Sealing member for a cap featuring excellent safety and environmental friendliness, and metal cap
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United States of America Patent
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Apr 12, 2005
Grant Date -
May 8, 2003
app pub date -
Nov 4, 2002
filing date -
Nov 2, 2001
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A sealing member for a cap featuring excellent cap performance as well as excellent safety and environmental friendliness, and a metallic cap. A foamed polyurethane elastomer having a JIS A hardness of from 15 to 65 and a foaming magnification of from 1.1 to 10 times is used as the sealing member so as to obtain excellent sealing performance, durability, safety and environmental friendliness. The sealing member is provided for a metallic cap shell that has a polyester film formed on the inner surface of the cap, thereby to obtain a cap featuring excellent sealing performance, durability, safety and environmental friendliness.
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