JP2906183B2 - Microfiber-generated fiber - Google Patents
Microfiber-generated fiberInfo
- Publication number
- JP2906183B2 JP2906183B2 JP31739090A JP31739090A JP2906183B2 JP 2906183 B2 JP2906183 B2 JP 2906183B2 JP 31739090 A JP31739090 A JP 31739090A JP 31739090 A JP31739090 A JP 31739090A JP 2906183 B2 JP2906183 B2 JP 2906183B2
- Authority
- JP
- Japan
- Prior art keywords
- fiber
- ultrafine
- sea
- fibers
- island
- 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.)
- Expired - Fee Related
Links
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- Multicomponent Fibers (AREA)
- Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
- Nonwoven Fabrics (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は極細繊維発生繊維に関し、さらに詳しくは溶
剤等を用いて構成成分の一部を除去することにより極細
繊維を発生させる海島構造を有し、かつその海島構造の
島部分が熱処理により接着が可能な二成分の重合体より
成ることを特徴とする極細繊維発生繊維及びこの極細繊
維発生繊維を用いて得られる極細複合繊維を有する織布
または不織布に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a microfiber-generating fiber, and more particularly, to a fiber having a sea-island structure that generates a microfiber by removing a part of a component using a solvent or the like. And a woven fabric having an ultrafine composite fiber obtained by using the ultrafine composite fiber, wherein the island portion of the sea-island structure is made of a two-component polymer that can be bonded by heat treatment. Or non-woven fabric.
最近、衣料品の高級化、多様化に伴い繊維の極細化に
よる風合いの改良が試みられている。また合成紙、不織
布などの用途開発が進むにつれて、これらの用途に適し
た極細繊維の製造方法の開発が望まれている。極細繊維
を発生する繊維としては、一般に海島型繊維と称されて
いる極細繊維発生繊維が、きわめて有用であり、これを
用いた新しい製品が多く世に出ている。In recent years, with the upsizing and diversification of clothing, attempts have been made to improve the texture by making fibers extremely fine. Further, as the development of applications for synthetic paper, nonwoven fabric, and the like progresses, development of a method for producing ultrafine fibers suitable for these applications is desired. As the fibers that generate ultra-fine fibers, ultra-fine fiber-generating fibers, which are generally called sea-island fibers, are extremely useful, and many new products using these fibers have appeared in the world.
これらの海島型繊維のうち、特に特公昭47−37648号
公報等に開示されたものは、海部分と島部分の異種のポ
リマーをブレンドして溶融紡糸した後、海部分を溶剤に
より除去し、島部分のみを残すようにしたものである。
また特開昭60−21904号公報等に開示されたものは、海
島構造となるように異種のポリマーを複合紡糸したもの
である。しかし、これらはいずれも海成分を除去して得
られる極細繊維束の強力が不充分であるなどの欠点を有
している。Among these sea-island type fibers, particularly those disclosed in Japanese Patent Publication No. 47-37648, etc., after blending different polymers of the sea portion and the island portion and melt-spinning, the sea portion is removed by a solvent, Only the island is left.
Further, those disclosed in Japanese Patent Application Laid-Open No. Sho 60-21904 and the like are obtained by complex spinning different polymers so as to form a sea-island structure. However, all of them have disadvantages such as insufficient strength of the ultrafine fiber bundle obtained by removing the sea component.
一方、これら海島型繊維の改良型として本出願人によ
る特願平01−18269号（特開平２−200868として公開）
に示される極細繊維発生複合繊維は、海島構造を有する
極細繊維発生部分と他の部分からなる複合繊維であつ
て、極細繊維発生部分は繊維表面に露出しており、極細
繊維発生部分の島成分を単糸織度0.1デニール以下の極
細繊維とし、他の部分は繊度0.5デニール以上の繊維行
とすることにより、充分な強力と安定した紡糸性を得て
いる。On the other hand, as an improved type of these sea-island type fibers, Japanese Patent Application No. 01-18269 filed by the present applicant (disclosed as Japanese Patent Application Laid-Open No. 2-200868).
The microfiber-generating conjugate fiber shown in (1) is a conjugate fiber comprising a microfiber-generating portion having a sea-island structure and another portion, and the microfiber-generating portion is exposed on the fiber surface, and the island component of the microfiber-generating portion is Is made of ultrafine fibers having a single yarn weave of 0.1 denier or less, and the other portions are made of fibers having a fineness of 0.5 denier or more, whereby sufficient strength and stable spinnability are obtained.
しかし、この極細繊維発生複合繊維では極細繊維発生
部分の海成分除去後も他の部分に用いた単糸織度0.5デ
ニール以上の繊維が残り、極細繊維のみが要求されてい
る分野には不適当であった。However, in this ultrafine fiber-generating conjugate fiber, even after removal of the sea component in the ultrafine fiber-generating portion, fibers having a single yarn weave of 0.5 denier or more used in other portions remain, which is unsuitable for the field where only ultrafine fibers are required. there were.
本発明の目的は、極細繊維発生繊維を用いて製造す
る、実用上充分な強力を有した、極細繊維のみよりなる
織布あるいは不織布を提供することにある。An object of the present invention is to provide a woven or nonwoven fabric made of only ultrafine fibers, which has sufficient strength for practical use and is manufactured using ultrafine fiber-generating fibers.
本発明者は、海島型極細繊維発生繊維の上記の課題を
解決するために鋭意研究の結果、海島構造の島部分を融
点が20℃以上異なる２種の重合体で構成した熱接着性複
合繊維とし、海部分を除去して島部分からなる極細繊維
を発生させた後、熱処理によって極細繊維同士を接着す
ることで所期の成果が得られることを知り本発明を完成
するに到った。The present inventor has conducted intensive studies to solve the above-mentioned problems of the sea-island type ultrafine fiber-generating fiber. After removing the sea portion to generate ultrafine fibers composed of island portions, it was found that the desired results could be obtained by bonding the ultrafine fibers together by heat treatment, thereby completing the present invention.
本発明の極細繊維発生繊維とは、溶剤等で除去可能な
海部分中に溶剤等で除去できない島部分が分散して存在
する海島型の複合繊維であつて、島部分は融点の差が20
℃以上ある２種の重合体からなり、これらの重合体はそ
の最も低い融点を有する重合体が島部分の表面の少なく
とも一部を占めるように並列型に配置された単糸織度0.
1デニール以下の極細複合繊維を形成していることを特
徴とする極細繊維発生繊維である。The ultrafine fiber-generating fiber of the present invention is a sea-island type composite fiber in which island portions that cannot be removed with a solvent or the like are dispersed in a sea portion that can be removed with a solvent or the like.
It is composed of two types of polymers having a single yarn weave of 0.degree. C. or higher, which are arranged side by side so that the polymer having the lowest melting point occupies at least a part of the surface of the island portion.
An ultrafine fiber-generating fiber characterized by forming an ultrafine composite fiber of 1 denier or less.
本発明の極細複合繊維束とは、前記の極細繊維発生繊
維の海部分を除去して得られる極細複合繊維束である。The ultrafine composite fiber bundle of the present invention is an ultrafine composite fiber bundle obtained by removing the sea portion of the above-mentioned ultrafine fiber generating fiber.
本発明の極細繊維不織布とは、前記の極細繊維発生繊
維からなる繊維集積体から、極細繊維発生繊維の海部分
を除去して得られる極細複合繊維集積体を、極細複合繊
維の最低融点を有する重合体の融点以上で他の重合体の
融点未満の温度で熱処理して得られる極細繊維不織布で
ある。The ultrafine fiber nonwoven fabric of the present invention refers to a fiber composite made of the above microfine fiber-generating fibers, and an ultrafine composite fiber aggregate obtained by removing the sea portion of the microfine fiber-generating fibers, having a minimum melting point of the microfine composite fibers. An ultrafine fiber nonwoven fabric obtained by heat treatment at a temperature equal to or higher than the melting point of a polymer and lower than the melting point of another polymer.
本発明における極細繊維発生繊維の形態の例として
は、サイドバイドサイド型の断面を有する島部分を海部
分が覆った物（第１図）が挙げられる。As an example of the form of the ultrafine fiber-generating fiber in the present invention, an object in which an island portion having a side-by-side type cross section is covered with a sea portion (FIG. 1) is exemplified.
本発明における極細繊維発生繊維を第１図、第２図及
び第３図の様な断面を有する繊維に紡糸する方法の例と
しては、本出願人による特願平01−112999号（特開平２
−293403として公開）に示される口金を用い海成分が固
化する前に数本〜数百本の繊維をまとめて引き取る方法
が挙げられる。An example of a method of spinning the ultrafine fiber-generating fiber into a fiber having a cross section as shown in FIGS. 1, 2 and 3 in the present invention is disclosed in Japanese Patent Application No. 01-112999 (Japanese Unexamined Patent Application Publication No.
(Published as -293403) and collects several to several hundred fibers before the sea component is solidified.
本発明の極細繊維発生繊維の海部分には、溶剤等によ
つて除去可能な重合体、例えば、水溶性熱可塑性ポリビ
ニルアルコール等が使用できる。In the sea portion of the ultrafine fiber generating fiber of the present invention, a polymer removable with a solvent or the like, for example, a water-soluble thermoplastic polyvinyl alcohol or the like can be used.
本発明の極細繊維発生繊維の島部分を構成する複合部
分に用いる重合体としては一般に繊維原料として用いら
れるポリオレフイン、ポリアミド、ポリエステル等の中
から、海部分と海島構造を形成することが可能な程度に
相溶性が悪く、かつ融点が20℃以上異なる重合体の組合
せで、なおかつ低融点の重合体が島部分の表面の少なく
とも一部を形成するように使用する。融点の差が20℃未
満では不織布作成時の熱処理が極細繊維中の高融点成分
の重合体に悪影響を与える場合があるので好ましくな
い。また低融点の重合体が島部分の表面の少なくとも一
部を形成していないと、海成分除去後の、熱処理による
極細繊維同士の接着が不充分となり、不織布の強力が不
充分となるので好ましくない。As the polymer used for the composite portion constituting the island portion of the ultrafine fiber-generating fiber of the present invention, polyolefin, polyamide, polyester, or the like generally used as a fiber raw material, a sea portion and a sea-island structure can be formed. A combination of polymers having poor compatibility with each other and a melting point different from each other by 20 ° C. or more is used so that a polymer having a low melting point forms at least a part of the surface of the island portion. If the difference in the melting points is less than 20 ° C., the heat treatment at the time of preparing the nonwoven fabric is not preferable because the polymer of the high melting point component in the ultrafine fibers may be adversely affected. Further, if the polymer having a low melting point does not form at least a part of the surface of the island portion, the adhesion between the ultrafine fibers due to the heat treatment after the removal of the sea component becomes insufficient, and the strength of the nonwoven fabric becomes insufficient. Absent.
以下、本発明を実施例により詳細に説明する。 Hereinafter, the present invention will be described in detail with reference to examples.
実施例１ 液部分の成分として熱可塑性ポリビニルアルコール
（メルトフローレート190℃:50g/10min、重合度400、ケ
ン化度62％）を230℃、20g/minで、また島部分を構成、
する第１の成分（第１図の２の部分）としてポリエチレ
ン（メルトフローレート190℃:15g/10min）を200℃、10
g/minで、第２の成分（第１図の３の部分）としてポリ
プロピレン（メルトフローレート230℃:30g/10min）を2
30℃、10g/minで、それぞれ、特願平01−112999号（特
開平２−2293403として公開）に示されるような分配板
を持ち、直径0.4mmの円形紡糸孔を有する紡糸口金（紡
糸孔数1000個）に供給し、口金直下で、紡出した繊維の
海部分が固化する前に繊維10本ずつをそれぞれ１本にま
とめ、1000m/minで引き取り、第１図に示すような断面
を有する極細繊維発生繊維の未延伸糸（3.6d/f）を得
た。Example 1 Thermoplastic polyvinyl alcohol (melt flow rate 190 ° C .: 50 g / 10 min, polymerization degree 400, saponification degree 62%) as a component of the liquid portion at 230 ° C. and 20 g / min.
As a first component (part 2 in FIG. 1), polyethylene (melt flow rate: 190 ° C .: 15 g / 10 min) is used at 200 ° C.
2 g of polypropylene (melt flow rate: 230 ° C .: 30 g / 10 min) as the second component (3 in FIG. 1)
A spinneret (a spinning hole) having a distribution plate as disclosed in Japanese Patent Application No. 01-112999 (disclosed as Japanese Patent Application Laid-Open No. 2-2293403) and having a circular spinning hole of 0.4 mm in diameter at 30 ° C. and 10 g / min. 1000 pieces), just under the mouthpiece, before the sea portion of the spun fiber solidifies, collect 10 fibers at a time and collect them at 1000m / min, and take the cross section as shown in Fig. 1. An undrawn yarn (3.6 d / f) of the ultrafine fiber generating fiber was obtained.
この未延伸糸を90℃に加熱しながら２倍延伸して極細
繊維発生繊維の延伸糸（1.8d/f）を得た。この延伸糸に
機械捲縮を掛け、長さ51mmにカットしステープルとし
た。このステープルをローラーカード機によつてカーデ
ィングして目付け50g/m2のウエブとし、水（30℃）にて
洗浄し海部分を除去した。このウエブをサクションドラ
イヤー（140℃、風速1.5m/sec）で熱処理し不織布とし
た。顕微鏡にて観察した結果、この不織布はポリエチレ
ン／ポリプロピレンの並列型複合極細繊維（0.09d/f）
で形成されており、各繊維の接点はポリエチレンの融着
により接着されていた。この不織布の強力についての結
果を第１表に示した。The undrawn yarn was drawn twice while being heated to 90 ° C. to obtain a drawn yarn (1.8 d / f) of an ultrafine fiber generating fiber. This drawn yarn was mechanically crimped and cut into a length of 51 mm to obtain staples. The staple was carded by a roller card machine to form a web having a basis weight of 50 g / m 2 , and washed with water (30 ° C.) to remove a sea portion. This web was heat-treated with a suction dryer (140 ° C., wind speed 1.5 m / sec) to obtain a nonwoven fabric. As a result of observation with a microscope, this nonwoven fabric is a polyethylene / polypropylene side-by-side composite ultrafine fiber (0.09d / f)
And the contact points of the fibers were bonded by fusion of polyethylene. Table 1 shows the results of the strength of the nonwoven fabric.
実施例２ 実施例１で島部分を構成する第１の成分（第１図の２
の部分）としてポリエチレン（メルトフローレート190
℃:15g/10min）を200℃、10g/minで、第２の成分（第１
図の３の部分）としてナイロン６（メルトフローレート
275℃;85g/10min）を250℃、10g/minで、それぞれ、供
給する以外は実施例１と同様の操作を行い不織布を得
た。Example 2 The first component constituting the island portion in Example 1 (2 in FIG. 1)
Part) as polyethylene (melt flow rate 190
° C: 15g / 10min) at 200 ° C, 10g / min.
Nylon 6 (melt flow rate)
275 ° C .; 85 g / 10 min) at 250 ° C. and 10 g / min, respectively, except for supplying the same, to obtain a nonwoven fabric.
得られた不織布を顕微鏡にて観察した結果、不織布は
ポリエチレン／ナイロン６の並列型複合極細繊維（0.09
d/f）で形成されており、各繊維の接点はポリエチレン
の融着により接着されていた。この不織布の強力につい
ての結果を第１表に示した。As a result of observing the obtained nonwoven fabric with a microscope, the nonwoven fabric was found to be a polyethylene / nylon 6 parallel composite ultrafine fiber (0.09
d / f), and the contacts of each fiber were bonded by fusion of polyethylene. Table 1 shows the results of the strength of the nonwoven fabric.
実施例３ 実施例１で得られた延伸糸を長さ5mmにカットしチョ
ップ繊維とした。このチョップ繊維を湿式抄紙して海部
分の除去と不織布加工を同時に行った。得られた不織布
（目付50タ/m2）をサクションドライヤー（140℃、風速
1.5m/sec）で熱処理した。熱処理後の不織布を顕微鏡に
て観察した結果、ポリエチレン／ポリプロピレンの並列
型複合極細繊維（0.09d/f）で形成されており、各繊維
はその接点がポリエチレンの融着により接着されてい
た。この不織布の強力についての結果を第１表に示し
た。Example 3 The drawn yarn obtained in Example 1 was cut into a length of 5 mm to obtain a chop fiber. The chopped fiber was wet-formed to remove the sea portion and to process the nonwoven fabric at the same time. The obtained non-woven fabric (with a basis weight of 50 ton / m 2 ) is passed through a suction drier (140 ° C, wind speed
1.5 m / sec). As a result of observing the non-woven fabric after the heat treatment with a microscope, it was found that the non-woven fabric was formed of polyethylene / polypropylene side-by-side composite ultrafine fibers (0.09 d / f), and each fiber had its contact point bonded by fusion of polyethylene. Table 1 shows the results of the strength of the nonwoven fabric.
比較例１ 海部分の成分として熱可塑性ポリビニルアルコール
（メルトフローレート190℃:50g/10min、重合度400、ケ
ン化度62％）を230℃、20g/minで、また島部分を構成す
る成分としてポリプロピレン（メルトフローレート230
℃:30g/10min）を230℃、20g/minで、直径0.4mmの円形
紡糸孔を有する紡糸口金（紡糸孔数1000個）に供給し、
口金直下で海部分が固化する前に、紡出した繊維10本づ
つを、それ、ぞれ一本にまとめ、1000m/minで引き取
り、極細繊維発生繊維の未延伸糸（３。6d/f）を得た。Comparative Example 1 Thermoplastic polyvinyl alcohol (melt flow rate 190 ° C: 50 g / 10min, polymerization degree 400, saponification degree 62%) at 230 ° C and 20g / min as a component of the sea portion, and as a component constituting the island portion Polypropylene (Melt flow rate 230
℃: 30g / 10min) at 230 ° C, 20g / min to a spinneret (1,000 spinning holes) with a circular spinning hole of 0.4mm in diameter,
Before the sea portion solidifies just below the mouthpiece, each of the spun fibers is combined into a single piece, taken at 1000 m / min, and undrawn yarn of ultrafine fiber generating fiber (3.6 d / f). I got
この未延伸糸を90℃に加熱しながら２。倍延伸して極
細繊維発生複合繊維の延伸糸（1.8d/f）を得た。この延
伸糸に機械捲縮を掛け、長さ51mmにカットしてステープ
ルとした。このステープルをローラーカード機によって
カーディングして目付け50g/m2のウエブとし、水（30
℃）にて洗浄して海部分を除去した後、アクリル系樹脂
のエマルジョンを含浸させ、乾燥することによつて不織
布とした。この不織布を顕微鏡にて観察した結果、ポリ
プロピレンの極細繊維（0.09d/f）で形成されていた。
この不織布の強力を第１表に不した。2. heating the undrawn yarn to 90 ° C. It was double-drawn to obtain a drawn yarn (1.8 d / f) of the ultrafine fiber-generating conjugate fiber. The drawn yarn was mechanically crimped and cut into a length of 51 mm to obtain staples. This staple is carded by a roller card machine to form a web having a basis weight of 50 g / m 2 , and water (30
C) to remove the sea portion, impregnated with an acrylic resin emulsion, and dried to obtain a nonwoven fabric. As a result of observing the nonwoven fabric with a microscope, it was found that the nonwoven fabric was formed of ultrafine polypropylene fibers (0.09 d / f).
Table 1 shows the strength of this nonwoven fabric.
比較例２ 海部分の成分として熱可塑性ポリビニルアルコール
（メルトフローレート190℃:50g/10min、重合度400、ケ
ン化度62％）を用い、また島部分の成分としてポリプロ
ピレン（メルトフローレート230℃:30g/10min）を用
い、両者のブレンド物を230℃、100g/minで、それぞ
れ、直径0.4mmの円形紡糸孔を有する紡糸口金（紡糸孔2
00個）に供給し、スバンボンド法（引き取り速度は3000
m/min）で紡糸し、目付け30g/m2のフリース（単糸デニ
ール3d/f）を得た。Comparative Example 2 Thermoplastic polyvinyl alcohol (melt flow rate 190 ° C: 50 g / 10 min, polymerization degree 400, saponification degree 62%) was used as a component of the sea portion, and polypropylene (melt flow rate 230 ° C: 30 g / 10 min) at 230 ° C. and 100 g / min, using a spinneret having a circular spin hole of 0.4 mm in diameter (spin hole 2).
00 pieces) and the Svan Bond method (with a pick-up speed of 3000
m / min) to obtain a fleece (single yarn denier 3 d / f) with a basis weight of 30 g / m 2.
得られたフリースをウオーターニードル加工（水圧70
kg/cm2）することで、海部分の除去、フリースの不織布
化を同時に行った。この不織布を顕微鏡にて観察した結
果、ポリプロピレンの極細繊維（0.000,000,6〜0.1d/
f）で形成されていた。この不織布の強力についての結
果を第１表に示した。The obtained fleece is processed with a water needle (water pressure 70
kg / cm 2 ), the removal of the sea portion and the fleece nonwoven fabric were simultaneously performed. As a result of observing this nonwoven fabric with a microscope, it was found that the ultrafine fibers of polypropylene (0.000,000, 6 to 0.1 d /
f) was formed. Table 1 shows the results of the strength of the nonwoven fabric.
比較例３ 比較例１で得られた延伸糸を長さ5mmにカツトしチョ
ップ繊維とした。このチョップ繊維に増強用ポリビニル
アルコール（5wt％）を加え湿式抄造して海部分の除去
と不織布加工を同時に行った。この不織布（目付50g/
m2）の強力についての結果を第１表に示した。Comparative Example 3 The drawn yarn obtained in Comparative Example 1 was cut into a length of 5 mm to obtain a chop fiber. Polyvinyl alcohol (5 wt%) for reinforcement was added to the chop fiber, and wet papermaking was performed to simultaneously remove the sea portion and process the nonwoven fabric. This nonwoven fabric (50g /
Table 1 shows the results regarding the strength of m 2 ).
比較例４ 実施例１で島部分の第１の成分（低融点成分）として用
いたポリエチレンの代わりにエチレン−プロピレン共重
合体（エチレン含量 0.3wt％、メルトフローレート230
℃:15g/10min、融点 150℃）を用い、ドライヤー熱処
理を（160℃、1.5m/sec）で行う以外は実施例１と同様
に操作を行い不織布を得た。この不織布の強力について
の結果を第１表に示した。Comparative Example 4 In place of polyethylene used as the first component (low melting point component) of the island portion in Example 1, an ethylene-propylene copolymer (ethylene content 0.3 wt%, melt flow rate 230
C .: 15 g / 10 min, melting point 150.degree. C.), and the same procedure as in Example 1 was carried out, except that drying heat treatment was performed at 160.degree. Table 1 shows the results of the strength of the nonwoven fabric.
〔発明の効果〕 本発明の極細繊維発生繊維は、海島構造中の海部分を
除去することで0.1デニール以下の極細繊維を発生し、
発生した極細繊維はすべて熱接着性複合繊維であるた
め、これを用いて得た熱接着性不織布は、通常の極細繊
維の不織布に比べて高い強力を有する。また、熱接着で
あるため、接着剤による接着に比べ有機溶剤などの不純
物が不織布中に残留することがなく安全性も高いという
優れた効果を示す。 (Effect of the Invention) The ultrafine fiber generating fiber of the present invention generates an ultrafine fiber of 0.1 denier or less by removing the sea portion in the sea-island structure,
Since all the generated ultrafine fibers are heat-adhesive conjugate fibers, the heat-adhesive nonwoven fabric obtained by using them has higher strength than a normal non-woven fabric of ultrafine fibers. In addition, since it is heat bonding, there is an excellent effect that impurities such as an organic solvent do not remain in the nonwoven fabric and safety is high as compared with bonding by an adhesive.
第１図はサイドバイサイド型の島部分を海部分が覆った
極細繊維発生繊維の断面の模式図。 1:海部分 2:島部分（低融点成分） 3:島部分（高融点成分）FIG. 1 is a schematic diagram of a cross section of a microfiber-generating fiber in which a sea portion covers a side-by-side island portion. 1: Sea part 2: Island part (low melting point component) 3: Island part (high melting point component)
Claims (3)
きない島部分が分散して存在する海島型の複合繊維であ
って、島部分は融点の差が20℃以上ある２種の重合体か
らなり、これらの重合体はその最も低い融点を有する重
合体が島部分の表面の少なくとも一部を占めるように並
列型に配置された単糸織度0.1デニール以下の極細複合
繊維を形成していることを特徴とする極細繊維発生繊
維。1. A sea-island composite fiber in which island portions that cannot be removed by a solvent are dispersed in a sea portion that can be removed by a solvent, wherein the island portions have two types of heavy fibers having a difference in melting point of 20 ° C. or more. These polymers form ultrafine composite fibers having a single yarn weave degree of 0.1 denier or less arranged in parallel so that the polymer having the lowest melting point occupies at least a part of the surface of the island portion. An ultrafine fiber generating fiber.
を除去して得られる極細複合繊維束。2. An ultrafine composite fiber bundle obtained by removing the sea portion of the ultrafine fiber generating fiber according to claim 1.
繊維集積体から、極細繊維発生繊維の海部分を除去して
得られる極細複合繊維集積体を、極細複合繊維の最低融
点を有する重合体の融点以上で他の重合体の融点未満の
温度で熱処理して得られる極細繊維不織布。3. An ultrafine composite fiber assembly obtained by removing the sea portion of the ultrafine fiber-generating fiber from the fiber aggregate comprising the ultrafine fiber-generating fiber of claim (1) has a minimum melting point of the ultrafine composite fiber. A microfiber nonwoven fabric obtained by heat treatment at a temperature equal to or higher than the melting point of a polymer and lower than the melting point of another polymer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31739090A JP2906183B2 (en) | 1990-11-21 | 1990-11-21 | Microfiber-generated fiber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31739090A JP2906183B2 (en) | 1990-11-21 | 1990-11-21 | Microfiber-generated fiber |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04194013A JPH04194013A (en) | 1992-07-14 |
| JP2906183B2 true JP2906183B2 (en) | 1999-06-14 |
Family
ID=18087719
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP31739090A Expired - Fee Related JP2906183B2 (en) | 1990-11-21 | 1990-11-21 | Microfiber-generated fiber |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2906183B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101279192B1 (en) | 2005-02-28 | 2013-06-26 | 쓰리엠 이노베이티브 프로퍼티즈 컴파니 | Composite Polymer Fibers |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102319779B1 (en) * | 2014-02-25 | 2021-11-01 | 도레이 카부시키가이샤 | Sea-island composite fiber, composite ultra-fine fiber, and fiber product |
| JP6759661B2 (en) * | 2016-03-30 | 2020-09-23 | 東レ株式会社 | Kaijima composite fiber |
| CN109183190B (en) * | 2018-08-24 | 2021-04-02 | 东华大学 | Functional textile material and preparation method and application thereof |
| JP2021004431A (en) * | 2019-06-27 | 2021-01-14 | 東レ株式会社 | Sea-island fiber |
| CN112575398B (en) * | 2020-12-21 | 2021-11-12 | 江苏华峰超纤材料有限公司 | PP/LDPE sea-island fiber for thermal forming non-woven fabric and preparation method thereof |
| CN112663155B (en) * | 2020-12-21 | 2022-04-15 | 江苏华峰超纤材料有限公司 | Sea-island fiber for thermal forming non-woven fabric and preparation method thereof |
-
1990
- 1990-11-21 JP JP31739090A patent/JP2906183B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101279192B1 (en) | 2005-02-28 | 2013-06-26 | 쓰리엠 이노베이티브 프로퍼티즈 컴파니 | Composite Polymer Fibers |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH04194013A (en) | 1992-07-14 |
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