Breathable composite sheet structure and absorbent articles utilizing same
    1.
    发明授权
    Breathable composite sheet structure and absorbent articles utilizing same 失效
    透气复合片材结构和利用其的吸收制品

    公开(公告)号:US06677258B2

    公开(公告)日:2004-01-13

    申请号:US09194378

    申请日:1998-11-25

    IPC分类号: B32B2712

    摘要: A breathable composite sheet material, a method for making such a sheet material, and an absorbent article utilizing the sheet material are provided. The composite sheet material is comprised of a thermoplastic film adhered directly to a fibrous substrate. The thermoplastic film comprises at least 50% by weight of a polymer material from the group of block copolyether esters, block copolyether amides and polyurethanes. The substrate comprises a fibrous web of at least 50% by weight of polyolefin polymersynthetic fibers. The composite sheet exhibits a peel strength of at least 0.1 N/cm, a dynamic fluid transmission of less than about 0.75 g/m2 when subjected to an impact energy of about 2400 joules/m2, and a moisture vapor transmission rate, according to the dessiccant method, of at least 1500 g/m2/2 hr. The absorbent article comprises: (a) a topsheet; (b) a backsheet; and (c) an absorbent core located between the topsheet and the backsheet; wherein the backsheet comprises the non-porous, substantially fluid impermeable moisture vapor permeable composite sheet material described above. The composite sheet material is oriented such that the film layer of the composite sheet material faces toward the absorbent core. The absorbent article may comprise a disposable diaper.

    摘要翻译: 提供透气性复合片材材料,制造这种片状材料的方法和利用片材的吸收制品。 复合片材由直接附着在纤维基材上的热塑性薄膜构成。 热塑性膜包含至少50重量%的来自嵌段共聚醚酯,嵌段共聚醚酰胺和聚氨酯的聚合物材料。 基材包含至少50重量%的聚烯烃聚合物纤维的纤维网。 当经受约2400焦耳/平方米的冲击能量时,复合片材具有至少0.1N / cm的剥离强度,小于约0.75g / m 2的动态流体透过率,以及湿气 传输速率,根据干燥方法,至少1500g / m 2/2小时。 吸收性物品包括:(a)顶片; (b)底片; 和(c)位于顶片和底片之间的吸收芯; 其中所述底片包括上述无孔,基本上流体不透水蒸气透过的复合片材。 复合片材的取向使得复合片材的薄膜层朝向吸收芯。 吸收制品可以包括一次性尿布。