Screw feeder is designed to meter bulk materials and typically locate the beginning of the process. Capacity or a feed rate can be accurately controlled by a screw feeder. Screw feeders are designed with a chip inlet, tapered compression zone and drain outlet. Screw feeder is extensively adopted in the food, plastics, minerals processing and agricultural industries as an efficient economical method for conveying solid granular materials. Variable speed drives improve accuracy metering and can provide a wide range of feed rates. Screw feeders are available in variety of sizes, length, configurations and material of construction. Screw feeders are integral to most bulk handling operations. The screw feeder design make sure that processing of bulk materials is done successfully.