Chemical - PTFE Teflon Xylan Coating

There are many applications relating to food processing and handling, ranging from in-line hoppers for bread making equipment, through to confectionary related product turn-key plant. All of these areas demand high levels of product release and the application of a PTFE coating can provide the required levels of performance to enhance yields and product quality. With the move to healthier living, equipment used to produce vitamins and supplements show clear advantages when process equipment is coated with PTFE. Process equipment dealing with food related products, in particular moulds for both food consumables and packaging benefit from PTFE coatings.

Chemical resistant PTFE coatings operate in by far some of the harshest of performance conditions, many applications require resistance to strong acids, PFA coating is well suited for this application. PTFE coatings are capable of operating at extremes of temperatures without degradation or loss of performance, thus enabling equipment to operate at greater limits, enhancing product performance and value.

PFA is a perfluoroalkoxy copolymer resin available in a powder. PFA combines the processing ease of conventional thermoplastic resins with the excellent properties of Teflon® polytetrafluoroethylene (PTFE). Products manufactured from PFA can offer continuous service temperatures up to 260°C (500°F). What's more, PFA provides superior creep resistance at high temperatures, excellent low-temperature toughness, and exceptional flame resistance.

For a number of years fluoropolymers have played a significant role in the chemical and similar industries to protect plant and equipment against chemical attack by a broad range of aggressive media. This is because they offer substantially better chemical resistance and thermal stability than other plastics or elastomeric materials.

Following the development of PTFE, the introduction of melt-processable fluorinated ethylene-propylene (FEP) in 1960 opened up entirely new application areas. PFA, a perfluoro-alkoxy polymer which has been in successful use for 20 years as a coating material, is now a thermoplastic successor to PTFE, with equivalent thermal and chemical resistance and superior properties with respect to processability, translucency, permeation resistance and mechanical strength.

Equipment such as flow meters, sensors and thermo-wells all benefit from Teflon® and Xylan® coatings, added value is evident from the accuracy of measurements produced by the performance of the coating.

Within the chemical industry, coated fasteners benefit from the high build products that give added protection under severe conditions within the chemical industry. Processing chambers and valves also gain an advantage from the range of PTFE coatings available, particularly with the new generation of exhaust abatement systems being designed and manufactured for both environmental and safety requirements.

petrochemical and ptfePTFE coatings for process plant equipment provides a superior barrier for many product types and barrier coatings can operate at high or low temperatures and give a greater degree of product enhancement. PTFE coatings can be applied in varying thicknesses, dependant upon the process and materials that are being processed. PFA is an ideal candidate for the chemical process industry, giving high resistance to creep and retention of properties during service at 260°C (500°F) with useful properties at 95°C (-320°F), PFA is also FDA compliant.

Examples of Chemical Applications: