Method for making a heavy duty bag having an easy opening spout

Details Method for making a heavy duty bag having an easy opening spout Method for making a heavy duty bag having an easy opening spout

1997-01-31

1997-12-30

Lavinder, Jack W.

Manufacturing container or tube from paper; or other manufacturi

Container making

Pliable container

493237, 493267, B31B 120

Patent

active

057023395

ABSTRACT:
A plastic, heavy duty bag having an easy opening pouring spout, and a method and apparatus for forming a plastic, heavy duty bag having an easy opening pouring spout are disclosed. The bag includes a radially disposed perforation in the upper corner of the bag. Above a heat sealing strip, a slit is formed in the portion of the bag extending above the heat sealing strip, to aid in tearing through the heat seal strip to gain access to the perforation.

REFERENCES:
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patent: 3173603 (1965-03-01), Neuman
patent: 3217770 (1965-11-01), Garth
patent: 3397835 (1968-08-01), Henning
patent: 3432986 (1969-03-01), Schneider
patent: 3625351 (1971-12-01), Eisenberg
patent: 3670927 (1972-06-01), Hubbard
patent: 4285681 (1981-08-01), Walitalo et al.
patent: 4428485 (1984-01-01), Egli
patent: 4493127 (1985-01-01), Blanke, Jr. et al.
patent: 5226735 (1993-07-01), Beliveau
patent: 5482376 (1996-01-01), Moseley et al.

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