Bottles and jars – Closures – Barrier permeable to gas and impermeable to liquid
Patent
1994-10-31
1996-12-03
Cronin, Stephen
Bottles and jars
Closures
Barrier permeable to gas and impermeable to liquid
215308, 215349, B65D 5300
Patent
active
055799361
ABSTRACT:
A dual cap lining for bi-directional venting comprising a substantially shaped, laminated or secured, fluid-impermeable, gas-permeable material bottom layer congruent with a container opening, and having an extruded and cast polyethylene material top layer which is provided with channels on the lower 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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Campbell G. Edward
Costa Stephen M.
Sibert William P.
Cronin Stephen
Pacini Harry A.
The Clorox Company
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