11. The sugar may also be made in an extrusion process . 12. The extrusion process is divided in two basic types : direct extrusion and indirect extrusion. 13. The extrusion process controls not only the thickness of the line but its test as well. 14. Plastic tubes are produced using the extrusion process . 15. Also, the extrusion process requires special equipment. 16. Extrusion processes are of two general types.17. In the hot extrusion process , rice flour and micronutrients are transformed into a product visually resembling natural rice. 18. He created and patented the extrusion process which involved taking the marshmallow ingredients, and running them through tubes. 19. Most dried pasta is commercially produced via an extrusion process although it can be produced in most homes. 20. Most extrusion processes for food processing maintain a moisture level below 40 %, that is low to intermediate moisture.