Heat forming thermoplastics - by heating sheet by direct contact with heating plate that moves, carrying sheet, to mould where forming occurs after sepn. from heater

摘要

Thermoplastic material is thermoformed by (1) heating the sheet to soften it by direct contact with a heating plate, and (2) using a transporter to carry the heating plate with the sheet attached, normally by suction, over the mould where it is formed after sepn. from the heating plate. USE/ADVANTAGE - Thermoforming platics is partic. for automobile accessories, giving better quality heating than by radiation and prevents uneven cooling by draughts.