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:
Aug. 09, 1994
Filed:
Oct. 30, 1992
Applicant:
Inventors:
Pai-Chuan Wu, Cincinnati, OH (US);
Thomas R Ryle, Burlington, KY (US);
Leopoldo V Cancio, Cincinnati, OH (US);
Assignee:
Clopay Plastic Products Company, Inc., Cincinnati, OH (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B29C / ; B29C / ;
U.S. Cl.
CPC ...
264171 ; 2642101 ; 2642106 ; 264284 ; 2642884 ; 260D / ;
Abstract
Compostable polymeric sheets of biodegradable or environmentally degradable polymers are included. These composite sheets may be made by extrusion and are compostable in municipal solid waste treatment facilities. The composite film is formed by coextrusion of top and bottom water insoluble thermoplastic films having a water soluble polymer therebetween and stretching the composite along line space substantially uniformally across and through the depth of the composite for weakening the strength of the composite while maintaining its water impermeability.