Method for manufacturing, filling and closing a receptacle made of thermoplastic material
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United States of America Patent
Stats
-
Oct 21, 1980
Issued Date -
N/A
app pub date -
Mar 13, 1978
filing date -
Mar 15, 1977
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The method comprises the forming in one piece of the side wall and an end wall of the receptacle, the sealing of a covering foil or cap on the outer face of the end wall, the forming of a slot at least partially closed on itself by partially melting thermoplastic material of the end wall with at least a zone of the end wall surrounding the slot and a part of the end wall surrounded by the slot being hermetically fast with the covering foil or cap, the filling of the receptacle through an opening opposite the end wall, and the closing of said filling opening by a separate bottom, whereby an extraction opening delimited by the slot is made by pulling the covering foil or cap.
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