Direct Laser Interference Pattering of BSH mould
Our Partners have been busy, The University of Stuttgart IFSW have structured the surface of the injection mould (provided by our partner BSH), with a line like periodic structure by means of the Direct Laser Interference Patterning (DLIP) method.
The period of the structure is 855 nm. This process was done with a structuring rate of 416 mm2/s (considering only the laser on time) onto an area of about 145,600 mm2 (280 x 520 mm2), 1000 x 500 mm2 are possible with the current system. The mould has a weight of about 500 kg. The used laser source is the TresClean ThinDisk Multipass Amplifier (TDMPA) with 8 picoseconds pulse duration and an average power of up to 1 kW at 300kHz repetition rate developed and built by University of Stuttgart IFSW. This periodic structure will then be transferred to the inner surface of the plastic water tanks after the injection process.