https://www.avient.com/sites/default/files/2020-10/2020-gravi-tech-processing-guide.pdf
Startup & Shutdown Recommendations
Purge Compound HDPE or HIPS
Recycling
Recycling Gravi-Tech up to 25% is permissible.
PC Compounds: 0.001"–0.002" depth and 0.250" width
PC/PSU Compounds: 0.002"–0.003" depth and 0.250" width
PES Compounds: 0.003"–0.004” depth and 0.250" width
PEI Compounds: 0.001"–0.003” depth and 0.250" width
PP Compounds: 0.001"–0.002” depth and 0.250" width
ABS Compounds: 0.0015"–0.0025” depth and 0.250" width
PEEK Compounds: 0.002"–0.004” depth and 0.250" width
Nylon Compounds: 0.002" min. depth and 0.250" width
Increase vent depth to 1.0mm (0.040") at 4.0mm (0.250") away
from the cavity and vent to atmosphere.
