JP6377523B2 - Absorbent articles - Google Patents

Description

  The present invention relates to absorbent articles such as panty liners, incontinence pads and sanitary napkins.

  Absorbent articles such as pantiliners, incontinence pads and sanitary napkins are known. Patent document 1 is disclosing the absorbent article which has a liquid-permeable surface sheet, a liquid-impermeable back sheet, and an absorber arrange | positioned between a surface sheet and a back sheet. Phosphate-type vitamin C is applied to the skin contact surface side of the top sheet and on both side edges along the longitudinal direction of the absorbent article. Moreover, patent document 1 is disclosing the leak-proof wall provided in the both-sides edge along the longitudinal direction of an absorbent article.

  Patent document 2 is disclosing the absorbent article which has the surface sheet which consists of a nonwoven fabric, a back surface sheet, and the absorber arrange | positioned between the surface sheet and the back surface sheet. In the absorbent article described in Patent Document 2, the top sheet has a number of protrusions that protrude toward the wearer's skin. These protrusions have an internal space opened to the absorber side. The skin care agent is adhered to both the skin facing surface and the non-skin facing surface at the top of the protruding portion. The amount of the skin care agent per unit area is greater on the skin facing surface than on the non-skin facing surface of the topsheet.

JP 2012-10968 A JP 2012-143543 A

  The inventor of the present application has discovered the following problems. In the absorbent article described in Patent Document 1, the concentration of phosphate ester-type vitamin C applied to the absorbent article decreases with time, and the effect of phosphate ester-type vitamin C may decrease with time.

Patent Document 2 describes that the amount of the skin care agent on the skin facing surface of the top sheet is made larger than the amount of the skin care agent on the non-skin facing surface of the top sheet. However, Patent Document 2 does not consider maintaining a skin care agent for a long time, and further does not consider where the skin care agent should be held in the absorbent article in a plan view.
This invention is made | formed in view of the above-mentioned subject, and it aims at providing the absorbent article by which the skin care effect is maintained for a long time in an effective position.

  The absorbent article which concerns on this indication has a skin surface side sheet | seat orient | assigned to a wearer's skin surface side. The skin surface side sheet has a cuff having a free end portion that extends in the longitudinal direction of the absorbent article at the side portion in the width direction of the absorbent article and can stand on the skin surface side of the wearer. A skin care agent is provided on at least a part of the cuff. The cuff has a high density portion having a density higher than that of other portions of the cuff in the region where the skin care agent is provided.

  ADVANTAGE OF THE INVENTION According to this invention, the absorbent article by which a skin care effect is maintained for a long time in an effective position can be provided.

Drawing 1 is a top view seen from the skin side of an absorptive article concerning one embodiment. Drawing 2 is a top view seen from the non-skin surface side of an absorptive article concerning one embodiment. 3 is a cross-sectional view of a part of the absorbent article taken along line 3A-3A in FIG. FIG. 4 is a schematic diagram showing the folding position of the absorbent article.

  Hereinafter, an absorbent article according to an embodiment will be described with reference to the drawings. The absorbent article of the present invention may be an arbitrary absorbent article such as a panty liner (clay sheet), a sanitary napkin, or an incontinence pad. In the following embodiments, a disposable sanitary napkin will be described as an example of an 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 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.

(1) Structure of absorbent article FIG. 1: is the top view seen from the skin surface side of the absorbent article which concerns on one Embodiment. Drawing 2 is a top view seen from the non-skin surface side of an absorptive article concerning one embodiment. FIG. 3 is a cross-sectional view of the absorbent article taken along line 3A-3A in FIG. The absorbent article 1 has a longitudinal direction L extending between the front side and the rear side of the wearer and a width direction W orthogonal to the longitudinal direction L. The absorbent article 1 may have the wing part 48 located in the both outer sides of the width direction W of the crotch area | region containing the area | region where a wearer's excretion opening opposes.

  The absorbent article 1 includes skin-side sheets 10 and 41 directed to the skin side of the wearer, a non-skin-side sheet 20 directed to the opposite side of the wearer's skin, and the skin-side sheet 10 and 41, the absorber 30 provided on the non-skin surface side.

  The absorber 30 may have an absorption core (not shown) and a covering sheet (not shown) that wraps the absorption core. The absorbent core may be formed from, for example, hydrophilic fibers or polymeric water-absorbing polymers, or combinations thereof. The covering sheet may be formed from, for example, a nonwoven fabric or a tissue.

  The non-skin surface side sheet may include a liquid-impermeable back sheet 20 that does not transmit liquid such as body fluid. The back sheet 20 covers at least the non-skin facing surface side of the absorber 30. The back sheet 20 may be formed from, for example, a non-breathable or breathable film or a non-woven fabric.

  The skin surface side sheet covers at least the surface sheet 10 covering the skin facing surface of the absorbent body 30 and the side portion of the surface sheet 10 and extends from the side portion of the surface sheet 10 to the outside in the width direction W of the absorbent article 1. And a side sheet 41 to be taken out. The top sheet 10 may be formed of a liquid-permeable sheet that transmits liquid such as body fluid, for example, a nonwoven fabric. In addition, the pressing parts 70 and 72 compressed by the embossing in the thickness direction may be formed in the surface sheet 10 and the absorber 30.

  The side sheet 41 may be formed from a nonwoven fabric, for example. The side sheet 41 may overlap at least partially with the top sheet 10 in plan view, and may extend outward in the width direction W from the absorber 30 and the top sheet 10.

  A part of the side sheet 41 forms a cuff 40 that extends in the longitudinal direction L of the absorbent article at the side in the width direction W of the absorbent article 1. The cuff 40 has a free end portion 42 that can stand up toward the wearer's skin surface, and a fixing portion 45 that is adjacent to the free end portion 42 and does not stand up. In the present embodiment, the cuff 40 is formed by the inner edge portion of the side seat 41 in the width direction W. Specifically, the front end on the inner edge side in the width direction W of the side seat 41 is a free end portion 42 that can stand up. A non-standing portion adjacent to the free end portion 42 forms a fixed portion 45. The fixing portion 45 may be bonded to a member positioned on the non-skin surface side of the side sheet 41 via an adhesive 44, for example, a hot melt adhesive. In the example shown in FIG. 3, the fixing portion 45 of the cuff 40 is bonded to the topsheet 10 via an adhesive 44. Preferably, at least at the boundary position between the side sheet 41 and the top sheet 10, the density of the side sheet 41 is greater than the density of the top sheet 10.

  In the example shown in FIG. 3, the fixing portion 45 of the cuff 40 is bonded to the surface sheet 10 via the adhesive 44, but instead, the fixing portion 45 of the cuff 40 is bonded to the absorber 30 via the adhesive 44. It may be adhered to.

  Further, the free end portion 42 of the side sheet 41 may be folded back into a plurality of layers. In this case, an elastic member extending in the longitudinal direction L of the absorbent article 1 may be provided on the free end portion 42 of the side sheet 41.

  A skin care agent 60 is provided on at least a part of the cuff 40. A region where the skin care agent 60 is provided (a region between two dotted lines extending along the longitudinal direction L in FIG. 1) may extend along the longitudinal direction L of the absorbent article 1. In addition, although the skin care agent 60 is provided in the skin surface side of the absorbent article 1, the area | region in which the skin care agent 60 was provided in FIG. 2 was shown for convenience.

  In the present embodiment, the region where the skin care agent 60 is provided extends from one end to the other end in the longitudinal direction L of the absorbent article 1. Instead, the region where the skin care agent 60 is provided may partially extend in the longitudinal direction L of the absorbent article 1.

  The cuff 40 has a high-density portion 43 having a higher density than the density of other portions of the cuff 40 in the region where the skin care agent 60 is provided. A plurality of high-density portions 43 may be formed along the longitudinal direction L of the absorbent article 1 at intervals. The high density portion 43 may be formed by at least embossing formed on the cuff 40. However, the high-density portion 43 is not limited to embossing, and may be any portion formed as long as it can hold a liquid by capillary action. Preferably, the high density portion 43 is formed in the fixing portion 45 of the cuff 40.

The density of the high density portion 43 may be in the range of 0.1 to 1.0 g / cm ³ . Further, the density of the cuff 40 around the high-density portion 43 may be in the range of 0.02 to 0.9 g / cm ³ . The difference between the density of the cuff 40 around the high density portion 43 and the density of the high density portion 43 is preferably 0.02 g / cm ³ or more. Moreover, it is preferable that the area of the high-density part 43 is 5 to 50% of the area of the area | region where the skin care agent was apply | coated, and it is more preferable that it is 10 to 40%.

  Preferably, in the region where the skin care agent 60 is provided, a liquid-impermeable substance is provided on the non-skin surface side of the cuff 40. The liquid-impermeable substance may be formed of any material as long as it can suppress the movement of the skin care agent 60 to the non-skin surface side. In the present embodiment, the liquid-impermeable substance is composed of the adhesive 44 described above, for example, a hot-melt adhesive. Preferably, the high-density portion 43 of the cuff is disposed so as to overlap an adhesive region where the adhesive 44 is provided in plan view. The cuff 40 and the top sheet 10 may be firmly joined to each other via the adhesive 44 and the embossing as the high density portion 43. If there is no need for adhesion, the liquid-impermeable substance is not limited to an adhesive.

  The absorbent article 1 may have the pressing part 80 formed in the edge part of the longitudinal direction L. FIG. The pressing part 80 is formed by embossing. A part of the area where the pressing part 80 is formed overlaps with a part of the area where the high-density part 43 of the cuff 40 is formed. In this case, it is preferable that at least a part of the skin care agent 60 is provided in an overlapping region 90 between the region where the high-density portion 43 of the cuff 40 is formed and the region where the compressed portion 80 is formed.

  The back surface sheet 20 may be formed with adhesive regions 51 and 52 that are adhered to one surface of the underwear. The adhesive region includes a main body adhesive region 51 provided on the non-skin facing surface in the region where the absorber 30 is disposed, and a wing adhesive region 52 provided on the non-skin facing surface of the wing portion 48.

  In the present embodiment, three main body adhesive regions 51 are provided, and each main body adhesive region 51 extends in the longitudinal direction L. Not only this but main body adhesion field 51 may have arbitrary shape and number. The wing adhesive region 52 is provided on the non-skin surface side of the wing portion 48.

  The adhesive regions 51 and 52 can be formed from, for example, a hot-melt adhesive material such as a synthetic rubber or olefin. In addition, in the state before use of the absorbent article 1, the adhesive regions 51 and 52 are in contact with a release sheet (not shown) or a packaging sheet for packaging the absorbent article 1. The release sheet or the packaging sheet prevents the adhesive from deteriorating before use. And a peeling sheet or a packaging sheet is peeled by a wearer at the time of use.

  Preferably, the skin care agent 60 is disposed so as not to overlap the adhesive regions 51 and 52 in plan view. More preferably, the skin care agent 60 is located further outside than the outermost side of the main body adhesive region 51 with respect to the width direction W of the absorbent article 1.

  FIG. 4 shows the positional relationship between the fold lines F1 to F4 when the absorbent article 1 is folded and the area where the skin care agent 60 is applied. FIG. 4 shows a plane viewed from the skin surface side of the absorbent article 1, and the squeezed portions 70 and 72 are not shown for convenience.

  The absorbent article 1 is generally folded when accommodated in a packaging bag. The absorbent article 1 has wing fold lines F3 and F4 for folding the wing portion 48. Wing fold lines F3 and F4 may be located outside the region in which the skin care agent 60 is applied in the width direction W of the absorbent article 1 in a state where the absorbent article 1 is deployed. The wing part 48 is folded to the skin surface side sheet side from the wing fold lines F3 and F4. Thereby, a part of area | region in which the skin care agent 60 was provided will be in the state covered with the wing part 48 (refer FIG. 4).

  Further, the absorbent article 1 is folded in three along fold lines F1 and F2 along the width direction W. The fold lines F1 and F2 intersect the region where the skin care agent 60 is provided on the side portion in the width direction W of the absorbent article 1.

  The skin care agent 60 may be an agent containing vitamin E or a vitamin E derivative. Skin care agent 60 is not limited to this example, and may contain any agent intended for skin care. Preferably, the skin care agent 60 is made of a hydrophobic material.

(2) Manufacturing method of absorbent article Next, an example of the manufacturing method of the absorbent article which concerns on the said embodiment is demonstrated. The absorbent article 1 is manufactured by forming a continuous body in which a plurality of absorbent articles 1 are continuously connected in the longitudinal direction L, and then cutting the continuous body into the respective absorbent articles 1.

  First, the absorbent body 30 is disposed between the top sheet 10 and the back sheet 20 while pulling out the webs constituting the top sheet 10, the side sheet 41, and the back sheet 20 from the original fabric. A plurality of absorbers 30 are arranged at intervals in the web conveyance direction. Furthermore, the web which comprises each of the surface sheet 10, the side sheet | seat 41, and the back surface sheet 20 is mutually joined, and the continuous body in which the some absorbent article 1 was continuously connected in the longitudinal direction L is formed. In addition, it is preferable that the absorbent article 1 is formed so that the longitudinal direction L of the absorbent article 1 may be along the conveyance direction of the continuous body.

  The web constituting the top sheet 10 and the web constituting the side sheet 41 are preferably joined by, for example, an adhesive 44. A cuff 40 having a free end 42 that can stand on the skin surface side of the wearer is formed in a portion of the side sheet 41 corresponding to the inner edge of the absorbent article in the width direction W. The adhesive 44 may be formed on the fixing portion 45 of the cuff 40 along the longitudinal direction L of the absorbent article 1. When the top sheet 10 and the side sheet 41 are bonded to each other, the high density portion 43 can be formed in the cuff 40 by embossing the fixing portion 45 of the cuff 40.

  As needed, you may form the pressing parts 70 and 72 in a continuous body by embossing. The pressing parts 70 and 72 are formed by compressing at least the web and the absorbent body 30 constituting the top sheet 10 in the thickness direction.

  Moreover, the pressing part 80 is formed in the position corresponded to the edge part of the longitudinal direction L of the absorbent article 1. FIG. This pressing part 80 is formed by pressing the web which comprises the surface sheet 10, the side sheet 41, and the back surface sheet 20 in the thickness direction.

  Next, the continuous body is cut into each absorbent article 1 by cutting the continuous body. At this time, the continuous body is cut according to the shape of the absorbent article 1.

  Next, a skin care agent is applied to at least a part of the cuff 40 of the absorbent article 1. The skin care agent 60 can be applied to the absorbent article 1 while transporting the cut absorbent article 1. The application of the skin care agent 60 can be performed using, for example, a spray, but is not limited thereto. While the absorbent article 1 is being transported along the longitudinal direction L of the absorbent article 1 in a state where the position of the application means is fixed with respect to the transport means for transporting the absorbent article 1, the absorbent article 1 of the absorbent article 1 is conveyed by the coating means. The skin care agent 60 may be applied to the cuff 40. Thereby, the skin care agent 60 can be formed along the longitudinal direction L of the absorbent article 1.

  The skin care agent 60 may be applied before the continuous body is cut into the respective absorbent articles 1. Even in this case, the skin care agent 60 is formed along the longitudinal direction L of the absorbent article 1 by applying the skin care agent 60 to a position corresponding to the cuff 40 of the absorbent article 1 while conveying the continuous body. can do.

(3) Effects In the absorbent article 1 according to the above-described embodiment, the cuff 40 has the free end portion 42 that can stand on the wearer's skin surface side, and thus easily rubs against the wearer's skin. In particular, since the cuff 40 is located on the side portion of the absorbent article 1 in the width direction W, it contacts the wearer's groin. Therefore, the cuff 40 is easily rubbed with the inguinal portion as the wearer walks, and in particular, the cuff 40 is likely to irritate the wearer's skin. In the present embodiment, the skin care agent 60 concentrates on the high density portion 43 of the cuff 40 due to capillary action. Thereby, the skin care agent 60 can be held in the high density portion 43 of the cuff 40 for a long time. As a result, the skin care effect can be maintained for a long time at a position where the skin of the wearer is easily stimulated, that is, at the cuff 40.

  According to one embodiment, the absorbent article 1 has the liquid-impermeable substance 44 provided on the non-skin surface side of the cuff 40 in the region where the skin care agent 60 is provided. The liquid impervious substance 44 prevents the skin care agent 60 provided on the cuff 40 from penetrating into a substance provided on the non-skin surface side of the cuff 40, such as the topsheet 10. Thereby, since the skin care agent 60 is held in the cuff 40 for a long time, the skin care effect is maintained for a long time.

  According to one embodiment, the liquid impermeable material 44 is an adhesive. Further, the cuff is bonded to another member provided on the non-skin surface side of the cuff 40 via an adhesive. Furthermore, the high-density portion 43 is disposed so as to overlap an adhesive region where an adhesive is provided in plan view. The adhesive can prevent the skin care agent 60 from moving from the high-density portion 43 to another member such as the topsheet 10 or the absorbent body 30. Thereby, the skin care agent 60 can be hold | maintained to the high density part 43 for a long time, and the skin care effect can be maintained for a long time.

  According to one embodiment, the high density portion 43 is formed by at least an emboss formed on the cuff 40. Since the density of the portion where the emboss is formed is higher than the density of the surrounding portion, the skin care agent 60 can be held in the portion where the emboss is formed by capillary action. Thereby, the skin care agent 60 is hold | maintained for a long time by the embossing formed in the cuff 40, and the skin care effect is maintained for a long time.

  In addition, when the emboss is formed in an adhesive region where the cuff 40 is bonded to another member, the cuff that easily rubs against the skin is attached to another member such as the topsheet 10 or the absorbent body 30 by the emboss and the adhesive. It can be firmly fixed.

  According to one embodiment, the absorbent article 1 is formed on the non-skin side sheet 20 and the non-skin side sheet 20 that are directed to the opposite side of the wearer's skin surface. Adhesive regions 51 and 52 to be adhered to each other. Moreover, the skin care agent 60 is arrange | positioned so that it may not overlap with the adhesion area | regions 51 and 52 by planar view. The non-skin side sheet 20 contacts the wearer's underwear. The adhesive regions 51 and 52 formed on the non-skin side sheet 20 are in close contact with the underwear and prevent the absorbent article from shifting. Therefore, the absorbent article 1 is easy to adhere to the underwear in the adhesive regions 51 and 52. On the other hand, the portion of the absorbent article 1 that does not overlap with the adhesive regions 51 and 52 in a plan view is not in close contact with the underwear, and easily moves with respect to the underwear as the wearer walks, and thus easily rubs against the wearer's skin. As described above, the skin care agent 60 is applied to the portion that is easily rubbed with the skin, so that the skin care effect can be appropriately given to the wearer.

  According to one embodiment, the absorbent article 1 has the absorbent body 30 provided on the non-skin surface side of the skin surface side sheet. The skin surface side sheet includes a surface sheet 10 that covers the absorber 30 and a side sheet 41 that at least partially overlaps the surface sheet 10 in a plan view and forms at least a cuff 40. Further, at least at the boundary position between the side sheet 41 and the top sheet 10, the density of the side sheet 41 is larger than the density of the top sheet 10. A part of the skin care agent 60 provided on the cuff 40 of the side sheet 41 may diffuse toward the top sheet 10 adjacent to the side sheet 41. However, since the density of the side sheet 41 is larger than the density of the top sheet 10 at least at the boundary position between the side sheet 41 and the top sheet 10, the skin care agent 60 is difficult to move from the side sheet 41 to the top sheet 10. Thereby, diffusion of the skin care agent 60 can be suppressed and the skin care agent 60 can be held in the region of the side sheet 41.

  According to one embodiment, the absorbent article 1 has the pressing part 80 formed in the edge part of the longitudinal direction L of an absorbent article. Further, at least a part of the skin care agent 60 is provided in an overlapping region 90 between the region where the high density portion 43 is formed and the region where the pressing portion 80 is formed. The end in the longitudinal direction L of the absorbent article of the cuff 40 having the free end 42 that can stand up to the wearer's skin surface side is the portion most easily rubbed against the wearer's skin. This is the part where irritation increases. In such a portion, an overlapping region 90 is disposed between the region where the high density portion 43 is formed and the region where the pressing portion 80 is formed. Since the overlapping region 90 has a higher density portion due to the high-density portion 43 and the compressed portion 80, the skin care agent 60 can be more easily held. Thereby, the skin care effect can be appropriately maintained at a portion where the wearer's skin is highly stimulated.

  According to one embodiment, the skin care agent 60 is made of a hydrophobic material. Depending on the wearer, after the skin is washed with water, the absorbent article 1 may be worn while the skin is wet or moist. When the skin care agent 60 is made of a hydrophilic material, if the absorbent article 1 is worn with the skin wet or wet, the skin care agent 60 may flow down. In the present embodiment, since the skin care agent 60 is made of a hydrophobic material, the skin care agent 60 is maintained in the absorbent article 1 even when the skin is wet or moist. Therefore, the skin care effect can be maintained for a long time.

  Although the present invention has been described in detail using the above-described embodiments, it will be apparent to those skilled in the art that the present invention is not limited to the embodiments described herein. 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.

1 Absorbent article 10 Top sheet (skin side sheet)
20 Back sheet (non-skin side sheet)
30 Absorbent body 40 Cuff 41 Side sheet (Skin side sheet)
42 Free end 43 Emboss (high density part)
44 Adhesive (liquid impermeable substance)
45 fixing part 48 wing part 51 central adhesive area 52 wing adhesive area 60 skin care agent 80 pressing part 90 overlapping area L longitudinal direction W width direction

Claims (7)

An absorbent article having a skin side sheet directed to the skin side of the wearer,
The skin surface side sheet has a cuff having a free end portion that extends in the longitudinal direction of the absorbent article at a side portion in the width direction of the absorbent article and can stand on the skin surface side of the wearer,
A skin care agent is provided on at least a part of the cuff,
The cuff is in the skin care agent is provided area, it has a high density part having a higher density than the density of the other portions of the cuff,
A non-skin-side sheet that is directed to the opposite side of the wearer's skin, and an adhesive region that is formed on the non-skin-side sheet and is adhered to one surface of the underwear,
The said skin care agent is an absorbent article arrange | positioned so that it may not overlap with the said adhesion area | region by planar view .   The absorbent article according to claim 1, further comprising a liquid-impermeable substance provided on the non-skin surface side of the cuff in a region where the skin care agent is provided. The liquid-impermeable material is an adhesive;
The cuff is bonded to another member provided on the non-skin surface side of the cuff via the adhesive,
The absorbent article according to claim 2, wherein the high-density portion is disposed so as to overlap an adhesive region where the adhesive is provided in a plan view.   The absorbent article according to any one of claims 1 to 3, wherein the high-density portion is formed by at least embossing formed on the cuff. It further has an absorber provided on the non-skin side of the skin side sheet,
The skin surface side sheet includes a surface sheet that covers the absorber, and a side sheet that at least partially overlaps the surface sheet in plan view and forms at least the cuff,
The absorbent article according to any one of claims 1 to 4 , wherein a density of the side sheet is greater than a density of the top sheet at least at a boundary position between the side sheet and the top sheet. It further has a pressing part formed at the end in the longitudinal direction of the absorbent article,
At least a portion of the skin care agent, wherein the compressed portion and the high density portion is formed region is provided in the overlap region of the formed regions, according to any one of claims 1 5 Absorbent article. The absorbent article according to any one of claims 1 to 6 , wherein the skin care agent is made of a hydrophobic material.

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