Method for forming a sealing closure for a bottle
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United States of America Patent
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Oct 17, 1995
Issued Date -
N/A
app pub date -
Feb 16, 1994
filing date -
Jul 12, 1990
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A sealing closure for a bottle which relieves excess pressure is formed by placing an aluminum cap including a sealing disk of compressible elastic material on the bottle neck, and forming the cap by means of a die which is pressed axially against the top or frontal surface of the bottle neck. The die has circumferentially-spaced projections which produce corresponding depressions in the cap opposite the frontal surface and simultaneously compress the disk between the cap and the frontal surface leaving the areas between said depressions slightly compressed. Excess gas escapes by compressing the slightly compressed areas of the sealing disk to lift the disk off the lip of the bottle.
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