Paper machine belt
US4552620A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 19, 1983 |
| Grant date | Nov 12, 1985 |
| Priority date | — |
| Expiry date | Sep 19, 2003 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/249981
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
An endless impervious, oil, abrasion and crush resisting belt for paper making machinery such as presses, especially of the extended nip type, calender rolls, and the like has a woven fiber base, such as scrim, and a urethane coating impregnating the base providing an integral layer of substantial thickness with pores forming a granite like finish providing excellent paper release properties. The surface finish of the belt can be modified with subsequent grinding and coating treatments and can be grooved if desired. The belt is formed by looping an endless scrim blanket around driving rollers providing a travelling run which is sprayed with a two component polyurethane coating which quickly gels to accommodate building up of a layer of the desired thickness by controlling the fluid flow and the speed of the travelling run.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.