As plastic extruders, SCT-Straw wants to show a greater commitment with sustainability.
The dosage process distributes raw materials and additives in accurate quantities to get a good mixing with the correct requirements.
Polypropylene was discovered in 1954 by the Italian Giulio Natta, who progressed with Karl Ziegler works and achieve to get a regular structure. Commercialization begins for both in Europe and North America in 1957 with the objective to manufacture domestic equipment, the first company to produce it was the Italian chemical Montecatini.
We are going to talk today about types of cutting machines used in extrusion, not all methods have the same effective, each one has his specific behaviour depending raw material, hardness, thickness, the type of cutting we want or the production line speed.
There are mostly three types of cutting machines.
For the coloration of the thermoplastic materials we use masterbatch.