| 摘要 |
PURPOSE:To manufacture a composite tube having a predetermined wall thickness efficiently and continuously, by shaping a clearance between a core mold and a forming roll by pushing a clearance holding roll to the core mold supported cantilever like and supplying a molding material into the clearance. CONSTITUTION:A core mold 7 is shaped by driving an endless belt 4 and winding a belt like object 3 around a core mandrel 2 supported centilever like, a mold release paper 11 is wound on the outer face of the core mold 7 and a clearance is shaped between the core mold 7 and a forming roll 8 by pushing a clearance holding roll 81 to the core mold 7. A molding material layer 9' having a predetermined wall thickness is shaped by supplying a molding material 9 into this clearance and, if necessary, an outer surface layer 12, is shaped by winding a glass roving 12 impregnated with the thermosetting resin of a polyester resin etc. on it. Then it is hardened by passing through a hardening oven 13 and a composite tube having the molding material layer of the predetermined wall thickness is obtained by releasing the core mold 7 and the mold release paper 11. |
