Patent ID: 6905734

Claim:
A method for covering a cylindrical roll with polyurethane, comprising the steps of: providing a cylindrical roll having two ends and a surface, wherein the cylindrical roll is attached to a variable speed turning fixture on said ends of the roll; providing a variable speed traversing mechanism having a nozzle; providing polyurethane wherein providing polyurethane comprises dispensing polyurethane via a spray dispensing mechanism; and covering the surface of the roll with up to three inches thick of polyurethane in one pass of the traversing mechanism along the length of the roll while rotating the roll via the variable speed turning fixture, wherein covering the surface of the roll comprises rotating the roll at a rate wherein, after a first portion of polyurethane contacts a longitudinal portion of the roll, most of the polyurethane dispensed from the dispensing mechanism contacts polyurethane already covering the roll, wherein the polyurethane already covering the roll has a thickness of up to approximately three inches with a viscosity of approximately 10,000 centipoises in the liquid state prior to hardening.