Laser welding of two or more transparent plastics components uses additional energy to convert a material between the components into another capable of absorbing more laser light

摘要

Additional energy is supplied to the joining area of the plastics(3,4) containing another material(5). The latter material contains particles(Aj) which are reversibly converted into one or more different materials(Bi) which absorb more laser light(1) than the original material. Independent claims are made for: a) a plastic(5) containing a material(Aj) which can be converted into one or more other materials(Bi) which absorb more laser light(1) in the range 800-2000nm; b) a welding aid material based on plastic and containing the convertible material(Aj).