Valved bag with sealing flap

Details Valved bag with sealing flap Valved bag with sealing flap

1983-02-28

1984-02-07

Price, William

Flexible bags

Lifting or suspending element

383 44, F42B 0300, B65D 3022, B65D 3024, B65D 3314

Patent

active

044307527

ABSTRACT:
A valved bag including elongate facing outer walls peripherally secured together except for an unsecured end region, an inner wall between the outer walls extending across the unsecured region and secured to one outer wall partially across the unsecured region to leave an access passageway, extensions on the inner and other outer wall extending across the unsecured region and secured together to close the unsecured region, and a sealing flap exteriorly of the inner wall extension and the adjacent region of the secured outer wall and secured thereto for removable sealing engagement with the later by internal pressure of the bag.

REFERENCES:
patent: 2119895 (1938-06-01), Sutton
patent: 3523563 (1970-08-01), Mirando
patent: 3783787 (1974-01-01), Thornley et al.
patent: 3806025 (1974-04-01), Marshall
patent: 3957098 (1976-05-01), Hepworth et al.

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