Non-polluting waterproof cloth finish for abrasive cloth

Details Non-polluting waterproof cloth finish for abrasive cloth Non-polluting waterproof cloth finish for abrasive cloth

B - Operations, Transporting

24

D

57/7

B24D 3/28 (2006.01) B24D 3/00 (2006.01) B24D 11/02 (2006.01)

Patent

CA 1062022

ABSTRACT OF THE DISCLOSURE A woven cellulosic cloth backing of cotton or rayon yarns for the manufacture of coated abrasives, particularly for the manufacture of coated abrasive belts for wet grinding, includes a backsize, of phenolic resin which may be admixed with a polymer having a glass transition temperature between 10 and 40°C, said backsize being directly adhered to the yarns of cloth, a polymeric film forming resin adhered to the yarns of cloth to which the backsize is not adhered, said resin having a glass transition temperature between 20 and 50°C, and a front size of a mixture of phenol-formaldehyde resin and the film former resin coating above referred to. An additional front coating of phenol-formaldehyde resin may be employed to provide a smooth surface for the application of a fine grit abrasive.

274617

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