Polyethylene (PE) foam is derived from polymerization of ethylene. PE is a class of thermoplastics, which is produced by polymerization of ethylene. In the foam form, PE is widely used in packaging, building and construction, automotive, footwear and other applications. PE foams have high buoyancy, which makes them popular for marine uses. PE foams are inert to water, solvents, and grease at typical temperatures. They are ozone friendly, chloro-fluoro-carbon free, odorless, recyclable, and lightweight.