Valmet Fibertech Ab

G&ouml;ran Lundgren

Leif H Andersson

Christer S&auml;fstr&ouml;m

Lena B&auml;ckman

Carl-Johan S&ouml;derberg

A method and a device for continuous forming of a mat of particle lignocellulosic material by means of a batching unit ( ) with a distribution chamber ( ) in connection with the manufacture of board. The material is deposited on a continuous forming web ( ), and the width of the mat is controlled by means of laterally movable partition walls ( ) in the distribution chamber ( ). The main part of the material is deposited on the forming web ( ) between the partition walls ( ), and the partial amount of the particle material dropping outside the partition walls ( ) is diverted by means ( ) and discharged separately in the distribution chamber ( ) and re-used in the mat forming, in that it is directly placed as a surface layer of the mat by distribution means ( ).

Method and device for forming a mat of particle board

Method is disclosed for treating wood chips including a heater for preheating the wood chips in the presence of steam, a beater to mechanically process the wood chips into wood fibers, a cyclone for separating the wood fibers from steam and volatile organic substances produced in the beater, a blower line for transporting the wood fibers, steam and volatile organic substances from the beater to the inlet of the cyclone, a drying conduit connected to the lower outlet of the cyclone for carrying wood fibers therefrom, a sluice valve associated with the lower outlet of the cyclone for controlling the removal of the wood fibers from the cyclone, and a processing conduit connected to the upper outlet of the cyclone for the steam and the volatile organic substances whereby the volatile organic substances separated in the cyclone can be separated and heat associated with the steam separated in the cyclone can be recovered.

Growing community of inventors

Alnö, Sweden

Göran Lundgren

Growing community of inventors

Alnö, Sweden

G&ouml;ran Lundgren

Göran Lundgren