Patent ID: 9505543
Filing Date: 2016-11-29
CPC Classification: B32B,B65D

Claim Text:
1. A heatable package comprising: an inner region configured to receive a product; a sealing film, the sealing film being comprised of at least one layer of a microwavable film adapted for use in heating the product, the sealing film having an outer surface and an inner surface, the inner region of the heatable package being hermetically sealed by at least a portion of the sealing film; and at least one weakened wall pattern scored by a laser into a portion of the outer surface of the sealing film at a depth that does not perforate the sealing film the inner surface adjacent to each weakened wall pattern being directly exposed to pressure generated in the inner region, wherein the weakened wall pattern has a wall thickness of 5 μm to approximately 25 μm so that at least a steam pressure of 0.25 psi is maintained in the package during heating.