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Plastic of the month: PTFE


PTFE (Polyt­et­raf­lu­oro­et­hylene) or more commonly known as Teflon, is a synthetic fluoropolymer of tetraf­lu­oro­et­hylene best known for its use in coating non-stick frying pans and other cookware, as it’s hydrophobic and possesses fairly high heat resistance.

With hygiene being at the forefront of everyone’s minds due to the Coronavirus pandemic, PTFE is an extremely hygienic material. As well as being chemically resistant, the famous non-stick nature of Teflon allows materials to pass through the assemblies without becoming ‘hung up’, reducing the risk of contamination.

The unusual structure of PTFE leads to a material which has an almost universal chemical inertness. This includes; complete insolubility in all known solvents below 300 degrees Celsius, excellent thermal stability, unsurpassed electrical properties, low dielectric loss, low dielectric constant and high dielectric strength. Furthermore, PTFE does not embrittle at very high or very low temperatures, making it highly useful for high or low temperature activities such as cooking.

Previously, the plastic engineers at Partwell worked with PTFE after a company approached them with a machine that needed new Teflon (PTFE) scraper blades that had been discontinued by the machines company. The specialist engineers reverse engineered the components so that replacement blades could be CNC machined. Teflon is the most appropriate material for high temperature food processing applications due to its ability to withstand high temperatures and unique, non-stick material with significant mechanical strength. In addition, PTFE is also very easily machined into bespoke plastic parts whilst withholding a very good tolerance.

Why not get in contact with a member of our team to get a quotation on our bespoke Teflon plastic parts or any other bespoke CNC engineered components. Call today on 01254 295707Contact the team if you have any queries regarding Partwell and the Coronavirus.

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19th March 2020, 14:40