Self-closing sealable valve bag

Flexible bags – With closure – Self-closing type

Patent

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Details

383 44, 383 46, B65D 3026

Patent

active

055162100

ABSTRACT:
A valve bag is provided having a self-closing feature, to preclude sifting losses after filling, but before the bag is fully sealed, while enabling the facilitated final secure closure of the bag.

REFERENCES:
patent: 2147970 (1939-02-01), Dubois
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), Stearly
patent: 4367620 (1983-01-01), Fox
patent: 4391404 (1983-07-01), Welter
patent: 4453270 (1984-06-01), Donini et al.
patent: 4759640 (1988-07-01), Groner

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