JPH108364A - Water-disintegrable conjugate fiber and nonwoven fabric, and water-absorbable article - Google Patents
Water-disintegrable conjugate fiber and nonwoven fabric, and water-absorbable articleInfo
- Publication number
- JPH108364A JPH108364A JP8181138A JP18113896A JPH108364A JP H108364 A JPH108364 A JP H108364A JP 8181138 A JP8181138 A JP 8181138A JP 18113896 A JP18113896 A JP 18113896A JP H108364 A JPH108364 A JP H108364A
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- JP
- Japan
- Prior art keywords
- water
- disintegrable
- fiber
- component
- starch
- 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.)
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Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、水崩壊繊性複合繊
維、詳しくは水崩壊性及び熱接着性の澱粉系高分子を１
成分に含む水崩壊性複合繊維及び、該繊維を用いて作製
した不織布及び吸収性物品に関するもので、特に水中に
投棄して廃棄処理ができる紙おむつ等の吸収性物品や掃
除布等に使用するのに好適である水崩壊性複合繊維に関
するものである。TECHNICAL FIELD The present invention relates to a water-disintegratable fibrous conjugate fiber, more specifically, a water-disintegrable and heat-adhesive starch-based polymer.
The present invention relates to a water-disintegratable conjugate fiber contained in a component, a nonwoven fabric and an absorbent article produced using the fiber, and is particularly used for an absorbent article such as a disposable diaper that can be discarded and discarded in water or a cleaning cloth. Water-disintegratable conjugate fiber suitable for
【０００２】[0002]
【従来の技術】水の存在で溶解，崩壊が起こる繊維とし
ては、ポリビニルアルコール繊維があり、繊維，不織布
等に加工されて種々の用途に使用されている。しかしな
がら、ポリビニルアルコール繊維は水に対する溶解度が
低く、８０℃以上の温水で溶解しなければならない為、
例えば水洗トイレなど室温の水への廃棄処理が困難であ
る。2. Description of the Related Art Polyvinyl alcohol fiber is one of the fibers that dissolves and disintegrates in the presence of water, and is processed into fibers, nonwoven fabrics and the like and used for various purposes. However, since polyvinyl alcohol fiber has low solubility in water and must be dissolved in warm water of 80 ° C. or higher,
For example, disposal in room temperature water such as a flush toilet is difficult.
【０００３】特開平０４−１００９１３号公報に、ポリ
ビニルアルコ−ル系重合体と澱粉とからなる生分解性繊
維が提案されている。しかし分解性が弱く、完全分解す
るのに期間が長いという問題と、繊維強度が低いという
問題があって、使用上の障害となっている。JP-A-04-100913 proposes a biodegradable fiber comprising a polyvinyl alcohol-based polymer and starch. However, there is a problem that the degradability is weak and a long period is required for complete decomposition and a problem that the fiber strength is low, which is an obstacle in use.
【０００４】また特開平０１−２６００１７号公報に
は、ケン化度９６モル％のＰＶＡ系ポリマーを鞘成分、
ケン化度８０〜９５モル％のＰＶＡ系ポリマーを芯成分
とした水崩壊性ＰＶＡ系複合繊維が提案されている。し
かしこの複合繊維は、低融点成分を鞘側に配置していな
いため熱接着性がない。Japanese Patent Application Laid-Open No. 01-260017 discloses a PVA polymer having a saponification degree of 96 mol% as a sheath component,
Water-disintegrable PVA-based composite fibers containing a PVA-based polymer having a saponification degree of 80 to 95 mol% as a core component have been proposed. However, this conjugate fiber does not have thermal adhesiveness because the low melting point component is not disposed on the sheath side.
【０００５】また特開平０７−１２６９１８号公報に
は、融点が２１０℃以上のポリビニルアルコール系ポリ
マーを鞘成分とし、融点が２１０℃未満の水溶性ポリマ
ーを芯成分となるように溶液紡糸法によって作製された
鞘芯型複合繊維が提案されている。この複合繊維は熱接
着可能であるが、鞘側のポリビニルアルコール系ポリマ
ーが８０℃以上の熱水でないと溶解しない事から、常温
の水に廃棄ができないという欠点を持っている。Japanese Patent Application Laid-Open No. 07-126918 discloses that a polyvinyl alcohol-based polymer having a melting point of 210 ° C. or higher is used as a sheath component, and a water-soluble polymer having a melting point of less than 210 ° C. is used as a core component by a solution spinning method. A sheath-core type composite fiber has been proposed. Although this composite fiber can be thermally bonded, it has a drawback that the polyvinyl alcohol-based polymer on the sheath side does not dissolve unless it is hot water of 80 ° C. or higher, so that it cannot be discarded in water at room temperature.
【発明が解決しようとする課題】接着性があり、常温の
水で簡単に溶解する性能を持ち、かつ高い強度を有する
水崩壊性繊維が望まれているが、従来の技術ではこれを
満足するものが得られていない。本発明の課題は、熱接
着性を有する水崩壊性複合繊維、不織布、吸収性物品を
提供することにある。There is a demand for a water-disintegrable fiber which has adhesive properties, has the ability to be easily dissolved in water at ordinary temperature, and has high strength, but the prior art satisfies this requirement. Things have not been obtained. It is an object of the present invention to provide a water-disintegratable conjugate fiber, a nonwoven fabric, and an absorbent article having a thermal adhesive property.
【０００６】[0006]
【発明を解決するための手段】本発明者らは、上記課題
を解決すべく、鋭意検討を重ねた結果、下記水崩壊性複
合繊維を使用することにより、所期の目的を達成するこ
とを知り本発明を完成するに至った。本発明は、次の構
成を有する。 （１）水崩壊性樹脂組成物からなる第１成分と、熱可塑
性樹脂からなる第２成分との複合繊維であって、前記第
１成分が繊維表面の少なくとも一部を長さ方向に連続し
て存在するように配された水崩壊性複合繊維。 （２）水崩壊性樹脂組成物が、澱粉系高分子と、酢酸ビ
ニルと官能基を含まない不飽和モノマーとの共重合体を
部分加水分解した共重合体とからなる組成物である前記
（１）項に記載の水崩壊性複合繊維。 （３）官能基を含まない不飽和モノマーが、エチレン、
プロピレン、イソブチレンまたはスチレンのなかから選
ばれた少なくとも１種の官能基を含まない不飽和モノマ
ーであり、部分加水分解した共重合体のケン化度が７８
〜９８％であり、かつ、該部分加水分解した共重合体が
水崩壊性複合樹脂組成物に対して３０〜７０重量％含ま
れている前記（２）項に記載の水崩壊性複合繊維。 （４）捲縮を有する前記（１）〜（３）項に記載の水崩
壊性複合繊維。 （５）前記（１）〜（４）項に記載の水崩壊性複合繊維
を用いた不織布。 （６）前記（１）〜（４）項に記載の水崩壊性複合繊維
を含む不織繊維集合体について、少なくとも該水崩壊性
複合繊維の第１成分を水で湿潤することによって前記繊
維同士を接着させることを特徴とする不織布の製法。 （７）前記（１）〜（５）項に記載の水崩壊性複合繊維
または不織布を材料として用いた吸収性物品。Means for Solving the Problems The present inventors have conducted intensive studies in order to solve the above-mentioned problems, and as a result, have found that the intended purpose is achieved by using the following water-disintegratable conjugate fiber. The present invention has been completed. The present invention has the following configuration. (1) A composite fiber of a first component composed of a water-disintegrable resin composition and a second component composed of a thermoplastic resin, wherein the first component continuously extends at least a part of the fiber surface in a length direction. Water-disintegratable conjugate fiber arranged to be present. (2) The water-disintegrable resin composition is a composition comprising a starch polymer and a copolymer obtained by partially hydrolyzing a copolymer of vinyl acetate and an unsaturated monomer having no functional group. The water-disintegrable conjugate fiber according to the item 1). (3) The unsaturated monomer having no functional group is ethylene,
It is an unsaturated monomer containing no at least one functional group selected from propylene, isobutylene and styrene, and the partially hydrolyzed copolymer has a saponification degree of 78.
The water-disintegrable composite fiber according to the above item (2), wherein the content of the partially hydrolyzed copolymer is from 30 to 70% by weight based on the water-disintegrable composite resin composition. (4) The water-disintegrable conjugate fiber according to the above (1) to (3), which has crimps. (5) A nonwoven fabric using the water-disintegrable conjugate fiber according to the above (1) to (4). (6) With respect to the nonwoven fiber aggregate containing the water-disintegratable conjugate fiber according to the above (1) to (4), the fibers are connected to each other by wetting at least a first component of the water-disintegratable conjugate fiber with water. A method for producing a nonwoven fabric, characterized in that a nonwoven fabric is bonded. (7) An absorbent article using the water-disintegratable conjugate fiber or the nonwoven fabric according to the above (1) to (5) as a material.
【０００７】以下、本発明を詳細に説明する。本発明の
水崩壊性繊維材料の第１成分として用いられる水崩壊性
樹脂組成物中の１種である澱粉系高分子としては、玉蜀
黍澱粉，ワラビ澱粉，葛澱粉，馬鈴薯澱粉，小麦澱粉，
キッサバ澱粉，サゴ澱粉，タピオカ澱粉，蜀黍，豆澱
粉，ハス澱粉，ヒシ澱粉，甘藷澱粉等の少なくとも１種
以上を熱変性した熱可塑性を有する均一溶融体を例示で
きる。熱変性は、好ましくは、水分を５〜３０重量％含
んだ澱粉を密閉空間において水分を保持しながら、６０
〜３００ＭＰａの高圧下に、８０〜２９０℃で熱処理し
て行うがこれに限定されない。これ以外の澱粉系高分子
としては化学変性澱粉誘導体（アリルエ−テル化澱粉，
カルボキシメチルエ−テル化澱粉，ヒドロキシエチルエ
−テル化澱粉，ヒドロキシプロピルエ−テル化澱粉，メ
チルエ−テル化澱粉，リン酸架橋澱粉，ホルムアルデヒ
ド架橋澱粉，エピクロルヒドリン架橋澱粉，アクロレイ
ン架橋澱粉，アセト酢酸エステル化澱粉，酢酸エステル
化澱粉，コハク酸エステル化澱粉，キサトゲン酸エステ
ル化澱粉，硝酸エステル化澱粉，尿素リン酸エステル化
澱粉，リン酸エステル化澱粉）、化学分解変性澱粉（ジ
アルデヒド澱粉、酸処理澱粉，次亜塩素酸酸化澱粉
等），酵素変性澱粉（加水分解デキストリン，酵素分解
デキストリン，アミロ−ス等）、物理的変性澱粉（α−
澱粉，分別アミロ−ス，湿熱処理澱粉等）が例示できる
が、溶融押出の加工性の点からは、熱変性澱粉の使用が
最も好ましい。Hereinafter, the present invention will be described in detail. One of the starch-based polymers in the water-disintegrable resin composition used as the first component of the water-disintegrable fiber material of the present invention includes corn starch, bracken starch, kuzu starch, potato starch, wheat starch, and the like.
A homogeneous melt having thermoplasticity obtained by thermally denaturing at least one kind such as kissava starch, sago starch, tapioca starch, corn, bean starch, lotus starch, hishi starch and sweet potato starch can be exemplified. The heat denaturation is preferably carried out by keeping the starch containing 5 to 30% by weight of moisture in a closed space while maintaining the moisture in 60%.
Heat treatment is performed at 80 to 290 ° C. under a high pressure of up to 300 MPa, but the invention is not limited to this. Other starch-based polymers include chemically modified starch derivatives (allyl-etherified starch,
Carboxymethyl etherified starch, hydroxyethyl etherified starch, hydroxypropyl etherated starch, methyl etherified starch, phosphoric acid crosslinked starch, formaldehyde crosslinked starch, epichlorohydrin crosslinked starch, acrolein crosslinked starch, acetoacetate Starch, acetate-esterified starch, succinate-starch, xatogenate-starch, nitrate-starch, urea-phosphate-starch, phosphate-starch, chemically-degraded starch (dialdehyde starch, acid-treated) Starch, hypochlorite oxidized starch, etc.), enzyme-modified starch (hydrolyzed dextrin, enzyme-decomposed dextrin, amylose, etc.), physically modified starch (α-
Starch, fractionated amylose, wet heat-treated starch, etc.), but from the viewpoint of melt extrusion processability, the use of heat-modified starch is most preferred.
【０００８】また、本発明で使用する水崩壊性樹脂組成
物に含まれる部分加水分解した共重合体としては、酢酸
ビニルと、エチレン、プロピレン、イソブチレンまたは
スチレンなどの官能基を含まない不飽和モノマーとを共
重合させたのち、該共重合体の有する酢酸ビニルエスエ
ル基を加水分解して得られる共重合体が使用できる。本
発明では、加水分解して得られる共重合体のケン化度が
７８〜９８％であるときに効果が大きく、より好ましく
は８５％〜９８％であり、さらに好ましくは９０％〜９
８％である。本発明では、部分加水分解した共重合体の
配合量が、水崩壊性、加工性の点から、水崩壊性樹脂組
成物に対し３０〜７０重量％であるときに効果は大き
く、より好ましくは４０〜６０重量％である。本発明で
は、使用する官能基を含まない不飽和モノマーは特に限
定されないが、エチレン、プロプレン、イソブチレンま
たはスチレンのなかから選ばれる少なくとも１種の官能
基を含まない不飽和モノマーを使用するのが好ましい。[0008] The partially hydrolyzed copolymer contained in the water-disintegrable resin composition used in the present invention includes vinyl acetate and an unsaturated monomer containing no functional group such as ethylene, propylene, isobutylene or styrene. After copolymerizing the above, a copolymer obtained by hydrolyzing the vinyl acetate group of the copolymer can be used. In the present invention, the effect is large when the degree of saponification of the copolymer obtained by hydrolysis is 78 to 98%, more preferably 85% to 98%, further preferably 90% to 9%.
8%. In the present invention, from the viewpoint of water disintegration and processability, the effect is large when the blending amount of the partially hydrolyzed copolymer is 30 to 70% by weight based on the water disintegrable resin composition, and more preferably. It is 40 to 60% by weight. In the present invention, the unsaturated monomer containing no functional group to be used is not particularly limited, but it is preferable to use an unsaturated monomer containing no at least one functional group selected from ethylene, propylene, isobutylene or styrene. .
【０００９】第２成分に使用する熱可塑性樹脂として
は、低密度ポリエチレン、直鎖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
ン系樹脂、ナイロン６、ナイロン６６などのポリアミド
系樹脂、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、共重合ポリエステルなどのポリエステル
系樹脂などの汎用樹脂が例示でき、これらを１種または
２種以上を併用することができる。The thermoplastic resin used for the second component includes polyolefin resins such as low density polyethylene, linear low density polyethylene, high density polyethylene and polypropylene; polyamide resins such as nylon 6 and nylon 66; polyethylene terephthalate; General-purpose resins such as polyester resins such as polybutylene terephthalate and copolyester can be exemplified, and one or more of these can be used in combination.
【００１０】本発明の水崩壊性複合繊維における第１成
分／第２成分の比は、重量比で７０／３０〜３０／７０
の範囲が好ましい。第２成分に対する第１成分の重量比
が３０／７０より小さいと該水崩壊性複合繊維から不織
布を製造するときに実用に耐える接着性能が得られにく
く、第２成分に対する第１成分の重量比が７０／３０よ
り大きいと、該水崩壊性複合繊維を使用して得られた不
織布は十分な強度を得られにくい。接着と強度のバラン
スがより好ましいのは、第１成分／第２成分の重量比が
６０／４０〜４０／６０の範囲である。In the water-disintegratable conjugate fiber of the present invention, the ratio of the first component / the second component is 70/30 to 30/70 by weight.
Is preferable. When the weight ratio of the first component to the second component is less than 30/70, it is difficult to obtain practically useful adhesive performance when producing a nonwoven fabric from the water-disintegratable conjugate fiber, and the weight ratio of the first component to the second component is low. Is greater than 70/30, it is difficult for the nonwoven fabric obtained using the water-disintegrable conjugate fiber to obtain sufficient strength. The balance between adhesion and strength is more preferable when the weight ratio of the first component / the second component is in the range of 60/40 to 40/60.
【００１１】前述した澱粉系高分子と、部分加水分解し
た共重合体を配合し、これら以外に必要に応じて可塑
剤，艶消し剤，顔料，光安定剤，熱安定剤，酸化防止剤
等の各種添加剤を本発明の効果を損なわない範囲で添加
する事ができる。例えば、可塑剤を添加する事で、曳糸
性を向上する事ができる。可塑剤としては、下記のグリ
コール類またはエタノールアミンの化合物を例示する事
ができる。具体的には、エチレングリコール、トリメチ
レングリコール、テトラメチレングリコール、ペンタメ
チレングリコール、ヘキサメチレングリコール、プロピ
レングリコール、グリセリン、２，３−ブタジエンオー
ル、１，３−ブタンジオール、ジエチレングリコール、
トリエチレングリコール、１，７−ヘプタンジオール、
シクロヘキサン−１，２−ジオール、シクロヘキサン−
１，４−ジオール、ピナコール、ヒドロベンゾイン、ベ
ンズピナコールを例示できる。The above-mentioned starch polymer and a partially hydrolyzed copolymer are blended, and if necessary, a plasticizer, a matting agent, a pigment, a light stabilizer, a heat stabilizer, an antioxidant, etc. Can be added in a range that does not impair the effects of the present invention. For example, the spinnability can be improved by adding a plasticizer. Examples of the plasticizer include the following compounds of glycols or ethanolamine. Specifically, ethylene glycol, trimethylene glycol, tetramethylene glycol, pentamethylene glycol, hexamethylene glycol, propylene glycol, glycerin, 2,3-butadieneol, 1,3-butanediol, diethylene glycol,
Triethylene glycol, 1,7-heptanediol,
Cyclohexane-1,2-diol, cyclohexane-
Examples thereof include 1,4-diol, pinacol, hydrobenzoin, and benzpinacol.
【００１２】本発明の水崩壊性複合繊維は複合紡糸法で
紡糸し、延伸，捲縮等を付与する事もできる。捲縮を付
与する手段としては、多くの場合、延伸工程中にクリン
パーで付与する方法が取られるが、本発明はこれに限定
されない。捲縮を付与することでカーディング性を向上
でき、なおかつ捲縮を有した繊維から作られた布帛に嵩
高性を与えることができる。なお、捲縮の程度は、一般
に、繊維の繊度や繊維長を考慮して選択され、通常２０
ｄ／ｆ以下の繊維には、１インチあたり１０〜１５山の
捲縮が付与されるが、本発明はこれに限定されるもので
はない。。また、ラウリルホスフェ−トカリウムの如き
表面処理剤を後加工で付着させることにより、耐ガス変
色性を向上させることも可能である。The water-disintegratable conjugate fiber of the present invention can be spun by a conjugate spinning method and imparted with stretching, crimping and the like. As a means for imparting crimp, a method of imparting with a crimper during the stretching step is often used, but the present invention is not limited to this. By providing crimps, carding properties can be improved, and bulkiness can be imparted to a fabric made of fibers having crimps. The degree of crimping is generally selected in consideration of the fineness of the fiber and the fiber length, and is usually 20 times.
Fibers of d / f or less are provided with 10 to 15 crimps per inch, but the present invention is not limited to this. . Further, by attaching a surface treating agent such as potassium lauryl phosphate by post-processing, it is possible to improve the gas discoloration resistance.
【００１３】本発明の水崩壊性複合繊維は、従来から作
製されている熱可塑性複合繊維とは異なり、例えば、並
列型にあっては一方の成分に、また、鞘芯型にあっては
鞘側成分に澱粉系高分子を主体とした水崩壊性樹脂組成
物を使用している為、明確な融点を持っていない。その
ため通常熱可塑性繊維に行われるスルーエアー加工だけ
では熱接着が難しい。しかし澱粉系高分子は水分の存在
下で湿潤し軟化する特徴を持つので、本発明の水崩壊性
複合繊維を例えば水蒸気などで加湿し、第１成分中の澱
粉系高分子を軟化させることで、水崩壊性複合繊維同士
を接着させる。この後に、繊維に付着し残存している水
分を蒸発させ、接着を強化する目的を兼ねてスルーエア
ー加工等を施すのも良い。スルーエアー加工等を行う際
の処理温度は、水崩壊性複合繊維中の第２成分を構成す
る熱可塑性樹脂の融点を越えない範囲に設定するのが好
ましい。また、澱粉系高分子を湿潤する方法としては、
水蒸気，水中浸漬等の方法が採用できるが、本発明はこ
れらに限定されるものではない。The water-disintegratable conjugate fiber of the present invention is different from a conventionally produced thermoplastic conjugate fiber. For example, the side-by-side type has one component and the sheath-core type has a sheath. Since a water-disintegrable resin composition mainly composed of a starch-based polymer is used as a side component, it does not have a clear melting point. For this reason, thermal bonding is difficult only by through-air processing that is usually performed on thermoplastic fibers. However, since the starch-based polymer has a feature of wetting and softening in the presence of moisture, the water-disintegratable conjugate fiber of the present invention is humidified with, for example, steam to soften the starch-based polymer in the first component. Then, the water-disintegrable conjugate fibers are bonded to each other. Thereafter, through air processing or the like may be performed for the purpose of evaporating water remaining on the fiber and evaporating the remaining water to strengthen the adhesion. The processing temperature at the time of performing the through-air processing or the like is preferably set to a range not exceeding the melting point of the thermoplastic resin constituting the second component in the water-disintegratable conjugate fiber. Also, as a method of wetting the starch-based polymer,
Although methods such as steam and immersion in water can be adopted, the present invention is not limited to these.
【００１４】本発明の水崩壊性複合繊維は、その複合の
形態が並列型または鞘芯型であるときに、接着強度等の
点で本発明の効果がより大きい。本発明の不織布は、前
記水崩壊性複合繊維から構成され、かつ構成繊維同士が
部分的に接着されているものであるが、該構成繊維同士
は３次元的に交絡されることにより不織布の強度が更に
向上する。交絡はニードルパンチ加工などで付与するこ
とができる。本発明の不織布の製造においては、具体的
には、得られた本発明の水崩壊性複合繊維を原綿とし、
エアレイド法によってウェブを作製し、このウェブをス
チームに曝す事で構成繊維同士を部分的に軟化接着さ
せ、更にスルーエアー加工機にかけるなどの工程を例示
できる。The water-disintegratable conjugate fiber of the present invention has a greater effect of the present invention in terms of adhesive strength and the like when the conjugate form is a parallel type or a sheath-core type. The nonwoven fabric of the present invention is composed of the water-disintegratable conjugate fiber, and the constituent fibers are partially bonded to each other. Is further improved. Entanglement can be given by needle punching or the like. In the production of the nonwoven fabric of the present invention, specifically, the obtained water-disintegratable conjugate fiber of the present invention is used as raw cotton,
Examples of such a process include producing a web by an airlaid method, exposing the web to steam to partially soften and bond the constituent fibers together, and then applying a through-air processing machine.
【００１５】本発明の吸収性物品は、前記複合繊維から
構成されており、好ましくは、液体透過性の表面材層，
液体不透過性のバックシート層及び表面材層とバックシ
ート層の間の吸収材からなる。しかし本発明はこれらの
構成に限定されるものではなく、さらにこれらの層の間
に単層もしくは複数の層を付加挿入することも出来る。
こうした付加挿入層は、吸収材への体液の迅速な移行を
司る機能，体液の逆戻りを防止する機能等を持ってい
る。表面材は液体透過性を充分に有するもので、多岐に
及ぶ要求性能に合わせて編織物，不織布，または多孔性
フィルムや、これらの複合材料等が選択、使用出来る。
バックシートは、液体不透過性のシートであり、蒸気を
透過させる蒸気透過性のシートでなおかつ、多量の水に
よって溶解する素材を使用する事が好ましい。或いは不
織布とシートの複合化物も用いる事が出来る。付加挿入
層は液体の拡散を促進する機能を付与させる場合、ティ
ッシュ等が使用出来る。[0015] The absorbent article of the present invention is composed of the above-mentioned conjugate fiber, and is preferably a liquid-permeable surface material layer,
It consists of a liquid-impermeable backsheet layer and an absorbent between the surface material layer and the backsheet layer. However, the present invention is not limited to these configurations, and a single layer or a plurality of layers may be additionally inserted between these layers.
Such an additional insertion layer has a function of controlling the rapid transfer of bodily fluid to the absorbent, a function of preventing the bodily fluid from returning, and the like. The surface material has sufficient liquid permeability, and a knitted or woven fabric, a nonwoven fabric, a porous film, or a composite material thereof can be selected and used according to a wide variety of required performances.
The backsheet is a liquid-impermeable sheet, preferably a vapor-permeable sheet that allows vapor to permeate, and preferably uses a material that is soluble by a large amount of water. Alternatively, a composite of a nonwoven fabric and a sheet can also be used. When the additional insertion layer is provided with a function of promoting the diffusion of the liquid, a tissue or the like can be used.
【００１６】吸収材は、セルロース繊維、高吸水性ポリ
マーを均一に混ぜた組成をとるのが一般的であるが、さ
らに水ぬれ時の型保持の為に、水溶性バインダーとして
水崩壊性複合繊維を混ぜる事も出来る。セルロース繊維
としては吸収材に従来から用いられているものであれば
特に制限はない。The absorbent generally has a composition in which a cellulose fiber and a superabsorbent polymer are uniformly mixed. However, in order to retain the mold when wet, the water-disintegrating composite fiber is used as a water-soluble binder. Can also be mixed. The cellulose fiber is not particularly limited as long as it has been conventionally used as an absorbent.
【００１７】高吸水性ポリマーは、吸水体に従来から用
いられているものであれば特に制限はないが、例えば澱
粉−アクリル酸グラフト重合体，ポリアクリル酸ソーダ
架橋体，イソブチレン−無水マレイン酸共重合体または
そのケン化物，ＰＶＡ架橋体，ポリアクリル酸塩等が使
用出来る。以下本発明を実施例の性能を比較例と比較し
ながら詳細に説明する。ただし、本発明は以下の実施例
のみに限定されるものではない。The superabsorbent polymer is not particularly limited as long as it has been conventionally used as a water absorbent. For example, a starch-acrylic acid graft polymer, a crosslinked sodium polyacrylate, and isobutylene-maleic anhydride may be used. A polymer or a saponified product thereof, a cross-linked PVA, a polyacrylate and the like can be used. Hereinafter, the present invention will be described in detail while comparing the performance of Examples with Comparative Examples. However, the present invention is not limited to only the following examples.
【００１８】[0018]
［水崩壊性複合繊維の作製］コ−ンスタ−チを原料とし
て熱変性をした水分１０重量％を含む澱粉を６０重量
％、エチレン３０モル％とポリ酢酸ビニ−ル７０モル％
の共重合体のケン化度が９８％の部分加水分解共重合体
を４０重量％の組成比で混ぜた後、造粒し、ペレットと
したものを鞘成分に、メルトフロ−レ−ト１６ｇ／１０
分（２３０℃、２．１６ｋｇｆ）のポリプロピレンを芯
成分として、鞘芯型複合紡糸用の孔径０．８ｍｍφ，孔
数３５０の口金と圧縮比２．０のフルフライトスクリュ
−を使用し、溶融紡糸を行った。この方法で３ｄ／ｆの
複合繊維を得た。なお、表面仕上剤としてラウリルホス
フェ−トカリウム塩を０．３重量％付着させた。チョッ
プは、この繊維を繊維長５ｍｍにカットして作製し、ス
テープルファイバーは、この繊維をクリンパ−で１２山
／２５ｍｍの捲縮を付与して繊維長３８ｍｍにカットし
て作製した。[Preparation of water-disintegratable conjugate fiber] 60% by weight of starch containing 10% by weight of water, which was heat-modified from a cone starch, 30% by mole of ethylene and 70% by mole of polyvinyl acetate
A partially hydrolyzed copolymer having a saponification degree of 98% was mixed at a composition ratio of 40% by weight, and the mixture was granulated and pelletized to obtain a melt flow rate of 16 g / 10
Melt (200 ° C., 2.16 kgf) using a full-flight screw having a hole diameter of 0.8 mmφ and a number of holes of 350 and a compression ratio of 2.0 for a sheath-core composite spinning using polypropylene as a core component. Was done. In this way, a composite fiber of 3 d / f was obtained. In addition, potassium lauryl phosphate was attached as a surface finishing agent in an amount of 0.3% by weight. The chop was prepared by cutting this fiber into a fiber length of 5 mm, and the staple fiber was prepared by applying a crimp of 12 fibers / 25 mm with a crimper to cut the fiber into a fiber length of 38 mm.
【００１９】［ニードルパンチ不織布の作製］水崩壊性
複合繊維（ステープルファイバー）をカード機に通し、
目付け２０ｇ／ｍ2のウェブを形成した後、公知のニー
ドルパンチ加工法を用いて繊維同士を交絡させ、つき固
める。この後、熱処理を行う事で、より接着性を上げる
事ができる。得られた不織布は使用される大きさにカッ
トし、サンプルもしくはサンプルのパーツとする事がで
きる。[Preparation of Needle Punched Nonwoven Fabric] A water-disintegratable conjugate fiber (staple fiber) is passed through a card machine,
After forming a web having a basis weight of 20 g / m 2 , the fibers are entangled with each other using a known needle punching method, and the fibers are compacted. Thereafter, by performing a heat treatment, the adhesiveness can be further improved. The obtained nonwoven fabric can be cut to the size to be used, and can be used as a sample or a part of the sample.
【００２０】［カードウェブ−熱処理による不織布の作
製］水崩壊性複合繊維（ステープルファイバー）をカー
ド機に通し、目付け２０ｇ／ｍ2のウェブを形成した
後、必要であればウェブに２ｋｇf/ｃｍ2のスチームを
５秒間当て、つぎに１００℃設定のスルーエアー加工機
で熱処理を１０秒間行い繊維間同士を固着させる。得ら
れた不織布は使用される大きさにカットし、サンプルも
しくはサンプルのパーツとする事ができる。[Card web-Preparation of non-woven fabric by heat treatment] The water-disintegratable conjugate fiber (staple fiber) is passed through a card machine to form a web having a basis weight of 20 g / m 2 , and if necessary, 2 kgf / cm 2 on the web. Is applied for 5 seconds, and then heat-treated for 10 seconds by a through-air processing machine set at 100 ° C. to fix the fibers together. The obtained nonwoven fabric can be cut to the size to be used, and can be used as a sample or a part of the sample.
【００２１】［エアレイド不織布の作製］水崩壊性複合
繊維（チョップ）を繊維長８ｍｍに切断し、乾燥状態で
機械的にほぐして単繊維化し、目付け２０ｇ／ｍ2のウ
ェブを連続的に形成した後、ウェブに２ｋｇf/ｃｍ2の
スチームを５秒間当て、つぎに１００℃設定のスルーエ
アー加工機で熱処理を１０秒間行い繊維間同士を固着さ
せる。得られた不織布は使用される大きさにカットし、
サンプルもしくはサンプルのパーツとする事ができる。[Preparation of Airlaid Nonwoven Fabric] A water-disintegratable conjugate fiber (chop) was cut into a fiber length of 8 mm, mechanically loosened in a dry state to form a single fiber, and a web having a basis weight of 20 g / m 2 was continuously formed. Thereafter, steam of 2 kgf / cm 2 is applied to the web for 5 seconds, and then heat treatment is performed for 10 seconds by a through-air processing machine set at 100 ° C. to fix the fibers together. The obtained non-woven fabric is cut to the size used,
Can be a sample or parts of a sample.
【００２２】［吸収性物品の作製］ 表面材の作製 ：表面材の面積，目付けは３２ｃｍ×１
２ｃｍ，２０ｇ／ｍ2 吸収材の作製 ：吸収材の面積，目付けは、３２ｃｍ×
１２ｃｍ，４００ｇ／ｍ2とし、吸収材はパルプ繊維と
澱粉−アクリル酸グラフト重合体（高分子吸収剤）及び
水崩壊性複合繊維を均一に混ぜたものをテ
ィッシュで包み作製した。 バックシートの作製：澱粉系高分子を使用して、Ｔダイ
から押出し、目付け５０ｇ／ｍ2のフィルムとした。 上記で作製した表面材、吸収材、バックシートを用いて
吸収性物品を作製した。[Preparation of Absorbent Article] Preparation of surface material: The surface material area and basis weight were 32 cm × 1.
Preparation of 2 cm, 20 g / m 2 absorbent: The area and basis weight of the absorbent are 32 cm ×
12 cm, 400 g / m 2 , and the absorbent is a mixture of pulp fibers, starch-acrylic acid graft polymer (polymer absorbent) and water-disintegrable composite fibers uniformly.
And wrapped in a dish. Production of backsheet: A starch-based polymer was extruded from a T-die into a film having a basis weight of 50 g / m 2 . An absorbent article was produced using the surface material, absorbent, and back sheet produced above.
【００２３】［繊維強度］本発明における繊維強度の定
義とその測定法は、ＪＩＳＬ−１０１５に準じ、単繊維
強度を試長２０ｍｍ，引張速度５０％／ｍｉｎで引張試
験を行った。[Fiber strength] The definition of fiber strength and the method for measuring the fiber strength in the present invention were based on JISL-1015, and a tensile test was performed on a single fiber strength at a test length of 20 mm and a tensile speed of 50% / min.
【００２４】［水崩壊性の測定］以下の疑似水洗トイレ
を使用する。評価に用いた疑似トイレは、縦０．３ｍ×
横０．３ｍ×高さ０．５ｍの水槽の底中央に、直径３ｃ
ｍの孔を持ち、その孔に水止め用コックがついたホース
を接続した構造である。この水槽は、水槽の底からホー
スの開放口までの高さを０．４５ｍとなるように設置す
る。さらに以下のデータを収集し、水崩壊性を判定し
た。 （１）前記吸収性物品サンプルが０．３ｍ×０．３ｍの
面積を占めるまで分散するのにかかる時間（分散時
間）。 （２）サンプルが（１）の条件まで分散した後、疑似ト
イレの水をホースから流出させ 、水槽の水が完全に排
出した後、ホース中に詰まり残存したサンプルを採取
し、充分乾燥した後、重量を測定する。この値と初期絶
乾重量とから残存比率（％）を算出する。残存比率は次
式より求められる。 残存比率（ホースに目詰まりしたサンプルの重量比
（％））＝［ホースに目詰まりしたサンプルの絶乾重量
（ｇ）／サンプルの初期絶乾重量（ｇ）］×１００ 測定の手順は以下の通りである。 １）水止めコックを閉じ、水がホースから流れ出さない
ようにする。 ２）この水槽に水を９ｄｍ3注ぐ。 ３）サンプルに純水を０．０５ｄｍ3しみこませる。 ４）評価サンプルを水槽に投入し、それと同時に上記
（１）の条件までの時間を測定する。 ５）上記（１）の条件まで分散した後、２７ｄｍ3の水
を水槽に加え、水止めコックを一気に全開にする。 ６）水が完全に排出した後、ホースに残存したサンプル
を採取し重量を測定する。 ７）水崩壊性の総合評価は（１）の分散時間と（２）の
残存比率から判断する。 本発明の水崩壊性繊維及び、この繊維を使用して作られ
た不織布，吸収性物品は、主に使い捨て用途に使用され
る事を念頭においているので、トイレにそのまま投棄し
ても問題なく処理できるだけの水崩壊性能を有している
かをチェックした。[Measurement of water disintegration property] The following simulated flush toilet is used. The pseudo toilet used for evaluation is 0.3mx vertical
In the center of the bottom of the water tank 0.3m wide x 0.5m high, 3c in diameter
It has a structure in which a hose with a hole for m and a cock for water stop is connected to the hole. This water tank is installed so that the height from the bottom of the water tank to the opening of the hose is 0.45 m. Further, the following data was collected to determine the water disintegration property. (1) Time required for the absorbent article sample to be dispersed until occupying an area of 0.3 m × 0.3 m (dispersion time). (2) After the sample is dispersed to the condition of (1), the water of the pseudo toilet is drained from the hose, and after the water in the water tank is completely drained, the remaining sample clogged in the hose is collected and dried sufficiently. , Measure the weight. The residual ratio (%) is calculated from this value and the initial absolute dry weight. The remaining ratio can be obtained from the following equation. Residual ratio (weight ratio of sample clogged in hose (%)) = [absolute dry weight of sample clogged in hose (g) / initial absolute dry weight of sample (g)] × 100 It is on the street. 1) Close the water stopcock to prevent water from flowing out of the hose. 2) Pour 9 dm 3 of water into this water tank. 3) Soak the sample in 0.05 dm 3 of pure water. 4) The evaluation sample is put into a water tank, and at the same time, the time until the condition (1) is measured. 5) After dispersing to the condition of the above (1), 27 dm 3 of water is added to the water tank, and the water stop cock is fully opened at a stretch. 6) After the water is completely drained, collect the sample remaining in the hose and measure the weight. 7) The overall evaluation of water disintegration is determined from the dispersion time in (1) and the residual ratio in (2). The water-disintegrable fiber of the present invention and nonwoven fabrics and absorbent articles made by using the fiber are mainly intended for use in disposable applications, so that they can be disposed of without any problem even when discarded in a toilet. It was checked whether the water disintegration performance was as high as possible.
【００２５】実施例１（不織布） 水崩壊性複合繊維を上記のエアレイド不織布作製法によ
って不織布とした。この不織布を水０．０５ｄｍ3に浸
漬してから疑似トイレに投棄し、水崩壊性能を調査し
た。結果、不織布の接着が緩やかになり、わずかな水の
流れで、繊維がバラバラに開繊された。芯成分は非水崩
壊性である為、水中に残存していた。ホースのコックを
開き水を放出し残存量をみたところ、ホースには何も残
っておらず全て排出された。結果、水崩壊性は良好であ
った（詳細結果を表３に示す）。Example 1 (non-woven fabric) A water-disintegratable conjugate fiber was formed into a non-woven fabric by the above-described method for producing an air-laid non-woven fabric. This nonwoven fabric was immersed in 0.05 dm 3 of water and then dumped in a pseudo toilet, and the water disintegration performance was investigated. As a result, the adhesion of the nonwoven fabric became loose, and the fibers were spread apart with a slight flow of water. Since the core component was non-water-disintegrable, it remained in water. When the cock of the hose was opened to release water and the remaining amount was checked, nothing was left in the hose and all was discharged. As a result, water disintegration was good (detailed results are shown in Table 3).
【００２６】実施例２（吸収性物品） 上記の吸収性物品作製法に記した方法で作製した表面
材、吸収材、バックシートを用いて吸収性物品を作製し
た。この吸収性物品に水０．０５ｄｍ3を吸収させてか
ら、疑似トイレに投棄し、水崩壊性能を調査した。結
果、バックシートは、水に溶解して消失したが、吸収材
を構成するパルプ，高分子吸収剤はそのまま水中に残
り、次第に分散していった。表面材の芯成分は非水崩壊
性である為、水中に残存していた。ホースのコックを開
き、サンプルの残存量をみたが、ホースには残らずに排
出された。結果、水崩壊性は良好であった（詳細結果は
表３に示す）。Example 2 (Absorptive article) An absorbent article was produced using the surface material, absorbent and back sheet produced by the method described in the above absorbent article production method. After absorbing 0.05 dm 3 of water into the absorbent article, the absorbent article was discarded in a dummy toilet, and the water disintegration performance was examined. As a result, the backsheet was dissolved in water and disappeared, but the pulp and the polymer absorbent constituting the absorbent remained in the water as they were and gradually dispersed. Since the core component of the surface material was non-water-disintegrable, it remained in water. The hose cock was opened and the remaining amount of the sample was checked, but the sample was discharged without remaining in the hose. As a result, the water disintegration property was good (detailed results are shown in Table 3).
【００２７】実施例３（不織布） 水崩壊性複合繊維を上記のカードウェブ−熱処理による
不織布作製法によって不織布とした。この不織布を水
０．０５ｄｍ3に浸漬してから疑似トイレに投棄し、水
崩壊性能を調査した。結果、不織布の接着は緩やかにな
りわずかな水の流れで、繊維がバラバラに開繊された。
芯成分は非水崩壊性である為、水中に残存していた。ホ
ースのコックを開き、水を放出し、残存量をみたとこ
ろ、ホースには何も残っておらず全て排出された。結
果、水崩壊性は良好であった（詳細結果を表３に示
す）。Example 3 (non-woven fabric) A water-disintegratable conjugate fiber was formed into a non-woven fabric by the above-mentioned card web-heat treatment method. This nonwoven fabric was immersed in 0.05 dm 3 of water and then dumped in a pseudo toilet, and the water disintegration performance was investigated. As a result, the bonding of the nonwoven fabric became loose, and the fibers were broken apart with a slight flow of water.
Since the core component was non-water-disintegrable, it remained in water. When the cock of the hose was opened, water was discharged, and the remaining amount was measured. As a result, nothing was left in the hose and all of the water was discharged. As a result, water disintegration was good (detailed results are shown in Table 3).
【００２８】実施例４（繊維） 上記の水崩壊性複合繊維の紡糸方法を使用して、３ｄ／
ｆの鞘芯型複合繊維を作製して、単糸強度を測定した。
結果、３．２ｇ／ｄとなり、ＰＥ／ＰＰの複合繊維程度
の強力を示した。Example 4 (Fiber) 3d /
The sheath-core type composite fiber of f was produced, and the single yarn strength was measured.
As a result, it was 3.2 g / d, indicating a strength as high as a composite fiber of PE / PP.
【００２９】比較例１（不織布） 熱可塑性複合繊維（ＰＥ／ＰＰの複合、３ｄ／ｆ×５ｍ
ｍのチョップ）をエアレイド不織布作製法によって不織
布とした（このとき、スルーエアー加工機の設定温度は
１３７℃とした）。この不織布を水０．０５ｄｍ3中に
浸漬してから疑似トイレに投棄し、水崩壊性能を調査し
た。結果、鞘芯ともに非水崩壊性であった為、水面を浮
遊していた。ホースのコックを開き水を放出しても流れ
出さす残存したままとなった（詳細結果を表３に示
す）。Comparative Example 1 (nonwoven fabric) Thermoplastic composite fiber (PE / PP composite, 3d / f × 5m)
m chop) was made into a nonwoven fabric by an air-laid nonwoven fabric manufacturing method (at this time, the set temperature of the through-air processing machine was 137 ° C). This nonwoven fabric was immersed in 0.05 dm 3 of water and then dumped in a pseudo toilet, and the water disintegration performance was investigated. As a result, both sheath cores were non-water-disintegrable, so they floated on the water surface. Even if the cock of the hose was opened and the water was released, the water remained flowing out (detailed results are shown in Table 3).
【００３０】比較例２（吸収性物品） 熱可塑性複合繊維（ＰＥ／ＰＰの複合、３ｄ／ｆ×５ｍ
ｍのチョップ）を使用して作製した表面材、吸収材、バ
ックシートを用いて吸収性物品を作製した。この吸収性
物品に水０．０５ｄｍ3を含浸させてから、疑似トイレ
に投棄し、水崩壊性能を調査した。バックシート，表面
材は水中でなんら変化を示さなかったが、吸収材は水分
を吸収して膨潤した。ホースのコックを開き、水を流し
たが全く溶解していない為流れなかった（詳細結果は表
３に示す）。Comparative Example 2 (Absorptive article) Thermoplastic composite fiber (PE / PP composite, 3d / f × 5m)
m chop) to produce an absorbent article using the surface material, absorbent, and back sheet. The absorbent article was impregnated with 0.05 dm 3 of water and then dumped in a dummy toilet, and the water disintegration performance was examined. The backsheet and the surface material did not show any change in water, but the absorbent absorbed water and swelled. The cock of the hose was opened and water flowed, but did not flow because it was not dissolved at all (detailed results are shown in Table 3).
【００３１】比較例３（不織布） 熱可塑性複合繊維（ＰＥ／ＰＰの複合、３ｄ／ｆ×５ｍ
ｍのチョップ）を上記のカードウェブ−熱処理による不
織布作製法によって不織布とした（このとき、スルーエ
アー加工機の設定温度は１３７℃とした）。この不織布
を水０．０５ｄｍ3中に浸漬してから疑似トイレに投棄
し、水崩壊性能を調査した。結果、鞘芯ともに非水崩壊
性である為、水面を浮遊していた。ホースのコックを開
き水を放出しても流れ出さす残存したままとなった（詳
細結果を表３に示す）。Comparative Example 3 (nonwoven fabric) Thermoplastic composite fiber (PE / PP composite, 3d / f × 5m)
m chop) was made into a nonwoven fabric by the card web-heat treatment nonwoven fabric production method (at this time, the set temperature of the through-air processing machine was 137 ° C). This nonwoven fabric was immersed in 0.05 dm 3 of water and then dumped in a pseudo toilet, and the water disintegration performance was investigated. As a result, both the sheath cores were non-water-disintegrable, so they floated on the water surface. Even if the cock of the hose was opened and the water was released, the water remained flowing out (detailed results are shown in Table 3).
【００３２】比較例４（繊維） コ−ンスタ−チを原料として熱変性をした水分１０重量
％を含む澱粉を６０重量％、エチレン３０モル％とポリ
酢酸ビニ−ル７０モル％の共重合体のケン化度が９８％
の部分加水分解共重合体を４０重量％の組成比で混ぜた
後、造粒し、ペレットとしたものをレギュラー紡糸用の
孔径０．８ｍｍφ，孔数３５０の口金と圧縮比２．０の
フルフライトスクリュ−を使用し、溶融紡糸を行った。
この方法で３ｄ／ｆのレギュラー繊維を得た。この単糸
強度を測定したところ、０．５ｇ／ｄとなり、低強力を
示した。COMPARATIVE EXAMPLE 4 (Fiber) A copolymer of 60% by weight of starch containing 10% by weight of water, which was thermally denatured using a cone starch, and 30% by mole of ethylene and 70% by mole of polyvinyl acetate. Of saponification is 98%
Was mixed at a composition ratio of 40% by weight, granulated, and pelletized. A spinneret having a hole diameter of 0.8 mmφ and a number of holes of 350 for regular spinning was mixed with a full-powder having a compression ratio of 2.0. Melt spinning was performed using a flight screw.
In this way, 3d / f regular fibers were obtained. When the strength of the single yarn was measured, it was 0.5 g / d, indicating low tenacity.
【００３３】実施例に示したように水崩壊性複合繊維
は、澱粉系高分子のみで作られた繊維とくらべ、強力が
６．５倍程度になっており、不織布などで強力が必要な
用途に使用できる事がわかった。As shown in the examples, the water-disintegrable conjugate fiber has a strength about 6.5 times that of a fiber made of only a starch-based polymer, and is used for nonwoven fabrics and the like which requires strength. It was found that it could be used.
【００３４】[0034]
【表１】 [Table 1]
【００３５】[0035]
【表２】 [Table 2]
【００３６】[0036]
【表３】 [Table 3]
【００３７】[0037]
【発明の効果】本発明の水崩壊性複合繊維から作られた
不織布，吸収性物品を常温の水中に投下すると、短時間
に崩壊し、形態をバラバラにできる。そのため、下水
（水洗トイレ）に流す事で簡単に廃棄処理ができる用途
に幅広く利用できる。更に芯側に熱可塑性樹脂を使用し
ているので、澱粉系高分子のみで構成した水崩壊性繊維
に較べ強度が高くなり強度が必要な用途にも対応でき
る。When the nonwoven fabric and the absorbent article made from the water-disintegratable conjugate fiber of the present invention are dropped into water at room temperature, they are disintegrated in a short time, and the form can be varied. Therefore, it can be widely used in applications where the wastewater can be easily disposed of by flowing into sewage (flush toilet). Further, since a thermoplastic resin is used on the core side, the strength is higher than that of a water-disintegrable fiber composed of only a starch-based polymer, and it can be used for applications requiring strength.
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 庁内整理番号 ＦＩ 技術表示箇所 Ｄ０６Ｍ 13/244 Ａ６１Ｆ 13/18 Ｚ Ｄ０６Ｍ 13/26 ──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. 6 Identification code Agency reference number FI Technical display location D06M 13/244 A61F 13/18 Z D06M 13/26
Claims (7)
熱可塑性樹脂からなる第２成分との複合繊維であって、
前記第１成分が繊維表面の少なくとも一部を長さ方向に
連続して存在するように配された水崩壊性複合繊維。1. A first component comprising a water-disintegrable resin composition,
A composite fiber with a second component comprising a thermoplastic resin,
A water-disintegrable conjugate fiber in which the first component is arranged so as to be present at least partially on the fiber surface in the longitudinal direction.
酢酸ビニルと官能基を含まない不飽和モノマーとの共重
合体を部分加水分解した共重合体とからなる組成物であ
る請求項１に記載の水崩壊性複合繊維。2. A water-disintegrable resin composition comprising: a starch-based polymer;
The water-disintegratable conjugate fiber according to claim 1, which is a composition comprising a copolymer obtained by partially hydrolyzing a copolymer of vinyl acetate and an unsaturated monomer having no functional group.
レン、プロピレン、イソブチレンまたはスチレンのなか
から選ばれた少なくとも１種の官能基を含まない不飽和
モノマーであり、部分加水分解した共重合体のケン化度
が７８〜９８％であり、かつ、該部分加水分解した共重
合体が水崩壊性複合樹脂組成物に対して３０〜７０重量
％含まれている請求項２に記載の水崩壊性複合繊維。3. A partially hydrolyzed copolymer in which the unsaturated monomer having no functional group is at least one unsaturated monomer having no functional group selected from ethylene, propylene, isobutylene and styrene. The water disintegration according to claim 2, wherein the degree of saponification is 78 to 98%, and the partially hydrolyzed copolymer is contained in an amount of 30 to 70% by weight based on the water disintegrable composite resin composition. Composite fiber.
性複合繊維。4. The water-disintegrable conjugate fiber according to claim 1, which has a crimp.
用いた不織布。5. A nonwoven fabric using the water-disintegrable conjugate fiber according to claim 1.
含む不織繊維集合体について、少なくとも該水崩壊性複
合繊維の第１成分を水で湿潤することによって前記繊維
同士を接着させることを特徴とする不織布の製法。6. A non-woven fiber aggregate comprising the water-disintegratable conjugate fiber according to claim 1, wherein the fibers are adhered to each other by wetting at least a first component of the water-disintegratable conjugate fiber with water. A method for producing a nonwoven fabric, which is characterized in that:
たは不織布を材料として用いた吸収性物品。7. An absorbent article using the water-disintegrable composite fiber or nonwoven fabric according to claim 1 as a material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18113896A JP3741170B2 (en) | 1996-06-21 | 1996-06-21 | Water-disintegrating composite fiber and nonwoven fabric, absorbent article |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18113896A JP3741170B2 (en) | 1996-06-21 | 1996-06-21 | Water-disintegrating composite fiber and nonwoven fabric, absorbent article |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH108364A true JPH108364A (en) | 1998-01-13 |
| JP3741170B2 JP3741170B2 (en) | 2006-02-01 |
Family
ID=16095559
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18113896A Expired - Fee Related JP3741170B2 (en) | 1996-06-21 | 1996-06-21 | Water-disintegrating composite fiber and nonwoven fabric, absorbent article |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3741170B2 (en) |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01260017A (en) * | 1988-04-01 | 1989-10-17 | Toray Ind Inc | High-strength water-disintegrable type polyvinyl alcohol based conjugate fiber |
| JPH04174719A (en) * | 1990-10-29 | 1992-06-22 | Kuraray Co Ltd | Conjugate yarn |
| JPH04353537A (en) * | 1991-05-31 | 1992-12-08 | Nippon Synthetic Chem Ind Co Ltd:The | Bio-degradable resin composition |
| JPH059334A (en) * | 1991-07-01 | 1993-01-19 | Nippon Synthetic Chem Ind Co Ltd:The | Biodegradable resin compositon |
| JPH0532823A (en) * | 1991-07-29 | 1993-02-09 | Nippon Synthetic Chem Ind Co Ltd:The | Degradable resin composition |
| JPH07258467A (en) * | 1994-03-18 | 1995-10-09 | Chisso Corp | Readily degradable molding and its production |
-
1996
- 1996-06-21 JP JP18113896A patent/JP3741170B2/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01260017A (en) * | 1988-04-01 | 1989-10-17 | Toray Ind Inc | High-strength water-disintegrable type polyvinyl alcohol based conjugate fiber |
| JPH04174719A (en) * | 1990-10-29 | 1992-06-22 | Kuraray Co Ltd | Conjugate yarn |
| JPH04353537A (en) * | 1991-05-31 | 1992-12-08 | Nippon Synthetic Chem Ind Co Ltd:The | Bio-degradable resin composition |
| JPH059334A (en) * | 1991-07-01 | 1993-01-19 | Nippon Synthetic Chem Ind Co Ltd:The | Biodegradable resin compositon |
| JPH0532823A (en) * | 1991-07-29 | 1993-02-09 | Nippon Synthetic Chem Ind Co Ltd:The | Degradable resin composition |
| JPH07258467A (en) * | 1994-03-18 | 1995-10-09 | Chisso Corp | Readily degradable molding and its production |
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