Patent ID: 9003619
Filing Date: 2015-04-14
Classification: B29B,C08J,D01D,D02J,D04H,Y10T

Abstract:
1. A method for spreading fiber bundles, comprising the steps of feeding a fiber bundle formed of a plurality of fibers in a fiber length direction and moving the fibers in a width direction while bending the fibers by letting a fluid pass through the fiber bundle in a movable region set so that the fibers can move in the width direction, thereby spreading the fiber bundle, wherein in the movable region, a set of regions S wherein the expansion region B wherein in the region sets Sj j=2, . . . , n), a spread width Wj−1 of the fiber-spreading region Aj−1, a spread width Wj of the fiber-spreading region Aj, and a length Lj of the fiber bundle in the feeding direction in the expansion region Bj are set to satisfy: wherein the fiber bundle is spread by being fed so as to sequentially pass through the region set S