Tomace srl, thanks to the deep knowledge of each coating
and depending on the operating conditions of the component to be coated, is able to locate in its range, the most suitable coating to meet the specific needs of the customer or, if necessary, to develop new customized formulations
The range of coatings consists mainly of fluoropolymers.
The main characteristics of fluoropolymers can be summarized as follows:
The categories of fluoropolymers are multiple:
PTFEIt is the founder of the family of fluoropolymers whose chemical formula is polytetrafluoroethylene which for brevity we refer to as PTFE. This fluoropolymer coating provides anti-friction surfaces which have very high "no stick" features and a low coefficient of friction. It can be continuously used at 300°C and, intermittently up to 315°C. Its main use is for industry, with a wide range of applications in the food industry, textile industry, rubber and plastics, automotive, paper and packaging machinery. In the chemical industry the PTFE is of poor application, as it is limited by the permeability of the film, either for the low thickness (35/40 microns), or for the sintered composition.
FEPIt is a fluoropolymer derived from the founder whose chemical formula is: copolymer of ethylene - propylene fluorinated; for brevity referred to as FEP. Unlike PTFE, FEP is a thermoplastic element and therefore it melts during cooking by providing a coating with a non-porous surface. FEP has high non-stick property, low friction coefficient and excellent chemical resistance. We can get multiple layers of coating by FEP and so we can reach up to 60 microns thick. The FEP coatings can be continuously used at a temperature of 200°C and, intermittently to 205°C. FEP is mainly used for industrial applications that require either a very high level of non-stick and an excellent resistance to chemical corrosion; therefore it finds application in the chemical industry and in the production of molded parts as its high non-stick property makes the detachment of the mold easier.
PFAEven this fluoropolymer is derived from the founder, its chemical formula is: tetrafluoroethylene for fluorinated, and has got a partially crystalline powder form. As the FEP is a thermoplastic element and therefore provides a coating with a non-porous surface with a low coefficient of friction and an excellent chemical resistance. It can work at a continuous temperature of 260°C. and intermittently till 310°C. With PFA It is possible to obtain coatings up to 150 microns thick and over with few layers. It is resistant to an even wider range of chemicals than the FEP. It can be said that its mechanical, electrical and thermal properties are similar to those of the PTFE resin.
SOL GELIt is the new non-stick ceramic coating and it is free of PTFE and PFOA (all ceramic coatings are free of these ingredients).
Being ceramic, it is built to withstand extreme temperatures (850°F/455°C).
It does not contain polluting solvents and works at lower temperatures, saving energy and money.