Heat-setting and simultaneous differential heating of stretched or molecularly oriented section of article or preform

Full Title

Plastic and nonmetallic article shaping or treating: processes > Direct application of fluid pressure differential to shape, reshape, i.e. distort, or sustain an article or preform and heat-setting, i.e. crystallizing of stretched or molecularly oriented portion thereof > Heat-setting and simultaneous differential heating of stretched or molecularly oriented section of article or preform