Before revision: The most notorious factories were located in England and Italy, given the fact that these two countries where the most advanced in machine tooling and extrusion, then with the passing of time this technology found its way into other parts of the world, and today it is very easy to find who manufactures this type of base product anywhere in the world Stretching and Molecular Orientation Once the semi-finished extruded product is ready (in this phase it is when colors and UV stabilizers are added to the PP mix), the product is passed thru a stretching section, this is where the strength and other mechanical properties are given as the polymer molecules are aligned.
After revision: The most notorious factories were located in England and Italy, given the fact that these two countries where the most advanced in machine tooling and extrusion, then with the passing of time this technology found its way into other parts of the world, and today it is very easy to find who manufactures this type of base product anywhere in the world Stretching and Molecular Orientation Once the semi-finished extruded product is ready (in this phase it is when colors and UV stabilizffffers are added to the PP mix), the product is passed thru a stretching section, this is where the strength and other mechanical properties are given as the polymer molecules are aligned.