JP6524325B1 - Absorbent articles - Google Patents

Abstract

An absorbent article capable of improving the performance of preventing rewet while suppressing side leakage. An absorbent article includes an absorbent core (31), a skin side sheet (20) disposed on the skin side with respect to the absorbent core, and an intermediate disposed on the skin side with respect to the skin side sheet. It has a sheet (15) and a top sheet (10) that covers the surface of the intermediate sheet on the skin surface side. In the absorbent article, a pair of folding lines (FL1, FL2) for folding so that the skin surface sides face each other are formed along the front-rear direction. The top sheet has a folded portion (12) that is folded to the non-skin side on the outer side in the width direction than the intermediate sheet. The bonding area (R11) in which the folded back part is bonded to the skin side sheet, and the non-bonding area (R12) in which the folded back part is not bonded to the skin side sheet outside the bonding area in the width direction It is provided. [Selected figure] Figure 2

Description

  The present invention relates to absorbent articles such as sanitary napkins.

  DESCRIPTION OF RELATED ART Conventionally, the sanitary napkin as an absorbent article is known. For example, Patent Document 1 has an absorbent core, a top sheet disposed on the skin facing surface side of the absorbent core, and an absorbent article in which the top sheet is provided with folded portions turned back on both sides in the width direction. Is disclosed. Before use, the absorbent article of Patent Document 1 extends in the front-rear direction and is folded so that the skin-facing surfaces of the absorbent article face each other via a folding line. The fold line overlaps the folded portion of the top sheet. The folded back portion of the top sheet can be erected on the wearer's side by a fold when worn. Lateral leakage can be suppressed by the folded portion of the top sheet hitting the body on the side of the wearer's excretion opening.

Patent No. 6313817 gazette

  Absorbent articles such as sanitary napkins generally continue to be worn for a certain period of time after absorbing excrement. If the absorbent article continues to be worn after absorbing the excrement, the body fluid absorbed by the body pressure applied to the absorbent article may rewet. Therefore, it is required to prevent rewet.

  Therefore, the absorbent article which can improve the performance which prevents rewet, controlling a side leak is desired.

  In the absorbent article according to one aspect, the front and back direction and width direction orthogonal to each other, the top sheet, the intermediate sheet disposed on the non-skin opposing surface side of the top sheet, and the non-skin opposing surface of the top sheet The absorbent article has a skin side sheet disposed on the side and an absorbent core disposed on the non-skin facing side with respect to the intermediate sheet, and the skin facing sides of the absorbent article are opposed to each other. A pair of folding lines for folding the sheet along the front-rear direction, wherein the top sheet is folded to the non-skin opposing surface side outside the width direction of the intermediate sheet In the bonding area where the folded part is joined and the folded part is joined to the skin side sheet, the folded part is not joined to the skin side sheet at the outer side in the width direction than the joined area Non junction A region is provided, at least a part of the non-bonding region being disposed outside the width direction with respect to the folding line, and the folding line is the outer side of the intermediate sheet in the non-bonding region It is formed outside the edge in the width direction.

  An absorbent article according to another aspect has an anteroposterior direction and a width direction orthogonal to one another, a top sheet, and an absorbent core disposed closer to the non-skin facing surface than the top sheet, and an absorbent article An absorbent article having a pair of folding lines formed along the front-rear direction so as to fold the absorbent article so that the skin-facing surfaces of the absorbent article face each other, wherein the outer edge of the absorbent core is the folding line It has a sheet layer located on the inner side in the width direction and covering the surface on the non-skin facing surface side of the absorbent core, at least the absorbent core and the sheet layer at the center in the width direction of the absorbent core Indented in the thickness direction, having a central guiding portion along the longitudinal direction, the top sheet has a folded portion folded back to the non-skin facing surface side outside the width direction, and the folded portion is the skin Bonded to face side sheet And a non-joining area where the folded portion is not joined to the skin side sheet outside the width direction with respect to the joining area, and at least a part of the non-joining area is The folding line is disposed outside the folding line in the width direction, and the folding line is formed in the non-joining area.

FIG. 1 is a plan view of an absorbent article in one embodiment. 2 is a cross-sectional view of the absorbent article taken along line 2A-2A shown in FIG. FIG. 3 is a figure for demonstrating the folding aspect of an absorbent article. FIG. 4: is the figure which showed typically the wearing condition in the cross section which followed the 2A-2A line shown in FIG. FIG. 5 schematically shows a modification of the absorbent core and the tissue layer in the cross section based on FIG. 4.

(1) Outline of Embodiment At least the following matters will become clear by the description of the present specification and the attached drawings.
In the absorbent article according to one aspect, the front and back direction and width direction orthogonal to each other, the top sheet, the intermediate sheet disposed on the non-skin opposing surface side of the top sheet, and the non-skin opposing surface of the top sheet The absorbent article has a skin side sheet disposed on the side and an absorbent core disposed on the non-skin facing side with respect to the intermediate sheet, and the skin facing sides of the absorbent article are opposed to each other. A pair of folding lines for folding the sheet along the front-rear direction, wherein the top sheet is folded to the non-skin opposing surface side outside the width direction of the intermediate sheet In the bonding area where the folded part is joined and the folded part is joined to the skin side sheet, the folded part is not joined to the skin side sheet at the outer side in the width direction than the joined area Non junction A region is provided, at least a part of the non-bonding region being disposed outside the width direction with respect to the folding line, and the folding line is the outer side of the intermediate sheet in the non-bonding region It is formed outside the edge in the width direction.

  According to this aspect, the non-joining area outside the first folding line and the second folding line in the width direction is provided with an upright portion which can be erected by the wearer by the fold when worn. The upright portion of the top sheet hits the body on the side of the wearer's excretory port, and lateral leakage can be suppressed. Also, the body fluid guided to the intermediate sheet through the top sheet diffuses in the intermediate sheet and is guided to the outer edge of the intermediate sheet. The outer edge of the intermediate sheet is positioned inward in the width direction than the fold line, and it is difficult for the body fluid to reach the rising portion. In addition, when body pressure is applied to the absorbent core that has absorbed the body fluid, the body fluid may exude to the side facing the skin. At this time, a space is formed between the rising portion and the skin side sheet, so that even if the body fluid is guided from the absorbent core to the skin side sheet, the body fluid does not easily reach the rising portion . Thus, rewet of the body fluid through the rising portion can be suppressed. Therefore, the performance which prevents a rewet can be improved, suppressing a side leak.

  An absorbent article according to another aspect has an anteroposterior direction and a width direction orthogonal to one another, a top sheet, and an absorbent core disposed closer to the non-skin facing surface than the top sheet, and an absorbent article An absorbent article having a pair of folding lines formed along the front-rear direction so as to fold the absorbent article so that the skin-facing surfaces of the absorbent article face each other, wherein the outer edge of the absorbent core is the folding line It has a sheet layer located on the inner side in the width direction and covering the surface on the non-skin facing surface side of the absorbent core, at least the absorbent core and the sheet layer at the center in the width direction of the absorbent core Indented in the thickness direction, having a central guiding portion along the longitudinal direction, the top sheet has a folded portion folded back to the non-skin facing surface side outside the width direction, and the folded portion is the skin Bonded to face side sheet And a non-joining area where the folded portion is not joined to the skin side sheet outside the width direction with respect to the joining area, and at least a part of the non-joining area is The folding line is disposed outside the folding line in the width direction, and the folding line is formed in the non-joining area.

  According to this aspect, the non-joining area outside the first folding line and the second folding line in the width direction is provided with an upright portion which can be erected by the wearer by the fold when worn. The upright portion of the top sheet hits the body on the side of the wearer's excretory port, and lateral leakage can be suppressed. In addition, when body pressure is applied to the absorbent core that has absorbed the body fluid, the body fluid may exude to the side facing the skin. At this time, a space is formed between the rising portion and the skin side sheet, so that even if the body fluid is guided from the absorbent core to the skin side sheet, the body fluid does not easily reach the rising portion . Thus, rewet of the body fluid through the rising portion can be suppressed. Also, the absorbent core and the sheet layer have a central guiding portion disposed at the center in the width direction of the absorbent core. The central guiding portion is recessed in the thickness direction. The body fluid guided to the absorbent core through the top sheet is drawn by the central guiding portion and guided to the sheet layer disposed on the non-skin facing side of the absorbent core. By drawing the excreted body fluid into the non-skin opposing surface side, rewet of the body fluid can be suppressed. Therefore, the performance which prevents a rewet can be improved, suppressing a side leak.

  According to a preferable aspect, at least both of the absorbent core may be compressed in the thickness direction and a pair of pressing portions may be provided along the front-rear direction on both sides in the width direction of the central guiding portion.

  According to this aspect, at the time of wearing, the absorbent core is easily deformed from the central guiding portion along the longitudinal direction and the pair of squeezed portions along the longitudinal direction as a base point. Therefore, if the force of pinching of a leg of a wearer acts, the shape where a central guidance part stands up on the wearer side can be realized on the basis of the pressing parts located on both sides in the width direction. By deforming the absorbent core in a convex shape toward the wearer, the central guiding portion and the excretory port can be disposed close to each other, and body fluid from the excretory port can be easily drawn in via the central guiding portion. In addition, when the body fluid is diffused on the skin facing surface side of the absorbent core or when the body fluid is diffused in the absorbent core, it is not possible to introduce the body fluid to the non-skin facing surface side through the central guiding portion. The body fluid can be guided in the front-rear direction by the squeezing portion located on the outer side in the width direction than the induction portion, and lateral leakage of the body fluid can be suppressed.

  According to a preferred aspect, the outer edge of the absorbent core may be located inside the width direction with respect to the folding line.

  According to this aspect, compared to the configuration in which the absorbent core and the top sheet are both folded, the pressure at the time of folding is small, and the curing of the top sheet can be suppressed. Therefore, it is possible to soften the contact of the standing portion against the skin. In addition, compared to a configuration in which the absorbent core and the top sheet are both folded, the absorbent core is difficult to follow the absorbent core due to folding when worn, and tends to stand up with respect to the absorbent core. It is possible to maintain the uprightness of the upright portion and to improve the performance of preventing rewet while suppressing lateral leakage.

  According to a preferred embodiment, the absorbent core may have a tissue layer covering a surface of the absorbent core facing the skin, and the fold line may be formed in the tissue layer.

  According to this aspect, when the tissue layer is folded by the fold line, the gaps between the fibers are expanded when it is folded. Therefore, the density of the portion where the folding line is formed is lower than the density of the portion where the folding line is not formed. The density of the tissue layer is in the order of high, low, high from the center in the width direction of the absorbent article to the side. Therefore, when the body fluid diffuses in the tissue layer, even if the body fluid reaches the portion where the fold lines are formed (the portion with low density), the portion where the side fold lines are not formed (the density is high) It is hard to spread body fluid to the part). It is difficult for the body fluid to diffuse to the area overlapping the rising portion, and rewetting through the rising portion can be suppressed.

  According to a preferred embodiment, the absorbent core may have a sheet layer covering the surface on the non-skin-facing side of the absorbent core, and the sheet layer may extend outward in the width direction more than the tissue layer.

  According to this aspect, the length in the width direction is longer in the sheet layer than in the tissue layer, and the sheet layer is more likely to draw body fluid into the interstices between the fibers than the tissue layer. In the above, the body fluid can be diffused to suppress rewet on the skin facing surface side.

  According to a preferred embodiment, an embossed portion for joining the top sheet and the intermediate sheet may be formed, and the embossed portion may be formed only in a region where the intermediate sheet is disposed.

  According to this aspect, the embossed portion is recessed in the thickness direction, and the body fluid can be diffused in the planar direction. At this time, since the embossed portion is formed only in the region in which the intermediate sheet is disposed, the body fluid is less likely to diffuse to the outside in the width direction than the intermediate sheet, and is less likely to diffuse to the rising portion of the top sheet. Therefore, the performance which prevents rewet while suppressing side leakage can be improved.

  According to a preferred aspect, in plan view of the absorbent article, the embossed portion has a line embossed portion extending linearly and disposed in a lattice shape, and a point embossed portion having a dot shape, The said line embossing part is arrange | positioned at intervals in the direction to which the said line embossing part extends, The said point embossing part is arrange | positioned in the corner part of the said grid shape between the said line embossing parts, The width may be longer than the width of the line embossed portion.

  According to this aspect, the body fluid diffused through the line embossed portion reaches the point embossed portion. The point embossing parts are located at the corners of the lattice shape, and the body fluid is collected through the plurality of line embossing parts. The embossed portion is recessed in the thickness direction, has a short distance from the absorbent core, and easily guides the body fluid to the absorbent core. Since the width of the point embossed portion is longer than the width of the line embossed portion, the collected body fluid can be more easily introduced to the absorbent core. By directing the body fluid away from the body, rewet can be further suppressed.

  According to a preferred embodiment, the adhesive includes an adhesive for bonding the top sheet and the intermediate sheet, wherein the adhesive forms a predetermined pattern in plan view, and the predetermined pattern is an omega pattern, It may have a wave pattern or a spiral pattern.

  According to this aspect, the top sheet and the intermediate sheet are joined by the embossed portion and the adhesive. By providing the embossed portion and the adhesive together, the area of the embossed portion can be reduced, and the reduction in touch can be suppressed. In addition, an area in which the adhesive is disposed and an area in which the adhesive is not disposed can be provided, and in the area where the adhesive is not disposed, the draw-in property of the body fluid can be secured.

=== About the absorbent article according to the present embodiment ===
Hereinafter, the absorbent article according to the embodiment will be described with reference to the drawings. In the following embodiments, a disposable sanitary napkin will be described as an example of the absorbent article.

  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 may be different from actual ones. Therefore, specific dimensions and the like should be determined in consideration of the following description. In addition, parts having different dimensional relationships and proportions may be included between the drawings.

(1) Overall Schematic Configuration of Absorbent Article FIG. 1 is a plan view of an absorbent article in one embodiment. 2 is a cross-sectional view of the absorbent article taken along line 2A-2A shown in FIG. FIG. 4: is the figure which showed typically the wearing condition in the cross section which followed the 2A-2A line shown in FIG. In FIG. 2, for convenience of explanation, the members constituting the absorbent article are spaced apart in the thickness direction, but in an actual product, each member has a joined part.

  The absorbent article 1 has a front-rear direction L and a width direction W orthogonal to each other, and has a thickness direction T extending from the skin facing surface T1 of the wearer to the non-skin facing surface T2. The skin facing side T1 corresponds to the side facing the skin of the wearer during use. The non-skin facing side T2 corresponds to the side opposite to the skin facing side T1, that is, the side facing away from the wearer's skin, in use.

  Absorbent article 1 has crotch area S1, front side area S2, and back side area S3. The crotch region S1 is a region facing the wearer's excretion opening, for example, a vaginal opening. When the absorbent article 1 is attached to the undergarment, the crotch area S1 is an area which is disposed in the crotch of the undergarment and is disposed between the legs of the wearer. The front side area S2 is located on the front side of the crotch area S1. The front end edge of the front side area S2 defines the front end edge of the absorbent article 1. The rear area S3 is located rearward of the crotch area S1. The rear end edge of the rear area S3 defines the rear end edge of the absorbent article 1.

  The absorbent article 1 has wings 3. The wings 3 extend outside the outer edge 31E of the absorbent core 31 in the crotch region S1 in the width direction W. The wing 3 is provided in the crotch region S1. The front end edge of the wing 3 is defined by the root of the wing 3 and corresponds to the portion located on the front side among the two portions recessed most in the width direction W. The front end edge of the wing 3 defines the boundary between the crotch region S1 and the front region S2. The rear end edge of the wing 3 is defined by the root of the wing 3 and corresponds to the portion located on the rear side among the two portions recessed most in the width direction W. The rear end edge of the wing 3 defines the boundary between the crotch region S1 and the rear region S3.

  The absorbent article 1 may have at least an absorbent core 31, a skin side sheet 20, an intermediate sheet 15, a top sheet 10, and a back sheet 25. The absorbent core 31 is disposed at least in the crotch region S1 and the rear region S3, and may be disposed from the front region S2 to the rear region S3. The absorbent core 31 has an absorbent material that absorbs liquid. This embodiment may have pulp and SAP as an absorbent material. The absorbent core according to the modification may not have SAP.

  The skin side sheet 20 is disposed closer to the skin facing side T1 than the absorbent core 31. The skin side sheet 20 of the present embodiment is disposed between a tissue layer 32 described later and the folded portion 11 of the top sheet 10. The skin side sheet 20 constitutes the surface of the wing facing the skin, the outer edge 20E of the skin side sheet 20 reaches the outer edge of the wing 3, and the wing is on the non-skin facing side of the undergarment In the unfolded state, the outer edge of the absorbent article is reached. The skin side sheet 20 may be provided in a pair at the left and right with an interval in the width direction. The inner edge 20I of the skin side sheet 20 may not reach the center in the width direction of the absorbent article, but may coincide with the inner edge of the folded back portion, and may be outside the width edge of the absorbent core 31 May be located. The skin side sheet may be made of non-woven fabric, and its surface may be treated to be hydrophobic.

  The intermediate sheet 15 is disposed closer to the skin facing surface T1 than the skin side sheet 20 is. The intermediate sheet 15 of the present embodiment is disposed between the non-folded portion 12 not folded back in the top sheet 10 and the tissue layer 32. The surface on the skin facing surface side T1 of the intermediate sheet 15 is covered by the non-folded portion 12 of the top sheet 10 throughout. The surface of the non-skin facing surface T2 of the intermediate sheet 15 is covered with the tissue layer 32 throughout. In the modification, the outer side of the non-skin facing surface T2 of the intermediate sheet 15 may be covered by the folded portion 11 of the top sheet 10. The outer edge 15E of the intermediate sheet 15 may be located outside in the width direction than the outer edge 31E of the absorbent core 31, and may coincide with the inner edge 11I of the folded portion 11.

  The top sheet 10 covers the surface of the intermediate sheet 15 facing the skin T 1. The top sheet 10 has a folded portion 11 folded back to the non-skin facing surface side T2 based on the folded line RL, and a non-folded portion 12 not folded back to the base point RL. The folded back portion 11 is folded back to the non-skin facing surface side T2 outside the intermediate sheet 15 in the width direction W. That is, the folding line RL is located outside the outer edge 15E of the intermediate sheet 15 in the width direction W. The folded portion 11 overlaps the non-folded portion 12, and the folded portion 11 and the non-folded portion 12 are stacked in a region outside the intermediate sheet 15 in the width direction W. The folded portion 11 and the non-folded portion 12 may not be joined to each other.

  In the absorbent article 1, the bonding area R11 in which the folded back portion 11 is bonded to the skin side sheet 20 and the folded back portion 11 in the width direction W outside the bonding area R11 are not bonded to the skin side sheet 20 And a non-junction region R12. The bonding area R11 is an area provided with the bonding portion 14 for bonding the folded portion 11 and the skin side sheet 20 in a plan view. The non-bonding region R12 is a region in which the bonding portion 14 is not provided outside the bonding portion 14 in the width direction in plan view. The outer edge of the non-junction region R12 coincides with the folding line RL. In the embodiment in which a plurality of bonding portions 14 are formed, the non-bonding region R12 is a region outside in the width direction than the bonding portion 14 located at the outermost side in the width direction among the plurality of bonding portions. Bonding region R11 is provided separately from folding line RL. The non-joining area R12 can rise on the skin facing surface side with the joint 14 as a base point.

  The inner edge 11I of the folded back portion 11 may be located outside the outer edge 31E of the absorbent core 31 in the width direction W, and may coincide with the inner edge 20I of the skin side sheet 20. The folding line RL may be located outside in the width direction than the outer edge 32E of the tissue layer 32, and may be located outside in the width direction than the outer edge 33E of the sheet layer 33. The non-folded portion 12 covers the entire surface of the intermediate sheet 15 facing the skin.

  The tissue layer 32 covers the surface of the absorbent core 31 on the side facing the skin T1. The outer edge 32E of the tissue layer 32 is located on the outer side in the width direction than the outer edge of the absorbent core 31, is located on the inner side in the width direction than the outer edge 33E of the sheet layer 33, and is higher than the outer edge of the intermediate sheet 15. It may be located outside in the width direction. In the region outside the absorbent core 31 in the width direction, the tissue layer 32 covers the surface of the sheet layer 33 facing the skin. Further, the tissue layer 32 covers the non-skin facing surface T2 of the intermediate sheet 15. In the region outside the intermediate sheet in the width direction, the tissue layer 32 covers the non-skin facing surface T2 of the skin side sheet 20.

  The sheet layer 33 is positioned between the absorbent core 31 and the back sheet 25 and covers the non-skin facing surface T2 of the absorbent core 31. In the region outside the absorbent core and the tissue layer 32 in the width direction, the sheet layer 33 covers the non-skin facing surface T2 of the skin side sheet 20. The sheet layer 33 may be a sheet made of air-laid pulp (an absorbent sheet obtained by joining pulp with a binder to form a sheet). By forming the sheet layer 33 by air laid pulp, the draw-in property of the body fluid through the central guiding portion described later can be improved.

  The back sheet 25 is disposed on the entire area of the absorbent article, and is provided on the most non-skin facing surface side in the thickness direction. The back sheet 25 is disposed on the non-skin facing surface side of the sheet layer 33. In the area outside the sheet layer 33 in the width direction, the back sheet 25 is disposed on the non-skin facing side of the skin side sheet 20.

  At least the absorbent core 31 and the sheet layer 33 have a central guiding portion 71. The central guiding portion 71 is recessed in the thickness direction at the center in the width direction of the absorbent core, and extends in the front-rear direction. The central guiding portion 71 may be provided at least on the absorbent core 31 and the sheet layer 33, and may also be provided on the tissue layer 32. The central guiding portion 71 may be formed by squeezing the absorbent core 31 or the like in a roll gap between a convex roller (not shown) having a plurality of projections and an anvil roller (not shown) having a flat surface. . The central guiding portion 71 may be formed by squeezing from the non-skin facing surface side.

  At least both of the absorbent core 31 may be compressed in the thickness direction, and a pair of squeezed portions 72 may be provided along the front and rear direction on both sides in the width direction of the central guiding portion 71. The pressing parts 72 are arranged at intervals in the width direction. The pressing portion 72 may be provided at least in the absorbent core 31 and may be provided also in the sheet layer 33, the tissue layer 32, the intermediate sheet 15, and the top sheet 10. The squeezed portion 72 is squeezed through an absorbent core 31 or the like in a roll gap between a convex roller (not shown) having a plurality of protrusions and an anvil roller (not shown) having a flat surface, like the central guide portion 71. It may be processed and formed.

  The absorbent article has at least a pair of a first fold line FL1 and a second fold line FL2 for folding the absorbent article such that the skin facing surfaces of the absorbent article are opposed to each other, and a plurality of such articles are used before use. It is folded through the fold line. FIG. 3 is a view for explaining a folding mode of the absorbent article 1. In addition, although the absorbent article 1 of this Embodiment is folded with the packaging sheet 70, it may be folded only by the absorbent article 1, without providing the packaging sheet 70 in a modification.

  The absorbent article 1 is disposed on the packaging sheet 70 such that the non-skin facing surface of the absorbent article 1 and the packaging sheet 70 face each other when folded. With the absorbent article 1 disposed on the packaging sheet 70, one outer edge of the absorbent article 1 and one outer edge of the packaging sheet 70 are based on the first fold line FL1 along the longitudinal direction L. It is folded back inward (see FIG. 3A). The area (area on both sides of the first fold line FL1) disposed across the first fold line FL1 in the unfolded state (the state before being folded) in which the absorbent article is unfolded is the skin facing surface in the folded state They are facing each other. In the state where the skin facing surfaces are facing each other, one skin facing surface and the other skin facing surface are facing each other, and between the one skin facing surface and the other skin facing other It is a concept that also includes the state in which members of the

  Next, the other outer edge of the absorbent article 1 and the other outer edge of the packaging sheet 70 are folded inward from the second fold line FL2 along the longitudinal direction L (see FIG. 3B). The area (area on both sides of the second fold line FL2) disposed across the second fold line FL2 in the unfolded state (the state before being folded) in which the absorbent article 1 is deployed is the skin facing in the folded state The faces are facing each other. The first fold line FL1 and the second fold line FL2 constitute a pair of fold lines of the present invention.

  Then, in the state of being folded by the first folding line FL1 and the second folding line FL2, the rear end edge of the absorbent article 1 and the rear end edge of the packaging sheet 70 form the third folding line FL3 along the width direction W It wraps around to the origin. Next, the front end edge of the absorbent article 1 and the front end edge of the packaging sheet 70 are folded inward from the fourth fold line FL4 along the width direction W (see FIG. 3C). By being folded in this manner, the absorbent article 1 has a reduced length in the width direction W and a length in the front-rear direction L, and is miniaturized. Therefore, compact portability can be realized.

  In the unfolded state in which the absorbent article 1 folded in this manner is developed, the absorbent article 1 is folded at the first fold line FL1, the second fold line FL2, the third fold line FL3, and the fourth fold line FL4. A cocoon has been formed. The fold line by the first fold line FL1 and the fold line by the second fold line FL2 become a fold away from the wearer. The first fold line FL1 and the second fold line FL2 are valley fold lines. Therefore, in the unfolded state, the area outside the first fold line FL1 and the second fold line FL2 in the width direction W is erected at the base point of the first fold line FL1 and the second fold line FL2.

  Then, based on FIG.4 and FIG.5, the absorbent article of a wearing condition is demonstrated. 4 schematically shows a state in which the absorbent article 1 is attached to the underwear S in the cross section based on the 2A-2A cross section shown in FIG. 1, and FIG. 5 is a cross section based on FIG. The deformation | transformation aspect of the absorption core 31 and the tissue layer 32 is shown typically. The center in the width direction of the absorbent article is disposed on the skin-facing surface side of the undergarment, and the wings 3 of the absorbent article are folded back on the non-skin-facing surface T2 of the undergarment S. The first folding line FL1 and the second folding line FL2 are formed outside the outer edge 15E of the intermediate sheet 15 in the width direction W. At least a part of the non-bonding region R12 may be disposed outside the first folding line FL1 and the second folding line FL2 in the width direction.

  The non-joining area R12 outside the first folding line FL1 and the second folding line FL2 in the width direction W becomes an upright portion 13 which can be erected by the wearer by the fold when worn (see FIG. 4). The upright portion 13 of the top sheet 10 can hit the body on the side of the wearer's excretory port, and the side leakage can be suppressed.

  In addition, the body fluid discharged to the absorbent article is guided toward the intermediate sheet 15 and the absorbent core 31 via the top sheet 10. At this time, the body fluid guided to the intermediate sheet 15 through the top sheet 10 diffuses in the intermediate sheet 15 and is guided to the outer edge 15 E of the intermediate sheet 15. The outer edge 15E of the intermediate sheet 15 is positioned inward in the width direction W than the first fold line FL1 and the second fold line FL2, and the body fluid hardly reaches the rising portion 13. Further, the body fluid having passed through the top sheet 10 and the intermediate sheet 15 is guided to the absorbent core 31 located on the non-skin facing surface T2 side of the skin surface side sheet 20. And if body pressure is applied to the absorption core 31 which absorbed the bodily fluid, the bodily fluid may exude to the skin opposing surface side. At this time, a space is formed between the standing portion 13 and the skin side sheet 20, so that even if the body fluid is guided from the absorbent core 31 to the skin side sheet 20, the body fluid is standing portion It is difficult to reach to 13. Thus, rewet of the body fluid through the rising portion 13 can be suppressed. Therefore, the performance which prevents a rewet can be improved, suppressing a side leak.

  In addition, in order to secure the erectability of the upright portion 13, it is preferable that the joining portion 14 not be disposed in the area outside the first folding line FL1 and the second folding line FL2 in the width direction W, The portion 14 may be located only inward in the width direction W than the first fold line FL1 and the second fold line FL2. When the joint portion 14 is positioned only inside the first fold line FL1 and the second fold line FL2 in the width direction, the range in the width direction of the rising portion 13 is the first fold line FL1 and the fold line RL. And between the second fold line FL2 and the folding line RL. Further, in the embodiment in which the bonding portion 14 is positioned outside the first folding line FL1 and the second folding line FL2 in the width direction, the range in the width direction of the rising portion 13 corresponds to the bonding portion 14 and the folding line RL. It will be between.

  The central guiding portion 71 is recessed in the thickness direction T. The body fluid guided to the absorbent core 31 through the top sheet 10 is drawn to the absorbent core 31 by the central guiding portion 71 and is guided to the sheet layer 33 disposed on the non-skin facing surface T2 more than the absorbent core 31. . By drawing the discharged body fluid into the non-skin facing surface T2, rewet of the body fluid can be suppressed. Further, according to the central guiding portion 71 in which the absorbent core 31 is compressed in the thickness direction, the body fluid is more easily drawn in and easily diffused in the front-rear direction L because the density thereof is high. By drawing in and spreading the body fluid by the central guiding part 71, rewet of the body fluid can be further suppressed.

  As shown in FIG. 5, when the absorbent article is worn, the absorbent core 31 has a shape that is convex on the skin side from the side portion in the width direction W toward the central portion when the pinching force of the leg of the wearer acts. Transform into Specifically, the central guiding portion 71 can guide the absorbent core 31 so as to bend to the skin facing surface side T1 in the thickness direction T, with the central guiding portion 71 as a base point, and the pressing portion 72 is a pressing portion The absorbent core 31 can be guided so as to bend toward the non-skin facing surface side in the thickness direction T from the point 72 as a base point. Therefore, the shape which the center guidance part 71 stands | starts up to a wearer side is realizable on the basis of the pressing part 72 located in the both sides of the width direction W. FIG. By deforming the absorbent core 31 in a convex shape toward the wearer, the central guiding portion 71 and the excretory port can be disposed close to each other, and the body fluid from the excretory port can be easily drawn in via the central guiding portion 71. In addition, even when the body fluid is diffused on the skin facing surface side of the absorbent core 31 or when the body fluid is diffused in the absorbent core, the pressing portion 72 positioned outside the central guiding portion 71 in the width direction W Body fluid can be introduced in the direction L, and lateral leakage of body fluid can be suppressed.

  The outer edge 31E of the absorbent core 31 may be located inward in the width direction W than the first fold line FL1 and the second fold line FL2. Therefore, when the absorbent article is folded by the first fold line FL1 and the second fold line FL2, the absorbent core 31 is not folded. Compared with the configuration in which the absorbent core and the top sheet are both folded, the pressure at the time of folding is small, and the curing of the top sheet can be suppressed. Therefore, it is possible to soften the contact of the standing portion against the skin. In addition, compared to a configuration in which the absorbent core and the top sheet are both folded, the absorbent core is difficult to follow the absorbent core due to folding when worn, and tends to stand up with respect to the absorbent core. The uprightness of the upright portion 13 can be maintained, and the performance of preventing rewet while suppressing lateral leakage can be improved.

  The first fold line FL1 and the second fold line FL2 may be formed in the tissue layer 32. That is, the outer edge of the tissue layer 32 may be located outside the first folding line FL1 and the second folding line FL2 in the width direction W. When the tissue layer 32 is folded along the first fold line FL1 and the second fold line FL2, the gaps between the fibers expand when it is folded. Therefore, the density of the portion where the first folding line FL1 and the second folding line FL2 are formed is lower than the density of the portion where the first folding line FL1 and the second folding line FL2 are not formed. The density of the tissue layer is in the order of high, low, high from the center in the width direction of the absorbent article to the side. Therefore, when the body fluid diffuses in the tissue layer, even if the body fluid reaches the portion where the first fold line FL1 and the second fold line FL2 are formed (the portion with low density), the lateral fold line is further It is difficult for the body fluid to diffuse to the non-formed part (high density part). It is difficult for the body fluid to diffuse to the region overlapping the rising portion 13, and rewet via the rising portion 13 can be suppressed.

  The sheet layer 33 may extend outside the tissue layer 32 in the width direction W. Since the sheet layer is longer in the width direction than the tissue layer and the sheet layer is easier to draw the fluid into the space between the fibers than the tissue layer, the body fluid is diffused on the side further away from the body, Rewet on the side facing the skin can be suppressed. For example, when the absorbent core 31 does not have SAP or the amount of SAP is small, there is a tendency that there is a body fluid that can not be held by the SAP, and the sheet layer 33 diffuses the body fluid away from the body. The rewet to the skin opposing surface side can be effectively suppressed.

  As shown in FIG. 1, the absorbent article 1 may be formed with an embossed portion 60 for bonding the top sheet 10 and the intermediate sheet 15. The embossed portion 60 may be formed only in the area where the intermediate sheet 15 is disposed in plan view. In the present embodiment, the intermediate sheet 15 is disposed with the same width over the entire area in the front-rear direction L of the absorbent article 1, and the embossed portion 60 is disposed outside the intermediate sheet 15 in the width direction W. Not. The embossed portion 60 is recessed in the thickness direction T, and can diffuse the body fluid in the planar direction. At this time, since the embossed portion is formed only in the region in which the intermediate sheet is disposed, the body fluid is less likely to diffuse to the outside in the width direction than the intermediate sheet, and is less likely to diffuse to the rising portion of the top sheet. Therefore, the performance which prevents rewet while suppressing side leakage can be improved.

  As shown in FIG. 1, in plan view of the absorbent article, the embossed portion 60 has a line embossed portion 61 extending linearly and disposed in a lattice shape, and a point embossed portion 62 in the form of a dot. You may The line embossing parts 61 may be spaced apart in the direction in which the line embossing parts 61 extend. The line embossing portion 61 has a first direction D1 inclined with respect to the longitudinal direction L and the width direction W, and a second direction D2 intersecting with the first direction D1 and inclined with the longitudinal direction L and the width direction W Extends to The line embossing parts 61 may be spaced apart in the first direction D1 and spaced apart in the second direction D2. The line embossed portion 61 extending in the first direction D1 and the line embossed portion 61 extending in the second direction D2 form a lattice shape having a plurality of rhombus shapes. The point embossing portions 62 are disposed at the corner portions of the grid shape between the line embossing portions 61. The width of the point embossing portion 62 may be longer than the width of the line embossing portion 61.

  The body fluid diffused through the line embossing portion 61 reaches the point embossing 62 part. The point embossing parts 62 are located at the corners of the lattice shape, and the body fluid gathers via the plurality of line embossing parts 61. The embossed portion 60 is recessed in the thickness direction T, the distance to the absorbent core 31 is short, and the body fluid can be easily introduced to the absorbent core 31. Since the width of the point embossing portion 62 is longer than the width of the line embossing portion 61, the collected body fluid can be more easily introduced to the absorbent core 31. By directing the body fluid away from the body, rewet can be further suppressed.

  It may have an adhesive for bonding the top sheet 10 and the intermediate sheet 15. That is, the top sheet 10 and the intermediate sheet 15 are bonded by the embossed portion 60 and the adhesive. By providing the emboss part 60 and the adhesive together, the area of the emboss part 60 can be reduced, and the decrease in touch of the surface of the top sheet 10 facing the skin due to the emboss part 60 can be suppressed.

  Further, the adhesive forms a predetermined pattern in plan view, and the predetermined pattern may have an omega pattern, a wave pattern or a spiral pattern. An area in which the adhesive is disposed and an area in which the adhesive is not disposed can be provided, and in the area in which the adhesive is not disposed, the drawability of the body fluid can be ensured.

  Although the present invention has been described above in detail using the above embodiments, it is obvious for those skilled in the art that the present invention is not limited to the embodiments described herein. The present invention can be embodied as modifications and alterations without departing from the spirit and scope of the present invention defined by the description of the claims. Accordingly, the description in the present specification is for the purpose of illustration and does not have any limiting meaning on the present invention.

DESCRIPTION OF SYMBOLS 1 Absorbent article 10 Top sheet 11 Folded part 12 Non-folded part 13 Standing part 14 Bonding part 15 Intermediate sheet 20 Skin side sheet 31 Absorbent core 32 Tissue layer 33 Sheet layer 60 Embossed part 61 Line embossed part 62 Point embossed part 71 Center Induction part 72 Compression part FL1 1st folding line (folding line)
FL2 second fold line (fold line)
R11 junction region R12 non junction region RL turn back line L front and back direction W width direction T thickness direction T1 skin facing surface side T2 non skin facing surface side

Claims (9)

Longitudinal direction and width direction orthogonal to each other;
With the top sheet,
An intermediate sheet disposed closer to the non-skin facing side than the top sheet ;
An absorbent core disposed in the non-skin-facing surface than before Symbol intermediate sheet,
A skin side sheet disposed on the non-skin facing side with respect to the top sheet and disposed on the skin facing side with respect to the absorbent core ,
An absorbent article, wherein a pair of folding lines for folding the absorbent article are formed along the front-rear direction such that the skin-facing surfaces of the absorbent article face each other,
The top sheet has a folded-back portion that is folded back to the non-skin facing surface side on the outer side in the width direction than the intermediate sheet,
A bonded area in which the folded portion is bonded to the skin side sheet, and a non-bonded area in which the folded portion is not bonded to the skin side sheet outside the width direction with respect to the bonded area Provided,
At least a part of the non-joining region is disposed outside the width line with respect to the folding line,
The absorbent article, wherein the fold line is formed on the outer side in the width direction than the outer edge of the intermediate sheet. Longitudinal direction and width direction orthogonal to each other;
With the top sheet ,
An absorbent core disposed in the non-skin-facing surface than before Symbol topsheet,
A skin side sheet disposed on the non-skin facing side with respect to the top sheet and disposed on the skin facing side with respect to the absorbent core ,
An absorbent article, wherein a pair of folding lines for folding the absorbent article are formed along the front-rear direction such that the skin-facing surfaces of the absorbent article face each other,
It has a sheet layer that covers the non-skin facing surface side of the absorbent core,
At least the absorbent core and the sheet layer are recessed in the thickness direction at the center in the width direction of the absorbent core, and have a central guiding portion along the front-rear direction,
The top sheet has a folded portion that is folded back to the non-skin facing surface side on the outer side in the width direction,
A bonded area in which the folded portion is bonded to the skin side sheet, and a non-bonded area in which the folded portion is not bonded to the skin side sheet outside the width direction with respect to the bonded area Provided,
At least a part of the non-joining region is disposed outside the width line with respect to the folding line,
The absorbent article, wherein the fold line is formed in the non-bonding area.   The absorbent article according to claim 2, wherein at least both of the absorbent core is compressed in the thickness direction, and a pair of squeezed portions along the front-rear direction is provided on both sides in the width direction of the central guiding portion. .   The absorbent article according to any one of claims 1 to 3, wherein the outer edge of the absorbent core is located inward in the width direction than the folding line. It has a tissue layer that covers the surface of the absorbent core facing the skin side,
The absorbent article according to any one of claims 1 to 4, wherein the fold line is formed in the tissue layer. It has a sheet layer that covers the non-skin facing surface side of the absorbent core,
The absorbent article according to claim 5, wherein the sheet layer extends outward in the width direction more than the tissue layer. An embossed portion is formed to join the top sheet and the intermediate sheet,
The absorbent article according to claim 1, wherein the embossed portion is formed only in the area where the intermediate sheet is disposed. In a plan view of the absorbent article, the embossed portion has a line embossed portion extending linearly and disposed in a lattice shape, and a point embossed portion having a dot shape,
The line embossing parts are spaced apart in the direction in which the line embossing parts extend,
The point embossing portions are disposed at the corners of the grid shape between the line embossing portions,
The absorbent article according to claim 7, wherein a width of the point embossed portion is longer than a width of the line embossed portion. It has an adhesive for bonding the top sheet and the intermediate sheet,
The absorbent article according to claim 7 or 8, wherein the adhesive forms a predetermined pattern in plan view, and the predetermined pattern has an omega pattern, a wave pattern or a spiral pattern.

Images