Flexible bags – With venting or ventilation means
Patent
1991-07-24
1993-03-23
Elkins, Gary E.
Flexible bags
With venting or ventilation means
383104, 383120, 383124, B65D 3016, B65D 3020
Patent
active
051958295
ABSTRACT:
A package is described comprising a bag with a pair of opposing face panels joined by longitudinally extending centrally projecting gussets. The bottom of the bag has a strong permanent seal containing a stiffening member or stay. The top has a rupturable seal formed from thermoplastic adhesive that allows the top to open during popping to form a vent. The bottom seal includes adhesive seals that extend diagonally from the center of the bag obliquely toward the side edges and is pinched shut to provide a temporary fin seal across the entire lower end of the bag. The temporary fin seal is folded down and bonded to an outside face of the bag to provide the stiffening stay member. During cooking, the popping of corn expands the bag and forms a bottom wall which is held quite flat by the cooperation of the bottom diagonal seals and the stiffening stay member.
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Brandberg Lawrence C.
Watkins Jeffrey T.
Elkins Gary E.
Golden Valley Microwave Foods Inc.
Harmon James V.
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