Sonic valve closure assembly for valve bags

Details Sonic valve closure assembly for valve bags Sonic valve closure assembly for valve bags

1998-01-22

2000-01-11

Scherbel, David A.

Manufacturing container or tube from paper; or other manufacturi

Container making

Rigid container

B65D 3024

Patent

active

060130180

ABSTRACT:
The present invention is a valve bag with a valve assembly that provides closure during and after the filling process, thus preventing unwanted spilling and sifting of the valve bag contents through the valve opening during transporting or moving the bag to a location in which the valve is permanently sealed, and methods for making and filling such a bag.

REFERENCES:
patent: 2147970 (1939-02-01), Du Bois
patent: 3130897 (1964-04-01), Poklukar et al.
patent: 3191850 (1965-06-01), Niemeyer
patent: 3261267 (1966-07-01), Becker
patent: 4049191 (1977-09-01), Stearley
patent: 4367620 (1983-01-01), Fox
patent: 4391404 (1983-07-01), Welter
patent: 4453270 (1984-06-01), Donni et al.
patent: 4759640 (1988-07-01), Groner
patent: 4930904 (1990-06-01), Groner et al.
patent: 5071699 (1991-12-01), Pappas et al.
patent: 5516210 (1996-05-01), Kelley et al.

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