Patent ID: 7540934

Claim:
A method of irradiation welding of two thermoplastic component parts by production of a weld seam in an area of joining between absorptive and transmissive component parts by means of an energy beam that passes through the transmissive component part and is absorbed by the absorbtive component part, wherein the energy beam acts on the absorptive component part in several cycles such that a local temperature maximum (T max ), which circulates together with the energy beam and increases from cycle to cycle, and correspondingly circulating, locally increased clamping pressures are generated along the area of joining; wherein the transmissive component part is continuously heated in the area of joining by the absorptive component part, corresponding to the circulating temperature maximum (T max ); wherein a welding process then takes place by plasticization of the two component parts in a circulating area of plasticization that is defined in the longitudinal direction of a weld seam, equally corresponding to the circulating temperature maximum (T max ); and wherein the two component parts are interlocked during the heating process by a clamping device that produces a minimum clamping power, and wherein a feed velocity of the energy beam ranges between approximately 200 mm/s and 1000 mm/s, shaker cycle time.