Patent ID: 9045642
Filing Date: 2015-06-02
Classification: B27N,C08J,C08L

Abstract:
1. A method for manufacturing a composite material comprising lignocellulosic fibers in a matrix in plastic material, comprising steps for: providing lignocellulosic fibers; providing the plastic material; and mixing the lignocellulosic fibers and the plastic material for obtaining the composite material, the method comprising, a step for heat treatment of the lignocellulosic fibers, wherein the lignocellulosic fibers are heated, and a cooling step, wherein the heated lignocellulosic fibers are then cooled actively after the step for heat treatment but before the mixing step, characterized in that, in the heat treatment step, the lignocellulosic fibers are heated to a temperature above 160° C., wherein the heat treatment step and the cooling step are performed in a continuous processing device comprising a first heating segment and a second cooling segment and a cooling device for actively cooling fibers after the second cooling segment, wherein the cooling device further comprises an enclosure and a conveying device for continuously conveying the fibers from an inlet to an outlet, and wherein the conveying device is a worm screw .