JP6567640B2 - Absorbent articles - Google Patents

Description

  The present invention relates to an absorbent article such as a disposable diaper.

  The absorptive article indicated in patent documents 1 has an absorptive main part and an exterior body arranged at the non-skin opposing surface side of an absorptive main part. An absorptive main body has an absorption core and the front-end part extended on the outer side of the front-back direction rather than an absorption core. A plurality of sheet materials are provided at the front end.

JP, 2006-34341, A

  The absorbent article thus configured generally has the highest rigidity in the region where the absorbent core is disposed. The rigidity of the front end portion of the absorbent main body is higher than the rigidity of the region where the absorbent core is disposed, and the rigidity of the region where only the outer package is disposed is lower than the rigidity of the front end portion of the absorbent main body. When the wearer moves his / her legs back and forth, a force that moves in the front / rear direction is applied to the absorbent core, a force that moves to the front end of the absorbent main body through the absorbent core is applied, and a relatively low-strength exterior body is formed. Easy to deform. At this time, since the exterior body receives a force from the absorbent main body located on the skin facing surface side, the exterior body is easily lifted away from the wearer. By floating away from the wearer, the position of the exterior body may be shifted in the front waistline region.

  Then, the absorbent article which can suppress the position shift of the exterior body in a front waist area by movement of a wearer's leg is desired.

  An absorbent article according to one aspect is a crotch disposed between a front-rear direction, a width direction orthogonal to the front-rear direction, a front waistline region, a rear waistline region, and the front waistline region and the rear waistline region. An absorbent main body disposed across the region, the crotch region, the front waistline region and the rear waistline region, and the non-skin facing surface side of the absorbent main body, the front side disposed in the front waistline region An absorbent article, wherein the absorbent main body has an absorbent core and a front end extending to the front side of the absorbent core, and the front end of the absorbent main body includes: A sheet where a first sheet material and a second sheet material overlap each other in the thickness direction is provided, and the first sheet material is not joined to the second sheet material at a front end edge of the overlapping area. A non-joining region is provided.

It is a front view of the absorptive article concerning an embodiment. It is a top view of an absorptive article concerning an embodiment. It is sectional drawing along the AA cross section of the absorbent article shown in FIG. It is sectional drawing along the BB cross section of the absorbent article shown in FIG. It is the figure which showed typically the cross section of the mounting state of the absorbent article which concerns on embodiment. It is the figure which showed typically the cross section of the mounting state of the absorbent article which concerns on a comparative example.

(1) Outline of Embodiments At least the following matters will become apparent from the description of the present specification and the accompanying drawings.
An absorbent article according to one aspect is a crotch disposed between a front-rear direction, a width direction orthogonal to the front-rear direction, a front waistline region, a rear waistline region, and the front waistline region and the rear waistline region. An absorbent main body disposed across the region, the crotch region, the front waistline region and the rear waistline region, and the non-skin facing surface side of the absorbent main body, the front side disposed in the front waistline region An absorbent article, wherein the absorbent main body has an absorbent core and a front end extending to the front side of the absorbent core, and the front end of the absorbent main body includes: A sheet where a first sheet material and a second sheet material overlap each other in the thickness direction is provided, and the first sheet material is not joined to the second sheet material at a front end edge of the overlapping area. A non-joining region is provided.

  A sheet non-joining region is provided at the front end edge of the overlapping region provided at the front end of the absorbent main body. Compared with the configuration in which the first sheet material is joined to the second sheet material, the rigidity of the front end portion of the absorbent main body is lowered. When a force that moves in the front-rear direction is applied to the absorbent core, the front end of the absorbent main body is deformed to absorb the force, making it difficult for the force going from the absorbent main body to the front side to be transmitted to the exterior body. The main body makes it difficult to push up the exterior body. Therefore, the deformation | transformation which an exterior body raises can be suppressed and the position shift of a front side exterior body can be suppressed.

  According to a preferred aspect, the sheet non-bonding region is disposed so as to overlap the absorbent core in the front-rear direction.

  A region that overlaps with the absorbent core in the front-rear direction is likely to receive a force from the absorbent core toward the front side. By providing the sheet non-bonding region in at least a part of the region, it is possible to make it difficult to transmit the force from the absorbent main body toward the front side with respect to the exterior body, and it is possible to suppress the displacement of the front side exterior body.

  According to a preferred aspect, the absorbent main body has a central region that is a region obtained by dividing the full length of the absorbent core in the width direction into three equal parts and is located in the center of the absorbent core in the width direction, and the sheet. The non-joining region is arranged so as to overlap the central region in the front-rear direction.

  When the wearer moves the leg in the front-rear direction with the absorbent core sandwiched between the wearer's legs, the force tends to concentrate at the center in the width direction of the absorbent core, and the shape of the front edge of the absorbent core is The center tends to protrude forward from the side in the width direction. Therefore, a force from the absorbent core toward the front side is more likely to be applied to the region that overlaps with the central region in the front-rear direction. By providing the sheet non-bonding region in the region, it is possible to make it difficult to transmit the force from the absorbent main body toward the front side by the front side exterior body, and it is possible to suppress the displacement of the front side exterior body.

  According to a preferred aspect, the sheet non-joining region is disposed so as to overlap the entire width direction of the absorbent core in the front-rear direction.

  By providing a sheet non-bonding area in the area that overlaps the entire width direction of the absorbent core and the front-rear direction, it is difficult to transmit the force from the absorbent main body to the front side by the front outer body, and the position of the front outer body is shifted. Can be suppressed.

  According to a preferred aspect, at least the first sheet material of the first sheet material and the second sheet material is a liquid-impermeable sheet.

  The liquid impervious sheet is composed of a film or the like, and many of the liquid impervious sheets have higher rigidity than a sheet material that is a liquid permeable sheet. Since the 1st sheet material which is a liquid impervious sheet is not joined to the 2nd sheet material, the rigidity of the front end part of an absorptive main part tends to become low, and can make it difficult to transmit force from an absorptive main part to a front side exterior body.

  According to a preferred aspect, the second sheet material is disposed on the skin facing surface side of the first sheet material, and the first sheet material and the second sheet material absorb the absorption in the thickness direction. It arrange | positions ranging over the area | region which overlaps with a core, and the said front-end part, and is arrange | positioned on both sides of the said absorption core in the said thickness direction.

  The sheet material arranged with the absorbent core sandwiched in the thickness direction is more susceptible to the force from the absorbent core. Since the sheet non-joining region is provided between the sheet materials arranged with the absorbent core interposed therebetween, it is difficult to transmit the force from the absorbent main body toward the front side by the front side exterior body, and the positional deviation of the front side exterior body can be suppressed.

  According to a preferred aspect, the second sheet material is disposed on the skin facing surface side of the first sheet material, and the front end portion of the absorbent main body has a non-skin facing surface of the first sheet material. A third sheet material located on the side is arranged, and in the sheet non-joining region, the first sheet material is not joined to the second sheet material and is not joined to the third sheet material. .

  In the sheet non-bonding region, the three layers of the first sheet material, the second sheet material, and the third sheet material are not bonded to each other. Therefore, the rigidity of the front end portion of the absorbent main body is likely to be low, and the force can be more difficult to be transmitted from the absorbent main body to the front exterior body.

  According to a preferred aspect, the first sheet material and the second sheet material are arranged with the absorbent core sandwiched in the thickness direction, and the first sheet material is not joined to the second sheet material. The length in the front-rear direction of the region is longer than the length in the front-rear direction of the region where the first sheet material is not joined to the third sheet material.

  The first sheet material and the second sheet material arranged with the absorbent core sandwiched in the thickness direction are more likely to receive a force from the absorbent core. Since the length in the front-rear direction of the region where the first sheet material is not joined to the second sheet material is relatively long, it is difficult to transmit the force from the absorbent main body to the front side by the front side exterior body, and the position shift of the front side exterior body Can be suppressed.

  According to one preferable aspect, the cover sheet is disposed on the skin-facing surface side of the absorbent main body and covers a front end edge of the absorbent main body, and the cover sheet is provided on at least a part of the sheet non-joining region. It is arranged overlapping in the thickness direction.

  The front end portion of the absorbent main body is provided with a sheet non-joining region where the sheet materials are not joined to each other, and the front edge of the sheet material may hit the skin. By covering the sheet non-bonding region with the cover sheet, the front edge of the sheet material is difficult to hit the skin, and irritation to the skin can be suppressed.

  According to a preferred aspect, the cover sheet is disposed so as to overlap the entire area of the sheet non-joining region.

  The entire area of the sheet non-bonding region can be covered with the cover sheet, and not only the front edge of the sheet material but also the entire region where the sheet material is likely to float in the thickness direction can be covered. Therefore, the irritation | stimulation to skin can be suppressed more.

  According to a preferred aspect, the cover joining region where the cover sheet is joined to the absorbent main body is disposed so as to overlap a part of the sheet non-joining region in the thickness direction.

  The area where the sheet non-bonding area and the cover bonding area overlap is different from the area where the sheet non-bonding area and the cover bonding area do not overlap. When the force is received from the absorbent core by the two regions, it is deformed stepwise and the force received from the absorbent core is more easily absorbed. Therefore, it is difficult to transmit the force from the absorbent main body toward the front side by the front side exterior body, and the positional deviation of the front side exterior body can be suppressed.

  According to a preferred aspect, a sheet joining region in which the first sheet material is joined to the second sheet material is provided on the crotch region side with respect to the sheet non-joining region, and the cover sheet and the absorbing member are provided. The cover bonding region to which the adhesive main body is bonded is disposed so as to overlap the sheet bonding region in the thickness direction.

  The region where the cover bonding region and the sheet bonding region overlap has higher rigidity than the region where the cover bonding region and the sheet non-bonding region overlap or the region where the cover non-bonding region and the sheet non-bonding region overlap. Since the region with high rigidity is provided on the crotch region side with respect to the sheet non-bonding region, the force from the absorbent core toward the outside in the front-rear direction can be distributed to the sheet material and the cover sheet through the region with high rigidity. It is easier to absorb the force received from the absorbent core in both the sheet material and the cover sheet. Therefore, it is difficult to transmit the force from the absorbent main body toward the front side by the front side exterior body, and the positional deviation of the front side exterior body can be suppressed.

  According to a preferred aspect, the front end edge of the overlapping region is provided with a main body non-joining region in which the absorbent main body and the front exterior body are not joined.

  Since the main body non-joining region is provided at the front end portion of the absorbent main body, the rigidity of the front end portion of the absorbent main body is lower than that of the configuration in which the absorbent main body and the exterior body are joined. When a force that moves to the front side is applied to the absorbent core, the front end portion of the absorbent main body is deformed to easily absorb the force. The force toward the front side from the absorbent main body becomes difficult to be transmitted to the exterior body, and it is difficult to push up the exterior body by the absorbent main body. Therefore, the deformation | transformation which an exterior body raises can be suppressed and the position shift of a front side exterior body can be suppressed.

  According to a preferred aspect, the sheet non-bonding region extends outward in the width direction from the main body non-bonding region.

  Since the sheet non-bonding region extends outward in the width direction from the main body non-bonding region, the rigidity can be lowered over the entire width direction of the main body non-bonding region. Due to the deformation of the front end portion of the absorbent main body, it is easier to suppress the deformation that causes the exterior body to float.

(2) Overall Schematic Configuration of Absorbent Article Hereinafter, the absorbent article according to the 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, it should be noted that the drawings are schematic and ratios of dimensions and the like are different from actual ones. Therefore, specific dimensions and the like should be determined in consideration of the following description. Moreover, the part from which the relationship and ratio of a mutual dimension differ also in between drawings may be contained.

  The absorbent article may be a tape type or a pants type. The absorbent article may be a disposable diaper or a shorts-type sanitary napkin. The absorbent article of the first embodiment is a pants-type disposable diaper. FIG. 1 is a schematic front view of an absorbent article 10 according to the present embodiment. FIG. 2 is a schematic plan view of the absorbent article 10 according to the present embodiment. The schematic plan view shown in FIG. 2 shows a stretched state in which the absorbent article 10 is stretched to a state where no wrinkles are formed in a state where a side joint 60 described later is expanded. 3 is a cross-sectional view taken along line AA shown in FIG. 2, and FIG. 4 is a cross-sectional view taken along line BB shown in FIG.

  The absorbent article 10 has a front-rear direction L and a width direction W that are orthogonal to each other. The front-rear direction L is defined by the direction extending to the front side of the body and the rear side of the body. In other words, the front-rear direction L is a direction extending in the front-rear direction in the developed absorbent article 10. In addition, the absorbent article 10 has a thickness direction T that is perpendicular to both the front-rear direction L and the width direction W.

  The absorbent article 10 has a front waistline region S1, a back waistline region S2, and a crotch region S3. The front waistline region S1 is a region facing the wearer's front waistline (abdomen). The back waistline region S2 is a region facing the back waistline (back portion) of the wearer. The crotch region S3 is a region located between the front waistline region S1 and the back waistline region S2 that is located in the crotch of the wearer.

  In the present embodiment, the absorbent article 10 may include an exterior body 15 and an absorbent main body 40. The exterior body 15 overlaps the absorbent main body 40 in the thickness direction, and is disposed at least in the front waistline region S1. The exterior body 15 may include a front exterior body 20 and a rear exterior body 30. The front exterior body 20 is an exterior body that is disposed on the non-skin facing surface side T2 of the absorbent main body 40 in the front waistline region S1. The rear exterior body 30 is an exterior body that is separated from the front exterior body 20 in the front-rear direction L and is disposed on the non-skin facing surface side T2 of the absorbent main body 40 in the rear waistline region S2.

  The exterior body 15 may include a cover sheet 27 disposed on the skin facing surface side T1 of the absorbent main body 40. The cover sheet 27 may be provided on the skin facing surface side T1 of the absorbent main body 40 in the front waistline region.

  The crotch region S3 is a region where a leg opening 72 (see FIG. 1) described later is formed. The boundary on the crotch region side of the front waistline region S1 is the front end edge of the leg periphery opening 72, and the boundary on the crotch region side of the rear waistline region S2 is the rear end edge of the leg periphery opening 72. In other embodiments, the exterior body 15 may be provided from the front waistline region S1 to the rear waistline region S2 in which the front exterior body 20 and the rear exterior body 30 are integrated.

  The front side exterior body 20 and the back side exterior body 30 may be comprised, for example from the sheet | seat like a nonwoven fabric. The front exterior body 20 may include a plurality of exterior sheets. The exterior sheet may include a first exterior sheet 25 and a second exterior sheet 26 located on the non-skin facing surface side T2 of the first exterior sheet 25. The cover sheet 27 may be composed of a sheet such as a nonwoven fabric, for example. The cover sheet 27 may be configured by a portion in which at least one of the first exterior sheet 25 and the second exterior sheet 26 constituting the front exterior body 20 is folded back to the skin facing surface side T1, or the first exterior sheet 25. The second exterior sheet 26 may be a separate sheet.

  As shown in FIG. 1, a side joint portion 60 may be provided in which the outer portion of the front waistline region S1 in the width direction W and the outer portion of the rear waistline region S2 in the width direction W are joined. FIG. 2 shows a state where the bonding at the side bonding portion 60 is released and the absorbent article 10 is developed. The side joint portion 60 may extend along the front-rear direction L in each of the front exterior body 20 and the rear exterior body 30.

  In addition, the outer side part in this invention is a part which occupies a fixed range in the width direction W including the outer edge in the width direction W, and an outer side edge is an outer edge in the width direction W. The inner portion in the present invention is a portion that occupies a certain range in the width direction W including the inner edge in the width direction W, and the inner edge is an inner edge in the width direction W. Further, the front end portion and the rear end portion in the present invention occupy a certain range in the front-rear direction L including the edge 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 portion includes a front end portion and a rear end portion, and the outer end edge includes a front end edge and a rear end edge.

  As shown in FIG. 1, in a state where the side joint portion 60 is formed, the absorbent article 10 has a pair of waistline openings 71 through which the wearer's torso is inserted and a pair of legs into which the wearer's legs are inserted. Leg opening 72 is formed. The waistline opening 71 is defined by the front edge 20F of the front exterior body that is the front end edge S1F of the front waistline area S1 and the rear end edge 30R of the rear exterior body 30 that is the rear end edge S2R of the rear waistline area S2. It may be. Further, the leg opening 72 extends to the rear end edge 20R of the front exterior body 20 that extends outward in the width direction W from the absorbent main body 40 and to the outer side in the width direction W from the absorbent main body 40. The front edge 30F of the rear exterior body 30 and the outer edge 40E of the absorbent main body 40 in the crotch region S3 may be defined.

  The absorbent main body 40 is disposed across the front exterior body 20 and the rear exterior body 30. That is, the absorbent main body 40 extends over the front waistline region S1, the back waistline region S2, and the crotch region S3. The absorptive main body 40 may be configured as a separate body from the front exterior body 20 and the rear exterior body 30. The absorbent main body 40 includes a region where the front exterior body 20 or the rear exterior body 30 is disposed on the non-skin facing surface side T2, a region not overlapping the exterior body 15 in the thickness direction T, and the front exterior body 20 and the cover. You may have the area | region pinched | interposed into the thickness direction by the sheet | seat.

  The absorbent main body 40 includes at least an absorbent core 50. The absorbent core 50 may comprise, for example, ground pulp or superabsorbent polymer (SAP), or a mixture thereof. The absorbent core 50 is disposed at least in the crotch region S3. Preferably, the absorbent core 50 may extend in the front-rear direction L from the front waistline region S1 to the rear waistline region S2. The absorbent core 50 may be covered with a core wrap.

  As shown in FIG. 2, the absorbent main body 40 may have a front end portion 45 that extends to the front side of the absorbent core 50. The front end portion 45 is a region between the front end edge 50F of the absorbent core 50 and the front end edge 40F of the absorbent main body 40 in the front-rear direction L, and extends from one outer edge 40E of the absorbent main body 40 to the other outer side in the width direction W. This is the region up to the edge 40E. 3 and 4, the front-rear direction range and the width direction range of the front end portion 45 are shown. Moreover, the absorptive main body 40 may have the center area | region CR located in the center of the width direction W of the absorption core 50. FIG. The central region CR is a region located at the center in the width direction W among regions obtained by dividing the entire length of the absorbent core 50 in the width direction W into three equal parts.

  As shown in FIGS. 3 and 4, the absorbent main body 40 may include at least a liquid impermeable sheet 41 and a main body sheet 42 that overlaps the liquid impermeable sheet 41 in the thickness direction T. The liquid impervious sheet 41 and the main body sheet 42 may be disposed at least at the front end portion 45. The liquid impervious sheet 41 and the main body sheet 42 may be disposed across the region overlapping the absorbent core 50 and the front end portion 45. The liquid-impermeable sheet 41 may be disposed on the non-skin facing surface side T2 with respect to the absorbent core 50. The main body sheet 42 has a first main body sheet 42 </ b> A disposed on the skin-opposing surface side T <b> 1 from the liquid-impermeable sheet 41 and on the skin-opposing surface side T <b> 1 from the absorbent core 50, And a second main body sheet 42B disposed on the surface side T2.

  The liquid impervious sheet 41, the first main body sheet 42A, and the second main body sheet 42B constitute the first sheet material and the second sheet material of the present invention. Specifically, the liquid-impermeable sheet 41 may constitute the first sheet material, the first main body sheet 42A or the second main body sheet 42B may constitute the second sheet material, or the first main body sheet 42A may be the first main sheet 42A. One sheet material may be configured, and the liquid impervious sheet 41 or the second main body sheet 42B may constitute the second sheet material, or the second main body sheet 42B may constitute the first sheet material, and the liquid impermeable sheet 41 Alternatively, the first main body sheet 42A may constitute the second sheet material.

  The front end portion 45 of the absorbent main body 40 may be provided with an overlapping region OR in which the first sheet material and the second sheet material overlap in the thickness direction. The overlapping region OR may be a region where at least two sheet materials of the liquid impermeable sheet 41, the first main body sheet 42A, and the second main body sheet 42B overlap in the thickness direction. The overlapping region OR may be a region where the liquid impervious sheet 41, the first main body sheet 42A, and the second main body sheet 42B overlap in the thickness direction. At least a part of the overlapping region OR may be provided in the front end portion 45. The overlapping region OR may be provided over the entire front end 45 or may be provided in a part of the front end 45.

  In the front end portion 45 of the absorbent main body 40 of the present embodiment, the first main body sheet 42A, the liquid impermeable sheet 41, and the second main body sheet 42B are arranged in this order from the skin facing surface side T1 toward the non-skin facing surface side T2. Is arranged in. In the region overlapping with the absorbent core 50 of the present embodiment, the first main body sheet 42A, the absorbent core 50, the liquid impervious sheet 41, the second main body sheet from the skin facing surface side T1 toward the non-skin facing surface side T2. They are arranged in the order of 42B. The first main body sheet 42 </ b> A and the liquid impervious sheet 41 may be disposed in the thickness direction T with the absorbent core 50 interposed therebetween.

  The liquid impervious sheet 41 only needs to be liquid impervious, and may be constituted by a film, for example. The liquid impervious sheet 41 may be composed of a single sheet. Instead of this, the liquid-impermeable sheet 41 may be composed of a laminated sheet in which a plurality of sheets are laminated with each other. In this case, at least one of the plurality of sheets may have liquid permeability.

  The main body sheet 42 only needs to be liquid-permeable, and may be formed of, for example, a nonwoven fabric. The main body sheet 42 may be composed of a single sheet. Instead, the main body sheet 42 may be composed of a laminated sheet in which a plurality of sheets are laminated with each other.

    The absorbent article comprised in this way has a joining area | region and a non-joining area | region. The bonding region is a region where the outer package 15 and the absorbent main body 40 are bonded, a region where the liquid-impermeable sheet 41 and the main body sheet 42 of the absorbent main body 40 are bonded, a region where the outer sheets of the outer package are bonded, And an area where the exterior sheet and the cover sheet are joined. The non-bonded region is a region where the outer package 15 and the absorbent main body 40 are not bonded, a region where the liquid-impermeable sheet 41 and the main body sheet 42 of the absorbent main body 40 are not bonded, and an outer package of the outer package is bonded. And a region where the exterior sheet and the cover sheet are not joined. Next, the bonded area and non-bonded area of the absorbent article 10 will be described. In addition, the non-joining area | region in this invention includes not only the area | region where the adhesive agent is not apply | coated, but the area | region where the members are not adhere | attached through the said adhesive agent, although the adhesive agent is apply | coated slightly. .

  The absorbent article 10 may have a sheet non-joining region NS where the first sheet material is not joined to the second sheet material. The sheet non-joining area NS may be provided at the front edge of the overlapping area OR. It suffices that at least a part of the sheet non-bonding region NS is provided in the overlapping region OR. The sheet non-bonding area NS may be provided in a part of the overlapping area OR, may be provided in the entire area of the overlapping area OR, or may be provided in the entire area of the front end portion 45.

  According to the absorbent article 10 configured as described above, it is possible to suppress the displacement of the exterior body 15 in the front waistline region S1 by moving the wearer's leg. FIG.5 and FIG.6 is the figure which showed typically the cross section of the mounting state of an absorbent article, and has shown the wearer's abdomen and the front waist area of an absorbent article typically. The dashed-dotted line shown in FIG.5 and FIG.6 has shown the wearer's body line. FIG. 5 shows a mounted state of the absorbent article according to the embodiment, and FIG. 6 shows a mounted state of the absorbent article according to the comparative example. 5 (A) and 6 (A) show a state before deformation, and FIGS. 5 (B) and 6 (B) show a deformed state in which the legs are moved back and forth.

  As shown in FIG. 6, the overlapping region OR is provided at the front end portion 145 of the absorbent article 100 according to the comparative example, and the sheet non-joining region NS is provided at the front end edge of the overlapping region OR. Not. The absorbent article 100 according to the comparative example is provided with a joining region R101 in which the liquid-impermeable sheet 41 and the main body sheet 42 are joined at the front edge of the overlapping region OR. In the absorbent article 100 configured in this manner, the liquid impervious sheet 41 and the main body sheet 42 are joined at the front end edge of the overlapping region OR, and thus the rigidity of the front end portion 145 is likely to increase. When the wearer moves the leg back and forth, a force that moves in the front-rear direction L is applied to the absorbent core 50, and the front end portion of the absorbent main body 40 moves forward through the absorbent core 50. At this time, as shown in FIG. 6, force is applied from the absorbent main body 40 located on the skin facing surface side T1 toward the front exterior body 20 located on the non-skin facing surface side T2, so the front exterior body 20 is It floats away from the wearer, and a space S is easily formed between the front end 145 and the wearer. By floating away from the wearer, the front edge S1F of the front waistline region S1 may shift to the crotch region S3, and the position of the front exterior body 20 may shift.

  As shown in FIG. 5, the front end portion 45 of the absorbent article 10 according to the embodiment is provided with an overlapping region OR, and a sheet non-joining region NS is provided at the front end edge of the overlapping region OR. . In the absorbent article 10 according to the embodiment, the first sheet and the second sheet constituting the absorbent main body 40 are not joined at the front end edge of the overlapping region OR. The rigidity of the front end portion 45 of the absorbent main body is reduced as compared with the configuration in which the first sheet material is bonded to the second sheet material. When a force that moves from the absorbent core 50 to the front side is applied, the overlapping region OR is more easily deformed. When the overlapping region OR of the absorbent main body 40 is deformed, it becomes difficult to push up the front exterior body 20 by the absorbent main body 40. The deformation | transformation which the front side exterior body 20 floats from a body can be suppressed, the position shift of the front side exterior body 20 can be suppressed, and a wearer's abdomen can be covered continuously.

  The sheet non-bonding region NS may be provided in the entire front end portion 45 or may be provided in a part of the front end portion 45. The front end edge of the sheet non-bonding region NS may coincide with the front end edge 40F of the absorbent main body 40. Preferably, at least a part of the sheet non-bonding region NS may be disposed so as to overlap the absorbent core 50 in the front-rear direction L. A region that overlaps with the absorbent core 50 in the front-rear direction L is likely to receive a force from the absorbent core 50 toward the front side. By providing the sheet non-bonding region NS in at least a part of the region, the deformation by the absorbent core 50 is absorbed by the front end portion 45 of the absorbent main body 40, and the displacement of the exterior body 15 in the front waistline region S1 can be suppressed.

  More preferably, the sheet non-joining region NS may be disposed so as to overlap with the central region CR in the front-rear direction L. When the wearer moves the leg in the front-rear direction with the absorbent core 50 sandwiched between the wearer's legs, the force tends to concentrate on the center of the absorbent core 50 in the width direction W, and the shape of the front end 45 of the absorbent core 50 The center of the width direction W tends to protrude more forward than the side part of the width direction W. Therefore, a force directed from the absorbent core 50 toward the front side is more likely to be applied to the region that overlaps with the central region CR in the front-rear direction. By providing the sheet non-joining region NS in the region, the deformation by the absorbent core 50 is absorbed by the front end portion 45 of the absorbent main body 40, and the deformation of the exterior body 15 can be further suppressed.

  More preferably, the sheet non-bonding region NS may be disposed so as to overlap with the entire width direction W of the absorbent core 50 in the front-rear direction. By providing the sheet non-bonding region NS in a region that overlaps the width direction W and the front-rear direction of the absorbent core 50, the deformation due to the absorbent core 50 is absorbed by the front end 45 of the absorbent main body 40, and the exterior body 15 Deformation can be further suppressed.

  The absorbent article 10 may have a main body non-joining region NB in which the absorbent main body 40 and the front exterior body 20 are not joined. The main body non-joining region NB may be a region where the sheet disposed opposite to the front exterior body 20 and the front exterior body 20 are not joined among the sheets constituting the absorbent main body 40. Specifically, in the form in which the second main body sheet 42B is disposed on the entire non-skin facing surface of the absorbent main body 40, the second main body sheet 42B and the front exterior body 20 are not joined. It's okay. In the form in which the second main body sheet 42B and the liquid impermeable sheet 41 are disposed on the non-skin facing surface of the absorbent main body 40, the second main body sheet 42B and the front exterior body 20 are not joined to each other; The impermeable sheet 41 and the area | region where the front side exterior body 20 is not joined may be included. At least a part of the main body non-joining region NB may be provided in the front end portion 45. The main body non-joining region NB may be provided in the entire area of the front end portion 45 or may be provided in a part of the front end portion 45.

  The absorbent article 10 may have an overlapping region DR where the sheet non-bonding region NS and the main body non-bonding region NB overlap. The overlapping region DR is a region where the sheet non-bonding region NS and the main body non-bonding region NB overlap in the thickness direction T. At least a part of the overlapping region DR may be provided in the front end portion 45. The overlapping region DR may be provided in the entire area of the front end portion 45 or may be provided in a part of the front end portion 45.

  The front end edge of the main body non-joining area NB and the front end edge of the sheet non-joining area NS may coincide with the front end edge 40F of the absorbent main body 40, and are located on the rear side of the front end edge 40F of the absorbent main body 40. Also good. Preferably, the main body non-joining region NB and the sheet non-joining region NS may be provided at the front end edge of the absorbent main body 40. Since both the main body non-joining region NB and the sheet non-joining region NS are provided at the front end edge of the absorbent main body 40, it becomes easier to deform. The deformation due to the absorbent core 50 is absorbed by the front end edge of the absorbent main body 40, and it becomes difficult to push up the front exterior body 20 by the absorbent main body 40, and the deformation of the exterior body 15 can be further suppressed.

  Of the first sheet material and the second sheet material that are not joined in the sheet non-joining region NS, at least the first sheet material may be the liquid-impermeable sheet 41. Compared to the configuration in which the liquid-impermeable sheet 41 and the main body sheet 42 are joined, the rigidity of the front end portion 45 of the absorbent main body 40 is lowered, and the front end portion 45 of the absorbent main body 40 is easily deformed. In particular, the liquid impervious sheet 41 is constituted by a film or the like, and many of the liquid impervious sheets have higher rigidity than the liquid permeable sheet. The sheet non-bonding region NS can reduce the rigidity of the liquid-impermeable sheet 41, and the front end portion 45 of the absorbent main body 40 is easily deformed.

  The second sheet material is disposed on the skin facing surface side T1 of the first sheet material, and the first sheet material and the second sheet material overlap with the absorbent core 50 in the thickness direction T and the front end portion 45. And may be disposed across the absorbent core 50 in the thickness direction T. The sheet material arranged with the absorbent core 50 sandwiched in the thickness direction T is more likely to receive a force from the absorbent core 50. Since the sheet non-bonding region NS is provided between the sheet materials arranged with the absorbent core 50 interposed therebetween, it is difficult to transmit the force from the absorbent main body 40 toward the front side by the front exterior body 20, and the position of the front exterior body 20 Deviation can be suppressed.

  The absorbent article 10 may have a sheet bonding area AS in which the liquid-impermeable sheet 41 and the main body sheet 42 are bonded to the crotch area side of the sheet non-bonding area NS. The sheet bonding area AS is adjacent to the sheet non-bonding area NS in the front-rear direction. The sheet bonding area AS is an area for bonding sheets that are not bonded in the sheet non-bonding area NS.

  In the form in which the sheet non-bonding region NS is provided between the sheets sandwiching the absorption core 50 in the thickness direction and straddling the absorption core 50 and the front end portion 45, the sheet non-bonding region NS is located on the crotch region side. The inner end edge, that is, the front end edge of the sheet bonding region AS may be disposed in front of the absorbent core 50. The inner end edge on the crotch region side of the sheet non-bonding region NS may be disposed in front of the absorbent core 50. Since the inner end edge on the crotch region side of the sheet non-joining region NS is located in front of the absorbent core 50, the sheet joint region AS is provided in front of the absorbent core 50. It is possible to prevent the absorbent material constituting the absorbent core 50 from leaking out of the absorbent main body 40 by the region where the liquid-impermeable sheet 41 and the main body sheet are joined.

  Moreover, in the front-end part 45 of the absorptive main body 40, it is located in the 1st sheet material, the 2nd sheet material located in the skin opposing surface side T1 of a 1st sheet material, and the non-skin opposing surface side T2 of a 1st sheet material. And a third sheet material. The liquid impervious sheet 41 of the present embodiment may constitute a first sheet material, the first main body sheet 42A may constitute a second sheet material, and the second main body sheet 42B may constitute a third sheet material. In such a form, in the sheet non-bonding region NS, the liquid-impermeable sheet 41 may not be bonded to the first main body sheet 42A and may not be bonded to the second main body sheet 42B. Since the liquid impervious sheet 41 is not joined to the first main body sheet and the second main body sheet, the liquid impermeable sheet 41 is more easily deformed. Therefore, the front end portion 45 of the absorbent main body 40 is more easily deformed, the deformation of the exterior body 15 is suppressed, and the displacement of the exterior body 15 in the front waistline region can be suppressed.

  The length in the front-rear direction L of the region where the first sheet material is not joined to the second sheet material may be longer than the length in the front-rear direction L of the region where the first sheet material is not joined to the third sheet material. . The first sheet material and the second sheet material arranged with the absorbent core 50 sandwiched in the thickness direction T are more likely to receive a force from the absorbent core 50. Since the length in the front-rear direction L of the region where the first sheet material is not joined to the second sheet material is relatively long, it is difficult for the front-side exterior body 20 to transmit the force from the absorbent main body 40 to the front side. 20 positional shifts can be suppressed.

  Further, the cover sheet 27 may be arranged at a position overlapping with at least a part of the sheet non-bonding region NS in the thickness direction T. The front end portion 45 of the absorbent main body 40 is provided with a sheet non-joining region NS where the sheet materials are not joined to each other, and the front edge of the sheet material may hit the skin. By covering the sheet non-bonding region NS with the cover sheet 27, the front edge of the sheet material is less likely to hit the skin, and irritation to the skin can be suppressed.

  The cover sheet 27 may be disposed so as to overlap the entire area of the sheet non-bonding area NS. The entire area of the sheet non-bonding area NS is an area including the entire area in the front-rear direction of the sheet non-bonding area NS and the entire area in the width direction of the sheet non-bonding area NS. By covering the entire sheet non-bonding region NS with the cover sheet 27, not only the front edge of the sheet material but also the entire region where the sheet material is likely to float in the thickness direction can be covered. Therefore, the irritation | stimulation to skin can be suppressed more.

  The absorbent article 10 may have a cover non-joining area NC where the absorbent main body 40 and the cover sheet 27 are not joined, and a cover joint area AC where the absorbent main body 40 and the cover sheet 27 are joined. The cover non-joining region NC may be a region where the sheet disposed facing the cover sheet 27 and the cover sheet 27 among the sheets constituting the absorbent main body 40 are not joined. The cover joining area AC may be an area where a sheet disposed facing the cover sheet 27 and a cover sheet 27 among the sheets constituting the absorbent main body 40 are joined. The cover non-joining area NC is an area where the rigidity is low compared to the area where the cover sheet and the absorbent main body 40 are joined, and the cover sheet is easily deformed.

  The cover non-joining region NC may be disposed so as to overlap a part of the sheet non-joining region NS in the thickness direction. The front end 45 of the absorbent main body 40 is not joined to the cover sheet, and is easy to move with respect to the cover sheet. Even when the cover sheet located on the skin facing surface side of the wearer is in close contact with the skin and the cover sheet is difficult to deform, the front end portion 45 of the absorbent main body 40 is easily deformed and the exterior body 15 is lifted. It can suppress and the position shift of the exterior body 15 in a front waist area and a back waist area can be suppressed.

  Further, the cover bonding area AC may be disposed so as to overlap a part of the sheet non-bonding area NS in the thickness direction. An area where the sheet non-bonding area NS and the cover bonding area AC overlap and an area where the sheet non-bonding area NS and the cover bonding area AC do not overlap may be provided. The area where the sheet non-bonding area NS and the cover bonding area AC overlap is different from the area where the sheet non-bonding area NS and the cover bonding area AC do not overlap. When the force is received from the absorption core 50 by the two regions, the force is deformed stepwise and the force received from the absorption core 50 is more easily absorbed. Therefore, it is difficult to transmit the force from the absorbent main body 40 toward the front side by the front exterior body 20, and the displacement of the front exterior body 20 can be suppressed.

  The cover bonding area AC may be disposed so as to overlap the sheet bonding area AS in the thickness direction T. The area where the cover bonding area AC and the sheet bonding area AS overlap is compared with the area where the cover bonding area AC and the sheet non-bonding area NS overlap or the area where the cover non-bonding area NC and the sheet non-bonding area NS overlap. And high rigidity. Since the region with high rigidity is provided on the crotch region side with respect to the sheet non-bonding region NS, the force from the absorption core 50 toward the outside in the front-rear direction is applied to the sheet material and the cover sheet 27 through the region with high rigidity. Can be distributed. It is easier to absorb the force received from the absorbent core 50 by both the sheet material and the cover sheet 27. Therefore, it is difficult to transmit the force from the absorbent main body 40 toward the front side by the front exterior body 20, and the displacement of the front exterior body 20 can be suppressed.

  The positional relationship in the front-rear direction of the sheet non-joining area NS and the main body non-joining area NB is not limited. The front end edge of the sheet non-joining region NS may be a front side of the front end edge of the main body non-joining region NB, or may be a rear side of the front end edge of the main body non-joining region NB. The rear end edge of the sheet non-joining region NS may be in front of the rear end edge of the main body non-joining region NB, or may be rearward of the rear end edge of the main body non-joining region NB. Preferably, the sheet non-bonding region NS may extend to the crotch region side with respect to the main body non-bonding region NB. The liquid impervious sheet 41 is often more rigid than the liquid permeable sheet, and the sheet non-joining region NS is more likely to have the effect of lowering the rigidity than the main body non-joining region NB. Since the sheet non-bonding region NS extends to the crotch region side relative to the main body non-bonding region NB, it is easier to obtain the effect of absorbing the deformation of the absorbent core 50 by the deformation of the absorbent main body 40.

  The positional relationship in the width direction W between the sheet non-bonding region NS and the main body non-bonding region NB is not limited. The outer edge of the sheet non-joining region NS may be outside the outer edge of the main body non-joining region NB, or may be inside the outer edge of the main body non-joining region NB. Preferably, the sheet non-joining region NS may extend outside the main body non-joining region NB in the width direction W. Since the sheet non-bonding region NS extends outward in the width direction from the main body non-bonding region NB, the rigidity can be reduced over the entire width direction of the main body non-bonding region NB. Due to the deformation of the front end portion of the absorbent main body, it is easier to suppress the deformation that causes the exterior body to float.

  The absorbent article 10 may have an exterior non-bonding region NE. The exterior non-bonding region NE is a region where the two sheets of the first exterior sheet 25, the second exterior sheet 26, and the cover sheet 27 are not joined to each other. The exterior non-bonding region NE may be provided on the front side of the front end edge 40F of the absorbent main body 40. Since the exterior non-bonding region is provided in front of the front end edge of the absorbent main body, the rigidity on the front side is lower than the front end edge of the absorbent main body compared to the configuration in which all the exterior sheets are bonded to each other. Become. When the front end edge of the absorbent main body moves toward the outside in the front-rear direction, the exterior non-joining region is deformed to absorb the force, and when the front end edge of the absorbent main body moves toward the outer side in the front-rear direction The outer non-joining region NE can be deformed to absorb the force, and the entire front outer body can be prevented from being deformed. Therefore, the position shift of the exterior body in the front waistline region can be suppressed, and the wearer's abdomen can be continuously covered.

  An exterior bonding area AE in which the exterior sheets are bonded to each other may be provided in front of the exterior non-bonding area NE. The exterior joining area AE may include an area where the cover sheet 27 is joined to the exterior sheet and an area where the exterior sheets are joined together. The exterior joining area AE is likely to be more rigid than the exterior non-joining area NE. In addition, the region where the absorbent main body 40 is disposed is also likely to have higher rigidity than the exterior non-bonding region NE. The exterior non-joining region NE is sandwiched in the front-rear direction L by a region having high rigidity, and when the front end edge 40F of the absorbent main body 40 moves toward the front side, the exterior non-joining region NE is more deformed and easily absorbs the force. Therefore, the position shift of the front exterior body can be further suppressed.

  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.

  The absorbent article which can suppress the position shift of the exterior body in a front waist area by movement of a wearer's leg can be provided.

DESCRIPTION OF SYMBOLS 10 Absorbent article 15 Exterior body 20 Front side exterior body 27 Cover sheet 30 Rear side exterior body 40 Absorbent main body 41 Liquid impervious sheet 42A First main body sheet 42B Second main body sheet 45 Front end 50 Absorbing core 60 Side joint AS sheet Bonding area AC Cover bonding area AE Exterior bonding area DR Overlapping area OR Overlapping area NB Body non-bonding area NC Cover non-bonding area NE Exterior non-bonding area NS Sheet non-bonding area S1 Front waistline area S2 Rear waistline area S3 Inseam area L Front-back direction W width direction

Claims (14)

Forward and backward,
A width direction orthogonal to the front-rear direction;
Front waist area,
Rear waist area,
A crotch region disposed between the front waistline region and the rear waistline region;
An absorbent main body disposed across the inseam area, the front waistline area and the rear waistline area;
On the non-skin facing surface side of the absorbent main body, an absorbent article having a front exterior body disposed in the front waistline region,
The absorbent main body has an absorbent core, and a front end extending to the front side of the absorbent core,
The front end portion of the absorbent main body is provided with an overlapping region in which the first sheet material and the second sheet material overlap in the thickness direction,
The absorbent article, wherein a sheet non-joining region in which the first sheet material is not joined to the second sheet material is provided at a front edge of the overlapping region.   The absorbent article according to claim 1, wherein the sheet non-joining region is disposed so as to overlap the absorbent core in the front-rear direction. The absorbent main body is a region obtained by dividing the entire length of the absorbent core in the width direction into three equal parts and has a central region located in the center of the absorbent core in the width direction;
The absorbent article according to claim 2, wherein the sheet non-joining region is disposed so as to overlap the central region in the front-rear direction.   The said sheet | seat non-joining area | region is an absorbent article of Claim 2 or Claim 3 arrange | positioned in the said front-back direction and the whole area of the said width direction of the said absorption core.   The absorptive article according to any one of claims 1 to 4, wherein at least the first sheet material of the first sheet material and the second sheet material is a liquid-impermeable sheet. The second sheet material is disposed on the skin facing surface side of the first sheet material,
The first sheet material and the second sheet material are disposed across a region overlapping the absorbent core in the thickness direction and the front end portion, and are disposed with the absorbent core sandwiched in the thickness direction. The absorbent article according to any one of claims 1 to 5, wherein the absorbent article is used. The second sheet material is disposed on the skin facing surface side of the first sheet material,
A third sheet material located on the non-skin facing surface side of the first sheet material is disposed at the front end of the absorbent main body,
The said 1st sheet | seat material is not joined to the said 2nd sheet | seat material, and is not joined to the said 3rd sheet | seat material in the said sheet | seat non-joining area | region. The absorbent article as described. The first sheet material and the second sheet material are disposed across the absorption core in the thickness direction,
The length in the front-rear direction of the region where the first sheet material is not joined to the second sheet material is greater than the length in the front-rear direction of the region where the first sheet material is not joined to the third sheet material. The absorbent article according to claim 7, which is also long. It is arranged on the skin facing surface side of the absorbent main body, and has a cover sheet that covers the front end edge of the absorbent main body,
The absorbent article according to any one of claims 1 to 8, wherein the cover sheet is disposed to overlap at least a part of the sheet non-bonding region in a thickness direction.   The absorbent article according to claim 9, wherein the cover sheet is disposed so as to overlap the entire region of the sheet non-joining region.   The absorbent article according to claim 9 or 10, wherein a cover joining region in which the cover sheet is joined to the absorbent main body is disposed so as to overlap a part of the sheet non-joining region in a thickness direction. . On the crotch region side than the sheet non-bonding region, a sheet bonding region in which the first sheet material is bonded to the second sheet material is provided,
The absorption according to any one of claims 9 to 11, wherein a cover joining region where the cover sheet and the absorbent main body are joined is disposed to overlap the sheet joining region in the thickness direction. Sex goods.   The absorptivity according to any one of claims 1 to 12, wherein a main body non-joining region in which the absorbent main body and the front exterior body are not joined is provided at a front end edge of the overlapping region. Goods.   The absorbent article according to claim 13, wherein the sheet non-bonding region extends outward in the width direction from the main body non-bonding region.

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