BICOMPONENT FIBER FOR AN AREA BONDED NONWOVEN FABRIC FROM SINGLE POLYMER SYSTEM
    1.
    发明公开
    BICOMPONENT FIBER FOR AN AREA BONDED NONWOVEN FABRIC FROM SINGLE POLYMER SYSTEM 审中-公开
    双组分纤维用于单面聚合物系统的区域结合非织造织物

    公开(公告)号:EP3284854A1

    公开(公告)日:2018-02-21

    申请号:EP17193264.3

    申请日:2008-08-14

    申请人: Fiberweb, LLC

    摘要: A nonwoven fabric is provided having a plurality of semi-crystalline filaments that are thermally bonded to each other and are formed of the same polymer and exhibit substantially the same melting temperature. The fabric is produced by melt spinning an amorphous crystallizable polymer to form two components having different levels of crystallinity. During spinning, a first component of the polymer is exposed to conditions that result in stress-induced crystallization such that the first polymer component is in a semi-crystalline state and serves as the matrix or strength component of the fabric. The second polymer component is not subjected to stress induced crystallization and thus remains in a substantially amorphous state which bonds well at relatively low temperatures. In a bonding step, the fabric is heated to soften and fuse the binder component. Under these conditions, the binder component undergoes thermal crystallization so that in the final product, both polymer components are semi-crys talline.

    摘要翻译: 提供一种非织造织物,其具有多个相互热粘合的半结晶长丝,并且由相同的聚合物形成并表现出基本相同的熔融温度。 该织物通过熔融纺丝非晶态可结晶聚合物而形成,以形成具有不同结晶度水平的两种组分。 在纺丝期间,将聚合物的第一组分暴露于导致应力诱导结晶的条件下,使得第一聚合物组分处于半结晶状态并且用作织物的基质或强度组分。 第二聚合物组分不经受应力诱导结晶,因此保持基本上无定形状态,在相对较低的温度下结合良好。 在粘合步骤中,织物被加热以软化并粘合粘合剂组分。 在这些条件下,粘合剂组分经历热结晶,使得在最终产品中,两种聚合物组分均为半结晶。