Laminated dieboard structure

Details Laminated dieboard structure Laminated dieboard structure

1991-08-30

1992-09-01

Bell, James J.

Stock material or miscellaneous articles

Sheet including cover or casing

761078, 76DIG6, 428 71, 428 73, 428284, 428421, 428422, 4284251, 4283184, B32B 104

Patent

active

051437686

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.

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patent: 5008359 (1991-04-01), Hunter
Gaul et al., Proceedings of the S.P.I. International Technical/Marketing Conference, pp. 399-407 (1983).
U.S. patent application Ser. No. 07/680,810, entitled "A Multi-Functional Exterior Structural Foam Sheeting Panel."
U.S. patent application Ser. No. 07/618,723, entitled "Isocyanate Modified Cellulose Products and Method for Their Manufacture."

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