D - Textiles – Paper – 21 – J
Patent
D - Textiles, Paper
21
J
92/7
D21J 1/18 (2006.01)
Patent
CA 1058927
NON-COMBUSTIBLE HARDBOARD SHEET Abstract of the Disclosure A process for preparing a non- combustible hardboard sheet is disclosed. The process comprises the formation of relatively low density insulation board type product which is dried, whereafter the board is wetted on both sides and compressed at relatively high temperatures to form a dense non-combustible hardboard product.
265610
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