Title:
【発明の名称】内側加熱ロールを用いた紙の加工方法と装置
Document Type and Number:
Japanese Patent JPH06508894
Kind Code:
A
Abstract:
Disclosed is a new internally heated calendering roll capable of finishing paper satisfactorily at the temperatures, heat loads and pressures required for substrata thermal molding. The roll is internally heated and has a circumferential wall at least 0.1016m (4 inches) thick. It includes means to provide heat into the interior of the circumferential wall to be conducted through the wall to the outer surface for heating the paper web being calendered by the roll. The roll is constructed of a first material with a thin circumferential surface layer of a second, cermet or ceramic containing material. The surface layer material has a hardness of at least 530 Vickers and a thickness of between 7.6 x 10<-><5>m (.003 inch) and 7.6 x 10<-><4>m (.030 inches). It is capable of being polished to a roughness of less than 1.52 x 10<-><7>m Ra (6 micro inches Ra). The roll has uniformly spaced conduits for passing heated fluid located no more than 0.0508m (2 inches) from the outer edge of the conduits to the circumferential surface. The roll is capable of conducting at least 26796 w/m<2> (8,500 BTU/Sq.Ft./Hr). Heat through the roll without creating tensile hoop stress in excess of 1/2 of the yield strength of the first material
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Inventors:
Eris, Eric Earl.
Ferrari, Fred Jay.
Hale, Gregory Eich.
Harrington, Joyce M.
Juwet, Kenneth Bee.
Matter, John A.
Mosher, Abbott W.
Peterson, John O. H.
Quest, Douglas A.
Ferrari, Fred Jay.
Hale, Gregory Eich.
Harrington, Joyce M.
Juwet, Kenneth Bee.
Matter, John A.
Mosher, Abbott W.
Peterson, John O. H.
Quest, Douglas A.
Application Number:
JP51130193A
Publication Date:
October 06, 1994
Filing Date:
May 13, 1992
Export Citation:
Assignee:
S.D.Warren Company
International Classes:
D21F11/00; D21G1/02; D21G1/00; D21G3/02; F16C13/00; F28D11/02; F28F5/02; B29C43/46; D21G; (IPC1-7): D21G1/02; F16C13/00
Attorney, Agent or Firm:
Akira Asamura (3 outside)