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. 20, 2000
Filed:
Aug. 05, 1997
Applicant:
Inventors:
Eldon Lawrence Fletcher, Kingston, CA;
Anthony Joseph Cesaroni, Unionville, CA;
Rodney Martin, Toronto, CA;
Assignee:
Du Pont Canada Inc., Mississauga, CA;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
B32B / ;
U.S. Cl.
CPC ...
156 736 ; 156209 ; 15624427 ; 1563082 ; 156324 ; 264175 ;
Abstract
A method for making multilayer polymer films with involves the use of preferably embossed rollers which oscillate oppositely with respect to each along their respective rotational axis. Multilayer film is made by passing two or more molten thermoplastic films through the nip of these rollers, thereby laminating the individual films together. The method is particularly useful for improving the adhesion between film layers, and/or when at least one of the layer is a liquid crystalline polymer. Such films are useful in packaging, multilayer containers and for circuit boards.