Method of producing sealed packaging containers

Details Method of producing sealed packaging containers Method of producing sealed packaging containers

1979-12-18

1981-09-22

Culver, Horace M.

Package making

Methods

Forming a cover adjunct or application of a cover adjunct to...

53456, 53469, 53403, 53404, 53480, 493213, 493220, B65B 5102, B65B 128, B65B 318

Patent

active

042902533

ABSTRACT:
Method of manufacturing a filled packaging container comprising the steps of forming a bag on a mandrel, connecting a seam provided in a formed bag, forming a hole on an upper side of the bag and inserting a valve into the hole to provide an air pressure release after filling the container with a material. Two opposite edges of the valve are formed with two flexible portions made of foil. A sealing fluid is applied in the channel to provide a fluid film to connect the foil portions.

REFERENCES:
patent: 2092445 (1937-09-01), Doulgheridis
patent: 2946502 (1960-07-01), Metzger
patent: 3191360 (1965-06-01), Meissner et al.
patent: 3442061 (1969-05-01), Grafingholt
patent: 3530773 (1970-09-01), Kuhnle et al.
patent: 3555778 (1969-02-01), Kapare

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