吉田ＳＫＴ List of Products and Services

Typical corrosion-resistant materials include rubber, glass, and graphite products, but each has its drawbacks. ■ Disadvantages and Concerns - Rubber → Weak against heat and solvent-based substances - Glass lining → Weak against alkaline chemicals, thermal shock, and mechanical shock - Graphite products → Excellent acid resistance but weak against strong oxidizing acids (such as fuming sulfuric acid) ■ Materials that Address Disadvantages and Concerns From the above perspective, perfluoro-based fluoropolymers have few drawbacks, and in terms of chemical resistance, fluoropolymer coatings and linings can be used in a versatile manner. Applications such as tanks, piping, valves, and pumps ■ Selected Surface Treatments - Teflon(TM) Coating - Fluoropolymer Coating - SafeFlon(R) - SafeFlon(R) AP+ - MY Lining(R) Applications such as reaction vessels and acid storage tanks ■ Selected Surface Treatments - MY Lining(R) Applications such as dryers and centrifuges ■ Selected Surface Treatments - SafeFlon(R) - SafeFlon(R) AP+ *You can download the PDF introducing the surface treatment products.

The "Teflon coating," which excels in non-stick properties, water repellency, and slip characteristics, and also has high heat resistance, is active in various fields of industry. Yoshida SKT signed a licensing agreement with DuPont in the United States in 1968. As a Licensed Industrial Applicator of Teflon coating, we have pursued processing technology. Teflon coating excels in non-stick properties, low friction (slip), water repellency, oil repellency, chemical resistance, heat resistance, and cold resistance, as well as electrical properties. It is required in various industrial fields such as automotive, semiconductors, chemical industry, medical, pharmaceuticals, food industry, and aerospace. At Yoshida SKT, we provide coatings that maximize the properties of Teflon resin tailored to our customers' objectives, suitable for their purposes, usage environments, and applications. *For more details, please refer to the PDF materials or feel free to contact us.

"MY Lining®" is a corrosion-resistant lining that significantly improves permeation resistance compared to standard PFA. - It offers a lifespan that is expected to be several dozen times longer than conventional products (compared to our coatings). - It is suitable for environments that could not be used before or places where the previous lifespan was unsatisfactory. - Lining can be applied to complex shapes such as eye plates and stirrers. 【Features】 ■ Dramatic improvement in permeation resistance performance (compared to our products) ■ Thick film processing is possible (MAX 2000μm) ■ Strong adhesion (vacuum resistance) ■ Seamless integrated processing ■ Lining can be applied to complex shapes such as eye plates and stirrers *For more details, please refer to the PDF document or feel free to contact us.

"Safron(R)" is an antistatic fluororesin coating that enables static electricity elimination by allowing charges generated on the coated surface to flow to the base metal or ground. It reduces static electricity problems caused by fluororesin coatings and provides functions such as "preventing adhesion," "enhancing slipperiness," and "improving corrosion resistance." Additionally, it improves production efficiency in various settings by preventing product issues caused by material sticking and making the cleaning of adhered substances easier. [Features] - Antistatic properties of the coated surface - Excellent release from adhesives, preventing or making adhesion difficult - Improved lubricity due to the low friction coefficient of the fluororesin coating - Prevents poor flow and clogging in transport guides, chutes, pipes, etc. by processing them - Protects tanks and stirring blades that come into contact with chemicals, enhancing safety and durability *For more details, please refer to the PDF document or feel free to contact us.

■What is SafeLon(R) AP+? SafeLon(R) AP+ is an anti-static fluoropolymer coating that further enhances the functions of Yoshida SKT's anti-static fluoropolymer coating, "SafeLon(R)." ■Features of SafeLon AP+ By enhancing three functions: "release performance," "anti-static performance," and "blister resistance," improvements in corrosion resistance, non-stick properties, and coating lifespan can be expected. 【Upgraded Functions from SafeLon】 - Release Performance Improved release performance by creating a smoother surface. - Anti-Static Performance Achieves a leakage resistance value of 10^4-5Ω by directly dissipating generated charges to the substrate (metal). - Blister Resistance Reduces blister formation to about half that of conventional fluoropolymer coatings. *For more details, please refer to the PDF document or feel free to contact us.

■ Thick Film Fluororesin Coating (Film Thickness 300–2000 μm) 【Excellent Chemical Resistance of Fluororesin】 Fluororesin is chemically stable, so it is not affected by most acids, alkalis, and other chemical substances, nor do its molecules dissolve and leak out. 【Fluororesin Thick Film Pinhole-Free Coating】 By applying a pinhole-free thick film coating to can bodies and substrates where lining and molding are not possible, it is possible to protect against corrosive liquids and gases such as acids and alkalis, as well as to prevent the leaching of metal ions. *For more detailed information, please see the link below.

"Serashield" is a corrosion-resistant coating material that reduces the frequency of updates for industrial equipment such as tanks by preventing corrosion and permeation. It is a hardened type of paint with excellent corrosion prevention effects, forming a high cross-link density coating. Additionally, it can be applied to a wide range of substrates including metal, plastic, wood, concrete, and ceramics, demonstrating excellent adhesion. There are two types available: the room temperature curing type "Serashield CST-1108" and the heat curing type "Serashield CST-1508." 【Features】 ■ Reliable corrosion resistance ■ All-around chemical resistance (heat curing type) ■ Suitable for room temperature processing (room temperature curing type) ■ Excellent hardness ■ Electrical insulation properties ■ Advantageous for aftercare *For more details, please refer to the PDF document or feel free to contact us.

By applying a unique fluororesin coating to glassware such as beakers and flasks, as well as scientific instruments, we prevent glass shattering in the event of falls or accidents, ensuring safety on-site. Additionally, the amount of hazardous chemicals or expensive pharmaceutical raw materials that may scatter is reduced, thereby minimizing the risk of serious accidents or losses. The transparency is higher than that of standard fluororesin coatings, so visibility and measurement of the contents remain unaffected! ■ Features - Excellent adhesion prevents glass scattering - Minimizes exposure and loss of contents - Allows for normal operations with overwhelming transparency ■ Main Applications - Medical institutions, welfare facilities, testing organizations, universities, research institutions, etc. *For more details, please refer to the PDF materials or feel free to contact us.

Roto-lining is a coating method that uniformly adheres fluororesin while rotating a hollow substrate in three dimensions. It can form a seamless coating on the inner surfaces of tubular components and devices, such as irregular pipes and strainers, as well as on the inner walls of small pumps and tanks. Since it allows for thick film processing, it achieves excellent durability. Additionally, the good adhesion of the coating helps to suppress the permeation of chemicals. *For more details, please contact us.

◆Features of Fluororesin Coating with Excellent Corrosion Resistance◆ ■Chemical Resistance of Fluororesin Fluororesin is chemically stable, so it is not affected by most acids, alkalis, or other chemical agents, and ions do not dissolve and leak out. ■Pinhole-Free Coating Technology By applying a fluororesin coating without electrical pinholes to substrates with shapes that cannot be lined with sheets or rotationally molded, we protect against highly corrosive liquids and gases such as acids and alkalis, and prevent the leaching of metal ions from the substrate. ■Prevention of Liquid Penetration and Excellent Blister Resistance Compared to standard fluororesin coatings, our MY lining significantly reduces blister formation and offers a lifespan over ten times longer, with a maximum film thickness of up to 2000μm possible due to our unique processing technology (depending on substrate conditions). With this technology, we provide fluororesin coatings with excellent corrosion resistance. *For more details, please refer to the catalog or contact us directly.

■What is Thick Film Fluororesin Coating Technology? Fluororesin, which has excellent chemical resistance, is chemically stable and is not affected by most acids, alkalis, or other chemical agents, nor do ions dissolve and leak out. On the other hand, if the coating film is thin or if there are pinholes, it can negatively impact the protection of the substrate from chemical solutions and the leaching of impurities. With thick film coating technology, it is now possible to achieve pinhole-free thick film processing on can bodies and substrates where lining and molding are not feasible, providing protection from corrosive liquids and gases such as acids and alkalis, as well as preventing the leaching of metal ions. *For more detailed information on thick film processing of fluororesin coatings and corrosion resistance, please refer to the link below.

In fluororesin sheet lining processing, there are two methods: "adhesive lining," where sheets made of PTFE or PFA are processed to allow one side to be bonded using a special method and then adhered to the substrate with adhesive, and "loose lining," a processing method like lining pipes where the liner is not bonded to the substrate. Sheet lining can process thicker linings compared to many other fluororesin lining methods. This results in excellent corrosion resistance among various fluororesin linings. On the other hand, the adhesion strength with the substrate depends on the adhesive's bonding power, so it generally does not accommodate use in negative pressure environments. Negative pressure applications can be addressed with other methods such as baked lining or roto-lining. *You can download a document summarizing the details of the lining. Please make use of it. *For more information, please click on "PDF Download" or feel free to contact us.

■What is Lining? Lining is a method of protecting a substrate with a relatively thick film to enhance corrosion resistance. The lining materials primarily used are "rubber," "resin," and "glass." In linings that require corrosion resistance, a coating without pinholes is crucial. ■What is Fluororesin Lining? Fluororesin lining is one type of "resin lining." Resin lining includes those utilizing "polyethylene" and "nylon" resins, as well as "FRP lining," which combines glass fibers and resin. Among these, "fluororesin" is a material that is less susceptible to chemicals in harsh environments. ■Types of Fluororesin Lining Types of fluororesin lining include PTFE lining, PFA lining, and ETFE lining. Each lining requires appropriate selection based on the usage environment, method, and application. ■Main Fluororesin Lining Methods There are three main methods: 1. "Sheet Lining" 2. "Baked Coating" 3. "Roto Lining" *When considering lining, please check the materials and contact us for inquiries.

PTFE lining is characterized by the use of pre-formed PTFE sheets and pipes, and it is also referred to as PTFE sheet lining. Since PTFE has non-stick properties, it cannot usually be adhered with adhesives. Lining sheets are used that have been processed to allow adhesion on one side during or after molding (adhesive lining). ■ Advantages of PTFE Lining By using molded sheets, it is possible to create thickness, making it suitable for use in more demanding environments. Additionally, it is characterized by excellent gas permeability. ■ Disadvantages of PTFE Lining PTFE lining is difficult with baked coatings, so the usable temperature depends on the heat resistance of the adhesive. Furthermore, its use in negative pressure environments is generally not recommended. Yoshida SKT offers lining sheet sales and lining construction services. *For more details on lining, please check the materials or feel free to contact us.

ETFE lining is a type of fluoropolymer lining that is primarily processed using techniques such as powder coating and rotational molding (rotolining). ■ Advantages of ETFE Lining ETFE has a low melting point and excellent processability, allowing for thick film processing on various shapes of substrates. ■ Disadvantages of ETFE Lining On the other hand, because its molecular structure contains hydrogen (H), it has inferior heat resistance and chemical resistance compared to PTFE. The choice of materials and methods for lining needs to be tailored to the application, environment, and substrate shape. Yoshida SKT offers powder coating and rotational molding (rotolining) for ETFE lining. *Please feel free to contact us when considering lining options.

【Fluororesin Sheet Lining Processing】 Fluororesin sheet lining involves adhering a fluororesin sheet to a substrate using adhesives, and welding the seams with fluororesin to cover the substrate. (Adhesive lining) ■ Features of Fluororesin Sheet Lining Fluororesin is one of the resin materials that excels in chemical resistance and heat resistance. Fluororesin sheet lining is characterized by its ability to achieve thick lining processing, making it highly resistant to corrosion among various fluororesin lining methods. On the other hand, since the process includes welding the seams of the sheets, there may be steps on the lining surface. ■ Overview of Processing Fluororesin sheets, pre-cut to match the shape of the substrate, are adhered to the substrate, and the seams are welded. ■ Processing Thickness 2 to 4 mm *We have prepared materials summarizing comparisons and details of fluororesin lining. Please feel free to utilize them.

【Fluororesin Sheet Lining Processing Procedure】 ■ Acceptance The base material (cylinder body) is checked against the order form, drawings, specifications, etc., to confirm whether it has a suitable shape for lining. ■ Sandblasting The lining surface is sandblasted to remove rust, dirt, etc., and is roughened to a texture suitable for lining. ■ Sheet Cutting The lining sheet material is cut based on the welding development drawing. ■ Attachment Adhesive is applied to the lining area of the base material (cylinder body) and the back side of the lining material, and they are adhered together. ■ Edge Preparation The welding joint areas, left and right, and depth are evenly prepared, and excess adhesive in the gaps is removed. ■ Welding Butt welding Tape welding ■ Process Inspection A pinhole test is conducted after butt welding. A pinhole test is conducted after tape welding. *You can download materials summarizing the details of the lining. Please make use of them.

【Fluororesin Lining Processing Steps】 1. Acceptance We will inspect the substrate. If there are any issues that may affect the thick film processing, we may request corrections. 2. Degreasing Treatment [Preheating] The substrate is heated in a furnace to thermally decompose oils and dirt at a temperature higher than the firing temperature. 3. Surface Preparation [Blasting] The processing surface is blasted to remove rust, dirt, etc., and to create a rough surface. 4. Primer Coating A primer is applied to enhance the adhesion between the substrate and the fluororesin. 5. Firing The primer is cured in the furnace. 6. Coating [Powder Coating] Fluororesin powder is applied using electrostatic or special coating equipment. 7. Firing The fluororesin is heated to melt the resin and form a coating. *The size of the substrate that can be processed is determined by the size of the furnace. 8. Repetition Steps (6) to (7) are repeated to increase the coating thickness until the desired functionality is achieved. 9. Inspection We will inspect whether the processing meets the specifications and agreements. *The process is almost the same as fluororesin coating. *Please download the document summarizing the details of the lining for your reference.

PFA lining offers a variety of construction methods compared to PTFE lining and is characterized by its ability to be processed into various substrate shapes. ■Advantages of PFA Lining PFA lining can be processed mainly through three methods: "sheet lining," "electrostatic coating (baked coating)," and "rotational molding (rotolining)." Therefore, it is possible to create linings that accommodate various substrate shapes. ■Disadvantages of PFA Lining In some usage conditions, the lifespan may be shorter compared to PTFE sheet lining. It is necessary to choose carefully, taking into account temperature conditions, pressure conditions, and the type and concentration of the contact chemicals. Please refer to the materials for the characteristics, advantages, and disadvantages of each processing method. *If you have any questions about fluoropolymer lining, please feel free to contact us.

Fluororesin baked lining is a lining technology that forms a film through the processes of painting and baking. Compared to other lining methods, it can flexibly adapt to various shapes and operating environments, making it suitable for diverse industrial fields. 【Advantages】 - Applicability to complex-shaped components - High resistance suitable for use in vacuum environments 【Disadvantages】 - Limited types of fluororesins available (such as PFA, FEP, ETFE, etc.) - Difficulties in thick film processing compared to fluororesin sheet lining You can gain a deeper understanding of the processing details and various advantages and disadvantages through the provided materials. If you have any questions or uncertainties regarding fluororesin lining, please feel free to contact us.

Lining technology is an essential means to protect metals from the corrosive elements of "water, oxygen, and electricity" and to enhance durability. Metals are very convenient because they are easy to process and can be selected for various applications, but they have a significant drawback of being susceptible to corrosion. To solve this problem, processing linings allows metal products to be used in various environments. In particular, highly corrosion-resistant fluororesin linings are gaining attention in the field of heavy corrosion prevention due to their excellent properties. This document provides a detailed explanation of the various types of linings, especially the effects of fluororesin linings. Please take this opportunity to download and check it out.

■What is Teflon Lining? Teflon is a trademark of Chemours, and generally refers to fluororesin lining. Fluororesin is particularly excellent in chemical stability among various lining materials. Therefore, it is widely used in fields such as chemicals, semiconductors, and pharmaceuticals, where heavy corrosion resistance and purity are required. ■One Type of Resin Lining Fluororesin lining is one type of "resin lining." Resin lining includes those using "polyethylene" and "nylon" resins, as well as "FRP lining," which combines glass fibers and resin. Among these, "fluororesin" is a material that is less susceptible to chemicals in harsh environments. ■Types of Fluororesin Lining Types of fluororesin lining include PTFE lining, PFA lining, and ETFE lining. Each lining requires appropriate selection based on the usage environment, construction method, and application. ■Main Fluororesin Lining Methods There are three main methods: - "Sheet Lining" - "Baked Coating" - "Roto Lining" *When considering lining, please check the materials and contact us.

Benefits of Fluororesin Lining for Stainless Steel Tanks ■ Chemical Resistance Fluororesin has strong resistance to chemicals such as acids and alkalis. It prevents corrosion and deterioration of the tank, allowing for safe use when handling chemicals and substances. ■ Non-Stick Properties Fluororesin has a property that makes it difficult for liquids like water and oil to adhere. This facilitates the cleaning and discharge of liquids within the tank. Additionally, the reduced contact area between the liquid and the tank can also help prevent corrosion and deterioration. ■ Durability Fluororesin has excellent heat resistance. The lining film is thick, providing the advantage of maintaining performance even after long-term use. 【Applications】 - Food Processing Safely store acidic and alkaline foods. - Chemical Industry Safely store highly corrosive chemicals. - Medical Field Hygienically store liquids such as blood and pharmaceuticals. In this way, fluororesin lining for stainless steel tanks demonstrates high effectiveness across various fields. *Please download the document summarizing the details of the lining for your reference.

Fluororesin lining is an important technology for protecting materials from damage caused by corrosion and chemicals. The main types of fluororesin lining include PTFE, PFA, and ETFE, each possessing specific properties suitable for particular applications and environments. Types of fluororesin lining: - PTFE lining: Excellent non-stick and heat resistance, with resistance to almost all chemicals. - PFA lining: Offers more options for processing methods compared to PTFE, accommodating various shapes of substrates. - ETFE lining: Combines strength and chemical resistance, with a wide range of substrate shapes that can be processed similarly to PFA. Fluororesin lining methods: - Sheet lining: A method of adhering fluororesin sheets to substrates, allowing for thicker linings. - Powder coating: A method of applying fluororesin as a powder coating and forming a film in a sintering furnace. - Rotolining: A method of applying lining material while rotating, forming a uniform film. It is suitable for use under harsh chemical conditions, such as in chemical plants and semiconductor manufacturing processes, and can protect materials over a long period. Please check the materials and contact us for further consideration.

■What is Fluororesin Lining? Fluororesin lining is one type of "resin lining." Resin lining includes those utilizing "polyethylene" and "nylon" resins, as well as "FRP lining," which combines glass fibers with resin. Among these, "fluororesin" is a material that is resistant to chemical corrosion in harsh environments. ■Types of Fluororesin Lining Types of fluororesin lining include PTFE lining, PFA lining, and ETFE lining. Each lining requires appropriate selection based on the usage environment, construction method, and application. ■Main Fluororesin Lining Methods There are three main methods: "sheet lining," "baked coating," and "rotolining." ■Various Lining Methods At Yoshida SKT, we can accommodate various processing methods according to the shape and thickness of the material, not only based on material differences but also using "sheet lining" with fluororesin sheets, "PFA lining" with baked coatings, and "rotolining" using rotational molding. *When considering lining, please check the materials and contact us for inquiries.

ETFE coating is a type of fluoropolymer coating that is primarily processed using techniques such as powder coating and rotational molding. ■ What is ETFE Coating? ETFE is a type of fluoropolymer, specifically a copolymer of tetrafluoroethylene and ethylene. It is mainly processed using powder coating technology and is considered a relatively thick coating among fluoropolymer coatings. Therefore, it is commonly referred to as ETFE lining. ■ Advantages of ETFE Coating ETFE has a low melting point and excellent processability, allowing for thick coatings on various substrate shapes. ■ Disadvantages of ETFE Coating On the other hand, because its molecular structure contains hydrogen (H), its heat resistance and chemical resistance are inferior compared to PTFE. ETFE coating requires the selection of materials and methods according to the application, environment, and substrate shape. Yoshida SKT offers ETFE coating services through powder coating and rotational molding (rotolining). *If you are considering ETFE coating, please feel free to contact us. For those considering various linings, please also check the "Basic Knowledge of Lining" PDF.