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PVD and plasma spraying technics are nowadays widely used. In the last few decades, there has been an intense development in non-equilibrium (“cold”) plasma surface processing systems at atmospheric pressure. This new trend is stimulated mainly to decrease equipment costs by avoiding expensive pumping systems of conventional low-pressure plasma dev...
Multilayer curtain coating has been used for more than 50 years in photographic industry for large volume production. The leading experts in multilayer curtain coating technology of the photographic industry have looked in detail at a high number of operative limits, in order to assure the efficiency, productivity and quality of their production. T...
The chemical modifications occurring during rolling in steel contacts lubricated by magnetron sputtered MoS2 thin films were investigated using Auger Electron Spectroscopy (AES). Rolling conditions were established between an uncoated and three MoS2 coated AISI440C balls using a four ball tribometer operating at a contact pressure of 3.6 GPa. The d...
To enable printing onto large & heavy objects it is necessary to combine robot-moved printhead & static object. While this approach opens many new application areas the accelerated motion of the printhead results in key tech challenges to achieve high printing speed, precision, and reliability.
For the considered application, PCBs come in with variable shapes and have electronic components with a height of up to 15mm assembled. To be economically competitive, the coating process developed within this project should take less than 5s/PCB and be operated 24/7. The coating material used was a paraffin-based wax with a melting temperature of 105°C. The main steps of the project were the wax characterization, the selection of an inkjet print head and the coating process development.