B - Operations – Transporting – 29 – C
Patent
B - Operations, Transporting
29
C
B29C 70/52 (2006.01) B29C 70/02 (2006.01) D21G 3/00 (2006.01) D21G 3/02 (2006.01)
Patent
CA 2270770
The invention concerns a caring doctor blade for a paperboard machine, which blade comprises layers of fibreglass and carbon fibre and a caring layer as a rigid laminated structure, which caring layer comprises carbon fibres and grinding particles in direct vicinity of the carbon fibres. The orientation of the fibreglass layers is parallel to the longitudinal axis of the blade, and at least in some of the layers that contain carbon fibre the orientation of the carbon fibres is substantially diverging from the direction of the longitudinal axis of the blade. The invention also concerns a method for manufacture of a doctor blade for a paperboard machine by means of a pultrusion method.
L'invention concerne un docteur d'entretien destiné à une machine à papier/carton, le docteur comprenant des couches de fibres de carbone et de fibres de verre et une couche d'entretien se présentant sous la forme d'une structure stratifiée rigide et comprenant des fibres de carbone et des particules abrasives directement contiguës aux fibres de carbone. L'orientation des couches de fibres de verre est parallèle à l'axe longitudinal du docteur, et au moins dans quelques couches contenant des fibres de carbone, l'orientation des fibres de carbone diverge sensiblement de la direction de l'axe longitudinal du docteur. L'invention concerne également un procédé de fabrication d'un docteur de machine à papier/carton par un procédé de pultrusion.
Rata Ilkka
Vestola Juhani
Metso Paper Inc.
Sim & Mcburney
Valmet Corporation
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