filament extrusion with highly loaded powder content

[Gambo]

If your problem is uneven distribution of the TiO2 you should try making and using a ball mill, essentially a strong barrel about 1/3 full of large 25 to 75mm diameter balls made of stone ceramic or other hard material. You put the material to be milled and mixed into the barrel with the balls then rotate the barrel on its side warning it takes a long time overnight at least and makes a lot of noise. With your materials a small amount of water might help. pre-grinding the plastic pellets would helpThis is the standard way of mixing fillers into resin to make paint