ROLLER WITH AN ELASTIC COVER LAYER

摘要

ROLLER WITH AN ELASTIC COVER LAYER A steel roller core is covered with an elastic cover having a polyurethane jacket. On the inside of the cover is found a rigid, fluid-impermeable, inner reinforcing tube of fiberglass-reinforced polyester. The thermal coefficient of expansion of the polyester tube is similar to that of steel. A gap or space is provided between the tube and the roller core, which gap is completely filled with adhesive. Because the jacket is seated on the rigid sleeve with prestressing as a result of thermal contraction subsequent to cooling, the cover can not separate from the roller core even under heavy loads. The cover can be mounted on the roller core by the user within a very short time. It is not necessary to ship the roller core to the resurfacing plant to renew the roller cover.