What Is Involved In Covering a Roller?
1. WHEN A ROLLER IS RECEIVED, IT IS FIRST ENTERED INTO THE SYSTEM.
2. THE JOURNALS OR SHAFTS ARE CHECKED FOR WEAR AND IF NEEDED THE JOURNALS ARE BUILT UP AND THEN MACHINED TO THE SPECIFIED SIZE. Person checking the journals or shafts.
3. THE ROLLER IS THEN MOUNTED INTO A LATHE AND THE OLD RUBBER OR URETHANE IS THEN STRIPPED OFF OF THE CORE. Roller mounted & being stripped.
4. THE ROLLER CORE IS THEN CLEANED TO THE BARE METAL AND PREPARED TO RECEIVE THE APPROPRIATE BONDING ADHESIVE. Roller being cleaned & adhesive applied.
5. A PRIMER IS FIRST APPLIED AND…. Primer is applied to the roller.
…THEN A TOP COAT OF THE PROPER ADHESIVE IS APPLIED OVER THE PRIMER. Adhesive is applied.
6. AFTER ALLOWING AMPLE TIME FOR THE PRIMER AND ADHESIVE TO DRY, THE UNCURED RUBBER IS WRAPPED AROUND THE CORE UNTIL IT IS APPROXIMATELY ONE HALF INCH LARGER THAN THE FINISHED DIAMETER. Rubber is wrapped around the core of the roller.
7. ONCE THE UNCURED RUBBER IS APPLIED, A HEAT SENSITIVE POLYESTER SHRINK TAPE IS THEN WRAPPED AROUND THE ROLLER IN A SPIRAL FASHION BEGINNING IN THE MIDDLE AND GOING TO EACH END AND RETURNING TO THE MIDDLE. Shrink tape is applied to the roller.
8. ONCE THESE PROCEDURES HAVE BEEN ACCOMPLISHED, THE ROLLER IS PLACED IN AN AUTOCLAVE TO CURE THE RUBBER, AS WELL AS BOND THE RUBBER TO THE CORE. IN ORDER FOR RUBBER TO CURE, IT REQUIRES BOTH HEAT AND PRESSURE. Roller is placed in autoclave.
9. ONCE THE RUBBER IS CURED AND THE RUBBER HAS BEEN BONDED TO THE CORE, IT IS THEN MOUNTED INTO A GRINDING LATHE. THE ROLLER IS THEN GROUND TO THE PROPER SIZE AND TRIMMED TO SPECIFICATIONS. Roller mounted on a lathe for trimming.