Types of Antistatic Coatings and How to Choose Them | Safron
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Prevent static electricity problems by discharging to the substrate or ground. Explanation of leakage resistance value guidelines and grade selection.
Fluororesin coatings have excellent electrical insulation properties, which makes them prone to charging in environments where static electricity is generated, potentially leading to issues such as dust adhesion, material sticking, and damage to electronic components. Yoshida SKT Co., Ltd.'s "Safron" is a fluororesin-based surface treatment that enables static electricity prevention by allowing the charges generated on the coating surface to flow to the substrate metal or ground. It maintains the characteristics of fluororesin, such as non-stickiness, low friction, chemical resistance, and water repellency, while reducing problems caused by adhesion and clogging due to static electricity. Depending on the application, the lineup includes "Safron AP+" with enhanced release properties and corrosion resistance for thick film applications, "AS+" for anti-fouling properties, "LF+" for low friction and low-temperature processing on resin substrates, and "CC+" which maintains transparency. A urethane-based anti-static grade is also available, and these products are widely adopted in various fields from semiconductors to the chemical industry and general manufacturing. Pre-evaluation using test pieces is also possible.
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【Guidelines for Electrical Resistance Values】 ■ Safron: Target leakage resistance value of 10^8Ω or lower (not a guaranteed value for all processed parts) ■ Safron AP+ (standard part numbers AP-734P [PFA type] / AP-735E [ETFE type], film thickness 300-500μm) 【Guidelines for Grade Selection】 ■ Emphasis on corrosion resistance (chemical tanks and piping) → AP+ (blister formation in chemical environments is about half that of standard fluoropolymer coatings) ■ Emphasis on anti-fouling and release properties → AS+ (enhanced wipe-off capability for dirt) ■ Low friction; substrates sensitive to heat such as resins → LF+ (low-temperature processing part numbers available for below 100°C) ■ Transparent parts → CC+ (maintains transparency while preventing static electricity) ■ Need for product protection and quietness → Urethane coating anti-static grade (CD9000NE) 【Examples of Adoption in the Semiconductor and Electronic Components Field】 Wafer and glass handling (Safron) / Chemical supply tanks (AP+) / Prevention of resin powder adhesion due to static electricity / Reduction of film entanglement and quality defects due to static electricity
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Measuring hopper / transport guide and chute / chemical tank, piping, stirring blades / wafer chuck / transport process for films and paper / equipment for handling powders, 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.