D - Textiles – Paper – 21 – H
Patent
D - Textiles, Paper
21
H
D21H 21/28 (2006.01) B32B 29/00 (2006.01) B44C 5/04 (2006.01) D21H 27/26 (2006.01)
Patent
CA 2084159
ABSTRACT Certain water insoluble basic salts and, more particularly, alkaline earth metal hydroxides are introduced to the papermaking furnish for a decor sheet. The decor sheet which is coloured by a sulphur dye and contains the water insoluble basic salts exhibits good postformability. The water insoluble basic salts prevent the sulphur dyes from catalyzing curing of the resin and thus yields a decor sheet with good postformability. A combination of water soluble salts is added to the furnish which interacts by ion exchange to precipitate a water insoluble basic salt in the furnish. For example, an alkaline earth metal salt such as magnesium sulphate is reacted with sodium hydroxide to precipitate magnesium hydroxide in the furnish.
Gowling Lafleur Henderson Llp
The Mead Corporation
LandOfFree
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