JP6339471B2 - Absorbent articles - Google Patents

Description

  The present invention relates to an absorbent article having an absorbent layer that absorbs body fluids.

  Conventionally, an absorbent article containing an antibacterial agent is known. For example, Patent Literature 1 to Patent Literature 4 disclose an absorbent article including an absorption layer containing an antibacterial agent. For example, in the absorbent article of Patent Document 1, an antibacterial agent is mixed in a binder that binds pulp and a superabsorbent polymer. A quaternary ammonium salt is exemplified as the antibacterial agent. The antibacterial agent exerts an antibacterial function in the body fluid absorbed by the absorber.

International Publication No. 2007/139154 JP-A-2005-198701 Japanese Patent Laid-Open No. 9-10296 JP-A-4-2345

  In general, a wearer often wears a fixed time after absorbing body fluid once by an absorbent layer. At this time, body pressure or the like is applied to the absorbent article, and the body fluid once absorbed by the absorbent layer may return to the surface sheet side.

  The antibacterial agent of the absorbent article of patent document 1 to patent document 4 is contained in the absorption layer, and exhibits an antibacterial function with respect to the body fluid absorbed in the absorption layer. However, when the body fluid once absorbed in the absorbent layer leaks out of the absorbent layer, the absorbent articles of Patent Literature 1 to Patent Literature 4 hardly exhibit an antibacterial function against the leaked body fluid.

  The present invention has been made in view of the above-described problems, and an object thereof is to provide an absorbent article that can exhibit an antibacterial function not only at the time of absorption when absorbing bodily fluids but also after absorbing bodily fluids. And

  The absorbent article (absorbent article 1) according to the present disclosure is disposed between a top sheet (top sheet 10), a back sheet (back sheet 20), and the top sheet and back sheet, and absorbs body fluid. An absorbent article including an absorbent material (absorbing layer 31), and a function including an antibacterial agent and a fragrance of a quaternary ammonium salt between the absorbent layer and the top sheet A functional material region (functional material region 50) in which a functional material is disposed is provided, and the functional material region and an adjacent layer adjacent to the functional material region in the thickness direction are compressed in the thickness direction. The gist is that a part (pressed part 80) is formed.

It is a top view of an absorptive article concerning an embodiment. It is a schematic cross section of the AA cross section shown in FIG. It is the figure which showed arrangement | positioning of the fragrance | flavor layer and adhesive agent which concern on embodiment. It is a top view of an absorptive article concerning a modification.

(1) Structure of absorbent article With reference to FIG.1 and FIG.2, the absorbent article 1 which concerns on embodiment is demonstrated. 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.

  FIG. 1 is a plan view of the absorbent article according to the embodiment. 2 is a cross-sectional view taken along line AA in FIG. As the absorbent article 1, an arbitrary absorbent article such as a panty liner (orimono sheet), a sanitary napkin or an incontinence pad is assumed. In the present embodiment, a case where a sanitary napkin is used as the absorbent article 1 will be described.

  The absorbent article 1 includes a top sheet 10, a back sheet 20, an absorbent layer 31, a side sheet 15, a covering sheet 32, and a functional material region 50. The absorbent article 1 has a longitudinal direction L extending in the front side and the rear side of the wearer, a width direction W orthogonal to the longitudinal direction L, and a thickness direction T. The thickness direction T has a skin facing surface side T1 and a non-skin facing surface side T2 which is the opposite side.

  The top sheet 10 is a liquid-permeable sheet that transmits liquid such as body fluid. The top sheet 10 is disposed on the skin facing surface side with respect to the absorbent layer 31. The surface sheet 10 can use what is normally used for an absorptive article, for example, a nonwoven fabric, an apertured film, etc. can be used.

The side sheet 15 covers the outer edge of the top sheet 10 and extends from the outer edge of the top sheet 10 to the outside in the width direction W. The side seat 15 is disposed on the wing 3 . In addition, although this Embodiment has the side sheet | seat 15, the absorbent article which concerns on this invention may be comprised so that the surface sheet 10 and the side sheet | seat 15 may be integrated, and it does not have a side sheet. .

  The absorption layer 31 includes an absorption material that absorbs body fluid. As the absorbent material, those normally used for absorbent articles can be used, and examples thereof include hydrophilic fibers, polymer water-absorbing polymers, or combinations thereof.

  The covering sheet 32 wraps the absorption layer 31. As the covering sheet 32, those normally used for absorbent articles can be used, and examples thereof include nonwoven fabrics and tissues. In addition, although this Embodiment has a coating sheet, the absorbent article which concerns on this invention does not need to have the coating sheet 32. FIG. The absorption layer 31 and the covering sheet 32 function as the absorber 30.

  The back sheet 20 is a liquid-impermeable sheet that does not transmit liquid such as body fluid. The back sheet 20 is disposed on the non-skin facing surface side T <b> 2 of the absorbent layer 31. The back sheet 20 can use what is normally used for an absorbent article, for example, a non-breathable or breathable film, a nonwoven fabric, etc. can be used. Moreover, the adhesive part (not shown) for fixing the absorbent article 1 to underwear is provided in the non-skin opposing surface (non-skin opposing surface of a back surface sheet) of the absorbent article 1.

  The functional material region 50 is disposed between the absorbent layer 31 and the top sheet 10. The functional material part includes at least both an antibacterial agent and a fragrance of a quaternary ammonium salt. The functional material region 50 is a region where a functional material is disposed. The antibacterial agent is selected from quaternary ammonium salts. As the fragrance, those usually used for absorbent articles can be used, and those having a high volatility with a boiling point of about 250 ° C. or lower, or those having a boiling point of about 250 to about 300 ° C. are preferable. Used.

  The absorbent article which concerns on this Embodiment has the antibacterial layer 61 which contains an antibacterial agent and does not contain a fragrance | flavor, and the fragrance | flavor layer 62 which does not contain an antibacterial agent and contains a fragrance | flavor. The covering sheet 32 is impregnated with an antibacterial agent. Therefore, the covering sheet 32 according to the present embodiment functions as the antibacterial layer 61. The fragrance layer 62 is disposed on the skin facing surface side of the covering sheet 32 as the antibacterial layer 61. The fragrance | flavor layer 62 is formed by apply | coating the solution containing a fragrance | flavor to the non-skin contact surface of the surface sheet 10, or the skin contact surface of the coating sheet 32. FIG.

  The functional material region 50 is a region where the antibacterial layer 61 and the fragrance layer 62 overlap in the thickness direction. FIG. 2 shows the functional material region 50. The skin facing surface of the functional material region 50 is the skin facing surface of the fragrance layer 62, and the non-skin facing surface of the functional material region 50 is the non-skin facing surface of the antibacterial layer 61. Therefore, the adjacent layers adjacent to the functional material region 50 in the thickness direction are the absorption layer 31 and the topsheet 10.

  In addition, the antibacterial layer 61 and the fragrance | flavor layer 62 should just overlap in the thickness direction, and the antibacterial layer 61 may be arrange | positioned at the skin opposing surface side of the fragrance | flavor layer 62. Further, another member may be disposed between the antibacterial layer 61 and the fragrance layer 62.

  In the absorbent article 1, a compressed material 80 in which the functional material region 50 and the adjacent layer are compressed in the thickness direction is formed. The pressing part 80 of this Embodiment is the antimicrobial layer 61 which comprises the functional material area | region 50, the fragrance | flavor layer 62 which comprises the functional material area | region 50, the surface sheet 10 as an adjacent layer, and the absorption layer 31 as an adjacent layer Is compressed. In addition, as for the pressing part 80, at least one and the functional material area | region 50 should just be compressed among several adjacent layers (surface sheet 10 and the absorption layer 31). By the pressing part 80, the functional material area | region 50, the surface sheet 10, and the absorption layer 31 are integrated. The density of the part in which the pressing part 80 was formed is higher than the density of the part in which the pressing part 80 is not formed. Therefore, a density gradient is formed between the portion where the compressed portion 80 is formed and the periphery of the compressed portion 80.

  The pressing unit 80 includes an annular first pressing unit 81 in a plan view, and a second pressing unit 82 disposed on the inner side in the width direction and on the inner side in the longitudinal direction than the first pressing unit 81. The first pressing part 81 has a plurality of first longitudinal pressing parts 81L extending in the longitudinal direction and a plurality of first width pressing parts 81W extending in the width direction. The second pressing part 82 includes a plurality of second longitudinal pressing parts 82L extending in the longitudinal direction and a plurality of second width pressing parts 82W extending in the width direction.

  The top sheet 10, the absorbent layer 31, the covering sheet 32, the back sheet 20 and the like constituting the absorbent article are bonded to each other via an adhesive. In FIG. 3, arrangement | positioning of the fragrance | flavor layer 62 and the adhesive agent A is shown typically. An adhesive A shown in FIG. 3 is an adhesive for joining the top sheet 10 and the covering sheet 32. The adhesive A is applied to the non-skin facing surface of the top sheet 10 or the skin facing surface of the covering sheet 32.

  The fragrance layer 62 according to the present embodiment is provided on the non-skin facing surface of the topsheet 10. The top sheet 10 to which the fragrance layer is applied is bonded to a covering sheet 32 as a member overlapping in the thickness direction via an adhesive A.

  The adhesive A is configured to extend at least in the width direction. Examples of the shape of the adhesive A in a plan view include a spiral shape, a circular shape, and an omega shape. On the other hand, the fragrance | flavor layer 62 is extended linearly along the longitudinal direction L by planar view. A plurality of the fragrance layers 62 are arranged at intervals in the width direction. The absorbent article 1 is provided with a region where the fragrance layer 62 and the adhesive A overlap in the thickness direction and a region where the fragrance layer 62 and the adhesive A do not overlap in the thickness direction.

(2) Action and effect In the configuration in which the antibacterial agent is disposed in the absorption layer as in the prior art, the antibacterial function can be exerted on the body fluid absorbed in the absorption layer. However, in the said structure, when the bodily fluid once absorbed by the absorption layer leaks out of the absorption layer, an antibacterial function cannot be exhibited with respect to the leaked bodily fluid.

  On the other hand, in the absorbent article 1 according to the present embodiment, the functional material region 50 is disposed between the absorbent layer 31 and the top sheet 10. Therefore, in the case where the body fluid discharged from the wearer touches the antibacterial agent in the process of being guided from the surface sheet 10 side to the absorption layer 31 side, and the body fluid once absorbed by the absorption layer 31 leaks to the surface sheet 10 side. Even body fluids touch antibacterial agents. As a result, the antibacterial function can be exhibited not only at the time of absorption after absorbing body fluid but also after absorbing body fluid.

  The functional material region 50 contains not only the antibacterial agent but also a fragrance. Therefore, the user can obtain not only the odor control effect by the antibacterial agent but also the relaxation effect by the fragrance.

  The pressing part 80 is formed in the functional material region 50 and the absorption layer 31 as an adjacent layer. The density of the pressing part 80 is higher than the density around the pressing part (area where the pressing part is not formed). Therefore, when the body fluid is absorbed by the absorbent article, the body fluid is drawn into the squeezed portion 80 having a relatively high density and collected. Even when the body fluid absorbed by the absorption layer leaks, the body fluid is drawn into the compressed portion 80 having a relatively high density.

  In the pressing part 80 into which the body fluid is drawn, the functional material region 50 is compressed. Therefore, the body fluid can be efficiently brought into contact with the antibacterial agent and the fragrance. The antibacterial agent can exert an antibacterial function, the fragrance can relieve the odor of body fluids, and the fragrance can give the user a refreshing feeling and relief.

  The adjacent layer may be the absorption layer 31. The compressed portion 80 is formed at least in the functional material region 50 and the absorption layer 31. Therefore, it becomes easy to draw the body fluid in the surface sheet 10 into the squeezed portion 80 having a relatively high density, and to the absorption layer 31, and the body fluid can be drawn quickly.

  As for the pressing part 80, the functional material area | region 50, the absorption layer 31, and the surface sheet 10 may be compressed by the thickness direction. In general, the density of the absorption layer 31 is higher than the density of the topsheet 10. Therefore, the pressing part 80 is provided not only in the functional material region 50 and the absorbent layer 31 but also in the top sheet 10, thereby quickly drawing the body fluid in the top sheet 10 into the absorbent layer 31 having a relatively high density. be able to. Therefore, the drawing speed of the bodily fluid on the top sheet 10 to the absorption layer 31 can be increased, and the wearing feeling can be improved.

  The antibacterial layer 61 and the fragrance layer 62 are adjacent in the thickness direction T, and the functional material region 50 may be a region where the antibacterial layer and the fragrance layer overlap in the thickness direction. Since the antibacterial layer 61 and the fragrance layer 62 are adjacent to each other, the antibacterial agent is easily eluted by the solution of the fragrance layer 62, and the antibacterial agent is easily guided to the pressing portion 80. Moreover, when an antibacterial agent elutes, an antibacterial agent spread | diffuses more and it becomes easy to touch a bodily fluid.

  A region where the fragrance layer 62 and the adhesive A do not overlap in the thickness direction T may be provided. When the adhesive A and the fragrance layer 62 overlap, the fragrance leaks into the adhesive, and the fragrance may affect the adhesive force of the adhesive. However, since the region where the fragrance layer 62 and the adhesive A do not overlap in the thickness direction is provided, the adhesive force can be secured at least in the region, and the adhesive force can be maintained within an appropriate range.

(3) Modified Example Next, an absorbent article according to a modified example will be described. In the description of the modification, the same reference numerals are used for the same configurations as those in the embodiment, and the description is omitted. The functional material region 50 of the absorbent article according to Modification 1 is a region where a mixed material in which an antibacterial agent and a fragrance are mixed is applied. Therefore, the absorbent article according to Modification 1 does not have the antibacterial layer 61 and the fragrance layer 62. The region to which the mixed material in which the antibacterial agent and the fragrance are mixed is applied, as in the fragrance layer 62 of the embodiment, may be arranged at intervals in the width direction, or in a certain range in the width direction. You may arrange | position so that it may extend.

  As a specific manufacturing method, a solution containing an antibacterial agent and a fragrance is applied to the non-skin facing surface of the top sheet 10 or the skin facing surface of the covering sheet 32. Subsequently, the pressing part 80 is formed in the area | region where the solution containing an antibacterial agent and a fragrance | flavor was apply | coated. By providing a functional material region 50 by applying a mixed material in which an antibacterial agent and a fragrance are mixed, the facility can be simplified as compared with the case where the antibacterial layer 61 and the fragrance layer 62 are separately provided.

  Next, an absorbent article 1A according to Modification 2 will be described with reference to FIG. The absorbent article 1 </ b> A according to Modification 2 includes an intermediate sheet 40 disposed between the top sheet 10 and the covering sheet 32. By providing the intermediate sheet 40, the absorption speed of the body fluid can be increased, and the return of the body fluid after absorption can be suppressed. As the intermediate sheet 40, for example, a nonwoven fabric or an apertured film is used.

  The intermediate sheet 40 is impregnated with an antibacterial agent. On the other hand, the covering sheet 32 is not impregnated with an antibacterial agent. Therefore, the intermediate sheet 40 according to Modification 2 functions as an antibacterial layer. The fragrance layer 62 is disposed on the skin facing surface side of the intermediate sheet 40. The pressing unit 80 is formed on the top sheet 10, the fragrance layer 62, the intermediate sheet 40, the covering sheet 32, and the absorbent layer 31.

  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.

  For example, the absorbent article may not include the wing. The absorbent article may be a linear squeezing part or a dotted squeezing part. By providing a plurality of dot-like compressed parts, high density portions and low density portions can be alternately formed, and the density gradient can be formed more finely. Moreover, according to the dotted | punctate pressing part, the freedom degree of arrangement | positioning is high and a density gradient can be provided suitably.

1,1A ··· absorbing material goods
DESCRIPTION OF SYMBOLS 3 ... Wing 10 ... Top sheet 15 ... Side sheet 20 ... Back sheet 31 ... Absorbing layer 32 ... Cover sheet 40 ... Intermediate sheet 50 ... Functional material area | region 61 ... Antibacterial layer 62 ... Fragrance layer 80 ... Squeezed part L ... Longitudinal direction T ... Thickness direction W ... Width direction

Claims (5)

A surface sheet;
A back sheet;
An absorbent article that is disposed between the top sheet and the back sheet and includes an absorbent layer that absorbs body fluids,
Between the absorption layer and the top sheet, a functional material region in which a functional material containing an antibacterial agent and a fragrance of a quaternary ammonium salt is provided is provided,
Ri All the functional material region and the functional material region and the adjacent layer adjacent in the thickness direction is pressed portion which is compressed formed in the thickness direction,
The perfume is highly volatile with a boiling point of 250 ° C. or lower,
The absorbent article includes the antibacterial agent, the antibacterial layer not including the fragrance, and the antibacterial agent does not include the fragrance layer including the fragrance,
The antibacterial layer and the fragrance layer are adjacent in the thickness direction,
The antibacterial layer is disposed on the skin facing surface side of the fragrance layer,
The functional material region is an absorbent article in which the antibacterial layer and the fragrance layer overlap with each other in the thickness direction .   The antibacterial layer is a covering sheet that wraps the absorbing layer,
  The absorbent article according to claim 1, wherein the fragrance layer is provided so as to be spaced in the width direction and extend in the longitudinal direction. The fragrance layer is applied to the top sheet or the adjacent layer,
The topsheet or the adjacent layer to which the fragrance layer is applied is bonded to a member overlapping in the thickness direction via an adhesive,
A region where the perfume layer and the adhesive overlap in the thickness direction;
A region where the adhesive is disposed and the perfume is not disposed;
A region where the adhesive is not disposed and the perfume is disposed;
Is provided, the absorbent article according to claim 2. The absorptive article according to any one of claims 1 to 3 in which said adjacent layer is said absorption layer. The said pressing part is an absorptive article according to claim 4 in which said functional material field, said absorption layer, and said surface sheet are compressed in said thickness direction.

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