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:
Sep. 01, 1992
Filed:
Aug. 30, 1991
Applicant:
Inventors:
Ronald C Wilderman, Sumner, WA (US);
David W Park, Puyallup, WA (US);
Assignee:
Weyerhaeuser Company, Tacoma, WA (US);
Primary Examiner:
Int. Cl.
CPC ...
B32B / ;
U.S. Cl.
CPC ...
428 68 ; 761078 ; 76DI / ; 428 71 ; 428 73 ; 428284 ; 428421 ; 428422 ; 4284251 ; 4283184 ;
Abstract
This invention is directed to a dieboard comprising a rigid core of a plastic material, such as polyurethane, having a polyurea-cellulose composite secured to its opposed major surfaces. The polyurea-cellulose composite imparts substantial dimensional stability to the laminated dieboard. A layer of a liquid impermeable material, such as a film, can be secured to the outer major surfaces of the dieboard. By making this outer layer of a light color, such as white, the projection of CAD or hand-drawing slotting templates onto the dieboard surface is facilitated.