Method for bonding a coating on a roller

Abstract

A roller for a conveyor comprising a cylindrical core defining a support surface; a helical groove disposed in said support surface and lagging bonded to said support surface.

1 . A method of coating a roller comprising: (a) rotating said roller; (b) applying a lagging material unto said outer support surface of said rotating roller while axially moving said lagging material to coat said roller; (c) curing said lagging material. 
     
     
         2 . A method as claimed in claim  13  comprising forming a spiral groove into said outer support surface prior to applying said lagging material. 
     
     
         3 . A method as claimed in claim  14  wherein said lagging material comprises urethane poured unto said roller. 
     
     
         4 . A method as claimed in claim  15  wherein said urethane pours unto said roller as a line. 
     
     
         5 . A method as claimed in claim  16  comprising forming two opposed spiral grooves from either end of said roller. 
     
     
         6 . A method as claimed in claim  17  wherein said outer diameter of said end is less than the outer diameter of an intermediate region between said ends. 
     
     
         7 . A method as claimed in claim  18  wherein said spiral groove is formed in a lathe. 
     
     
         8 . A method as claimed in claim  19  wherein said urethane is poured unto said outer surface in a line by gravity at a temperature of 80.degree. F. and 90.degree. F.