Method of stabilizing belt edge yarns

Abstract

The raw edges of a belt having an elastomeric carcass encasing one or more fabric mats are stabilized by treating the edges with a low viscosity, quick hardening adhesive which is quickly wicked into the fabric cords or yarns in the region of the edge and hardens within a few seconds so as to form a durable bond between adjacent yarns and between the yarns and the elastomeric carcass.

1 . A method of treating edges of a belt containing a fabric mat having yarns exposed at said edges and prone to fraying without treatment, comprising the steps of:
 a) selecting a low viscosity adhesive, which hardens quickly; and   b) applying said adhesive to said edges.   
   
   
       2 . The method of treating edges of a belt, as defined in  claim 1 , wherein said adhesive is selected from a type commonly called super glues. 
   
   
       3 . The method of treating edges of a belt, as defined in  claim 1 , wherein said low viscosity is in the neighborhood of the viscosity of water. 
   
   
       4 . The method of treating edges of a belt, as defined in  claim 1 , wherein said low viscosity has a value low enough to permit said adhesive to penetrate the yarns in the region of said edges to a depth of at least ⅛″ before it hardens. 
   
   
       5 . The method of treating edges of a belt, as defined in  claim 4 , wherein said adhesive is such that said yarn becomes relatively hard when combined with said yarn and provides good resistance to wear. 
   
   
       6 . The method of treating edges of a belt as defined in  claim 1 , wherein said low viscosity has a value low enough to permit said adhesive to penetrate to a depth of at least one yarn diameter before it hardens. 
   
   
       7 . The method of treating edges of a belt, as defined in  claim 1 , wherein the adhesive selected is a cyanoacrylate adhesive. 
   
   
       8 . The method of treating edges of a belt, as defined in  claim 1 , wherein the adhesive selected is an ethyl cyanocrylate adhesive. 
   
   
       9 . The method of treating edges of a belt, as defined in  claim 1 , wherein the adhesive selected is an anaerobic adhesive. 
   
   
       10 . The method of treating edges of a belt, as defined in  claim 1 , wherein the adhesive has a viscosity in the range of 1-20 cps.