• Plastic pellets are usually stored in small bins (bags), large bins (packaging boxes), or silos. Storing large quantities of plastic A silo made of stainless steel or aluminum is used. Because the silo is large Therefore, silos are often built outside the production area. The silo is connected to the pellet conveying system in the production line. The conveying system transports the material from the silo to the dehumidification system. and forwarded to the injection molding machine.