Verfahren und Vorrichtung zum Herstellen von Verbindungsnähten an thermoplastischen Folien

摘要

Welding thermoplastic film. It is carried out under a predetermined press. and the press tool is heated to a required temp. The time period of welding is also controlled. The heater element used in the process is heated to the required temp. before the welding process starts. The heated press tool is brought in contact with the plastic film. When the welding process starts an additional controlled current surge is sent through the heater. The tool remains in contact with the film when the welding process is complete and it is allowed to cool until the seam has achieved adequate strength.