JP6572835B2 - Absorbent article and method for manufacturing absorbent article - Google Patents

Description

  The present case relates to an absorbent article such as a disposable diaper or a sanitary napkin and a method for producing the absorbent article.

Conventionally, an absorbent article is provided with an absorbent body extending in the longitudinal direction connecting the abdomen side and the back side of the wearer. By this absorber, liquids such as excreted urine and menstrual blood are absorbed.
However, if the absorbent body is irregularly bent or twisted, the feel of the wearer and the liquid absorbability may be lowered, and the wearer's comfort may not be ensured. For example, since the site | part arrange | positioned in a wearer's inseam in an absorber is a main site | part from which a liquid is excreted, it should be closely_contact | adhered to a wearer and should be mounted | worn.

Thus, a technique has been developed for bending and holding the absorbent body in a predetermined shape in a state where the absorbent article is attached to the wearer.
For example, there has been proposed an absorbent article provided with an elastic member that contracts the absorbent body in the longitudinal direction in addition to the groove-like portion in which the crotch portion of the absorbent body is recessed along the longitudinal direction. According to this absorbent article, since the bending of the absorbent body is guided by the groove-shaped portion, the absorbent body can be folded into a predetermined shape. Furthermore, since the absorber folded by the elastic member is lifted to the skin surface side of the wearer, the folded absorber can be held (see Patent Document 1).

JP-A-2015-66308

  However, when absorbent articles are used, the absorbent body of the absorbent article is deformed by the movement of the wearer, or the absorbent body is loaded or softened due to moisture absorption, and the rigidity gradually decreases. I will do it. For this reason, there exists a possibility that the shape by which the principal part of the absorbent article was lifted by the wearer's skin surface may not be hold | maintained, and there exists room for improvement in continuing improvement of a wearer's comfort.

The absorbent article of the present invention has been created in view of the above-described problems, and is intended to ensure the wearer's comfort.
It should be noted that the present invention is not limited to the purpose here, and is an operation and effect derived from each configuration shown in the `` Mode for Carrying Out the Invention '' to be described later, and can also exhibit an operation and an effect that cannot be obtained by conventional techniques. It can be positioned as another purpose of this case.

(1) The absorbent article disclosed herein is an absorbent article having an absorbent body, and at least in a crotch part disposed in the crotch of the wearer, a pair of absorbent articles provided in the absorbent body along the longitudinal direction. A groove-shaped portion and a pair of elastic portions provided in the absorbent body extending in the longitudinal direction at least in the crotch portion, and the elastic portions are arranged outside the groove-shaped portions in the width direction. And a high-rigidity part having higher rigidity than other parts of the absorber is provided outside the region between the groove-like parts of the absorber and outside the region .

  (2) It is preferable that the said groove-shaped part is provided in the intermediate part except the longitudinal direction both ends of the said absorber.

(3) pre-Symbol high-rigidity area is preferably provided in the installation area of the elastic portion of the outside of the region and the region between each other the groove portion.

( 4 ) It is preferable that the high-rigidity portion is provided symmetrically with respect to the center line in the width direction.

( 5 ) It is preferable that a concavo-convex pattern is formed on the highly rigid portion.

( 6 ) It is preferable that the said uneven | corrugated pattern is formed in the said skin surface side of the said absorber.

( 7 ) It is preferable that the said uneven | corrugated pattern is comprised including the linear pattern which is a several groove | channel where the recessed part extended linearly in the said width direction.

( 8 ) It is preferable that the linear pattern includes any one of a linear pattern, a wavy line pattern, a circular curve pattern, and an elliptic curve pattern.

( 9 ) It is preferable to have a back sheet and a cover sheet that cover the absorbent body from the non-skin surface side, and the front body, the crotch part, and the back body are provided in this order in the longitudinal direction.

(1 0 ) A front patch provided in the widthwise intermediate portion of the front body and a fastening portion that extends outward to each of the widthwise both ends of the back body and is fastened to the front patch. And a fastening tape.

(1 1 ) The manufacturing method of the absorbent article disclosed herein is a manufacturing method of manufacturing the absorbent article described in any one of (1) to (1 0 ), wherein the absorbent body is pressed. A first step of processing the high-rigidity portion by processing; a second step of recessing the groove-like portion by pressing on the skin surface side of the absorber; and arranging the elastic portion outside the groove-like portion. And a third step to be provided.

(1 2 ) It is preferable to implement the second step after the first step.

According to the absorbent article of the present invention, when worn, the absorbent body is bent at the groove-like portion by the elastic portion while contracting in the longitudinal direction, and the space between the groove-like portions is lifted to the skin surface side of the wearer. Thereby, since an absorber adheres to a wearer and absorbs excretion etc. rapidly, a wearer's comfort can be improved.
In the absorbent article, the rigidity decreases with the passage of wear time, and it becomes difficult to maintain the shape in which the space between the groove portions is lifted to the wearer's skin side, but the high rigidity portion is between the groove portions of the absorbent body. Since it is provided, rigidity is enhanced by the high-rigidity part, the shape is easily held for a long time, and the wearer's comfort can be improved for a long time.

It is a top view of the developed paper diaper (absorbent article) concerning a 1st embodiment. It is a perspective view which decomposes | disassembles and shows the paper diaper of FIG. It is sectional drawing (alpha-alpha sectional drawing of FIG. 1) which shows the principal part in the paper diaper of FIG. It is sectional drawing which shows the principal part in the paper diaper of a mounting state. It is a flowchart explaining the manufacturing method of the paper diaper (absorbent article) which concerns on each embodiment. It is a top view of the developed paper diaper (absorbent article) concerning a 2nd embodiment. It is a top view of the developed paper diaper (absorbent article) concerning a 3rd embodiment. It is a top view of the developed paper diaper (absorbent article) concerning a 4th embodiment.

  With reference to the drawings, an absorbent article as an embodiment will be described. Note that the embodiment described below is merely an example, and there is no intention to exclude various modifications and technical applications that are not explicitly described in the following embodiment. Each configuration of the present embodiment can be implemented with various modifications without departing from the spirit thereof. Further, they can be selected as necessary, or can be appropriately combined.

  The absorbent article of this embodiment is a sanitary article that is worn by a wearer and absorbs liquid such as urine and menstrual blood. Examples of the absorbent article include tape-type and pants-type paper diapers (so-called “disposable diapers”), urine pads, sanitary napkins, panty liners, and the like. In the following embodiment, a tape-type paper diaper is illustrated as an absorbent article.

  In this embodiment, about a paper diaper, let the direction which connects the front body arrange | positioned facing a wearer's abdomen and the back body arrange | positioned facing a back part be a longitudinal direction. Inseam placed between the front body (one side in the longitudinal direction) and the back body (the other side in the longitudinal direction) (center in the longitudinal direction) is placed on the wearer's crotch (placed opposite the crotch) The part is located. Further, in a state where a paper diaper is worn by the wearer (hereinafter abbreviated as “wearing state”), the side facing the wearer's skin (inside when worn) is the skin side, and the opposite side of the skin side (Outside when worn) is the non-skin side. Furthermore, a direction connecting the skin surface side and the non-skin surface side is a thickness direction, and a direction orthogonal to both the longitudinal direction and the thickness direction is a width direction. In addition, viewing from the thickness direction is a plan view.

[I. First Embodiment]
[1. Paper diaper]
[1-1. Basic configuration]
First, the basic configuration of the disposable diaper 1 will be described with reference to FIGS. 1 and 2. This paper diaper 1 is formed symmetrically with respect to the center line C in the width direction. In addition, in FIG. 2, about the code | symbol which shows the center line of the width direction in each member, the code | symbol which shows each member is added by subscript to code | symbol "C".
The paper diaper 1 is roughly divided into three regions along the longitudinal direction: a front body 1A, a crotch 1B, and a back body 1C.

The paper diaper 1 is provided with a fastening tape 2 protruding in the width direction at the back body 1C, and a front patch 3 (shown by a broken line in FIG. 1) on the most non-skin surface side of the front body 1A. Here, a breathable front patch 3 is used. The paper diaper 1 is mounted on the wearer by the fastening tape 2 being fastened to the front patch 3.
Moreover, the width direction dimension of the crotch part 1B is set to be slightly larger than the dimension between the bases of both legs of a general wearer. Therefore, in the mounted state, the crotch part 1B sandwiched in the width direction is bent. In this state, the fold extends in the longitudinal direction.

Next, sheets constituting the disposable diaper 1 will be described with reference to FIGS.
The paper diaper 1 is provided with an absorbent body 12 (indicated by a thick broken line in FIG. 1) extending in the longitudinal direction over the front body 1A, the crotch 1B, and the back body 1C. In FIG. 1 and FIG. 2, the absorber 12 whose width direction dimension is smaller than the front body 1A and the back body 1C is illustrated as an example. However, you may use the absorber 12 with a fixed width direction dimension.

The absorber 12 is a member that absorbs and holds liquid excreted from the wearer. Since this absorber 12 has a mat shape, it will be referred to as “mat 12” in the following description.
For example, a core in which a superabsorbent polymer (so-called SAP <Superabsorbent polymer>, also referred to as a superabsorbent polymer or superabsorbent polymer) is mixed with pulverized or defibrated pulp (so-called “fluff pulp”). What is encapsulated (wrapped) with a wrap sheet is used for the mat 12.

Various sheets described below are laminated on the skin surface side and the non-skin surface side with respect to the mat 12.
A top sheet 11 is laminated on the skin surface side of the mat 12.
The top sheet 11 is disposed on the most skin side in the paper diaper 1. The top sheet 11 has a property (liquid permeability) that allows the liquid to pass through in order for the mat 12 to absorb the liquid excreted from the wearer. The top sheet 11 covers the skin surface side of the mat 12.

Further, a side sheet 10 is provided on each side in the width direction with respect to the top sheet 11 and the mat 12.
As with the top sheet 11, the side sheet 10 is disposed on the most skin side in the disposable diaper 1. The side sheet 10 has a property of not allowing liquid to pass through (liquid impermeability) in order to prevent leakage of excreted liquid.

As shown in FIGS. 1 and 2, the cover sheet 14 is disposed on the most non-skin surface side in the crotch part 1 </ b> B and the back body 1 </ b> C of the disposable diaper 1. The cover sheet 14 is provided to reinforce the back sheet 13 and improve the tactile sensation (for example, touch), and covers the back sheet 13 from the non-skin surface side.
The back sheet 13 has liquid impermeability in order to prevent liquid leakage from the mat 12. The back sheet 13 covers the mat 12 from the non-skin surface side. For example, a thermoplastic resin sheet such as polyethylene (PE) or polypropylene (PP) is used for the back sheet 13.

The cover sheet 14 is arranged on the most non-skin surface side in the paper diaper 1. The cover sheet 14 is provided to reinforce the back sheet 13 and improve the tactile sensation (for example, touch), and covers the back sheet 13 from the non-skin surface side.
The cover sheet 14 is not limited to a single layer structure, and may be a multilayer structure including an inner cover sheet and an outer cover sheet.

A front patch 3 is attached to the non-skin surface side of the cover sheet 14.
The front patch 3 constitutes a fastening mechanism together with the fastening tape 2, and the fastening tape 2 is provided at each of both end portions in the width direction of the back body 1C. In FIG. 1 and FIG. 2, the fastening tape 2 provided in two each on the width direction both sides of the back body 1C is illustrated. However, it is sufficient that at least one fastening tape 2 is provided on both sides in the width direction. These fastening tapes 2 extend outward in the width direction from each of both edges of the back body 1C.

In the present embodiment, as a fastening mechanism that fixes the fastening tape 2 and the front patch 3, a planar fastener that is fixed by mechanical coupling of a hook material (male member) and a loop material (female member) is used.
The surface fastener is constituted by a combination of a hook material having a large number of protrusions (for example, a hook shape or a mushroom shape) formed on the surface and a loop material having a loop-shaped fiber disposed on the surface. That is, either one of the fastening tape 2 and the front patch 3 is provided with a hook material, and the other is provided with a loop material. By using the planar fastener, the hook material and the loop material can be firmly fixed while being peelable, and repeated use is also possible.
However, you may use an adhesive, an adhesive tape, etc. for a fastening mechanism.

[1-2. Detailed configuration]
Next, a detailed configuration of the disposable diaper 1 will be described with reference to FIGS.
Here, a structure for bending and holding the crotch part 1B in a predetermined shape in the mounted state (hereinafter referred to as “folded holding structure”) will be described. In addition, since irregular bending and twisting of the crotch part 1B lowers the comfort of the wearer, the bending holding structure is provided to secure the wearer's comfort by bending the crotch part 1B into a predetermined shape. It is provided on the disposable diaper 1.
As this bending holding structure, a one-dimensional embossed portion (hereinafter simply referred to as an embossed portion) 20 is provided as a groove-like portion for folding the shape of the crotch 1B into a predetermined shape, and the crotch is bent into a predetermined shape. A support gather 31 for holding the shape of the part 1B is provided.

Further, the mat 12 is provided with a configuration for maintaining the state where the crotch 1B is bent into a predetermined shape by the embossed portion 20 for a long time.
That is, in the mat 12, the high rigidity portion 121 having higher rigidity than the other portions of the mat 12 is provided between the embossed portions 20 and 20. Note that the high-rigidity portion 121 has a concavo-convex pattern 121a composed of a concave portion and a convex portion, and is made highly rigid by forming the concavo-convex pattern 121a. About the uneven | corrugated pattern 121a, the recessed part is shown in FIG. 1, and it abbreviate | omits in FIG.

<Embossed part>
The embossed part 20 extends in the longitudinal direction in the crotch part 1B and is recessed, and is at least a pair (two) of parts. In addition, the embossed part 20 is not provided in the front body 1A and the back body 1C.
Here, the embossed portion 20 is provided on the top sheet 11 and the mat 12. That is, the embossed portion 20 is disposed on the skin surface side of the paper diaper 1. In addition, the embossing part 20 should just be provided in the mat | matte 12 at least, and does not need to be provided in the top sheet 11. FIG.

The embossed portion 20 can be recessed (embossed) by partially pressing (squeezing) the mat 12 on which the top sheet 11 is laminated. In this case, the mat 12 provided with the embossed portion 20 is pressed (consolidated). In other words, the embossed portion 20 is formed by pressing the mat 12.
1 and 2 exemplify linear embossed portions 20 that are symmetrically arranged with respect to the center line C in the width direction and that are parallel to each other and form a pair of two. However, the embossed portion 20 may have a shape that is separated or approached from one side in the longitudinal direction to the other side, or may have another shape such as an arc shape or a wave shape. Furthermore, three or more embossed portions 20 may be provided.

<High rigidity part>
In this embodiment, the concavo-convex pattern 121a is formed between the embossed portions 20 and 20 of the mat 12 on which the top sheet 11 is laminated. However, the concavo-convex pattern 121a only needs to be provided at least on the mat 12, and the top The sheet 11 may not be provided.

  As shown in FIG. 1, in this embodiment, the concave / convex pattern 121a is a plurality of grooves whose recesses extend in a line parallel to each other in the width direction when the top sheet 11, the side sheet 10 and the mat 12 are viewed from the front. It is a certain linear pattern, and in particular, it is a wavy line pattern composed of a plurality of grooves extending in a wavy line shape.

  The wavy line pattern 121a increases the rigidity in the width direction of the mat 12 appropriately, so that it is difficult to bend when the mat 12 is bent into a predetermined shape. Is also easier to hold. The wavy pattern 121a is formed symmetrically (linearly symmetric) or substantially symmetrically with respect to the center line C in the width direction.

  The concave / convex pattern 121a is also recessed (embossed) by pressing the mat 12 on which the top sheet 11 and the side sheet 10 are laminated at a portion corresponding to the concave portion of the concave / convex pattern 121a (also referred to as pressing or pattern pressing). can do. In this case, in the mat 12, the portion of the mat 12 corresponding to the concave portion of the concavo-convex pattern 121a is reduced in thickness by pressing, and at the same time the density is increased (consolidated) and cured. However, since the convex part of the uneven | corrugated pattern 121a is not squeezed, a softness | flexibility remains.

  Therefore, in this embodiment, the uneven pattern 121a is formed on the skin surface side of the mat 12 together with the top sheet 11 and the side sheet 10, and the convex part of the uneven pattern 121a that is flexible and has good tactile sensation touches the wearer's skin. The concave portion of the concave / convex pattern 121a that hardens and increases the rigidity but decreases the tactile sensation is prevented from touching the wearer's skin. Since the rigidity of the mat 12 is increased by the concave portions of the concave / convex pattern 121a, the state where the crotch portion 1B is bent into a predetermined shape by the embossed portion 20 can be maintained for a long time.

Note that, from the viewpoint of simply increasing the rigidity of the mat 12, the uneven pattern 121a may be formed on the non-skin surface side of the mat 12. Of course, the concavo-convex pattern 121a may be formed on both the skin surface side and the non-skin surface side of the mat 12. In this case, on the skin surface side, the convex portions of the concavo-convex pattern 121a having good tactile sensation touch the wearer's skin. In addition, the concave portion of the concave / convex pattern 121a where the tactile sensation decreases does not touch the wearer's skin.
Incidentally, when the embossed portion 20 is guided from folding the crotch portion 1B in a predetermined shape, so uneven pattern 121 a is not to prevent this, the uneven pattern 121 a is press weak than embossed portion 20 I try to add it.
In the mat 12 having a plurality of layers, the concavo-convex pattern 121a is formed only for a single layer or a part of the layer, not for the entire layer, while the embossed portion 20 includes at least all the layers containing pulp ( It may be formed for more layers than the layer of the concavo-convex pattern 121a, such as two or more layers. These, the density of the mat 12 immediately below the recess of the uneven pattern 121 a is lower than the density of the mat 12 just under the embossed portion 20.

<Support gathers>
The support gather 31 is a part for lifting and supporting the mat 12 to the skin surface side in the mounted state. The support gather 31 is disposed on the outer side in the width direction than the embossed portion 20. Here, in the region of the crotch portion 1B, the support gathers 31 are arranged at positions where at least a portion thereof overlaps the mat 12 in the thickness direction (in plan view).
Moreover, in the support gather 31, the paper diaper 1 brought together is extended in the longitudinal direction. Here, a support gather 31 is provided over the front body 1A and the crotch 1B.

The support gather 31 is formed by a pair of first elastic members 41 (elastic portions, indicated by two-dot chain lines in FIG. 1).
Similar to the support gather 31, the first elastic member 41 is disposed on the outer side in the width direction from the embossed portion 20 at a position where at least a portion thereof overlaps the mat 12 in a plan view in the region of the crotch 1B. It is provided along. Here, the first elastic member 41 is arranged in parallel with the embossed portion 20.
The first elastic member 41 is provided to contract the mat 12 in the longitudinal direction. Specifically, the first elastic member 41 is interposed between the back sheet 13 and the cover sheet 14, and at least within the range of the crotch 1 </ b> B of the sheets 13, 14 and the extended first elastic member 41. Are fixed to each other by gluing or sewing. Therefore, the sheets 13 and 14 are pulled together by the elastic force of the first elastic member 41 in the contraction direction, and the mat 12 is contracted in the longitudinal direction.

In addition to the support gather 31 described above, a three-dimensional gather 32 and a leg gather 33 are also provided in the paper diaper 1.
The three-dimensional gather 32 is provided to prevent the excreted liquid from leaking outward in the width direction. In this three-dimensional gather 32, the width direction inner side edge part of the side seat | sheet 10 is standingly arranged on the skin surface side by the 2nd elastic member 42 (it shows with a dense broken line in FIG.1 and FIG.2), and is brought near.
The leg gather 33 is provided in order to improve the followability to a wearer's leg part. The leg gathers 33 protrude in the width direction, and the width direction outer edge portion of the side seat 20, the width direction outer edge portion of the cover sheet 14, and the width direction outer edge portion of the back sheet 13 are third elastic members. 43 (shown by sparse broken lines in FIG. 1).

  In FIG. 1 and FIG. 2, three first elastic members 41, two second elastic members 42 provided one by one, and third elastic members provided two by one in each of one and the other in the width direction. The member 43 is illustrated. However, depending on the width direction region of the gathers 31, 32, 33 designed in the paper diaper 1 and the elastic force (contraction force) required for the support gathers 31, 32, 33, various numbers, elastic forces, or types of Elastic members 41, 42, and 43 can be employed. As the elastic members 41, 42, and 43, for example, thread rubber, natural rubber, or an elastic film can be used.

[2. Used paper diapers]
Next, the crotch part 1B in the mounted state will be described with reference to FIG.
In the mounted state, the crotch 1B is bent into a predetermined shape. Specifically, the cross section in the width direction of the crotch part 1B is bent into a predetermined shape having a “W” shape. The V-shaped portion 51 and 52 are referred to as one V-shaped portion and the other V-shaped portion, similar to the two V-shaped portions. Moreover, if the position of a crease | fold is a skin surface side, it will call a mountain fold, and if it is a non-skin surface side, it will call a valley fold.

In this mounted state, the embossed portion 20 serves as a fold to guide the valley break of the crotch 1B. Specifically, two valley folds are guided by folding the crotch portion 1B with the two embossed portions 20 as folds. And the two embossing parts 20 are located in the site | part corresponding to each corner | angular part of the V-shaped parts 51 and 52. FIG. In the crotch part 1B at this time, the intermediate part in the width direction of the two embossed parts 20 is mountain-folded in an inverted V shape, and the center in the width direction becomes a fold.
In the crotch portion 1B bent in a predetermined shape as described above, the support gathers 31 formed by the first elastic members 41 are located outside the V-shaped portions 51 and 52 in the width direction. The mat 12 is contracted in the longitudinal direction by the first elastic member 41 or the support gather 31, and the crotch part 1B is lifted to the skin side as a whole.
[3. Production method]

Below, the manufacturing method of the absorbent article which concerns on this embodiment is demonstrated.
As shown in FIG. 5, first, the mat 12 is formed (step S10). That is, a core in which SAP is mixed with fluff pulp is encapsulated (wrapped) with a wrap sheet and cut into a predetermined length.

  Next, the belt-like top sheet 11, the side sheet 10, the back sheet 13 and the cover sheet 14 are all run while the mat 12 is sandwiched between the top sheet 11 and the side sheet 10 and the back sheet 13. The process is started (step S20). It is assumed that the fastening tape 2 is affixed to the cover sheet 14 or the side sheet 10 in advance. In this laminating step, the sheets 10 to 14 are bonded together while traveling in a predetermined layer arrangement.

  In parallel with the processing of the laminating process, the mat 12 (here, on the skin surface side of the mat 12) a first pressing process (first process, step S30) for processing the uneven pattern 121a by pressing, the mat The second pressing step (second step, step S40) in which the embossed portion 20 (groove-shaped portion) is provided by pressing on the skin surface side of the twelve skin surface, and the first elastic member (elastic portion) 41 on the outside of the embossed portion 20 And a gathering process (third process, step S50) in which the second elastic member 42 and the third elastic member 43 are disposed.

  Of these, the gathering process can be performed simultaneously with the first press process and the second press process, but the first press process and the second press process cannot be performed simultaneously with each other. Therefore, the first press process and the second press process are performed in this order. That is, after processing the concavo-convex pattern 121a, the embossed portion 20 is recessed.

Thus, by processing in the order of the first press process and the second press process, the groove of the second press process of the post-processing remains stronger on the mat 12, so that the embossed portion 20 is formed on the uneven pattern 121 a. Preferentially formed.
Further, in the second pressing step, pressing is performed with a higher pressing force than in the first pressing step. That is, in the 1st press process, it presses with a medium pressure and in a 2nd press process, it presses with a high pressure. Also by this, the embossed portion 20 is formed with higher priority than the uneven pattern 121a.

  In addition, in the 1st press process and the 2nd press process, after performing water spray to the process location of the mat | matte 12, you may press. When pressure molding is performed in a state where moisture is contained in the mat 12 by water spraying, the pressure-molded shape is easily held in a clearer state due to subsequent evaporation of moisture.

  The first pressing process, the second pressing process, and the gathering process are completed by the end of the laminating process, and when the laminating process is completed (step S60), the crotch cut or the side sheet 10 side is folded to the top sheet 11 side. Processing is performed (step S70), product cutting is performed (step S80), and manufacturing is completed.

[3. Action and effect]
Since the paper diaper is configured as described above, the following operations and effects can be obtained.
According to the paper diaper 1 of the present embodiment, the mat 12 can be reliably bent at the embossed portion 20. Furthermore, the mat 12 is contracted in the longitudinal direction by the first elastic member 41, whereby the mat 12 can be lifted to the skin surface side and the folding of the mat 12 at the embossed portion 20 can be reliably held.
Therefore, the crotch part 1B of the disposable diaper 1 is bent and held in a predetermined shape in the mounted state, and the tactile sensation and the liquid absorption can be secured to improve the wearer's comfort.

In particular, since the uneven pattern 121a is formed between the embossed portions 20 and 20 of the mat 12 on which the top sheet 11 is laminated to form a highly rigid portion 121, this increases the rigidity of the main portion of the mat 12. When the mat 12 is bent by the embossed portion 20 and the first elastic member 41, this state is easily maintained.
Therefore, even when the paper diaper 1 is continuously used for a long period of time, the folded state of the mat 12 can be easily maintained, and the tactile sensation and liquid absorption can be secured to improve the wearer's comfort over a long period of time. it can. Further, except for the region between the embossed portions 20, the improvement in rigidity is suppressed, and it becomes easy to ensure a good tactile sensation.

The concavo-convex pattern 121a constituting the high-rigidity portion 121 of the present embodiment is a wavy line pattern, and in order to appropriately increase the rigidity in the width direction of the mat 12, when the mat 12 is bent into a predetermined shape, resistance to bending is reduced. It is difficult to be formed, and it is easy to hold the shape in the width direction and the longitudinal direction after bending.
In addition, since the high-rigidity portion 121 is formed symmetrically with respect to the center line C in the width direction, it is easy to maintain the state where the mat 12 is bent into a symmetrical shape with respect to the center line C.

Further, the uneven pattern 121a is formed by applying a press that is weaker than the embossed portion 20, or in the mat 12 in the case of a plurality of layers, the embossed portion 20 is formed on all the layers containing pulp. and, in Rukoto forming form only for the uneven pattern 121a is a portion of the layer, it is lower than the density of the mat 12 density of the mat 12 immediately below the concave portion of the concavo-convex pattern 121 a is just under the embossed portion 20. Since the embossed portion 20 is pressed after the pressing of the concavo-convex pattern 121a, the embossed portion 20 is preferentially formed, and the concavo-convex pattern 121a is formed when the mat 12 is bent into a predetermined shape. However, this also makes it difficult to prevent this, and also from this point, it is possible to ensure the tactile sensation and the liquid absorption and to improve the wearer's comfort over a long period of time.

  Moreover, since the uneven | corrugated pattern 121a is formed in the skin surface side, the convex part of the uneven | corrugated pattern 121a which is flexible and has a favorable tactile sensation touches the wearer's skin and cures to increase the rigidity but the tactile sensation decreases. The concave portion of the pattern 121a is prevented from touching the wearer's skin, and a good tactile sensation can be ensured while increasing the rigidity of the mat 12, and the wearer's comfort can be ensured also from this point.

Since the support gather 31 and the first elastic member 41 are disposed on the outer side in the width direction than the embossed portion 20, the mat 12 is biased to be lifted to the skin surface side from the outer side in the width direction of the valley fold at the embossed portion 20. Therefore, it is possible to reliably hold the bent in a predetermined shape.

Hereinafter, other configuration examples of the high-rigidity part will be described as second to fourth embodiments.
The high-rigidity parts 121 to 123 of the first embodiment and the following second and third embodiments are configured as a high-rigidity part in which the uneven pattern is arranged in a two-dimensional region in the width direction and the longitudinal direction. In addition, the high-rigidity portion 124 of the fourth embodiment is configured without using an uneven pattern.

[II. Second Embodiment]
Next, a second embodiment will be described.
As shown in FIG. 6, the disposable diaper 1 of the present embodiment is different from the first embodiment only in the concave / convex pattern constituting the high-rigidity portion, and the other configurations are the same. The manufacturing method is the same as that of the first embodiment.

As shown in FIG. 6, the high-rigidity portion 122 of the present embodiment is formed with a concavo-convex pattern 122a. The concavo-convex pattern 122 a is a linear pattern having a plurality of grooves in which concave portions extend linearly in parallel with each other in the width direction, and is provided between the embossed portions 20, 20 here . Further, here, like the concave / convex pattern 122a, the concave portions are formed in a plurality of groove shapes extending in a straight line parallel to each other in the width direction so as to intersect the support gather 31 and the first elastic member 41. An uneven pattern 122b is provided as a linear pattern.

Therefore, the rigidity between the embossed portions 20 and 20 is enhanced by the high-rigidity portion 122 of the concave / convex pattern 122a, and even when the paper diaper 1 is continuously used for a long time, the folded state of the mat 12 is easily maintained. It is possible to improve the wearer's comfort over a long period of time by ensuring tactile sensation and liquid absorption. In addition, the concave and convex pattern 122a extending linearly parallel to each other in the width direction is easily bent in the longitudinal direction so that the crotch portion 1B can be easily bent in the longitudinal direction and easily fits the wearer's skin. An effect is also obtained.
Further, the concave / convex pattern 122b provided to intersect with the support gather 31 and the first elastic member 41 is also easily bent in the longitudinal direction so that the crotch portion 1B is easily bent in the longitudinal direction. Thus, the effect of easily fitting to the wearer's skin can be obtained.

[III. Third Embodiment]
Next, a third embodiment will be described.
As shown in FIG. 7, the disposable diaper 1 of this embodiment is different from the first embodiment only in the concave / convex pattern, and the other configurations are the same. The manufacturing method is the same as that of the first embodiment.

As shown in FIG. 7, the high-rigidity portion 123 is also formed with a concavo-convex pattern 123 a in this embodiment. The concave / convex pattern 123 a is a linear pattern in which a concave portion is formed by an oval groove extending in the width direction and a plurality of oval grooves are arranged, and is provided between the embossed portions 20 and 20.
Such a concavo-convex pattern 123a moderately increases the rigidity of the mat 12 in the width direction. Therefore, when the mat 12 is bent into a predetermined shape, it is difficult to bend, and after bending, the shape is also elongated in the width direction. It becomes easy to hold in the direction.

Therefore, even when the paper diaper 1 is continuously used for a long period of time due to the uneven pattern 123a of the high-rigidity portion 123, the folded state of the mat 12 is easily maintained, and the tactile sensation and the liquid absorption are ensured. The comfort can be improved over a long period of time.

[IV. Fourth Embodiment]
Next, a fourth embodiment will be described.
As shown in FIG. 8, the disposable diaper 1 of this embodiment is different from the first embodiment only in the high-rigidity part, and the other configurations are the same. The manufacturing method is the same as that of the first embodiment.
That is, the high-rigidity portion 124 of the present embodiment is formed by pressing the area between the embossed portions 20 to be solid (that is, uniformly).

  Such a high-rigidity portion 124 also partially increases the rigidity of the region between the embossed portions 20 and makes it easier to hold the state in which the mat 12 is bent into a predetermined shape in the longitudinal direction.

[IV. Others]
The support gather 31 and the first elastic member 41 are not limited to those provided symmetrically in the width direction, and may extend in the longitudinal direction along the center in the width direction. In this case, the paper diaper 1 can be easily bent along the center line C in the width direction, and the wearer's comfort can be improved.
Further, the groove-shaped portion may be processed by other than press working. For example, instead of the embossed portion 20, a groove-shaped portion in which the mat 12 corresponding to the corresponding portion is thinned or penetrated may be provided in the mat 12.

The concave / convex pattern of the high-rigidity portion may be a dot-shaped pattern in which the concave portion is a dot-shaped groove and the dot-shaped groove is arranged in a two-dimensional region.
Further, the high-rigidity part may be a combination of the above-described various uneven patterns.
Further, the high-rigidity area is not an entire region of the mutual embossings, some mutual embossed portion may be placed, not line symmetrical or substantially symmetrical with respect to the center line C in the width direction May be.

Moreover, you may process a highly rigid part other than press processing. For example, even if the mat 12 is partially thick, a highly rigid portion can be formed.
Further, the embossed portion 20 may be provided on the non-skin surface side of the mat 12 or may be provided on the skin surface side and non-skin surface side of the mat 12.
Furthermore, the embossed part 20 may be provided in a part of the front body 1A and the back body 1C.

1 disposable diaper (absorbent article)
1A Front body 1B Crotch 1C Rear body 2 Fastening tape 3 Front patch 10 Side sheet 11 Top sheet 12 Mat (absorber)
13 Back sheet 14 Cover sheet 20 Embossed part (grooved part)
31 Support gathers 41 First elastic member (elastic part)
51, 52 V-shaped part 121-124 High rigidity part 121a Concavity and convexity pattern (lattice pattern) constituting the high rigidity part
122a Concavity and convexity pattern (wavy line pattern) constituting a highly rigid portion
123a Concave and convex pattern (dot pattern) that constitutes a highly rigid part
C Center line in the width direction

Claims (12)

An absorbent article having an absorbent body,
At least in the crotch part disposed in the crotch of the wearer, a pair of groove-like parts provided in the absorbent body along the longitudinal direction;
At least in the crotch portion, and a pair of elastic portions provided in the absorber extending in the longitudinal direction,
The elastic portions are provided side by side on the outside of the groove-shaped portions in the width direction,
An absorbent article, characterized in that a high-rigidity portion having higher rigidity than other portions of the absorber is provided in a region between the groove-like portions of the absorber and outside the region . The absorbent article according to claim 1, wherein the groove-shaped portion is provided in an intermediate portion excluding both end portions in the longitudinal direction of the absorbent body . Before SL rigid portion, the region and absorption properties according to claim 1 or 2, characterized in that provided in the installation area of the elastic portion of the outside of the region between each other said groove portion Goods. The absorbent article according to any one of claims 1 to 3 , wherein the high-rigidity part is provided in line symmetry with respect to the center line in the width direction. The absorbent article according to any one of claims 1 to 4 , wherein an uneven pattern is formed on the high-rigidity portion. The said uneven | corrugated pattern is formed in the said skin surface side of the said absorber, The absorbent article described in Claim 5 characterized by the above-mentioned. The absorbent article according to claim 5 or 6 , wherein the uneven pattern includes a plurality of groove patterns extending linearly in the width direction. The absorbent article according to claim 7 , wherein the plurality of groove patterns include a linear pattern, a wavy pattern, a circular pattern, or an elliptical pattern. A back sheet and a cover sheet for covering the absorbent body from the non-skin surface side;
The absorbent article according to any one of claims 1 to 8 , wherein a front body, the crotch part, and a back body are provided in the longitudinal direction in this order. A front patch provided in the middle in the width direction of the front body;
Extending outward to each of both widthwise ends of the back body, as claimed in claim 9, characterized in that it comprises a and a fastening tape having the stop mounting portion to be stopped with the front patch Absorbent articles. It is a manufacturing method which manufactures an absorptive article given in any 1 paragraph of Claims 1-10 ,
A first step of processing the high-rigidity portion by press working on the absorber;
A second step of recessing the groove-like portion by pressing in the absorber;
And a third step of disposing the elastic part on the outside of the groove-like part. The method for producing an absorbent article according to claim 11 , wherein the second step is performed after the first step.

Images