| 摘要 |
PROBLEM TO BE SOLVED: To provide a method of manufacturing a tube by which a low cost, thin, large diameter tube having high dimensional accuracy is manufactured, the tube manufactured by the manufacturing method and a multilayer structural tube.SOLUTION: A method of manufacturing a tube has an extrusion molding step of simultaneously extrusion-molding a tube intermediate body 300 constituted of a hollow or rod like inner resin layer 100 comprising a thermoplastic resin and an outer resin layer 200 arranged on the outer circumference of the inner resin layer 100 and comprising a thermoplastic resin free from being in close contact with the inner layer resin layer 100 and a pultrusion step of cutting the tube intermediate body 300 formed by the extrusion molding step in the extrusion molding direction, pulling out the inner resin layer 100 from the cut tube intermediate body 300 to separate outer layer resin layer 200 to form the tube 200A. |
