Adhesion of rubber to fabric or steel cord can be significantly improved with the so called RFS-system (Resorcinol Formaldehyde Silica). No dipping of the cord is necessary compared to the old RFL system. In COFILL® 11 we combine the resorcinol with the silica. Handling of COFILL® 11 is much safer than handling resorcinol alone but delivering the same excellent adhesion. 


COFILL® is used together with a formaldehyde donor like hexamethylene tetramine.