Electric heating – Microwave heating – Cookware
Patent
1994-11-10
1995-11-07
Leung, Philip H.
Electric heating
Microwave heating
Cookware
219727, 426107, 426118, 426234, 99DIG14, H05B 680
Patent
active
054649692
ABSTRACT:
A self-venting package adapted for microwave cooking having first and second package walls made from thermoplastic polymeric film where the second package wall is joined at a portion of its perimeter to the first package wall thus creating a product receiving chamber defined between the first and second walls. The chamber is adapted to receive a product to be heated and the package is sealed by at least one multilayered seal strip having a thermoplastic polymeric film construction that is placed between the first and second package walls at an edge of the package. The seal strip consists of a first outer layer, positioned adjacent to an inner surface of the first package wall and adapted to be sealed thereto, a second outer layer, positioned adjacent to an inner surface of the second package wall and adapted to be sealed thereto, and a tie layer disposed between the first and the second outer layers where the tie layer is peelably bonded to the first outer layer and the second outer layer. Thus, after the product is introduced into the product receiving chamber and the package is sealed, and sufficient force is exerted against the seal strip from pressure generated internal to the product receiving chamber, venting of the package will take place through the seal strip to thereby reduce the internal pressure within the chamber and prevent explosion of the package during heating.
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Curwood Inc.
Leung Philip H.
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