HEAT TREATMENT OF TUBE

摘要

PROBLEM TO BE SOLVED: To prevent the dimensional change of a tube in the diameter direction in a method for winding the tube after extrusion molding around a winding member to heat-treat the same. SOLUTION: A tube 2 comprising a thermoplastic elastomer obtained by extrusion molding is wound around the winding member 1 capable of linearly holding the tube 2 between a plurality of tube engaging parts 3 within 10 min after extrusion molding and allowed to stand at temp. lower than the glass transition temp. of the material constituting the tube 2 to be stabilized in shape before heat-treated.