Composite nonwoven fabric and articles produced therefrom
    2.
    发明授权
    Composite nonwoven fabric and articles produced therefrom 失效
    复合无纺布及其制造的制品

    公开(公告)号:US5484645A

    公开(公告)日:1996-01-16

    申请号:US163433

    申请日:1993-12-08

    摘要: The invention is directed to a composite nonwoven fabric comprising first and second nonwoven webs of spunbonded substantially continuous thermoplastic filaments, and a nonwoven hydrophobic microporous web of thermoplastic meltblown microfibers sandwiched between the first and second nonwoven webs. The filaments of the nonwoven spunbond webs are formed of continuous multiconstituent filaments which include a lower melting gamma radiation stable polyethylene polymer component and one or more higher melting gamma radiation stable polymer constituents, wherein a substantial portion of the surfaces of the multiconstituent filaments consists of the lower melting gamma radiation stable polyethylene constituent. The nonwoven hydrophobic microporous web is formed from a gamma radiation stable polyethylene polymer. The webs are bonded together to form the composite nonwoven fabric by discrete point bonds in which the polyethylene constituent of said multiconstituent filaments and the polyethylene of said third nonwoven web are fused together.

    摘要翻译: 本发明涉及一种复合非织造织物,其包括纺粘的基本上连续的热塑性长丝的第一和第二非织造纤维网,以及夹在第一和第二非织造纤维网之间的热塑性熔喷微纤维的非织造疏水性微孔纤维网。 非织造纺粘纤维网的长丝由连续的多成分长丝形成,其包括较低熔点的γ辐射稳定的聚乙烯聚合物组分和一种或多种较高熔点的γ辐射稳定的聚合物组分,其中多成分长丝的大部分表面由 较低熔点的γ辐射稳定的聚乙烯组分。 非织造疏水性微孔网由γ辐射稳定的聚乙烯聚合物形成。 通过离散的点键将纤维网结合在一起以形成复合非织造织物,其中所述多取向长丝的聚乙烯组分和所述第三非织造纤维网的聚乙烯熔合在一起。