Bi-directional venting liner

Details Bi-directional venting liner Bi-directional venting liner

1994-03-31

1998-03-24

Moy, Joseph M.

Bottles and jars

Closures

Barrier permeable to gas and impermeable to liquid

215363, 215347, B65D 5116

Patent

active

057303061

ABSTRACT:
A dual cap lining for bi-directional venting comprising a substantially round, disc-shaped, laminated, fluid-impermeable, gas-permeablematerial bottom layer, and having an extruded and cast polyethylene material top layer which is provided with apertures which communicate with the bottom layer and also communicate with channels provided on the upper surface of the top layer, and the material of construction of the laminated bottom layer is gas-permeable such that the dual lining allows bi-directional gas flow therethrough, for gases which have built-up in the interior of the connected container to safely escape by venting from the interior of the container to the external ambient atmosphere through openings existing between the spiral screw threads of the cap closure and threads of the container neck, and the reverse venting to equilibrate for relatively increased external pressure, without passage of solid or liquid material from the interior of the container through the lining to the closure and to the exterior of the container.

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American Heritage Dictionary 1982 p. 258 definition of "Channel".

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