FIBER-REINFORCED STRAND, METHOD OF MANUFACTURING A FIBER-REINFORCED STRAND

摘要

In a method of manufacturing a fiber-reinforced strand, the fiber-reinforced strand is so manufactured that the cross-section thereof becomes as circular as possible. The present invention concerns a method of causing a reinforced fiber bundle 3 to pass through a resin bath means 7 and, thereafter, twisting the reinforced fiber bundle 3. The resin bath means 7 includes an impregnation region 21 where the reinforced fiber bundle 3 is impregnated with a thermoplasti resin 5 and a twisting region 22 where the reinforced fiber bundle 3 after the resin impregnation can be twisted, and the reinforced fiber bundle 3 after the resin impregnation is twisted in such a manner that a twist pitch P imparted to the reinforced fiber bundle 3 after the resin impregnation within a length L in the twisting region 22 satisfies L/3 ‰¥ P ‰¥ 3.15/90×(dtex) 1/2 .