first thinned portion 501a and the second thinned portion 501b are each formed in a plurality of strips. However, if the first thinned portion and the second thinned portion are formed in the oblique direction, the first thinned portion and the second thinned portion are formed. The number of thinning portions is not limited. Although it is preferable to cross the two, the present invention is not limited thereto, and includes a case where the two do not intersect. Details regarding the role of the thinning portion are described below.

Further, the absorber 13 has a thinned portion forming region N1 in the central portion in the width direction, and has a thinned portion non-formed region N2 on both sides thereof. Both side edges in the width direction of the absorber 13 are thinned portion non-formation regions N2, and in the central region, the thinned portion forming region N1 extends in a strip shape from one end in the direction indicated by the imaginary line P toward the other end.

Figure 6 is a section of the diaper-type diaper 10 of the present embodiment based on the line VI-VI of Figure 5; Sectional view.

In the thinned portion 501, the member 13 having the specific thinned portion pattern is formed on the surface of the top sheet 14 of the self-absorbent body 13, and the absorbent body 13 is compressed while being heated to form the concave portion 502. Further, the width and depth of each thinned portion 501 may be uniform, or may vary depending on the interval from the adjacent thinned portion, the position of the thinned portion, and the like. Further, the side wall portion of the concave portion 502 provided in the thinned portion 501 may be a V-shaped obliquely inclined from the surface of the absorber as shown in FIG. 6, or may be a substantially vertical extension. Further, the ridge line at the upper portion of the concave portion 502 indicates the outline 601 of the portion of the non-recessed portion 502 which is seen when cut in the cross section.

By the above-described compression for forming the thinned portion 501 having the concave portion 502, the thinned portion concave portion 502 and the vicinity thereof (including the gap portion between the concave portions) are more compressed than the other portions, thereby enhancing the absorbent body 13 The density. The compression ratio of the thinned portion concave portion 502 having the largest degree of compression is preferably about 4 times to 7 times, and the range of other compression ratios is also included depending on the material of the absorbent body 13 or the liquid to be absorbed. Further, the density of the absorber in the compressed portion is twice or more as compared with the uncompressed portion. The density of the absorbent body is mainly the density of the pulp.

As described above, the concave portion 502 of the thinned portion 501 in the absorbent body 13 is formed by compressing the absorbent body 13. Therefore, the concave portion 502 of the thinned portion 501 and, as the case may be, the absorbent body 13 is compressed to a greater extent and harder than the other portions of the absorbent body 13.

Further, since the deformation suppressing portion 402 presses the outer peripheral portion of the absorption in the deformation suppressing portion 402 by the concave portion 502, it is less likely to be deformed. Therefore, even if the tensile force is generated in the oblique direction with respect to the longitudinal direction, the absorbent body 13 is less likely to be twisted and twisted due to the rigidity of the concave portion 502, and the deformation suppressing portion 402 is not easily deformed, and as a result, the tilting direction is suppressed. The deformation. Therefore, even after the front and rear movement of the leg, the absorbent body 13 is not deformed and deformed. Since the absorbent body 13 is not twisted, the conformity to the sputum can be maintained, and the body fluid leakage is not easily caused. Further, since the deformation of the absorber 13 can be suppressed by the deformation, the absorption performance can be maintained.

Further, in the present embodiment, the thinned portion forming region N1 extends from the front body portion M1 of the self-absorbing body 13 to the rear body portion M3, but the present invention is not limited thereto. In other words, the thinned portion forming region N1 may be formed only in the underarm portion M2. Further, the thinned portion forming region N1 may be formed only in the front piece portion M1, only in the back piece portion M3, or in the longitudinal direction end portion. Since the portion close to the waist portion is in close contact with the skin by the waist wrinkles, the wearing portion can be improved by making the hard portion of the thinned portion 501 not abut against the skin.

The diaper diaper 10 of the present embodiment is formed by compressing the surface of the top sheet 14 from the surface layer of the top surface sheet 14 of the absorbent body 13 to form the thinned portion 501 having the concave portion 502. That is, the top sheet 14 is fixed in a state of being in close contact with the thinned portion 501. Thus, by compressing the top sheet 14 together, the deformation suppressing portion 402 is also formed on the top sheet 14, thereby suppressing twisting or breaking with respect to the movement during walking.

As described above, when the sheet laminated on the absorbent body 13 is also compressed together to form the concave portion 502, the top sheet 14 on the absorbent body 13 is in the vicinity of the concave portion 502 by the compression. Partially sinks to the side of the absorber 13 and is integrated with the absorber 13. By the fixation of such a firm absorbent body 13 with various sheets, the twisting or offset of the absorbent body 13 is suppressed even after the front and rear movement of the legs.

Fig. 7 is an enlarged view showing a part of the thinned portion 501 on the upper surface of the absorbent body 13 of the present embodiment (the thinned portion 501 of the absorber 13 surrounded by the broken line VII in Fig. 5).

The thinned portion 501 can be configured by arranging a plurality of concave portions 502 at intervals L1 (i.e., discontinuously). In the present embodiment, the concave portion 502 has a quadrangular shape, for example, and can be formed by compressing the absorbent body 13 with an embossing die of the same shape. The interval L1 is about 2 mm. Further, the length L2 of the concave portion is about 2.4 mm. Further, the width L3 of the concave portion is about 2 mm. L1, L2, and L3 are preferably in the range of 1 mm, L1, 5 mm, 1 mm, L2, 50 mm, and 1 mm, L3, and 5 mm, respectively. Furthermore, the recess 502 is a pattern representative, the number or size of which follows this range.

The concave portions 502 are arranged at intervals L1, but the gap 701 between the adjacent concave portions 502 is further recessed than the deformation suppressing portion 402 surrounded by the thinned portion 501. That is, with the compression at the time of forming the concave portion 502, the absorber 13 of the gap 701 portion is stretched, and the concave portion 502 becomes larger than the deformation suppressing portion. 402 is more concave. Therefore, although there is a difference in height between the concave portion 502 and the gap 701, they are lower than the uncompressed portion, and the thinned portion 501 which is lower than the deformation suppressing portion 402 as a whole is formed.

In the thinned portion 501 which is formed by intermittent embossing, the compression ratio is preferably about 4 to 7 times in the portion of the concave portion 502, but is not limited to the range, and is based on the material of the absorbent body 13. Or the liquid to be absorbed, and other ranges.

Thus, the thinned portion 501 can be formed by intermittent embossing. Thereby, it is possible to suppress the twisting or deformation of the absorbent body caused by the front and rear movement of the leg or the like. Further, when the embossing of the thinned portion 501 is intermittent, the thinned portion 501 itself is easily bent, and is more conformable to the body, and is easy to follow the movement of the body, thereby suppressing the hard feeling.

FIG. 8 is an explanatory view of the thinned portion 501 formed on the upper surface of the absorber 13 of the present embodiment, and is enlarged in a lattice shape in the thinned portion forming region N1 surrounded by the broken line circle Q in FIG. 5 . Picture. As shown in FIG. 8, the thinning portion 501 is provided in each of four grid lines AB, BC, CD, and DA which form an oblique lattice ABCDA by orthogonally intersecting points A, B, C, and D, Further, in each of the thinned portions 501, a plurality of concave portions 502 are arranged at intervals. The concave portion 502 has a function of imparting an uneven shape to the absorbent body 13 and diffusing the liquid or the like on the absorbent body 13. Furthermore, the lattice lines AB, BC, CD, and DA in Fig. 8 are schematically represented. In the present embodiment, as an example, the concave portion 502 has a rectangular shape and can be formed by compressing the absorbent body 13 with an embossing die of the same shape. Further, it is preferable that the interval between the plurality of concave portions 502 is 1 mm to 5 mm, the length of the concave portion 502 is 1 mm to 50 mm, and the width of the concave portion 502 is in the range of 1 mm to 5 mm.

As shown in FIG. 8, three recesses 502 are intermittently arranged on the line segment AB. The concave portion 502 located near the midpoint of the line segment AB is compressed to the deepest, and the vicinity of the intersection point A and the intersection point B on the line segment AB is compressed shallower than the concave portion 502. Further, the number of the concave portions 502 is not limited to three as in the present embodiment.

Fig. 9 is a cross-sectional view taken along the line IX-IX of Fig. 8 formed on the upper surface of the absorbent body 13 of the present embodiment. As shown in FIG. 9, the thinning portion 501 is on the line segment AB. The portion from the intersection point A to the intersection point B is configured to intermittently arrange the recesses 502. The intersection area of the grid lines AB and DA (intersection point A and its vicinity) 901 and the intersection area of the grid lines AB and BC (intersection point B and its vicinity) 902 are compressed to the shallowest, and are located in the adjacent two intersection areas 901 and 902. The recess 502 of the intermediate portion 903 is compressed the deepest. Thus, the lattice line AB is formed by a region compressed into a plurality of depths. In other words, in the present embodiment, the thinned portion 501 has a boundary that is compressed so that the depth from the surface of the front sheet side of the absorber 13 is shallower than the portion where the thinned portion 501 is the deepest. Further, in the present embodiment, the example in which the thin portion 501 is formed with the concave portion 502 intermittently is shown, but the present invention is not limited thereto. For example, the recessed portion 502 may be continuously connected to form the thinned portion 501, and the depth of the recessed portion 502 gradually becomes shallower from the central portion of the intermediate portion 903 toward the intersecting regions 901 and 902.

Between the lattice lines AB, at the bottom of the recess 502 having the deepest depth of the thinned portion 501, an interlayer joint compressing portion 904 having a depth deeper than the concave portion 502 and deeper is formed intermittently. By forming the interlayer joint compressing portion 904, the absorber 13 can be integrated with the back sheet 12 superposed on the absorber 13 by compression. Further, the interlayer bonding and compressing portion 904 may be formed in one or a plurality of layers. Further, the ridge line at the upper portion of the concave portion 502 indicates the outline 905 of the portion of the non-recessed portion 502 which is seen when cut in the cross section.

Next, an example of a method of processing the surface shape of the absorbent body 13 of the present embodiment will be described with reference to Figs. 8 and 9 .

In the case where the oblique lattice ABCDA is formed on the upper surface of the absorber 13 of the present embodiment, the concave portions 502 are generally arranged by the embossing technique to form the lattice lines AB, BC, CD, and DA, thereby forming the oblique lattice. ABCDA. Specifically, for example, the forming roller is rotated in a direction orthogonal to the extending direction of the rotating shaft to form the concave portion 502. In Fig. 8, the extending direction of the rotating shaft of the forming roll is orthogonal to the line segment CA, and the forming roll is rotated from the intersection point C toward the intersection point A in parallel with the line segment CA (in the direction of the arrow in Fig. 8). Here, when the depth of the concave portion of the thinned portion 501 on the lattice lines AB and DA is fixed, when the forming roller approaches the intersection region 901 near the intersection A, there is a material of the surface of the absorber 13 Gradually turning to point A and causing tension.

However, in the concave portion 502 of the portion where the thinned portion 501 is formed in the present embodiment, since the depth of the intersecting region 901 is shallower than the depth of the concave portion 502 of the intermediate portion 903, the material on the surface of the absorbent body 13 can be prevented from approaching the intersection A. Thereby, in the intermediate portion 903, since the absorbent body 13 is compressed toward the back sheet 12 on the one hand, the tension is not caused in the intersection region 901, and the material of the absorbent body 13 in the vicinity of the intersection A is not broken. The flexibility of the absorbent body 13 can be improved. Further, since the hardness of the surface of the absorbent body 13 can be lowered, the wearability of the wearer can be improved, and the wearing comfort or the skin feel can be improved.

Further, the shape of the thinned portion is not limited to the shape of the embodiment, and the thinned portion may be formed in a continuous line in the extending direction, or may be enlarged in the intermediate portion in the width of the cross section orthogonal to the extending direction. The intersection area is formed narrower. Further, the thinned portion may be formed as a continuous line, and the remaining portions may be formed intermittently, or the cross-sectional area of the thinned portion orthogonal to the extending direction may be changed according to a combination of the width and the change in depth.

3. Second embodiment of an absorbent article

Fig. 10 is an explanatory view showing a thinned portion 1001 formed on the upper surface of the absorber 13 of the second embodiment of the diaper diaper shown in Fig. 1, and is a broken line in Fig. 5 of the first embodiment. An enlarged view of one lattice shape in the thinned portion forming region N1 surrounded by the circle Q is shown. The shape of the absorber 13 of the present embodiment is different from the shape of the absorber 13 of the first embodiment in that a groove portion 100 is formed in a continuous groove shape in the lattice line AB. However, a portion between the points bc of the recess 1002 is formed. Since the thinned portion 1001 is a recess portion which is located deeper between the point Ab and the point cB of the concave portion 1002 of the intersecting region.

More specifically, as shown in FIG. 10, on the lattice line AB, the portion between the point Aa of the concave portion 1002 near the intersection point A and the vicinity of the intersection point B and the point dB is the shallowest, and the point and the point Aa are respectively The portion between the points ab and the point cd between the adjacent recesses 1002 between dB is relatively deep compressed. Further, a portion (intermediate region) between the points bc of the concave portion 1002 located at the central portion of the lattice line AB is compressed the deepest, and the thinned portion 1001 is formed. In other words, in this implementation In the form, the area between the point Ab and the area between the points cB in the concave portion 1002 in which the lattice line AB is continuously formed is defined as belonging to the intersection area, and the intersection area is the area including the intermediate area, that is, the point between the points Aa and the point dB. The area between the area and the area outside the point, that is, the area between the points ab and the area between the points cd. Further, a portion between the points bc is the thinned portion 1001 of the present embodiment.

Fig. 11 is a cross-sectional view taken along line XI-XI of Fig. 10 of the absorbent body 13 of the present embodiment. As shown in FIG. 11, in the present embodiment in which the concave portion 1002 is continuously formed from the intersection point A to the intersection point B on the line segment AB, the central region (between the points Aa) 1101 and the lattice located at the intersection of the lattice lines AB and DA are formed. The portion of the recess 1002 of the central region (between the points dB) 1102 of the intersection area of the lines AB and BC is compressed to the shallowest. The portion of the recess 1002 outside the intersection regions 1103 and 1104 (between the points ab and the dots cd) between the adjacent two central regions 1101 and 1102 is relatively deep compressed. Further, a portion of the concave portion 1002 located in the intermediate portion 1105 (between the points bc) between the outer regions 1103 and 1104 is the thinned portion 1001 that is compressed the deepest. Thus, the lattice line AB is formed by a region that is compressed stepwise into a plurality of depths. In the present embodiment, the thinned portion 1001 is formed to have the same depth and continuously formed, but the present invention is not limited thereto. For example, similarly to the first embodiment described above, the recessed portions may be intermittently arranged to form the thinned portion 1001. Moreover, the depth of the phase between the area between the points ab and the area between the points cd may be three stages or more instead of only two stages.

Between the lattice lines AB, at the bottom of the intermediate portion 1105 having the deepest depth of the concave portion 1002, an interlayer joint compressing portion 1106 having a depth deeper than the intermediate portion 1105 and deeper is formed intermittently. By forming the interlayer joint compressing portion 1106, the absorber 13 and the back sheet 12 superposed on the absorber 13 can be integrated by compression. Further, the interlayer bonding and compressing portion 1106 may be formed in one or a plurality of layers. Moreover, the ridge line of the upper part of the recessed part 1002 is shown by the outline 1107 of the part of the non-thinning part 1001 seen by the cross section.

In the absorber 13 of the present embodiment, the depth of the recessed portion 1002 is directed toward the central region 1101 of the intersection region from the intermediate region 1105 via the intersection region outer regions 1103 and 1104. Since 1102 is gradually changed in stages, it is possible to prevent the material on the surface of the absorber 13 from approaching the intersection point A as in the first embodiment. Thereby, in the outer region 1103 or the intermediate region 1105 (especially the intermediate region 1105), since the absorber 13 is compressed toward the back sheet 12, the tension does not occur in the central region 1101, so that the vicinity of the intersection A is The material of the absorbent body 13 is not broken, and the softness of the absorbent body 13 can be improved. Further, since the hardness of the surface of the absorbent body 13 can be lowered, the wearability of the wearer can be improved, and the wearing comfort or the skin feel can be improved.

Here, the difference between the depths of the contour line 905 and the intermediate portion 903 of the absorber 13 of the first embodiment is small. On the other hand, in the absorber 13 of the present embodiment, the difference between the depth of the outline 1107 and the outer areas 1103 and 1004 is large, so that the absorber 13 is easily bent along the recess 1002. Thereby, in the present embodiment, the flexibility of the absorber 13 can be further improved as compared with the first embodiment.

Fig. 12 is an explanatory view showing a thinned portion 1201 formed on the upper surface of the absorber 13 according to the modification of the second embodiment, and is a thinned portion forming region surrounded by a broken line circle Q in Fig. 5 of the first embodiment. One grid shape in N1 is enlarged to show a map. The shape of the absorber 13 of the present embodiment is different from the shape of the absorber 13 of the second embodiment in that a groove portion 100 is formed in a continuous groove shape in the lattice line AB. However, the thin portion 1201 between the points be Two recessed portions 1202 are formed intermittently.

More specifically, as shown in FIG. 12, on the lattice line AB, the vicinity of the intersection A (between the points Aa) and the vicinity of the intersection B (between the points fB), that is, the central area of the intersection area is compressed to the shallowest, between the point Aa and The point af between adjacent points dB is compressed deeper than the central area. Further, the concave portion 1202 between the points bc on the both sides of the point between the points af on the lattice line AB and the point de is further compressed to the deepest. That is, the thinned portion 1201 of the present embodiment is provided with the recessed portion 1202 that is the deepest compressed.

Fig. 13 is a cross-sectional view taken along line XIII-XIII of Fig. 12 of the absorbent body 13 of the present embodiment. As shown in FIG. 13, in the intersection area A from the intersection point A to the intersection point B on the line segment AB, the central area 1301 of the intersection area of the grid lines AB and DA and the intersection area of the grid lines AB and BC The portion between the points Aa and the points fB of the field 1302 is compressed to the shallowest, and the points between the outer regions 1303 and 1305 and the points ef between the outer regions 1301 and 1302 of the adjacent two intersecting regions are located. The part is compressed relatively deeply. Moreover, in the middle region (between the points be) between the outer regions 1303 and 1305, on the one hand, the portion 1306 between the point bc adjacent to the outer region 1304 and the portion 1307 between the dots adjacent to the outer region 1305 are compressed. The two recesses 1202 are formed to be the deepest. On the other hand, the depth of the portion 1304 between the points cd between the recesses 1202 is relatively shallower than the recess 1202. Thus, the lattice line AB is progressively compressed into a plurality of depths, and a plurality of regions that are compressed the deepest are formed. In the present embodiment, as in the second embodiment, an example in which the groove lines are formed in a continuous groove shape is shown, but the present invention is not limited thereto. For example, only the deepest recessed portions 1202 may be intermittently arranged to form the thinned portion 1201. Also, the depth of the stage can be more than 3 stages rather than only 2 stages. Further, the area of the deepest recess 1202 may be three or more.

Between the lattice lines AB, at the bottom of the concave portion 1202, interlaminar joint compression portions 1308 and 1309 which are deeper than the depth of the concave portion 1202 and deeper are formed intermittently. By forming the interlayer joint compressing portions 1308 and 1309, the absorber 13 and the back sheet 12 superposed on the absorber 13 can be integrated by compression. Further, the interlayer bonding compression portions 1308 and 1309 may be formed separately or in plural. Further, the ridge line of the upper portion of the concave portion 1202 is shown as a contour line 1310 of a portion of the non-thinned portion 1201 which is seen when cut in a cross section.

In the absorber 13 of the present embodiment, since the depth of the continuous concave portion (groove) on the grid line gradually becomes shallower toward the central regions 1301 and 1302 of the intersection region from the intermediate portion via the intersection region outer regions 1303 and 1305, Similarly to the first and second embodiments, it is possible to prevent the material on the surface of the absorber 13 from approaching the intersection point A. Thereby, in the outer region 1303 or the thinned portion region 1307 (particularly, the regions 1306 and 1307), since the absorber 13 is compressed toward the back sheet 12, the center region 1301 does not cause tightness, so the intersection point The material of the absorbent body 13 near A is not broken, and the softness of the absorbent body 13 can be improved. Further, since the hardness of the surface of the absorbent body 13 can be lowered, the wearability of the wearer can be improved and the wearing can be improved. Comfort or skin feel.

Further, in the absorbent body 13 of the present embodiment, since the thinned portion is formed into a wave shape which is easily bent by forming the deepest concave portion 1202 in the thinned portion, the flexibility of the absorbent body 13 can be further improved.

The absorbent body of the present invention may be coated with a hydrophilic sheet (such as a core material) and compressed together with the hydrophilic sheet to form a concave portion. Further, the absorbent body, the hydrophilic sheet, and the top sheet may be collectively compressed from the surface of the top sheet to form a concave portion.

Further, the shape of the concave portion is not limited to the rectangular shape, and various shapes can be used. For example, circles, ellipses, squares, triangles, and the like. In any of these arbitrary shapes, a thinned portion may be formed on the surface of the absorber. Further, in the above-described embodiment, the numerical values such as the width or the depth of each concave portion are measured based on the vicinity of the center of the vicinity of the maximum width or depth of each concave portion. In this way, the principle of the numerical value such as the width or the depth of each concave portion is a value measured based on the vicinity of the center of each concave portion. However, when the shape of each concave portion is complicated, the other portions of the concave portions may be used as the width or The basis for the measurement of the value such as depth.

In addition to the above effects, the present invention can improve the diffusing property of the liquid on the surface of the absorber by using the oblique lattice shape, thereby improving the utilization efficiency of the absorber and reducing the cost. Further, the forms of the absorber 13 according to the first to third embodiments of the present invention may be combined with each other.

4. Third embodiment of an absorbent article

An absorbent article according to a third embodiment of the present invention will be described in detail with reference to Figs. 14 to 21 . The third embodiment of the present invention can also be applied to the diaper-type diaper shown in Fig. 1 of the first embodiment, and the same configuration as that of the first or second embodiment is shown in Figs. 14 to 21 . The corresponding parts are marked with the same symbol.

Fig. 14 is a plan view of the diaper-type diaper according to the embodiment as seen from the skin contact surface side, and corresponds to a state in which the diaper shown in Fig. 1 is unfolded. Fig. 15 is a cross-sectional view showing the broken line of Fig. 14 taken along the line XV-XV, and Fig. 16 is an exploded perspective view showing the diaper type diaper shown in Fig. 14. Further, Fig. 17 is a partial plan view showing a portion where the absorbent body 3013 and the top sheet 14 of the present embodiment are located from the side of the top sheet 14, and Fig. 18 is a view showing a pattern of the oblique pattern of the embossed pattern of Fig. 17. Sexual top view.

The absorber 3013 of the present embodiment is basically made of the same material as the first and second embodiments. The absorbent body 3013 has an elongated shape so as to extend over the front piece, the underarm, and the back piece. Further, when divided into three parts of the front piece portion M1, the crotch portion M2, and the back piece portion M3, the left and right portions M2 are compared with the left and right pair of leg-opening portions 10L surrounding the thigh portions of the legs. One of the pair of notches 3013a is formed in an arc shape. Further, the notch portion 3013a may not be formed depending on the size of the absorber 3013. Further, the absorber 3013 of the present embodiment is an hourglass type in which the width of the center portion is narrower than the front and rear ends, but the shape of the absorber of the present invention is not limited thereto. If the front body portion is in the front-rear (up and down) direction from the front body portion and the direction orthogonal thereto is the left-right direction, for example, the corners of the front and rear (upper and lower) ends are cut into a circle, and the front and rear (up and down) are used. The shape of the elliptical shape, the round shape, and the length of the front and rear (up and down) are equal to each other. This point is also the same in the case where the notch portion is provided in the first and second embodiments described above.

Further, as shown in FIG. 17 and FIG. 18, the diaper 10 has a thinned portion forming region (embossed pattern forming region) N1 which is compressed by regular embossing from the surface of the top sheet 14 toward the absorber 3013. . In the thinned portion forming region N1, an embossed pattern having a pattern that is substantially obliquely latticed is formed by the arrangement of the plurality of recessed portions 3021 and 3023 formed by compression. Specifically, the concave portion 3023 (hereinafter also referred to as "first concave portion" or "short concave portion") located at the intersection of the lattices and the concave portion 3021 located between the concave portions 3023 are provided (corresponding to the provisions of the present invention) The thinned portion has a continuous long groove shape, and is also referred to as a "second concave portion" or a "long concave portion" in the present embodiment. That is, the plurality of rows are formed by alternately arranging the concave portion 3021 and the concave portion 3023 into the compressed row 3022, and by arranging the plurality of rows of the compressed rows 3022, the lattice-shaped embossed pattern extending obliquely is formed. Although not shown in the drawings, the recess 3021 is a core material and an absorber from the surface of the top sheet 14. 3013 is formed by compression.

The long recessed portion 3021 of the present embodiment is inclined with respect to the imaginary line P along the central axis of the wearer's body when the diaper is worn. Specifically, the long concave portion 3021 is provided with a rightward long concave portion 3021a that is inclined at a specific angle α with respect to the imaginary line P in the first direction, that is, in the right direction in the drawing, and is inclined at a specific angle β in the second direction, that is, in the left direction in the drawing. The leftwardward long recess 3021b. Further, as shown in FIG. 7, the long concave portion 3021 and the short concave portion 3023 which are inclined in the same direction are disposed so as to alternately vacate the specific interval L1.

As shown in FIG. 17, the row in which the rightward long recessed portion 3021a is arranged is referred to as a first compressed row 3022a, and the row in which the left elongated recessed portion 3021b is arranged is referred to as a second compressed row 3022b. These compression lines 3022 are linearly inclined with respect to the imaginary line P at the same angle as the inclination angle of the long concave portion 3021. Further, the plurality of rows of first compressed rows 3022a are arranged in parallel with each other at an interval S1. Further, the plurality of rows of second compressed rows 3022b are arranged in parallel with each other at an interval S2. Further, the interval S1 between the rows 3022 and the interval L1 between the rows of the recesses 3021 and 3023 is determined such that the short concave portion 3023 is located at the intersection of the first compressed row 3022a and the second compressed row 3022b. In this manner, by arranging the plurality of rows of the first compressed row 3022a and the second compressed row 3022b, the embossed pattern in which the short concave portions 3023 are located at the intersection point in the diagonal lattice shape is formed. In the present embodiment, the intervals S1 and S2 are the same value, but they may be different values.

Further, as can be understood from Fig. 17 and Fig. 18, one of the lattices (squares) has the following constitution. The four sides are formed by the respective long recesses 3021, and the four apexes are formed by the short recesses 3023. Here, the length of the long recess 21 is shorter than the previous intervals S1, S2. As shown in FIG. 17, at the lattice point, the rightward long concave portion 3021a and the left long long concave portion 3021b do not overlap. In other words, in the present embodiment, the non-overlapping region is defined as an intersection region, and the intersection region is a region including the central portion of the short concave portion 3023 and the outer short portion 3023 and the outer concave portion 3021.

Further, as shown in FIG. 17, the embossed pattern is not formed at both ends of the absorber 3013. Therefore, the absorber 3013 is a compression portion non-formation region (embossed pattern non-formation region) N2 is located at the pressure The both sides of the constricted portion forming region (embossed pattern forming region) N1. This is to prevent the body fluid from leaking from the leg-opening portion 10L along the embossed pattern.

Fig. 19 is a schematic enlarged view of the vicinity of the intersection of the compressed lines of Fig. 18, and Fig. 20 is a view showing a section based on the line XX-XX of Fig. 19. Fig. 21 is a view showing a section based on the XXI-XXI line of Fig. 19.

As shown in FIG. 19, a region indicated by a broken line surrounding the long recessed portion 3021 and the periphery of the short recessed portion 3023 is a quasi-compressed region 3024. That is, in order to form the long recessed portion 3021 and the short recessed portion 3023, the top sheet 14 and the absorber 3013 are directly compressed to a greater extent, whereby the top sheet 14 and the absorber 3013 around the long recess 3021 and the short recess 3023 are Stretched and indirectly compressed. The region which is thus strongly compressed by the embossing die, that is, the slightly compressed region around the concave portion is referred to as a quasi-compression region 3024. Therefore, the compressed region of the absorber 3013 or the like, that is, the compressed region becomes the respective concave portions 3021 and 3023, and the quasi-compression region 3024 around them. Further, the regions other than the compressed regions in the absorber 3013 or the like are not compressed, but become uncompressed regions. In other words, the vicinity of the intersection point 3026 which is the outer side region between the short concave portion 3023 and the long concave portion 3021 which is the intersection of the lattice, and the main absorption region 3025 which is the inside of the lattice, are the uncompressed regions.

As shown in FIGS. 20 and 21, the unabsorbed region, that is, the main absorption region 3025 is the same as the thickness (height) of the absorber 3013 or the like in the vicinity of the intersection portion 3026. On the other hand, the long recessed portion 3021 and the short recessed portion 3023 are compressed by the absorber 3013 and the like, and are more recessed than the uncompressed region. Further, a portion where the uncompressed region and each of the concave portions 3021 and 3023 are connected and the thickness of the absorbent body 3013 gradually changes is a quasi-compression region 3024.

Next, the shape of each concave portion will be specifically described.

As shown in FIG. 19 and FIG. 20, the long recessed portion 3021 is formed by the long recessed portion first portion 3211 having the outer shape and the recessed portion first portion 3211 and the longer recessed portion first portion 3211. The circular long recessed portion second portion 3212 is formed. The long recessed portion first portion 3211 is elongated as the length U and the width V shorter than the lengths S1 and S2 of the side of the lattice as shown in FIG. Specifically, the two ends have a circular arc shape. Further, inside the long recessed portion first portion 3211, a circular long recessed portion second portion 3212 is disposed so as to be staggered at a predetermined interval with respect to the longitudinal center axis. The long recessed portion second portion 3212 has a longer recessed portion first portion 3211 that is recessed deeper in the thickness direction of the absorber.

As shown in FIG. 20, in the long recessed portion 3021, the long recessed portion second portion 3212 is located at the deepest point, and the long recessed portion first portion 3211 is located slightly raised from the bottom of the long recessed portion second portion 3212. When the depth to the deepest position of the long concave portion 3021, that is, the depth of the bottom portion of the long concave portion second portion 3212 is Q1, and the depth to the bottom portion of the long concave portion first portion 3211 is Q2, the difference of Q2 is subtracted from Q1. That is, Q3 is about 3.5 to 15% of the depth Q1 to the bottom of the second recess 3212 of the long recess. Further, when the thickness of the absorber-containing body 3013 and the top sheet 14 in the uncompressed region is Q4, the depth Q1 to the bottom of the second recess portion 3212 of the long recess portion is about 42.5% to 97.5% of the thickness Q4. Further, the depth Q2 to the bottom of the first recessed portion 3211 is about 37.5% to 95.0% of the thickness Q4. As described above, the long recessed portion 3021 of the present embodiment is formed by compressing the absorber 3013 to an extremely deep position. Moreover, it has a shape having a depth of two stages.

On the other hand, as shown in FIG. 9, the short recessed portion 3023 located at the intersection of the lattices is formed by compressing the absorber 3013 or the like to have the same depth Q2 as the long recessed portion first portion 3211.

The embossing process for forming the long concave portion 3021 and the short concave portion 3023 is such that an adhesive is interposed between the top sheet 14 and the absorbent body 3013, and the top sheet 14 and the absorbent body 3013 are compressed together from the surface of the top sheet 14. . The long recessed portion 3021 and the short recessed portion 3023 are formed by compressing the top sheet 14 and the absorber 3013 from the surface of the top sheet 14 by a specific mold formed on the embossing roll.

Further, in the long recessed portion 3021, the second recessed portion 3212 is a small circle having a small area. Therefore, in the pressing by the embossing roller, the pressure is concentrated on the second recess portion 3212, and the absorber 13 and the top sheet 14 are strongly compressed. At the time of this compression, the pulp fibers of the absorbent body 3013 are firmly entangled with the fibers of the top sheet 14, and joined together in a state in which they are integrated. Secondly, although the first portion 3211 of the long recess is also applied with the same pressing force during compression Force, but the area is wider, and accordingly, the pressure is not as concentrated as the second part 3212 of the long recess. Therefore, the engagement of the absorber 3013 with the top sheet 14 is slightly weaker than the long recess portion 212, but is sufficient to form the recess shape. As described above, in the second concave portion 3212 of the elongate portion, the absorber 3013 is strongly compressed, and the absorber 3013 is firmly joined to the top sheet 14, thereby maintaining the shape of the long recess 3021. For example, even when the wearer sits down and the like, and the pressure caused by the weight of the wearer is applied to the surface of the absorbent body 3013, the long concave portion 21 does not slack and maintain its shape. Further, even if the diaper 10 is strongly stretched by various activities of the legs, the top sheet 14 and the absorbent body 3013 are firmly joined, and the long recess 3021 maintains its shape. Here, it is also possible to form a two-stage structure in which the long recessed portion first portion 3211 and the long recessed portion second portion 3212 are not provided, and a strong compressive force is applied to the entire long recessed portion 3021. That is, in the embossing process, it is also possible to consider the inside of the substantially elliptical protrusion of the first recessed portion 1311 of the long recessed portion, and further compress the mold of the substantially elliptical projection having a gentle surface instead of making the control long recessed portion Two 3212 round protrusions protrude from the mold. However, since a portion where the pressure is concentrated cannot be produced by such a mold, if a strong pressure is not applied as a whole, a portion where the fibers of the front sheet and the absorber are joined in a state of being strongly entangled cannot be produced. As a result, the pressing force required becomes very strong, and there is a case where the top sheet 14 is broken. Further, in the compression by the weak pressing force as a whole, it is difficult to form the long recess 3021 which can withstand the weight of the wearer or various activities. In the present embodiment, the embossing die is provided with a projection corresponding to the second recessed portion 3212, and the portion of the top sheet 14 and the absorber 3013 is firmly joined by locally compressing to a greater extent. Moreover, the occurrence of defects such as cracking of the top sheet 14 at the time of manufacture is prevented. Further, depending on the strength or the amount of compression of the top sheet 14, the compression line may be formed by intermittently arranging the dot-like recesses or the like without using such a two-stage compression structure.

Further, the short concave portion 3023 provided at the intersection of the lattices is formed by pressing the absorbent body 3013 and the long recessed portion first portion 3211 to the same extent as described above by the embossing roller. The strength of the pressing is such that the top sheet 14 does not break, and the strength of the joining of the top sheet 14 to one of the absorbent bodies 3013 is achieved.

As shown in FIG. 20 and FIG. 21, in the absorber 3013, the bottom surface portion of the long recessed portion second portion 3212 is the high-density portion 3013A having the highest density of the absorber. Further, the uncompressed region such as the main absorption region 3025 and the vicinity of the intersection portion 3026 is the low density portion 3013D having the lowest density of the absorbent body. Further, the bottom surface portion of the long recessed portion first portion 3211 and the bottom portion of the short recessed portion 3023 are the medium density portion 3013B. The quasi-compression region 3024 is a density changing portion 3013C whose density gradually decreases toward the uncompressed region.

Here, the absorbent body 3013 mainly contains SAP and pulp as described above, and the density is mainly related to the density of the pulp fibers. Therefore, the high-density portion 3013A is in a state in which the pulp is compressed and the gap between the pulps is small. On the other hand, the low-density portion 3013D is in a state in which the gap between the pulps is larger than the high-density portion 3013A.

Further, since the concave portions 3021 and 3023 are formed by compressively joining the top sheet 14 which is a synthetic fiber and the absorbent body 3013 whose main component is pulp, the bottom surfaces of the concave portions 3021 and 3023 are formed into a film shape and are regarded as substantially non-absorbent. liquid. Therefore, the body fluid discharged to the concave portions 3021 and 3023 is absorbed by the density changing portion 3013C which is the side wall of the concave portions 3021 and 3023, and is transported to the main absorption region 3025.

As described above, in the present embodiment, when the compressed row 3022 is formed, the recesses 3021 and 3023 are not formed as continuous recesses, and the recesses 3021 and 3023 are intermittently arranged. In particular, the short concave portion 23 is provided at the intersection of the oblique lattice, and the next long concave portion 3021 is located away from the intersection. The reason why the interval L1 is set in this way will be described below.

As described above, the compressed row 3022 of the oblique lattice is formed by pressing the embossing roll having the molds facing the concave portions 3021 and 3023 on the surface while rotating. As shown in Fig. 18, when the embossing roller rotates one side and travels in the direction of the arrow W, all of the long recessed portions 3021 are arranged in a direction orthogonal to the traveling direction W of the embossing roller (parallel to the direction of the rotating shaft). At the same time being pressed. In the present embodiment, the size of the embossing roller is determined such that the circumference of the embossing roller corresponds to the length of the absorbent body 3013 in the longitudinal direction, but the invention is not limited thereto.

Further, in the present embodiment, the traveling direction W of the embossing roller is perpendicular to the rotation axis of the embossing roller, and when the diaper 10 is completed, it is parallel to the direction of the previous imaginary line P. As described above, after the top sheet 14 and the absorber 3013 are compressed together by the embossing roll, the other sheets and the like which are required are laminated and the like, and cut into the size of the diaper 10. Since the cutting is performed over the length of the front piece, the underarm, and the back piece of the diaper 10, the traveling direction W of the embossing roll can be made parallel to the imaginary line P to form an imaginary line P. An oblique embossed plaid pattern.

Therefore, the rightward long concave portion 3021a is also inclined to the right direction with respect to the traveling direction W, and the leftward long concave portion 3021b is inclined to the left direction. Therefore, as the embossing roller travels in the traveling direction W, the distance between the rightward long concave portion 3021a and the leftward long concave portion 3021b which are adjacent to the intersecting portion 3023 is gradually shortened.

Here, the top sheet 14 is introduced into the recesses 3021, 3023 at the time of pressing the embossing rolls forming the recesses 3021, 3023. In particular, since the long concave portion 3021 is disposed adjacent to the left long concave portion 3021a and the left long concave portion 3021b, the top sheet 14 is introduced from the left and right at the same timing. That is, in Fig. 18, the top sheet 14 is stretched by simultaneously applying the introduction force indicated by the arrow A to the left and right. Since the shorter the distance between the adjacent rightward concave portion 3021a and the leftward concave portion 3021b, the less the margin of the top sheet 14 relative to the drawing force A is stretched, the top sheet 14 gradually becomes a highly tight state.

For example, if it is assumed that a grid of the same size is produced, a pattern in which the rightward long recessed portion 3021a and the leftwardly elongated recessed portion 3021b are joined at the intersection of the lattices without forming the space L1 is formed, and the rightward long concave portion is formed near the corner of the lattice. The 3021a is disposed in close proximity to the left long recess 3021b. In this way, in the vicinity of the intersection, the density of the absorber 3013 itself is relatively high and is in a relatively hard state, and in addition, the top sheet 14 is highly tight due to the introduction force of the elongated recesses 3021a, 3021b. The absorber 3013 is in contact. In the main absorption region 25 near the intersection, the SAP in the absorbent body 3013 abuts against the top sheet 14, and becomes a rough feeling. This is not good because it is irritating to the wearer's skin.

Therefore, in the present embodiment, the top sheet 14 is not placed in a state of being highly tight by not compressing the distance between the adjacent long recesses 3021 so as not to reach the vicinity of the intersection 3026 of the specific distance T. That is, the compression of the absorbent body 3013 and the engagement of the absorbent body 3013 with the top sheet 14 are limited to a range in which the top sheet 14 in the main absorbent region 3025 can be maintained in a margined state. Thereby, the feeling of the unevenness due to SAP and the corner portion of the lattice are suppressed from being hardened.

In other words, as shown in FIG. 18 and FIG. 19, the shortest distance between the rightward long concave portion 3021a and the left long concave portion 3021b is T, and the long concave portion 3021 is formed only in a portion where the distance between the two is longer than T. . Therefore, the top sheet 14 is fixed in a soft state, and a hard touch can be avoided. In the figure, although the distance T is referred to as a direction orthogonal to the traveling direction W, the direction parallel to the traveling direction W is also caused by the problem that the corner portion is hardened, so it is preferable to equally separate the fixed distance. As described above, each of the long recessed portions 3021 is formed. In the present embodiment, since the lengths of the rightward long recessed portion 3021a and the leftwardly elongated recessed portion 3021b are made equal, and the interval L1 is also made equal, the distance parallel to the traveling direction W is also equally spaced. Each of the long recesses 3021 is formed above T.

In other words, when the embossed pattern is determined, the distance between the adjacent concave portions becomes T in a direction parallel to the diagonal line of the quadrilateral (division) formed by the first compressed row 3022a and the second compressed row 3022b. In the above manner, the arrangement interval of each of the long recessed portions 3021 is determined.

Further, as described above, since the introduction force A acts strongly against the direction orthogonal to the traveling direction W of the embossing roller, it can be said that the diagonal is parallel with respect to the traveling direction W of the embossing roller, even if adjacent The distance between the recesses is slightly shorter than T, and the influence is also small.

For example, in the case where the thickness of the absorber is 8 mm and the depth Q2 of the first recess is 6 mm, the T is about 7 mm. It also varies depending on the relationship between the amount of SAP in the absorbent body 3013 and the amount of pulp fibers, or the thickness of the top sheet 14. An important point in the present invention is that when an embossed pattern having a diagonally-shaped lattice-like component is used, an embossed pattern is not formed in a portion where the interval between adjacent concave portions is narrowed.

On the other hand, since the intersection of the lattices is not close to each other and the left and right sides are simultaneously pressed, the top sheet 14 is not strongly stretched. If the tension of the top sheet 14 is considered, and in the compressed row 3022, the interval in which the recess is not formed is too wide, there is a possibility that the compressed line 3022 cannot be recognized as a line, and the lattice cannot be recognized. Further, when the interval between the long recessed portions 3021 is too wide, it is difficult for the absorber 3013 to exhibit an effect of tending to follow the movement of the body and to bend obliquely. Therefore, the concave portion 3023 is provided without affecting the intersection of the tension of the top sheet 14, and the visibility of the lattice is improved, thereby further enhancing the visual effect of the embossed pattern. Further, it is not necessary to make the corner of the grid square hard, and the absorber 3013 is a person who can easily follow the movement of the body and bend.

As described above, in the present embodiment, the shortest distance between the adjacent concave portions 3021 does not become less than T. In other words, the embossing pattern in which the concave portion 3021 is separated by a distance T or more, that is, the embossed pattern in which the embossing process is not performed in the vicinity of the intersection 3022 of the lattice, prevents the skin contact feeling on the skin contact surface from becoming hard. Moreover, since the corner of the lattice is in a soft state similar to the main absorption region 3025, even if an oblique plaque pattern is used, the corner of the lattice square does not become a hard and sharp hand, and the wearer can be softened. Skin feels.

Further, at the intersection of the first compressed row 3022a and the second compressed row 3022b, by providing the short concave portion 3023, the intersection of the lattices (the vertices of the squares) is made clear, thereby improving the aesthetics and design. Further, the obliquely extending compressed row 3022 is not mistaken for wrinkles caused by defective manufacturing, or irregularly arranged recesses or the like. Moreover, the inclination direction of the absorber 3013 which follows the activity of the body is also easily deformed.

Further, in the present embodiment, the embossing process is described for the use of the embossing roller, but the method is not limited to this method, and the embossed plate of the size of the diaper may be pressed in the size of the diaper. Embossed and so on.

Next, the details of the embossed pattern formed by embossing will be described.

As shown in FIG. 18, the embossed pattern of the present embodiment is such that the rightward long concave portion 3021a and the short concave portion 3023 located before and after the longitudinal direction of the rightward long concave portion 3021a are spaced apart from each other by L1. The first compressed row 3022a is formed. Similarly, the left long concave portion 3021b is formed with a gap L1 from the short concave portion 3023 to form a second compressed row 3022b. In the above, the first compressed row 3022a is arranged in parallel with the plurality of rows at intervals S1, and the second compressed row 3022b is arranged in parallel with the plurality of rows at intervals S2. Further, as shown in the figure, the first compressed row 3022a and the second compressed row 3022b form an embossed pattern having a diagonal lattice shape as viewed from the figure.

The lengths S1 and S2 of one side of the lattice of the present embodiment are equal to 27.0 mm. The interval between the lattices is preferably 13.0 mm or more and 54.0 mm or less. Further, the length U of the long recessed portion 3021 in the longitudinal direction is 19.0 mm, and the length U is preferably 55% to 85% of the lengths S1 and S2 of one side of the lattice. Further, the width V of the long recessed portion 3021 is 3.0 mm. The width V is preferably 2.0 mm or more and 4.0 mm or less. Further, the width V1 of the short concave portion 3023 is the same as or narrower than the width V of the long concave portion 21. In the present embodiment, the width V1 is 2.0 mm. The width V1 is preferably 1.0 mm or more and 4.0 mm or less. Further, the interval L1 between the recesses 3021 and 3023 is 4.4 mm. The interval L1 is preferably 2.0 mm or more and 6.0 mm or less. With this relationship, the portion where the distance T between the adjacent long concave portions 3021 is less than 6.0 mm is in a state of no recess except for the intersection.

Further, in the present embodiment, the thickness of the absorber 3013 and the top sheet 14 before the embossing is 8.0 mm, and as shown in Fig. 8, the depth Q1 of the deepest portion of the long recess 3021 is 7.8 mm. Further, the depth Q2 of the second deep portion is 7.5 mm. Further, the thickness Q4 of the uncompressed region was 8.0 mm.

Further, the thickness of the absorber 3013 and the top sheet 14 before the embossing is preferably 5.0 mm to 20.0 mm. Further, the maximum depth Q1 of the portion compressed by the concave portion 3021 is preferably 3.0 mm to 8.0 mm. Further, the difference Q3 from the second deep portion is preferably 0.1 mm to 0.5 mm. Further, the thickness (height) Q4 of the uncompressed region is preferably 5.0 mm to 20.0 mm.

By forming each of the concave portions 3021 and 3023 at such a depth and space, even if the body weight is applied, the thinned portion can be maintained, and the skin contact surface at the lower portion of the diaper can maintain the softness. Soft skin feels. Therefore, by embossing the embossed pattern in a lattice shape, it is possible to suppress deformation of the diaper due to various movements of the leg, and to make the skin feel soft, and to suppress the irritation to the skin as much as possible.

Further, in the present embodiment, the long recessed portion 3021 is defined by the elongated elliptical long recessed portion first portion 3211. However, the present invention is not limited thereto, and a plurality of dots or parallelograms may be intermittently arranged. The concave portion is formed to form a compressed row in a diagonal lattice shape. In other words, in the present embodiment, it is important that the vicinity of the intersection portion 3026 where the concave portion is not formed is provided only in a specific size, and the shape of the concave portion defined by the long concave portion 21 constituting each side of the lattice is not limited to this embodiment. form. The same effect can be obtained by arranging the above plurality of points and the like. In this case, the concave portion is also disposed such that the distance between the adjacent concave portions in the direction parallel to the diagonal of the square of the lattice is T or more.

Further, in the present embodiment, one or more of the long recesses 3021 and the one long recesses 3021 may be formed by shortening the length in the longitudinal direction. In addition, the arrangement of the second recessed portion 3212 of the long recessed portion in the first recessed portion 3211 is distributed in the outer side in the width direction in a staggered manner. However, the present invention is not limited thereto, and may be any one of a configuration in which the center is arranged in a line. . Further, the shape of the second recessed portion 3212 is not limited to the shape shown in the present embodiment, and may have various shapes such as a quadrangle, an ellipse, and a triangle.

Further, in the present embodiment, the short concave portion is formed in a star shape with four apexes, but the present invention is not limited thereto, and may be a quadrangle or a circle. That is, any shape can be used as long as it is a shape suitable for recognizing the apex (corner) of the square of the lattice.

5. Fourth Embodiment of Absorbent Article

An embodiment of the absorbent article of the present invention will be described in detail with reference to Figs. 22 to 29 . The fourth embodiment of the present invention can also be applied to the diaper-type diaper shown in Fig. 1 of the first embodiment, and the same configuration as that of the first to third embodiments is shown in Figs. 22 to 29 . The corresponding parts are marked with the same symbol.

Fig. 22 is a plan view of the diaper-type diaper of the present embodiment as seen from the skin contact surface side The figure corresponds to the state in which the diaper shown in Fig. 1 is unfolded. Fig. 23 is a broken sectional view taken along line XXIII-XXIII of Fig. 22, and Fig. 24 is an exploded perspective view showing the diaper diaper shown in Fig. 22.

Further, Fig. 25 is a partial plan view showing a portion where the absorbent body 4013 and the top sheet 14 of the present embodiment are located from the side of the top sheet 14, and Fig. 26 is a view showing an oblique pattern of the embossed pattern in Fig. 25. Modeal partial top view.

The absorber 4013 of the present embodiment is basically basically made of the same material as the first and second embodiments. Further, the shape of the absorber 4013 is similar to that of the absorber 3013 of the third embodiment, and is divided into three parts of the front body piece portion M1, the crotch portion M2, and the back body piece portion M3, and is surrounded by the armpit portion M2. The left and right pair of leg-opening portions 10L of the thigh portions of the two legs are formed with one of the arc-shaped notch portions 4013a.

Further, as shown in FIG. 25 and FIG. 26, the diaper diaper 10 has a compression portion forming region (embossed pattern forming region) which is compressed by the regular embossing process from the surface of the top sheet 14 toward the absorber 4013. N1. A plurality of concave portions 4021 formed by compression are formed in the compressed portion forming region N1, and a plurality of line compressed rows 4022 which are patterned in a diagonal lattice shape by the arrangement of the concave portions are formed. The concave portion 4021 of the present embodiment is inclined with respect to the imaginary line P along the central axis of the wearer's body when the diaper is worn. Specifically, the concave portion 4021 is provided with a long groove-shaped rightward concave portion 4021a that is inclined at a specific angle α toward the first direction, that is, in the right direction in the drawing, with respect to the imaginary line P, and is oriented to the second direction at a specific angle β, that is, left in the figure. The leftward recessed portion 4021b having a long groove shape which is inclined in the direction (hereinafter, when it is not necessary to distinguish the same, it is collectively referred to by reference numeral 4021). Further, the concave portions 4021 which are inclined in the same direction are arranged so as to form a row at a predetermined interval L1, and an embossed pattern having a lattice shape in which each of them is obliquely extended is formed. In other words, each of the recessed portions 4021 of the present embodiment corresponds to the thinned portion defined by the present invention, and corresponds to the elongated recessed portion 3021 of the third embodiment. Although not shown in the drawing, the concave portion 4021 is formed by collectively compressing the core material and the absorbent body 13 from the surface of the top sheet 14.

Further, as shown in FIG. 25, the embossed pattern is not formed at both ends of the absorber 4013. because Thus, the absorber 13 is a compression portion non-formation region (embossed pattern non-formation region) N2 located on both sides of the compression portion formation region (emboss pattern formation region) N1. This is to prevent the body fluid from leaking from the leg-opening portion 10L along the embossed pattern.

As shown in FIG. 25, the row in which the rightward concave portion 4021a is arranged is referred to as a first compressed row 4022a, and the row in which the left concave portion 4021a is arranged is referred to as a second compressed row 4022b (hereinafter, when it is not necessary to distinguish the same, the symbol 4022 is used) Unified reference). These compression lines 4022 are linearly inclined with respect to the imaginary line P at the same angle as the inclination angle of the concave portion 4021. The plurality of rows of first compressed rows 4022a are arranged in parallel with each other at an interval S1. Further, the plurality of rows of the second compressed rows 4022b are arranged in parallel with each other at an interval S2. In this manner, by arranging the plurality of rows of the first compressed row 4022a and the second compressed row 4022b, an embossed pattern having an oblique lattice shape is formed. In the present embodiment, the intervals S1 and S2 are also set to the same value, but they may be different values.

Further, as can be understood from Fig. 25, each of the concave portions 4021 is a length that can form a square based on the lattice. Here, the length of the recess 4021 is shorter than the previous intervals S1, S2. That is, as described above, the plurality of concave portions 4021 are formed by arranging the specific interval L1 to form the compressed row 4022, but the length of the concave portion and the lattice are determined so that the concave portion is not located at the intersection portion 4023 of the lattice. Therefore, the rightward concave portion 4021a and the leftward concave portion 4021a do not overlap, and the top sheet 14 and the absorbent body 13 which are formed by the concave portion 4021 in the intersecting region 4023 are uncompressed. Similarly, even in the main absorption region 4025 which is an inner region of the square formed by the respective recess portions 4021, the top sheet 14 and the absorber 4013 are uncompressed. In other words, in the present embodiment, the region that does not overlap the rightward concave portion 4021a and the leftward concave portion 4021a corresponding to the thinned portion is defined as the intersection region 4023, and the intersection region 4023 becomes the uncompressed region.

Fig. 27 is a schematic enlarged view of the vicinity of the intersection of the compressed lines in Fig. 26, and Fig. 28 is a view showing a section based on the line XXVIII-XXVIII of Fig. 7. Figure 29 is a view showing a section based on the line XXIX-XXIX of Figure 7;

As shown in FIGS. 27 and 28, the recess 4021 is formed by a first recess 4211 forming its outer shape. The second recessed portion 4212 is disposed in a circular shape which is disposed in the first recessed portion 4211 intermittently and further recessed further than the first recessed portion 4211. As shown in FIG. 27, the first recessed portion 4211 is a shorter length U and a shorter width V than the lengths S1 and S2 of the side of the lattice. Specifically, the two ends have a circular arc shape. Further, inside the first recessed portion 4211, the circular second recessed portions 4212 are arranged at a predetermined interval with respect to the central axis in the longitudinal direction. The second recess 4212 is recessed deeper in the thickness direction of the absorber 4013 than the first recess 4211.

As shown in FIG. 28, in the recessed portion 4021, the second recessed portion 4212 is located at the deepest point, and the first recessed portion 4211 is located slightly raised from the bottom of the second recessed portion 4212. The depth to the deepest position of the concave portion 4021, that is, the depth of the bottom of the second concave portion 4212 is Q1, and the depth to the bottom of the first concave portion 4211 is Q2, and the difference Q2 from Q1, that is, Q3, and the uncompressed region are subtracted from Q1. The relationship between the thickness of the absorbent body 4013 and the top sheet 14 is the same as that of the third embodiment. In addition, the embossing process for forming the concave portion 4021 can be performed in the same manner as in the third embodiment, and the same effect as the case where the long concave portion 3021 is formed as in the third embodiment can be obtained.

Further, in FIG. 27, a region indicated by a broken line surrounding the periphery of the concave portion 4021 is referred to as a quasi-compression region 4024. That is, in order to form the concave portion 4021, the top sheet 14 and the absorbent body 4013 are strongly compressed, whereby the top sheet 14 and the absorbent body 4013 around the concave portion 4021 are compressed by being stretched. Therefore, the quasi-compression region 4024 is a region in which the absorber 13 is indirectly compressed, compared to an uncompressed region such as the intersection region 4023 or the main absorption region 4025.

As shown in Fig. 28, in the absorber 4013, the bottom surface portion of the second recessed portion 4212 is the high-density portion 4013A having the highest density of the absorber. Further, the uncompressed region such as the main absorption region 4025 is the low density portion 4013D having the lowest absorbent density. Further, the bottom surface portion of the first recess 4211 is the medium density portion 4013B. The quasi-compression region 4024 is a density changing portion 4013C whose density gradually decreases toward the uncompressed region.

Here, the absorbent body 4013 mainly contains SAP and pulp as described above, and the density is mainly related to the density of the pulp fibers. Therefore, on the one hand, the high density portion 4013A is pressed by the pulp In the state where the gap between the pulps is small, the low-density portion 4013D is in a state in which the gap between the pulps is larger than the high-density portion 4013A.

Further, since the concave portion 4021 is formed by compression-bonding the top sheet 14 of the synthetic fiber together with the absorbent member 4013 whose main component is pulp, the bottom surface of the concave portion 4021 is formed into a film shape and is considered to be substantially non-absorbent. Therefore, the body fluid discharged to the concave portion 4021 is absorbed by the density changing portion 4013C which is the side wall of the concave portion 21, and is transported to the main absorption region 4025.

Next, in the present embodiment, the concave portion 4021 is not provided in the intersection region 4023 in the oblique lattice-shaped embossed pattern. That is, the concave portion 4021 as the thinned portion has a boundary at the intersection region 4023. As in the third embodiment described above, the concave portion 4021 is formed by pressing and pressing the embossing roller having the mold having the control concave portion 4021 formed on the surface thereof. As shown in Fig. 26, when the embossing roller rotates in one direction and faces in the direction of the arrow W, all the portions of the concave portion 4021 arranged in the direction orthogonal to the traveling direction W of the embossing roller are simultaneously pressed. In the present embodiment, the size of the embossing roller is determined such that the circumference of the embossing roller corresponds to the length of the absorbent body 4013 in the longitudinal direction, but the invention is not limited thereto.

Also in the present embodiment, as in the third embodiment, the traveling direction W of the embossing roller is parallel to the direction of the previous imaginary line P when the diaper 10 is completed. In the third embodiment, as described above, after the top sheet 14 and the absorber 13 are collectively compressed by an embossing roll, the other sheets required are laminated, etc., and cut into diapers. 10 size. Since the cutting is performed over the length of the front piece, the underarm, and the back piece of the diaper 10, the traveling direction W of the embossing roll can be made parallel to the imaginary line P to form an imaginary line P. An oblique embossed plaid pattern. Further, the interval L1 between the rightward concave portion 4021a and the leftward concave portion 4021b formed by this, the shortest distance T, and the inclination with respect to the traveling direction W are also the same as those described for the long concave portion 3021 in the third embodiment. Therefore, the description is omitted.

In this embodiment, the shortest distance between adjacent recesses 4021 does not fall below T. In other words, the embossed pattern, that is, the lattice, which is disposed by separating the concave portion 4021 by a distance T or more The embossed pattern of embossing is not applied near the intersection, and the touch of the skin is prevented from becoming harder. Further, since the corner of the lattice is as soft as the main absorption region 4025, even if an oblique embossed pattern is used, the corner of the lattice does not become a firm and sharp hand, so that the wearer can be softened. sense. Therefore, the intersection region 4023 between the first compressed row 4022a and the second compressed row 4022b is an uncompressed region in which the concave portion 4021 is not provided, and the corner of the lattice does not become a hard sharp, and the absorber of the intersecting region 4023 The thickness and height of the 4013 are the same as those of the main absorption region 4025. Therefore, even if an oblique embossed pattern is formed, the skin abutting surface of the diaper 10 gives the wearer a soft feeling of the whole skin, and the corner portion of the lattice does not irritate the skin.

Further, in the present embodiment, the embossing is not limited to the use of an embossing roll, and the embossing plate or the like may be used to press the embossing unit in the size of the diaper by the embossed plate having the size of the diaper. Further, the embossing pattern formed by the embossing is substantially the same as that described in the third embodiment with respect to the long recess 3021 or the compressed rows 3021a and 3021b.

In the present embodiment, the lengths S1 and S2 of one side of the lattice are equal to 27.0 mm. The interval between the lattices is preferably 13.0 mm or more and 54.0 mm or less. Further, the length U of the concave portion 4021 in the longitudinal direction is preferably about 55% to about 90% of the lengths S1 and S2 of one side of the lattice. In the present embodiment, the length U is 19.0 mm. Further, the width V of the concave portion 4021 is 3.0 mm. The width V is preferably 2.0 mm or more and 4.0 mm or less. Moreover, the interval L1 between the recesses 4021 is 8.8 mm. The interval L1 is preferably 4.0 mm or more and 12.0 mm or less. With this relationship, the portion where the distance T between the adjacent concave portions 21 is less than 6.0 mm becomes a state without a concave portion.

Further, in the present embodiment, the thickness of the absorber 4013 and the top sheet 14 before the embossing is 8.0 mm, and as shown in Fig. 28, the depth Q1 of the deepest portion of the recess 21 is 7.8 mm. Further, the depth Q2 of the second deep portion is 7.5 mm. Further, the thickness Q4 of the uncompressed region was 8.0 mm.

Furthermore, the thickness of the absorber 4013 and the top sheet 14 is included before the embossing process. The difference between the maximum depth Q1 of the portion compressed by the concave portion 4021 and the portion Q3 of the portion deeper than the second portion can be selected in the same range as in the third embodiment, whereby the same effect can be obtained.

In addition, the shape or arrangement of the concave portion 4021, the first concave portion 4211, and the second concave portion 4212 of the present embodiment can be appropriately determined as described in the third embodiment with respect to the long concave portion 3021.

6. Embodiment 5 of the absorbent article, and an embodiment of the manufacturing apparatus and the manufacturing method thereof

A fifth embodiment of the absorbent article of the present invention, a manufacturing apparatus therefor, and a manufacturing method will be described in detail with reference to Figs. 1 to 14 .

In the present embodiment, the "concave portion" is referred to as a thinned portion formed by compressing the absorber by embossing. The portion in which the concave portion is formed in the absorber has high compression and high density as compared with the other portion. Further, when the density of the portion where the concave portion is formed is the same as the other portion, the thickness of the portion where the concave portion is formed is also the same as the other portion.

The absorbent article of the present embodiment is configured such that it is formed in a region where a plurality of concave portions on the side of the top sheet of the absorbent body intersect, and the back sheet side of the region is raised. In other words, the concave portion of the present embodiment has a configuration in which the lattices are uniform. However, the concave portion has a raised portion on the side of the back sheet, and the intersection portion of the top sheet side is recessed and the thinned portion is defined by the intersection portion. . According to this configuration, the rigidity is reduced in the vicinity of the region where the plurality of concave portions intersect, and as a result, it is easy to bend in the region, and the conformability can be improved.

Furthermore, when the surface of the absorber on the top sheet side is used as a reference, the depth of the recess of the intersection region can be formed in a manner consistent with the depth of the concave portion of the thinned portion (ie, a groove having a uniform depth along the lattice). , can also be formed in an inconsistent manner (for example, in a shallow manner).

First, an embodiment in which the present invention is applied to a disposable unfolded diaper (hereinafter, "expanded diaper" or simply "diaper" in the present embodiment) will be described below.

<constitution>

Fig. 30 is a perspective view showing the appearance of an example of a diaper according to an embodiment of the present invention as seen from the front side. The diaper 5010 of the present embodiment is an unfolded diaper, and has a front body region 5010F, a back body region 5010R, and a crotch region 5010C that connects the front body region 5010F and the back body region 5010R. Further, a waist opening portion 5010W that surrounds the waist of the wearer in the front body region 5010F and the back body region 5010R at the time of wearing is formed. Similarly, a pair of right and left leg-opening portions 5010L of the calf portion in which the lower portion of the front body region 5010F and the rear body region 5010R and the underarm region 5010C surround the legs of the wearer are formed.

The front body region 5010F is located on the ventral side of the wearer when worn, and the back body region 5010R is located on the back side of the wearer. Further, the underarm region 5010C covers the underarm of the wearer when worn, and the wearer's legs pass through the pair of left and right leg-opening portions 5010L. Therefore, the leg-opening portion 5010L is located at any position from the root portion of the wearer's legs to the vicinity of the calf.

The imaginary line P is extended from the ventral side toward the back side through the crotch portion in the central portion of the diaper. Specifically, the imaginary line P is, for example, such that the waist side of the unfolded diaper is defined as the upper side and the lower side of the underarm is defined as the lower side, and extends along the surface of the diaper in the up and down direction, and also via the underarm portion and the back side. Extend in the up and down direction.

The left and right end edges of the body sheet region 5010R on the outer side of the cover sheet 5011 on the outer side of the unfolded diaper 5010 are then joined to the left and right end edges of the front body panel region 5010F when worn, and are connected to form legs. A pair of left and right fastening tapes 5010A are formed around the opening 5010L. The adhesive tape 5010A is attached to the cover sheet 5011 next to the front sheet region 10F before the patch sheet 5010B can be peeled off.

Fig. 31 is a schematic exploded perspective view of the unfolded diaper 10 shown in Fig. 30, and Fig. 32 is a schematic plan view of the diaper 5010 in an extended state according to an embodiment of the present invention viewed from the side of the top sheet 14. The absorbent body 5013 of Fig. 31 and the unfolded diaper 5010 of Fig. 32 each show a state of partial breakage for convenience of explanation.

As shown in Fig. 31, the unfolded diaper 5010 of the present embodiment has a laminated structure in which a cover sheet 5011 formed of a thin non-woven fabric in order to obtain a good hand is superposed on the outer layer, and has a liquid-impermeable property. The bottom sheet (back sheet) 5012, the elongated absorbent body 5013, the liquid permeable top sheet (front sheet) 5014, and the water-repellent sheet member constitute one of the three-dimensional wrinkles (side sheets) Material) 5015.

On the left and right sides of the crotch region 5010C of the cover sheet 5011, a pair of notch portions 5011N which are one of the leg-opening portions 5010L are formed. Between the cover sheet 5011 and the pair of three-dimensional gathers 5015, one of the leg gather wrinkles is formed to extend the rubber line 5016 in an extended state.

The back sheet 5012 is bonded to the cover sheet 5011, and the absorber 5013 is disposed between the back sheet 5012 and the top sheet 5014, and the top sheet 5014 is joined to the back sheet 5012 via the absorber 5013. Further, in an area corresponding to the upper end portion of the back sheet region 5010R among the back sheet members 5012, an elastic sheet extending in the width direction of the back sheet member 5012 and imparting a moderate wearing feeling to the wearer is bonded to the wearer. Material 5010D.

The absorbent body 5013 of the present embodiment, which is located under the top sheet 5014, is covered with a cushion member (core material) 5018 such as a tissue or a nonwoven fabric to cover the cushion body mainly comprising the absorbent body 5017 of the pulp and SAP. In the present embodiment, the absorber main body 5017 is made of SAP, but in the present invention, it may be a case where SAP is not included. The seam formed by coating the absorbent body 5017 by the covering member 5018 is formed, for example, as shown in FIG. 31, on the upper surface of the absorbent body 5013 and extending in the longitudinal direction. The absorbent body 5013 of the present embodiment has an elongated shape so as to extend over the front body piece, the underarm, and the back body piece. Here, when the front body portion is set to the front-rear (up and down) direction, and the direction orthogonal thereto is the left-right direction, the absorber 5013 of the present embodiment has different lengths from front to back (up and down). The rectangle is (in FIGS. 31 and 32, the length of the front and rear (upper and lower) is longer than the length of the left and right). Further, the shape of the absorber 5013 of the present embodiment is not limited thereto, and includes, for example, a square having a length of the front and rear (up and down) and a substantially square, and an angle of the front and rear (upper and lower) ends is cut into a circle. Shapes, ovals, rounds, etc. extending in front and rear (up and down). Further, in the crotch portion of the absorber 5013, one of the arc-shaped notch portions may be formed so as to correspond to the pair of leg-opening portions 5010L. In the present embodiment, as shown in FIG. 32, a plurality of concave portions 5020 are continuously formed on the surface of the absorber 5013 and arranged in an oblique lattice shape. By continuously forming the recess 5020, air can pass through the ventral side or the back side, thereby ensuring gas permeability. Further, in the present embodiment, in the region where the plurality of concave portions 5020 intersect, the absorbing body 5013 is provided with a ridge portion so as to be swelled on the side of the back sheet 5012 of the region (see reference numeral 5021 in Fig. 33 below). The recesses 5020 and the ridges are formed by, for example, sandwiching the compression absorbers 5013 by two rollers that rotate (see FIG. 37 below).

The pair of three-dimensional gathers 5015 are provided along the longitudinal direction of the absorber 5013 and extend along the longitudinal direction of the absorber 5013, and one side edge portion has a substantially linear shape, and the other side edge portion is in the side edge portion. A notch portion 5015N is formed in the vicinity of the lower side. The inner portion of the pair of three-dimensional gathers 5015 is in a non-joined state with respect to the top sheet 5014, and the three-dimensional gathers 5015 include free ends at the side edges of the substantially straight shape. At the free end of the three-dimensional gathers 5015, as shown in Fig. 32, a rubber thread 5019 which is an elastic member that exerts a tensile force is disposed in an extended state along the longitudinal direction of the absorbent body 5013. The pair of three-dimensional gathers 5015 can be erected along the both side edges of the absorber 5013 in the worn state by the rubber thread 5019.

<recess and ridge>

Figure 33 is a schematic view showing a cross section taken along line XXXIII-XXXIII of Figure 32. The section line of the XXXIII-XXXIII direction is drawn in the center of the area where the plurality of recesses 5020 intersect in FIG. That is, the two recesses 5020 shown in FIG. 33 mean the area where the plurality of recesses 5020 intersect. Figure 34 is a schematic view showing a cross section taken along the line XXXIV-XXXIV in Figure 32. The section line of the XXXIV-XXXIV direction is drawn in FIG. 32 by the position where the area intersected by the plurality of recesses 5020 deviates. That is, the four recesses 5020 shown in FIG. 34 are those in which the plurality of recesses 5020 do not intersect. Fig. 35 is a schematic view showing a cross section taken along the line XXXV-XXXV in Fig. 32; Moreover, Fig. 36 is a schematic plan view of the absorber 5013 viewed from the side of the top sheet 5014 in the present embodiment. The solid line shown in FIG. 36 indicates the concave portion 5020, and a plurality of dot-shaped hatched areas indicate the raised portion 5021. The broken line shown in FIG. 36 is drawn in the longitudinal direction of the absorber 5013 so as to include the plurality of raised portions 5021, and corresponds to the "recessed portion 5041 of the second roller 5040" described in FIG. 37 described below. .

As shown in FIG. 33, a raised portion 5021 is formed at a position below the region where the plurality of concave portions 5020 intersect, and on the side of the back sheet 5012 of the absorber 5013. That is, the raised portion 5021 is formed in the region where the plurality of recesses 5020 intersect, and is formed on the side of the back sheet 5012 of the absorber 5013 corresponding to the region. In the present embodiment, the raised portion 5021 corresponds to the first concave portion 5020a or the second portion other than the intersection region of the absorbent sheet 5013 corresponding to the region where the first concave portion 5020a and the second concave portion 5020b intersect. The side of the back sheet 5012 of the absorber 5013 of the recess 5020b is formed in a more bulging manner. Here, the side of the back sheet 5012 of the absorber 5013 corresponding to the first recess 5020a or the second recess 5020b other than the intersection area is an absorber 5013 corresponding to a region where the plurality of recesses 5020 do not intersect as shown in FIG. The bottom sheet 5012 side. It can be seen that the surface of the bottom sheet 5012 side of the absorbent body 5013 below the recess 5020 shown in Fig. 33 is more swelled than the surface of the bottom sheet 5012 side of the absorbent body 5013 below the recess 5020 shown in Fig. 34.

Since the ridge portion 5021 is formed by the region where the plurality of recesses 5020 intersect, the degree of compression in the portion of the absorber 5013 is small, so that the bonding of the pulp or the SAP becomes weak, and as a result, the absorber 5013 is in the plurality of recesses 5020. The area of the intersection is easily bent, and the feeling of the diaper 10 can be improved.

In the present embodiment, the bulging of the raised portion 5021 is formed so as to protrude toward the outer side of the unfolded diaper 5010 as shown in Fig. 33. However, the present invention is not limited thereto. If the raised portion 5021 is formed so as to be raised with respect to the surface corresponding to the bottom of the concave portion 5020 other than the intersecting region, the raised portion 5021 may not be formed to protrude toward the outer side of the diaper 5010. It may, for example, absorb the area corresponding to the area where the plurality of recesses 5020 do not intersect. The surface of the back surface sheet 5012 of the body 5013 is recessed inward with respect to the diaper 5010.

Further, in the present embodiment, the raised portion 5021 is formed at least in a region where the plurality of concave portions 5020 intersect. In the present invention, the ridge portion 5021 may be formed on the side of the back sheet 5012 of the absorber 5013 corresponding to the first recess 5020a or the second recess 5020b other than the intersecting region. According to this configuration, the bottom portion of the concave portion 5020 other than the region intersecting the absorbent body 5013 is softened, so that the feeling of wearing can be further improved.

The thickness of the thinnest portion including the covering member 5018 in the absorber 5013 corresponding to the bottom of the recess 5020 is preferably 0.1 mm to 1.0 mm, which is preferable for effectively exhibiting the effects of the present invention. Further, the thickness of the region of the absorber 5013 corresponding to the recess 5020 in which the raised portion 5021 is formed is preferably 0.1 mm to 1.0 mm thicker than the thickness of the thinnest portion, and the thickness is 0.2 mm to 0.4 mm to effectively exhibit the present invention. The effect is better. When this case, the pulp obtained by mixing the SAP and an absorbent body (absorbent pad) 5017 of the basis weight range of ^{170g / m 2 ~ 600g / m} 2 more appropriate, and is ^{240g / m 2 ~ 530g / m} 2 is more appropriate (The basis weight of the pulp is preferably from 80 g/m ² to 300 g/m ² and more preferably from 160 g/m ² to 240 g/m ² ).

36, on the side of the top sheet 5014 of the absorber 5013, as shown in FIG. 36, the first recess 5020a extending in the first direction is formed, and the first recess 5020a is crossed and the first direction is formed with respect to the first recess 5020a. The second recess 5020b extends in the second direction. Further, the first concave portion 5020a and the second concave portion 5020b are each formed of a plurality of thinned portions arranged in parallel with each other. Further, as shown in FIG. 36, the raised portion 5021 is formed on the side of the back sheet 5012 of the absorber 5013 corresponding to the region where the first recess 5020a and the second recess 5020b intersect, with respect to the first recess 5020a or the first portion. 2 The surface of the bottom of the recess 5020b is formed in a more bulging manner.

In the present embodiment, the concave portion 5020 is formed in a strip shape along the longitudinal direction of the absorbent body 5013 (upward and downward direction in Fig. 36), and is not formed at the end in the width direction (left-right direction in Fig. 36) of the absorbent body 13. unit. A region in which the concave portion 5020 is formed in the absorber 13 is referred to as a concave portion forming region N1, and a region in which both ends of the absorbent body 5013 in the width direction of the concave portion 5020 are not formed is referred to as a concave portion non-formation region N2. In this embodiment, the concave portion is not formed. The area N2, but the present invention is not limited to this form, and of course, the recess 5020 may be provided to the end of the absorber 5013. Therefore, the present invention may be configured not to provide the recess non-formation region N2. Further, the present invention allows the concave portion 5020 to be formed not to the end portion of the longitudinal direction of the absorbent body 5013 (the upper and lower directions in FIG. 36) or to be formed to the end portion. In the case of forming to the end portion, the gas permeability and the suffocation can be improved.

In the present embodiment, the recess 5020 is extended from the first recess 5020a that extends obliquely toward one side (toward the right side in FIG. 36) in the width direction of the absorber 5013, and extends to the other side (toward the left side in FIG. 36). The second recess 5020b is configured. The position of the imaginary line P on the absorber 5013 is extended from the upper end of the front body portion toward the lower end of the back body portion. Specifically, as shown in FIG. 36, when the absorber 5013 has an elongated shape, it is extended in the longitudinal direction. The recess 5020 extends obliquely with respect to the imaginary line P. In other words, the first concave portion 5020a is inclined at one angle by one angle with respect to the direction along the side of the imaginary line P, for example, the longitudinal direction, and the second concave portion 5020b is inclined at the angle β toward the other side. The angle α and the angle β may be the same or different. Further, in Fig. 36, the plurality of first recesses 5020a are inclined at the same angle and arranged at regular intervals. In other words, each of the first recesses 5020a is arranged in parallel at a fixed interval. However, the present invention is not limited thereto, and the interval between the recesses 5020 is not fixed, or the inclination angles of the recesses 5020 are different. The second recess 5020b is also the same.

Further, in the present embodiment, as shown in Fig. 36, the raised portion 5021 has at least a pair of parallel contours, and the plurality of raised portions 5021 are aligned in an oblique lattice and are formed in parallel with each other. Further, by having the ridge portion 5021 having a parallel contour, the absorber 5013 can be easily bent at the contour portion. Therefore, by determining the contour shape of the raised portion 5021, the meandering portion of the absorbent body 5013 can be arbitrarily set.

According to the configuration of the diaper 5010 of the present embodiment, the flexibility is improved in the region where the plurality of concave portions intersect, and the absorbent body 5013 is easily bent in the plurality of concave portions, so that the adaptability of the diaper 5010 can be improved.

Figure 37 is a view showing an embodiment of the present invention for clamping a compression absorber with two rolls FIG. 38A and FIG. 38B are cross-sectional views when the compression absorber is sandwiched between the convex portion 5031 and the depressed portion 5041, and FIG. 38A is in the MD direction (traveling direction), and FIG. 38B is in the CD direction (width direction). The above. The cross-sections of FIGS. 38A and 38B are cut so as to pass through the central portion of the region where the plurality of recesses 5020 intersect. That is, the recesses 5020 shown in FIGS. 38A and 38B respectively indicate the areas where the plurality of recesses 5020 intersect.

The manufacturing apparatus 5100 of the diaper 5010 of the present embodiment is configured to include a first roller (first rotating member) 5030 and a second roller (second rotating member) 5040 that rotates together with the first roller 5030. The first roller 5030 has a peripheral surface portion on which the convex portion 5031 is formed, and abuts against the surface of the top sheet 5014 of the absorber 5013. The second roller 5040 has a peripheral surface portion on which the recessed portion 5041 is formed, and abuts against the surface of the bottom sheet 5012 of the absorber 5013. In other words, the absorber 5013 is formed by the first roller 5030 and the second roller 5040 rotating together and sandwiched between the rollers to form an embossed pattern.

The convex portion 5031 includes a first convex portion 5031a configured to form the first concave portion 5020a, and extending in a third direction corresponding to the first direction (the direction in which the first concave portion 5020a is formed in FIG. 36); And the second convex portion 5031b is configured to form the second concave portion 5020b, and is in a second direction different from the third direction in a state of intersecting with the first convex portion 5031a (shown in FIG. 36). The fourth direction in which the second recess 5020b is formed extends in the fourth direction.

The recessed portion 5041 is disposed in the second roller 5040 at a position corresponding to a region where the first convex portion 5031a and the second convex portion 5031b intersect. In the present embodiment, the depressed portion 5041 is formed by a plurality of recesses arranged in parallel with each other. Therefore, since the recessed portion 5041 has a simple structure, it can be easily formed on the second roller 5040.

In order to effectively exhibit the effect of the present invention, in the relationship between the convex portion 5031 of the first roller 5030 and the depressed portion 5041 of the second roller 5040, the height (thickness) of the convex portion 5031 in the radial direction of the first roller 5030 is preferably It is 2 mm to 20 mm, and more preferably 5 mm to 10 mm. Further, the depth of the depressed portion 5041 in the radial direction of the second roller 5040 is preferably 0.05 mm to 5 mm, more preferably 0.1 mm to 0.5 mm.

The diaper 5010 of the present embodiment is produced, for example, by the following manufacturing method or a manufacturing apparatus for carrying out the method.

First, the absorbent body 5017 composed of pulp and SAP is coated by the covering member 5018 to produce a continuous cushion-shaped absorbent body 5013.

Then, as shown in FIG. 37, the first roller 5030 rotates in the B direction and the second roller 5040 rotates in the C direction, and the continuous absorber 5013 that flows from the upstream direction in the MD direction in the A direction is sandwiched, and the continuous absorber 5013 is continuous. The absorber 5013 is subjected to embossing. By the embossing, the concave portion 5020 and the raised portion 5021 are formed in the continuous absorbent body 5013. Specifically, the first roll 5030 compresses the side of the top sheet 5014 of the continuous absorbent body 5013 so that the first recess 5020a and the second recess 5020b are formed, and at the same time, by the second roll 5040 The embossed portion 5021 is formed on the side of the back sheet 5012 of the absorber 5013 corresponding to the region where the first recess 5020a and the second recess 5020b intersect, and the back sheet 5012 side of the continuous absorber 5013 is deformed. In other words, the intersection of the lattice line, that is, the recess 5020, allows the absorber 5013 to be deformed into the recess 5041 of the second roller 5040, so that compression does not occur even if it is pressed from the first roller 5030 (that is, it does not become high density), or Substantially no compression is produced.

Next, the continuous absorbent body 5013 after the embossing is flowed downstream of the MD direction, and cut by the cutting device for the length required for each diaper portion, and the top sheet 5014 and the bottom sheet 5012 are used. After the cover sheets 5011 and the like are joined, the diaper 10 is manufactured.

In the present embodiment, the concave portion 5020 and the raised portion 5021 are formed by compressing the absorbent main body 5017 and the covering member 5018. However, the present invention is not limited thereto. For example, the absorbent body 5017, the covering member 5018 (that is, the absorbent body 5013) and the top sheet 5014 may be laminated (see FIG. 39 below) or the absorbent body 5017 may be compressed. The concave portion 5020 and the raised portion 5021 are formed. In the case where only the absorbent body 5017 is compressed, the person who does not include SAP may also be used for the absorbent body 5017.

In the case where the absorbent body 5013 is laminated with the top sheet 5014, the absorbent body 5013 which is previously separated (for example, cut) may be joined to the top sheet 5014. The author implements compression. Fig. 39 is a schematic cross-sectional view showing the MD direction in the case where the compression absorber 5013 and the top sheet 5014 are sandwiched by two rolls in another embodiment of the present invention. The top sheet 5014 is continuous as shown in FIG. Each of the plurality of absorbers 5013 is laminated in advance and formed into a mat shape, and is divided into a portion of one diaper 10. A plurality of absorbers 5013, as shown in FIG. 39, are vacant at regular intervals, respectively (for example, following) the continuous topsheet 5014.

As shown in FIG. 39, the plurality of absorbers 5013 and the top sheet 5014 are stacked in the direction A, and the first roll 5030 and the second roll 5040 of the manufacturing apparatus 5100 are sandwiched in the same manner as in the above embodiment. Hold compression. Thereby, the absorber 5013 is sandwiched and compressed together with the top sheet 5014, and the absorbent body 13 and the top sheet 5014 are laminated to form the concave portion 5020 and the raised portion 5021. After the compressed absorbent body 5013 and the top sheet 5014, the back sheet 5102, the cover sheet 5011 and the like are bonded and cut to a desired length to produce one diaper 10.

Further, in the present embodiment, the ridge portion 5021 is provided on the back sheet 5012 side of the absorber 5013 by the first roll 5030 and the second roll 5040, but the present invention is not limited thereto. For example, the ridge portion 5021 may be provided by suctioning the side of the back sheet 5012 of the absorber 5013.

The fifth embodiment described above can be appropriately changed or changed.

For example, the structure of the diaper of the present invention is not limited to the above-described expanded type, and may be any configuration as long as it is a diaper comprising the absorbent article as defined in the patent application. For example, the present invention can be applied even to a diaper-type diaper as shown in Fig. 1, or another urine pad.

Further, in the above-described embodiment, the plurality of concave portions 5020 are continuously formed on the surface of the absorber 5013 to form an oblique grid-like array pattern, but the invention is not limited thereto. In the present invention, as long as a plurality of recessed portions 5020 intersect with each other, for example, a plurality of recesses 5020 may be intermittently formed on the surface of the absorber 5013, and the arrangement pattern of the recesses 5020 may be formed. For example, a plurality of arrangement patterns such as a pattern of a polygon such as a triangle or a hexagon, and a pattern in which a straight line, a curved line, or a wave is juxtaposed may be used.

In the above embodiment, the top sheet 5014, the absorber 5013, the back sheet 5012, and the cover sheet 5011 are joined to the entire surface of the recess 5020 and the raised portion 5021. However, in the present invention, the sheet may be partially joined.

In the above embodiment, the heights of the first convex portion 5031a and the second convex portion 5031b are equal to each other, that is, the depths of the bottom portions of the first concave portion 5020a and the second concave portion 5020b are equal, but the present invention is not equal. The effect of softening the area where a plurality of concave portions intersect is exerted. The depth of the plurality of depressed portions 5041 or the height of the raised portions of the plurality of raised portions 5021 may be the same, and may be unequal.

Further, in the above-described embodiment, the shape or the respective patterns of the raised portion 5021, the convex portion 5031, and the depressed portion 5041 shown in FIGS. 33 to 39 are not limited, and the present invention may include the following modifications.

40A and 40B are plan views showing two examples of the convex portion pattern on the surface of the first roller 5030, wherein FIG. 40A shows a pattern in a diagonal lattice shape, and FIG. 40B shows a vertical and horizontal lattice pattern. 41A to 41D are plan views showing an example of a depressed portion pattern on the surface of the second roller 5040, wherein FIG. 41A shows a stripe pattern in the longitudinal direction (the circumferential direction of the second roller 5040), and FIG. 41B shows a pattern of the checkerboard pattern. 41C shows that the rhombuses are arranged neatly in a diagonal grid pattern, and FIG. 41D shows a pattern in which the positive directions are arranged neatly in a vertical and horizontal grid pattern. 42A to 42F are views showing an example of a ridge pattern formed on the absorber 5013, wherein Fig. 42A shows a pattern in which the butterfly shapes are arranged in an oblique lattice shape, and Fig. 42B shows a pattern in which the oblique direction is substantially continuous, Fig. 42C Fig. 42D shows a pattern in which the rhombuses are arranged neatly in a diagonal lattice pattern, Fig. 42D shows a pattern in which the positive direction is neatly arranged in a vertical and horizontal grid pattern, and Fig. 42F shows that the X shapes are arranged neatly in an oblique direction. Grid-like pattern. 40A and 40B, the convex portion 5031 is indicated by a dotted line, and the concave portion 5041 is indicated by a hatching in the form of a mesh in FIGS. 41A to 41D, and a plurality of oblique lines are formed in FIGS. 42A to 42F. Line indicates the ridge 5021. 40A, 41A, and 42A are patterns similar to those of the above embodiment. In addition, the region where the first convex portion 5031a and the second convex portion 5031b intersect with each other is disposed so as to correspond to the concave portion 5041, and the first roller 5030 and the second roller 5040 overlap each other when rotating. The rotation of the two rollers is synchronized.

The convex portion pattern formed on the surface of the first roller 5030, the depressed portion pattern formed on the surface of the second roller 5040, and the raised portion pattern formed on the absorber 13 can be various shapes and can be variously combined. For example, when the first roller 5030 having the convex portion pattern shown in FIG. 40A and the second roller 5040 having the concave portion pattern shown in FIG. 41B sandwich the absorbent body 5013, the absorbent body 5013 is formed as shown in FIG. 42B. The raised portion 5021 of the pattern is substantially obliquely crossed. The shape of the raised portion 5021 is such that, in addition to the raised portion 5021 formed in the region where the plurality of concave portions 5020 intersect, the raised portion 5021 is formed in the region where the plurality of concave portions 5020 do not intersect, and the plurality of concave portions 5021 are formed. The area where the recesses 5020 do not intersect also increases the flexibility, so that the conformability can be further improved.

When the first roller 5030 having the convex portion pattern shown in FIG. 40A and the second roller 5040 having the concave portion pattern shown in FIG. 41C sandwich the absorbent body 5013, the absorbent body 5013 is formed as shown in FIG. 42C. A raised portion 5021 of a diamond pattern is shown.

Further, when the first roller 5030 having the convex portion pattern shown in FIG. 40B and the second roller 5040 having the concave portion pattern shown in FIG. 41A sandwich the absorbent body 5013, the absorbent body 5013 is formed as shown in FIG. 42D. A raised portion 5021 of a vertical stripe pattern is shown. The shape of the raised portion 5021 is such that, in addition to the raised portion 5021 formed in the region where the plurality of concave portions 5020 intersect, the raised portion 5021 is formed in the region where the plurality of concave portions 5020 do not intersect, thereby forming the raised portion 5021. The effect illustrated in Fig. 42B.

When the first roller 5030 having the convex portion pattern shown in FIG. 40B and the second roller 5040 having the concave portion pattern shown in FIG. 41D sandwich the absorbent body 5013, the absorbent body 5013 is formed as shown in FIG. 42E. A raised portion 5021 of the square pattern shown.

Further, the first roller 5030 having the convex portion pattern shown in FIG. 40A is used for holding and absorbing. In the case of the body 5013, if the widths of the plurality of recessed portions 5041 of FIG. 41A are respectively widened, the ridges 5021 of the X-shaped pattern as shown in FIG. 42F are formed on the absorber 5013. In the present invention, of course, it is not limited to the above-described patterns or combinations. Further, examples of the convex portion pattern on the surface of the first roller 5030 include a stripe pattern in the horizontal direction (CD direction) or the oblique direction, a pattern in which a curve is used, and the like. This point is also the same for the recess pattern. Further, in FIGS. 42A to 42F, the raised portion 5021 is formed by a straight line, but may be a curved line within a range in which the effects of the present invention can be obtained.

Further, each of the plurality of raised portions 5021 has the same shape or size (area), but may be different in the present invention. For example, a large ridge 5021 may be provided at a portion where the absorber 5013 is to be largely bent. The portion to be largely bent is, for example, a boundary line between the side of the underarm region 5010C (leg side) where the absorbent body 5013 is to be pocket-shaped, the underarm region 5010C and the back body region 5010R (back side). The portion, the boundary line portion of the underarm region 5010C and the front body region 5010F (ventral side), the waist circumference to be deformed along the curve of the wearer's body, and the like.

Further, in the above embodiment, the cross-sectional shape of the depressed portion 5041 shown in Figs. 38A and 38B is not limited, and the present invention may be changed as follows.

43A and 43B are views showing two examples of the cross-sectional shape of the depressed portion 5041, wherein FIG. 43A shows a trapezoidal shape, and FIG. 43B shows a concave portion in which the side wall has two stages. Fig. 43A is a cross-sectional view of a depressed portion 5041 similar to that of the above embodiment. Even if the depressed portion 5041 is sandwiched between the depressed portion 5041 having the recessed portion having the side wall and the convex portion 5031, the depressed portion 5041 can be formed in the same manner as in the above embodiment, so that flexibility can be obtained in the region where the concave portion intersects.

11‧‧‧ Covering film

12‧‧‧Back sheet

13‧‧‧Acceptor

14‧‧‧Front sheet

501‧‧‧ Thinning Department

502‧‧‧ recess

901‧‧‧Intersection

902‧‧‧Intersection

903‧‧‧Intermediate area

904‧‧‧Interlayer joint compression

905‧‧‧ contour

A‧‧‧ intersection

B‧‧‧ intersection

Claims (11)

An absorbent article comprising: a liquid-permeable front sheet; a liquid-impermeable back sheet; and an absorbent body disposed between the front sheet and the back sheet, and the absorbent The surface on the front surface side of the body has a thinned portion formed in a group of a first straight line extending in parallel with the first direction and a second direction crossing the first direction. a grid defined by the group of the extended second straight lines, disposed along the lattice line of the lattice, and having a portion that is more concave than the surface of the absorber on the side of the front sheet; the thinned portion is included in the grid line The intersection of the intersection and its surroundings has a boundary. The absorbent article of claim 1, wherein the recessed portion of the thinned portion is compressed. The absorbent article of claim 2, wherein the intersecting region is compressed to a depth from the surface of the absorbent body on the side of the front sheet that is shallower than the recessed portion of the thinned portion. The absorbent article of claim 2, wherein the intersection region includes a central region including the intersection and an outer region thereof, and the outer region is compressed to a depth from a surface of the absorbent body on the front sheet side The recessed portion is shallower than the central portion of the thinned portion. The absorbent article of claim 2, wherein the intersection region includes a central region including the intersection and an outer lateral region thereof, and the central region is compressed from the surface of the absorbent body on the front sheet side The depth is deeper than the outer area above. The absorbent article of claim 2, wherein the intersection area is an uncompressed area. The absorbent article according to claim 2, wherein the intersection region has a ridge on a side of the back sheet side, and the surface on the front sheet side is recessed. The absorbent article according to any one of claims 1 to 7, wherein the front sheet is integrated with the absorbent body. The absorbent article according to any one of claims 1 to 7, wherein the recessed portion of the thinned portion has a recess recessed deeper than the bottom portion. A manufacturing apparatus according to claim 7, wherein the first rotating member has a peripheral surface portion formed with a convex portion, and is configured to press the absorption portion by the convex portion The convex portion on the front surface side of the body includes: a first convex portion configured to form a first concave portion extending in the first direction on the front surface of the absorbent body, and the first convex portion a second convex portion configured to form a second concave portion extending in a second direction different from the first direction in a intersecting state; and a second rotating member having a peripheral surface portion formed with a depressed portion and configured to be borrowed Rotating together with the first rotating member, sandwiching the absorbent body, and abutting against the back sheet side of the absorbent body, the recessed portion is disposed to intersect the first convex portion and the second convex portion The location of the area. A manufacturing method for producing a liquid permeable front sheet, a liquid-impermeable back sheet, and an absorbent article disposed between the front sheet and the back sheet Further, the method further includes a step of forming a first recess extending in the first direction on the side of the front sheet of the absorber, and a step of being different from the first direction in a state of being intersected with the first recess The second concave portion extending in two directions is pressed against the front sheet side of the absorbent body; and the step of pressing is performed to correspond to the first concave portion and the second portion The side surface of the absorbent body in the region where the concave portion intersects forms a ridge portion on the side of the back sheet, and the back sheet side of the absorbent body is deformed.