Calendar for producing a sheet having wax-containing dispersion thereon
US5637147A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 18, 1995 |
| Grant date | Jun 10, 1997 |
| Priority date | — |
| Expiry date | Dec 18, 2015 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21H25/14
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A calender for applying a dispersion of solid resins, wax dispersions and surface materials on sections or particularly sheets, with a heatable calender roller, a counterpressure roller disposed at the inlet of the section or sheet and a take-off roller, which is preferably constructed as a suction roller and offset in the direction of rotation of the calender roller with respect to the counterpressure roller, as well as, optionally, an air knife disposed in the outlet gap, one or several counterpressure rollers being provided and the diameters of the calender roller and/or of the counterpressure rollers, as well as their mutual contacting pressure, being selected so that the width of the pressure strip of the mutual contact, when a counterpressure roller is provided, is between 20 mm and 45 mm and preferably about 35 mm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.