Welding connector to wall of thermoplastic sheet vessel

摘要

The connector (16) is preheated, then brought into contact with the wall (18, 20). Preferred features: A contact heater (12, 14) carries out preheating. A non-contact heating method may be used, e.g. an infra red heater (24). Other possibilities are a heating gas, ultrasound and/or vibration. The same unit (12, 14) may be employed for both preheating and welding.