JP5766374B1 - Absorbent articles - Google Patents

Abstract

[PROBLEMS] To reduce the risk that an adhesive applied to an underwear contact surface side remains in an undergarment after use even when a fragrance 30 is included. In the absorbent article according to the present embodiment, in the thickness direction T, an ethylene vinyl alcohol copolymer resin is provided between a region where an adhesive is applied and a region where a fragrance is included. By a material selected from the group consisting of polyvinyl alcohol, polyvinylidene chloride, polyamide, polyester, polyvinyl chloride, aluminum coated film and aluminum foil, polymer film coated with volatile impermeable lacquer, or mixtures thereof In the plan view, the layer, the region where the adhesive 15 is applied, and the region where the fragrance 30 is included overlap in a plan view. [Selection] Figure 2

Description

  The present invention relates to an absorbent article.

  Conventionally, sanitary napkins containing perfumes are known. Here, Patent Document 1 discloses a technique for preventing the problem that in such a sanitary napkin, the fragrance leaks out of the individual package.

China Patent Publication Number: CN100531691C

  However, the sanitary napkin disclosed in Patent Document 1 has the following problems.

  In such a sanitary napkin, the fragrance leaked from the sanitary napkin comes into contact with the adhesive applied to the underwear contact surface side of the sanitary napkin in the individual package.

  Here, the perfume contained in such sanitary napkins usually contains a large amount of chemical substances such as alcohols, esters and ketones, and among these chemical substances, components having a low boiling point are included. There is also. On the other hand, a rubber-based hot-melt adhesive is usually used as the above-mentioned adhesive.

  Therefore, the component having a low boiling point contained in the fragrance is easily adsorbed and dissolved by the above-mentioned adhesive. As a result, such an adhesive becomes soft and its cohesive strength also decreases, so that there is a risk that the adhesive remains on the undergarment after the sanitary napkin is used.

  Therefore, the present invention has been made in view of the above-described problems, and even if a fragrance is included, the adhesive applied to the underwear contact surface side remains on the underwear after use. It aims at providing the absorbent article which can reduce the risk which will end.

  A first feature of the present invention is an absorbent article having a longitudinal direction, a width direction, and a thickness direction, wherein the backsheet is provided on the non-skin contact surface side in the thickness direction. An adhesive is applied to the underwear contact surface side, and a fragrance is included. In the thickness direction, ethylene is provided between the region where the adhesive is applied and the region where the fragrance is included. Group consisting of vinyl alcohol copolymer resin, polyvinyl alcohol, polyvinylidene chloride, polyamide, polyester, polyvinyl chloride, aluminum coated film and aluminum foil, polymer film coated with volatile impermeable lacquer, or mixtures thereof A layer made of a material selected from the above, and in a plan view, the layer, the region where the adhesive is applied, and the fragrance Rare, and the space that is the subject matter that they are overlapping.

  As described above, according to the present invention, even when a fragrance is included, after use, the risk that the adhesive applied to the underwear contact surface side remains in the underwear is reduced. The absorbent article which can be provided can be provided.

It is the top view seen from the skin contact surface side of the absorptive article concerning a 1st embodiment of the present invention. It is XX sectional drawing in FIG. It is a figure for demonstrating the folding method of the absorbent article which concerns on the 1st Embodiment of this invention.

  With reference to FIG. 1 thru | or FIG. 3, the absorbent article 1 which concerns on the 1st Embodiment of this invention 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 1 according to the present embodiment as viewed from the skin contact surface side, FIG. 2 is a sectional view taken along line XX in FIG. 1, and FIG. The folding method of the absorbent article 1 which concerns is shown.

  In the present embodiment, a sanitary napkin that is used by being worn in underwear will be described as an example of the absorbent article 1, but the present invention is not limited to such a case, and any panty liner or the like may be used. It is applicable to absorbent articles.

  As shown in FIGS. 1 and 2, the absorbent article 1 according to this embodiment has a longitudinal direction L, a width direction W, and a thickness direction T that are orthogonal to each other.

  Moreover, as shown in FIG. 2, the absorbent article 1 according to the present embodiment includes a liquid-permeable top sheet 11 provided on the skin contact surface side and an underwear contact surface side (non-skin contact surface). A liquid-impermeable back sheet 12 provided on the side) and an absorber 13 provided between the top sheet 11 and the back sheet 12.

  Moreover, the absorbent article 1 which concerns on this embodiment is equipped with the side sheet | seat 14 provided so that it may extend to the outer side of the width direction W of the top sheet 11, as shown in FIG.

  In addition, the absorbent article 1 which concerns on this embodiment may be equipped with the second sheet | seat 21 between the top sheet 11 and the absorber 13, as shown in FIG. A second sheet 22 may be provided between the two.

  Here, in the absorbent article 1 according to the present embodiment, the top sheet 11, the second sheet 21, the absorber 13, the second sheet 22, and the back sheet 12 are preferably joined so as not to be separated from each other. Such joining is realized, for example, by using an embossing treatment, an ultrasonic treatment, a hot melt adhesive, or the like alone or in combination.

  Such hot melt adhesives include SIS (styrene-isoprene-styrene copolymer), SBS (styrene-butadiene-styrene copolymer), SEBS (styrene-ethylene-butylene-styrene copolymer), etc. Pressure sensitive adhesives mainly composed of olefins such as rubber and linear low density polyethylene, heat sensitive adhesives, polyvinyl alcohol made of water-soluble polymers, carboxymethyl cellulose, gelatin, etc., or water swelling Examples thereof include water-sensitive adhesives such as polyvinyl acetate and poly (sodium acrylate) made of a conductive polymer.

  In particular, even if it oozes out to the outer surface, it is preferable to use a heat-sensitive adhesive that does not have tackiness at that time.

  Specific examples include those obtained by melt mixing 5 to 25% SEBS, 40 to 60% alicyclic saturated hydrocarbon, 1 to 10% aromatic modified terpene, and 15 to 35% additive. It is done.

  As shown in FIG. 1, in the absorbent article 1 which concerns on this embodiment, the pressing area | region 100 may be formed by the embossing process.

  Furthermore, in the absorbent article 1 according to the present embodiment, as shown in FIG. 2, the adhesive 15 is applied to the underwear contact surface side of the back sheet 12 in the thickness direction T. The adhesive 15 serves to fix the absorbent article 1 to the wearer's underwear. In the state where the absorbent article 1 is packaged, the adhesive 15 is covered with a separator or the like.

  As the adhesive 15, rubber-based pressure sensitive adhesives such as SIS, SBS, and SEBS may be used. Specific examples include 5-25% SBS and SIS, 40-60% alicyclic saturated hydrocarbons, 1-10% aromatic modified terpenes, and 15-35% additives. Is mentioned.

  Moreover, the aroma 30 is contained in the absorbent article 1 which concerns on this embodiment. As shown in FIG. 2, in the absorbent article 1 according to this embodiment, the fragrance 30 is applied to the skin contact surface side (absorber 13 side) of the second sheet 21.

  Specifically, for example, as such a fragrance, a chemical substance having “Hexyl Cinamic Aldehyde”, “Lilial”, “Linaroll”, and “Dipropylene (solvent)” as the upper four components can be used.

  Alternatively, as such a fragrance, a chemical substance having “Linaroll”, “Methyl dehydrojasmonate”, “Benzyl Acetate”, and “Dipropylene Glycol (solvent)” as the top four components can be used.

  Moreover, you may mix | blend essential oil (for example, peppermint and lemon) with these chemical substances.

  In addition, this fragrance | flavor 30 may be apply | coated to the skin contact surface side (absorber 13 side) of the top sheet 11, and is applied to the skin contact surface side (absorber 13 side) of the second sheet 22. May be.

  Moreover, the absorbent article 1 which concerns on this embodiment WHEREIN: Between the area | region where the adhesive agent 15 is apply | coated and the area | region where the fragrance | flavor 30 is contained in the thickness direction T, ethylene vinyl alcohol copolymer resin, polyvinyl alcohol Composed of a material selected from the group consisting of: polyvinylidene chloride, polyamide, polyester, polyvinyl chloride, aluminum coated film and aluminum foil, polymer film coated with volatile impermeable lacquer, or mixtures thereof Has a layer.

  According to this structure, since the fragrance | flavor 30 can be wrapped by this layer after the absorbent article 1 is folded, the situation where the fragrance | flavor 30 discharge | releases outside before use can be avoided.

  Moreover, according to this structure, since contact with the fragrance | flavor 30 and the adhesive agent 15 can be avoided, since it is not necessary to affect the performance of the adhesive agent 15, after use, it is on the underwear contact surface side. The risk that the applied adhesive 15 remains in the undergarment can be reduced.

  In the absorbent article 1 according to the present embodiment, as illustrated in FIG. 2, the layer is configured by a back sheet 12.

  According to such a configuration, without providing a new member in the absorbent article 1, it is possible to more reliably reduce the risk that the adhesive 15 applied to the underwear contact surface side will remain on the underwear after use. Can do.

  Alternatively, the absorbent article 1 according to the present embodiment may be provided separately from the back sheet 12.

  According to such a configuration, it is possible to more reliably reduce the risk that the adhesive 15 applied to the underwear contact surface side will remain on the underwear after use without affecting the performance of the backsheet 12. it can.

  In addition, this layer may be provided between the top sheet 11 and the second sheet 21, or may be provided between the second sheet 21 and the absorber 13, or the absorber 13 and the second sheet. 22 may be provided, or may be provided between the second sheet 22 and the back sheet 12. In addition, when the second sheet | seat 21 is not provided, this layer may be provided between the top sheet 11 and the absorber 13. FIG. In addition, when the second sheet 22 is not provided, such a layer may be provided between the absorber 13 and the back sheet 12.

Moreover, it is preferable that the material which comprises this layer has the permeability | transmittance which permeate | transmits only the range of 1 m < ² > within 200 cm < ³ > in 24 hours under 1 atmosphere at 1 atmosphere.

  Here, the permeability can be measured by the oxygen permeability (isobaric method) defined in “JIS K 7176-2”.

  It should be noted that since there are many known techniques for forming a material having such transparency, any of these known techniques can be used to form such a material.

The thickness of the material is preferably in the range of 0.02 mm to 1.00 mm, and the weight of the material is preferably in the range of 18.0 g / m ² to 70.0 g / m ² .

  According to such a configuration, the release of the fragrance 30 to the extent that affects the adhesive 15 can be prevented. That is, according to this structure, adsorption | suction to the adhesive agent 15 of the fragrance | flavor 30 can be restrained to less than 1%. Further, it has been found that when the bonding strength of the adhesive 15 is stronger than the strength of the back sheet 12, there is a high concern that the back sheet 12 is torn and adhesive residue of the adhesive 15 on the underwear is generated.

  Furthermore, the absorbent article 1 according to the present embodiment has an inner side in the width direction W along two fold lines F1 / F2 extending in the longitudinal direction L, as shown in FIGS. 3 (a) to 3 (c). It may be configured to be folded.

  Moreover, the absorbent article 1 which concerns on this embodiment is the inner side of the longitudinal direction L along the two folding lines F3 / F4 extended in the width direction W, as shown in FIG.3 (d) and FIG.3 (e). It may be configured to be folded.

  In the absorbent article 1 according to the first embodiment, as shown in FIG. 1, the region containing the fragrance 30 is provided on the inner side in the width direction W than the two folding lines F1 / F2.

  According to this structure, since the fragrance | flavor 30 can be wrapped also by the side sheet 14 after the absorbent article 1 is folded, the contact with the fragrance | flavor 30 and the adhesive agent 15 can be avoided more.

  For example, the region containing the fragrance 30 may be provided on the entire inner surface in the width direction W with respect to the two folding lines F1 / F2, or the width with respect to the two folding lines F1 / F2. It may be provided in a part inside the direction W (see FIG. 1). Further, in the latter case, the region containing the fragrance 30 may be provided in a part of the absorbent article 1 in the vicinity of the center line O in the width direction W (see FIG. 1). It may be provided in a part near the line F1 / F2.

DESCRIPTION OF SYMBOLS 1 ... Absorbent article 11 ... Top sheet 12 ... Back sheet 13 ... Absorber 14 ... Side sheet 15 ... Adhesive 21, 22 ... Second sheet 30 ... Fragrance 100 ... Compression area F1, F2, F3, F4 ... Folding line

Claims (4)

An absorbent article having a longitudinal direction, a width direction, and a thickness direction,
An adhesive is applied to the underwear contact surface side of the back sheet provided on the non-skin contact surface side in the thickness direction,
Contains fragrance,
In the thickness direction, an ethylene vinyl alcohol copolymer resin, polyvinyl alcohol, polyvinylidene chloride, polyamide, polyester, polyvinyl chloride, between the region where the adhesive is applied and the region where the fragrance is contained, Having a layer composed of a material selected from the group consisting of an aluminum coated film and aluminum foil, a polymer film coated with a volatile impermeable lacquer, or a mixture thereof;
In plan view, the region where the adhesive is applied and the region where the fragrance is included overlap ,
The absorbent article is configured to be folded inward in the width direction along two fold lines extending in the longitudinal direction,
The region containing the fragrance is provided on the inner side in the width direction than the two fold lines,
The said layer is comprised so that it may extend outside the said width direction rather than the area | region where the said fragrance | flavor is contained, and the said two fold lines .   The absorbent article according to claim 1, wherein the layer is constituted by the back sheet.   The absorbent article according to claim 1, wherein the layer is provided separately from the back sheet. The material has a permeability of transmitting only 200 cm ³ or less in a range of 1 m ² in 24 hours under 1 atm of oxygen,
The thickness of the material is in the range of 0.02 mm to 1.00 mm;
The absorbent article according to any one of claims 1 to 3, wherein the weight of the material is in the range of 18.0 g / m ² to 70.0 g / m ² .

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