Michael Roy Berry

US Patent:

60740957, Jun 13, 2000

Filed:

Feb 16, 1999

Appl. No.:

9/251068

Inventors:

Roger Bannister - Crossett AR
John D. Aiken - Hamburg AR
Michael A. Berry - Hamburg AR

Assignee:

Bemis Company, Inc. - Minneapolis MN

International Classification:

B65D 3316

US Classification:

383 54

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.