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Container for fluids

  • US 5,657,891 A
  • Filed: 04/30/1996
  • Issued: 08/19/1997
  • Est. Priority Date: 05/18/1993
  • Status: Expired due to Fees
First Claim
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1. A gas venting system for a container comprising:

  • a) a container suitable for containing and dispensing liquids, said container having an inside and a discharge orifice, said discharge orifice having a reclosable closure to reversably seal said discharge orifice from liquid escape;

    b) a perforated member located in said closure, said perforated member providing fluid communication between said inside of said container and ambient air outside said container; and

    c) a microporous film in contact with said perforated member, such that when said closure seals said container, said microporous film is gas permeable to vent gas into and out of said container in response to a pressure of less than 100 millibar, and is liquid impermeable to prevent passage of liquids having a surface tension of less than 30 dyne/cm.

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