Application of PETG in the production process of Fillamentum October 16 2020
Fillamentum is a producer of the highest-quality filaments for hobby and industrial applications. It's only natural that we apply our own 3D printed components into production with the constant need of production processes improvement.
Before a material for filaments is processed, it needs to be perfectly dry. The material is dried in the hopper with a metal lid. Where during drying, the temperature can reach up to 70 °C. The original heavy metal lid was replaced with lighter PLA. But this material cannot withstand high temperatures, and the heat twisted the lid. The new version was printed in PETG that resists to high temperatures. At the same time, PETG has a perfect tightness due to minimal shrinkage and excellent dimensional stability.
Material collecting cups
Material is usually mixed with colored masterbatch. When mixing the material, one can manipulate with granulates that reach high temperatures, sometimes up to 75 °C. Mixing takes place in a particular industrial box, in which the hot material is poured. For this application, the PETG cups are used. PETG is used because of its long-term dimensional stability in high temperatures.
Boxes for moisture extraction
PETG material is, thanks to its dimensional stability, suitable also for applications where there is necessary the high tightness. Like the two-parts box whose purpose is to get rid of excess water on the surface of the extruded filament. Leaks were causing problems and the extruded filament was not dry enough. PETG is more resistant to moisture than CPE HG100 that was used for the box initially.
The system of printed nuts with threads has been used in our company for a long time. The original nuts were printed in PLA, but there was frequent cracking during handling, and the prints themselves did not have such precise threads - there was often friction in the thread and rapid wear of the nut. When switching to PETG, the nuts are significantly more resistant to mechanical damage (e.g., in the case of a fall), and the dimensional stability of the print eliminates problems with thread friction.
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