Opening device for a packaging container
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United States of America Patent
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-
Dec 13, 1994
Issued Date -
N/A
app pub date -
Jul 1, 1993
filing date -
Mar 27, 1991
priority date (Note) -
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status (Latency Note)
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Abstract
Opening device for a packaging container with an unbroken, liquid-tight pouring spout (31, 33) and a closure part (3) enclosing this. A method of manufacturing the opening device entails forming the pouring spout (21, 33) with the closure part (3) as a mould, with a heated, thermoplastic material layer being forced into the closure part through a pressure difference.
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