The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 21, 2012
Filed:
Jul. 31, 2003
Heinz-michael Zaoralek, Koenigsbronn, DE;
Heinz-Michael Zaoralek, Koenigsbronn, DE;
SHW Casting Technologies GmbH, Aalen, DE;
Abstract
A roller for thermal pressure treatment of web-type media such as paper or non-wovens, provided with an inner heating system and comprising a base body made of hardened and tempered wrought steel or alloyed cast iron, an intermediate layer applied to the surface thereof and a hard wearing layer applied thereon. Peripheral bores or canals extending parallel to the axis are arranged in the base body of the roller at a regular distance from the surface, being distributed in a regular manner on the circle formed about the roller axis. The materials used and the arrangement of the peripheral bores are such that the roller can be used in calanders in a method wherein the surface temperatures of the roller exceed 140° C., the heating capacity is more than 35 kW/m, operational speeds are more than 1200 m/min, line pressures are greater than 250 kN/m and the processed webs of material weigh more than 45 g/mand have a degree of moisture of over 5%.