Ventable cap

Bottles and jars – Closures – Barrier permeable to gas and impermeable to liquid

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Details

215308, 215329, 215902, B65D51/16;53/00

Patent

active

059018674

ABSTRACT:
A vented closure is provided in which a PTFE membrane layer comprises a vent for releasing accumulated gas pressure. The membrane is carried on a structural support which may vary from a fabric type backing to a porous plastic stem, the support permitting a variety of improved vent architecture to be utilized including vents with reduced material requirements, improved geometry, and better handling characteristics.

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