THERMAL CRYSTALLIZATION SYSTEM OF SATURATED POLYESTER HOLLOW BODY AND ITS HEATING METHOD

摘要

A system which can crystallize a saturated polyester hollow body uniformly by heating it while kept spinning depending on temperature rise characteristics resulting from the shape, thickness and light absorption rate at the neck part, and which improves energy efficiency by condensing irradiation light at a part to be crystallized. In the thermal crystallization system (1) of a saturated polyester hollow body for crystallizing the mouth part (11) of a spinning perform (10) by irradiating the mouth part (11) with light from a heater unit (30) thereby heating the mouth part (11), the heater unit (30) comprises a halogen lamp (31), a reflector (32), and a position adjusting means (40) for irradiating a specified position of the mouth part (11) with irradiation light (9) at a specified intensity.