Opening device for a packaging container and method of manufacturing the same
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United States of America Patent
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Mar 12, 1996
Grant Date -
N/A
app pub date -
Mar 16, 1992
filing date -
Mar 27, 1991
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Opening device for a packaging container with an unbroken, liquid-tight pouring spout (31, 33) and a closure part (3) is disclosed. A method of manufacturing the opening device entails forming the pouring spout (21, 33) with the closure part (3) as a mold, with a heated, thermoplastic material layer being forced into the closure part through a pressure difference.
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