JP2020124433A - Sanitary article - Google Patents

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JP2020124433A
JP2020124433A JP2019019932A JP2019019932A JP2020124433A JP 2020124433 A JP2020124433 A JP 2020124433A JP 2019019932 A JP2019019932 A JP 2019019932A JP 2019019932 A JP2019019932 A JP 2019019932A JP 2020124433 A JP2020124433 A JP 2020124433A
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Prior art keywords
water
biodegradable
sheet
back sheet
sanitary article
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貞利 渡部
Sadatoshi Watabe
貞利 渡部
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Nf Laboratories Inc
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Nf Laboratories Inc
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Priority to JP2019019932A priority Critical patent/JP2020124433A/en
Priority to PCT/JP2020/004500 priority patent/WO2020162529A1/en
Publication of JP2020124433A publication Critical patent/JP2020124433A/en
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/51—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the outer layers
    • A61F13/511—Topsheet, i.e. the permeable cover or layer facing the skin
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/51—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the outer layers
    • A61F13/514—Backsheet, i.e. the impermeable cover or layer furthest from the skin
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/53—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium

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  • Health & Medical Sciences (AREA)
  • Epidemiology (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Dermatology (AREA)
  • Absorbent Articles And Supports Therefor (AREA)

Abstract

To provide a sanitary article whose whole product is gentle to a natural environment due to being decomposed to water and carbon dioxide and extinguishing in the natural world, and whose whole product can be flushed away with water in a flush toilet.SOLUTION: In a sanitary article which comprises a top sheet (1), a rear surface sheet (2), and an absorber (3) held between the top sheet and the rear surface sheet, the top sheet (1) and the absorber (3) are formed of a hydrolyzable material, and the rear surface sheet (2) is formed of a waterproof biodegradable material. It is preferable that the top sheet and the absorber are formed of a biodegradable and hydrolyzable material, and the rear surface sheet is formed of a waterproof hydrolyzable and biodegradable material. The biodegradable material is preferably a polylactic acid-based resin, and comprises preferably 80-100 wt.% of a polylactic acid or lactic acid-hydroxy carboxylic acid copolymer, and 0-20 wt.% of a plasticizer. Especially, the rear surface sheet (2) has preferably a base material of a hydrolyzable material, and the surface disposed with a water-repellent layer.SELECTED DRAWING: Figure 2

Description

本発明は、衛生用品に関し、特に自然環境に優しい素材で構成された衛生用
品に関する。 The present invention relates to a hygiene product, and more particularly to a hygiene product made of a material that is kind to the natural environment.

従来、生理用ナプキン等の衛生用品は、不織布等で覆われた吸収体を不透水性フィルムの上に載せ、さらに全体を不織布等で覆った構造のものである。
これらの不透水性フィルム及び不織布等として、ポリオレフィン樹脂製のものが使用されていた（特許文献１） Conventionally, sanitary articles such as sanitary napkins have a structure in which an absorbent body covered with a non-woven fabric or the like is placed on a water-impermeable film and the whole is covered with the non-woven fabric or the like.
As these water-impermeable films and nonwoven fabrics, those made of polyolefin resin have been used (Patent Document 1).

特開昭６１−１７９３０７号公報Japanese Patent Laid-Open No. 61-179307

しかしながら、ポリオレフィン樹脂は、自然環境下では分解速度がきわめて遅いため廃棄された場合、廃棄物として長期間蓄積することとなる。
また、吸収体等を誤って水洗便器に廃棄してしまった場合、これら廃棄物が溜って、配管を詰まらせる問題が生じていた。 However, since the decomposition rate of polyolefin resin is extremely slow in a natural environment, when it is discarded, it will accumulate as waste for a long period of time.
Further, when the absorbent body or the like is mistakenly discarded in the flush toilet bowl, there is a problem that these waste materials are accumulated and clog the pipe.

一方、生分解性を有するポリマーとして、ポリ乳酸又は乳酸とその他のヒドロキシカルボン酸のコポリマー（以下、乳酸系ポリマーと略称する。）が開発されている。これらのポリマーは、土壌や海水中、さらにはコンポスト（堆肥）中に置かれた場合、湿った環境下では数週間で分解を始める。そして、分解生成物は、最終的には二酸化炭素と水になるものである。 On the other hand, as a biodegradable polymer, polylactic acid or a copolymer of lactic acid and another hydroxycarboxylic acid (hereinafter abbreviated as lactic acid-based polymer) has been developed. When placed in soil, seawater, or even in compost, these polymers begin to degrade in a few weeks in a moist environment. Then, the decomposition products finally become carbon dioxide and water.

本発明は、上記問題点に鑑み、吸収体等を容易に水に流せ、かつ自然環境下で分解可能な自然環境に優しい衛生用品を提供することにある。 In view of the above problems, the present invention is to provide a sanitary article which is easy to pour the absorbent body into water and can be decomposed in the natural environment, which is friendly to the natural environment.

本発明者らは、鋭意研究の結果、水洗トイレで水に流せる水解性で、自然環境下で分解可能な生理用品を開発した。
すなわち、本発明は下記の衛生用品である。
[１] 表面シート（１）、裏面シート（２）、及び表面シートと裏面シートの間に挟装された吸収体（３）とから成る衛生用品において、
表面シート（１）、及び吸収体（３）が水解性材料で構成され、
裏面シート（２）が防水性の生分解性材料で構成されてなることを特徴とする衛生用品。
[２] 表面シート、裏面シート、及び表面シートと裏面シートの間に挟装された吸収体とから成る衛生用品において、
表面シート及び吸収体が生分解性の水解性材料で構成され、
裏面シートが防水性の水解性生分解性材料で構成されてなることを特徴とする衛生用品。 As a result of earnest research, the present inventors have developed a sanitary product which is water-degradable and can be decomposed in a natural environment in a flush toilet.
That is, the present invention is the following hygiene article.
[1] A hygiene article comprising a topsheet (1), a backsheet (2), and an absorber (3) sandwiched between the topsheet and the backsheet,
The surface sheet (1) and the absorber (3) are made of a water-decomposable material,
A sanitary article, wherein the back sheet (2) is composed of a waterproof biodegradable material.
[2] A hygiene article comprising a top sheet, a back sheet, and an absorber sandwiched between the top sheet and the back sheet,
The surface sheet and the absorbent body are composed of a biodegradable water-decomposable material,
A sanitary article, wherein the back sheet is composed of a waterproof, water-degradable, biodegradable material.

[３] 裏面シートが、防水性で、生分解性のポリ乳酸系樹脂で構成されてなることを特徴とする[１]又は[２]に記載の衛生用品。
[４] 前記生分解性のポリ乳酸系樹脂が、ポリ乳酸又は乳酸−ヒドロキシカルボン酸コポリマー８０〜１００重量％と可塑剤０〜２０重量％とからなるものであることを特徴とする[３]記載の衛生用品。
[５] 前記吸収体が、パルプと生分解性の高吸水性ポリマーとからなるものであることを特徴とする[１]又は[２]記載の衛生用品。
[６] 裏面シートが、片側表面に撥水層が設けられたものであることを特徴とする[１]〜[５]のいずれか１項に記載の衛生用品。
[７] 裏面シートが、水解性の基材の表面に天然油脂又は蝋を塗布してなるものであることを特徴とする[１]〜[６]のいずれか１項に記載の衛生用品。 [3] The sanitary article according to [1] or [2], wherein the back sheet is made of a waterproof and biodegradable polylactic acid resin.
[4] The biodegradable polylactic acid-based resin comprises 80 to 100% by weight of polylactic acid or lactic acid-hydroxycarboxylic acid copolymer and 0 to 20% by weight of a plasticizer [3] Hygiene items listed.
[5] The hygiene article according to [1] or [2], wherein the absorbent body is made of pulp and a biodegradable superabsorbent polymer.
[6] The sanitary article according to any one of [1] to [5], wherein the back sheet has a water repellent layer on one surface.
[7] The sanitary article according to any one of [1] to [6], wherein the back sheet is formed by coating a surface of a water-decomposable base material with a natural oil or wax.

本願発明によれば、製品全体が自然界において水と炭酸ガスに分解して消滅する自然環境に優しい衛生用品を提供することができる。
そしてまた、製品全体を水洗トイレで配管を詰まらせることなく水に流すこともできる。 According to the invention of the present application, it is possible to provide a sanitary article which is friendly to the natural environment, in which the entire product is decomposed into water and carbon dioxide in the natural world and disappears.
Also, the entire product can be flushed into the flush toilet without clogging the piping.

本願発明実施例の衛生用品の一部断面斜視図Partial cross-sectional perspective view of a sanitary article according to an embodiment of the present invention 図１の中央断面拡大図Enlarged view of the central cross section of FIG.

本願発明の実施の形態を具体的に説明する。
本願発明の衛生用品構造は、特に限定されるものではなく、従来の構造のものでよいが、一例として図１に示す生理用ナプキンが挙げられる。
すなわち、本願発明の衛生用品は、表面シート（１）と裏面シート（２）、及び表面シートと裏面シートの間に挟装された吸収体（３）とから構成される。 Embodiments of the present invention will be specifically described.
The sanitary article structure of the present invention is not particularly limited and may be a conventional structure, but an example is the sanitary napkin shown in FIG.
That is, the sanitary article of the present invention is composed of the top sheet (1), the back sheet (2), and the absorber (3) sandwiched between the top sheet and the back sheet.

表面シート（１）は透水性の材料、例えば生分解性の不織布であり、裏面シート（２）は防水性の材料、例えば例えば生分解性のフィルム（例えばポリ乳酸（ＰＬＡ）フィルム、ポリブチルサクシネートフィルム（ＰＢＳ）、ナノセルロース（ＣＮＦ））や生分解性の布地である。
ポリ乳酸系を主成分とする防水フィルムには、体液防漏用シートとして、ポリ乳酸が好ましく使用される。
防水性フィルムの成形方法には特に制限はなく、公知の成形方法によりフィルム状に成形されたもので差支えない。
例えば、ポリ乳酸、乳酸−ヒドロキシカルボン酸コポリマー等の乳酸系ポリマーに可塑剤、無機充填剤、紫外線吸収剤等の添加剤を配合し、Ｔ−ダイ式押出成形法、インフレーション式押出成形法、カレンダー式成形法等によりフィルム状に溶融成形する方法が挙げられる。 The topsheet (1) is a water-permeable material, such as a biodegradable non-woven fabric, and the backsheet (2) is a waterproof material, such as a biodegradable film (eg, polylactic acid (PLA) film, polybutylsuccine). Nate film (PBS), nanocellulose (CNF)) and biodegradable fabrics.
For a waterproof film containing polylactic acid as a main component, polylactic acid is preferably used as a body fluid leakage prevention sheet.
The method for molding the waterproof film is not particularly limited, and it may be formed into a film by a known molding method.
For example, a lactic acid-based polymer such as polylactic acid or lactic acid-hydroxycarboxylic acid copolymer is mixed with an additive such as a plasticizer, an inorganic filler, or an ultraviolet absorber, and the T-die type extrusion molding method, inflation type extrusion molding method, calendar A method of melt-molding into a film by a molding method or the like can be mentioned.

そして、吸収体（３）は吸水性の材料で、例えば水解性で生分解性のものであり、パルプや不織布、セルロースフラフ、ナノセルロース（ＣＮＦ）等で構成されており、その表面又は／及び内部には、生分解性の高吸水性樹脂３’が担持されている。
さらに、裏面シート（２）の吸収体（３）側の表面には防水性の生分解性材料、例えば天然材の撥水剤層２’（蜜蝋）が塗着されている。 The absorbent body (3) is a water-absorbing material, for example, a water-decomposable and biodegradable material, and is composed of pulp, non-woven fabric, cellulose fluff, nanocellulose (CNF) or the like, and its surface or/and A biodegradable highly water-absorbent resin 3′ is carried inside.
Furthermore, a water-repellent biodegradable material, for example, a natural water repellent layer 2′ (beeswax) is applied to the surface of the back sheet (2) on the absorbent body (3) side.

本願発明における、表面シート、裏面シート、及び表面シートと裏面シートの間に挟装された吸収体は全て生分解性の材料で構成されるが、水解性であることが好ましい。
水解性とは、少量の水を含有した際には形状が崩壊することはないが、これを超える大量の水に投入することにより、例えば通常の水洗トイレに流したときに、その水流により形状が崩壊し、繊維の状態に解繊して水洗トイレを詰まらせることなく流すことができる性能である。
水解性材料の製造方法は、短繊維を水溶性の接着剤で接着して乾燥することで製造される。水溶性の接着剤としてはポリビニルアルコールが好ましく使用される。 In the present invention, the topsheet, the backsheet, and the absorbent body sandwiched between the topsheet and the backsheet are all made of a biodegradable material, but preferably water-decomposable.
Water disintegration means that the shape does not collapse when it contains a small amount of water, but when it is poured into a large amount of water exceeding this, for example, when it is flushed in a normal flush toilet, the shape of the water flows. Is disintegrated, defibrated into a fiber state and can be flushed without clogging the flush toilet.
The water-decomposable material is produced by adhering short fibers with a water-soluble adhesive and drying. Polyvinyl alcohol is preferably used as the water-soluble adhesive.

なお、裏面シート（２）面を、衣類等に粘着固定するために、粘着層を設ける際には、生分解性の粘着剤、例えば天然ゴムと短繊維との混合物から成るものを貼設すればよい。 When the adhesive layer is provided to adhere the back sheet (2) surface to clothes or the like, a biodegradable adhesive, for example, one made of a mixture of natural rubber and short fibers should be attached. Good.

生分解性吸水ポリマとしては、自己架橋型アルキルセルロース誘導体を乾燥後顆粒状にしたものや、高吸水性デンプンゲルを乾燥後顆粒状にしたもの、ポリグルタミン酸やポリアスパラギン酸に放射線で架橋したもの、カルボキシメチルセルロースナトリウムを金属塩で架橋したものなど、生分解性の吸水ポリマであればよいが、特にガラクトマンナンの架橋物が好ましい。 Biodegradable water-absorbing polymers include self-crosslinking alkyl cellulose derivatives that are dried and then granulated, superabsorbent starch gel that is dried and then granulated, and polyglutamic acid and polyaspartic acid cross-linked by radiation. Any biodegradable water-absorbing polymer such as those obtained by cross-linking sodium carboxymethyl cellulose with a metal salt may be used, but cross-linked galactomannan is particularly preferable.

裏面シート（２）は、生分解性であり、かつ水解性であることが好ましい。
それを実現するためには、図２に示すごとく、基材（２）を水解性のシートで構成し、その表面（吸収体側）に生分解性の油脂（２’）、例えば蜜蝋を塗布しておくことが好ましい。 The back sheet (2) is preferably biodegradable and water-decomposable.
In order to achieve this, as shown in FIG. 2, the base material (2) is composed of a water-decomposable sheet, and its surface (absorber side) is coated with biodegradable fats and oils (2′), for example beeswax. It is preferable to keep.

１：表面シート
２：裏面シート
２’：蜜蝋
３：吸収体
３’：高吸水性樹脂
1: Top sheet 2: Back sheet 2': Beeswax 3: Absorber 3': Super absorbent polymer

Claims (7)

表面シート、裏面シート、及び表面シートと裏面シートの間に挟装された吸収体とから成る衛生用品において、
表面シート及び吸収体が水解性材料で構成され、
裏面シートが防水性の生分解性材料で構成されてなることを特徴とする衛生用品。 In a hygiene article consisting of a top sheet, a back sheet, and an absorber sandwiched between the top sheet and the back sheet,
The surface sheet and the absorber are made of a water-decomposable material,
A sanitary article, wherein the back sheet is made of a waterproof biodegradable material. 表面シート、裏面シート、及び表面シートと裏面シートの間に挟装された吸収体とから成る衛生用品において、
表面シート及び吸収体が生分解性の水解性材料で構成され、
裏面シートが防水性の水解性生分解性材料で構成されてなることを特徴とする衛生用品。 In a hygiene article consisting of a top sheet, a back sheet, and an absorber sandwiched between the top sheet and the back sheet,
The surface sheet and the absorbent body are composed of a biodegradable water-decomposable material,
A sanitary article, wherein the back sheet is composed of a waterproof, water-degradable, biodegradable material. 裏面シートが、防水性で、生分解性のポリ乳酸系樹脂で構成されてなることを特徴とする請求項１又は２に記載の衛生用品。 The sanitary article according to claim 1 or 2, wherein the back sheet is made of a waterproof and biodegradable polylactic acid-based resin. 前記生分解性のポリ乳酸系樹脂が、ポリ乳酸又は乳酸−ヒドロキシカルボン酸コポリマー８０〜１００重量％と可塑剤０〜２０重量％とからなるものであることを特徴とする請求項３記載の衛生用品。 4. The hygiene according to claim 3, wherein the biodegradable polylactic acid-based resin comprises 80 to 100% by weight of polylactic acid or lactic acid-hydroxycarboxylic acid copolymer and 0 to 20% by weight of a plasticizer. Supplies. 前記吸収体が、パルプと生分解性の高吸水性ポリマーとからなるものであることを特徴とする請求項１又は２に記載の衛生用品。 The hygiene article according to claim 1 or 2, wherein the absorbent body is made of pulp and a biodegradable superabsorbent polymer. 裏面シートが、片側表面に撥水層が設けられたものであることを特徴とする請求項１〜５のいずれか１項に記載の衛生用品。 The sanitary article according to any one of claims 1 to 5, wherein the back sheet has a water repellent layer on one surface. 裏面シートが、水解性の基材の表面に天然油脂又は蝋を塗布してなるものであることを特徴とする請求項１〜６のいずれか１項に記載の衛生用品。
7. The sanitary article according to any one of claims 1 to 6, wherein the back sheet is formed by coating a surface of a water-decomposable base material with natural fat or oil or wax.
JP2019019932A 2019-02-06 2019-02-06 Sanitary article Pending JP2020124433A (en)

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JP4201820B2 (en) * 2007-02-26 2008-12-24 ユニチカファイバー株式会社 Sanitary article face sheet
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WO2022019097A1 (en) 2020-07-21 2022-01-27 株式会社スリーボンド Photocurable resin composition for nails or artificial nails, cured product, and method for coating nails or artificial nails

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