03947307 is referenced by 30 patents and cites 5 patents.

The invention relates to an ultrasonic welding, apparatus for a flexible fluid container fabricated of synthetic thermoplastic material having a welding surface, thin walls and a rim, and closed but for a single opening for fluid-tight welding of the connecting piece into the container, which is also fabricated of synthetic thermoplastic material. A welding ring focusses the ultrasonic energy to the welding surfaces. A ring-shaped base terminates the connecting piece.

Title
Apparatus for fluid-tight welding of a closable connecting piece into a thin-walled container
Application Number
5/492924
Publication Number
3947307
Application Date
July 29, 1974
Publication Date
March 30, 1976
Inventor
Kurt Buchscheidt
Ettlingen, Baden
DT
Agent
Herbert Dubno
Karl F Ross
Ernest G Montague
Assignee
Elbatainer Kunststoff und Verpackungsgesellschaft mit beschrankter Haftung
DT
IPC
B32B 5/18
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