Four member valve closure assembly for valve bags

Details Four member valve closure assembly for valve bags Four member valve closure assembly for valve bags

1999-02-16

2000-06-13

Pascua, Jes F.

Flexible bags

With closure

Self-closing type

383 48, B65D 3316

Patent

active

060740957

ABSTRACT:
A valve assembly for a satchel end tubular bag comprising four members. Two members form an upper sub-assembly and two other members for a lower sub-assembly. The valve assembly is adhesively secured at a corner tuck of the satchel end within the paper plies of the bag. The upper sub-assembly is wrapped within the lower sub-assembly and forms a passageway for a product injection nozzle to be inserted therethrough for introducing product into the bag. The members of the sub-assemblies are laterally offset and each sub-assembly has said members both laterally and longitudinally offset, or stepped, to achieve strength and a sift-proof construction. Extensions of one of the members of each sub-assembly extend bag-inwardly and comprise a thin pliable material, whereby to provide improved self-closure as the product fills the bag. Both improved filling and sealing are achieved.

REFERENCES:
patent: 3191850 (1965-06-01), Niemeyer
patent: 4412645 (1983-11-01), Lepisto
patent: 4759640 (1988-07-01), Groner

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