Traditional plastic bags used for packing of material, are usually made from polyethylene, which consists of long chains of ethylene monomers. The polyethylene used in most plastic bags is either low-density or, more often, high density. Color concentrates and other additives are often used to add tint to the plastic. Plastic bags are commonly manufactured by blown film extrusion.They are also available in Liner sizes and can also be extruded for the following applications: Biodegradable bags Anti-static bags ESD bags Garbage bags