| 摘要 |
PROBLEM TO BE SOLVED: To simply obtain a reinforced resin pipe excellent in outer diameter dimension accuracy and appearance shape by forming an uncured foamable thermosetting resin layer and passing the same through a mold having an inner diameter coinciding with the outer diameter of the reinforced resin pipe to heat the same. SOLUTION: At first, an uncured inner surface layer is formed on a core mold 15 by winding a glass roving impregnated with an unsaturated polyester resin around the core mold 15. Next, a resin mortar extruded from an extruder 16 in a strip-like shape is wound around the uncured inner surface layer to form an uncured core material layer and the glass roving impregnated with the unsaturated polyester resin is wound around the core material layer to form an uncured external layer. Further, a glass fiber nonwoven fabric impregnated with a urethane resin is wound therearound to form an uncured outermost layer to obtain a cylindrical preformed object 7. Thereafter, this preformed object 7 is continuously inserted into a curing furnace 2 having a cylindrical inner wall surface 2a and the uncured resins of the respective layers are cured or formed and cured to obtain a reinforced resin pipe 8. This diameter of the obtained reinforced resin pipe 8 is constant in the length direction of the pipe 8 and the surface of the pipe 8 is smooth. |
