Four member valve closure assembly for valve bags
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United States of America Patent
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-
Jun 13, 2000
Grant Date -
N/A
app pub date -
Feb 16, 1999
filing date -
Feb 16, 1999
priority date (Note) -
In Force
status (Latency Note)
Importance
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.
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