Method for modernizing a multiroll calender, in particular for modernizing a supercalender and a modernized multiroll calender, in particular a modernized supercalender
US9133580B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 21, 2013 |
| Grant date | Sep 15, 2015 |
| Priority date | — |
| Expiry date | Oct 20, 2033 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/4973
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A method for modernizing a existing multiroll calender, having at least one stack of calender rolls (10, 20), each stack comprising at least two calender rolls (11, 12, 13, 14, 21, 22, 23, 24) and at least one of the calender rolls being a smooth-surfaced press-roll (12, 22). In an existing multiroll calender the smooth-surfaced press roll (12, 22) is replaced by an ultra thermo roll that is a thermo roll with a diameter substantially the same or less than the thermo roll to be replaced, so that the surface temperature of the ultra thermo roll when heated is at least 110° C., and has at least 10° C. higher than the surface temperature of the existing roll with the same heating fluid temperature and having flow channels arranged in such a way that vibration excitation is minimized, by being arranged to form a spiral geometry in the mantle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.