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:
Jun. 18, 1996
Filed:
May. 26, 1994
Rolf Lehmann, Rudolfstetten, CH;
Eugen Schnyder, Waltenschwil, CH;
Sulzer-Escher Wyss AG, Zurich, CH;
Abstract
A machine for the manufacture of chipboards or fibreboards comprises a pressure drum (1) and an endless steel belt (2) which wraps the pressure drum (1) around part of its periphery and forms there a compacting line (P) in which is for a sufficiently long time compacted and cured, by the action of pressure and temperature, material which is brought into it and which comprises lignocellulose or cellulose, is reduced to chips or fibres and is provided with an adhesive curable by heat. The compacting pressure and the heating are produced by extensive pressure shoes (10, 13, 14, 15) comprising a hydrostatic bearing pocket (11) supplied with hot pressurised oil. The pressure drum (1) is provided with a non-rotatable carrier (19) and a jacket (20) which is rotatable about it and is supported by supporting elements (21) supplied with hot pressurised oil, so that the jacket (20) is simultaneously heated and adjustable pressure forces without bearing loading are produced, while a uniform smooth gap is obtained.