Press roll for paper machines
US5257966A · kind A · utility
19Cited by
10References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 7, 1991 |
| Grant date | Nov 2, 1993 |
| Priority date | — |
| Expiry date | Oct 7, 2011 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21F3/08
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.