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    • 6. 发明专利
    • Crystalline polymer microporous membrane, method for manufacturing the same, and filter for filtering
    • 晶体聚合物微孔膜,其制造方法和过滤器
    • JP2012011369A
    • 2012-01-19
    • JP2010181655
    • 2010-08-16
    • Fujifilm Corp富士フイルム株式会社
    • ISHIZUKA KENICHINISHIDA NOBUHIRO
    • B01D69/12B01D71/36
    • B01D71/36B01D63/14B01D67/002B01D69/12B01D2325/02B01D2325/32B29C47/0009B29C47/004
    • PROBLEM TO BE SOLVED: To provide a crystalline polymer microporous membrane with pores of a minute size which can efficiently catch fine particles of a size of tens nm and a method for manufacturing the same, and to provide a filter for filtering.SOLUTION: In the crystalline polymer microporous membrane laminated in two or more layers consisting of a layer containing a first crystalline polymer and a layer containing a second crystalline polymer with a plurality of hole parts penetrated in a thickness direction, the melting point of the first crystalline polymer is higher than that of the second crystalline polymer, at least the layer containing the second crystalline polymer in the laminate possesses a fine structure containing at least a fibril of 1 μm or less in an average major axis length, and at least one layer in the laminate has a plural of hole parts of a fixed average pore diameter in at least a part in a thickness direction of the laminate.
    • 要解决的问题:为了提供一种结晶聚合物微孔膜,其具有能够有效地捕获几十nm尺寸的细颗粒的微小孔隙及其制造方法,并提供用于过滤的过滤器。 解决方案:在由包含第一结晶聚合物的层和包含具有沿厚度方向穿透的多个孔部分的第二结晶聚合物的层组成的两层或更多层中的结晶聚合物微孔膜中,熔点 第一结晶聚合物高于第二结晶聚合物,至少在层压体中含有第二结晶聚合物的层具有在平均长轴长度上至少含有1μm以下的原纤维的细结构,至少 层叠体中的一层在层压体的厚度方向的至少一部分上具有固定的平均孔径的多个孔部。 版权所有(C)2012,JPO&INPIT