Method and apparatus for continuously draw-molding fiber reinforced plastic rod formed with spiral groove

摘要

PCT No. PCT/JP94/02036 Sec. 371 Date May 28, 1996 Sec. 102(e) Date May 28, 1996 PCT Filed Dec. 2, 1994 PCT Pub. No. WO95/15255 PCT Pub. Date Jun. 8, 1995A method of continuously draw-molding a fiber reinforced plastic rod formed with a spiral groove includes the steps of arranging in parallel a plurality of reinforcing fibers under tension, impregnating an unhardened thermosetting resin in the reinforcing fibers with tension being applied to the reinforcing fibers, winding a tape having a resin impregnable property and an expandible and contractible property around a fiber bundle composed of the thermosetting resin impregnated reinforcing fibers in a spiral fashion with a winding angle being substantially equal to an angle of the spiral groove with respect to an axial direction of a rod to be molded, passing the fiber bundle with the wound tape in a heating mold provided with a hole having a cross section substantially equal to that of the rod to be molded to heat and harden the thermosetting resin, and taking up the tape thereafter.