发明名称 Filter cap
摘要 A venting closure (10) for containers (12) having a pour opening (14) defined by a circumferential rim (16) includes a top wall (20) having inner (22) and outer (24) surfaces. A side skirt (26) extends from the top wall (20) about the inner surface (22). A liner (28) is mounted adjacent the inner surface (22) for perfecting a seal between the top wall (20) and the circumferential rim (16) when the closure (10) is secured upon the rim (16) and over the opening (14). The liner (28) includes a gas impermeable non-hydrophobic portion (30) at least about the periphery of the liner (28) and an integral gas permeable hydrophobic portion (32) offset therefrom.
申请公布号 US4765499(A) 申请公布日期 1988.08.23
申请号 US19870139015 申请日期 1987.12.29
申请人 VON REIS, CHARLES;VIZULIS, KARLIS 发明人 VON REIS, CHARLES;VIZULIS, KARLIS
分类号 B65D51/16;B65D51/18;B65D53/04;(IPC1-7):B65D51/16 主分类号 B65D51/16
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