Glass fiber sized web and process of making same

Details Glass fiber sized web and process of making same Glass fiber sized web and process of making same

D - Textiles, Paper

21

H

D21H 13/40 (2006.01) C03C 25/10 (2006.01) D21H 17/07 (2006.01)

Patent

CA 2547578

A glass fiber web and a wet lay process of making the glass fiber web. The glass fibers of the web include glass fibers sized with a sizing composition which includes a partially amidated polyalkylene imine cationic lubricant randomly dispersed in a cured thermosetting resin. The wet lay process includes the steps of so sizing the glass fibers followed by separating such fibers by immersing the glass fibers in an aqueous dispersant medium to form an aqueous dispersion which is agitated. The separated sized glass fibers are dried. The dried, sized glass fibers are then bound with the thermosetting resin binder. The curing of the binder produces the product glass fiber web.

L'invention porte sur une bande de fibres de verre encollées et sur son procédé humide d'obtention. Les fibres de verre de la bande sont encollées au moyen d'un apprêt contenant un lubrifiant cationique de polyalkylène-imine partiellement amidé dispersé aléatoirement dans une résine thermodurcissable durcie. Le processus humide comporte les étapes suivantes: (i) le susdit encollage; (ii) séparation des fibres en les immergeant dans milieu dispersant aqueux pour former une dispersion; (iii) agitation de la dispersion; (vi) séchage des fibres; (v) liaison des fibres sèches à l'aide d'un liant de résine thermodurcissable; et (vi) durcissement du liant donnant le produit final.

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