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发明授权
US08057718B2 Microporous polyethylene film having excellent physical properties, productivity, and quality consistency, and method of producing same 有权
具有优异的物理性能，生产率和质量一致性的微孔聚乙烯膜及其制造方法

Microporous polyethylene film having excellent physical properties, productivity, and quality consistency, and method of producing same
摘要：
Disclosed herein is a microporous polyethylene film for a battery separator and a method of producing the same. The microporous polyethylene film is made from a resin composition. The resin composition comprises 100 parts by weight of a polyethylene composition including 10-50 wt % polyethylene having a weight average molecular weight of from 2×105 to less than 5×105 (component I) and 90-50 wt % diluent (component II), and 0-150 parts by weight of inorganic powder (component III). The film has a puncture strength of 0.20 N/μm or more and a gas permeability (Darcy's permeability constant) of 1×10−5 Darcy or more. The microporous polyethylene film has excellent physical properties, thus improving the performance and stability of a battery.
摘要（中）：

本文公开了一种用于电池隔膜的微孔聚乙烯膜及其制造方法。 微孔聚乙烯膜由树脂组合物制成。 树脂组合物包含100重量份的聚乙烯组合物，其包含10-50重量％的重均分子量为2×10 5至小于5×10 5（组分I）的聚乙烯和90-50重量％的稀释剂（组分II ）和0-150重量份的无机粉末（组分III）。 该膜的穿刺强度为0.20N /μm以上，透气度（达西渗透率常数）为1×10-5达西以上。 微孔聚乙烯膜具有优异的物理性能，因此提高了电池的性能和稳定性。

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