Common resins used to make plastic bags are:
2011-12-17 Read: 166
- Low density polythene (LDPE): Ethylene polymer with densities ranging from about 0.916 to 0.925 grams per cubic centimeter
- High density polythene (HDPE): Ethylene polymer with densities ranging from 0.941 to 0.965 grams per cubic centimeter
- Liner low density polythene (LLDPE): Ethylene polymer with densities ranging from 0.900 to 0.939 grams per cubic centimeter
- Medium density polyethylene (MDPE): Ethylene polymer with densities ranging from 0.926 to 0.940 grams per cubic centimeter
- Polypropylene (PP): A thermoplastic resin made by the polymerization of high-purity propylene gas in the presence of catalyst at relatively low pressures and temperatures. It is used to make film, fibers, rope and moulded articles
- Ethylene Vinyl Acetate (EVA): EVA compounded with LDPE is widely used to prevent plastic film/bags from cracking down to -30 degrees centigrade
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Polyvinyl chloride (PVC): Thermoplastic resin produced by the polymerization of the gas vinyl chloride [CH2CHCl]. Used in soft, flexible films for food packing. Also used in rigid products such as pipes or window profile.
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