Patent ID: 8991146
Filing Date: 2015-03-31
Classification: B29B,D02G

Abstract:
1. A method of manufacturing a fiber-reinforced strand by causing a reinforced fiber bundle to pass through a resin bath means storing a molten thermoplastic resin and twisting the reinforced fiber bundle after resin impregnation about a bundle center by a twisting means provided downstream of the resin bath means, wherein the resin bath means includes an impregnation region where the reinforced fiber bundle is impregnated with the thermoplastic resin and a twisting region where the reinforced fiber bundle after the resin impregnation can be twisted by the twisting means, and the fiber-reinforced strand is produced by twisting the reinforced fiber bundle by the twisting means in such a manner that a twist imparted to the reinforced fiber bundle in the twisting region satisfies Equation (1): where dtex: decitex of reinforced fibers L: length of the twisting region of the resin bath means (mm) P: twist pitch imparted to the reinforced fiber bundle (mm).