| 摘要 |
<p>PURPOSE:To contrive to smooth the inner surface of thermoplastic resin inner layer so as to obtain fiber reinforced thermoplastic resin composite tube excellent in inner surface dimensional accuracy by a method wherein fiber-resin composite tape, at both the widthwise ends of which thin parts are provided, is wound round tubular body in such a manner as the thin-walled parts are overlapped one another. CONSTITUTION:Polyvinyl chloride having the degree of polymerization of 800 and the average particle diameter of 100mum is extruded from the tip outer peripheral part of a core mold 13 in parallel to the formation of tubular body so as to be laminated to the inner surface of the tubular body in order to produce two-layered tube having the outer diameter of 55mm, the inner diameter of 50mm and the wall thickness of 2.5mm. Round the outer surface of the two-layered tube, fiber-resin composite tape T2 in such a manner as the thin-walled parts formed at both the widthwise ends of the tape are overlapped one another. By blowing hot air having the temperature of 300 deg.C against the outer surface of the wound layer with a hot air generator 18, the fiber-resin composite tape wound layer A2 is welded with fiber-resin composite tape longitudinally joined layer A1 into an integral body and, after being cooled with a cooling device 19, taken up to a take-up machine 20.</p> |
