| 摘要 |
PURPOSE:To form a stiffening ring having an arbitrary shape without getting out of a shape without using a mold by forming the stiffening ring while a yarn is wound around a focussed continuous long fiber at certain spaces. CONSTITUTION:A plurality of continuous long fibers 1, 1 led out of a glass roving, etc., are focussed in broad width, and impregnated with a resin solution in a resin bus 2, a yarn 4 delivered from a yarn winder 3 is wound around a main body 5 suspended on a mandrel 7 while being loosely wound on a continuous long fiber bundle, and the impregnated resin is cured and a stiffening ring 6 is formed. |
