Linear Low density polyethylene is a copolymer ethylene and an olefin such as 1-butene/1-hexene/4-methyl-1-pentene and 1-octene. The addition of the olefin in the polymerisation process adds strength and impact resistance to the end LLDPE product. This process is called free radical polymerisation. LLDPE resins occur in the form of odourless white granules. These can then be processed by extrusion, injection moulding and/or blow and cast film. In recent times due to easy processing and its favourable properties, much of the LDPE market has moved to LLDPE. However, LLDPE being inert to degradation, is considered an environmental hazard, even though it is often recycled into things such as lumber, floor tiles, trash bin and liners, landscaping ties, shipping envelopes, etc.