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US Patent 7101935 Longitudinal shrink films

Patent 7101935 was granted and assigned to Plastic Suppliers, Inc. on September, 2006 by the United States Patent and Trademark Office.

Overview Structured Data Issues Contributors

Is a

Patent

Patent attributes

Current Assignee

Plastic Suppliers, Inc.

Patent Jurisdiction

United States Patent and Trademark Office

Patent Number

7101935

Date of Patent

September 5, 2006

Patent Application Number

11009018

Date Filed

December 13, 2004

Patent Primary Examiner

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Nathan M. Nutter

Patent abstract

A heat-shrinkable film and a method of its manufacture are provided. In an exemplary embodiment, a polystyrene film exhibits heat-induced growth in the cross direction of great than or equal to 5% with greater than or equal to 30% concomitant shrinkage in the machine direction. The films may comprise crystal polystyrene, high impact polystyrene, and/or elastomers. A method of manufacture is disclosed which includes a post-extrusion temperature conditioning step.