Recycling by Extrusion - Amsterdam Pilot Booklet Ch.9

Now that we’ve discussed the basics of chemical recycling and mechanical recycling, we will now move on to extrusion. While chemical and mechanical recycling can be used for most textile materials, extrusion can only be applied to thermoplastic materials (e.g. polyester, polyamide, and polypropylene). In essence, extrusion is the process of forcing a pliable material through a hollow die with a fixed shape. This versatile technique is used for everything from the industrial manufacture of pipes to the creation of certain types of pasta. Because plastic is a malleable material when heated, extrusion is frequently used in the plastic industry