CN114040736A

CN114040736A - Absorbent article, method for producing absorbent, and apparatus for producing absorbent

Info

Publication number: CN114040736A
Application number: CN202080044487.7A
Authority: CN
Inventors: 大尾守; 工藤悦子; 桥野夕贵
Original assignee: Unicharm Corp
Current assignee: Unicharm Corp
Priority date: 2019-06-20
Filing date: 2020-06-19
Publication date: 2022-02-11
Also published as: WO2020256144A1; JP7158343B2; JP2021000236A

Abstract

Provided is an absorbent article which has the diffusibility of excrement in an absorbent body and which can simultaneously achieve both suppression of twisting of the absorbent body and fitting of the absorbent body to the body of a wearer. The absorbent article (1) has an absorber disposed at least in the crotch region (S3). A compression section (55) compressed in the thickness direction (T) is provided on the absorber (50). The compression section (55) includes: a first compressed part (551) having a lattice-like pattern in a plan view of the absorber (50); and a second compressing section (552) having a pattern different from the lattice-like pattern in a plan view of the absorber (50).

Description

Absorbent article, method for producing absorbent, and apparatus for producing absorbent

Technical Field

The present invention relates to an absorbent article, a method for producing an absorbent body, and an apparatus for producing an absorbent body.

Background

Conventionally, an absorbent article having an absorbent body provided with a lattice compressed part having a lattice pattern in a plan view of the absorbent body has been disclosed (for example, see patent document 1). Since the excrement is easily diffused along the lattice-like pattern, the diffusibility of the excrement in the absorbent body can be improved.

Documents of the prior art

Patent document

Patent document 1: japanese laid-open patent publication No. 2016-93482

Disclosure of Invention

In the uncompressed region where the lattice compressed parts are not provided, the rigidity of the absorbent body is low. Therefore, the absorbent body in the uncompressed region is easily deformed, and the absorbent body is easily fitted to the body of the wearer. However, the absorber is easily twisted, and there is a possibility that the absorption area cannot be secured.

Since the rigidity of the absorber is increased in the region where the lattice compression portions are provided, the absorber is less likely to be distorted. However, by providing the lattice compressed parts, the absorbent body is less likely to fit the body of the wearer. On the other hand, in order to make the absorbent body fit to the body of the wearer easily, for example, when a large-lattice compressed portion is provided, the absorbent body is easily twisted, and there is a possibility that the absorption area cannot be secured sufficiently.

Therefore, an absorbent article is desired which has the diffusibility of excrement in the absorbent body and which can simultaneously achieve both the suppression of the twisting of the absorbent body and the fitting of the absorbent body to the body of the wearer.

An absorbent article according to one embodiment includes: a front-rear direction, a width direction orthogonal to the front-rear direction, and a thickness direction; a front side region; a posterior region; a crotch region sandwiched by the front region and the rear region in the front-rear direction; and an absorber disposed at least in the crotch region. The absorbent body is provided with a compressed portion compressed in the thickness direction. The compression section has: a first compressing section having a lattice-like pattern in a plan view of the absorbent body; and a second compressing section having a pattern different from the lattice-like pattern in a plan view of the absorbent body.

A method of manufacturing an absorbent body of an absorbent article according to one aspect includes a compression step of providing a compressed portion by compressing at least an absorbent core in a thickness direction. In the compressing step, the first compressing section having a lattice-like pattern in a plan view of the absorbent body and the second compressing section having a pattern different from the lattice-like pattern in a plan view of the absorbent body are provided as the compressing sections.

An apparatus for manufacturing an absorbent body of an absorbent article according to one aspect includes a compressing device that compresses at least an absorbent core by a plurality of protrusions to provide a compressing portion. The plurality of projections have: a first convex portion provided with a first compressed portion having a lattice-like pattern in a plan view of the absorbent body; and a second convex portion provided with a second compressed portion having a pattern different from the lattice-like pattern in a plan view of the absorbent body.

Drawings

Fig. 1 is a schematic front view of an absorbent article of an embodiment.

Fig. 2 is a schematic plan view of the absorbent article of the embodiment.

Fig. 3 is a schematic plan view of the absorber of the embodiment.

Fig. 4 is a schematic cross-sectional view of an absorbent body of the embodiment.

Fig. 5 is a diagram for explaining a method of manufacturing the absorbent body according to the embodiment.

Fig. 6 is a diagram for explaining a manufacturing apparatus of an absorbent body according to the embodiment.

Fig. 7 is a schematic cross-sectional view of an absorber of a modification.

Detailed Description

(1) Brief description of the embodiments

At least the following matters will be made clear from the description of the present specification and the drawings.

An absorbent article according to one embodiment includes: a front-rear direction, a width direction orthogonal to the front-rear direction, and a thickness direction; a front side region; a posterior region; a crotch region sandwiched by the front region and the rear region in the front-rear direction; and an absorber disposed at least in the crotch region. The absorbent body is provided with a compressed portion compressed in the thickness direction. The compression section has: a first compressing section having a lattice-like pattern in a plan view of the absorbent body; and a second compressing section having a pattern different from the lattice-like pattern in a plan view of the absorbent body. This makes it possible to change the rigidity of the absorbent body in the region where the first compressed part is provided and the region where the second compressed part is provided. Accordingly, the absorbent body can be controlled from being deformed, and therefore, the first compressed portion has a function of diffusing excrement in the absorbent body, and the second compressed portion is provided in addition to the first compressed portion, whereby both suppression of twisting of the absorbent body and fitting of the absorbent body to the body of the wearer can be achieved.

According to a preferred aspect, the area occupied by the second compressed parts per unit area may be larger than the area occupied by the first compressed parts per unit area in a plan view of the absorbent body. Thus, the rigidity of the fixed region including the second compressed part (the region in which the region provided with the second compressed part and the region around the second compressed part are combined) is higher than the rigidity of the fixed region including the first compressed part (the region in which the region provided with the first compressed part and the region around the first compressed part are combined), and therefore, deformation of the absorbent body can be suppressed.

According to a preferred embodiment, the second compression part may be provided in the crotch region. In the crotch region, the absorbent body is easily deformed in the width direction by being sandwiched by the legs of the wearer. Therefore, by providing at least the second compression part in the crotch region, the rigidity of the crotch region can be increased by the second compression part, and deformation of the absorber due to pinching by the legs of the wearer can be suppressed.

According to a preferred aspect, the crotch region may have a rear crotch region located rearward of the center of the absorbent article in the front-rear direction. The second compression part may be provided in the rear-side crotch region. By providing the second compression part in the rear crotch region, the rigidity of the absorber in the rear crotch region can be improved. This makes it difficult for the absorber to enter the groin (cleft buttocks) of the buttocks, and ensures a space for receiving excrement (feces).

According to a preferred aspect, the second compressed part may be provided at a position separated from the first compressed part in a plan view of the absorbent body. Thus, compared to the case where the first compression part and the second compression part are provided continuously, the force applied to one of the first compression part and the second compression part is less likely to be transmitted to the other. Therefore, the first compression part and the second compression part are less susceptible to mutual influence, and can exhibit the respective functions of the first compression part and the second compression part.

According to a preferred aspect, in a plan view of the absorbent body, a distance between the first compressed part and the second compressed part in the front-rear direction may be longer than a length of one cell formed by the first compressed part in the front-rear direction. Thus, the force applied to one of the first compression part and the second compression part is more difficult to transmit to the other than when the distance between the first compression part and the second compression part is shorter than the length of one lattice of the first compressed material. Therefore, the respective functions of the first compression part and the second compression part can be further exhibited.

According to a preferred aspect, the first compression part may include: a front grid compression section provided on the front side of the center of the absorbent article in the front-rear direction; and a rear grid compression unit provided at a position rearward of the center in the front-rear direction. In a plan view of the absorbent body, the area occupied by the rear lattice compression parts per unit area may be larger than the area occupied by the front lattice compression parts per unit area. Thus, the region on the rear side of the center in the front-rear direction of the absorbent article has higher rigidity, and the region on the front side of the center in the front-rear direction of the absorbent article has lower rigidity. Therefore, urine is discharged from a region on the front side of the center in the front-rear direction of the absorbent article, and the front lattice compressed portion maintains diffusibility and has low rigidity, so that the absorbent body is easily deformed. This allows the absorbent body to easily approach the body of the wearer (specifically, the urination port), and thus the absorbent body can easily absorb urine. On the other hand, on the rear side where the feces are discharged, the absorbent body is less likely to deform because a region with relatively high rigidity is provided while maintaining diffusibility by the rear lattice compressed portion. This makes it difficult for the absorber to enter the groin (cleft buttocks) of the buttocks, and ensures a space for receiving excrement (feces).

According to a preferred aspect, the compressing section may further include a third compressing section having a pattern different from the lattice-like pattern in a plan view of the absorbent body. The third compression part may be provided at a position on the front side of the second compression part. According to this aspect, when the absorber on the rear side of the third compressing portion deforms, the portion on the front side of the third compressing portion is less likely to be interlocked with the deformation of the absorber on the rear side due to the rigidity of the third compressing portion. This can suppress deformation of the portion located on the front side of the third compression portion. Therefore, wrinkles are less likely to occur in the front side of the third compression portion, and leakage of excrement from the abdominal side can be suppressed.

According to a preferred aspect, the third compression part may be provided on a front side of the first compression part. In a plan view of the absorbent body, the area occupied by the third compressed parts per unit area may be larger than the area occupied by the first compressed parts per unit area. In this way, since the region where the third compressed portion is provided has higher rigidity than the region where the first compressed portion is provided, deformation of the absorbent body in the portion located on the front side of the third compressed portion can be suppressed.

According to a preferred embodiment, the absorbent body has an absorbent core containing a liquid-absorbing absorbent material. The absorbent core may have a narrowing portion in the crotch region, the narrowing portion being narrowed toward the inside in the width direction at both side edges in the width direction of the absorbent core in a plan view of the absorbent body. The third compressed portion may be provided on the front side of the narrowed portion. According to this aspect, since the length of the absorbent core in the width direction is reduced by the narrowing portion, when the narrowing portion is sandwiched between the legs of the wearer, the portion sandwiched between the legs is easily deformed, and the wearer can be prevented from feeling uncomfortable due to the rigidity of the absorbent body. Further, since the third compression part is provided at a position forward of the constricted part, deformation of the portion sandwiched between the legs of the wearer is not hindered, and the rigidity of the third compression part can suppress the deformation of the portion sandwiched between the legs from being interlocked with the portion forward of the third compression part.

According to a preferred aspect, the absorbent article may have an exterior body provided at least in the front side region. The third compressed portion may overlap the outer package in the thickness direction. According to this aspect, the rigidity of the third compression portion can suppress deformation of the outer package in conjunction with deformation of the absorber. This makes it difficult for the outer package to wrinkle, and leakage of excrement from the abdominal side can be suppressed.

According to a preferred aspect, the third compressed portion may extend in the width direction so as to straddle the center of the absorbent article in the width direction and to form a convex shape toward the rear side in a plan view of the absorbent body. Thus, when a portion of the absorbent body disposed rearward of the third compressed portion is deformed, the deformation of the absorbent body is released outward in the width direction along the convex shape of the third compressed portion. Therefore, the deformation of the absorbent body in the front portion of the third compressed portion can be suppressed.

According to a preferred aspect, the first compressed part may be formed of a plurality of compressed parts intermittently so as to have the lattice-like pattern. This can suppress an increase in rigidity of the absorbent body due to the first compressed portion, as compared with a case where the first compressed portion is formed of a continuously extending compressed portion. Therefore, the absorbent body can be easily fitted to the wearer's body while maintaining the diffusibility.

A method of manufacturing an absorbent body of an absorbent article according to one aspect includes a compression step of providing a compressed portion by compressing at least an absorbent core in a thickness direction. In the compressing step, the first compressing section having a lattice-like pattern in a plan view of the absorbent body and the second compressing section having a pattern different from the lattice-like pattern in a plan view of the absorbent body are provided as the compressing sections. In this way, in the absorbent body produced, the rigidity can be changed between the region provided with the first compressed portion and the region provided with the second compressed portion. Therefore, an absorbent body of an absorbent article can be manufactured as follows: the first compressed parts allow the absorption body to have a diffusibility of excrement in the absorption body, and the second compressed parts are provided in addition to the first compressed parts, whereby the absorption body can be prevented from being twisted and the absorption body can be fitted to the body of the wearer.

According to a preferred embodiment, the compressing step may include a step of covering the absorbent core with a core covering sheet constituting a core covering portion. In the compression step, the compressed portion may be provided by compressing the absorbent core and the core wrap sheet. This makes it possible to manufacture an absorbent body for an absorbent article, which is capable of maintaining the diffusion of excrement in a casing having a core wrap covering an absorbent core.

According to a preferred embodiment, the compression step may include the steps of: a step of providing the first compression portion by compressing the absorbent core and the core wrap sheet by a first projection provided on an outer peripheral surface of at least one of a pair of first rollers; and a step of providing the second compression portion by compressing the absorbent core and the core wrap sheet by a second projection provided on the outer peripheral surface of at least one of the pair of second rollers. According to this aspect, since the first convex portion and the second convex portion cannot be arranged at the same position in one roller, the position where the first compression portion and the second compression portion are provided can be restricted. Therefore, by using the first roller and the second roller, the first compression part and the second compression part can be provided at arbitrary positions.

According to a preferred aspect, in the compressing step, when one of the first compressing section and the second compressing section is provided in a compressing region in which the other compressing section is provided, the absorbent core and the core wrap sheet may be compressed only in a partial region of the compressing region in the conveying direction. As a result, the compression is performed only in a partial region of the compression region in the conveying direction, and the compression region of the core wrap sheet can be suppressed from being continuously compressed. Therefore, damage to the core wrap sheet due to compression can be reduced, and damage to the core wrap sheet can be suppressed.

According to a preferred embodiment, the compression step may include the steps of: a step of providing one of the first compression part and the second compression part that is compressed deeply in the thickness direction; and a step of providing the other of the first compression part and the second compression part after the one compression part is provided. According to this aspect, if the core wrap sheet is compressed deeply in a state where the rigidity of the core wrap sheet is increased by the compression, the core wrap sheet having high rigidity is hard to stretch, and therefore the core wrap sheet may be damaged. Therefore, in the core-covering sheet provided with the deep compressed portion by being compressed deeply in the thickness direction, the amount of change in the thickness direction of the core-covering sheet during compression can be reduced by being compressed shallowly. Therefore, in the case where the shallow compressed portion and the deep compressed portion are provided, breakage of the core wrap sheet can be suppressed.

An apparatus for manufacturing an absorbent body of an absorbent article according to one aspect includes a compressing device that compresses at least an absorbent core by a plurality of protrusions to provide a compressing portion. The plurality of projections have: a first convex portion provided with a first compressed portion having a lattice-like pattern in a plan view of the absorbent body; and a second convex portion provided with a second compressed portion having a pattern different from the lattice-like pattern in a plan view of the absorbent body. In this way, in the absorbent body produced, the rigidity can be changed between the region provided with the first compressed portion and the region provided with the second compressed portion. Therefore, an absorbent body of an absorbent article can be manufactured as follows: the first compressed parts allow the absorption body to have a diffusibility of excrement in the absorption body, and the second compressed parts are provided in addition to the first compressed parts, whereby the absorption body can be prevented from being twisted and the absorption body can be fitted to the body of the wearer.

(2) General structure of absorbent article

Hereinafter, an absorbent article according to an embodiment will be described with reference to the drawings. In the following description of the drawings, the same or similar parts are denoted by the same or similar reference numerals. However, the drawings are schematic, and it should be noted that the ratio of each dimension and the like are different from the actual ratio. Therefore, specific dimensions and the like should be determined with reference to the following description. In addition, the drawings may include portions having different dimensional relationships and ratios from each other.

The absorbent article is, for example, a pants-type disposable diaper, a tape-type disposable diaper, or a pants-type sanitary napkin. The absorbent article of the embodiment is a pants-type disposable diaper. Fig. 1 is a schematic front view of an absorbent article 1 of the present embodiment. Fig. 2 is a schematic plan view of the absorbent article 1 of the present embodiment. Fig. 2 is a schematic plan view showing an extended state in which the absorbent article 1 is extended in a state where side joint portions 18 described later are unfolded, and the state where no gathers are formed. Fig. 3 is a schematic plan view of the absorber of the present embodiment. Fig. 4 is a schematic cross-sectional view of the absorber of the present embodiment. Fig. 4 is a sectional view taken along the section F4-F4 shown in fig. 3.

The absorbent article 1 has a front-back direction L and a width direction W that are orthogonal to each other. The front-back direction L is defined by a direction extending to the front side and the back side of the body. In other words, the front-rear direction L is a direction extending in the front-rear direction in the unfolded absorbent article 1. The absorbent article 1 has a thickness direction T orthogonal to both the front-back direction L and the width direction W. The thickness direction T extends toward a skin surface side T1 of the wearer and a non-skin surface side T2 opposite to the skin surface side.

The absorbent article 1 has a front region S1, a rear region S2, and a crotch region S3. The front side region S1 is a region facing the front waistline (abdomen) of the wearer. The back region S2 is a region facing the back waist (back) of the wearer, and includes a region on which the body (buttocks) is placed when worn. The crotch region S3 is a region located in the crotch of the wearer and sandwiched between the front region S1 and the back region S2. As shown in fig. 1, a side joining portion 18 may be provided that joins an end portion of the front side region S1 in the width direction W and an end portion of the rear side region S2 in the width direction W. The side joint portion 18 is defined by a portion that locks the outer portion of the front region S1 and the outer portion of the rear region S2 to each other. As shown in fig. 1, in the absorbent article 1, a waist opening 16 through which the body of the wearer passes and a pair of leg hole openings 17 into which the legs of the wearer are inserted are formed in a state in which the side joint sections 18 are formed. The waist opening portion 16 may be defined by a front end edge S1F of the front side region S1 and a rear end edge S2R of the rear side region S2.

Here, fig. 2 shows a state where the engagement at the side joint portions 18 is released and the absorbent article 1 is unfolded. The side joint portions 18 may extend in the front-rear direction L in the front outer package 20 and the rear outer package 30, respectively. In the pant-type absorbent article, the boundary between the front side region S1 and the crotch region S3 may be defined by the rear end edge of the side joint section 18 provided in the front side outer cover 20. Similarly, the boundary between the rear region S2 and the crotch region S3 may be defined by the front end edge of the side joining section 18 provided in the rear outer cover 30. The crotch region S3 may be a region where the leg hole openings 17 are provided. The crotch region S3 may have a front crotch region S3F located forward of the center of the absorbent article 1 in the front-rear direction L and a rear crotch region S3R located rearward of the center of the absorbent article 1 in the front-rear direction L.

The outer portion in the present invention means a portion occupying a certain range in the width direction W including an outer edge in the width direction W, and the outer edge means an outer edge in the width direction W. The inner side portion in the present invention means a portion occupying a certain range in the width direction W including an inner edge in the width direction W, and the inner side edge means an inner edge in the width direction W. In the present invention, the front end portion and the rear end portion are portions that occupy a certain range in the front-rear direction L, including edges in the front-rear direction L, and the front end edge and the rear end edge are edges in the front-rear direction L. The outer end includes a front end and a rear end, and the outer end edge includes a front end edge and a rear end edge.

In the present embodiment, the absorbent article 1 may have the outer package 15 and the absorbent main body 40. The outer package 15 and the absorbent body 40 overlap in the thickness direction T. The exterior body 15 may have a front side exterior body 20 disposed in the front side region S1 and a rear side exterior body 30 disposed in the rear side region S2. The front side outer package 20 is an outer package disposed on the non-skin surface side T2 with respect to the absorbent main body 40 in the front side region S1. The rear side outer package 30 is separated from the front side outer package 20 in the front-rear direction L and is disposed on the non-skin surface side T2 with respect to the absorbent main body 40 in the rear side region S2.

The outer package 15 may have a cover sheet disposed on the skin surface side T1 of the absorbent main body 40. The cover sheet may have a front cover sheet 27 provided on the skin surface side T1 of the absorbent main body 40 in the front region S1 and a rear cover sheet 37 provided on the skin surface side T1 of the absorbent main body 40 in the rear region S2. The front cover sheet 27 and the rear cover sheet 37 may be made of a sheet material such as a nonwoven fabric.

The front outer package 20 may have a front outer sheet 25 disposed on the non-skin surface side T2 with respect to the absorbent main body 40. The rear outer cover 30 may have a rear outer cover sheet 35 disposed on the non-skin surface side T2 with respect to the absorbent main body 40. The front exterior sheet 25 and the rear exterior sheet 35 may be made of a sheet material such as a nonwoven fabric. The front exterior sheet 25 and the rear exterior sheet 35 may be formed of a plurality of sheets stacked in the thickness direction T. The outer package 15 may include a waist elastic member (not shown) having stretchability in the width direction W.

The absorbent main body 40 is disposed at least in the crotch region S3. The absorbent body 40 may be disposed over the front region S1, the back region S2, and the crotch region S3. The absorbent main body 40 may be formed separately from the front outer cover 20 and the rear outer cover 30, and joined to the front outer cover 20 and the rear outer cover 30 in the front region S1 and the rear region S2, respectively.

The absorbent main body 40 (absorbent article 1) has an absorber 50 disposed at least in the crotch region S3. The absorbent body 50 has at least an absorbent core 51. The absorbent core 51 comprises an absorbent material that absorbs liquid. The absorbent core 51 may comprise, for example, comminuted pulp or superabsorbent polymer (SAP) or mixtures thereof. The absorbent core 51 is disposed in at least the crotch region S3. The absorbent core 51 may be disposed in the front side region S1 or in the back side region S2. The absorbent core 51 may also extend in the front-back direction L from the front side region S1 to the back side region S2.

As shown in fig. 3, the absorbent core 51 may have a narrowed portion 512 that narrows toward the inside in the width direction W at both side edges in the width direction W of the absorbent core 51 in a plan view of the absorbent body 50. The narrowing portion 512 may be provided in the crotch region S3. The absorber 50 is provided with a compressed portion 55 compressed in the thickness direction. Details of the compression section 55 will be described later.

The absorbent core 51 may have a bending inducing portion 515 that facilitates bending of the absorbent core 51. The bending induction portion 515 can induce deformation of a portion sandwiched by the legs of the wearer. This enables the absorber 50 to be deformed as intended. The bending induction portion 515 may be a concave portion that is concave in the thickness direction T, or may be a slit that penetrates the absorbent core 51 in the thickness direction T. The weight per unit area of the absorbent material at the bending-inducing portion 515 may be lower than the weight per unit area of the absorbent material at the compressed portion 55. The bending induction portion 515 may be disposed adjacent to the narrowing portion 512 in the width direction W.

The absorber 50 may have a core wrap 52 that wraps the absorbent core 51. The core wrap 52 sandwiches the absorbent core 51 in the thickness direction T. The core wrap 52 may extend to the outside in the front-rear direction L relative to the absorbent core 51. For example, as shown in fig. 3, in a plan view of the absorbent core 50, the rear end edge 52R of the core wrap 52 may be located more rearward than the rear end edge 51R of the absorbent core 51, and the front end edge 52F of the core wrap 52 may be disposed at the same position as the front end edge 51F of the absorbent core 51. The core wrap 52 may be made of thin paper or nonwoven fabric, for example.

The absorbent body 40 may include a skin-facing sheet 41 (see fig. 2) positioned on the skin-facing side T1 of the absorber 50, a liquid-impermeable sheet (not shown) positioned on the non-skin-facing side T2 of the absorber 50, and a body sheet 43 (see fig. 1) arranged on the non-skin-facing side T2 of the liquid-impermeable sheet. The skin sheet 41 may include a center sheet 41A covering the width direction W of the absorber 50 and a pair of side sheets 41B covering the outer side portions of the center sheet 41A at positions closer to the skin surface side T1 than the center sheet 41A. The skin-facing sheet 41 and the main sheet 43 may be liquid-permeable, and may be formed of, for example, nonwoven fabric. The liquid-impermeable sheet may be a film, for example, as long as it is liquid-impermeable.

(3) Detailed structure of absorbent 50

The detailed structure of the absorbent 50 will be described with reference to fig. 2 to 4. The absorbent body 50 is provided with a compressed portion 55 compressed in the thickness direction T. The compression portion 55 has a first compression portion 551 and a second compression portion 552. The compression part 55 may further have a third compression part 553.

The first compressed portions 551 have a lattice pattern in a plan view of the absorbent body 50. The first compressed portion 551 may be formed of a plurality of compressed portions intermittently provided to have a lattice-like pattern. For example, as shown in fig. 3, the first compressed portion 551 may include a linear compressed portion 551a extending linearly and a curved compressed portion 551b extending while being curved. The first compressed portion 551 may or may not extend from the front end edge 50F to the rear end edge 50R of the absorbent body 50 (see fig. 3). The first compressed portion 551 may be provided in the center of the absorbent body 50 in the width direction W. The first compressed portion 551 may not be provided at the side end of the absorbent body 50 in the width direction W. As shown in fig. 3 and 4, the first compressed portion 551 may be provided in a region where the absorbent core 51 is not present.

The second compressed portion 552 has a pattern different from the lattice-like pattern in a plan view of the absorbent body 50. The second compressing portion 552 may be provided in the crotch region S3. The second compressing portion 552 is a portion where the absorbent body is pressed in a planar shape. The second compressing portion 552 may be provided on the rear side of the center CL of the absorbent article 1 in the front-rear direction L. Therefore, second compressing unit 552 may be disposed in rear crotch region S3R. The front end edge of the second compressed portion 552 may be located on the rear side of the center CL of the absorbent article 1 in the front-rear direction L. The second compressed portion 552 may also span the center of the center CW in the width direction W of the absorbent article 1. The second compressing portion 552 may extend in the width direction W. The second compressed portion 552 may have a rectangular shape in a plan view of the absorbent body 50. The width-directional length of the second compressed portion 552 may coincide with the width-directional length of the region where the first compressed portion 551 is disposed. The second compressed portion 552 may be located further inward in the width direction than the outer edge of the absorbent core, apart from the outer edge of the absorbent core. The second compressing portion 552 may be disposed on the front side of the center in the front-rear direction L of the rear crotch region S3R. Thus, the absorbent body 50 is less likely to contract in the width direction W than the second compressed portion 552, and a feces storage space is easily secured. At least a part of the second compression part 552 may be disposed forward of the center in the front-rear direction L of the rear crotch region S3R, but the entire region of the second compression part 552 may be disposed forward of the center in the front-rear direction L of the rear crotch region S3R. The rear end edge of the second compression part 552 may be located forward of the center in the front-rear direction L of the rear crotch region S3R.

The absorbent article 1 may have a region where the first compressed portion 551 and the second compressed portion 552 overlap each other in a plan view of the absorbent body 50. In a plan view of the absorbent body 50, the area occupied by the second compressed portions 552 per unit area is larger than the area occupied by the first compressed portions 551 per unit area. Thus, the rigidity of the region where the second compressed portion 552 is provided is higher than the rigidity of the region where the first compressed portion 551 is provided, and therefore, deformation of the absorber 50 can be suppressed. Further, in the embodiment, the area of the region R1 in which the lattice-shaped pattern is formed by the first compressed part 551 may be larger than the area of the second compressed part 552. According to this structure, the second compressed portion 552 is provided in a narrower range than the first compressed portion 551. Therefore, by narrowing the region having high rigidity to a narrow range, it is possible to suppress deterioration of the wearing comfort of the wearer wearing the absorbent article 1 due to rigidity.

As shown in fig. 4, the thickness h1 of the absorbent body in the region where the first compressed parts 551 are provided may be thicker than the thickness h2 of the absorbent body in the region where the second compressed parts 552 are provided. Therefore, the depth of the recess in the first compressed portion 551 may be shallower than the depth of the recess in the second compressed portion 552. This can reduce the rigidity of the second compressed portion 552 compared to the rigidity of the first compressed portion 551, and can suppress deterioration of the wearing comfort of the absorbent article 1 due to the rigidity of the first compressed portion 551 provided in a range larger than the range of the second compressed portion 552.

The third compressed portion 553 has a pattern different from the lattice-like pattern in a plan view of the absorbent body 50. The third compression portion 553 is provided at a position on the front side of the second compression portion 552. The third compressing portion 553 may be provided on the front side of the center CL of the absorbent article 1 in the front-rear direction L. The third compression part 553 may be arranged in the front crotch region S3F. The rear end edge of the third compression part 553 may be located forward of the center CL of the absorbent article 1 in the front-rear direction L, or may be located forward of the center of the front crotch region S3F in the front-rear direction L. The third compressed portion 553 may span the center of the center CW in the width direction W of the absorbent article 1. As shown in fig. 3, the third compression part 553 may extend in the width direction W. The third compressed portion 553 may extend in the width direction W so as to be convex toward the rear side in a plan view of the absorbent body 50. For example, the rear end edge of the third compressing portion 553 may be bent outward in the front-rear direction L and may be directed outward from the inside in the width direction W. The third compression part 553 may be a crescent shape. The third constriction 553 may be disposed at a position forward of the narrowing portion 512. Therefore, the third compression portion 553 may be provided at a position further to the front side than the front end edge 512F of the narrowing portion 512. In the embodiment, the third compression part 553 is disposed across the boundary between the front region S1 and the crotch region S3. Therefore, the third compression portion 553 overlaps the front outer 20 in the thickness direction T. The third compression part 553 may be disposed only in the front region S1 or only in the crotch region S3.

That is, the absorber 50 is provided with: an area where only the first compression portion 551 is provided, an area where only the second compression portion 552 is provided, an area where only the third compression portion 553 is provided, an area where the first compression portion 551 and the second compression portion 552 are provided, and an area where the first compression portion 551 and the third compression portion 553 are provided. As described above, in the absorbent article 1, the rigidity of the absorbent body 50 can be changed between the region where the first compressed portion 551 is provided and the region where the second compressed portion 552 is provided. Therefore, since the deformation of the absorbent body 50 can be controlled, the first compressed parts 551 have the diffusibility of excrement in the absorbent body 50, and the second compressed parts 552 are provided in addition to the first compressed parts 551, whereby the suppression of the twisting of the absorbent body 50 and the fitting of the absorbent body 50 to the body of the wearer can be achieved at the same time. In addition, in the crotch region S3, the absorbent body 50 is easily deformed in the width direction W by being sandwiched between the legs of the wearer. By providing the second compressed portion 552 in the crotch region S3, deformation of the absorbent body 50 caused by being sandwiched between the legs of the wearer can be suppressed.

Further, since the second compressing unit 552 is provided in the rear crotch region S3R, the rigidity of the absorber 50 in the rear crotch region S3R can be improved. This makes it difficult for the absorber 50 to enter the groin (cleft buttocks) of the buttocks, and ensures a space for receiving excrement (feces). Further, since the compressing portion 55 includes the third compressing portion 553, when the absorbent body on the rear side of the third compressing portion 553 is deformed, the portion on the front side of the third compressing portion 553 is less likely to be interlocked with the deformation of the absorbent body on the rear side due to the rigidity of the third compressing portion 553. This can suppress deformation of the portion ahead of the third compression portion 553. Therefore, wrinkles are less likely to occur in the front side of the third compressing portion 553, and leakage of excrement from the abdominal side can be suppressed.

Further, since the narrowing portion 512 reduces the length of the absorbent core 51 in the width direction, when the wearer's legs sandwich the narrowing portion 512, the portion sandwiched by the legs is easily deformed. Since the third compressing portion 553 is provided at a position on the front side of the narrowing portion 512, the wearer's uncomfortable feeling due to the rigidity of the absorbent body 50 can be suppressed. Further, since the third compression portion 553 is provided at a position forward of the narrowing portion 512, deformation of the portion sandwiched by the legs of the wearer is not hindered, and deformation of the portion sandwiched by the legs can be suppressed from interlocking with the portion forward of the third compression portion 553 by the rigidity of the third compression portion 553. Since the portion on the front side of the third compressing portion 553 is less likely to deform, wrinkles are less likely to occur, and leakage of excrement from the abdominal side can be suppressed.

Further, since the third compressed portions 553 overlap the front side outer package 20 in the thickness direction T, the front side outer package 20 can be suppressed from deforming in conjunction with the deformation of the absorbent body 50 by the rigidity of the third compressed portions 553. This makes it difficult for the front side outer package 20 to wrinkle, and leakage of excrement from the ventral side can be suppressed. When a portion of the absorbent body 50 provided at a position rearward of the third compressed portion 553 is deformed, the deformation of the absorbent body 50 is released outward in the width direction W along the convex shape of the third compressed portion 553. Therefore, the deformation of the absorber at the portion further to the front side than the second front side compression unit can be suppressed. Further, since the first compressed portion 551 is formed of a plurality of compressed portions, it is possible to suppress an increase in rigidity of the absorbent body 50 due to the first compressed portion 551, as compared with a case where the first compressed portion 551 is formed of a continuously extending compressed portion. Therefore, the absorbent body can be easily fitted to the wearer's body while maintaining the diffusibility.

(4) Method for producing absorbent

Next, a method for producing the absorber 50 will be described with reference to fig. 5 and 6. Fig. 5 is a diagram for explaining a method of manufacturing the absorber 50. Fig. 5A shows the member viewed from the transverse direction TD (upper side), and fig. 5B shows the member viewed from the transverse direction CD. Fig. 6 is a diagram for explaining a manufacturing apparatus of an absorbent body according to the embodiment. Fig. 6A is a view for explaining the rollers of the first compression device, and is an expanded view of expanding the outer peripheral surface of the rollers of the first compression device on a plane. FIG. 6B is a schematic cross-sectional view taken along section F6B-F6B of FIG. 6A. Fig. 6C is a diagram for explaining the first roller of the second compression device, and is an expanded view of expanding the outer peripheral surface of the roller of the second compression device on a plane. FIG. 6D is a schematic cross-sectional view taken along section F6D-F6D of FIG. 6C. The direction of the conveying structural member in the manufacturing process is referred to as a conveying direction MD, the direction intersecting the conveying direction is referred to as an intersecting direction CD, and the direction orthogonal to the conveying direction MD and the intersecting direction CD is referred to as a transverse direction TD.

The absorber 50 can be manufactured using the manufacturing apparatus 100 of the embodiment. The manufacturing apparatus 100 may have a wrapping apparatus 120, a compressing apparatus 130, and a cutting apparatus 140. The manufacturing apparatus 100 may have a conveying apparatus for conveying each component. The covering device 120 is a device that folds back the core covering sheet 52C in such a manner that the core covering sheet 52C covers the absorbent core 51. The coating device 120 may include a pair of bending guide members (not shown) arranged in parallel in the CD direction as a main body. The cladding apparatus 120 is used in the process S20 described below.

The compressing device 130 is a device that provides the compressing portion 55 by compressing at least the absorbent core with a plurality of projections. The compressing device 130 may have a first compressing device 131 and a second compressing device 132. The first compressing device 131 is a device for providing the first compressing portion 551. The first compression device 131 may have a pair of upper and lower

first rollers

131A and 131B as an example of a pair of rotary members. The pair of

first rollers

131A and 131B are supported by bearings, not shown, and are rotatable about a rotation axis parallel to the CD direction. Accordingly, the absorbent continuous body 50C fed into the gap between the outer peripheral surfaces of the pair of

first rollers

131A and 131B is fed downstream in the MD direction through the gap G41.

As shown in fig. 6A and 6B, the first protrusion 151 may be provided on the outer circumferential surface 131S of the first roller 131A. The first convex portion 151 may have, for example, a linear convex portion 151a for forming a linear compression portion 551a and a curved convex portion 151b for forming a curved compression portion 551 b. The outer circumferential surface of the first roller 131B may be a smooth surface without the first protrusions 151. The second compressing device 132 is a device for providing the second compressing portion 552. The second compression device 132 may have a pair of upper and lower

second rollers

132A and 132B, similar to the first compression device 131. The description of the same configuration as that of the

first rollers

131A and 131B in the

second rollers

132A and 132B is omitted. As shown in fig. 5, the second compression device 132 may be disposed on the upstream side of the first compression device 131.

As shown in fig. 6C and 6D, a second convex portion 152 for forming the second compression portion 552 may be provided on the outer circumferential surface 132S of the second roller 132A. In addition, a third protrusion 153 for forming a third compression part 553 may be provided on the outer circumferential surface 132S of the second roller 132A. The outer circumferential surface of the second roller 132B may be a smooth surface without the second convex portions 152 and the third convex portions 153. The height of the second protrusion 152 is higher than the height of the first protrusion 151 in the transverse direction TD. Therefore, the second convex portion 152 can be compressed more deeply than the first convex portion 151. Further, since the height of the third convex portions 153 is higher than the height of the first convex portions 151, the third convex portions 153 can be compressed deeper than the first convex portions 151.

The cutting device 140 is a device that cuts the absorbent continuous body 50C in which the absorbent body 50 is continuous in the front-rear direction L. The cutting device 140 may have, for example, a pair of upper and lower

third rollers

140A and 140B. The third roller 140A may be a cutter roller having a cutter 141 on an outer circumferential surface of the third roller 140A. The third roller 140B may be an anvil roller that receives a cutter 141.

In addition, a conventional method can be used as a method not described in this embodiment. The following manufacturing method is an example, and the present invention may be manufactured by other manufacturing methods.

As shown in fig. 5, the method for producing the absorbent body 50 of the present embodiment includes steps S10 to S40. The step S10 is a step of disposing the absorbent core 51 on the core-covering sheet 52C constituting the core-covering portion 52. In step S10, the absorbent core 51 produced by laminating the absorbent materials may be disposed on the core wrap sheet 52C. In addition, the absorbent core 51 may have the bending induction portion 515. The bend inducing portion 515 may be formed by reducing the amount of lamination of the absorbent material in the bend inducing portion 515.

Step S20 is a step of covering the absorbent core 51 with the core covering sheet 52C. The step S20 may be performed by using the coating apparatus 120. In step S20, the core wrap sheet 52C is folded so that each end in the CD direction is positioned above the absorbent core 51, and is folded back inward in the CD direction. In the absorbent core 51, the folded-back portion of the core-covering sheet 52C is folded up and down, and the outer peripheral surface of the absorbent core 51 is covered with the core-covering sheet 52C.

Step S30 is a compression step of providing the compression portion 55 by compressing the absorbent core 51 at least in the thickness direction T. In step S30, as the compressed parts 55, first compressed parts 551 having a lattice-like pattern in a plan view of the absorbent body 50 and second compressed parts 552 having a pattern different from the lattice-like pattern in a plan view of the absorbent body 50 are provided. In step S30, a third compressing unit 553 may be further provided as the compressing unit 55. In step S30, the compressed portions 55 may be provided by compressing the absorbent core 51 and the core wrap sheet 52C. The process S30 may have the process S32 and the process S34. The process S32 may be performed using the second compression device 132, and the process S34 may be performed using the first compression device 131.

In step S32, the second compressed portion 552 is provided by compressing the absorbent core 51 and the core wrap sheet 52C by the second convex portion 152 provided on the outer peripheral surface 132S of at least one of the pair of

second rollers

132A, 132B. Similarly, the third compression portion 553 may be provided by compressing the absorbent core 51 and the core wrap sheet 52C by the third convex portion 153 provided on the outer peripheral surface 132S of at least one of the pair of

second rollers

132A, 132B.

In step S34, the absorbent core 51 and the core wrap sheet 52C are compressed by the first protrusions 151 provided on the outer peripheral surface 131S of at least one of the pair of

first rollers

131A and 131B, thereby providing first compressed portions 551. Specifically, the linear compressed portions 551a are provided by compressing the absorbent core 51 and the core wrap sheet 52C with the linear protrusions 151 a. The curved compressed portions 551b are provided by compressing the absorbent core 51 and the core wrap sheet 52C with the curved convex portions 151 b.

In step S32, the second compressed portion 552 compressed deeply in the thickness direction T is provided. Further, a third compression portion 553 which is compressed deeply in the thickness direction T may be provided. On the other hand, in step S34, after the second compressed portion is provided, the first compressed portion 551 compressed shallowly in the thickness direction T is provided. In step S30, the first compressed portion 551 is provided in the compression region where the second compressed portion 552 is provided. In step S34, the absorbent core 51 and the core wrap sheet 52C are compressed in the conveyance direction MD only in a partial region of the compressed region (i.e., the region where the second compressed portion 552 is provided). Therefore, the absorbent core 51 and the core wrap sheet 52C are not compressed in the entire area of the compressed area. Similarly, the absorbent core 51 and the core wrap sheet 52C are compressed only in a partial region of the region where the third compression parts 553 are provided.

Step S40 is a step of cutting the absorbent continuous body 50C. Step S40 can be performed using the cutting device 140. The absorbent continuous body 50C is cut at the same position as the front end edge 51F of the absorbent core 51 or at a position on the front side of the front end edge 51F of the absorbent core 51. This enables the absorbent body 50 to be manufactured.

With the method for producing the absorbent body 50 of the embodiment, in the produced absorbent body 50, the rigidity can be changed in the region where the first compressed portions 551 are provided and the region where the second compressed portions 552 are provided. Accordingly, the absorbent body 50 of the absorbent article 1 can be manufactured, and the absorbent body 50 of the absorbent article 1 has the diffusibility of excrement on the absorbent body 50 by the first compressed parts 551, and the suppression of twisting of the absorbent body 50 and the fitting property of the absorbent body 50 to the body of the wearer can be achieved at the same time by providing the second compressed parts 552 in addition to the first compressed parts 551. Further, the absorbent article 1 can be manufactured using the absorbent body 50 manufactured as described above.

In step S30, since the absorbent core 51 and the core wrap sheet 52C are compressed to provide the compressed portions 55, the absorbent body 50 of the absorbent article 1 can be manufactured, and the absorbent body 50 can maintain the diffusion of excrement in the casing having the core wrap 52 covering the absorbent core 51. The step S30 includes a step S32 using the second compressing device 132 and a step S34 using the first compressing device 131. Since the first projection 151 and the second projection 152 cannot be arranged at the same position in one roller, the arrangement positions of the first compression part 551 and the second compression part 552 can be restricted. Therefore, by using the

first rollers

131A and 131B and the

second rollers

132A and 132B, the first compression part 551 and the second compression part 552 can be provided at arbitrary positions.

Further, in a state where the rigidity of the core covering sheet 52C is increased by compression, if the core covering sheet 52C is compressed deeply, the core covering sheet 52C having high rigidity is hard to stretch, and therefore the core covering sheet 52C may be broken. Therefore, in the core wrap sheet 52C provided with the second compression part 552 and the third compression part 553 which are the deep compression parts by deeply compressing in the thickness direction T in the step S30, the amount of change in the thickness direction T of the core wrap sheet 52C during compression can be reduced by shallowly compressing. Therefore, in the case where the shallow compressed portions 55 and the deep compressed portions 55 are provided, the core wrap sheet 52C can be suppressed from being damaged. In step S34, the absorbent core 51 and the core wrap sheet 52C are compressed only in a partial region of the compressed region (i.e., the region where the second compressed portion 552 is provided) in the conveyance direction MD. This can suppress the compressed region of the core wrap sheet 52C from being continuously compressed. Therefore, damage to the core wrap sheet 52C due to compression can be reduced, and breakage of the core wrap sheet 52C can be suppressed.

(5) Modification example

Next, each modification will be described with reference to fig. 7. Fig. 7 is a schematic cross-sectional view of an absorber of a modification. The same description as in the above embodiment is omitted. As shown in fig. 7, the first compressed portion 551 may have a front lattice compressed portion 551F disposed at a position forward of the center CL of the absorbent article 1 in the front-rear direction L and a rear lattice compressed portion 551R disposed at a position rearward of the center CL. In addition, the rear lattice compression part 551R may have a lattice pattern different from that of the front lattice compression part 551F. As shown in fig. 7, the area occupied by the rear lattice compressed portion 551R per unit area may be larger than the area occupied by the front lattice compressed portion 551F per unit area in a plan view of the absorbent body 50.

The front lattice compressing portion 551F may be disposed between the third compressing portion 553 and the second compressing portion 552 in the front-rear direction L. The rear grid compressed portion 551R may be disposed on the rear side of the second compressed portion 552 in the front-rear direction L. As shown in fig. 7, the first and

second compressing portions

551 and 552 may not overlap. The second compressed portion 552 may be provided at a position separated from the first compressed portion 551 in a plan view of the absorbent body 50. The distance between the first and second

compressed portions

551 and 552 in the front-rear direction L may be longer than the length of one lattice constituted by the first compressed portions 551 in the front-rear direction L. Specifically, the spacing distance L21 in the front-rear direction L between the front lattice compressed portion 551F and the second compressed portion 552 may be longer than the front lattice length L11. In fig. 7, the spacing distance L21 is shorter than the length L11.

The distance L22 between the rear grid compressed part 551R and the second compressed part 552 in the front-rear direction L may be longer than the rear grid length L12, which is the length of one grid formed by the rear grid compressed part 551R in the front-rear direction L. Further, the distance between the first compressed portion 551 and the third compressed portion 553 in the front-rear direction L may be longer than the length of one lattice constituted by the first compressed portion 551 in the front-rear direction L. Specifically, the distance L3 between the front grid compressed part 551F and the third compressed part 553 in the front-rear direction L may be longer than the front grid length L11, which is the length of one grid formed by the front grid compressed parts 551F in the front-rear direction L. In fig. 7, the spacing distance L3 is greater than the front lattice length L11. As shown in fig. 7, the third compression part 553 may be disposed at a position more anterior than the first compression part 551. In a plan view of the absorbent body 50, the area occupied by the third compressed parts 553 per unit area may be larger than the area occupied by the first compressed parts per unit area.

As described above, in the absorbent article of the modified example, the second compressed portions 552 are provided at positions separated from the first compressed portions 551 in a plan view of the absorbent body 50, and therefore, compared to a case where the first compressed portions 551 and the second compressed portions 552 are provided continuously, a force applied to one of the first compressed portions 551 and the second compressed portions 552 is less likely to be transmitted to the other. Therefore, the first and second

compressed portions

551 and 552 are less susceptible to mutual influences, and can exhibit the functions of the first and second

compressed portions

551 and 552, respectively.

In addition, when the distance L21 and/or the distance L22 in the front-rear direction L between the first compressed portion 551 and the second compressed portion 552 is longer than the length in the front-rear direction L of one lattice constituted by the first compressed portion 551, a force applied to one of the first compressed portion 551 and the second compressed portion 552 is more difficult to transmit to the other. Therefore, the first and

second compressing portions

551 and 552 can further function. Similarly, when the distance L3 between the first and

third compressing portions

551 and 553 in the front-rear direction L is longer than the length of one lattice constituted by the first compressing portions 551 in the front-rear direction L, the force applied to one of the first and

third compressing portions

551 and 553 is more difficult to transmit to the other. Therefore, the first and

third compressing portions

551 and 553 can function as each other.

In addition, since the area occupied by the rear lattice compressed portion 551R per unit area is larger than the area occupied by the front lattice compressed portion 551F per unit area in a plan view of the absorbent body 50, the rigidity of the region where the rear lattice compressed portion 551R is provided is high, and the rigidity of the region where the front lattice compressed portion 551F is provided is low. Therefore, on the front side from which urine is discharged, the absorbent body 50 is easily deformed because the front lattice compressing portion 551F maintains diffusibility and a region with relatively low rigidity is provided. This allows the absorbent body 50 to easily come close to the body of the wearer (specifically, the urination port), and therefore the absorbent body 50 can easily absorb urine. On the other hand, on the rear side where the feces are discharged, since the rear lattice compressing portion 551R maintains the diffusibility and a region with relatively high rigidity is provided, the absorbent body 50 is less likely to be deformed. This makes it difficult for the absorber 50 to enter the groin (cleft buttocks) of the buttocks, and ensures a space for receiving excrement (feces).

In addition, in a plan view of the absorbent body 50, the area occupied by the third compressed parts 553 per unit area is larger than the area occupied by the first compressed parts per unit area. Accordingly, the rigidity of the region where the third compressed portion 553 is provided is higher than the rigidity of the region where the first compressed portion 551 is provided, and therefore, deformation of the absorbent body 50 at the portion on the front side of the third compressed portion 553 can be suppressed.

(6) Other embodiments

While the present invention has been described in detail with reference to the above embodiments, it will be apparent to those skilled in the art that the present invention is not limited to the embodiments described in the present specification. The present invention can be implemented as modifications and variations without departing from the spirit and scope of the present invention defined by the claims. Therefore, the description of the present specification is for the purpose of illustration and description, and the present invention is not intended to be limited thereto.

In the above description, the second compression section 552 may be a compression section of another mode. For example, the second compressing portion 552 may be a plurality of dot-shaped compressing portions. The interval in the front-rear direction L between the plurality of dot-shaped compressed portions may be, for example, 3.5mm, and the interval in the width direction W between the plurality of dot-shaped compressed portions may be 1.5 mm. The third compression unit 553 may be a compression unit of another mode as well.

In the above-described method for producing the absorbent body 50, 2 pairs of rollers are used for the first and

second compressing devices

131 and 132, but the method is not limited thereto. By providing the first protrusion 151 and the second protrusion 152 on the upper and lower pair of rollers, the first compressed portion 551 and the second compressed portion 552 can be provided by the pair of rollers. For example, in the absorbent body 50 of the modification, the first compressed part 551 and the second compressed part 552 may be provided by a pair of rollers. In addition, the first compressing part 551, the second compressing part 552, and the third compressing part 553 may be provided by a pair of rollers. In addition, in the above, the second compression device 132 has the second convex portion 152 and the third convex portion 153, but is not limited thereto. The second compression device 132 may have the second projection 152 without the third projection 153. Therefore, the third compression device 553 may not be provided, and a third compression device different from the first compression device 131 and the second compression device 132 may have the third projection 153. In the case where the third compressing portion 553 is formed by being compressed deeper than the first compressing portion 551, the third compressing device may be disposed upstream of the first compressing device 131 in the conveying direction MD. In the case where the third compressing portion 553 is formed by being compressed deeper than the second compressing portion 552, the third compressing device may be disposed upstream of the second compressing device 132 in the conveying direction MD. In the case where the third compressing portion 553 is formed by being compressed shallower than the second compressing portion 552, the third compressing device may be disposed at a position on the downstream side in the conveying direction MD than the second compressing device 132.

In the method for producing the absorbent body 50, the second compressed part 552 and the third compressed part 553 are provided first, and the first compressed part 551 is provided later, but the method is not limited thereto. The first compression part 551 may be provided first, and the second compression part 552 and the third compression part 553 may be provided later. In the above-described method for producing the absorbent body 50, the absorbent core 51 and the core wrap sheet 52C are compressed, but the method is not limited thereto. In addition to the absorbent core 51 and the core wrap sheet 52C, it may also be compressed together with other sheets. The other sheet may be, for example, the skin sheet 41, or an auxiliary sheet disposed between the skin sheet 41 and the absorber 50. The structures of the absorbent article 1 of the above-described embodiment, each modification, and other embodiments may be appropriately combined.

It is noted that japanese patent application 2009-115012, filed on 20/6/2019, is incorporated herein by reference in its entirety.

Description of the reference numerals

1: absorbent article, 15: exterior body, 20: front-side outer body, 30: rear-side outer body, 40: absorbent main body, 50: absorber, 51: absorbent core, 515: bend-inducing portion, 52: core wrap, 55: compression section, 551: first compression portion, 551F: front lattice compression, 551R: rear grid compression part, 551 a: linear compression portion, 551 b: bending compression portion, 552: second compression portion, 553: third compression portion, 100: manufacturing apparatus, 120: cladding apparatus, 130: compression device, 131: first compression device, 140: cutting device

Claims

1. An absorbent article having:

a front-rear direction, a width direction orthogonal to the front-rear direction, and a thickness direction;

a front side region;

a posterior region;

a crotch region sandwiched by the front region and the rear region in the front-rear direction; and

an absorber disposed at least in the crotch region,

the absorbent body is provided with a compressed part compressed in the thickness direction, wherein,

the compression section has:

a first compressing section having a lattice-like pattern in a plan view of the absorbent body; and

and a second compressing section having a pattern different from the lattice-like pattern in a plan view of the absorbent body.

2. The absorbent article of claim 1,

the second compressed parts occupy a larger area per unit area than the first compressed parts per unit area in a plan view of the absorbent body.

3. The absorbent article of claim 2, wherein,

the second compression part is provided in the crotch region.

4. The absorbent article according to claim 3,

the crotch region has a rear crotch region located rearward of the center of the absorbent article in the front-rear direction,

the second compression part is provided in the rear crotch region.

5. The absorbent article according to any one of claims 1 to 4, wherein,

the second compressed portion is provided at a position separated from the first compressed portion in a plan view of the absorbent body.

6. The absorbent article according to claim 5,

in a plan view of the absorbent body, a distance between the first compressed part and the second compressed part in the front-rear direction is longer than a length of one cell formed by the first compressed part in the front-rear direction.

7. The absorbent article according to any one of claims 1 to 6, wherein,

the first compression part includes:

a front grid compression section provided on the front side of the center of the absorbent article in the front-rear direction; and

a rear grid compression part arranged at a position closer to the rear side than the center in the front-rear direction,

the absorbent body has a larger area occupied by the rear lattice compression parts per unit area than an area occupied by the front lattice compression parts per unit area in a plan view.

8. The absorbent article according to any one of claims 1 to 7, wherein,

the compressing section further includes a third compressing section having a pattern different from the lattice-like pattern in a plan view of the absorbent body,

the third compression part is provided at a position on the front side of the second compression part.

9. The absorbent article of claim 8,

the third compression part is arranged at the front side of the first compression part,

the third compressed parts occupy a larger area per unit area than the first compressed parts per unit area in a plan view of the absorbent body.

10. The absorbent article according to claim 8 or 9,

the absorbent body having an absorbent core comprising a liquid-absorbing absorbent material,

the absorbent core has a narrowing portion in the crotch region, the narrowing portion narrowing inward in the width direction at both side edges in the width direction of the absorbent core in a plan view of the absorbent body,

the third compressing portion is provided at a position on the front side of the narrowed portion.

11. The absorbent article according to any one of claims 8 to 10, wherein,

has an exterior body provided at least in the front side region,

the third compressed portion overlaps the outer package in the thickness direction.

12. The absorbent article according to any one of claims 8 to 11,

the third compressed portion extends in the width direction so as to straddle the center in the width direction of the absorbent article and to form a convex shape toward the rear side in a plan view of the absorbent body.

13. The absorbent article according to any one of claims 1 to 12, wherein,

the first compression part is formed of a plurality of compression parts intermittently provided so as to have the lattice-like pattern.

14. A method for producing an absorbent body for an absorbent article, wherein,

having a compression step of providing a compressed portion by compressing at least the absorbent core in the thickness direction,

in the compressing step, the first compressing section having a lattice-like pattern in a plan view of the absorbent body and the second compressing section having a pattern different from the lattice-like pattern in a plan view of the absorbent body are provided as the compressing sections.

15. The method for producing an absorbent body according to claim 14, wherein,

the compressing step includes a step of covering the absorbent core with a core covering sheet constituting a core covering section,

in the compressing step, the absorbent core and the core wrap sheet are compressed to provide the compressed portion.

16. The method for producing an absorbent body according to claim 15, wherein,

the compression step includes the steps of:

a step of providing the first compression portion by compressing the absorbent core and the core wrap sheet by a first projection provided on an outer peripheral surface of at least one of a pair of first rollers; and

and a step of providing the second compression portion by compressing the absorbent core and the core wrap sheet by a second projection provided on the outer peripheral surface of at least one of the pair of second rollers.

17. The method for producing an absorbent body according to claim 16, wherein,

in the compressing step, when one of the first compressing section and the second compressing section is provided in a compressing region in which the other compressing section is provided, the absorbent core and the core wrap sheet are compressed only in a partial region of the compressing region in the conveying direction.

18. The method for producing an absorbent body according to claim 16 or 17, wherein,

the compression step includes the steps of:

a step of providing one of the first compression part and the second compression part that is compressed deeply in the thickness direction; and

and a step of providing the other of the first compression part and the second compression part after providing the one compression part.

19. An apparatus for manufacturing an absorbent body, which is an absorbent body of an absorbent article, wherein,

having a compressing means for providing a compressing portion by compressing at least the absorbent core with a plurality of projections,

the plurality of projections have:

a first convex portion provided with a first compressed portion having a lattice-like pattern in a plan view of the absorbent body; and

and second protrusions provided with second compressed parts having a pattern different from the lattice-like pattern in a plan view of the absorbent body.