Nonwoven fabric made of fine denier filaments and a production method
thereof
    3.
    发明授权
    Nonwoven fabric made of fine denier filaments and a production method thereof 失效
    细旦丝无纺布及其制造方法

    公开(公告)号:US5718972A

    公开(公告)日:1998-02-17

    申请号:US598038

    申请日:1996-02-07

    IPC分类号: D04H1/54 D02G3/00

    摘要: The present invention provides a nonwoven fabric made of fine denier filaments of superior bulkiness, heat insulation property and tensile strength, and a production method thereof. This nonwoven fabric is made of fine denier filaments produced by first preparing. First a thermoplastic polymer component "A", then another thermoplastic polymer component "B" which is insoluble in the component "A" and of which the melting point is higher than that of the component "A" by 30.degree. to 180.degree. C. Adopting a bicomponent melt spinning method employing the component "A" and the component "B", the bicomponent conjugate filaments, on which surface at least component "A" is exposed, are obtained. By accumulating these bicomponent conjugate filaments, a web is formed. Then heat is applied to the predetermined areas on the web throughout its entire thickness, whereby only the component A is softened or molten, and the bicomponent conjugate filaments are heat bonded to one another, thus a fleece is obtained. The predetermined areas are shaped like dots or lattices and distributed with a certain space between them. After obtaining the fleece, a wrinkling action is applied to the fleece.

    摘要翻译: 本发明提供一种由蓬松度,隔热性和拉伸强度优良的细旦尼尔丝制成的无纺布及其制造方法。 该无纺布由首先制备的细旦尼尔细丝制成。 首先是热塑性聚合物组分“A”,然后另外一种不溶于组分“A”的热塑性聚合物组分“B”,其熔点高于组分“A”的熔点高达30℃至180℃。 采用使用组分“A”和组分“B”的双组分熔体纺丝方法,获得其上暴露至少组分“A”的表面的双组分共轭长丝。 通过积聚这些双组分共轭长丝,形成网。 然后在整个厚度上对网上的预定区域施加热量,由此只有组分A软化或熔融,并且双组分共轭长丝彼此热粘合,从而获得羊毛。 预定区域形状像点或格子,并且在它们之间具有一定的空间。 获得羊毛后,羊毛应用起皱作用。

    Process for producing polyester fibers
    4.
    发明授权
    Process for producing polyester fibers 失效
    生产聚酯纤维的方法

    公开(公告)号:US5013506A

    公开(公告)日:1991-05-07

    申请号:US384527

    申请日:1989-07-25

    IPC分类号: D01D5/098 D01F6/62

    CPC分类号: D01D5/098 D01F6/62

    摘要: Melt-spun polyester fibers are taken up in the absence of heat at a speed of 5,000 to 6,000 m/min under conditions that satisfy the following relations (IX) and (X), subsequently heat-treating the fibers for a period of from 0.01 to 0.05 seconds with a heating roller while the length of the melt-spun fibers is held constant with no drawing step being provided between the taking up and heat treatment steps, and finally winding up the heated fibers0.04.ltoreq.L/(SSxd).ltoreq.0.08 (IX)1.0.ltoreq.To.ltoreq.1.5 (X)where L is the distance (cm) between the spinneret and the convergence point, SS is the speed (m/min) of a take up roller, To is the spinning tension (g/d) at a point immediately after the convergence point and D is the filament fineness (d) of the fiber wound up and is within the range of from 1 to 3 d.

    摘要翻译: 熔融聚酯纤维在满足以下关系(Ⅸ)和(Ⅹ)的条件下以5,000至6,000m / min的速度在不存在热的情况下被吸收,随后将纤维热处理0.01 至0.05秒,而熔融纺丝纤维的长度保持恒定,在卷取和热处理步骤之间没有提供拉伸步骤,最后卷起加热的纤维0.04(SSxd)