Process where feed is ground heat and force through a head to from a long ribbon which is then chopped into desired particle size is used commonly in pet and human food used with soybean products because heat is enough to destroy antinutrition factors in raw soybean soybean contain several different compounds that inhibit amino acid utilization decrease protein digestibility or are goitrogenic factors but all can be destroyed by heat so soybean are always heat-processed before being fed to livestock