| 摘要 |
A method of molding thermoplastic articles includes preheating a plastic tape to the temperature of elastic-plastic state, clamping between a working mold and a clamp and displacement downward by a pusher, which is heated to the temperature close to the temperature of heated plastic belt. In the case the working mold and clamp are cooled by water, compressed air remaining under the pressed plastic tape is removed through technological clearances and openings. Air displaced from working mold after passage through the technological clearances and openings is directed through an air duct and an open electromagnetic valve into a chamber of automatic position control of the plastic tape, where a flexible diaphragm is installed with possibility of displacement. In the case the air pressure is maintained constant. |
