Method for welding boundary between two thermoplastic workpieces using laser beam, comprises heating one or both workpieces in area of weld to temperature below its melting point using supplementary heaters

摘要

Method for welding the boundary between two thermoplastic workpieces (22, 24) using a laser beam (16) comprises heating one or both workpieces in the area of the weld to a temperature below its melting point using supplementary heaters (30, 32). An Independent claim is included for apparatus for welding the boundary between two thermoplastic workpieces comprising a laser (36), a scanner (34) for moving the laser beam (16) along and an IR heater (32) and hot air heater (30) as supplementary heaters.