A continuous process in which animal feed components are cooked under pressure in a combination of frictional and steam heat in order to expand the resulting product and convert it into feed granulate This process is very common in production of pet food, fish feed, and cereals
A machine used to homogenize plastic materials, including colorants and additives, in a hot melt state The extruder performs this task through the use of heat and shear The screw compresses, melts and homogenizes the material The melt is forced through a die that gives the desired shape to the extrudate Screws may be specifically designed to handle the sensitivity and special processing requirements of certain thermoplastics Having the availability of venting and pulling vacuum from the barrel is also a requirement of hygroscopic materials