Roll, in particular, calender roll

Paper making and fiber liberation – Apparatus – Running or indefinite length product forming and/or treating...

Reexamination Certificate

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C162S198000, C492S020000, C492S053000, C029S895300

Reexamination Certificate

active

07018512

ABSTRACT:
A paper processing roll for use in a calender of a paper-making machine which during operation can be exposed to increased temperatures is provided with a heat-treated surface which is produced by hot-grinding or hot-balancing or both.

REFERENCES:
patent: 3753276 (1973-08-01), Reisch
patent: 3775241 (1973-11-01), Justus et al.
patent: 3944444 (1976-03-01), Thiess et al.
patent: 4160048 (1979-07-01), Jaeger
patent: 4607420 (1986-08-01), Vomhoff
patent: 5096734 (1992-03-01), Nikulainen et al.
patent: 5334125 (1994-08-01), Vahapesola
patent: 5371975 (1994-12-01), Lundmark
patent: 5940969 (1999-08-01), Kuosmanen et al.
patent: 37 14 187 (1986-04-01), None
Smook, G.A. Handbook for Pulp and Paper Technologists, pp. 258, 259, 267 (1992).

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