| 摘要 |
PROBLEM TO BE SOLVED: To provide a method enabling the control of orientation and the molding or high speed molding of a thick-walled oriented article and producing a resin oriented article reduced in the irregularity of quality. SOLUTION: In a continuous manufacturing method of a resin oriented article having a crosslinking process for kneading a raw material resin and a thermal crosslinking agent in an extruder to supply the obtained kneaded matter to a die 2 having a resin distributing zone 8, a thermal crosslinking zone 5, a stretching zone 7 and a cooling zone 6 from the extruder and thermally crosslinking the raw material resin in the kneaded matter extruded from the extruder in the thermal crosslinking zone 5, a stretching process for orienting the crosslinked resin obtained in the crosslinking process at least in a uniaxial orientation direction at temp. wherein the average temp. of the resin in its thickness direction is the softening temp. thereof or higher in the stretching zone 7 to shape the same into a molded article shape and a cooling process for cooling the shaped article in the stretching zone 7 to orientation relaxing temp. or lower, a constricted part 51 narrower than the resin flow passage in the resin distribution zone 8 or thermal crosslinking zone 5 is provided to the resin flow passage at least at one or more place.
|
