WO2007066699A1 - Multilayer absorbent sanitary articles - Google Patents

Multilayer absorbent sanitary articles Download PDF

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Publication number
WO2007066699A1
WO2007066699A1 PCT/JP2006/324386 JP2006324386W WO2007066699A1 WO 2007066699 A1 WO2007066699 A1 WO 2007066699A1 JP 2006324386 W JP2006324386 W JP 2006324386W WO 2007066699 A1 WO2007066699 A1 WO 2007066699A1
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WO
WIPO (PCT)
Prior art keywords
sanitary article
fibers
absorbent sanitary
melting point
multilayer absorbent
Prior art date
Application number
PCT/JP2006/324386
Other languages
French (fr)
Japanese (ja)
Inventor
Naomi Yano
Erina Nakajima
Original Assignee
Kobayashi Pharmaceutical Co., Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kobayashi Pharmaceutical Co., Ltd. filed Critical Kobayashi Pharmaceutical Co., Ltd.
Publication of WO2007066699A1 publication Critical patent/WO2007066699A1/en

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Classifications

    • 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
    • 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
    • A61F13/51401—Backsheet, i.e. the impermeable cover or layer furthest from the skin characterised by the material
    • 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
    • A61F13/51474—Backsheet, i.e. the impermeable cover or layer furthest from the skin characterised by its structure
    • A61F13/51478—Backsheet, i.e. the impermeable cover or layer furthest from the skin characterised by its structure being a laminate, e.g. multi-layered or with several layers
    • A61F13/5148—Backsheet, i.e. the impermeable cover or layer furthest from the skin characterised by its structure being a laminate, e.g. multi-layered or with several layers having an impervious inner layer and a cloth-like outer layer
    • 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
    • A61F13/15577—Apparatus or processes for manufacturing
    • A61F2013/15821—Apparatus or processes for manufacturing characterized by the apparatus for manufacturing
    • A61F2013/15934—Apparatus or processes for manufacturing characterized by the apparatus for manufacturing for making non-woven
    • A61F2013/15959—Apparatus or processes for manufacturing characterized by the apparatus for manufacturing for making non-woven by spunbond technique
    • 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
    • A61F2013/51002—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 with special fibres
    • A61F2013/51023—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 with special fibres being polymeric fibres
    • A61F2013/51026—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 with special fibres being polymeric fibres being in thermoplastic material
    • 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
    • A61F13/51401—Backsheet, i.e. the impermeable cover or layer furthest from the skin characterised by the material
    • A61F2013/51441—Backsheet, i.e. the impermeable cover or layer furthest from the skin characterised by the material being a fibrous material
    • A61F2013/51452—Backsheet, i.e. the impermeable cover or layer furthest from the skin characterised by the material being a fibrous material being nonwovens
    • 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
    • A61F2013/530131—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 being made in fibre but being not pulp
    • A61F2013/530226—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 being made in fibre but being not pulp with polymeric fibres
    • A61F2013/530233—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 being made in fibre but being not pulp with polymeric fibres being thermoplastic fibres

Definitions

  • toddlings and other tots used for body collection have a laminated structure that mainly includes a surface, an absorber and a cot.
  • non-woven fabric is generally used for absorption (for example, patent). It is categorized into the laws of cloth, donch, sun, subond, metbond and aid. Because of their excellent breathability, they are widely used in the field of sanitary goods such as diapers and sanitary napkins.
  • the main purpose is to provide a biological product that does not regain moisture, is highly breathable, and is good for being irresistible.
  • Multi-layered biological products including those containing po, and characterized by being manufactured by the suns method.
  • the cloth made of cloth is the cloth manufactured by the sun bond method and the cloth manufactured by the met method.
  • the cloth manufactured by the suns method is used for absorption.
  • the fibers produced by the suns method exist in the state of lying in a plane, so that the absorbed amount is quickly diffused.
  • the amount of water absorbed is small, most of the water retained by absorption is absorbed. Therefore, according to Ming's biological products, Even when pressure is applied during use, water is retained for absorption, so that water does not return and no discomfort occurs when using the product.
  • the inclusion of the porosity produced by the above-mentioned shun method can suppress the fluffing caused by the movement of the body during use. This makes it possible to maintain a low level of absorption and prevent continuous backflow.
  • the cloth can be used for the jacket. Therefore, in the case of 00100, which is capable of providing a multi-layered biological product having even better breathability and better or better breathability, it is manufactured by the suns method. By using the cloth containing the foam, it is possible to reduce the absorption only, and it is possible to provide a multi-layered biological product that is extremely thin and excellent in use.
  • the biological product of 001 has a multi-layered structure in which surface tocks are laminated with an absorption layer interposed therebetween.
  • containing po means that the melting point is about 6 C or less, preferably 4 C or less, more preferably 3 C or less, and further preferably 2 C or less.
  • po there is no particular limitation on the po to be used as long as it has this point.
  • Poin-based materials such as polymerized nylon, potin (P 2), poppin (PP) and the like are mentioned, and modified PP PP and the like are preferable.
  • P 2 potin
  • PP poppin
  • the absorption weight can be set to 2 full, for example, 5 to 9 degrees.
  • absorption is preferable, and it is not particularly limited as long as it has a higher point than po.
  • Examples of water-based materials include cotton, hemp, and acetate. In order to increase the retention of the amount of the above, it is preferable that the content of the process system is included.
  • the fibers containing the above-mentioned porosity, and, if necessary, the absorption vowels, the absorption pu, etc. can be combined to produce. It is desirable that these have higher points than po.
  • the aqueous solution include aqueous polymers, aqueous polymers, iopo, and the like.
  • 002 is not particularly limited by its surface structure, and may have various structures represented by variants ,,, etc. Also, it is not particularly limited as long as it achieves the effect of It is not done and can be set according to the case.
  • a cloth constructed by including a material having the above and po is used as an absorbent.
  • Manufactured by the suns method which is obviously used.
  • the shuns method is a method of manufacturing cloth by using a high-speed jet and a flow, and then by pressing a fiber (for example, cloth manufacturing and application Yoshio Mura Co., Ltd.).
  • drying generally about ⁇ 6 C. In the case of containing po, 2 ⁇ 6 C is preferred) is usually required in order to utilize the water stream.
  • the porosity can be solved as described above and the fiber can be maintained in a small amount.
  • the biological products even if pressure is applied during the use of the biological products, the amount is retained by absorption, and no discomfort occurs when the products are used. In addition, even when it is in use, it can be sustained without fluttering and keeps out moisture. You can prevent the return.
  • the cloth can be used as the cloth because the water content is retained. Therefore, it is possible to provide a multi-layered biological product having an even better breathability and a better or better breathability.
  • it is usually ⁇ 5 to 2 °, preferably ⁇ 6 to ⁇ 5 m, and more preferably ⁇ 7 to ⁇ 2 °.
  • the degree of use be 3 to 8 degrees, more preferably 4 to 6 degrees. I hope it is degree.
  • the quats used in the mycelium of biological products there are no particular restrictions on the quats used in the mycelium of biological products, as long as the absorbed portion is in the form of a thyme that has some property that is absorbed, and that it has sexuality and temper. It is preferable to be one.
  • the material for this material it is desirable that the material that is normally used is widely used and has good performance. Examples of the material having properties include poin, popin, and other poins, postins, nines, pores, postins, povidene, and these ims.
  • cloth As a bag for Myobi's biological products.
  • cloth for the case of conventional clothes and the like, when cloth is used for the clothes, there is a problem that the clothes and the like are absorbed due to the peeling.
  • the absorption rate is increased by using the method described in () above. hand, Obviously, even if you use a cloth for the jacket, it will not show up.
  • the use of cloth for the garment further improves the temper of the brightly-ground items.
  • the cloth used for the 003 jacket the cloth composed of the above-mentioned material can be used.
  • the method of cloth is not particularly limited as long as it does not impair the clarity of the invention, but it is preferable that the cloth manufactured by the sun bond method and the cloth manufactured by the met method be two or more. , And more preferably, it is desirable to use the one laminated four.
  • fabrics include S) and S S (SUNBOND METHONOBOND).
  • the number of coats used in the present invention it is usually in the range of ⁇ 5 ⁇ degree, preferably ⁇ ⁇ ⁇ 6 degree, more preferably ⁇ 2 ⁇ ⁇ 4 degree. is there.
  • the coat used in the present invention is not particularly limited, but is usually to 6 degrees, preferably 2 to 5 degrees, and more preferably 25 to 45 degrees.
  • the surface refers to something that is permeable so as to directly touch the body such as the local area (,), pass through the objects and penetrate into the lower layer. Therefore, it does not particularly limit the types of constituent materials or the construction of guts. Materials that can be used to form such surfaces include, for example, post, podo, acu, poppin, potinnoposte, potinnopopin, hemp, and hemp. Of the asset
  • the structure of the grate is not particularly limited, and examples thereof include a product, a knitted fabric, a non-woven fabric (including a fabric composed of filaments), and the like. Above all, it is preferable that it has elasticity and flexibility. Is.
  • the cloth used for the fabric is not particularly limited and may be manufactured according to a conventional method. Further, the surface may have a structure to increase the transparency of the surface, or may be formed on the surface by an emboss to improve the feel of the skin.
  • the surface to be used in the present invention is not particularly limited, but it is usually ⁇ 5 to °, preferably ⁇ to ⁇ 6 degrees, and more preferably ⁇ 2 to ⁇ 4 degrees.
  • the biological product of the present invention is not particularly limited in its production method as long as it does not impair the effects of the present invention, and is produced by a conventional method.
  • the method include a method in which the surface layers of the coat are laminated with an absorption therebetween, and the layers are heat-bonded with an adhesive or the like, and the sheet is punched and cut in a desired shape.
  • it may have a layer composed of a cot, an absorbent body and a garment, a garment, and other components, for example, it has an adhesive property on the garment (that is, on the undergarment), and You may also have packaging, etc.
  • the conventional one can be used for.
  • the shape of the MYO organisms is not particularly limited as long as it does not impair the effects of the AOMI, but when the AO organisms are used as a vehicle or a urine, for example, a small Squares Those with a square are preferred.
  • a square is a quadrangle that is all right angles and is longer than one side is tangent and the side length is equal.
  • the rectangular shape has a horizontally long shape which is a characteristic of a rectangle, and examples thereof include a shape, a shape, a gourd shape, and a trapezoid shape.
  • Organisms of the present invention can be used in sizes that are usually applied to human beings, toddlers, rods, etc., and can be determined depending on the application.
  • the whole Ming organism of Ming is not particularly limited as long as it can achieve the results of Ming.
  • ⁇ 6 to 3 degrees, preferably ⁇ 8 to 2.7 degrees is more preferable.
  • the body and the cot were manufactured according to the composition and method shown in.
  • the absorption was sandwiched between the surface tocks made of P PP PP P, laminated, adhered, and the outer periphery was heat-bonded and punched to obtain the casks of Examples 3 to 3.

Abstract

[PROBLEMS] To provide multilayer absorbent sanitary articles which do not suffer from the backward flow of liquid and are excellent in air permeability and touch. [MEANS FOR SOLVING PROBLEMS] A multilayer absorbent sanitary article obtained by laminating a face sheet, a back sheet, and an absorbent characterized by comprising fibers containing a low-melting polymer and by being produced by the spunlace process with the absorbent sandwiched between both sheets; and a multilayer absorbent sanitary article comprising the above absorbent and a back sheet made of a nonwoven fabric.

Description

多層吸収性衛生物品 Multilayer absorbent sanitary articles
技術分野 Technical field
[0001] 本発明は、水分の逆戻りのない多層吸収性衛生物品に関する。 [0001] The present invention relates to a multilayer absorbent sanitary article with no moisture backflow.
背景技術 Background technology
[0002] おりものシートや汗とりパッド等の体液吸収用に使用されるシートは、主に、表面シ ート、吸収体及びバックシートを含む積層構造を有する。このようなシートにおいて、 吸収体には、一般に不織布が使用される（例えば、特許文献 1)。不織布の種類は、 ニードルパンチ法、スパンレース法、サーマルボンド法、メルトボンド法、エアレイド法 等の製造方法によって分類されている。これらの不織布は、通気性に優れ、肌触りが よいことから、おむつ、生理用ナプキン等の衛生物品の分野において汎用されてい る。 [0002] Sheets used for absorbing body fluids, such as vaginal discharge sheets and sweat pads, mainly have a laminated structure including a top sheet, an absorbent body, and a back sheet. In such sheets, a nonwoven fabric is generally used as the absorber (for example, Patent Document 1). Types of nonwoven fabrics are classified according to manufacturing methods such as needle punch method, spunlace method, thermal bond method, melt bond method, and air laid method. These nonwoven fabrics are widely used in the field of sanitary products such as diapers and sanitary napkins because they have excellent breathability and are comfortable to the touch.
[0003] し力しながら、従来の不織布では、特に、おりものシート等の体液吸収の目的で用 いられる薄型シートに適用される場合、不織布を構成する繊維間の空隙が多いこと から、充分な水分保持力が得られなカゝつた。すなわち、繊維中だけではなぐ繊維間 の空隙にも吸収された体液等の水分が保持されるため、使用に際して圧がカゝかった 場合、圧によって繊維間の空隙に存在する水分が逆戻りし、ベたつき、不快感等の 原因となることが問題となっていた。 [0003] However, in conventional non-woven fabrics, especially when applied to thin sheets used for the purpose of absorbing body fluids such as vaginal discharge sheets, there are many voids between the fibers that make up the non-woven fabric, so it is not sufficient. It was difficult to obtain adequate moisture retention. In other words, absorbed moisture such as body fluids is retained not only in the fibers but also in the voids between the fibers, so if the pressure is too high during use, the pressure will cause the moisture present in the voids between the fibers to return. The problem was that it caused stickiness and discomfort.
特許文献 1 :特開 2005— 312990 Patent document 1: Japanese Patent Application Publication No. 2005-312990
発明の開示 Disclosure of invention
発明が解決しょうとする課題 Problems that the invention seeks to solve
[0004] 本発明は、水分の逆戻りがなぐ通気性に優れ、ベたつきがないために肌触りが良 好な多層吸収性衛生物品を提供することを、主な目的とする。 [0004] The main object of the present invention is to provide a multilayer absorbent sanitary article that prevents moisture from returning, has excellent breathability, and is non-sticky and feels good to the touch.
課題を解決するための手段 Means to solve problems
[0005] 本発明者らは、低融点ポリマーを含む繊維を含有し、スパンレース法によって製造 された不織布を吸収体として用いることにより、水分の逆戻りのない多層吸収性衛生 物品を提供できることを見出した。また、このような吸収体を用いることによって、バッ クシートに不織布を使用することが可能となり、さらに通気性に優れ、ベたつきが無く 、肌触りの良好な多層吸収性衛生物品を提供できることを見出した。 [0005] The present inventors have discovered that by using a nonwoven fabric containing fibers containing a low melting point polymer and produced by a spunlace method as an absorbent material, it is possible to provide a multilayer absorbent sanitary article that does not retain moisture. Ta. In addition, by using such an absorber, the bag can be The present inventors have discovered that it is now possible to use a nonwoven fabric as a cushion sheet, and that it is also possible to provide a multilayer absorbent sanitary article that has excellent breathability, is non-sticky, and has a good texture.
[0006] 本発明は、以下の多層吸収性衛生物品を提供するものである。 [0006] The present invention provides the following multilayer absorbent sanitary article.
項 1.低融点ポリマーを含む繊維を含有し、スパンレース法によって製造されることを 特徴とする吸収体を含む、多層吸収性衛生物品。 Item 1. A multilayer absorbent sanitary article comprising an absorbent body characterized in that it contains fibers containing a low melting point polymer and is produced by the spunlacing method.
項 2.低融点ポリマーの融点が 160°C以下である、項 1に記載の多層吸収性衛生物 Po Item 2. The multilayer absorbent sanitary article according to Item 1, wherein the melting point of the low melting point polymer is 160°C or less.
項 3.低融点ポリマーが、変性ポリエチレンテレフタレート、ポリエチレン及びポリプロ ピレン力もなる群より選択される少なくともいずれか 1種である、項 1又は 2に記載の多 層吸収性衛生物品。 Item 3. The multilayer absorbent sanitary article according to item 1 or 2, wherein the low melting point polymer is at least one selected from the group consisting of modified polyethylene terephthalate, polyethylene, and polypropylene.
項 4.吸収体が芯鞘構造を有する繊維を含み、該繊維の鞘部分が低融点ポリマーで 構成されている、項 1〜3のいずれかに記載の多層吸収性衛生物品。 Item 4. The multilayer absorbent sanitary article according to any one of Items 1 to 3, wherein the absorbent body includes fibers having a core-sheath structure, and the sheath portion of the fibers is composed of a low melting point polymer.
項 5.さらに、不織布力もなるバックシートを備えた、項 1〜4のいずれかに記載の多 層吸収性衛生物品。 Item 5. The multilayer absorbent sanitary article according to any one of Items 1 to 4, further comprising a backsheet that also has nonwoven fabric properties.
項 6.前記不織布力もなるバックシートが、スパンボンド法によって製造された不織布 とメルトブロー法によって製造された不織布の積層物である、項 5に記載の多層吸収 性衛生物品。 Item 6. The multilayer absorbent sanitary article according to item 5, wherein the backsheet, which also serves as a nonwoven fabric, is a laminate of a nonwoven fabric produced by a spunbond method and a nonwoven fabric produced by a melt blow method.
項 7.前記不織布からなるバックシートが SMMS (スパンボンド Zメルトブロー Zメルト ブロー Zスパンボンド）によって製造されたバックシートである、項 6に記載の多層吸 収性衛生物品。 Item 7. The multilayer absorbent sanitary article according to Item 6, wherein the backsheet made of the nonwoven fabric is a backsheet manufactured by SMMS (Spunbond Z Melt Blown Z Melt Blown Z Spunbond).
項 8.おりものシート、汗とりパッド又は尿漏れパッドである、項 1〜7のいずれかに記 載の多層吸収性衛生物品。 Item 8. The multilayer absorbent sanitary article according to any of Items 1 to 7, which is a vaginal discharge sheet, a sweat pad, or an incontinence pad.
発明の効果 Effect of the invention
[0007] 本発明の多層吸収性衛生物品は、スパンレース法によって製造された不織布を吸 収体に用いる。スパンレース法によって製造された不織布は、繊維が平面方向に寝 た状態で存在するため、吸収された体液等の水分が速やかに拡散される。また、吸 収体における繊維間の空隙が少ないため、吸収体に保持される水分のほとんどが繊 維中に吸収される。よって、本発明の多層吸収性衛生物品によれば、本衛生物品着 用時に圧が力かった場合にも、吸収体の繊維中に水分が保持されるため、水分の逆 戻りがなぐ使用時にベたつき等の不快感を生じることがない。 [0007] The multilayer absorbent sanitary article of the present invention uses a nonwoven fabric produced by a spunlace method as an absorbent body. In nonwoven fabrics manufactured by the spunlace method, the fibers lie flat in the plane, so absorbed moisture such as body fluids quickly diffuses. Additionally, since there are few voids between the fibers in the absorber, most of the moisture retained in the absorber is absorbed into the fibers. Therefore, according to the multilayer absorbent sanitary article of the present invention, the present sanitary article garment Even if pressure is applied during use, moisture is retained in the fibers of the absorbent material, so moisture does not return and discomfort such as stickiness does not occur during use.
[0008] また、上記スパンレース法によって製造された不織布に低融点ポリマーを含有させ ることによって、使用時の体の動き等による繊維の毛羽立ちを抑制することができる。 これにより、吸収体の繊維間の空隙が少ない状態を維持することでき、持続的に逆戻 りを防止できる。 [0008] Furthermore, by incorporating a low melting point polymer into the nonwoven fabric produced by the spunlace method, it is possible to suppress the fuzzing of the fibers due to body movements during use. As a result, it is possible to maintain a state in which there are few voids between the fibers of the absorbent body, and it is possible to continuously prevent relapse.
[0009] さらに、本発明においては、吸収体の繊維中に水分が保持されることから、ノ ックシ 一トに不織布を使用することができる。よって、さらに優れた通気性を有し、ベたつき 力 り一層改善された肌触りが良好な、多層吸収性衛生物品を提供することができる [0009] Furthermore, in the present invention, since moisture is retained in the fibers of the absorbent body, a nonwoven fabric can be used for the knock sheet. Therefore, it is possible to provide a multilayer absorbent sanitary article that has even better breathability, improved stickiness, and a better feel to the skin.
[0010] 本発明にお 、ては、スパンレース法によって製造された低融点ポリマーを含む繊維 を含有する不織布を使用することから、吸収体の厚みを小さくすることができ、非常に 薄ぐ使用感に優れた多層吸収性衛生物品を提供することができる。 [0010] In the present invention, since a nonwoven fabric containing fibers containing a low melting point polymer produced by the spunlace method is used, the thickness of the absorbent body can be reduced, and it can be used very thinly. A multilayer absorbent sanitary article with excellent feel can be provided.
発明を実施するための最良の形態 BEST MODE FOR CARRYING OUT THE INVENTION
[0011] 本発明の多層吸収性衛生物品は、表面シートとバックシートが、間に吸収体を挟ん で積層されてなる、多層構造を有する。 [0011] The multilayer absorbent sanitary article of the present invention has a multilayer structure in which a top sheet and a back sheet are laminated with an absorbent body sandwiched therebetween.
[0012] (1)吸収体 [0012] (1) Absorber
本発明の多層吸収性衛生物品を構成する吸収体は、低融点ポリマーを含む繊維 を含有し、スパンレース法によって製造されることを特徴とするものである。 The absorbent body constituting the multilayer absorbent sanitary article of the present invention is characterized in that it contains fibers containing a low melting point polymer and is manufactured by a spunlace method.
[0013] 低融点ポリマーを含む繊維 [0013] Fiber containing low melting point polymer
本発明において低融点ポリマーを含む繊維とは、融点が約 160°C以下、好ましくは 約 140°C以下、より好ましくは約 130°C以下、さらに好ましくは約 120°C以下のポリマ 一を含む繊維を指す。本発明において使用される低融点ポリマーは、このような融点 を有するポリマーであれば特に限定されず、例えば、変性ポリエチレンテレフタレート (変性 PET)、共重合ポリエチレンテレフタレート（共重合 PET)等、共重合ナイロン等 、ポリエチレン（PE)、ポリプロピレン（PP)等のポリオレフイン系榭脂等が挙げられ、 好ましくは変性 PET、 PE、 PP等である。本発明においては、これらのポリマーのうち 1種単独からなる繊維を用いてもよぐ 2種以上のポリマーを組み合わせてなる低融 点ポリマーを含む繊維として使用することもできる。 In the present invention, the fiber containing a low melting point polymer includes a polymer having a melting point of about 160°C or less, preferably about 140°C or less, more preferably about 130°C or less, and even more preferably about 120°C or less. Refers to fiber. The low melting point polymer used in the present invention is not particularly limited as long as it has such a melting point, and examples thereof include modified polyethylene terephthalate (modified PET), copolymerized polyethylene terephthalate (copolymerized PET), and copolymerized nylon. Examples include polyolefin-based resins such as polyethylene (PE) and polypropylene (PP), with modified PET, PE, PP and the like being preferred. In the present invention, fibers made of one type of these polymers alone may be used, or fibers made of a combination of two or more types of polymers can be used. It can also be used as a fiber containing point polymers.
[0014] また、低融点ポリマーを含む繊維として、鞘部分が低融点ポリマーで構成されて 、 る芯鞘構造を有する繊維を用いた吸収体を、本発明の多層吸収性衛生物品に使用 することができる。このような繊維としては、従来公知のものを用いることができ、特に 限定されないが、例えば、ポリエチレンテレフタレート（芯部分) Zポリエチレン (鞘部 分）、ポリエチレンテレフタレート（芯部分) Z変性ポリエチレンテレフタレート (鞘部分 )、ポリプロピレン (芯部分) zポリエチレン (鞘部分)等が挙げられ、好ましくはポリエ チレンテレフタレート（芯部分) zポリエチレン (鞘部分）、ポリエチレンテレフタレート（ 芯部分) Z変性ポリエチレンテレフタレート (鞘部分)である。 [0014] Further, as the fiber containing a low melting point polymer, an absorbent body using a fiber having a core-sheath structure in which the sheath portion is composed of a low melting point polymer can be used in the multilayer absorbent sanitary article of the present invention. Can be done. Conventionally known fibers can be used as such fibers, and are not particularly limited. (part), polypropylene (core part), polyethylene (sheath part), preferably polyethylene terephthalate (core part), polyethylene (sheath part), polyethylene terephthalate (core part), modified polyethylene terephthalate (sheath part). be.
[0015] 低融点ポリマーを含む繊維の含有量は、当該繊維を用いる従来品と同様、用いる 繊維の種類、所望の目的等に応じて適宜設定することができる。 [0015] The content of the fiber containing the low melting point polymer can be appropriately set depending on the type of fiber used, the desired purpose, etc., as in conventional products using the fiber.
[0016] 本発明においては、低融点ポリマーを、吸収体の総重量に対して、 10〜80重量％ 程度、好ましくは 20〜50重量％程度、より好ましくは 30〜40重量％程度含有させる ことが望ましい。 [0016] In the present invention, the low melting point polymer is contained in an amount of about 10 to 80% by weight, preferably about 20 to 50% by weight, more preferably about 30 to 40% by weight, based on the total weight of the absorber. is desirable.
[0017] また例えば、低融点ポリマーを含む繊維の種類によっては吸収体の総重量に対し て 20重量％未満の範囲、例えば 5〜9重量％程度に設定することもできる。 [0017] For example, depending on the type of fiber containing the low melting point polymer, it can be set in a range of less than 20% by weight, for example, about 5 to 9% by weight, based on the total weight of the absorbent body.
[0018] の [0018]
本発明の多層吸収性衛生物品を構成する吸収体は、上記の低融点ポリマーを含 む繊維と、従来公知の吸収性を有する素材を組み合わせ、交絡させて構成される。 吸収性を有する素材としては、好ましくは、吸収性繊維が挙げられ、低融点ポリマー よりも高 、融点を有するものであれば特に限定されな 、。 The absorbent body constituting the multilayer absorbent sanitary article of the present invention is constructed by combining and intertwining the fibers containing the above-mentioned low melting point polymer with conventionally known absorbent materials. The absorbent material is preferably an absorbent fiber, and is not particularly limited as long as it has a melting point higher than that of a low melting point polymer.
[0019] 吸水性繊維としては、綿、羊毛、麻などの天然繊維；或いはレーヨン繊維、ァセテ一 ト繊維等の半合成繊維;及び各種繊維の混紡品ゃ混繊品が挙げられる。吸収体の 水分保持力を高めるためには、好ましくはレーヨン繊維、パルプ繊維等のセルロース 系繊維等を含有させることが望まし 、。 [0019] Examples of water-absorbing fibers include natural fibers such as cotton, wool, and hemp; semi-synthetic fibers such as rayon fiber and acetate fiber; and blends and blends of various fibers. In order to increase the water retention capacity of the absorbent body, it is desirable to contain cellulose fibers such as rayon fibers and pulp fibers.
[0020] また、上記の低融点ポリマーを含む繊維及び吸収性繊維に、必要に応じて、吸収 性ポリマー、吸収性パルプ等を組み合わせて吸収体を製造することもできる。これら の素材も、低融点ポリマーよりも高 、融点を有して 、るものが望ま 、。 [0021] 吸水性ポリマーとしては、例えば、アクリル酸 ビュルアルコール系共重合体、ァク リルアミド系ポリマー、バイオコポリマー等が挙げられる。 [0020] Furthermore, an absorbent body can be manufactured by combining the above-mentioned fibers containing a low melting point polymer and absorbent fibers with an absorbent polymer, absorbent pulp, etc., as necessary. These materials also desirably have a higher melting point than the low melting point polymer. [0021] Examples of the water-absorbing polymer include acrylic acid-butyl alcohol-based copolymers, acrylamide-based polymers, and biocopolymers.
[0022] これらの合成繊維は、その断面構造等によって特に制限されず、異形断面繊維、 多孔性繊維、多孔吸水繊維等で代表されるような各種構造を有するものであってもよ い。 [0022] These synthetic fibers are not particularly limited by their cross-sectional structure, and may have various structures such as irregular cross-sectional fibers, porous fibers, porous water-absorbing fibers, and the like.
[0023] また、各繊維の配合割合は、本発明の効果を達成するものであれば特に限定され ず、低融点ポリマーの配合割合に応じて適宜設定され得る。 [0023] Furthermore, the blending ratio of each fiber is not particularly limited as long as it achieves the effects of the present invention, and can be appropriately set according to the blending ratio of the low melting point polymer.
[0024] さらに、低融点ポリマーを含む繊維又は吸収性繊維に、必要に応じて不織布活性 炭、シリカゲル、消臭剤、香料等を、含浸、繊維に練り込む等の方法によって添加す ることもできる。また、吸収体に色素等を用いて印刷、塗布等を行っても良い。 [0024] Furthermore, nonwoven activated carbon, silica gel, deodorants, fragrances, etc. may be added to fibers containing low melting point polymers or absorbent fibers as necessary by methods such as impregnation or kneading into the fibers. can. Further, printing, coating, etc. may be performed using a dye or the like on the absorber.
[0025] 本発明においては、上記の吸収性を有する素材及び低融点ポリマーを含む繊維に よって構成された不織布を、吸収体として使用する。本発明において吸収体として用 いられる不織布は、スパンレース法によって製造される。スパンレース法は、高速ジェ ット水流を利用し、繊維どうしを互いに交絡させることによって不織布を製造する方法 である (例えば「不織布の製造と応用」中村義男編集 株式会社シーエムシー発行） 。スパンレース法では、水流を利用して繊維を交絡させるために、通常、乾燥工程（ 一般に約 100〜160°C。低融点ポリマーを含有する場合は、約 120〜160°Cが好ま しい）が必要とされる。 [0025] In the present invention, a nonwoven fabric made of the above-mentioned absorbent material and fibers containing a low melting point polymer is used as an absorbent body. The nonwoven fabric used as the absorbent material in the present invention is manufactured by a spunlace method. The spunlace method is a method of manufacturing nonwoven fabrics by intertwining fibers with each other using high-speed water jets (for example, ``Production and Applications of Nonwoven Fabrics'' edited by Yoshio Nakamura, published by CMC Corporation). In the spunlace method, a drying step (generally about 100 to 160°C, preferably about 120 to 160°C when containing low melting point polymers) is used to entangle the fibers using a water stream. Needed.
[0026] 本発明にお 、ては、スパンレース法によって製造された不織布は、吸収体における 繊維が平面方向に寝た状態で存在するため、吸収された体液等の水分は速やかに 拡散される。また、吸収体における繊維間の空隙が少ないため、吸収体に保持され る水分はほとんどが繊維中に吸収される。 [0026] In the present invention, since the nonwoven fabric manufactured by the spunlace method has fibers in the absorbent body lying in a plane direction, absorbed water such as body fluids is quickly diffused. . Additionally, since there are few voids between the fibers in the absorber, most of the moisture retained in the absorber is absorbed into the fibers.
[0027] さらに、低融点ポリマーと吸収性繊維を組み合わせて用い、スパンレース法によつ て不織布を製造することによって、上記乾燥工程において低融点ポリマーが融解し、 繊維間の空隙が少ない状態を維持することができる。よって、本発明の多層吸収性 衛生物品によれば、本衛生物品着用時に圧が力かった場合にも水分が吸収体の繊 維中に保持され、使用時にベたつき等の不快感を生じない。また、使用時の動きな どでも毛羽がたつことなぐ持続的に繊維間の空隙を小さく保つことができ、水分の 逆戻りを防止できる。 [0027] Furthermore, by manufacturing a nonwoven fabric using a spunlace method using a combination of a low melting point polymer and absorbent fibers, the low melting point polymer melts in the drying process, creating a state in which there are few voids between the fibers. can be maintained. Therefore, according to the multilayer absorbent sanitary article of the present invention, even when pressure is applied when wearing the sanitary article, water is retained in the fibers of the absorbent body, causing discomfort such as stickiness during use. do not have. In addition, the voids between the fibers can be kept small without fuzzing even when the fabric is moved during use, allowing moisture to escape. It can prevent relapse.
[0028] さらに、本発明においては、水分が吸収体の繊維中に保持されることから、ノ ックシ 一トに不織布を使用することができる。よって、さらに優れた通気性を有し、ベたつき 力 り一層改善された肌触りが良好な、多層吸収性衛生物品を提供することができる [0028] Furthermore, in the present invention, since moisture is retained in the fibers of the absorbent body, a nonwoven fabric can be used for the knock sheet. Therefore, it is possible to provide a multilayer absorbent sanitary article that has even better breathability, improved stickiness, and a better feel to the skin.
[0029] 本発明において使用される吸収体の厚みとしては、特に限定されないが、通常、 0 . 5〜2mm程度、好ましくは 0. 6〜1. 5mm程度、より好ましくは 0. 7〜1. 2mm程度 である。 [0029] The thickness of the absorbent body used in the present invention is not particularly limited, but is usually about 0.5 to 2 mm, preferably about 0.6 to 1.5 mm, and more preferably 0.7 to 1.5 mm. It is about 2mm.
[0030] 上述のように、スパンレース製法にお 、て水流で繊維を交絡させることによって繊 維が圧縮され、線維間の空隙が減り、乾燥工程において低融点ポリマーが融解する ことによって繊維が圧縮された状態で固定される。従って、本発明においては、吸収 体の厚みを小さくすることができる。 [0030] As mentioned above, in the spunlace manufacturing method, the fibers are entangled with water flow, which compresses the fibers, reducing the voids between the fibers, and the low melting point polymer melts in the drying process, which compresses the fibers. It will be fixed in the same state. Therefore, in the present invention, the thickness of the absorber can be reduced.
[0031] また、本発明において使用される吸収体の目付け (生地 lm2当たりの重さ）は、適 度な吸収力と耐水性、使用感の良さを保っために、 10〜： LOOg程度、好ましくは 30 〜80g程度、より好ましくは 40〜60g程度であることが望まし 、。 [0031] In addition, the basis weight (weight per fabric lm 2 ) of the absorbent material used in the present invention is 10~: about LOOg, in order to maintain appropriate absorbency, water resistance, and good feeling of use. The amount is preferably about 30 to 80 g, more preferably about 40 to 60 g.
[0032] (2)バックシート [0032] (2) Back sheet
本発明の多層吸収性衛生物品において使用されるノ ックシートは、吸収された体 液等の水分が裏抜けしな 、ように液バリア性を有するシート状又はフィルム状のもの であれば特に制限されな!、が、透湿性及び通気性を有するものであることが好ま ヽ 。このようなバックシートの素材としては、通常使用されるものが広く採用され、疎水性 の素材であることが望ましい。疎水性の素材としては、例えば、ポリエチレン、ポリプロ ピレン等のポリオレフイン、ポリエステル、ナイロン、ポリビニルアルコール、ポリスチレ ン、ポリ塩ィ匕ビユリデン等もしくはこれらの多層フィルムが例示される。 The knock sheet used in the multilayer absorbent sanitary article of the present invention is not particularly limited as long as it is in the form of a sheet or film that has liquid barrier properties so that absorbed body fluids and other moisture do not bleed through. It is preferable that the material has moisture permeability and air permeability. Commonly used materials are widely used for such backsheet materials, and hydrophobic materials are preferred. Examples of the hydrophobic material include polyolefins such as polyethylene and polypropylene, polyester, nylon, polyvinyl alcohol, polystyrene, polysilicon, and multilayer films thereof.
[0033] また、本発明の多層吸収性衛生物品のバックシートとして、不織布を用いることもで きる。例えば、従来のおりものシート等においては、ノ ックシートに不織布を用いると、 体圧が力かることによって、吸収されたおりもの等の体液が裏抜けするという問題があ つた。これに対し、本発明の多層吸収性衛生物品は、上記（1)に記載されるような吸 収体を用いることによって、吸収体の水分の保持力が高められている。従って、本発 明においては、ノ ックシートに不織布を使用しても、体液等の水分が裏抜けすること がない。また、ノックシートに不織布を使用することにより、本発明の多層吸収性衛生 物品の通気性がさらに向上する。 [0033] Furthermore, a nonwoven fabric can also be used as the backsheet of the multilayer absorbent sanitary article of the present invention. For example, in conventional vaginal discharge sheets, etc., when a nonwoven fabric is used for the knock sheet, there is a problem in that absorbed body fluids such as vaginal discharge seep through due to body pressure. On the other hand, in the multilayer absorbent sanitary article of the present invention, the moisture retention ability of the absorbent body is increased by using the absorbent body as described in (1) above. Therefore, the original In bright light, even if a nonwoven fabric is used for the knock sheet, moisture such as body fluids will not bleed through. Furthermore, by using a nonwoven fabric for the knock sheet, the breathability of the multilayer absorbent sanitary article of the present invention is further improved.
[0034] ノ ックシートに用いられる不織布としては、上記の疎水性の素材で構成されている ものを使用することができる。また、本発明の効果を損なわない限りにおいて、不織 布の製造方法は特に限定されないが、好ましくはスパンボンド法によって製造された 不織布とメルトブロー法によって製造された不織布を 2層以上、より好ましくは 4層以 上積層させたものを用いることが望ましい。このような不織布としては、例えば、 SMM S (スパンボンド Zメルトブロー Zメルトブロー Zスパンボンド）や SM (スパンボンド Zメ ルトブロー）、 SMS (スパンボンド Zメルトブロー Zスパンボンド）等があげられる。 [0034] As the nonwoven fabric used for the knock sheet, one made of the above-mentioned hydrophobic material can be used. The method for producing the nonwoven fabric is not particularly limited as long as it does not impair the effects of the present invention, but it is preferable to use two or more layers of a nonwoven fabric produced by a spunbond method and a nonwoven fabric produced by a melt blow method, more preferably It is desirable to use a stack of four or more layers. Examples of such nonwoven fabrics include SMM S (spunbond, Z-melt-blown, Z-spunbond), SM (spun-bond, Z-melt-blown), and SMS (spunbond, Z-melt-blown, Z-spunbond).
[0035] 本発明において使用されるバックシートの厚みとしては、特に限定されないが、通 常、 0. 05〜： Lmm程度、好ましく ίま 0. 1〜0. 6mm程度、より好ましく ίま 0. 2〜0. 4 mmfe度で [0035] The thickness of the backsheet used in the present invention is not particularly limited, but is usually about 0.05 mm to about L mm, preferably about 0.1 to 0.6 mm, more preferably about 0.0 mm. 2~0.4 mmfe degree
[0036] また本発明において使用されるバックシートの目付けとしては、特に限定されない 力 通常 10g〜60g程度、好ましくは 20g〜50g程度、より好ましくは 25g〜45g程度 である。 [0036] The basis weight of the backsheet used in the present invention is not particularly limited, and is usually about 10 g to 60 g, preferably about 20 g to 50 g, more preferably about 25 g to 45 g.
[0037] (3)表面シート [0037] (3) Surface sheet
本発明において表面シートは、局部（陰唇部、膣口等)や腋下等の身体に直接接 触し、おりものや汗等の体液を通過させて、下層の吸収体に浸透するように透過性を 有しているものを指す。その限りにおいて、構成する素材の種類やシートの構造など を特に制限するものではない。このような表面シートを構成し得る素材としては、例え ば、ポリエステル繊維、ポリアミド繊維、アクリル繊維、ポリプロピレン、ポリエチレン Z ポリエステル複合繊維、ポリエチレン Zポリプロピレン複合繊維等の合成繊維;綿、羊 毛、麻などの天然繊維;あるいはレーヨン繊維、アセテート繊維等の半合成繊維;及 び各種繊維の混紡品や混繊品を挙げることができる。よりさらつとした表面を保った めに、好ましくは合繊繊維である。シートの構造も特に制限されず、織物、編物、不織 布 (非収束状のフィラメント群や短繊維群から構成される不織布を含む。）、フェルトな どを挙げることができる。なかでも、弾性や柔軟性を備えることから、好ましくは不織布 である。表面シートに用いられる不織布の製造方法は、特に限定されず、従来公知 の方法に従って製造され得る。また、表面シートは、体液等の水分の透過性を高める ためにメッシュ状等の多孔構造を有して 、てもよく、肌への接触感を良くするために エンボスカ卩ェ等によって、表面に凹凸が形成されていてもよい。 In the present invention, the top sheet is in direct contact with the body such as the private parts (labia, vaginal opening, etc.) and underarms, and has a permeable structure that allows body fluids such as vaginal discharge and sweat to pass through and penetrate into the absorbent layer below. Refers to something that has sex. To that extent, there are no particular restrictions on the type of constituent materials or the structure of the sheet. Materials that can constitute such a top sheet include, for example, synthetic fibers such as polyester fiber, polyamide fiber, acrylic fiber, polypropylene, polyethylene Z polyester composite fiber, and polyethylene Z polypropylene composite fiber; cotton, wool, linen, etc. natural fibers; or semi-synthetic fibers such as rayon fibers and acetate fibers; and blends and blends of various fibers. Synthetic fibers are preferred to maintain a smoother surface. The structure of the sheet is not particularly limited, and examples include woven fabrics, knitted fabrics, nonwoven fabrics (including nonwoven fabrics composed of non-converging filaments and short fibers), felt, and the like. Among these, non-woven fabrics are preferred due to their elasticity and flexibility. It is. The method for manufacturing the nonwoven fabric used for the topsheet is not particularly limited, and can be manufactured according to conventionally known methods. Further, the top sheet may have a porous structure such as a mesh structure to increase the permeability of water such as body fluids, and the surface may be embossed with an embossed layer or the like to improve the feeling of contact with the skin. Unevenness may be formed.
[0038] 本発明において使用される表面シートの厚みとしては、特に限定されないが、通常 、 0. 05〜： Lmm程度、好ましく ίま 0. 1〜0. 6mm程度、より好ましく ίま 0. 2〜0. 4mm 程度である。 [0038] The thickness of the top sheet used in the present invention is not particularly limited, but is usually about 0.05 to Lmm, preferably about 0.1 to 0.6 mm, more preferably about 0.2 mm. ~0.4mm.
[0039] (4)多層吸収性衛生物品 [0039] (4) Multilayer absorbent sanitary article
本発明の多層吸収性衛生物品は、本発明の効果を損なわない限りにおいて、その 製法は特に限定されず、従来公知の方法を使用して製造される。製造方法としては 、例えば、ノ ックシートと表面シートを、間に吸収体を挟んで積層し、これらの層を接 着剤などで接着後外周部分を熱圧着し、所望の形状に沿ってシートを打ち抜き切断 する方法が挙げられる。また、バックシート、吸収体及び表面シート間、バックシート 下面等に、さらに他の成分力 なる層を有していてもよぐ例えば、バックシートの下 面 (すなわち、下着や衣類への接着面）に粘着層を有し、さらにこれに剥離紙、包装 用シート等を有していてもよい。粘着層には、従来公知の接着剤を用いることができ る。 The manufacturing method of the multilayer absorbent sanitary article of the present invention is not particularly limited as long as the effects of the present invention are not impaired, and the multilayer absorbent sanitary article can be manufactured using a conventionally known method. For example, the manufacturing method is to laminate a knock sheet and a top sheet with an absorbent material in between, bond these layers with adhesive, heat-press the outer periphery, and then shape the sheet into the desired shape. One method is punching and cutting. In addition, there may be other layers between the backsheet, the absorbent body and the topsheet, or on the underside of the backsheet. ) has an adhesive layer, and may further include a release paper, a packaging sheet, etc. A conventionally known adhesive can be used for the adhesive layer.
[0040] この様な多層吸収性衛生物品は、おりものシート、汗とりパッド、尿漏れパッド等に 適用され得る。 [0040] Such multilayer absorbent sanitary articles can be applied to vaginal discharge sheets, sweat pads, urine leakage pads, and the like.
[0041] 本発明の多層吸収性衛生物品は、本発明の効果を損なわないものであれば、形状 は特に限定されないが、本発明の多層吸収性衛生物品力 おりものシート又は尿漏 れパッドとして使用される場合は、例えば、小型の長方形又は略長方形を有するもの が好ましい。長方形とは、全ての頂角が直角で、一辺が隣接する他辺よりも長ぐ且 つ対向する辺の長さが等しい四角形をいう。略長方形とは、長方形の特徴である横 長（あるいは縦長）の形状を有するものであり、例えば、楕円形、紡錘形、ひょうたん 形、台形 (縦長の台形)等の形状が挙げられる。 [0041] The shape of the multilayer absorbent sanitary article of the present invention is not particularly limited as long as it does not impair the effects of the present invention. When used, for example, one having a small rectangular shape or a substantially rectangular shape is preferable. A rectangle is a quadrilateral with all right angles, one side longer than the other adjacent side, and opposite sides of equal length. A substantially rectangular shape is one that has a horizontally long (or vertically long) shape, which is a characteristic of a rectangle, and includes, for example, an ellipse, a spindle shape, a gourd shape, and a trapezoid (a vertically long trapezoid).
[0042] また、本発明の多層吸収性衛生物品が、汗とりパッドとして使用される場合は、例え ば、円形、楕円形、ひょうたん型、それらを組み合わせたもの等が挙げられる。 [0043] 本発明の多層吸収性衛生物品は、通常、おりものシート、汗とりパッド、尿漏れパッ ド等において適用される範囲のサイズで用いることができ、用途に応じて適宜設定さ れ得る。 [0042] When the multilayer absorbent sanitary article of the present invention is used as a sweat pad, examples thereof include circular, oval, gourd-shaped, and combinations thereof. [0043] The multilayer absorbent sanitary article of the present invention can be used in a size range that is normally applied to vaginal discharge sheets, sweat pads, urine leakage pads, etc., and can be set as appropriate depending on the purpose. .
[0044] 本発明の多層吸収性衛生物品全体の厚みとしては、本発明の効果を達成できる範 囲であれば特に限定されないが、例えば、 0. 6〜3mm程度、好ましくは 0. 8〜2. 7 mm程度、より好ましくは 1. l〜2mm程度である。 [0044] The overall thickness of the multilayer absorbent sanitary article of the present invention is not particularly limited as long as it can achieve the effects of the present invention, but is, for example, about 0.6 to 3 mm, preferably 0.8 to 2 mm. It is about 7 mm, more preferably about 1.1 to 2 mm.
実施例 Example
[0045] 以下、実施例及び実験例を挙げて本発明をより詳細に説明するが、本発明はこれ らの実施例及び実験例に限定されな 、。 [0045] Hereinafter, the present invention will be explained in more detail with reference to Examples and Experimental Examples, but the present invention is not limited to these Examples and Experimental Examples.
[0046] ¾施例及び比1^列 [0046] ¾Example and ratio 1^ column
下記表 1に示す組成及び方法に従って吸収体及びバックシートを製造した。 PET、 An absorber and a backsheet were manufactured according to the composition and method shown in Table 1 below. PET,
PP、 PPZPE力もなる表面シートとバックシートの間に吸収体を挟んで積層し、接着 剤で接着後、外周部を熱圧着して打ち抜き、実施例 1及び比較例 1〜3のおりものシ ートを得た。 The absorbent material was sandwiched and laminated between the PP and PPZPE top sheet and back sheet, and after bonding with adhesive, the outer periphery was thermocompressed and punched out to form the vaginal discharge sheets of Example 1 and Comparative Examples 1 to 3. I got it.
[0047] [表 1] [0047] [Table 1]
吸収体 バックシー卜 Absorber back sheet
製造方法 組成 製造方法 組成 実施例 1 レーヨン 60% S MM S P P Manufacturing method Composition Manufacturing method Composition Example 1 Rayon 60% S MM S P P
PET 20% 30 g PET 20% 30g
スパンレース法 spunlace method
PET/PE 20% PET/PE 20%
目付 60g Weight: 60g
比較例 1 パルプ 50¾ フィルム P E Comparative example 1 Pulp 50¾ Film P E
PET/PE 30¾ 30 g PET/PE 30¾ 30 g
サ一マルボンド法 thermal bond method
PP/PE 20¾ PP/PE 20¾
目付 50g Weight: 50g
比較例 2 レーヨン 80% S MM S P P Comparative example 2 Rayon 80% S MM S P P
ニードルパンチ法 PET/PE 20¾ 30 g Needle punch method PET/PE 20¾ 30 g
目付 80g Weight: 80g
比較例 3 パルプ 40¾ S MM S P P Comparative example 3 Pulp 40¾ S MM S P P
レーヨン 10% 30 g Rayon 10% 30 g
エアレイド法 air raid method
PET/PE 50¾ PET/PE 50¾
目付 50g Weight: 50g
PET：ポリエチレンテレフタレート PET: Polyethylene terephthalate
PP：ポリプロピレン PP: Polypropylene
PE：ポリエチレン PE: polyethylene
PET/PE：ポリエチレンテレフ夕レート （芯部分） /ポリエチレン （鞘部分) PP/PE：ポリプロピレン （芯部分） /ポリエチレン （鞘部分） PET/PE: Polyethylene terephthalate (core) / polyethylene (sheath) PP/PE: polypropylene (core) / polyethylene (sheath)
[0048] 実験例 1 [0048] Experimental example 1
(1)透湿性 (1) Moisture permeability
透湿性の測定は、 JIS L 1099に従い、実施例 1及び比較例 1〜3のおりものシー トにおいて、 1cm2あたりの 1時間に通過する水の量 (g)を求めた。値が大きい程、透 湿性が高いことを表す。 Moisture permeability was measured according to JIS L 1099 by determining the amount of water (g) that passes per hour per 1 cm 2 in the vaginal discharge sheets of Example 1 and Comparative Examples 1 to 3. The higher the value, the higher the moisture permeability.
[0049] (2)通気性 [0049] (2) Breathability
通気性の測定は、 JIS L 1096に従い、実施例 1及び比較例 1〜3のおりものシー トを通過する空気量 (cm3Zcm2)を求めた。値が大きい程、通気性が高いことを表す The air permeability was measured according to JIS L 1096 by determining the amount of air (cm 3 Zcm 2 ) passing through the vaginal discharge sheets of Example 1 and Comparative Examples 1 to 3. The higher the value, the higher the breathability.
[0050] (3)水分の逆戻り [0050] (3) Moisture return
実施例 1及び比較例 1〜3のおりものシートにおける水分の逆戻りを、以下の方法 に従って試験を行った。 1.表 1に示される吸収体及びバックシートを備えたおりものシートを作製し、総吸収 量が約 1. 3gになる面積にカットした。 The return of moisture in the vaginal discharge sheets of Example 1 and Comparative Examples 1 to 3 was tested according to the following method. 1. A vaginal discharge sheet with the absorbent body and backsheet shown in Table 1 was prepared and cut into an area with a total absorption of approximately 1.3 g.
2.上記 1.でカットしたシートに、 0. 5mlの水を吸収させて 1分間放置した後、重量を 測定した濾紙を各シートの上にのせ、さらに 1. 2kgの錘を載せた。 2. The sheets cut in 1. above were allowed to absorb 0.5 ml of water and left to stand for 1 minute, then a weighed filter paper was placed on top of each sheet, and a 1.2 kg weight was also placed on top of each sheet.
3. 1分後、濾紙の重量を測定し、濾紙に吸収された水分量 (すなわち、逆戻り量)を パーセンテージで算出した。値が大きい程、逆戻り量が多いことを表す。 3. After 1 minute, the weight of the filter paper was measured and the amount of water absorbed by the filter paper (i.e., the amount of water recirculated) was calculated as a percentage. The larger the value, the larger the amount of reversal.
[0051] (4)接触冷感 [0051] (4) Cool touch sensation
実施例 1及び比較例 1〜3のおりものシートの接触冷感について、サーモラボ 11型（ KATO TECH CO.,LTD.)を用い、以下の方法に従って試験を行った。接触冷感とは 、濡れた物に触れた時に冷たく感じる感覚を指す。 The cool contact sensation of the vaginal discharge sheets of Example 1 and Comparative Examples 1 to 3 was tested using a Thermolab Model 11 (KATO TECH CO., LTD.) according to the following method. Cold sensation refers to the feeling of coldness when touching a wet object.
1. BT- BOX (Bottom Temperature Box) (1)の温度を 25度（ショーツの外気温を想 定)に設定する。 1. Set the temperature of BT-BOX (Bottom Temperature Box) (1) to 25 degrees (assuming the outside temperature of the shorts).
2. T - BOX (Temperature Detecting Box)の温度を 32度（皮膚温を想定）になるよう 、 BT— BOX (2)で設定する。 2. Set the temperature of T-BOX (Temperature Detecting Box) to 32 degrees (assuming skin temperature) using BT-BOX (2).
3. 2 X 2cmにカットしたおりものシートの表面シート（肌に接する側）に 0. 5mlの水分 を吸収させ、 30秒後 ΒΤ—ΒΟΧ(1)上に、表面シートが上になるようにおく。 3. Absorb 0.5 ml of water on the top sheet (the side that contacts the skin) of a vaginal discharge sheet cut into 2 x 2 cm, and after 30 seconds, place it on ΒΤ—ΒΟΧ(1) with the top sheet facing up. put.
4.表面シート上に T— BOXを置き、 q— max値を測定する。 q— max値が大きいほど 、接触時に冷たく感じる。 4. Place the T-BOX on the top sheet and measure the q-max value. q—The larger the max value, the colder it feels when you touch it.
上記実験例 (1)〜(4)の結果を、表 2に示す。 The results of Experimental Examples (1) to (4) above are shown in Table 2.
[0052] [表 2] [0052] [Table 2]
透湿 通気性 逆戻り Moisture permeability breathability reverse
接触冷感 (qm) Coolness to touch (qm)
(g/m - h) (cm3/cm2, s) (%) 実施例 1 (g/m - h) (cm 3 /cm 2, s) (%) Example 1
486 28.8 24 0.124 486 28.8 24 0.124
比較例 1 Comparative example 1
348 0.1以下 84 0.58 348 0.1 or less 84 0.58
比較例 2 Comparative example 2
459 30.7 70 0.349 比較例 3 459 30.7 70 0.349 Comparative example 3
454 35.0 64 0.215 454 35.0 64 0.215
[0053] 実施例 1のおりものシートは、水分の逆戻りが極めて少なぐ接触冷感が低いだけ でなぐ透湿性が高ぐ通気性にも優れていることが示された。これに対し、比較例 2 ( 吸収体は、ニードルパンチ法によって製造される）は、レーヨン（吸収性繊維）、目付 量が多いにもかかわらず、水分の逆戻り量が多ぐ接触冷感も実施例 1に比べ劣って いることがわ力つた。また、比較例 1はバックシートにフィルムを用いているために通 気性が実施例 1に劣り、また逆戻りもある。さらに比較例 3でも、通気性の点では実施 例 1よりも優れている力 水分の逆戻りがあった。 [0053] The vaginal discharge sheet of Example 1 was shown not only to have extremely little moisture backflow and a low cool sensation to the touch, but also to have high moisture permeability and excellent air permeability. On the other hand, Comparative Example 2 (absorbent material manufactured by needle punching method) was made of rayon (absorbent fiber), and although it had a high basis weight, the amount of moisture returned was large and the contact cooling sensation was also tested. I realized that it was inferior to Example 1. In addition, since Comparative Example 1 uses a film for the backsheet, its breathability is inferior to that of Example 1, and there is also some reversal. Furthermore, even in Comparative Example 3, which was superior to Example 1 in terms of air permeability, moisture returned.
[0054] ,験 f列 2 (モュター 験) [0054] ,Experiment f sequence 2 (Motor experiment)
実施例 比較例 1〜3の 4サンプルを、総吸収量が 1. 3gになるような面積 (実施例 1 : 24cm2,比較例 1 : 12. 72cm2,比較例 2 : 8. 24cm2,比較例 3 : 6. 95cm2)に切 り、切ったサンプルに 0. 5mlの蒸留水を吸収させた。各サンプルに蒸留水を吸収さ せて 30秒後、被検者 12人 (女性）に手で触ってもらい、濡れていない順に 1点、 2点 、 3点、 4点とし、総得点を計算した。総得点の値力 、さい方が、濡れていない (ベた つきがない)ことを示す。結果を、下記表 3に示す。 Example Four samples of Comparative Examples 1 to 3 were placed in an area where the total absorbed amount was 1.3 g (Example 1: 24 cm 2 , Comparative Example 1: 12.72 cm 2 , Comparative Example 2: 8. 24 cm 2 , Comparative Example 3: The sample was cut into 6.95 cm 2 ) pieces and 0.5 ml of distilled water was absorbed into the cut sample. After 30 seconds of absorbing distilled water into each sample, 12 test subjects (female) were asked to touch it with their hands, giving them 1, 2, 3, and 4 points in descending order of wetness, and a total score was calculated. did. The value of the total score indicates that the material is not wet (not sticky). The results are shown in Table 3 below.
[0055] [表 3] サンプル 被験者 No. 実施例 1 比較例 1 比較例 2 比較例 3 [0055] [Table 3] Sample Subject No. Example 1 Comparative example 1 Comparative example 2 Comparative example 3
1 4 2 3 1 4 2 3
2 1 4 3 2 2 1 4 3 2
3 4 2 3 3 4 2 3
4 4 2 3 4 4 2 3
5 1 4 2 3 5 1 4 2 3
6 4 2 3 6 4 2 3
7 4 2 3 7 4 2 3
8 4 2 3 8 4 2 3
9 4 2 3 9 4 2 3
1 0 3 2 4 1 0 3 2 4
1 1 4 2 3 1 1 4 2 3
1 2 4 2 3 1 2 4 2 3
'ftfei守点 1 2点 47点 25点 36点 表 3より、モニター試験においても、実施例 1のおりものシート物品が最も濡れ (ベた つき）が少な 、ことが示された。 'ftfei score 1 2 points 47 points 25 points 36 points Table 3 shows that the vaginal discharge sheet article of Example 1 was the least wet (sticky) in the monitor test as well.

Claims

請求の範囲 The scope of the claims
[1] 低融点ポリマーを含む繊維を含有し、スパンレース法によって製造されることを特徴 とする吸収体を含む、多層吸収性衛生物品。 [1] A multilayer absorbent sanitary article comprising an absorbent body characterized by containing fibers containing a low melting point polymer and manufactured by a spunlace method.
[2] 低融点ポリマーの融点が 160°C以下である、請求項 1に記載の多層吸収性衛生物 [2] The multilayer absorbent sanitary article according to claim 1, wherein the melting point of the low melting point polymer is 160°C or less.
P P
PPo PPo
[3] 低融点ポリマーが、変性ポリエチレンテレフタレート、ポリエチレン及びポリプロピレ ンカもなる群より選択される少なくともいずれか 1種である、請求項 1又は 2に記載の 多層吸収性衛生物品。 [3] The multilayer absorbent sanitary article according to claim 1 or 2, wherein the low melting point polymer is at least one selected from the group consisting of modified polyethylene terephthalate, polyethylene, and polypropylene.
[4] 吸収体が芯鞘構造を有する繊維を含み、該繊維の鞘部分が低融点ポリマーで構 成されている、請求項 1〜3のいずれかに記載の多層吸収性衛生物品。 [4] The multilayer absorbent sanitary article according to any one of claims 1 to 3, wherein the absorbent body includes fibers having a core-sheath structure, and the sheath portion of the fibers is made of a low melting point polymer.
[5] さらに、不織布力もなるノ ックシートを備えた、請求項 1〜4のいずれかに記載の多 層吸収性衛生物品。 [5] The multilayer absorbent sanitary article according to any one of claims 1 to 4, further comprising a knock sheet having nonwoven fabric strength.
[6] 前記不織布力もなるバックシートが、スパンボンド法によって製造された不織布とメ ルトブロー法によって製造された不織布の積層物である、請求項 5に記載の多層吸 収性衛生物品。 [6] The multilayer absorbent sanitary article according to claim 5, wherein the backsheet, which also serves as a nonwoven fabric, is a laminate of a nonwoven fabric produced by a spunbond method and a nonwoven fabric produced by a melt blowing method.
[7] 前記不織布からなるバックシートが SMMS (スパンボンド Zメルトブロー Zメルトブロ 一 Zスパンボンド）によって製造されたバックシートである、請求項 6に記載の多層吸 収性衛生物品。 [7] The multilayer absorbent sanitary article according to claim 6, wherein the backsheet made of the nonwoven fabric is a backsheet manufactured by SMMS (Spunbond Z Melt Blown Z Spunbond).
[8] おりものシート、汗とりパッド又は尿漏れパッドである、請求項 1〜7のいずれかに記 載の多層吸収性衛生物品。 [8] The multilayer absorbent sanitary article according to any one of claims 1 to 7, which is a vaginal discharge sheet, a sweat absorbing pad, or an incontinence pad.
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* Cited by examiner, † Cited by third party
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JP2018110899A (en) * 2012-08-01 2018-07-19 スミス アンド ネフュー ピーエルシーＳｍｉｔｈ ＆ Ｎｅｐｈｅｗ Ｐｕｂｌｉｃ Ｌｉｍｉｔｅｄ Ｃｏｍｐａｎｙ Wound dressing material
CN110325679A (en) * 2017-03-15 2019-10-11 花王株式会社 Non-woven fabrics and its manufacturing method and absorbent commodity and absorbing sweat piece is laminated
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US11701263B2 (en) 2006-09-26 2023-07-18 Smith & Nephew, Inc. Wound dressing
US11357903B2 (en) 2009-02-13 2022-06-14 Smith & Nephew Plc Wound packing
US11484443B2 (en) 2010-02-26 2022-11-01 Smith & Nephew, Inc. Systems and methods for using negative pressure wound therapy to manage open abdominal wounds
US11590029B2 (en) 2012-05-23 2023-02-28 Smith & Nephew Plc Apparatuses and methods for negative pressure wound therapy
US10507141B2 (en) 2012-05-23 2019-12-17 Smith & Nephew Plc Apparatuses and methods for negative pressure wound therapy
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JP2018110899A (en) * 2012-08-01 2018-07-19 スミス アンド ネフュー ピーエルシーＳｍｉｔｈ ＆ Ｎｅｐｈｅｗ Ｐｕｂｌｉｃ Ｌｉｍｉｔｅｄ Ｃｏｍｐａｎｙ Wound dressing material
US11801338B2 (en) 2012-08-01 2023-10-31 Smith & Nephew Plc Wound dressing and method of treatment
US11864981B2 (en) 2012-08-01 2024-01-09 Smith & Nephew Plc Wound dressing and method of treatment
US11771796B2 (en) 2013-03-15 2023-10-03 Smith & Nephew Plc Wound dressing and method of treatment
CN110325679A (en) * 2017-03-15 2019-10-11 花王株式会社 Non-woven fabrics and its manufacturing method and absorbent commodity and absorbing sweat piece is laminated
US11554051B2 (en) 2017-06-30 2023-01-17 T.J. Smith And Nephew, Limited Negative pressure wound therapy apparatus

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