Heat-resistant, corrosion-resistant, non-stick... A comparison of four types of fluoropolymer explained with data. Yoshida SKT supports selection for all types.
The representative resins used for fluoropolymer coatings, PTFE, PFA, FEP, and ETFE, have different heat resistance and film-forming properties, making it important to select the right one for the intended application. ■PTFE: The highest continuous use temperature at 260°C, it is a representative fluoropolymer known for its excellent non-stick and low-friction properties. ■PFA: An improved resin of PTFE. In addition to the same heat resistance of 260°C, it provides a continuous film with fewer pinholes, making it the best performer for anti-corrosion coatings. It is also used for high-temperature release applications. ■FEP: Although its heat resistance is lower at 200°C compared to PTFE, it forms a smooth film with fewer pinholes through sintering. ■ETFE: A resin with a continuous use temperature of 150°C. It is also used for thick film linings such as roto-lining. Yoshida SKT Co., Ltd. has been engaged in fluoropolymer processing since 1963 and can accommodate coatings of PTFE, PFA, FEP, and ETFE. We will inquire about your application and usage environment to propose the optimal resin and processing method. You can also utilize our pre-evaluation with test pieces and numerical evaluation services for coating performance measurement.
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【Characteristic Comparison (General characteristics, not guaranteed values)】 ■Continuous use temperature: PTFE 260℃ / PFA 260℃ / FEP 200℃ / ETFE 150℃ ■Melting point: PTFE 327℃ / PFA 280-310℃ / FEP 245-280℃ / ETFE 215-270℃ ■Water contact angle: PTFE 114° / PFA 105-110° / FEP 115° / ETFE 96° ■Static friction coefficient: PTFE 0.02-0.04 / PFA 0.04-0.05 / FEP 0.05-0.06 / ETFE 0.07-0.08 【Guidelines for Reverse Selection Based on Applications】 ■Heat resistance, non-stick, low friction up to 260℃ → PTFE ■Corrosion resistance, chemical resistance (continuous coating with few pinholes) → PFA ■High-temperature release → PFA ■Smooth coating → FEP ■Thick lining for tanks and pipes → ETFE / PFA (rotolining: 2000-5000μm) *Actual selection may vary depending on the substrate, shape, and usage conditions. Yoshida SKT, which supports all types, will propose the optimal material.
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Applications/Examples of results
Food processing machinery (mixers, rollers, baking molds) / chemical plants (piping, tanks, valves, pumps) / semiconductor manufacturing equipment (plating jigs, soldering jigs) / industrial non-stick applications (stirrers, centrifuges, heat sealers, molding dies, rollers), etc.
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To maximize the performance of manufacturing equipment and machine parts, Yoshida SKT derives the "optimal solution" tailored to our customers from hundreds of surface treatment technologies. - Decreased productivity due to adhesive troubles - Instability in product quality due to friction - Early deterioration of equipment due to corrosion We respond to these challenges in the manufacturing field with our extensive track record and reliable technical expertise. In 1963, we began fluoropolymer processing. In 1968, we signed a licensing agreement with DuPont (now Chemours), supporting manufacturing innovations for over 2,000 customers across various industries, from automotive to medical and aerospace. Furthermore, in 2024, we are focusing on the development of next-generation products, such as PFAS-free coatings, contributing to the advancement of sustainable manufacturing. With a three-base system in Nagoya, Tokyo, and Yamaguchi, we flexibly respond to both mass production and custom orders. Our consistent quality management system ensures that we deliver reliable quality. For solving challenges in the manufacturing field, trust the surface treatment experts at Yoshida SKT.
