Method of forming a consolidated fibrous structure
    3.
    发明授权
    Method of forming a consolidated fibrous structure 有权
    形成固结纤维结构的方法

    公开(公告)号:US08029633B2

    公开(公告)日:2011-10-04

    申请号:US12360542

    申请日:2009-01-27

    IPC分类号: B32B37/00

    摘要: A method of consolidating thermoplastic fibrous layers by providing a plurality of fibers having a core with an exterior surface portion comprising polypropylene and a first layer disposed on at least a portion of the core containing at least 70% alpha-olefin units which is formed into a first fibrous layer. A second fibrous layer is applied to the first fibrous layer which second layer contains a second polymer being a co-polymer having at least 50% alpha-olefin units which is characterized by a number-average molecular weight of about 7,000 to 50,000 g/mol, a viscosity of between about 2,500 and 150,000 cP measured at 170° C. and a melting temperature lower than the melting temperature of the exterior surface of the core. Heat and optionally pressure are applied to the assembly to consolidate the layers.

    摘要翻译: 通过提供具有芯的多个纤维来固定热塑性纤维层的方法,所述纤维具有包含聚丙烯的外表面部分,以及设置在所述核心的至少一部分上的第一层,所述第一层包含至少70%的α-烯烃单元,所述α-烯烃单元形成为 第一纤维层。 将第二纤维层施加到第一纤维层,第二层包含第二聚合物,其是具有至少50%的α-烯烃单元的共聚物,其特征在于数均分子量为约7000至50,000g / mol 在170℃下测量的粘度为约2,500至150,000cP,熔点低于芯的外表面的熔融温度。 加热和任选的压力施加到组件以固结层。