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US 5,023,985 AGranted
Coated roll for a paper making machine
AssigneeValmet Paper Machinery Inc.
InventorsJukka Salo, Pentti Lehtonen
Life of this patent
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Abstract
A roll for a pulp machine, paper machine, or paper finishing machine with a cylinder mantle of cast iron or steel, or any other equivalent metal, which bears the mechanical loads. On the roll mantle, fixed to the outer face of the mantle, there is a resilient polymer coating, and onto the polymer coating a coating is fixed which is by several orders thinner than the radial thickness of the polymer coating. This coating fixed onto the outer face of the polymer coating is a metal, ceramic, cermet or plastic coating.
Claims14
A roll for a pulp machine, paper machine or paper finishing machine comprising:
- a roll or cylinder mantle;
- a resilient polymer coating which is formed on an outer surface of said mantle, said resilient polymer coating having a thickness within a range of 2 to 35 millimeters;
- and
- another coating which is formed on an outer surface of said resilient polymer coating of a harder and more wear-resistant material than said resilient polymer coating, another coating having a thickness within a range of 1 to 150 microns.
1 more element
Dependencies are inferred from the claim text.