Patent ID: 6123882
Filing Date: 2000-09-26
Classification: B29C,B29K,Y10T

Abstract:
A method of wet manufacturing a unidirectional fiber reinforced thermoplastic resin sheet by controlling the following to make planar orientation index Jm of the reinforcing fibers in said web more than 0.35, wherein a dispersion containing reinforcing fibers and a thermoplastic resin is supplied from an inlet onto an endless mesh belt moving in a line direction, and wherein a web having a shape of a sheet is continuously formed while subjecting said dispersion to suction and filtration, wherein the method further comprises:(a) about 50% or less by volume of said dispersion supplied onto said mesh belt being subjected to suction and filtration at an upstream portion, which is about 50% of a suction filtration region in the line direction, and the remainder of said dispersion being subjected to suction and filtration at a downstream portion, which is about 50% of said suction filtration region in the line direction; and(b) a ratio of the line direction component of the discharge speed of said dispersion from said inlet to the line direction component of the moving speed of said mesh belt being more than about 30.