These rollers are used to deliver case of beer to an automatic palletizing machine and are located at the end of a belt conveyor and at right angles to the conveyor. Polyurethane is also used extensively where rollers are handling sharp-edged or abrasive materials. Examples in this case are rollers for feeding thermoplastic strips to granulators, mills for dehusking rice, and rollers in a glass fibre chopping plant where the cutting of the glass fibre takes place on the rollers itself. Second examples include feed rollers in a plant for the sanding of plywood pannels, computer programme card feed rollers, and guide rollers in a plant for the manufacture of plate glass. The cement conveyor was originally fitted with cast iron rollers witch required replacement in less than 12 week. Substitution of polyurethane for the cast iron showed an immediate improvement and the useful life of the rollers was increased to more than 12 months.
These few example give an indication of the wide use of polyurethane rollers and the very definite advantages to be gained from their use.
The desired roofing material available in the market ranges from brick and cement, roof tiles and roof marble to wood, stone and metal. The newest addition to this list is the polyurethane foam.
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Different kinds of polyurethane rollers are manufactured in industries at various dimensions. This method is called rotational casting or ribbon flow molding. Polyurethane is used in manufacturing automobile seats in a most remarkable manner. This rubber foam is used in houses ,furniture, sculptures,etc. Rubber Pad
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