The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 26, 2012
Filed:
Sep. 19, 2007
Eugenio Longo, Rho, IT;
Andrea Paci, Milan, IT;
Eugenio Longo, Rho, IT;
Andrea Paci, Milan, IT;
Cryovac, Inc., Duncan, SC (US);
Abstract
The present invention relates to a process for thermoforming a foamed polyester sheet of low crystallinity to produce a heat-resistant molded foam article (). The process comprises the steps of heating a foamed polyester sheet () to a preforming temperature by contact with at least one heating plate and molding the heated foamed polyester sheet onto a non-heated mold (). The present invention further relates to a process for manufacturing a package by thermoforming a foamed polyester sheet of low crystallinity to produce a heat-resistant molded foam container, loading a product () into said container and sealing or welding a film of thermoplastic material () onto said container to close it. The heat-resistant molded foam articles and the packages thus obtained are excellent in heat resistance and are not thermally distorted even when heated in a microwave or conventional oven. They are particularly useful for the packaging of food products for dual ovenable applications.