JP2003213558A - Composite sheet and wiping member using the same - Google Patents

Composite sheet and wiping member using the same

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Publication number
JP2003213558A
JP2003213558A JP2002178564A JP2002178564A JP2003213558A JP 2003213558 A JP2003213558 A JP 2003213558A JP 2002178564 A JP2002178564 A JP 2002178564A JP 2002178564 A JP2002178564 A JP 2002178564A JP 2003213558 A JP2003213558 A JP 2003213558A
Authority
JP
Japan
Prior art keywords
composite sheet
regenerated cellulose
nonwoven fabric
weight
alcohol
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
JP2002178564A
Other languages
Japanese (ja)
Inventor
Satoshi Hiraga
平賀　　敏
Seiji Suzuki
成治 鈴木
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Asahi Kasei Corp
Original Assignee
Asahi Kasei Corp
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 Asahi Kasei Corp filed Critical Asahi Kasei Corp
Priority to JP2002178564A priority Critical patent/JP2003213558A/en
Publication of JP2003213558A publication Critical patent/JP2003213558A/en
Pending legal-status Critical Current

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  • Nonwoven Fabrics (AREA)
  • Medicinal Preparation (AREA)
  • Cosmetics (AREA)
  • Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)
  • Laminated Bodies (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a composite sheet capable of reducing the waste of a liquid while holding the liquid required for wiping with a moderate amount absorbed of the liquid, slightly causing falling off of fibers during wiping, good easiness of peeling when overlapping the members and having excellent handleability such as strong stiffness without losing bulkiness even when impregnated with the liquid and a wiping member using the composite sheet. <P>SOLUTION: (1) This composite sheet has a regenerated cellulose filament nonwoven fabric and a synthetic fiber fabric. The composite sheet comprises 10-70 wt.% of the regenerated cellulose filament nonwoven fabric and at least one surface thereof has ≥85% area ratio of the regenerated cellulose filament nonwoven fabric. The alcohol holding ratio of the composite sheet is 5-20 wt.%. (2) The composite sheet has 15-50% wet bending resistance. (3) The composite sheet has ≤7 wt.% alcohol holding ratio of the synthetic fiber fabric. (4) The wiping member is obtained by impregnating the composite sheet with at least a lower alcohol. <P>COPYRIGHT: (C)2003,JPO

Description

【発明の詳細な説明】Detailed Description of the Invention

【０００１】[0001]

【発明の属する技術分野】本発明は複合シートおよびこ
れを用いた清拭用部材に関し、さらに詳しくは人間や愛
玩動物などの皮膚や傷口部分、陰部等を清拭する際に用
いる複合シートおよびこれを用いた清拭用部材に関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a composite sheet and a cleaning member using the same, and more particularly to a composite sheet used for cleaning the skin, wounds, genitals and the like of humans and pets. It relates to a cleaning member using.

【０００２】[0002]

【従来の技術】従来、医療分野において、人間や愛玩動
物などの皮膚や傷口部分、陰部等を清拭するための部材
としては脱脂綿が用いられている。また注射などを行う
部分の皮膚等を消毒するためにアルコールや消毒剤を含
浸させた脱脂綿が主に用いられている。脱脂綿は、吸液
性が高く、液体をよく吸収して保持すること、肌触りが
柔らかいこと、天然繊維である綿からなるので人体にや
さしいこと等の理由から使用されているが、脱脂綿は綿
繊維を単に集積してなるものであるため、清拭に際して
綿繊維が脱落して皮膚に残留したり、液体に含浸された
場合は、脱脂綿シートが隣接する脱脂綿シートと表面の
毛羽によって絡まり、他の脱脂綿にくっつき、作業性に
劣るという問題があった。また消毒用に用いる場合は、
吸液性が高いために必要以上の低級アルコールや消毒剤
を吸収し、吸収された大部分の液体が使用後の部材とと
もに廃棄されるという問題点があった。さらに脱脂綿は
水を吸収すると水の重さで柔らかくなり、同時にコシが
なくなり、使用時の取扱性が低下するという問題点があ
った。2. Description of the Related Art In the medical field, absorbent cotton has been used as a member for cleaning the skin, wounds, genitals and the like of humans and pets. In addition, absorbent cotton impregnated with alcohol or a disinfectant is mainly used for disinfecting the skin or the like of the injection site. Absorbent cotton is used for the reasons that it has a high liquid absorbency, absorbs and retains liquid well, has a soft touch, and is gentle to the human body because it is made of cotton, which is a natural fiber. Since it is simply accumulated, when the cotton fibers fall off and remain on the skin during wiping, or when it is impregnated with a liquid, the absorbent cotton sheet is entangled with the adjacent absorbent cotton sheet and the fluff on the surface, and There is a problem that it sticks to absorbent cotton and is inferior in workability. When using for disinfection,
Due to its high liquid absorbency, there is a problem that it absorbs more than necessary lower alcohols and disinfectants, and most of the absorbed liquid is discarded together with the used members. Further, the absorbent cotton becomes soft due to the weight of the water when it absorbs water, and at the same time, it loses its elasticity and there is a problem in that the handleability during use deteriorates.

【０００３】これらの問題を解決するため、実開昭５８
−４６３３２号公報には、セルロース系短繊維集積層の
表面を、セルロース系長繊維不織布で覆った清浄綿用基
材が提案されている。この方法によれば、皮膚等を拭き
とった際に綿繊維が脱落することは通常の脱脂綿に比べ
て少なくなるが、元来吸液性の高いセルロース系繊維で
構成されているため、吸液量が多く、必要以上の液体を
吸液するという問題点は改善されていない。またセルロ
ース系長繊維不織布は一般的に含水状態でのヤング率が
低く、コシがなくなるため、使用時の取扱性に問題があ
る。また実開昭５９−７１６２０号公報には、脱脂綿シ
ートの両面に自己接着によりまたは融着型接着剤により
結合されているセルロース繊維不織布を配し、これらを
相互に交絡した清浄綿が提案されているが、この場合も
上記と同様の問題点は解決されていない。さらに特開２
００１−５４５３５号公報には、脱脂綿に吸収能力の低
い素材を混合した消毒用材が提案されている。この方法
によれば、吸液能力が低下するため、必要以上の液体を
吸液するという問題点は改善されるものの、脱脂綿に混
合して使用するため、綿繊維の脱落や、毛羽が絡むこと
による取扱性の低下という問題は改善されていない。In order to solve these problems, the actual construction of Sho 58
JP-A-46332 proposes a base material for clean cotton in which the surface of a cellulose-based short fiber integrated layer is covered with a cellulose-based long fiber nonwoven fabric. According to this method, the cotton fibers are less likely to fall off when the skin or the like is wiped off as compared with normal absorbent cotton, but since it is originally composed of highly absorbent cellulose-based fibers, The problem that a large amount of liquid is absorbed and an excessive amount of liquid is absorbed has not been improved. In addition, the long-fiber cellulose nonwoven fabric generally has a low Young's modulus in a water-containing state and loses its elasticity, so that there is a problem in handleability during use. Further, Japanese Utility Model Laid-Open No. 59-71620 proposes a clean cotton in which cellulose fiber nonwoven fabrics bonded to each other by self-adhesion or by a fusion adhesive are arranged on both sides of a cotton wool sheet, and these are entangled with each other. However, even in this case, the same problem as above has not been solved. In addition,
Japanese Patent Laid-Open No. 001-54535 proposes a disinfecting material in which absorbent cotton is mixed with a material having a low absorption capacity. According to this method, since the liquid absorption capacity is reduced, the problem of absorbing more liquid than necessary is improved, but since it is used by mixing it with absorbent cotton, the cotton fibers may fall off or fluff may become entangled. However, the problem of poor handling has not been solved.

【０００４】[0004]

【発明が解決しようとする課題】本発明の課題は、上記
従来技術の問題点を解決し、適度な吸液量で清拭に必要
な液体を保持しつつ、液体の無駄を低減でき、かつ清拭
時に繊維の脱落が少なく、さらに部材を重ねた時のはが
れ易さが良好で液体に含浸した場合でもコシが強く、へ
たらないなどの取扱性に優れた複合シートおよびこれを
用いた清拭用部材を提供することにある。SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems of the prior art, hold a liquid necessary for wiping with an appropriate amount of liquid absorption, and reduce waste of liquid, and A composite sheet that does not easily drop when fibers are wiped off, is easy to peel off when stacking members, has a strong elasticity even when impregnated with liquid, and has excellent handleability such as no sag, and a cleaning sheet using this To provide a wiping member.

【０００５】[0005]

【課題を解決するための手段】本発明者らは、皮膚等を
清拭するためには適度な量の液体が部材に含浸されてい
ることが必要であり、また清拭作業における血液や体液
などの透過性や取扱性の点から適度な厚みも必要である
こと等を考慮して上記課題について鋭意検討した結果、
少なくとも清拭に使用する面に高吸液性の素材を用い、
この素材と、吸液量の抑制ができ、かつ取扱性の低下を
防止することができる素材とを併用することにより、清
拭用部材全体としての吸液量を抑えながら清拭に必要な
液量を確保でき、さらに拭き取りに使用する素材構成を
工夫することにより、清拭した部分への清拭用部材から
の汚染を少なくできることを見いだし、本発明に到達し
たものである。上記課題を達成するために本願で特許請
求される発明は以下の通りである。Means for Solving the Problems The present inventors need to impregnate a member with an appropriate amount of liquid in order to wipe the skin or the like, and blood or body fluid in the wiping operation. As a result of earnestly studying the above-mentioned problems in consideration of the need for an appropriate thickness from the viewpoint of permeability and handleability,
At least the surface used for cleaning is made of highly absorbent material,
By using this material in combination with a material that can suppress the amount of liquid absorption and prevent deterioration of handleability, the liquid required for wiping while suppressing the amount of liquid absorption of the entire cleaning member. The inventors have found that the amount can be secured, and further, by devising the material configuration used for wiping, the contamination from the wiping member to the wiped portion can be reduced, and the present invention has been achieved. The invention claimed in the present application for achieving the above object is as follows.

【０００６】（１）再生セルロース連続長繊維不織布と
合成繊維布帛を有する複合シートであって、該複合シー
トは前記再生セルロース長繊維不織布を１０〜７０重量
％含み、その少なくとも片面は再生セルロース連続長繊
維不織布の面積率が８５％以上であり、かつ、該複合シ
ートの保アルコール率が５〜２０重量％である複合シー
ト。 （２）前記複合シートの湿潤剛軟率が１５〜５０％であ
る（１）記載の複合シート。 （３）前記複合シートの合成繊維布帛の保アルコール率
が７重量％以下である（１）または（２）に記載の複合
シート。 （４）（１）〜（３）のいずれかに記載の複合シートに
少なくとも低級アルコールを含浸させてなる清拭用部
材。(1) A composite sheet comprising a regenerated cellulose continuous long-fiber nonwoven fabric and a synthetic fiber cloth, wherein the composite sheet contains the regenerated cellulose continuous-fiber non-woven fabric in an amount of 10 to 70% by weight, at least one side of which is a regenerated cellulose continuous length. A composite sheet in which the area ratio of the fibrous nonwoven fabric is 85% or more, and the alcohol retention rate of the composite sheet is 5 to 20% by weight. (2) The composite sheet according to (1), wherein the composite sheet has a wet bending resistance of 15 to 50%. (3) The composite sheet according to (1) or (2), wherein the synthetic fiber cloth of the composite sheet has an alcohol retention of 7% by weight or less. (4) A cleaning member obtained by impregnating the composite sheet according to any one of (1) to (3) with at least a lower alcohol.

【０００７】[0007]

【発明の実施の形態】本発明における複合シートは、少
なくとも再生セルロース連続長繊維不織布と合成繊維布
帛とからなる。上記再生セルロース連続長繊維不織布に
は、天然コットンやコットンリンター、木材パルプ等の
天然セルロースを溶解させて原液を作り、この原液を紡
糸ノズルから連続的に押し出して繊維化し、不織布にし
たものが用いられる。例えば、コットンリンターを洗
浄、蒸煮、ろ過を繰り返して不純物を除き、精製リンタ
ーとし、次いで銅アンモニア溶液に精製リンターを溶解
して原液とし、次いでこの原液を紡糸ノズルから押し出
し、流下緊張紡糸法により再生セルロース連続長繊維を
得る。得られた再生セルロース連続長繊維をネット上に
振り落とし、これを積層してシート状にし、硫酸で再
生、水洗、乾燥することで再生セルロース連続長繊維不
織布を得ることができる。このような再生セルロース連
続長繊維不織布の市販品としては、例えば、旭化成社製
商品名、ベンリーゼ（キュプラ不織布）が挙げられる。BEST MODE FOR CARRYING OUT THE INVENTION The composite sheet of the present invention comprises at least regenerated cellulose continuous long-fiber nonwoven fabric and synthetic fiber cloth. For the regenerated cellulose continuous long-fiber non-woven fabric, natural cotton, cotton linter, natural pulp such as wood pulp is dissolved to prepare a stock solution, and the stock solution is continuously extruded from a spinning nozzle to be fiberized to form a non-woven fabric. To be For example, cotton linter is repeatedly washed, steamed, and filtered to remove impurities to obtain a purified linter, and then the purified linter is dissolved in a copper ammonia solution to prepare a stock solution, which is then extruded from a spinning nozzle and regenerated by a flow-down tension spinning method. A continuous cellulose filament is obtained. The regenerated cellulose continuous long fiber non-woven fabric can be obtained by shaking off the obtained regenerated cellulose continuous long fibers onto a net, laminating them into a sheet, regenerating with sulfuric acid, washing with water, and drying. Examples of commercial products of such regenerated cellulose continuous long-fiber nonwoven fabric include Benlyse (cupra nonwoven fabric) manufactured by Asahi Kasei Corporation.

【０００８】上記合成繊維布帛には、繊維形成性を有す
る熱可塑性重合体からなる単一重合体からなる合成繊
維、または２種以上の重合体を鞘芯型やサイドバイサイ
ド型などに複合された合成繊維が用いられる。熱可塑性
重合体としては、ポリエチレンテレフタレート、ポリブ
チレンテレフタレート、ポリトリメチレンテレフタレー
ト、共重合ポリエステルなどのポリエステル、線状低密
度ポリエチレン、低密度ポリエチレン、高密度ポリエチ
レン、ポリプロピレンなどのポリオレフィン、ナイロン
６、ナイロン６６、ナイロン６１０、ナイロン４６など
のポリアミド、ポリアクリロニトリルなどのアクリルが
挙げられる。複合繊維の場合にはポリエチレンテレフタ
レートと高密度ポリエチレンの組み合わせ、ポリプロピ
レンと線状低密度ポリエチレンの組み合わせ、ポリエチ
レンテレフタレートとポリアミドの組み合わせなどが挙
げられる。The above-mentioned synthetic fiber cloth is a synthetic fiber composed of a single polymer composed of a thermoplastic polymer having a fiber-forming property, or a synthetic fiber in which two or more kinds of polymers are compounded in a sheath-core type or a side-by-side type. Is used. As the thermoplastic polymer, polyethylene terephthalate, polybutylene terephthalate, polytrimethylene terephthalate, polyester such as copolyester, linear low density polyethylene, low density polyethylene, high density polyethylene, polyolefin such as polypropylene, nylon 6, nylon 66, etc. , Polyamide such as nylon 610 and nylon 46, and acrylic such as polyacrylonitrile. In the case of the composite fiber, a combination of polyethylene terephthalate and high density polyethylene, a combination of polypropylene and linear low density polyethylene, a combination of polyethylene terephthalate and polyamide and the like can be mentioned.

【０００９】合成繊維の単糸繊度には特に限定されない
が、医療衛生材料や化粧材などの用途において柔軟性が
要求される場合には５．５ｄｔｅｘ以下が好ましく、よ
り好ましくは２．２ｄｔｅｘ以下である。また合成繊維
の単糸繊度に応じて布帛を形成させる方法を適宜選択す
るのが好ましい。複合繊維の場合には、薬液で複合繊維
を分割する前に織物や編物などの布帛形状とするのが好
ましい。これは、複合繊維を糸の状態で分割してから布
帛にすると、布帛形成の段階で単糸が切断しやすくな
り、取扱性が低下したり、製品になったとき単糸の脱落
による汚染の原因になるためである。また合成繊維が短
繊維で布帛が不織布の場合には、単糸繊度が０．６ｄｔ
ｅｘ未満ではカード機を用いてウエブを作成する際にカ
ード通過性が低下するので、高圧水流等を用いて交絡さ
せてウエブを作成する等の布帛形成方法を選択するのが
好ましい。Although the single yarn fineness of the synthetic fiber is not particularly limited, it is preferably 5.5 dtex or less, and more preferably 2.2 dtex or less when flexibility is required in applications such as medical hygiene materials and cosmetic materials. is there. In addition, it is preferable to appropriately select the method for forming the cloth according to the single yarn fineness of the synthetic fiber. In the case of the composite fiber, it is preferable that the composite fiber is formed into a fabric shape such as a woven fabric or a knitted fabric before the composite fiber is divided with a chemical solution. This is because if the composite fiber is divided into yarns before being made into a fabric, the single yarns are likely to be cut at the stage of forming the fabric, the handleability is reduced, and when the product becomes a product, contamination due to dropping of the single yarns occurs. This is because of the cause. When the synthetic fibers are short fibers and the cloth is a non-woven fabric, the single yarn fineness is 0.6 dt.
If it is less than ex, the card passing property is lowered when a web is produced using a card machine, so it is preferable to select a fabric forming method such as entanglement using a high-pressure water stream to produce a web.

【００１０】合成繊維が短繊維の場合、繊維長は布帛の
要求性能、例えば強力や嵩高さ等によって適宜選択する
ことができる。例えば、布帛が不織布で強力が必要な場
合には、繊維長を２５ｍｍ以上、好ましくは３５ｍｍ以
上とする。ウエブ形成に際してカード機を用いる場合に
は、繊維長を２５〜８０ｍｍの範囲にするのが好まし
い。繊維長が２５ｍｍ未満または８０ｍｍを超えるとカ
ード通過性が低下することがある。また抄紙法によりウ
エブ形成を行う場合には、短繊維の分散性の低下を防止
する点から繊維長を１０ｍｍ以下にするのが好ましい。
合成繊維の単糸断面の形状も特に限定されず、布帛の要
求機能によって適宜選択すればよい。断面形状として
は、丸形、三角形、多角形、多葉形、扁平形、Ｙ形、Ｕ
形、ブーメラン形、ドッグボーン形、また中空断面形で
あってもよい。例えば、布帛に嵩高さが要求される場合
には、ブーメラン形でクリンプを発生させて布帛に嵩高
性を持たせればよい。When the synthetic fibers are short fibers, the fiber length can be appropriately selected depending on the required performance of the cloth, such as strength and bulkiness. For example, when the cloth is a non-woven fabric and strength is required, the fiber length is set to 25 mm or more, preferably 35 mm or more. When using a card machine for forming the web, the fiber length is preferably in the range of 25 to 80 mm. If the fiber length is less than 25 mm or more than 80 mm, the card passability may decrease. When the web is formed by a papermaking method, the fiber length is preferably 10 mm or less in order to prevent the dispersibility of the short fibers from decreasing.
The shape of the single yarn cross section of the synthetic fiber is not particularly limited, and may be appropriately selected depending on the required function of the cloth. The cross-sectional shape is round, triangular, polygonal, multilobal, flat, Y-shaped, U
It may have a shape, a boomerang shape, a dog bone shape, or a hollow cross section. For example, when the fabric is required to be bulky, the boomerang type crimp may be generated to impart bulkiness to the fabric.

【００１１】また合成繊維の形態は原糸、仮撚加工糸、
撚糸等の形態でもよく、合成繊維が紡糸された後で合成
繊維同士が混繊交絡、交撚、伸度差仮撚等で複合されて
いてもよい。合成繊維布帛としては、上記した合成繊維
単体、複合繊維、紡糸された後で複合された繊維などを
用いて得られた不織布、織物または編物のいずれであっ
てもよいが、生産性、経済的性、さらにはウエブ同志の
複合化が容易であるなどの点からは不織布が好ましい。
合成繊維不織布はエンボスで圧着してあってもよく、ま
たニードルパンチ等で処理されていてもよい。織物の場
合はこれを構成する組織、例えば、平織、綾織等織の組
織には特に限定されない。編物は、横編、丸編、経編の
いずれでもよく、編組織には特に限定されない。Further, the form of the synthetic fiber includes a raw yarn, a false twisted yarn,
The form of twisted yarn or the like may be used, and after the synthetic fibers are spun, the synthetic fibers may be compounded with each other by mixed entanglement, intertwisting, elongation false false twist or the like. The synthetic fiber cloth may be any of a non-woven fabric, a woven fabric or a knitted fabric obtained by using the above-mentioned synthetic fiber simple substance, composite fiber, fiber which is spun and then composited, etc. Nonwoven fabrics are preferable from the viewpoints of the properties and the ease of compounding the webs.
The synthetic fiber non-woven fabric may be pressure-bonded by embossing, or may be treated with a needle punch or the like. In the case of a woven fabric, the structure of the woven fabric, such as a plain weave or a twill weave, is not particularly limited. The knitted fabric may be any of flat knitting, circular knitting, and warp knitting, and the knitting structure is not particularly limited.

【００１２】また、本発明における複合シートは、少な
くとも片面が、再生セルロース連続長繊維不織布の面積
率が８５％以上、好ましくは９０％以上、さらに好まし
くは９５％以上、最も好ましくは１００％であり、かつ
該再生セルロース連続長繊維不織布を１０〜７０重量
％、好ましくは２０〜６０重量％、さらに好ましくは２
５〜５０重量％を含み、残り部分が合成繊維布帛で構成
される。再生セルロース繊維は、天然セルロース繊維に
比べて吸水性に富むため、再生セルロース連続長繊維不
織布が７０重量％を超えると、必要以上に吸液性能が向
上し、吸液量を抑制することが困難となる。また再生セ
ルロース連続長繊維不織布が１０重量％未満では清拭に
必要な液体を保持することが困難となる。複合シートの
少なくとも片面が、再生セルロース連続長繊維不織布の
面積率が８５％以上であればよく、後述するように、複
合シートの両面が再生セルロース連続長繊維不織布で構
成されていてもよい。再生セルロース連続長繊維は、毛
羽が他のセルロース短繊維に比べて非常に少ないため、
皮膚等を拭き取る際に肌等に対する物理的な刺激を低減
でき、また拭き取り等の摩擦によって単繊維が脱落する
ことが少ない。単繊維が切断しても繊維が連続している
ため毛羽となって脱落する危険性が少ない。さらに液を
含浸して使用する場合、吸液量が大きいため、液を保持
しやすく、拭き取りに際して再生セルロース連続長繊維
不織布面で拭き取ることで液を清拭面に容易に移行させ
ることもできる。In the composite sheet of the present invention, the area ratio of the regenerated cellulose continuous long fiber nonwoven fabric is 85% or more, preferably 90% or more, more preferably 95% or more, and most preferably 100% on at least one side. And the regenerated cellulose continuous long-fiber nonwoven fabric is 10 to 70% by weight, preferably 20 to 60% by weight, more preferably 2
5 to 50% by weight, the rest being composed of synthetic fiber fabric. Since regenerated cellulose fibers are richer in water absorption than natural cellulose fibers, if the regenerated cellulose continuous long-fiber nonwoven fabric exceeds 70% by weight, the liquid absorption performance is improved more than necessary, and it is difficult to suppress the liquid absorption amount. Becomes If the regenerated cellulose continuous long-fiber nonwoven fabric is less than 10% by weight, it becomes difficult to retain the liquid necessary for wiping. It is sufficient that at least one surface of the composite sheet has an area ratio of the regenerated cellulose continuous long-fiber nonwoven fabric of 85% or more, and both surfaces of the composite sheet may be composed of the regenerated cellulose continuous long-fiber nonwoven fabric as described later. Regenerated cellulose continuous long fibers have much less fluff than other short cellulose fibers,
Physical irritation to the skin or the like when the skin or the like is wiped off can be reduced, and monofilaments are less likely to drop off due to friction such as wiping. Even if the single fibers are cut, the fibers are continuous and there is less risk of falling off as fluff. Further, when the liquid is impregnated and used, since the liquid absorption is large, the liquid can be easily retained, and the liquid can be easily transferred to the clean surface by wiping with the regenerated cellulose continuous long fiber nonwoven fabric surface at the time of wiping.

【００１３】本発明において、再生セルロース連続長繊
維不織布の面積率が８５％以上であるとは、再生セルロ
ース連続長繊維不織布の表面に複合された合成繊維布帛
が面積率１５％未満で存在していてもよいことを意味す
る。複合方法によっては再生セルロース連続長繊維不織
布で構成される面に複合された合成繊維布帛の一部が露
出する場合があるためである。再生セルロース連続長繊
維不織布が占める面積率が８５％未満では、例えば合成
繊維布帛が短繊維で構成されている場合には脱落繊維が
増加し、また皮膚等を拭き取る際に肌等に対する物理的
な刺激が増加し、合成繊維布帛の影響を抑えることが困
難となる。In the present invention, the area ratio of the regenerated cellulose continuous long fiber nonwoven fabric being 85% or more means that the synthetic fiber cloth compounded on the surface of the regenerated cellulose continuous long fiber nonwoven fabric exists in an area ratio of less than 15%. Means that you may. This is because a part of the composite synthetic fiber cloth may be exposed on the surface composed of the regenerated cellulose continuous long-fiber nonwoven fabric depending on the composite method. When the area ratio occupied by the regenerated cellulose continuous long-fiber nonwoven fabric is less than 85%, for example, when the synthetic fiber cloth is composed of short fibers, the number of fallen fibers increases, and when the skin or the like is wiped off, the physical content of the skin or the like is not increased. The irritation increases and it becomes difficult to suppress the influence of the synthetic fiber cloth.

【００１４】再生セルロース連続長繊維不織布面に合成
繊維布帛の一部が露出する場合、前者の面積率は以下の
方法で測定することができる。再生セルロース連続長繊
維不織布を濃色、例えば黒や濃紺に反応性染料を用いて
染色する。染色の際、水に浸漬し、４０〜６０℃程度の
温度をかけるときに、再生セルロース連続長繊維が膨潤
して形状が変わる可能性はあるが、本発明の複合シート
の実際の使用では液に含浸して使用することが多いので
特に問題はない。染色後、反応性染料を通常の方法で固
着させた後、合成繊維布帛へ汚染している染料を水洗や
湯染により洗浄する。次に常温にて乾燥させる。染色、
乾燥した試料を以下の方法で解析し、面積率を求める。
旭化成社製画像解析ソフト『Ａ像くん』を用いて解析す
る。スキャナーにより再生セルロース連続長繊維不織布
面の画像を３００ｄｐｉで取り込む。この時、再生セル
ロース連続長繊維不織布面ではない方の面に白い台紙と
黒い台紙を置いて２つの画像を同一面積で取り込む。２
値化処理として、明度を２５６段階に分割して中間の明
度にて明部と暗部に２分する。白台紙を裏面に置いた状
態の暗部の面積が再生セルロース連続長繊維不織布の面
積であり、黒台紙を裏面に置いた状態の明部の面積が合
成繊維布帛の面積である。再生セルロース連続長繊維不
織布の面積率は次式で求められる。ただし、式中のＡは
再生セルロース連続長繊維不織布の面積、Ｂは合成繊維
布帛の面積である。 再生セルロース連続長繊維不織布の面積率（％）＝〔Ａ
／（Ａ＋Ｂ）〕×１００When a part of the synthetic fiber cloth is exposed on the regenerated cellulose continuous long-fiber nonwoven fabric surface, the former area ratio can be measured by the following method. The regenerated cellulose continuous filament non-woven fabric is dyed in a dark color, for example, black or dark blue with a reactive dye. At the time of dyeing, when it is immersed in water and a temperature of about 40 to 60 ° C. is applied, the regenerated cellulose continuous filaments may swell and the shape may change, but in the actual use of the composite sheet of the present invention, Since it is often impregnated with and used, there is no particular problem. After dyeing, the reactive dye is fixed by a usual method, and then the dye contaminating the synthetic fiber cloth is washed with water or hot water. Next, it is dried at room temperature. staining,
The dried sample is analyzed by the following method to obtain the area ratio.
Analysis is performed using Asahi Kasei's image analysis software "A image-kun". An image of the regenerated cellulose continuous filament non-woven fabric surface is captured by a scanner at 300 dpi. At this time, a white mount and a black mount are placed on the surface other than the regenerated cellulose continuous filament non-woven fabric surface and two images are captured in the same area. Two
As the binarization process, the lightness is divided into 256 levels, and the lightness and the darkness are divided into two at an intermediate lightness. The area of the dark part with the white backing placed on the back is the area of the regenerated cellulose continuous long-fiber nonwoven fabric, and the area of the bright part with the black backing placed on the back is the area of the synthetic fiber fabric. The area ratio of the regenerated cellulose continuous long-fiber nonwoven fabric is calculated by the following formula. However, in the formula, A is the area of the regenerated cellulose continuous long-fiber nonwoven fabric, and B is the area of the synthetic fiber cloth. Area ratio (%) of regenerated cellulose continuous long-fiber nonwoven fabric = [A
/ (A + B)] × 100

【００１５】さらに、本発明における複合シートは、保
アルコール率が５〜２０重量％、好ましくは５〜１５重
量％、さらに好ましくは５〜１０重量％であることが必
要である。保アルコール率が２０重量％を超えると、医
療用に使用した場合、脱脂綿等のセルロース１００％で
構成された清拭用部材との保アルコール量に差がなくな
り、清拭部材とともに廃棄される液体量を低減させるこ
とができない。また保アルコール率が５重量％未満では
清拭した際に清拭面への十分なアルコールの移行ができ
ず、消毒効果が得られない。本発明においてアルコール
とは、医療系で使用される主に低級アルコールをいい、
低級アルコールとは、エタノール、イソプロピルアルコ
ールをいう。これらのアルコールの濃度には特に制限さ
れない。通常、医療系で用いられる場合には日本薬局方
で指定される消毒用エタノールを用いることが多いが、
７０体積％に調整したエタノール、イソプロピルアルコ
ールを用いることもある。Further, the composite sheet of the present invention is required to have an alcohol retention rate of 5 to 20% by weight, preferably 5 to 15% by weight, more preferably 5 to 10% by weight. When the alcohol retention rate exceeds 20% by weight, when used for medical purposes, there is no difference in the alcohol retention amount from the cleaning member composed of 100% cellulose such as absorbent cotton, and the liquid is discarded together with the cleaning member. The amount cannot be reduced. If the alcohol retention rate is less than 5% by weight, the alcohol cannot be sufficiently transferred to the wiped surface during wiping, and the disinfecting effect cannot be obtained. In the present invention, alcohol means mainly lower alcohol used in medical systems,
The lower alcohol refers to ethanol and isopropyl alcohol. The concentration of these alcohols is not particularly limited. Usually, when used in the medical system, it is often the case that ethanol for disinfection specified by the Japanese Pharmacopoeia is used.
Ethanol or isopropyl alcohol adjusted to 70% by volume may be used.

【００１６】また保アルコール率とは、以下の方法で測
定された値をいう。複合シートを秤量ビンに入れ、１０
５℃で６時間絶乾する。秤量ビンごとシリカゲル（乾燥
剤）が入ったデシケータ中に入れ、デシケータを密閉し
て２０℃、６５％ＲＨ条件下でデシケータごと１時間放
冷する。その後、デシケータから秤量ビンを取り出し、
複合シートと秤量ビンの重量Ａ（ｇ）を測定する。次に
複合シートを取り出し、秤量ビンのみの重量Ｂ（ｇ）を
測定する。秤量した複合シートを１０リットルの日本薬
局方指定の消毒用アルコール、または特級試薬のエタノ
ールと蒸留水を用いてエタノールを７０体積％に調整し
たアルコール中に沈めて３０分間放置する。複合シート
が沈まない場合はピンセットを用いて沈める。次に、複
合シートを遠心分離機で３５００ｒ．ｐ．ｍ．、１０分
間処理し、保液した合成繊維布帛の重量Ｃ（ｇ）を測定
する。保アルコール率は次式で求める。 保アルコール率（％）＝〔（Ｃ−（Ａ―Ｂ））／（Ａ−
Ｂ）〕×１００ 本発明の複合シートを医療系などの清拭用部材として用
いる場合は、主に低級アルコールを含浸させ、清拭面を
消毒するために用いられる。複合シートの保アルコール
率が一定範囲であるため、清拭用部材として用いた場
合、全体としての保液量を低減させることができ、かつ
十分な消毒効果を得ることができる。The alcohol retention rate is a value measured by the following method. Put the composite sheet into the weighing bottle, 10
Dry at 6 ° C for 6 hours. The weighing bottle is placed in a desiccator containing silica gel (desiccant), the desiccator is sealed, and the desiccator is allowed to cool for 1 hour at 20 ° C. and 65% RH. After that, take out the weighing bottle from the desiccator,
The weight A (g) of the composite sheet and weighing bottle is measured. Next, the composite sheet is taken out, and the weight B (g) of only the weighing bottle is measured. The weighed composite sheet is immersed in 10 liters of disinfecting alcohol specified by the Japanese Pharmacopoeia, or in alcohol in which ethanol is adjusted to 70% by volume using ethanol and distilled water of special grade reagents and left for 30 minutes. If the composite sheet does not sink, use tweezers to sink it. The composite sheet was then centrifuged at 3500 rpm. p. m. The weight C (g) of the synthetic fiber cloth which has been treated for 10 minutes and kept liquid is measured. The alcohol retention rate is calculated by the following formula. Alcohol retention rate (%) = [(C- (AB)) / (A-
B)] × 100 When the composite sheet of the present invention is used as a member for cleaning in medical systems or the like, it is used mainly for impregnating lower alcohol and for disinfecting the cleaning surface. Since the alcohol retention rate of the composite sheet is within a certain range, when used as a wiping member, it is possible to reduce the total amount of liquid retention and obtain a sufficient disinfecting effect.

【００１７】本発明の複合シートは、湿潤剛軟率が１５
〜５０％であることが好ましい。湿潤剛軟率は液体を含
浸させて使用する際の取扱性に関係する。湿潤剛軟率が
１５％未満では、複合シートを取り扱う際に柔らかすぎ
て取扱性が低下し、５０％を超えると硬すぎて清拭面に
沿わないなど取扱性が低下する。ここで湿潤剛軟率と
は、ＪＩＳ−Ｌ−１０９６の剛軟度試験法Ａ法、４５度
カンチレバー法に準じて測定した値をいう。具体的に
は、２０℃、６５％ＲＨ条件下で複合シートを２４時間
調湿した後、２ｃｍ×１５ｃｍの試料を２０点準備し、
各試料に、試料重量の５倍の蒸留水を均一に含浸させ、
１０分間放置し、試料片の傾斜部から１３ｃｍ以降の部
分を１．５ｃｍ幅の金尺で抑える以外は、ＪＩＳ記載の
方法で実施した。湿潤すると台と試験片との抵抗が大き
くなり、試験片が台上で曲がり押せない場合には、台上
に旭化成社製商品名『サランラップ』をしわのないよう
に貼り付けて抵抗を下げて実施してもよい。湿潤剛軟率
は次式で求めた。 湿潤剛軟率（％）＝〔（試料片を移動して斜面に接触す
るまでの移動距離２０点の平均値）／１３（ｃｍ）〕×
１００ なお、試料片が斜面に接触するまでに１３ｃｍを超えた
場合は移動距離を１３ｃｍとして計算した。The composite sheet of the present invention has a wet bending resistance of 15
It is preferably ˜50%. The wet flexural modulus is related to the handleability when used by being impregnated with a liquid. When the wet bending resistance is less than 15%, the composite sheet is too soft to handle and the handleability is deteriorated. When it exceeds 50%, the handleability is too hard to follow the wiped surface and the handleability is deteriorated. Here, the wet bending resistance is a value measured according to the bending resistance test method A of JIS-L-1096 and the 45-degree cantilever method. Specifically, the composite sheet was conditioned under the conditions of 20 ° C. and 65% RH for 24 hours, and 20 points of 2 cm × 15 cm sample were prepared.
Each sample was uniformly impregnated with 5 times the sample weight of distilled water,
The test was carried out by the method described in JIS except that the sample piece was allowed to stand for 10 minutes, and a portion 13 cm or more from the inclined portion of the sample piece was held down by a 1.5 cm width metal gauge. When it gets wet, the resistance between the table and the test piece increases, and if the test piece cannot be bent and pushed on the table, stick the Asahi Kasei product name "Saran Wrap" on the table to reduce the resistance. You may implement. The wet flexural modulus was calculated by the following formula. Wet bending resistance (%) = [(average value of 20 moving distances until the sample piece moves to contact the slope) / 13 (cm)] x
100 When the sample piece exceeds 13 cm before coming into contact with the slope, the moving distance was calculated as 13 cm.

【００１８】複合シートの目付けは、使用の目的によっ
て適宜選択することができるが、３０〜３００ｇ／ｍ2
が好ましく、より好ましくは５０〜２００ｇ／ｍ2 、さ
らに好ましくは６０〜１５０ｇ／ｍ2 である。複合シー
トの目付けが３００ｇ／ｍ2を超えると、液を含浸して
使用する場合、シートの構造吸液量が増加し、シートの
保液率を下げることが困難な場合がある。複合シートの
目付けが３０ｇ／ｍ2未満では、ペーパーライクで取扱
性が低下したり、構造的な吸液量が少なくなり、液を含
浸して清拭する場合に清拭面への液の移行が困難な場合
がある。複合シートの厚みは、使用の目的によって適宜
選択することができるが、０．９８Ｎ／ｃｍ2 の荷重で
測定した場合、０．３〜３ｍｍが好ましく、より好まし
くは０．４〜２ｍｍ、さらに好ましくは０．５〜１．５
ｍｍである。厚みが３ｍｍを超えると、液を含浸して使
用する場合、構造的な吸液量が増えて廃棄する液量が多
くなり、また硬くなるため取扱性が低下することがあ
る。厚みが０．３ｍｍ未満では、ペーパーライクで取扱
性が低下したり、構造的な吸液量が少なすぎて清拭面へ
液の移行が困難な場合がある。The unit weight of the composite sheet can be appropriately selected depending on the purpose of use, but is 30 to 300 g / m 2.
Is preferred, more preferably 50 to 200 g / m 2 , and even more preferably 60 to 150 g / m 2 . When the basis weight of the composite sheet is more than 300 g / m 2 , when the composite sheet is impregnated with a liquid, the structural liquid absorption amount of the sheet increases, and it may be difficult to lower the liquid retention rate of the sheet. When the basis weight of the composite sheet is less than 30 g / m 2 , the handling property is reduced like paper and the amount of structural liquid absorption is small, and when liquid is impregnated and wiped, the liquid moves to the wiped surface. Can be difficult. The thickness of the composite sheet can be appropriately selected depending on the purpose of use, but when measured with a load of 0.98 N / cm 2 , it is preferably 0.3 to 3 mm, more preferably 0.4 to 2 mm, and further preferably Is 0.5 to 1.5
mm. When the thickness exceeds 3 mm, when the liquid is impregnated and used, the structural liquid absorption increases, the amount of liquid to be discarded increases, and the liquid becomes hard, which may deteriorate the handleability. When the thickness is less than 0.3 mm, the handling property may be deteriorated in a paper-like manner, and the structural liquid absorption amount may be too small to make it difficult to transfer the liquid to the wiping surface.

【００１９】複合シートの引張強力は、繊維軸の方向に
よらず、ウエット条件で５０Ｎ／５ｃｍ幅以上であるこ
とが好ましい。ここで、ウエット条件とは、試料を蒸留
水中に３０分間放置した後に測定することをいう。ウエ
ット条件で５０Ｎ／５ｃｍ未満では、液体を含浸して清
拭した際にシートが破れることがあり、実用上の問題を
生じることがある。引張強力は、ＪＩＳ−Ｌ−１０９６
Ａの方法に準じて測定する。すなわち、繊維軸方向、お
よび繊維軸に垂直な方向で試料長１５ｃｍ、試料幅５ｃ
ｍの試料片を１０点づつ作成し、低速伸長型引張試験機
を用い、試料の掴み間隔１０ｃｍとし、引張速度１０ｃ
ｍ／分で伸長し、破断時の荷重値の平均値を引張強力
（Ｎ／５ｃｍ）とする。The tensile strength of the composite sheet is preferably 50 N / 5 cm width or more under wet conditions regardless of the fiber axis direction. Here, the wet condition refers to measurement after leaving the sample in distilled water for 30 minutes. When the wet condition is less than 50 N / 5 cm, the sheet may be broken when impregnated with a liquid and wiped, which may cause a practical problem. Tensile strength is JIS-L-1096
It measures according to the method of A. That is, the sample length is 15 cm and the sample width is 5 c in the fiber axis direction and the direction perpendicular to the fiber axis.
10 pieces of m sample pieces were prepared, and a gripping interval of the sample was set to 10 cm using a low-speed extension type tensile tester, and a pulling speed was 10 c.
The tensile strength (N / 5 cm) is defined as the average value of the load values at the time of breaking at the elongation of m / min.

【００２０】本発明の複合シートの構造は、再生セルロ
ース連続長繊維不織布、合成繊維布帛、再生セルロース
連続長繊維不織布の３層構造であることが好ましい。本
来、本発明の目的を達成するためには少なくとも片面が
再生セルロース連続長繊維不織布であればよいが、液含
浸して清拭する場合には再生セルロース連続長繊維不織
布面に液が多量に分配されるため、合成繊維布帛との２
層構造の場合、再生セルロース連続長繊維不織布面を清
拭する面に使用されるが、清拭作業時に清拭に用いる面
を確認する必要があり手間がかかる。３層構造とした場
合にはどの面を用いても再生セルロース連続長繊維不織
布となるので確認する手間が省ける。さらに、合成繊維
布帛が短繊維の場合、再生セルロース連続長繊維不織布
に挟まれる構造のため合成繊維布帛からの繊維の脱落を
抑制することができる。The structure of the composite sheet of the present invention is preferably a three-layer structure of regenerated cellulose continuous long fiber nonwoven fabric, synthetic fiber cloth, and regenerated cellulose continuous long fiber nonwoven fabric. Originally, in order to achieve the object of the present invention, at least one side may be a regenerated cellulose continuous long fiber nonwoven fabric, but when impregnated with a liquid and wiped, a large amount of liquid is distributed to the regenerated cellulose continuous long fiber nonwoven fabric surface. 2 with synthetic fiber cloth
In the case of a layered structure, it is used as a surface for wiping the regenerated cellulose continuous long-fiber non-woven fabric surface, but it is necessary to check the surface used for wiping at the time of the wiping operation, which is troublesome. In the case of a three-layer structure, the regenerated cellulose continuous long-fiber nonwoven fabric can be used regardless of which surface is used, so that the labor for confirmation can be saved. Further, when the synthetic fiber cloth is a short fiber, it is possible to prevent the fibers from falling out of the synthetic fiber cloth due to the structure sandwiched between the regenerated cellulose continuous long fiber nonwoven fabrics.

【００２１】複合シートの両面に再生セルロース連続長
繊維不織布を用いる場合には、複合シートとしての吸液
量が片面にのみ使用する場合に比べて多くなるため、片
面に使用する場合よりも若干目付けの低いものを用いる
のが好ましい。例えば、複合シートを製造する前の再生
セルロース連続長繊維不織布の目付けは８〜１００ｇ／
ｍ2 が好ましく、より好ましくは１０〜５０ｇ／ｍ2 で
ある。またこの場合の再生セルロース連続長繊維不織布
の厚みは０．０３〜１ｍｍが好ましく、より好ましくは
０．０５〜０．７ｍｍである。この再生セルロース連続
長繊維不織布の厚みが０．０３ｍｍ未満では液を含浸し
て清拭作業をする場合に再生セルロース連続長繊維不織
布が破れることがあり、また厚みが１ｍｍを超えると再
生セルロースの膨潤に加え、繊維と繊維の空隙が多くな
り、構造的な吸液量が増加し、無駄な液量を低減させる
ことができないことがある。When the regenerated cellulose continuous filament non-woven fabric is used on both sides of the composite sheet, the amount of liquid absorption as the composite sheet is larger than that when it is used on only one side, and therefore the basis weight is slightly higher than when it is used on one side. It is preferable to use one having a low For example, the basis weight of the regenerated cellulose continuous long-fiber nonwoven fabric before manufacturing the composite sheet is 8 to 100 g /
m 2 is preferable, and more preferably 10 to 50 g / m 2 . The thickness of the regenerated cellulose continuous long-fiber nonwoven fabric in this case is preferably 0.03 to 1 mm, more preferably 0.05 to 0.7 mm. If the thickness of the regenerated cellulose continuous long fiber nonwoven fabric is less than 0.03 mm, the regenerated cellulose continuous long fiber nonwoven fabric may be broken when the liquid is impregnated for wiping work, and if the thickness exceeds 1 mm, the regenerated cellulose swells. In addition, the number of voids between fibers increases, the structural liquid absorption increases, and it may not be possible to reduce the amount of wasted liquid.

【００２２】複合シートに用いる合成繊維布帛として
は、上述したように素材が安価であり、また高圧水流な
どにより再生セルロース連続長繊維不織布と容易に複合
できる点から不織布が好ましく、また合成繊維の素材と
しては、医療用具に認可されている素材、特にポリエス
テルが好ましい。ポリエステルは医療用具用の素材とし
て認可されており、水に対しての浸透性もポリオレフィ
ン系合成繊維に比べて良好である。また不織布は適度な
厚みと柔軟性を得る点から、合成繊維の長繊維不織布に
ニードルパンチ等で処理したものが好ましい。合成繊維
不織布の目付けは２０〜２００ｇ／ｍ2 が好ましく、よ
り好ましくは３０〜１５０ｇ／ｍ2 、さらに好ましくは
４０〜１２０ｇ／ｍ2 である。複合シート全体の目付け
にもよるが、合成繊維不織布の目付けが２０ｇ／ｍ2 未
満では吸液量を抑制する効果が減少し、２００ｇ／ｍ2
を超えると複合シートが硬くなり、取扱性が損なわれる
ことがある。The synthetic fiber cloth used for the composite sheet is preferably a non-woven fabric because it is inexpensive as described above and can be easily combined with a regenerated cellulose continuous long-fiber non-woven fabric by a high-pressure water stream or the like. As the material, a material approved for medical devices, particularly polyester, is preferable. Polyester is approved as a material for medical devices, and has better permeability to water than polyolefin synthetic fibers. Further, the nonwoven fabric is preferably a synthetic fiber long-fiber nonwoven fabric treated with a needle punch or the like from the viewpoint of obtaining an appropriate thickness and flexibility. Basis weight of the synthetic fiber nonwoven fabric is preferably 20 to 200 g / m 2, more preferably 30 to 150 g / m 2, more preferably from 40 to 120 g / m 2. Depending on the basis weight of the composite sheet, if the basis weight of the synthetic fiber non-woven fabric is less than 20 g / m 2 , the effect of suppressing the amount of liquid absorption is reduced to 200 g / m 2.
If it exceeds, the composite sheet becomes hard and the handling property may be impaired.

【００２３】合成繊維不織布の厚みは０．２〜１．２ｍ
ｍが好ましく、より好ましくは０．３〜１ｍｍである。
合成繊維不織布の厚みが０．２ｍｍ未満では、構造的な
吸液量は低下するものの製造された複合不織布のコシが
なくなり取扱性が低下する場合がある。また合成繊維不
織布の厚みが１．２ｍｍを超えると、繊維と繊維の空隙
が多くなり、構造的な吸液量が増加し、保液量を抑制で
きない場合がある。本発明における複合シートを構成す
る合成繊維布帛の保アルコール率は７重量％以下が好ま
しい。複合シートを医療系の清拭用部材として用いる場
合にはアルコールを含浸して使用することが多いため、
合成繊維布帛の保アルコール率が７重量％を超えると、
合成繊維布帛にアルコールが多く分配され、清拭に使用
されず、清拭用部材とともに廃棄されるアルコール量が
増加し易い。The synthetic fiber nonwoven fabric has a thickness of 0.2 to 1.2 m.
m is preferable, and more preferably 0.3 to 1 mm.
When the thickness of the synthetic fiber non-woven fabric is less than 0.2 mm, the structural liquid absorption may be reduced, but the manufactured composite non-woven fabric may lose its elasticity and the handling property may be deteriorated. When the thickness of the synthetic fiber non-woven fabric exceeds 1.2 mm, the voids between the fibers increase, the structural liquid absorption increases, and the liquid retention amount may not be suppressed. The alcohol retention rate of the synthetic fiber cloth constituting the composite sheet in the present invention is preferably 7% by weight or less. When a composite sheet is used as a member for medical cleaning, it is often impregnated with alcohol,
If the alcohol retention of the synthetic fiber cloth exceeds 7% by weight,
Since a large amount of alcohol is distributed to the synthetic fiber cloth, it is not used for cleaning, and the amount of alcohol discarded together with the cleaning member tends to increase.

【００２４】ここで、合成繊維布帛の保アルコール率と
は、複合シートを製造した後の合成繊維布帛の保アルコ
ール率をいう。このため、合成繊維布帛の保アルコール
率を求めるためには複合シートから合成繊維布帛を取り
出す必要がある。合成繊維布帛を取り出すためには、通
常、再生セルロース連続長繊維不織布は硫酸、銅アンモ
ニア溶液で溶解するため、再生セルロース連続長繊維不
織布を酸やアルカリで溶解させて取り出す。保アルコー
ル率の測定は上記した複合シートの保アルコール率の測
定方法と同様に実施すればよい。Here, the alcohol retention of the synthetic fiber cloth means the alcohol retention of the synthetic fiber cloth after the composite sheet is manufactured. Therefore, it is necessary to take out the synthetic fiber cloth from the composite sheet in order to obtain the alcohol retention rate of the synthetic fiber cloth. In order to take out the synthetic fiber cloth, usually, the regenerated cellulose continuous long-fiber nonwoven fabric is dissolved with a sulfuric acid and copper ammonia solution, so the regenerated cellulose continuous long-fiber nonwoven fabric is dissolved with an acid or an alkali and then taken out. The alcohol retention rate may be measured in the same manner as the method for measuring the alcohol retention rate of the composite sheet described above.

【００２５】本発明の複合シートの製造方法には特に限
定されない。例えば、再生セルロース連続長繊維不織布
と合成繊維布帛を重ねた状態で圧力をかけて圧着するエ
ンボス法でもよいし、再生セルロース連続長繊維不織布
と合成繊維布帛を重ねた状態で針を刺し、繊維を交絡さ
せるニードルパンチ法でもよいし、また再生セルロース
連続長繊維不織布と合成繊維布帛を重ねた状態で高圧液
体流により繊維を交絡させて複合するいわゆる柱状流法
でもよい。エンボス法では接着剤を用いてもよく、また
圧着時に熱をかけて合成繊維を溶融させて接着力を高め
るいわゆる熱エンボス法を採用してもよい。エンボス法
により得られた複合シートは、表面の再生セルロース連
続長繊維不織布の単繊維を切断することが少ないので清
拭に際して繊維の脱落を少なくすることができる。一
方、再生セルロース連続長繊維不織布には熱可塑性がな
いので液含浸した状態で膨潤することがあり、圧着部分
が外れることがある。また、熱エンボス法で融着した複
合シートでは融着部分が固くなり、清拭面を傷つけるこ
とがある。さらに、複合シートの厚みが薄くなるため、
繊維間の空隙が小さくなり構造的な吸液量が低下するも
のの、ペーパーライクで取扱性が低下することがある。The method for producing the composite sheet of the present invention is not particularly limited. For example, an embossing method in which a regenerated cellulose continuous long-fiber nonwoven fabric and a synthetic fiber cloth are stacked and pressure-bonded may be used, or a needle is pierced in a state where the regenerated cellulose continuous long-fiber nonwoven fabric and the synthetic fiber cloth are stacked to form a fiber. A needle punching method in which the fibers are entangled may be used, or a so-called columnar flow method in which fibers are entangled and combined by a high-pressure liquid flow in a state in which a regenerated cellulose continuous long-fiber nonwoven fabric and a synthetic fiber cloth are stacked may be used. An adhesive may be used in the embossing method, or a so-called hot embossing method may be adopted in which heat is applied during the pressure bonding to melt the synthetic fibers to enhance the adhesive force. In the composite sheet obtained by the embossing method, the number of monofilaments of the regenerated cellulose continuous long-fiber nonwoven fabric on the surface is less likely to be cut, so that the fibers can be prevented from falling off during wiping. On the other hand, since the regenerated cellulose continuous long-fiber nonwoven fabric has no thermoplasticity, it may swell in a liquid-impregnated state and the pressure-bonded portion may come off. Further, in the composite sheet fused by the hot embossing method, the fused portion becomes hard and the wiping surface may be damaged. Furthermore, since the composite sheet becomes thinner,
Although the voids between the fibers are small and the structural liquid absorption is reduced, the handling property may be reduced in the paper-like manner.

【００２６】ニードルパンチ法により得られた複合シー
トは、非常に柔らかく、嵩高性に富んだものとなるので
風合が良好となるが、製造中に針が折れて複合シートに
混入したり、単繊維が針により切断するため、清拭時に
繊維が脱落したり、繊維間の空隙が大きくなるので構造
的な吸液量が増加することがある。柱状流法は、高圧液
体流の液体として水を用いて複合させると再生セルロー
ス連続長繊維不織布が膨潤した状態で繊維同士が交絡し
やすくなり、単繊維を切断することも少ないので好まし
い。柱状流法により得られた複合シートは、繊維の脱落
や異物の混入もニードルパンチ法に比べて少なく、エン
ボス法よりも厚みが出て、かつ液体に含浸しても繊維が
交絡して複合しているので再生セルロース連続長繊維不
織布と合成繊維布帛が剥がれにくく、また適度な厚みも
維持できるので固くなりにくい。また複合シートの支持
体として通常ネットが用いられるため、ネットの形状に
より複合シート表面に模様をつけることもできるが、こ
の場合にも柱状流法が好ましい。The composite sheet obtained by the needle punching method is very soft and has a high bulkiness, so that it has a good feeling. However, the needle may be broken during production and mixed into the composite sheet. Since the fibers are cut by a needle, the fibers may fall off during wiping, or the voids between the fibers may become large, which may increase the structural liquid absorption amount. The columnar flow method is preferable because when it is compounded with water as the liquid of the high-pressure liquid flow, the regenerated cellulose continuous long-fiber nonwoven fabric is easily entangled with each other in a swollen state, and the single fibers are rarely cut. The composite sheet obtained by the columnar flow method has less fibers falling off and foreign substances mixed in than the needle punch method, has a thickness larger than the embossing method, and even when impregnated with a liquid, the fibers are entangled to form a composite. Therefore, the regenerated cellulose continuous long-fiber non-woven fabric and the synthetic fiber fabric are not easily peeled off, and an appropriate thickness can be maintained, so that they are hard to be hard. Further, since a net is usually used as a support for the composite sheet, it is possible to form a pattern on the surface of the composite sheet depending on the shape of the net, but in this case as well, the columnar flow method is preferable.

【００２７】柱状流法で複合シートを製造する場合は、
高圧液体流の圧力や処理のスピードは複合シート全体の
厚みや素材構成により適宜選択するのが好ましい。高圧
液体流を得るための液体噴射口は、孔径０．０５〜１．
０ｍｍが好ましく、より好ましくは０．１ｍｍ〜０．５
ｍｍである。孔間隔は０．８ｍｍ〜１．５ｍｍが好まし
く、孔配列は、例えば千鳥配列で３〜５配列が好まし
い。また液体としては取扱性の面から常温水、または温
水を用いることが好ましい。噴射圧力は、３〜１５ＭＰ
ａが好ましく、より好ましくは４〜１３Ｍｐａである。
噴射圧力が３ＭＰａ未満では十分な交絡が得られないこ
とがあり、複合シートの剥離強度が低下し、使用中に剥
がれる等、取扱性が低下することがある。噴射圧力が１
５ＭＰａを超えると再生セルロース連続長繊維不織布を
形成する単繊維が高圧液体流の圧力で切断して毛羽が多
発し、脱落繊維が増加することがある。また高圧液体流
を噴射する際、複合するシートと噴射口が接触すること
なく、かつ高圧液体流のエネルギーが効率的に繊維の交
絡に使用されるという観点から複合するシートと噴射口
との距離は１０〜１００ｍｍが好ましい。また支持体と
してのネットの網目の大きさは、４〜１２０メッシュ／
２．５４ｃｍが好ましく、より好ましくは１０〜１００
メッシュ／２．５４ｃｍである。When the composite sheet is produced by the columnar flow method,
It is preferable that the pressure of the high-pressure liquid stream and the processing speed are appropriately selected depending on the thickness of the entire composite sheet and the material configuration. The liquid injection port for obtaining the high-pressure liquid flow has a hole diameter of 0.05 to 1.
0 mm is preferable, and more preferably 0.1 mm to 0.5.
mm. The hole interval is preferably 0.8 mm to 1.5 mm, and the hole arrangement is preferably, for example, a staggered arrangement of 3 to 5 arrangements. As the liquid, it is preferable to use normal temperature water or warm water from the viewpoint of handleability. Injection pressure is 3 to 15MP
a is preferable, and more preferably 4 to 13 Mpa.
If the injection pressure is less than 3 MPa, sufficient entanglement may not be obtained, the peel strength of the composite sheet may decrease, and the composite sheet may be peeled off during use, resulting in poor handleability. Injection pressure is 1
If it exceeds 5 MPa, the single fibers forming the regenerated cellulose continuous long-fiber nonwoven fabric may be cut by the pressure of the high-pressure liquid flow to cause frequent occurrence of fluffs, resulting in an increase in dropped fibers. In addition, when ejecting the high-pressure liquid stream, the distance between the composite sheet and the ejection port does not come into contact with the composite sheet, and the energy of the high-pressure liquid stream is efficiently used for entanglement of fibers. Is preferably 10 to 100 mm. The size of the mesh of the net as a support is 4 to 120 mesh /
2.54 cm is preferred, more preferably 10-100
Mesh / 2.54 cm.

【００２８】本発明の複合シートは、前述した低級アル
コールを含浸させて対人または対物用の清拭用部材とし
て用いることが好ましい。医療用の用途では脱脂綿に低
級アルコールを含浸させて皮膚等を消毒する、いわゆる
酒精綿という清拭用部材が多く用いられる。本発明の複
合シートをこの用途で用いると、拭き取り面が再生セル
ロース連続長繊維不織布であるので消毒には十分なアル
コール量が確保でき、かつ、脱脂綿に比べて保液量が減
少するため、アルコールの使用量を大幅に減少させるこ
とができ、経済的に非常に有効である。さらに本発明の
複合シートをこの用途で用いると、脱脂綿に比べて拭き
取り面から脱落する繊維量が激減するため脱落した繊維
による皮膚の汚染の危険性を大幅に減少させ、かつ脱落
した繊維が皮膚に残る不快感を減じることができる。本
発明の複合シートは低級アルコールを含浸させた医療系
の酒精綿用部材として用いることが最も好ましい。The composite sheet of the present invention is preferably impregnated with the above-mentioned lower alcohol and used as a wiping member for a person or an objective. For medical use, a so-called alcohol-purified cotton wiping member is often used to sterilize the skin by impregnating absorbent cotton with lower alcohol. When the composite sheet of the present invention is used for this purpose, the wiping surface is a regenerated cellulose continuous long fiber non-woven fabric so that a sufficient amount of alcohol can be secured for disinfection, and the liquid retention amount is reduced as compared with absorbent cotton. It is possible to greatly reduce the amount used and is economically very effective. Furthermore, when the composite sheet of the present invention is used in this application, the amount of fibers falling off from the wiping surface is drastically reduced as compared with absorbent cotton, and therefore the risk of skin contamination by the falling fibers is greatly reduced, and the falling fibers are It can reduce the discomfort that remains. Most preferably, the composite sheet of the present invention is used as a member for medical-use alcohol-purified cotton impregnated with lower alcohol.

【００２９】本発明の複合シートに低級アルコールを含
浸させた清拭用部材として用いる場合には、あらかじめ
低級アルコールを含浸させた状態でもよいし、使用する
前に低級アルコールを含浸させてもよい。医療系の酒精
綿用途で使用する場合の複合シートの目付けは６０〜２
００ｇ／ｍ2 が好ましく、より好ましくは８０〜１５０
ｇ／ｍ2 である。６０ｇ／ｍ2 未満では、医療用途で使
用する場合液含浸量が低下するため消毒効果に問題を生
じることがある。２００ｇ／ｍ2 を超えると構造的な吸
液量が増大するので、実質的に廃棄される含浸液の量が
増加する。When the composite sheet of the present invention is used as a cleaning member impregnated with lower alcohol, it may be impregnated with lower alcohol in advance, or may be impregnated with lower alcohol before use. The weight per unit area of the composite sheet is 60 to 2 when it is used for medical use of alcohol spun cotton.
00 g / m 2 is preferable, and more preferably 80 to 150.
It is g / m 2 . If it is less than 60 g / m 2 , the amount of impregnated liquid may be reduced when used for medical purposes, which may cause a problem in disinfection effect. If it exceeds 200 g / m 2 , the structural liquid absorption amount increases, so that the amount of impregnating liquid to be substantially discarded increases.

【００３０】医療系の酒精綿用途で使用する場合、本発
明の複合シートを密閉性の高い容器に入れ、低級アルコ
ール溶液を含浸させて使用することが好ましい。この場
合、複合シートへの低級アルコール溶液の含浸率は１５
０〜３５０重量％が好ましく、より好ましくは２００〜
３００重量％である。ここで低級アルコール溶液とは少
なくとも低級アルコールを３０〜８０体積％を含む溶液
をいう。低級アルコール溶液の含浸率が１５０重量％未
満では、複合シート全体に低級アルコール溶液が行き渡
らなかったり、保存中にアルコールが蒸発して乾き、十
分な消毒効果が得られないことがある。また低級アルコ
ール溶液の含浸率が３５０重量％を超えると複合シート
の吸液量も増加するので廃棄される溶液量が増加する。
また、本発明の複合シートに少なくとも低級アルコール
を１〜３０体積％と、消毒剤や防カビ剤を配合し、おし
ぼり、濡れタオル、ウエットティッシュなどに用いても
よい。顔等を清拭する場合、拭き取り面が再生セルロー
ス連続長繊維不織布であるため、ひげなどに脱落した繊
維が残らず不快感が大幅に減少する。In the case of using for medical application of cotton liquor, it is preferable to put the composite sheet of the present invention in a highly airtight container and impregnate it with a lower alcohol solution before use. In this case, the impregnation rate of the lower alcohol solution into the composite sheet is 15
0 to 350% by weight is preferable, and more preferably 200 to
It is 300% by weight. Here, the lower alcohol solution means a solution containing at least 30 to 80% by volume of lower alcohol. If the impregnation rate of the lower alcohol solution is less than 150% by weight, the lower alcohol solution may not spread all over the composite sheet, or the alcohol may evaporate and dry during storage, and a sufficient disinfecting effect may not be obtained. Further, when the impregnation rate of the lower alcohol solution exceeds 350% by weight, the liquid absorption amount of the composite sheet also increases, so that the amount of the discarded solution increases.
Further, the composite sheet of the present invention may be mixed with at least 1 to 30% by volume of a lower alcohol, a disinfectant and an antifungal agent, and may be used for a hand towel, a wet towel, a wet tissue and the like. When the face or the like is wiped, since the wiped surface is a regenerated cellulose continuous long-fiber nonwoven fabric, the fibers that have fallen off the beard and the like do not remain, and discomfort is greatly reduced.

【００３１】[0031]

【実施例】以下、本発明を実施例に基づいて説明する。
なお、例中の評価は以下の方法で実施した。 (1) 目付けの測定：４ｃｍ四方の試料を２５点準備す
る。２０℃、６５％RH条件下で２４時間調湿した後、試
料の重量を測定し、得られた値の平均値をｍ2 あたりに
換算して目付けとする。 (2) 厚みの測定：４ｃｍ四方の試料を２０点準備する。
２０℃、６５％RH条件下で２４時間調湿した後、０．９
８Ｎ／ｃｍ2 の荷重で厚みを測定し、平均値を求める。 (3) 保アルコール率の測定：前述の方法で測定する。 (4) 合成繊維布帛の保アルコール率の評価：前述の方法
で測定する。 (5) 湿潤剛軟率：前述の方法で測定する。EXAMPLES The present invention will be described below based on examples.
The evaluations in the examples were carried out by the following methods. (1) Measurement of basis weight: Prepare 25 points of 4 cm square sample. After conditioning the humidity for 24 hours under the conditions of 20 ° C. and 65% RH, the weight of the sample is measured, and the average value of the obtained values is converted per m 2 to obtain a basis weight. (2) Thickness measurement: 20 points of 4 cm square samples are prepared.
After controlling the humidity for 24 hours at 20 ° C and 65% RH, 0.9
The thickness is measured with a load of 8 N / cm 2 , and the average value is obtained. (3) Measurement of alcohol retention rate: Measured by the method described above. (4) Evaluation of alcohol retention of synthetic fiber fabric: Measured by the method described above. (5) Wet bending resistance: Measured by the method described above.

【００３２】(6) 脱落繊維：４ｃｍ四方の試料を３００
ｍｌの純水に浸し、１５分間超音波を当てた後に試料を
取り出す。この液を黒色に着色された濾紙を用いて濾過
し、濾紙上に残された試料からのファイバー状の脱落物
を測定する。長さが１００μｍ以上のものを目視観察
し、脱落繊維が少ないものを５級、脱落繊維が若干ある
ものを３級、脱落繊維が非常に多いものを１級とする。 (7) 耐摩耗性：ＪＩＳ−Ｌ−１０９６記載の学振型摩耗
試験機を用いて評価する。試料に蒸留水を用いて２００
重量％に調整し、綿布と１００回摩擦し、表面状態を目
視評価する。毛羽が少ないものを５級、若干毛羽がある
ものを３級、非常に毛羽が多いものを１級とする。(6) Lost fiber: 300 cm of 4 cm square
The sample is taken out after being immersed in ml of pure water and subjected to ultrasonic waves for 15 minutes. This liquid is filtered using a filter paper colored in black, and the fibrous fallen substance from the sample left on the filter paper is measured. Those with a length of 100 μm or more are visually observed, and those with a few dropped fibers are classified as grade 5, those with a few dropped fibers are classified as grade 3, and those with a large amount of dropped fibers are classified as grade 1. (7) Abrasion resistance: Evaluated using a Gakushin-type abrasion tester described in JIS-L-1096. 200 using distilled water as a sample
The weight is adjusted to 100% by weight, and it is rubbed 100 times with a cotton cloth to visually evaluate the surface condition. Grades with few fluffs are grade 5, grades with slight fluffs are grade 3, and grades with very fluffs are grade 1.

【００３３】(8) アルコール含浸清拭部材としての性能 各実施例および比較例の複合シートまたはシートを４ｃ
ｍ角に切断し、３０枚重ねて密閉性の高い広口ビンに入
れ、日本薬局方指定の消毒用アルコール３００重量％を
複合シートまたはシートの上部へ直接かかるように注入
する。上から５枚目、１０枚目、１５枚目の複合シート
またはシートを取り、肘の内側と顔を清拭し、以下の
〜の項目を評価する。評価は１０名の０．５ｍｍ程度
のひげが生えた男性で実施し、平均値で評価する。 消毒用アルコールの使用量：比較例８の日本薬局方
指定の脱脂綿に比較して、消毒用アルコールの使用重量
が７０％以下を５級、７０〜１００％を３級、１００％
を超えるものを１級とする。 清拭時のアルコール移行性：肘の内側、顔を清拭
し、比較例８の日本薬局方指定の脱脂綿に比較して、消
毒用アルコールの皮膚への移行性が大差のないものを５
級、若干少ないものを３級、足りないものを１級とす
る。 取扱性：広口ビンから５枚目、１０枚目、１５枚目
の複合シートまたはシートを取り出す際の取り出しやす
さ、肘の内側、顔を清拭する際の取扱い性を評価し、比
較例８の日本薬局方指定の脱脂綿に比較して、取扱性が
非常に良好なものを５級、良好なものを３級、同等また
は取扱性が劣るものを１級とする。(8) Performance as alcohol-impregnated wiping member 4c of the composite sheet or sheet of each Example and Comparative Example
Cut into m-square pieces, stack 30 sheets in a highly-sealed wide-mouthed bottle, and inject 300% by weight of rubbing alcohol specified by the Japanese Pharmacopoeia so as to be directly applied to the composite sheet or the upper portion of the sheet. The fifth, tenth, and fifteenth composite sheets or sheets from the top are taken, the inside of the elbow and the face are wiped, and the following items (1) to (4) are evaluated. The evaluation is carried out by ten men with a beard of about 0.5 mm, and the average value is evaluated. Amount of disinfecting alcohol used: Compared to absorbent cotton specified in the Japanese Pharmacopoeia of Comparative Example 8, 70% or less of the disinfecting alcohol used is grade 5, 70-100% is grade 3, 100%
Grade 1 is the one that exceeds. Alcohol transferability during wiping: Compared to absorbent cotton specified in the Japanese Pharmacopoeia of Comparative Example 8 after cleaning the inside of the elbow and face, the transferability of alcohol for disinfection to the skin was 5 or less.
Grade 3, slightly less than Grade 3, less than enough Grade 1. Handleability: The ease of taking out the fifth, tenth, and fifteenth composite sheets or sheets from the wide-mouthed bottle, the ease of taking out when cleaning the inside of the elbow, and the face were evaluated, and Comparative Example 8 Compared with the absorbent cotton specified by the Japanese Pharmacopoeia, grade 5 has very good handleability, grade 3 is good, and grade 1 is equivalent or inferior in handleability.

【００３４】 清拭時の皮膚への残留繊維：肘の内
側、顔を５回清拭し、皮膚に残留する繊維が非常に少な
いものを５級、若干あるものを３級、多いものを１級と
する。 清拭後の残留アルコール量：５枚目、１０枚目、１
５枚目の清拭後の重量を測定し、アルコール含浸前の平
均重量との差を平均して平均残留アルコール量を求め
る。平均残留アルコール量をアルコール含浸前の平均重
量で除して平均残留アルコール率を求める。比較例８の
日本薬局方指定の脱脂綿でも同様の操作を行った後、目
付け換算するため脱脂綿の平均残留アルコール率に（対
象シートのアルコール含浸前の平均重量／脱脂綿のアル
コール含浸前の平均重量）を乗じて脱脂綿の換算平均残
留アルコール率を求める。対象シートの平均残留アルコ
ール率と脱脂綿の換算平均残留アルコール率の比率が、
６０％以下のものを５級、６０〜９０％のものを３級、
９０％を超えるものを１級とする。 総合評価：〜の評価結果を平均し、平均値が
４．５以上を○、４〜４．５を△、４未満を×とする。Residual fibers on the skin during wiping: The inner part of the elbow and the face are wiped 5 times, the fibers remaining on the skin are grade 5; Class Residual alcohol content after wiping: 5th, 10th, 1
The weight of the fifth sheet after wiping is measured, and the difference from the average weight before impregnation with alcohol is averaged to obtain the average residual alcohol amount. The average residual alcohol content is obtained by dividing the average residual alcohol amount by the average weight before alcohol impregnation. After performing the same operation on the absorbent cotton specified in the Japanese Pharmacopoeia of Comparative Example 8, the average residual alcohol ratio of the absorbent cotton was calculated in terms of the basis weight (average weight of the target sheet before alcohol impregnation / average weight of alcohol absorbent cotton before impregnation). Multiply by to obtain the converted average residual alcohol ratio of the absorbent cotton. The ratio of the average residual alcohol ratio of the target sheet and the converted average residual alcohol ratio of the absorbent cotton is
60% or less of 5 grade, 60-90% of 3 grade,
Grades exceeding 90% are classified as Grade 1. Comprehensive evaluation: the evaluation results of are averaged, and the average value is 4.5 or more as O, 4 to 4.5 is Δ, and less than 4 is X.

【００３５】(9) 面積率：少なくとも片面が再生セルロ
ース連続長繊維不織布を主として構成される面の再生セ
ルロース連続長繊維不織布の面積率は、前述した方法で
再生セルロース連続長繊維不織布の面積と合成繊維布帛
の面積を測定して算出するが、複合シート（試料）の染
色は以下のようにして行う。１０ｃｍ四方の試料を２点
準備する。水を試料重量合計の１００倍量準備する。水
に試料中のセルロース重量の０．１２倍量のダイスター
社製ビニルスルフォン染料 Remazol Black DEN-High-Gr
anを溶かす。１５ｃｍ×３０ｃｍの金属製パッドに試料
２点を置き、染料を溶解させた染液をパッドに投入す
る。次いで染液に対して８０ｇ／Ｌの割合で無水硫酸ナ
トリウムをパッド中の染液を用いて溶解させながら投入
する。パッド中の染液を１℃／分で昇温する。昇温開始
直後よりパッド中の染液を撹拌する。なお、撹拌に当た
っては撹拌棒などを使用してもよいが、試料に接触しな
いようにする。染液が５０℃まで昇温したら炭酸ナトリ
ムを染液に対して２０ｇ／Ｌの割合で３分割にして５分
毎に染液に溶解させた状態で投入する。５０℃をキープ
しながら６０分間撹拌する。６０分後、染液から試料を
取り出し、水洗する。その後、酢酸を０．５ｇ／Ｌの割
合で染液と同様の常温の水に投入し、その中へ試料を入
れて５分間中和する。試料を取り出し、水洗し、染液と
同量の水に試料を入れ、８０℃で１５分間湯洗する。８
０℃湯洗操作を２回繰り返す。湯洗後の試料を常温で乾
燥させる。(9) Area ratio: The area ratio of the regenerated cellulose continuous long fiber non-woven fabric on at least one side mainly composed of the regenerated cellulose continuous long fiber non-woven fabric is determined by the above-mentioned method to be combined with the area of the regenerated cellulose continuous long fiber non-woven fabric. The area of the fiber cloth is measured and calculated, and the composite sheet (sample) is dyed as follows. Two 10 cm square samples are prepared. Prepare 100 times as much water as the total sample weight. Remazol Black DEN-High-Gr vinyl sulfone dye manufactured by Dister Co. in an amount 0.12 times the weight of cellulose in the sample in water.
melt an. Two samples are placed on a 15 cm × 30 cm metal pad, and a dye solution in which a dye is dissolved is put on the pad. Then, 80 g / L of anhydrous sodium sulfate is added to the dye liquor while being dissolved using the dye liquor in the pad. The dye liquor in the pad is heated at 1 ° C / min. Immediately after starting the temperature rise, the dyeing solution in the pad is stirred. A stirring rod or the like may be used for stirring, but do not touch the sample. When the temperature of the dyeing liquor is raised to 50 ° C., sodium carbonate is added to the dyeing liquor at a rate of 20 g / L in three portions and is added every 5 minutes while being dissolved in the dyeing liquor. Stir for 60 minutes while maintaining 50 ° C. After 60 minutes, the sample is taken out of the dyeing solution and washed with water. Then, acetic acid is added at a rate of 0.5 g / L to the same room temperature water as the dye liquor, and the sample is put therein and neutralized for 5 minutes. The sample is taken out, washed with water, put in the same amount of water as the dye liquor, and washed with hot water at 80 ° C. for 15 minutes. 8
The hot water washing operation at 0 ° C. is repeated twice. The sample after washing with hot water is dried at room temperature.

【００３６】実施例１ コットンリンターを銅アンモニア溶液で溶解し、流下緊
張下で連続して紡糸し、シート形成させ、平均単繊度
２．１ｄｔｅｘ、目付け２７．５ｇ／ｍ2 、厚み０．３
８ｍｍの再生セルロース連続長繊維不織布を得た。また
ポリエチレンテレフタレートを熱溶融し、連続して紡糸
し、シート形成させたのち、ニードルパンチ処理を行
い、平均単繊度４．４ｄｔｅｘ、目付け５３ｇ／ｍ2 、
厚み０．４７ｍｍの合成繊維不織布を得た。得られた再
生セルロース連続長繊維不織布と合成繊維不織布を２０
メッシュ／２．５４ｃｍのプラスチックネット上に置
き、噴射孔径０．１５ｍｍ、ノズル数３２７０個、ノズ
ルと複合シートの間隔１０ｍｍ、プラスチックネットの
移動速度１５ｍ／分、噴射圧力７ＭＰａの高圧水流で処
理して繊維を交絡させ、エアサクションにより余剰水分
を除去したのち、１００℃の乾燥機で乾燥させることに
より複合シートを得た。Example 1 Cotton linter was dissolved in a copper ammonia solution and spun continuously under flowing tension to form a sheet. The average single fineness was 2.1 dtex, the basis weight was 27.5 g / m 2 , and the thickness was 0.3.
An 8 mm regenerated cellulose continuous filament non-woven fabric was obtained. In addition, polyethylene terephthalate was melted by heat, continuously spun to form a sheet, and then needle punched to obtain an average single fineness of 4.4 dtex, a basis weight of 53 g / m 2 ,
A synthetic fiber nonwoven fabric having a thickness of 0.47 mm was obtained. The obtained regenerated cellulose continuous filament non-woven fabric and synthetic fiber non-woven fabric 20
Placed on a mesh / 2.54 cm plastic net, treated with a high-pressure water stream with an injection hole diameter of 0.15 mm, a number of nozzles of 3270, a nozzle-composite sheet distance of 10 mm, a plastic net moving speed of 15 m / min, and an injection pressure of 7 MPa. The fibers were entangled, excess water was removed by air suction, and then dried with a dryer at 100 ° C. to obtain a composite sheet.

【００３７】得られた複合シートは、再生セルロース連
続長繊維不織布／合成繊維不織布の２層構造で、再生セ
ルロース連続長繊維不織布の混率は３４．２重量％、目
付け８１ｇ／ｍ2 、厚み０．５２ｍｍ、保アルコール率
８．９重量％、湿潤剛軟率３９％、脱落繊維は非常に少
なく５級、湿潤摩擦も表面毛羽の発生は非常に少なく５
級であった。得られた複合シートを硫酸で処理し、再生
セルロース連続長繊維不織布を溶解させ、合成繊維不織
布を得た。合成繊維不織布の目付けは５３ｇ／ｍ2 、厚
みは０．３４ｍｍ、合成繊維不織布の保アルコール率
３．６重量％であった。The obtained composite sheet had a two-layer structure of regenerated cellulose continuous long fiber nonwoven fabric / synthetic fiber nonwoven fabric, and the mixture ratio of regenerated cellulose continuous long fiber nonwoven fabric was 34.2% by weight, the basis weight was 81 g / m 2 , and the thickness was 0.1. 52 mm, alcohol retention 8.9% by weight, wet softness 39%, very few dropped fibers, very few grades of surface fluff in wet friction 5
It was class. The obtained composite sheet was treated with sulfuric acid to dissolve the regenerated cellulose continuous filament non-woven fabric to obtain a synthetic fiber non-woven fabric. The basis weight of the synthetic fiber nonwoven fabric was 53 g / m 2 , the thickness was 0.34 mm, and the alcohol retention rate of the synthetic fiber nonwoven fabric was 3.6% by weight.

【００３８】実施例２ コットンリンターを銅アンモニア溶液で溶解し、流下緊
張下で連続して紡糸し、シート形成させ、平均単繊度
２．１ｄｔｅｘ、目付け１８．５ｇ／ｍ2 、厚み０．２
６ｍｍの再生セルロース連続長繊維不織布を得た。また
ポリエチレンテレフタレートを熱溶融し、連続して紡糸
し、シート形成させたのち、ニードルパンチ処理を行
い、平均単繊度４．４ｄｔｅｘ、目付け８０ｇ／ｍ2 、
厚み０．６４ｍｍの合成繊維不織布を得た。得られた再
生セルロース連続長繊維不織布２枚の間に合成繊維不織
布を挟み、２０メッシュ／２．５４ｃｍのプラスチック
ネット上に置き、噴射孔径０．１５ｍｍ、ノズル数３２
７０個、ノズルと複合シートの間隔１０ｍｍ、プラスチ
ックネットの移動速度１５ｍ／分、噴射圧力７ＭＰａの
高圧水流で処理して繊維を交絡させ、エアサクションに
より余剰水分を除去したのち、１００℃の乾燥機で乾燥
させることにより複合シートを得た。Example 2 Cotton linter was dissolved in a copper ammonia solution, continuously spun under flowing tension to form a sheet, and the average single fineness was 2.1 dtex, basis weight was 18.5 g / m 2 , and thickness was 0.2.
A 6 mm regenerated cellulose continuous filament non-woven fabric was obtained. Further, polyethylene terephthalate was melted by heat, continuously spun to form a sheet, and then needle punched to obtain an average single fineness of 4.4 dtex, a basis weight of 80 g / m 2 ,
A synthetic fiber nonwoven fabric having a thickness of 0.64 mm was obtained. A synthetic fiber non-woven fabric was sandwiched between two pieces of the obtained regenerated cellulose continuous long-fiber non-woven fabric and placed on a 20 mesh / 2.54 cm plastic net. The injection hole diameter was 0.15 mm and the number of nozzles was 32.
70 pieces, the distance between the nozzle and the composite sheet is 10 mm, the moving speed of the plastic net is 15 m / min, and the fibers are entangled by treating with a high-pressure water stream with a spraying pressure of 7 MPa to remove excess water by air suction, and then a dryer at 100 ° C. A composite sheet was obtained by drying with.

【００３９】得られた複合シートは、再生セルロース連
続長繊維不織布／合成繊維不織布／再生セルロース連続
長繊維不織布の３層構造で、再生セルロース連続長繊維
不織布の混率は３２重量％、目付け１１９ｇ／ｍ2 、厚
み０．６８ｍｍ、保アルコール率９．１重量％、湿潤剛
軟率４３％、脱落繊維は非常に少なく５級、湿潤摩擦も
表面毛羽の発生は非常に少なく５級であった。得られた
複合シートを硫酸で処理し、再生セルロース連続長繊維
不織布を溶解させ、合成繊維不織布を得た。合成繊維不
織布の目付けは８０ｇ／ｍ2 、厚みは０．４０ｍｍ、保
アルコール率４．４６重量％であった。The obtained composite sheet has a three-layer structure of regenerated cellulose continuous long fiber nonwoven fabric / synthetic fiber nonwoven fabric / regenerated cellulose continuous long fiber nonwoven fabric, and the regenerated cellulose continuous long fiber nonwoven fabric has a mixing ratio of 32% by weight and a basis weight of 119 g / m 2. 2. Thickness was 0.68 mm, alcohol retention was 9.1% by weight, wet flexural modulus was 43%, there were very few dropped fibers, and there were few surface fluffs in wet friction, and it was in the fifth grade. The obtained composite sheet was treated with sulfuric acid to dissolve the regenerated cellulose continuous filament non-woven fabric to obtain a synthetic fiber non-woven fabric. The basis weight of the synthetic fiber nonwoven fabric was 80 g / m 2 , the thickness was 0.40 mm, and the alcohol retention rate was 4.46% by weight.

【００４０】実施例３ 実施例１と同様の方法で平均単繊度２．１ｄｔｅｘ、目
付け２７．５ｇ／ｍ2、厚み０．３８ｍｍの再生セルロ
ース連続長繊維不織布を得た。またε−カプロラクタム
を熱溶融し、連続して紡糸し、シート形成させたのち、
ニードルパンチ処理を行い、平均単繊度３．３ｄｔｅ
ｘ、目付け５０ｇ／ｍ2 、厚み０．６２ｍｍの合成繊維
不織布を得た。得られた再生セルロース連続長繊維不織
布２枚の間に合成繊維不織布を挟み、実施例２と同様の
方法で複合シートを得た。Example 3 In the same manner as in Example 1, a regenerated cellulose continuous long fiber nonwoven fabric having an average single fineness of 2.1 dtex, a basis weight of 27.5 g / m 2 , and a thickness of 0.38 mm was obtained. Also, ε-caprolactam is melted by heat, continuously spun, and formed into a sheet,
Needle punch processing is performed, and average single fineness is 3.3 dte.
x, a basis weight of 50 g / m 2 , and a synthetic fiber nonwoven fabric having a thickness of 0.62 mm were obtained. A synthetic fiber non-woven fabric was sandwiched between two obtained regenerated cellulose continuous long-fiber non-woven fabrics to obtain a composite sheet in the same manner as in Example 2.

【００４１】得られた複合シートは、再生セルロース連
続長繊維不織布／合成繊維不織布／再生セルロース連続
長繊維不織布の３層構造で、再生セルロース連続長繊維
不織布の混率は５４．３重量％、目付け１０７ｇ／
ｍ2 、厚み１．０３ｍｍ、保アルコール率１８．５重量
％、湿潤剛軟率２９％、脱落繊維は非常に少なく５級、
湿潤摩擦も表面毛羽の発生は非常に少なく５級であっ
た。得られた複合シートを銅アンモニア溶液で処理し、
再生セルロース連続長繊維不織布を溶解させ、合成繊維
不織布を得た。合成繊維不織布の目付けは５２ｇ／
ｍ2 、厚みは０．５３ｍｍ、保アルコール率８．４２重
量％であった。The obtained composite sheet had a three-layer structure of regenerated cellulose continuous long fiber non-woven fabric / synthetic fiber non-woven fabric / regenerated cellulose continuous long fiber non-woven fabric, the mixture ratio of regenerated cellulose continuous long fiber non-woven fabric was 54.3% by weight, and the basis weight was 107 g. /
m 2 , thickness 1.03 mm, alcohol retention 18.5% by weight, wet bending resistance 29%, very few dropped fibers, 5th grade,
Also in the wet friction, the occurrence of surface fluff was extremely small, and it was grade 5. The obtained composite sheet is treated with a copper ammonia solution,
The regenerated cellulose continuous long-fiber nonwoven fabric was dissolved to obtain a synthetic fiber nonwoven fabric. The basis weight of synthetic fiber nonwoven fabric is 52 g /
m 2 , the thickness was 0.53 mm, and the alcohol retention rate was 8.42% by weight.

【００４２】実施例４ 実施例１と同様の方法で平均単繊度２．１ｄｔｅｘ、目
付け１３．５ｇ／ｍ2、厚み０．０８ｍｍの再生セルロ
ース連続長繊維不織布を得た。またε−カプロラクタム
を熱溶融し、連続して紡糸し、シート形成させたのち、
ニードルパンチ処理を行い、平均単繊度３．３ｄｔｅ
ｘ、目付け１００ｇ／ｍ2 、厚み０．９２ｍｍの合成繊
維不織布を得た。得られた再生セルロース連続長繊維不
織布２枚の間に合成繊維不織布を挟み、実施例２と同様
の方法で複合シートを得た。得られた複合シートは、再
生セルロース連続長繊維不織布／合成繊維不織布／再生
セルロース連続長繊維不織布の３層構造で、再生セルロ
ース連続長繊維不織布の混率は２０．９重量％、目付け
１２９ｇ／ｍ2 、厚み０．８２ｍｍ、保アルコール率１
４．８重量％、湿潤剛軟率５７％、脱落繊維は非常に少
なく５級、湿潤摩擦は若干表面毛羽が発生し３級であっ
た。得られた複合シートを銅アンモニア溶液で処理し、
再生セルロース連続長繊維不織布を溶解させ、合成繊維
不織布を得た。合成繊維不織布の目付けは１０１ｇ／ｍ
2 、厚みは０．６８ｍｍ、保アルコール率８．６９重量
％であった。Example 4 In the same manner as in Example 1, a regenerated cellulose continuous long fiber nonwoven fabric having an average single fineness of 2.1 dtex, a basis weight of 13.5 g / m 2 and a thickness of 0.08 mm was obtained. Also, ε-caprolactam is melted by heat, continuously spun, and formed into a sheet,
Needle punch processing is performed, and average single fineness is 3.3 dte.
x, a basis weight of 100 g / m 2 , and a thickness of 0.92 mm were obtained as a synthetic fiber nonwoven fabric. A synthetic fiber non-woven fabric was sandwiched between two obtained regenerated cellulose continuous long-fiber non-woven fabrics to obtain a composite sheet in the same manner as in Example 2. The obtained composite sheet had a three-layer structure of regenerated cellulose continuous long-fiber non-woven fabric / synthetic fiber non-woven fabric / regenerated cellulose continuous long-fiber non-woven fabric, and the mixture ratio of regenerated cellulose continuous long-fiber non-woven fabric was 20.9% by weight and basis weight 129 g / m 2. , Thickness 0.82mm, alcohol retention 1
The weight was 4.8% by weight, the wet bending resistance was 57%, the amount of fibers dropped was extremely low, and the wet friction was in the third grade with some surface fluff. The obtained composite sheet is treated with a copper ammonia solution,
The regenerated cellulose continuous long-fiber nonwoven fabric was dissolved to obtain a synthetic fiber nonwoven fabric. Fabric weight of synthetic fiber non-woven fabric is 101g / m
2. The thickness was 0.68 mm, and the alcohol retention rate was 8.69% by weight.

【００４３】実施例５ 実施例１と同様の方法で平均単繊度２．１ｄｔｅｘ、目
付け２７．５ｇ／ｍ2、厚み０．３８ｍｍの再生セルロ
ース連続長繊維不織布を得た。またε−カプロラクタム
を熱溶融し、連続して紡糸し、シート形成させたのち、
ニードルパンチ処理を行い、平均単繊度３．３ｄｔｅ
ｘ、目付け３０ｇ／ｍ2 、厚み０．７２ｍｍの合成繊維
不織布を得た。得られた再生セルロース連続長繊維不織
布２枚の間に合成繊維不織布を挟み、実施例２と同様の
方法で複合シートを得た。得られた複合シートは、再生
セルロース連続長繊維不織布／合成繊維不織布／再生セ
ルロース連続長繊維不織布の３層構造で、再生セルロー
ス連続長繊維不織布の混率は６３．２重量％、目付け８
７ｇ／ｍ2 、厚み０．９３ｍｍ、保アルコール率１９．
７重量％、湿潤剛軟率１３％、脱落繊維は非常に少なく
５級、湿潤摩擦も表面毛羽の発生は非常に少なく５級で
あった。得られた複合シートを銅アンモニア溶液で処理
し、再生セルロース連続長繊維不織布を溶解させ、合成
繊維不織布を得た。合成繊維不織布の目付けは３２ｇ／
ｍ2 、厚みは０．６１ｍｍ、保アルコール率８．２６重
量％であった。Example 5 In the same manner as in Example 1, a regenerated cellulose continuous long fiber nonwoven fabric having an average single fineness of 2.1 dtex, a basis weight of 27.5 g / m 2 and a thickness of 0.38 mm was obtained. Also, ε-caprolactam is melted by heat, continuously spun, and formed into a sheet,
Needle punch processing is performed, and average single fineness is 3.3 dte.
x, a basis weight of 30 g / m 2 , and a synthetic fiber nonwoven fabric having a thickness of 0.72 mm were obtained. A synthetic fiber non-woven fabric was sandwiched between two obtained regenerated cellulose continuous long-fiber non-woven fabrics to obtain a composite sheet in the same manner as in Example 2. The obtained composite sheet had a three-layer structure of regenerated cellulose continuous long-fiber non-woven fabric / synthetic fiber non-woven fabric / regenerated cellulose continuous long-fiber non-woven fabric, and the mixture ratio of regenerated cellulose continuous long-fiber non-woven fabric was 63.2% by weight, and basis weight was 8
7 g / m 2 , thickness 0.93 mm, alcohol retention 19.
The weight was 7% by weight, the wetting / softening rate was 13%, the number of shed fibers was extremely low, and the fluff generation was very low in the fifth grade. The obtained composite sheet was treated with a copper ammonia solution to dissolve the regenerated cellulose continuous long fiber non-woven fabric to obtain a synthetic fiber non-woven fabric. The basis weight of synthetic fiber nonwoven fabric is 32 g /
m 2 , the thickness was 0.61 mm, and the alcohol retention rate was 8.26% by weight.

【００４４】比較例１ 平均単繊度２．８ｄｔｅｘ、平均繊維長３０ｍｍ、目付
け３０ｇ／ｍ2 、厚み０．４８ｍｍのビスコースレーヨ
ン短繊維不織布を準備した。またポリエチレンテレフタ
レートを熱溶融し、連続して紡糸し、シート形成させた
のち、ニードルパンチ処理を行い、平均単繊度４．４ｄ
ｔｅｘ、目付け５３ｇ／ｍ2 、厚み０．４７ｍｍの合成
繊維不織布を得た。得られたビスコースレーヨン短繊維
不織布と合成繊維不織布を用いて実施例１と同様の方法
で複合シートを得た。得られた複合シートは、再生セル
ロース短繊維不織布／合成繊維不織布の２層構造で、再
生セルロース連続長繊維不織布の混率は０％、再生セル
ロース短繊維不織布の混率は３６．１重量％、目付け８
４ｇ／ｍ2 、厚み０．６２ｍｍ、保アルコール率１３．
７重量％、湿潤剛軟率２３％、脱落繊維は非常に多く１
級、湿潤摩擦も表面毛羽の発生は非常に多く１級であっ
た。得られた複合シートを硫酸で処理し、再生セルロー
ス短繊維不織布を溶解させ、合成繊維不織布を得た。合
成繊維不織布の目付けは５３ｇ／ｍ2 、厚みは０．３７
ｍｍ、保アルコール率３．７重量％であった。Comparative Example 1 A viscose rayon short fiber nonwoven fabric having an average single fineness of 2.8 dtex, an average fiber length of 30 mm, a basis weight of 30 g / m 2 , and a thickness of 0.48 mm was prepared. Further, polyethylene terephthalate was melted by heat, continuously spun to form a sheet, and then needle punched to obtain an average fineness of 4.4d.
A synthetic fiber non-woven fabric having a tex, a basis weight of 53 g / m 2 , and a thickness of 0.47 mm was obtained. A composite sheet was obtained in the same manner as in Example 1 using the obtained viscose rayon short fiber nonwoven fabric and synthetic fiber nonwoven fabric. The obtained composite sheet had a two-layer structure of regenerated cellulose short fiber non-woven fabric / synthetic fiber non-woven fabric, the remixed cellulose continuous long fiber non-woven fabric content was 0%, the regenerated cellulose short fiber non-woven fabric content was 36.1% by weight, and the basis weight was 8
4 g / m 2 , thickness 0.62 mm, alcohol retention 13.
7% by weight, wet stiffness 23%, very many dropped fibers 1
In terms of grade and wet friction, the occurrence of surface fluff was extremely high and was grade 1. The obtained composite sheet was treated with sulfuric acid to dissolve the regenerated cellulose short fiber nonwoven fabric to obtain a synthetic fiber nonwoven fabric. The basis weight of the synthetic fiber non-woven fabric is 53 g / m 2 , and the thickness is 0.37
mm, alcohol retention rate was 3.7% by weight.

【００４５】比較例２ ポリエチレンテレフタレートを熱溶融し、連続して紡糸
し、シート形成させたのち、ニードルパンチ処理を行
い、平均単繊度４．４ｄｔｅｘ、目付け１００ｇ／
ｍ2 、厚み０．８６ｍｍの合成繊維不織布を得た。得ら
れた合成繊維不織布は、再生セルロース連続長繊維不織
布の混率は０重量％、保アルコール率３．８１重量％、
湿潤剛軟率６４％、脱落繊維は若干有り３級、湿潤摩擦
も表面毛羽の発生が若干有り３級であった。Comparative Example 2 Polyethylene terephthalate was heat-melted, continuously spun to form a sheet, and then subjected to a needle punching treatment to obtain an average single fineness of 4.4 dtex and a basis weight of 100 g /
A synthetic fiber non-woven fabric with m 2 and a thickness of 0.86 mm was obtained. The obtained synthetic fiber non-woven fabric had a regenerated cellulose continuous filament non-woven fabric content of 0% by weight, an alcohol retention rate of 3.81% by weight,
The wet bending resistance was 64%, the number of shed fibers was slightly 3rd grade, and the wet friction was also 3rd grade with slight occurrence of surface fluff.

【００４６】比較例３ 実施例１と同様の方法で平均単繊度２．１ｄｔｅｘ、目
付け２７．５ｇ／ｍ2、厚み０．３８ｍｍの再生セルロ
ース連続長繊維不織布を得た。得られた再生セルロース
連続長繊維不織布を４枚重ねて、ニードルパンチ処理を
行い、目付け１１５ｇ／ｍ2 、厚み１．３１ｍｍの再生
セルロース連続長繊維不織布を得た。得られた再生セル
ロース連続長繊維不織布は、再生セルロース連続長繊維
不織布の混率は１００重量％、保アルコール率３１．９
重量％、湿潤剛軟率９％、脱落繊維は非常に少なく５
級、湿潤摩擦も表面毛羽の発生は非常に少なく５級であ
った。Comparative Example 3 In the same manner as in Example 1, a regenerated cellulose continuous long fiber nonwoven fabric having an average single fineness of 2.1 dtex, a basis weight of 27.5 g / m 2 , and a thickness of 0.38 mm was obtained. Four pieces of the obtained regenerated cellulose continuous long-fiber nonwoven fabric were stacked and subjected to needle punching treatment to obtain a regenerated cellulose continuous long-fiber nonwoven fabric having a basis weight of 115 g / m 2 and a thickness of 1.31 mm. In the obtained regenerated cellulose continuous long fiber nonwoven fabric, the mixture ratio of the regenerated cellulose continuous long fiber nonwoven fabric was 100% by weight, and the alcohol retention rate was 31.9.
% By weight, wet flexural modulus 9%, very few dropped fibers 5
With respect to the grade and the wet friction, the occurrence of surface fluff was very small, and the grade was 5.

【００４７】比較例４ 実施例１と同様の方法で平均単繊度２．１ｄｔｅｘ、目
付け１０ｇ／ｍ2 、厚み０．０７ｍｍの再生セルロース
連続長繊維不織布を得た。ε−カプロラクタムを熱溶融
し、連続して紡糸し、シート形成させたのち、ニードル
パンチ処理を行い、平均単繊度３．３ｄｔｅｘ、目付け
１００ｇ／ｍ2 、厚み０．９２ｍｍの合成繊維不織布を
得た。実施例１と同様の方法で複合シートを得た。得ら
れた複合シートは、再生セルロース連続長繊維不織布／
合成繊維不織布の２層構造で、再生セルロース連続長繊
維不織布の混率は９．１重量％、目付け１１３ｇ／
ｍ2 、厚み０．７４ｍｍ、保アルコール率１０．８重量
％、湿潤剛軟率６６％、脱落繊維は非常に少なく５級、
湿潤摩擦は若干表面毛羽が発生し３級であった。得られ
た複合シートを銅アンモニア溶液で処理し、再生セルロ
ース連続長繊維不織布を溶解させ、合成繊維不織布を得
た。合成繊維不織布の目付けは１０２ｇ／ｍ2 、厚みは
０．６８ｍｍ、保アルコール率８．５７重量％であっ
た。Comparative Example 4 In the same manner as in Example 1, a regenerated cellulose continuous filament non-woven fabric having an average single fineness of 2.1 dtex, a basis weight of 10 g / m 2 and a thickness of 0.07 mm was obtained. [epsilon] -caprolactam was melted by heat, continuously spun to form a sheet, and then needle punched to obtain a synthetic fiber nonwoven fabric with an average single fineness of 3.3 dtex, a basis weight of 100 g / m < 2 > and a thickness of 0.92 mm. . A composite sheet was obtained in the same manner as in Example 1. The obtained composite sheet is a regenerated cellulose continuous filament non-woven fabric /
With a two-layer structure of synthetic fiber non-woven fabric, the mixture ratio of regenerated cellulose continuous long-fiber non-woven fabric is 9.1% by weight, and basis weight is 113 g /
m 2 , thickness 0.74 mm, alcohol retention 10.8% by weight, wet bending ratio 66%, very few dropped fibers, 5th grade,
The wet friction was grade 3 with some surface fluff. The obtained composite sheet was treated with a copper ammonia solution to dissolve the regenerated cellulose continuous long fiber non-woven fabric to obtain a synthetic fiber non-woven fabric. The synthetic fiber nonwoven fabric had a basis weight of 102 g / m 2 , a thickness of 0.68 mm, and an alcohol retention rate of 8.57% by weight.

【００４８】比較例５ 実施例１と同様の方法で平均単繊度２．１ｄｔｅｘ、目
付け８０ｇ／ｍ2 、厚み０．５４ｍｍの再生セルロース
連続長繊維不織布を得た。ポリエチレンテレフタレート
を熱溶融し、連続して紡糸し、シート形成させたのち、
ニードルパンチ処理を行い、平均単繊度４．４ｄｔｅ
ｘ、目付け３０ｇ／ｍ2 、厚み０．５７ｍｍの合成繊維
不織布を得た。実施例１と同様の方法で複合シートを得
た。得られた複合シートは、再生セルロース連続長繊維
不織布／合成繊維不織布の２層構造で、再生セルロース
連続長繊維不織布の混率は７０．８重量％、目付け１１
３ｇ／ｍ2 、厚み０．９８ｍｍ、保アルコール率１９．
８重量％、湿潤剛軟率１０％、脱落繊維は非常に少なく
５級、湿潤摩擦も表面毛羽の発生は非常に少なく５級で
あった。得られた複合シートを硫酸で処理し、再生セル
ロース連続長繊維不織布を溶解させ、合成繊維不織布を
得た。合成繊維不織布の目付けは３２ｇ／ｍ2 、厚みは
０．５１ｍｍ、保アルコール率３．９１重量％であっ
た。Comparative Example 5 By the same method as in Example 1, a regenerated cellulose continuous long fiber nonwoven fabric having an average single fineness of 2.1 dtex, a basis weight of 80 g / m 2 and a thickness of 0.54 mm was obtained. Polyethylene terephthalate is melted by heat, spun continuously to form a sheet,
Needle-punched, average fineness 4.4dte
x, a basis weight of 30 g / m 2 , and a synthetic fiber non-woven fabric having a thickness of 0.57 mm were obtained. A composite sheet was obtained in the same manner as in Example 1. The obtained composite sheet had a two-layer structure of regenerated cellulose continuous long-fiber non-woven fabric / synthetic fiber non-woven fabric, and the mixture ratio of regenerated cellulose continuous long-fiber non-woven fabric was 70.8% by weight.
3 g / m 2 , thickness 0.98 mm, alcohol retention 19.
The weight was 8% by weight, the wetting / softness was 10%, the number of shed fibers was extremely low, and the fluff generation was very low in the fifth grade. The obtained composite sheet was treated with sulfuric acid to dissolve the regenerated cellulose continuous filament non-woven fabric to obtain a synthetic fiber non-woven fabric. The synthetic fiber nonwoven fabric had a fabric weight of 32 g / m 2 , a thickness of 0.51 mm, and an alcohol retention rate of 3.91% by weight.

【００４９】比較例６ 実施例１と同様の方法で平均単繊度２．１ｄｔｅｘ、目
付け１２ｇ／ｍ2 、厚み０．０８ｍｍの再生セルロース
連続長繊維不織布を得た。ポリエチレンテレフタレート
を熱溶融し、連続して紡糸し、シート形成させたのち、
ニードルパンチ処理を行い、平均単繊度４．４ｄｔｅ
ｘ、目付け１００ｇ／ｍ2 、厚み０．９２ｍｍの合成繊
維不織布を得た。実施例１と同様の方法で複合シートを
得た。得られた複合シートは、再生セルロース連続長繊
維不織布／合成繊維不織布の２層構造で、再生セルロー
ス連続長繊維不織布の混率は１０．５重量％、目付け１
１４ｇ／ｍ2 、厚み０．９３ｍｍ、保アルコール率４．
９重量％、湿潤剛軟率６２％、脱落繊維は非常に少なく
５級、湿潤摩擦は若干表面毛羽が発生し３級であった。
得られた複合シートを硫酸で処理し、再生セルロース連
続長繊維不織布を溶解させ、合成繊維不織布を得た。合
成繊維不織布の目付けは１０２ｇ／ｍ2 、厚みは０．８
６ｍｍ、保アルコール率３．７７重量％であった。Comparative Example 6 In the same manner as in Example 1, a regenerated cellulose continuous long fiber nonwoven fabric having an average single fineness of 2.1 dtex, a basis weight of 12 g / m 2 and a thickness of 0.08 mm was obtained. Polyethylene terephthalate is melted by heat, spun continuously to form a sheet,
Needle-punched, average fineness 4.4dte
x, a basis weight of 100 g / m 2 , and a thickness of 0.92 mm were obtained as a synthetic fiber nonwoven fabric. A composite sheet was obtained in the same manner as in Example 1. The obtained composite sheet had a two-layer structure of regenerated cellulose continuous long-fiber non-woven fabric / synthetic fiber non-woven fabric, and the mixture ratio of regenerated cellulose continuous long-fiber non-woven fabric was 10.5% by weight, and basis weight 1
14 g / m 2 , thickness 0.93 mm, alcohol retention 4.
The weight was 9% by weight, the wetting / softness was 62%, the amount of fibers dropped was very low, and the wet friction was in the third grade with some surface fluff.
The obtained composite sheet was treated with sulfuric acid to dissolve the regenerated cellulose continuous filament non-woven fabric to obtain a synthetic fiber non-woven fabric. The basis weight of synthetic fiber nonwoven fabric is 102 g / m 2 , and the thickness is 0.8
It was 6 mm and the alcohol retention rate was 3.77% by weight.

【００５０】比較例７ 実施例２と同様の方法で平均単繊度２．１ｄｔｅｘ、目
付け４０ｇ／ｍ2 、厚み０．４６ｍｍの再生セルロース
連続長繊維不織布を得た。ε−カプロラクタムを熱溶融
し、連続して紡糸し、シート形成させたのち、ニードル
パンチ処理を行い、平均単繊度３．３ｄｔｅｘ、目付け
４０ｇ／ｍ2 、厚み０．４３ｍｍの合成繊維不織布を得
た。実施例２と同様の方法で複合シートを得た。得られ
た複合シートは、再生セルロース連続長繊維不織布／合
成繊維不織布／再生セルロース連続長繊維不織布の３層
構造で、再生セルロース連続長繊維不織布の混率は６
５．６重量％、目付け１２２ｇ／ｍ2 、厚み１．１２ｍ
ｍ、保アルコール率２５．６重量％、湿潤剛軟率１１
％、脱落繊維は非常に少なく５級、湿潤摩擦も表面毛羽
の発生は非常に少なく５級であった。得られた複合シー
トを硫酸で処理し、再生セルロース連続長繊維不織布を
溶解させ、合成繊維不織布を得た。合成繊維不織布の目
付けは４２ｇ／ｍ2 、厚みは０．３７ｍｍ、保アルコー
ル率８．４重量％であった。Comparative Example 7 In the same manner as in Example 2, a regenerated cellulose continuous long fiber nonwoven fabric having an average single fineness of 2.1 dtex, a basis weight of 40 g / m 2 and a thickness of 0.46 mm was obtained. [epsilon] -caprolactam was heat-melted, continuously spun to form a sheet, and then needle punched to obtain a synthetic fiber nonwoven fabric having an average single fineness of 3.3 dtex, a basis weight of 40 g / m < 2 > and a thickness of 0.43 mm. . A composite sheet was obtained in the same manner as in Example 2. The obtained composite sheet has a three-layer structure of regenerated cellulose continuous long-fiber non-woven fabric / synthetic fiber non-woven fabric / regenerated cellulose continuous long-fiber non-woven fabric, and the mixing ratio of regenerated cellulose continuous long-fiber non-woven fabric is 6
5.6% by weight, basis weight 122 g / m 2 , thickness 1.12 m
m, alcohol retention 25.6% by weight, wet bending resistance 11
%, The number of fallen fibers was very low, and the number of occurrence of surface fluff was also very low in the case of wet rubbing. The obtained composite sheet was treated with sulfuric acid to dissolve the regenerated cellulose continuous filament non-woven fabric to obtain a synthetic fiber non-woven fabric. The basis weight of the synthetic fiber nonwoven fabric was 42 g / m 2 , the thickness was 0.37 mm, and the alcohol retention rate was 8.4% by weight.

【００５１】比較例８ 日本薬局方で指定される脱脂綿を準備した。再生セルロ
ース連続長繊維不織布の混率は０重量％、天然セルロー
ス繊維１００重量％、目付け２２１ｇ／ｍ2 、厚み１．
６１ｍｍ、保アルコール率２８．４重量％、湿潤剛軟率
１１％、脱落繊維は非常に多く１級、湿潤摩擦も表面毛
羽の発生が非常に多く１級であった。上記各実施例およ
び各比較例で得られたシートの構成および物性ととも
に、アルコール含浸清拭部材としての性能を評価した結
果を表１にまとめて示した。Comparative Example 8 Absorbent cotton specified by the Japanese Pharmacopoeia was prepared. The regenerated cellulose continuous long-fiber nonwoven fabric has a mixing ratio of 0% by weight, natural cellulose fibers 100% by weight, a basis weight of 221 g / m 2 , and a thickness of 1.
61 mm, alcohol retention 28.4% by weight, wet bending resistance 11%, very many dropped fibers were in the first grade, and surface fluff was also generated in the wet friction, and the grade was the first grade. Table 1 shows the results of evaluation of the performance as an alcohol-impregnated wiping member, as well as the configurations and physical properties of the sheets obtained in each of the examples and the comparative examples.

【００５２】[0052]

【表１】 [Table 1]

【００５３】表１から、本発明の複合シートは、保アル
コール率が抑制されているにもかかわらず、清拭時の皮
膚へのアルコール移行性に優れ、また清拭後の複合シー
トに残留するアルコール量が少なく、アルコールの無駄
が防止され、さらに湿潤剛軟率が高く、清拭時の取扱性
に優れ、繊維の脱落も少ないことがわかる。It can be seen from Table 1 that the composite sheet of the present invention is excellent in the ability to transfer alcohol to the skin during wiping and remains in the composite sheet after wiping although the alcohol retention rate is suppressed. It can be seen that the amount of alcohol is small, the waste of alcohol is prevented, the wet bending resistance is high, the handleability during wiping is excellent, and the fibers do not fall off.

【００５４】[0054]

【発明の効果】本願の請求項１〜３に係る複合シート
は、適度な吸液量を有し、清拭に十分な液体を保持しつ
つ、清拭後に複合シートに残留する液体量を減少させる
ことができ、また清拭時に繊維の脱落が少なく、さらに
シートを重ねた時のはがれ易さや液体に含浸した場合で
もコシが強く、へたることがなく、取扱性が良好であ
り、供される複合シートを得ることができる。このた
め、上記複合シートは、少なくとも低級アルコールを含
浸させた清拭用部材として特に有用である。EFFECTS OF THE INVENTION The composite sheet according to claims 1 to 3 of the present application has an appropriate amount of liquid absorption and retains a sufficient amount of liquid for wiping while reducing the amount of liquid remaining in the composite sheet after wiping. In addition, the fibers do not easily fall off during wiping, and they are easy to peel off when sheets are stacked and have a strong elasticity even when impregnated with a liquid. A composite sheet can be obtained. Therefore, the composite sheet is particularly useful as a wiping member impregnated with at least lower alcohol.

───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ テーマコート゛(参考） Ａ６１Ｐ 17/00 １０１ Ａ６１Ｐ 17/00 １０１ ４Ｌ０４７ 17/02 17/02 Ｂ３２Ｂ 5/26 Ｂ３２Ｂ 5/26 Ｄ０４Ｈ 3/10 Ｄ０４Ｈ 3/10 Ｂ Ｄ０６Ｍ 13/144 Ｄ０６Ｍ 13/144 Ｆターム(参考） 4C076 AA71 BB31 CC18 CC31 FF68 4C083 AC101 CC22 DD12 EE12 EE13 4C206 AA01 CA03 MA01 MA04 MA52 MA83 NA03 ZA89 ZA90 4F100 AK01B AL05A BA02 DG04A DG11B DG15A GB66 JA20A JB07 JL00 JL14 YY00 YY00A 4L033 AA02 AA07 AA08 AB07 AC10 AC15 BA11 4L047 AA08 AA12 AA21 AA23 AB03 BA03 BA04 BA10 CA05 CB01 CB07 CC03 ─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. 7 Identification code FI theme code (reference) A61P 17/00 101 A61P 17/00 101 4L047 17/02 17/02 B32B 5/26 B32B 5/26 D04H 3 / 10 D04H 3/10 B D06M 13/144 D06M 13/144 F term (reference) 4C076 AA71 BB31 CC18 CC31 FF68 4C083 AC101 CC22 DD12 EE12 EE13 4C206 AA01 CA03 MA01 MA04 MA52 MA83 NA03 ZA89 ZA90 4F100AAK02B05A15A11B02B01B02AK02B05A11B02AK02B05A11A02 JA20A JB07 JL00 JL14 YY00 YY00A 4L033 AA02 AA07 AA08 AB07 AC10 AC15 BA11 4L047 AA08 AA12 AA21 AA23 AB03 BA03 BA04 BA10 CA05 CB01 CB07 CC03

Claims (4)

【特許請求の範囲】[Claims] 【請求項１】 再生セルロース連続長繊維不織布と合成
繊維布帛を有する複合シートであって、該複合シートは
前記再生セルロース長繊維不織布を１０〜７０重量％含
み、その少なくとも片面は再生セルロース連続長繊維不
織布の面積率が８５％以上であり、かつ、該複合シート
の保アルコール率が５〜２０重量％である複合シート。1. A composite sheet comprising a regenerated cellulose continuous filament non-woven fabric and a synthetic fiber cloth, the composite sheet comprising 10 to 70% by weight of the regenerated cellulose continuous filament non-woven fabric, at least one surface of which is regenerated cellulose continuous filament. A composite sheet in which the area ratio of the non-woven fabric is 85% or more, and the alcohol retention rate of the composite sheet is 5 to 20% by weight. 【請求項２】 前記複合シートの湿潤剛軟率が１５〜５
０％である請求項１記載の複合シート。2. The wet bending resistance of the composite sheet is 15-5.
The composite sheet according to claim 1, which is 0%. 【請求項３】 前記複合シートの合成繊維布帛の保アル
コール率が７重量％以下である請求項１または２に記載
の複合シート。3. The composite sheet according to claim 1, wherein the synthetic fiber cloth of the composite sheet has an alcohol retention of 7% by weight or less. 【請求項４】 請求項１〜３のいずれかに記載の複合シ
ートに少なくとも低級アルコールを含浸させてなる清拭
用部材。4. A wiping member obtained by impregnating the composite sheet according to claim 1 with at least a lower alcohol.
JP2002178564A 2001-11-06 2002-06-19 Composite sheet and wiping member using the same Pending JP2003213558A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2002178564A JP2003213558A (en) 2001-11-06 2002-06-19 Composite sheet and wiping member using the same

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2001-341096 2001-11-06
JP2001341096 2001-11-06
JP2002178564A JP2003213558A (en) 2001-11-06 2002-06-19 Composite sheet and wiping member using the same

Publications (1)

Publication Number Publication Date
JP2003213558A true JP2003213558A (en) 2003-07-30

Family

ID=27666941

Family Applications (1)

Application Number Title Priority Date Filing Date
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Country Status (1)

Country Link
JP (1) JP2003213558A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010203178A (en) * 2009-03-05 2010-09-16 Japan Railway Construction Transport & Technology Agency Slab track structure and construction method therefor
JP2012211141A (en) * 2004-03-08 2012-11-01 L'oreal Sa Single-use cosmetic article
JP2016533476A (en) * 2013-09-26 2016-10-27 スリーエム イノベイティブ プロパティズ カンパニー Vapor sensor suitable for detecting residual alcohol in skin areas
JP2020048680A (en) * 2018-09-25 2020-04-02 日本製紙クレシア株式会社 Wet tissue using composite nonwoven fabric and production method of nonwoven fabric

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012211141A (en) * 2004-03-08 2012-11-01 L'oreal Sa Single-use cosmetic article
JP2010203178A (en) * 2009-03-05 2010-09-16 Japan Railway Construction Transport & Technology Agency Slab track structure and construction method therefor
JP2016533476A (en) * 2013-09-26 2016-10-27 スリーエム イノベイティブ プロパティズ カンパニー Vapor sensor suitable for detecting residual alcohol in skin areas
US10466219B2 (en) 2013-09-26 2019-11-05 3M Innovative Properties Company Vapor sensor suitable for detecting alcoholic residue at a skin site
JP2020048680A (en) * 2018-09-25 2020-04-02 日本製紙クレシア株式会社 Wet tissue using composite nonwoven fabric and production method of nonwoven fabric
JP7121619B2 (en) 2018-09-25 2022-08-18 日本製紙クレシア株式会社 Wet tissue using composite nonwoven fabric and method for producing composite nonwoven fabric

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