Press roll for paper machines

Details Press roll for paper machines Press roll for paper machines

1991-10-07

1993-11-02

Eley, Timothy V.

Roll or roller

With specific roller exterior surface structure

Surface projections, indentations, or slits

492 48, 492 53, 493467, 100155R, B21B 3108, B60B 500, B60B 2100

Patent

active

052579662

ABSTRACT:
A paper machine press roll comprising a metal core, a ground layer formed over the outer periphery of the core and made of a metal material having a small coefficient of expansion, and a mixture layer formed over the outer periphery of the ground layer and comprising a ceramic and a water retentivity imparting particulate substance such as mica. At least in a surface layer portion of the mixture layer, an organic high polymer such as synthetic resin or wax is filled in the interstices between particles of the ceramic and particles of the water retentivity imparting substance.

REFERENCES:
patent: 2804678 (1957-09-01), Rockoff
patent: 2863175 (1958-12-01), Meyer
patent: 4441417 (1984-04-01), Katayama et al.
patent: 4533581 (1985-08-01), Asaumi et al.
patent: 4704776 (1987-11-01), Watanabe et al.
patent: 4888464 (1989-12-01), Shibata et al.
patent: 4967663 (1990-11-01), Metcalf
patent: 4977830 (1990-12-01), Fadner
patent: 5033380 (1991-07-01), Sonobe et al.
patent: 5111567 (1992-05-01), Leino et al.
European Search Report, EP 91 11 7054 "Substitutes for Granite Rolls", Eucepa Conference, May 8-11, 1990.

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