Flexible multilayer film
    5.
    发明授权
    Flexible multilayer film 失效
    柔性多层膜

    公开(公告)号:US06524712B1

    公开(公告)日:2003-02-25

    申请号:US09826186

    申请日:2001-04-04

    IPC分类号: B32B2700

    摘要: A multilayer film is described which has at least one first layer (1) of thermoplastic polyurethane, at least one second layer (2) of thermoplastic elastomer, and optionally a third layer (3) of thermoplastic polyurethane. The ratio of the water vapor permeability level of the first layer (1) to the water vapor permeability level of the second layer (2), of the multilayer film is at least two. When the optional third layer (3) is present in the multilayer film, the first and third layers enclose the second layer. Also described are filled articles (e.g., water beds and hot/cold pads), which are fabricated from the multilayer films of the present invention.

    摘要翻译: 描述了具有至少一个热塑性聚氨酯的第一层(1),至少一个热塑性弹性体的第二层(2)和任选的热塑性聚氨酯的第三层(3)的多层薄膜。 多层膜的第一层(1)的水蒸气透过率与第二层(2)的水蒸汽透过度的比例为至少两倍。 当可选择的第三层(3)存在于多层膜中时,第一层和第三层包围第二层。 还描述了由本发明的多层膜制造的填充制品(例如水床和热/冷垫)。