No news published
Apr 4, 2007
As a rule, laser penetration welding of thermoplastics requires one joining partner transparent for laser beams plus a partner absorbing laser radiation. Two transparent joining partners require a laser-absorbing intermediate layer. The intermediate layer can be applied in form of a colour coat with a prescribed content of soot. This allows the joining of the two partners under pressure – the soot particles absorb the laser energy, transforming it into heat. The heat in turns melts the colour-coated plastic as well as the uncoated component. The applied mechanical pressure in conjunction with the heat welds the two parts together.
Further welds using this method have shown that colour has lonely to be applied to the areas to be joined in order to achieve a proper weld.
