With extrusion process objects of a fixed cross-sectional profile are created. A material is pushed through a die of the desired cross-section. Advantage of this process over other manufacturing processes is its ability to create very complex cross-sections. An other advantage is the possibility to work materials that are brittle, because the material only encounters compressive and shear stresses. The surface finish is also excellent.
UPM Formi for extrusion
Environmentally sound UPM Formi EXP grades are optimized for use in extrusion applications instead of polypropylene, filled polypropylene or several other plastics.