Patent · US Expired

Heatable roll for the treatment of webs of material as well as method for their operation

US5613307A · kind A · utility

2Cited by

2References

9Claims

0Family size

Assignee

Voith Sulzer Finishin GmbH · DE

Inventors

Hans-Rolf Conrad · Dormagen, DE
Dirk Cramer · Duisburg, DE

Key dates

Filing date	May 12, 1995
Grant date	Mar 25, 1997
Priority date	—
Expiry date	May 12, 2015

Classification

Technology area (CPC D)Textiles; Paper
CPC primaryD21G1/0253
WIPO fieldTextile and paper machines
WIPO sectorMechanical engineering

Abstract

A jacket with a thermally insulating layer partially surrounds, at a small spacing, a heatable roll which serves for the treatment of webs of material, in particular paper webs. Under production conditions the jacket reduces heat losses from the roll through convection and radiation to the environment. The jacket has a device which, with an interruption of production, ensures a forced convection at the heated roll for the cooling of the surface to a temperature level which is same or only insubstantially higher than in the production state. Several cooling nozzles are conceivable for the said apparatus which are secured to the jacket and direct a coolant onto the roll surface.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.