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:
Mar. 23, 1993
Filed:
Nov. 22, 1991
Applicant:
Inventors:
James M Kittrell, Mobile, AL (US);
Charles F Gibbons, Mobile, AL (US);
Allan A Whillock, Mobile, AL (US);
Joe L Kinsey, Jr, Irvington, AL (US);
Cynthia L Tanner, Mobile, AL (US);
Assignee:
International Paper Company, Tuxedo Park, NY (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B32B / ; B32B / ;
U.S. Cl.
CPC ...
428513 ; 428514 ; 428520 ; 428522 ; 4285375 ; 4285428 ;
Abstract
The present invention relates to a novel coextrusion coating for paper or paperboard substrates. The coextrusion includes a nonpolar polymer layer and a thin exterior skin layer made up of a nonpolar polymer and a polar copolymer. The addition of the polar polymer improves long term treatment level retention which improves long term wettability for printing and gluing adhesion during package or carton formation.