Cellulosic construction panel

Details Cellulosic construction panel Cellulosic construction panel

1990-11-13

1993-02-16

Sluby, P. C.

Stock material or miscellaneous articles

Structurally defined web or sheet

Continuous and nonuniform or irregular surface on layer or...

428513, 428514, 428516, 428910, B32B 2104, B32B 2710

Patent

active

051870002

ABSTRACT:
A panel, especially a construction panel, formed from a substantially inflexible cellulosic substrate having a rough or uneven surface is disclosed. The substrate is coated with a layer of a grafted polyolefin and a layer of kraft paper or veneer. The polyolefin is a homopolymer of ethylene or copolymer of ethylene and at least one C.sub.4 -C.sub.10 hydrocarbon alpha-olefin having a melt index of less than 20 dg/min that has been grafted with at least 9 ppm of an ethylenically unsaturated carboxylic acid or anhydride. One-step and multi-step processes for the manufacture of the panels are disclosed. The panels may be painted or coated by other means, and are useful in the construction industry, especially for interior surfaces of buildings. The panels may be formed from cellulosic substrates that may not otherwise be useful for the end-uses of the panels.

REFERENCES:
patent: 3215556 (1965-11-01), Kehr
patent: 3817822 (1974-06-01), Dawes
patent: 4020215 (1977-04-01), Michaylov
patent: 4195109 (1980-03-01), Long

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