JP2016191186A5

JP2016191186A5 -

Info

Publication number: JP2016191186A5
Application number: JP2016067271A
Authority: JP
Filing date: 2016-03-30
Publication date: 2019-04-25
Anticipated expiration: 2036-03-30

Description

本実施形態の複合繊維は、第２成分が繊維の周面の長さに対して２０％以上の長さで露出している断面構造を有することが好ましい。そのような断面構造として、第１成分が芯成分、第２成分が鞘成分であって、第１成分（芯成分）の重心位置が繊維の重心位置からずれている偏心芯鞘型断面、および第１成分と第２成分とが貼り合わされたサイドバイサイド型断面（「並列型断面」ともいう）が挙げられる。そのような断面構造によれば、収縮性に優れ、かつ捲縮発現性に優れた複合繊維を得ることができる。
熱収縮性複合繊維が、偏心芯鞘型複合繊維である場合、第１成分の偏心率は、２０〜６０％の範囲内にあることが好ましく、３０〜５０％の範囲内にあることがより好ましい。ここでいう偏心率とは、次式で定義される。

The composite fiber of the present embodiment preferably has a cross-sectional structure in which the second component is exposed at a length of 20% or more with respect to the length of the circumferential surface of the fiber. As such a cross-sectional structure, an eccentric core-in-sheil cross-section in which the first component is a core component and the second component is a sheath component, and the center of gravity of the first component (core component) deviates from the center of gravity of the fiber; The side by side type cross section (it is also called "parallel type cross section") in which the 1st ingredient and the 2nd ingredient were pasted together is mentioned. According to such a cross-sectional structure, it is possible to obtain a composite fiber which is excellent in shrinkability and excellent in crimp development.
When the heat-shrinkable conjugate fiber is an eccentric core-sheath conjugate fiber, the eccentricity of the first component is preferably in the range of 20 to 60%, and more preferably in the range of 30 to 50%. preferable. The eccentricity here is defined by the following equation.