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US 6,042,862 AGranted
Lidded package having a tab to facilitate peeling
AssigneeCryovac, Inc.
InventorsPatrick N. Kocher, Robin D. Owens
Life of this patent
Estimating the term…
Abstract
A package having a lid bonded to a support member with a heat-seal to enclose a product between the support member and lid. The lid is at least partially heat-shrinkable and has a first peripheral portion and a second peripheral portion, the first peripheral portion being heat-contracted toward the heat-seal to a greater degree relative to the second peripheral portion so that the second peripheral portion provides a tab which can be manually grasped for peeling the lid.
Claims16
A packaging method, comprising:
- a. positioning a web of film over a support member having a product thereon, said film being at least partially heat-shrinkable;
- b. securing a portion of said web to said support member by forming a heat-seal between said support member and said web, said heat-seal extending substantially continuously about the product to enclose the product between said support member and the secured portion of said web;
- and
- c. severing a segment of said web in a substantially closed geometrical shape that encompasses the secured portion of said web with a cutting element having a heated portion and a relatively cooler portion so that a first peripheral portion of the severed web segment adjacent the heated portion of said cutting element is heat-contracted toward said heat-seal to a greater degree relative to a second peripheral portion of the severed web segment adjacent the relatively cooler portion of said cutting element, whereby said second peripheral portion provides a tab which can be manually grasped.
1 more element
Dependencies are inferred from the claim text.