What is PP (polypropylene) filament?
PP stands for polypropylene and is an almost unbreakable plastic. The material is reasonably stiff, light and has a high temperature resistance. The disadvantage of this material is that the structure ensures that the printed parts quickly warp after cooling, making it a challenge to print PP models well.
In contrast to ABS and PLA, which are amorphous plastics, polypropylene is a semi-crystalline plastic. This means that the structure of the material is different and therefore it cools and solidifies differently. This means that warping is lurking.
Polypropylene is a light and flexible material that is often used for packaging. The material is not susceptible to fatigue, but it is not very strong. It is suitable for caps with a plastic hinge for example, which often opens and closes.
Tip: PP is very difficult to print without any shrinkage and is therefore mainly reserved for the advanced 3D printer.