The laser beam penetrates the material to be fixed and hits the absorbing surface to be joined. Here, the beam transforms the existing energy into heat emmission and results in a plastifying process. The local increase of volume produced brings up a laminar contact to the joining partner. The occurring heat transmission leads to a plastifying process of the second partner, too. Hence both surfaces are fastened by the preceding plastification and a secure bonding is the ultimate outcome.

Materials:

All thermoplastics that are transparent to laser beams. The lower the glass fibre content, the lower the reflection and hence the better the heat input.