Process for producing hard roll
AssigneeYamauchi Corporation
InventorAtsuo Watanabe
Life of this patent
Estimating the term…
Abstract
A hard roll is produced by a process utilizing the steps of winding a fiber material impregnated with a thermosetting resin around the outer peripheral surface of a metal roll core to form a fiber-reinforced lower winding layer, then injecting a thermosetting synthetic resin material into a mold of predetermined size and curing the material at a specified temperature to form an outer layer hollow cylinder separately from the first step. The next stepsave fitting the outer layer cylinder around the roll core covered with the winding layer, and injecting an adhesive of low viscosity into an annular clearance between the winding layer and the cylinder and then curing the adhesive at a specified temperature to bond the winding layer to the cylinder with the layer of adhesive.
Claims17
A process for producing a hard roll comprising:
- a first step of winding a fiber material impregnated with a thermosetting resin around the outer peripheral surface of a metal roll core to form a fiber-reinforced lower winding layer,
- a second step, independent from the first step, of injecting a thermosetting synthetic resin material into a mold of predetermined size and curing the material at an elevated temperature to form an outer layer hollow cylinder independent from the metal roll core having said fiber-reinforced lower winding layer, and
- a third step of fitting the outer layer hollow cylinder around the metal roll core covered with the lower winding layer, forming an annular clearance therebetween, then injecting an adhesive into said annular clearance, said adhesive having an appropriate viscosity for flowing into said clearance, forming an adhesive layer therein, and curing the adhesive at an elevated temperature to bond the lower winding layer to the cylinder with the adhesive layer.
Dependencies are inferred from the claim text.