Method of producing pierceable stopper
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United States of America Patent
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-
Aug 19, 2003
Grant Date -
Mar 7, 2002
app pub date -
May 18, 2001
filing date -
Nov 4, 1998
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A pierceable stopper for a liquid container, which has a pierceable part made of a thermoplastic synthetic resin elastic material. The pierceable part is formed so as to prevent leakage of liquid from the container when it is pierced with a hollow needle. The pierceable part is confined in a compressed state in the stopper body of the pierceable stopper. A molten thermoplastic synthetic resin elastic material is injected into an injection mold at an injection pressure higher than the normal injection pressure to mold the pierceable part.
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