D - Textiles – Paper – 21 – H
Patent
D - Textiles, Paper
21
H
D21H 19/22 (2006.01) B41M 5/52 (2006.01) D21H 21/40 (2006.01)
Patent
CA 2738876
The invention provides a method for the manufacture of a sheet product comprising a substrate having a coating of an adhesion promoter, which comprises applying to said substrate a solution or suspension of an adhesion promoter comprising a polymer bearing carboxylic acid, salt, amide and/or ester groups, said solution or suspension also comprising an indicator material which is colourless under the conditions of application of said solution or suspension to said substrate but which generates visible colouration upon the application of suitable chemical means. The method may be used as part of a quality control method for monitoring the application of a coating of an adhesion promoter to a substrate. The resulting sheets are novel.
La présente invention concerne un procédé de fabrication dun produit en feuillets comprenant un substrat ayant pour revêtement un promoteur de l'adhésion, qui comprend létape consistant à appliquer sur ledit substrat une solution ou une suspension dun promoteur de ladhésion comprenant un polymère portant un acide carboxylique, un sel, des groupes amide et/ou ester, ladite solution ou suspension comprenant également une substance indicatrice qui est incolore dans les conditions dapplication de ladite solution ou suspension sur ledit substrat mais qui génère une coloration visible après application de moyens chimiques appropriés. Le procédé peut être utilisé comme partie d'un procédé de contrôle qualité destiné à suivre l'application d'un revêtement d'un promoteur de l'adhésion sur un substrat. Les feuillets résultants sont novateurs.
Pitcher Michael
Saunders Richard
Watson Mark
Arjo Wiggins Fine Papers Limited
Goudreau Gage Dubuc
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