Styrene Acrylonitrile resin, or SAN, is a rigid, hard, transparent copolymer plastic made by combining Styrene (70-80-percent by weight) and Acrylonitrile with a rubber modifier. Although styrene is toxic, this combination is stable and is widely used in the food industry.
SAN is easy to process, does not crack or craze under stress, and it can be easily coloured in a wide range of shades with a good depth of colour. It has a brilliant surface and accepts print easily. It has good resistance to chemicals and greater thermal resistance than polystyrene. It also resists thermal shock so SAN can be used with boiling water, making it a good choice for beakers, cups, coffee filters, and the external casing of thermally insulated flasks or jugs.
Additionality, it is resistant to grease, fats and oils, as well as to other food stains, so it is an excellent choice for kitchen equipment such as mixing bowls, storage containers, and refrigerator fittings. Also, products made from SAN can be safely washed in a dishwasher.
One of the most common uses of SAN is in multi-trip tableware and cutlery for the catering industry. Due to its brilliant resistant surface, it is also ideal for bathroom fittings and cosmetic packaging. Due to its durability, other uses for SAN include the outer covers of calculators, printers, lamps, scales, and many other instruments and appliances for the home, office, and industry
Styrene Acrylonitrile can be easily formed through plastic injection moulding. Give us a call on 0121 544 5808 and one of our experienced team will be able to advise you if SAN is the best choice for your injection moulding project or if one of the other materials, we work with would be better suited to your needs.
With over 20 years of experience, you can be sure that at Stephens plastic injection moulding we have all the answers to ensure the success of your next project.