JP2013123554A - Absorbent article - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an absorbent article which can increase air-permeability to improve a feel when it is being worn.SOLUTION: The absorbent article 1 includes an absorbent body 4 arranged between a surface sheet 2 and a back sheet 3, and a side gather 60. The side gather 60 is formed by gluing stretchable members among a plurality of laminated side sheets. The stretchable members which include first stretchable members 71 and second stretchable members 72, the length of the stretchable members is shorter than that of the side sheets. First non-glued areas 62A, in which the laminated side sheets are not glued with each other, are set outside a longitudinal direction of the first stretchable members and the second stretchable members. Second non-glued areas 62B, in which the laminated side sheets are not glued with each other, are set between the first stretchable members and the second stretchable members. The length of the first non-glued areas in the width direction is longer than that of the second non-glued areas.

Description

  The present invention relates to an absorbent article.

  In Patent Document 1, a liquid-permeable top sheet, a liquid-impermeable back sheet, an absorber disposed between the top sheet and the back sheet, and a three-dimensional guard elastic member on the left and right side portions in the longitudinal direction An absorbent article having a pair of three-dimensional guards provided is disclosed.

  The three-dimensional guard is configured by folding a sheet material at a free end and arranging a three-dimensional guard elastic member between the sheet materials. A plurality of three-dimensional guard elastic members are arranged at intervals in the width direction. The three-dimensional guard is configured so that the three-dimensional guard elastic member can rise and fall in the front-rear direction to rise from the absorber and prevent side leakage.

JP 2000-254171 A

However, the above-described absorbent article has the following problems.
In the three-dimensional gather of the absorbent article, a plurality of elastic members are arranged at a certain interval in the width direction, and the whole three-dimensional gather expands and contracts in the front-rear direction. When the entire three-dimensional gather expands and contracts in this way, the three-dimensional gather contracts and its volume decreases. Therefore, an absorber and a wearer may adhere in a crotch part.

  In general, the absorbent article is configured to be in close contact with the wearer's crotch, and is configured such that body fluid discharged from the wearer is quickly absorbed by the absorbent body. However, if the absorbent body and the wearer are in close contact with each other in the crotch region, the air permeability is deteriorated, the stuffiness is generated, and the wearing feeling may be deteriorated.

  Then, this invention is made | formed in view of the above-mentioned subject, and it aims at providing the absorptive article which can improve air permeability and can improve a feeling of mounting.

  The absorbent article according to the present disclosure is directed in the front-rear direction extending to the wearer's body front side and the body rear side, the width direction orthogonal to the front-rear direction, the inner direction toward the wearer, and the opposite side to the inner direction. An absorbent body having an outer direction, a liquid-permeable top sheet disposed inward of the absorbent body, a liquid-impermeable back sheet disposed outward of the absorbent body, and the absorbent body Side gathers disposed laterally in the width direction of the absorbent article, wherein the side gathers are laminated by laminating a plurality of side sheets with the side sheets folded from the folds along the front-rear direction. It is formed by adhering a stretchable member that stretches in the front-rear direction between the side sheets, and the stretchable member is disposed on the inner side in the width direction than the first stretchable member and the first stretchable member. Second expansion and contraction A length of the stretchable member in the front-rear direction is shorter than a length of the side seat in the front-rear direction, and the length of the front-rear direction is shorter than that of the first stretchable member and the second stretchable member. On the outer side in the direction, there is provided a first non-adhesion region where the laminated side sheets are not bonded to each other, and the laminated side sheets are disposed between the first elastic member and the second elastic member. A second non-bonded region that is not bonded is provided, and the length in the width direction of the first non-bonded region is longer than the length in the width direction of the second non-bonded region. .

  In the absorbent article according to the present invention, the first non-adhesive region and the second non-adhesive region where the side sheets are not bonded to each other are formed, and a space that allows ventilation is formed between the side sheets. Therefore, it is possible to improve the air permeability and suppress the deterioration of the wearing feeling due to stuffiness.

  Furthermore, the length in the width direction of the first non-adhesion region is longer than the length in the width direction of the second non-adhesion region, and air can be efficiently taken in from the end side of the absorber toward the inside. it can. Specifically, the air that enters between the side sheets enters the second non-adhesive region side that is the inner side, with the first non-adhesive region that is the end portion of the side sheet as an inlet. At this time, if the width of the first non-adhesion region constituting the inlet is short, it becomes difficult for air to be taken in and the air circulation property is deteriorated. However, since the width of the first non-adhesion region is long, air can easily flow in and air permeability can be improved.

It is a perspective view of the absorptive article concerning an embodiment. It is an expansion | deployment top view of the absorbent article shown in FIG. FIG. 3 is a cross-sectional view taken along line X1-X1 ′ shown in FIG. 2. It is an enlarged view of A part shown in FIG. FIG. 3 is a partially enlarged view of the X2-X2 ′ cross-sectional view shown in FIG. 2.

  With reference to FIGS. 1-5, the absorbent article 1 which concerns on embodiment is demonstrated. The absorbent article 1 according to the present embodiment is, for example, a pants-type diaper or an open-type diaper. The diaper may be an adult diaper or a child diaper.

  The absorbent article 1 according to the present embodiment is a pants-type diaper. The absorbent article 1 corresponds to the front waistline region S1 corresponding to the wearer's front waistline, the rear waistline region S2 corresponding to the wearer's back waistline, and the wearer's inseam, the front waistline region S1 and the back waistline region. Crotch region S3 located between S2.

  The absorbent article 1 includes an absorbent main body 1A and an exterior body 1B. The absorbent main body 1A includes a liquid-permeable top sheet 2, a liquid-impermeable back sheet 3, an absorber 4 disposed between the top sheet 2 and the back sheet 3, and the width direction of the top sheet 2. And a side sheet 6 covering the outer end portion. The absorbent body 4 includes a front-rear direction L extending to the wearer's front side and the rear side of the wearer, a width direction orthogonal to the front-rear direction, an inner direction T1 toward the wearer, and a side opposite to the inner direction (away from the wearer). And an outward direction T2 toward the side). The exterior body 1 </ b> B is disposed outward from the absorbent main body 1 </ b> A and includes an exterior top sheet 11 and an exterior back sheet 12.

  The topsheet 2 is positioned inward (wearer side) from the absorber 4. As the top sheet 2, a liquid-permeable sheet such as a nonwoven fabric or an apertured plastic film is used.

  The back sheet 3 is disposed outward from the absorber 4 and inward from the exterior body 1B. A liquid-impermeable sheet or the like is used for the back sheet 3.

  The absorber 4 is provided between the top sheet 2 and the back sheet 3 and absorbs excrement from the wearer. For the absorber 4, a mixture of pulverized pulp and superabsorbent polymer particles is used.

  The side sheets 6 are arranged so as to cover both outer ends in the width direction of the top sheet 2 in the inner direction than the top sheet 2. A liquid-impermeable sheet or the like is used for the side sheet 6. The side sheet is bonded to the skin contact surface side of the top sheet 2 via an adhesive.

  The side gathers 60 are composed of one side sheet 6 and an elastic member. In the side gathers 60, the side sheets 6 are folded back with the fold line extending in the front-rear direction as a base point, and two sheets are stacked. The fold along the front-rear direction becomes the free end 63 of the side gather 60.

  The stretchable member is bonded between the two side sheets in a state of extending in the longitudinal direction. The side sheet 6 is provided with an adhesion region 61 in which two stacked sheets are adhered to each other and a non-adhesion region in which the sheets are not adhered to each other. In the adhesion region 61, the side sheets may be adhered to each other by an adhesive, or may be welded by embossing or the like. In addition, two or more side sheets 6 may be stacked to form a side gather.

  The stretchable member is an elastic material made of synthetic rubber and is provided in the adhesive region 61 of the side sheet. The stretchable member includes two first stretchable members 71 and two second stretchable members adjacent to the free end 63. As shown in FIGS. 2 and 3, the first stretchable member 71 is disposed on the outer side in the width direction than the second stretchable member 72 in a state where the side sheet is folded back. In addition, the 1st elastic member 71 and the 2nd elastic member 72 should just be provided in the adhesion | attachment area | region 61 in the state extended | stretched to the longitudinal direction, and non-adhesion, such as a 1st non-adhesion area | region, is a non-elongation state. It may be provided in the area.

  When the first elastic member 71 and the second elastic member 72 expand and contract in the front-rear direction, the side seat 6 expands and contracts in the front-rear direction, and the side gathers 60 stand up on the wearer side. Since the side sheet 6 is configured to have water repellency, it is possible to prevent side leakage of body fluid or the like discharged from the wearer by the side gathers formed on the lateral side of the absorbent body 4.

  The length in the longitudinal direction of the first stretchable member 71 and the second stretchable member 72 is shorter than the length in the longitudinal direction of the side seat 6. The first elastic member 71 and the second elastic member 72 are provided in the crotch region S3, a part of the front waistline region S1, and a part of the rear waistline region.

  On the outer side in the front-rear direction than the first elastic member 71 and the second elastic member 72, a first non-adhesive region 62A in which the stacked side sheets 6 are not bonded to each other is provided. Between the 2nd elastic member 72, the 2nd non adhesion field 62B where the laminated side sheets 6 are not pasted up is provided. In FIG. 2, the first non-adhesive region 62A and the second non-adhesive region 62B are indicated by hatching.

  By providing the first non-adhesive region 62A and the second non-adhesive region 62B, the first elastic member 71 and the second elastic member 72 disposed in the second non-adhesive region 62B expand and contract. Further, the side sheets of the second non-adhesive region 62B are separated from each other, and a space that allows ventilation between the side sheets can be formed. Therefore, air can be allowed to pass through, the air permeability in the vicinity of the absorber can be improved, and deterioration of wearing feeling due to stuffiness can be suppressed.

  Moreover, by forming the space by a non-adhesion area | region in the side of the absorber 4, it can suppress that an absorber and a wearer contact | adhere, and can improve air permeability further. Therefore, the air permeability inside the absorbent article can be improved, and the feeling of wearing can be improved by suppressing the stuffiness.

  Further, the first non-adhesive region 62A and the second non-adhesive region 62B are continuous. That the 1st non-adhesion field and the 2nd non-adhesion field continue is that the adhesion field where side sheets adhered is not formed between the 1st non-adhesion field and the 2nd non-adhesion field. By forming an air passage that extends in the front-rear direction between the side sheets laminated in this manner, air can be passed in the front-rear direction.

  Furthermore, the length Wa in the width direction of the first non-bonded region 62A is configured to be longer than the length Wb in the width direction of the second non-bonded region 62B (see FIGS. 4 and 5). Therefore, air can be taken in efficiently from the end side of the absorber toward the inside. Specifically, the air that enters between the side sheets enters the second non-adhesive region 62B side, which is the inner side, with the first non-adhesive region 62A located at the end of the side sheet as an inlet. At this time, if the width of the first non-adhesion region 62A constituting the inlet is short, it is difficult for air to be taken in, and air circulation is deteriorated. However, since the width of the first non-adhesion region 62A is long, air can easily flow in and air permeability can be improved.

  Moreover, the absorber is comprised so that it may be arrange | positioned between a wearer's both legs. Moreover, the excretion opening | mouth contact | abutting area | region where the bodily fluid from which a bodily fluid etc. are discharged | emitted from a wearer contacts is located in the crotch area | region used as the center part in the width direction o and the front-back direction of an absorber. The region on the outer side in the width direction from the excretory opening contact region of the absorber is configured such that the bodily fluid absorbed in the excretion port contact region is diffused and does not directly absorb bodily fluid from the wearer.

  Therefore, it is desirable to arrange the side sheet so as to cover the width direction outer side than the excretion opening contact region. By arrange | positioning in this way, side leakage can be prevented by a side gather, ensuring the absorption of the bodily fluid from the wearer in the excretion opening | mouth contact | abutting area | region.

  The absorbent body 4 has a wide portion 41 positioned at both outer ends in the front-rear direction L, and a narrow portion 42 that is positioned on the inner side in the front-rear direction L than the wide portion 41 and shorter in the width direction than the wide portion 41. And are formed. The first elastic member 71 and the second elastic member 72 are arranged so as to overlap the narrow portion.

  Since the crotch region is disposed between the wearer's legs, the narrow portion 42 having a relatively narrow width is disposed in the crotch region. By arranging the stretchable member in the narrow part of the absorbent body, a side gather can be formed in the crotch region, and an air passage can be formed in the crotch region as the stretchable member expands and contracts. The air permeability in the vicinity of the excretory opening contact area that is relatively easy to be stuffed can be improved, and the wearing feeling can be improved.

  Moreover, in the state before the 1st elastic member and the 2nd elastic member expand / contract, it is comprised so that the elongation stress of a 1st elastic member and the elongation stress of a 2nd elastic member may differ. In other words, the state before the first elastic member and the second elastic member expand and contract is a state in which the absorbent article shown in FIG. Since the extension stress of the first elastic member and the extension stress of the second elastic member are different, the widthwise outer side (first elastic member 71 side) of the side sheet and the widthwise inner side (second elastic member 72). Side) and the shrinkage dimensions of the side sheets are different. Therefore, the sheets are easily separated from each other in the second non-adhesive region 62B between the first elastic member and the second elastic member, and a space is easily formed.

  It should be noted that the relationship between the elongation stress of the first elastic member 71 and the elongation stress of the second elastic member 72 may be higher, but more preferably, the elongation stress of the second elastic member 72 is the first. It is better that it is higher than the elongation stress of one elastic member. Since the extensional stress of the second elastic member 72 is higher than the extensional stress of the first elastic member, the inner side in the width direction of the side seat rises and enhances the effect of adhering to the wearer's skin as a three-dimensional gather. be able to.

In addition, the elongation stress of a stretchable member can be measured as follows, for example.
(1) Cut out the material with the elastic member in between. Specifically, in the absorbent article according to the present embodiment, the side sheet on which the first stretchable member and the second stretchable member are arranged is cut out in a stretched state so as not to sag. In the same extended state, marking is made 10 mm inside from both ends in the length direction. A tensile tester (for example, model: 5564) manufactured by Inslon Japan Company Limited or an autograph (for example, model: AGS-1kNG) manufactured by Shimadzu Corporation was used for the measurement of the elongation stress.

  (2) The sample of (1) is sandwiched by the upper chuck so that the marking portion is the inner end of the chuck, and is sandwiched by the lower chuck so that the other marking portion is the inner end of the chuck. The length of the sample between the chucks is 80 mm. If the length of the elastic material gathered is shorter than 100 mm, the length of the sample between the chucks is set to a length 20 mm shorter than the shortest length of the elastic member working as a gather. . The initial distance between chucks is set to be shorter than the length (natural length) when the sample is contracted so that the sample is not initially tensioned. The sample is pulled up and down under the condition of 100 mm / min so that the chucks are separated from each other, thereby extending the sample.

  (3) The length of the sample between the chucks when the material sandwiching the elastic member is stretched smoothly is 100%, and the sample is extended until the length between the chucks of the sample reaches 90%. The stress at the time of elongation of the sample at that time is measured, and is defined as the elongation stress of the elastic material. That is, in the present embodiment, the elongation stress is measured when the sample is extended to 72 mm, which is 90% with respect to the 100% length dimension of 80 mm.

  Although the present invention has been described in detail using the above-described embodiments, it is obvious to those skilled in the art that the present invention is not limited to the embodiments described in this specification. The present invention can be implemented as modified and changed modes without departing from the spirit and scope of the present invention defined by the description of the scope of claims. Therefore, the description of the present specification is for illustrative purposes and does not have any limiting meaning to the present invention.

DESCRIPTION OF SYMBOLS 1 ... Absorbent article 1A ... Absorbent main body 1B ... Exterior body 2 ... Top sheet 3 ... Back sheet 4 ... Absorber 6 ... Side sheet 11 ... Exterior top sheet 12 ... Exterior back sheet 60 ... Side gather 61 ... Adhesion area 62A ... First non-adhesive region 62B ... Second non-adhesive region 63 ... Free end 71 ... First stretchable member 72 ... Second stretchable member S1 ... Front waistline region S2 ... Rear waistline region S3 ... Inseam region

Claims (5)

An absorbent body having a front-rear direction extending to the wearer's body front side and a body rear side, a width direction orthogonal to the front-rear direction, an inner direction toward the wearer, and an outer direction toward the opposite side of the inner direction; A liquid-permeable top sheet disposed inward of the absorber, a liquid-impermeable back sheet disposed outward of the absorber, and a side in the width direction of the absorber. An absorbent article comprising:
The side gathers are formed by folding a plurality of side sheets with a fold along the front-rear direction as a base point, and a stretchable member that expands and contracts in the front-rear direction is bonded between the stacked side sheets. ,
The stretchable member includes a first stretchable member and a second stretchable member disposed on the inner side in the width direction than the first stretchable member,
The length in the front-rear direction of the stretchable member is shorter than the length in the front-rear direction of the side seat,
On the outer side in the front-rear direction than the first elastic member and the second elastic member, a first non-adhesive region where the stacked side sheets are not bonded to each other is provided, and the first elastic member and the first elastic member Between the second elastic members, a second non-adhesive region where the laminated side sheets are not bonded is provided,
The length of the width direction of the 1st non-adhesion field is longer than the length of the width direction of the 2nd non-adhesion field, Absorbent article characterized by things.   The absorbent article according to claim 1, wherein the first non-adhesive region and the second non-adhesive region are continuous.   The absorbent article according to claim 1 or 2, wherein the non-adhesive region is provided with a ventilation path by separating the laminated side sheets from each other. The absorbent body is formed with a wide portion located at both outer ends in the front-rear direction, and a narrow portion located on the inner side in the front-rear direction than the wide portion and shorter in the width direction than the wide portion. And
The absorbent article according to any one of claims 1 to 3, wherein the first stretchable member and the second stretchable member are disposed so as to overlap the narrow portion.   In a state before the first elastic member and the second elastic member expand and contract, the extension stress of the first elastic member and the extension stress of the second elastic member are different from each other. The absorbent article in any one of Claims 1-4.

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