Title:
METHOD OF IMPARTING SUCTION ACTION TO FELT* METAL WIRE OR FIBER SLURRY LAYER IN PAPER MAKING MACHINE AND APPARATUS FOR OPPERATING SAID METHOD
Document Type and Number:
Japanese Patent JPS5352707
Kind Code:
A
Abstract:
In a paper-manufacturing machine a web is subjected to suction by placing a space between the web and a suction roll lapped thereby in communication with a region of substantially less than atmospheric pressure which is maintained at a part of the suction roll which is not lapped by the web. The structure includes a jacket which defines with the part of the suction roll which is not lapped by the web a hollow region with which a source of suction communicates. This hollow region of less than atmospheric pressure is situated at the exterior of the suction roll and bounded in part by an exterior surface of the suction roll, so that the hollow interior of the shell of the suction roll need not necessarily be utilized for providing the suction at the web.
Inventors:
MATSUCHI KANKAANPEE
Application Number:
JP10953677A
Publication Date:
May 13, 1978
Filing Date:
September 13, 1977
Export Citation:
Assignee:
VALMET OY
International Classes:
D21F1/00; D21F1/50; D21F3/04; D21F1/48; D21F3/10; D21F9/02; (IPC1-7): D21F1/48; D21F9/02