Crystalline Polymers

We'll talk about Crystalline Polymers later in this chapter because they need something very specific.

For all other polymers, what we do suggest, is to get a good extruder with a venting, better with two, and feed it straight with the flakes you got after the centrifuge.

This what we do in all cases but one; dealing with film, doesn't matter the thickness, washing and drying is done with flakes of about 30-40 mm. in size and any force feeding (we know of) accepts only way smaller flakes so further cutting is needed.

Because any granulator will make friction by cutting, meaning developing heat, and then, by blowing, flakes lose some more humidity and by the time they get to the extruder, will be dry enough for pelletizing.

For all other situation, no hot air is needed because a good centrifuge MUST deliver a flake with less than 1% mixture and all extruders will be able to easily remove it by venting.

Crystalline Polymers, as we said, need a chapter by its own.