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Introducing "Coating MAGAZINE," an information media on surface treatment and coating by surface treatment manufacturer Yoshida SKT. The magazine features numerous articles, including explanations of the properties of coating materials such as "Teflon fluororesin," general knowledge about surface treatments like plating, anodizing, and blackening, and explanations of "CFRP molding methods." We provide information that helps overcome the challenges faced by production equipment engineers. Please take a look. 【List of Articles (Excerpt)】 ■ Introduction to Teflon Coating for Beginners ■ What is the Suitable Substrate Design for Teflon Fluororesin Coating? ■ Types of PFA Lining ■ The Difference Between "Silicone" and "Silicon" ■ Types and Characteristics of Plating ■ Explanation of the Corrosion Resistance of Teflon Fluororesin Coating…etc ■ What is Fluororesin? – Summary of Types, Characteristics, and Applications – *For more details, please check the blog from the related link or feel free to contact us.

Introduction of Teflon coating to in-house equipment. When customers consult about Teflon coating, do you have any of the following concerns? - I don't really know where to start... - I'm not familiar with Teflon coating at all... For those who want to know more about the introduction of Teflon coating, we have prepared a "Guide to Introduction." The document is structured based on actual cases with three key checkpoints. To smoothly proceed with the introduction of coating, we clearly explain what you should check in advance and what you need to understand. [Document Overview] 1. The purpose of introducing coating 2. The materials to be coated 3. The usage environment and conditions for coating In fact, by introducing Teflon coating to production equipment, we have received feedback from customers such as: - "Adhesion of paint to jigs has decreased." - "Cleaning time has been reduced." - "Defective products have decreased, and productivity has improved." *For more details, please download the document or contact us.

Teflon fluoropolymer, known for its Teflon coating and fluorine coating. What kind of mechanism enables its characteristic of being difficult for things to stick? By understanding the non-stick mechanism of fluoropolymer, you will be able to use it appropriately. We present the following three-part document explaining non-stick properties. ■□■□■□■□■□■□■□■□■□■□■□■□■□■□■□■□ INDEX 1. The property of non-stickiness 2. Reasons why Teflon fluoropolymer excels in non-stickiness 2-1. High repellency 2-2. Low affinity 2-3. Chemically stable molecular structure 3. Examples of solutions utilizing non-stick properties - Case studies introduction - ■□■□■□■□■□■□■□■□■□■□■□■□■□■□■□■□ For more details, please download the document or check the link below. ▼ "Why doesn't it stick?!" Explanation of the non-stick properties of Teflon fluoropolymer ▼

■What is the "Chemical Resistance" of Fluororesin? "Chemical resistance" refers to durability against various chemicals. The types of chemicals include acids, alkalis, and organic solvents, and it is said to have "chemical resistance" when it does not dissolve (dissolve), swell (swell), or react to them. Fluororesin is not affected by almost all chemicals. You can check the detailed explanation in the PDF document. ■INDEX 1. What is chemical resistance? 2. Effects of chemicals on resin 3. Reasons why Teflon fluororesin excels in chemical resistance 4. What can be done using chemical resistance *For more details, please download the document or contact us.

Fluororesin is known for its excellent sliding properties. We will explain in detail the secret behind its ability to reduce friction resistance and improve sliding performance. ■Contents of the document 1. What is friction? 2. Measures to reduce friction 3. What is the low friction property of fluororesin (PTFE)? 4. Reasons why fluororesin (PTFE) excels in low friction properties 4-1. Smoothness of the PTFE molecular surface 4-2. Strength of interatomic bonds 4-3. Lamellar structure and the deposition of PTFE 5. What can be achieved by utilizing the low friction properties of fluororesin For more details, please refer to the PDF document or feel free to contact us.

■ What are the electrical properties of plastic materials? The electrical properties of plastics, including fluororesins, include "insulating properties," "dielectric properties," and "electrical resistance." Plastic materials generally exhibit the characteristic of not conducting electricity and retaining it. ■ What are the electrical properties of fluororesin (PTFE)? The electrical properties of plastics fundamentally derive from the polymer structure that composes them. Fluororesin (PTFE) is classified as a "non-polar polymer" due to the dense and symmetrical arrangement of atoms within its molecules, resulting in extremely low charge polarization, and exhibits the following electrical properties. ■ Insulating properties of fluororesin The volume resistivity and surface resistivity of fluororesin (PTFE) are very low, making it a material that is difficult to conduct electricity. The dielectric strength of fluororesin (PTFE, 3.2mm thick) is 19KV/mm. Among heat-resistant plastics known as super engineering plastics, it is equivalent to PEEK's 19KV/mm and superior to PPS's 15KV/mm. *For more details, please visit the official website via the link below or feel free to contact us.

■Reasons why fluoropolymer (PTFE) excels in heat resistance and cold resistance The molecular structure of PTFE is such that fluorine atoms (F) surround the C-C bonds without any gaps. The breaking of C-C bonds and C-F bonds at high temperatures is one aspect of "PTFE degradation." The C-C bonds are less likely to break because they are protected by the surrounding fluorine atoms (F). The bond strength of C-F bonds within PTFE molecules is significantly greater than that of other atomic bonds. Additionally, the high bond energy of C-F bonds is another reason for its excellent heat and cold resistance. ■Applications utilizing the heat and cold resistance of fluoropolymers In the case of fluoropolymer coatings, for example, baking molds utilize the non-stick properties provided by the coating to prevent baked goods from sticking to the mold. Furthermore, since it also possesses heat resistance, it can be safely used in applications where it is baked in an oven. Additionally, in household irons, the heat plate is coated with fluoropolymer to take advantage of its smoothness and heat-resistant properties. For more details, please click the link or 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.

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.

PTFE (polytetrafluoroethylene) and PFA (perfluoroalkoxy alkane) are types of fluoropolymer that both exhibit excellent chemical resistance. PTFE and PFA are resistant to chemical substances and are stable against acids, alkalis, organic solvents, and corrosive gases. They do not react with most substances and do not corrode or degrade. As a result, they are widely used as chemical containers, piping, gaskets, and sealing materials. PFA has a lower melt viscosity compared to PTFE, making it relatively easy to mold and process. Therefore, it expands the range of applications, especially for coatings that require chemical resistance or for thick film processing. *For more detailed information on chemical resistance, please download the materials or contact us.*

■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.

■Difference Between Lining and Coating Lining is a method that protects the substrate with a relatively thick film, enhancing its corrosion resistance. The differences from coating include the thickness of the film, the presence of pinholes, and the intended use. There are no clear standards, but thick films used for corrosion protection are referred to as lining. ■What is Fluororesin Coating? Coating is a surface treatment technology that can impart the properties of fluororesin to the surface of a substrate, primarily using a baking paint method. The film thickness is generally around several tens of micrometers. ■What is Fluororesin Lining? Fluororesin lining can be processed using the same method as coating. It is particularly used for corrosion protection applications that leverage chemical resistance, and the film thickness is several hundred micrometers, making it thicker than coating. Additionally, to enhance corrosion resistance, processing without pinholes is possible. *You can download a document summarizing information about lining. *For more details, please click on "PDF Download" or feel free to contact us.

High-heat-resistant plastics are materials that possess characteristics suitable for use in high-temperature environments. These plastics generally have high melting points, excellent heat resistance, and chemical stability. ■ Polyimide (PI) Polyimide has very high heat resistance and can be used in environments up to 300°C. It is utilized in electronics, aerospace, and the automotive industry, particularly in situations where durability under high-temperature conditions and harsh environments is required. ■ Polyetheretherketone (PEEK) With a high heat resistance of 260°C, PEEK also offers chemical resistance and wear resistance, making it suitable for use in aerospace, medical, and energy industries. ■ Polyphenylene sulfide (PPS) PPS has high heat resistance and chemical resistance at 220°C and is used in the automotive industry, electronics, and industrial machinery. Fiber-reinforced types of PPS also have high wear resistance, making them suitable for mechanical parts. ■ Polytetrafluoroethylene (PTFE) PTFE has high heat resistance of 260°C, exhibits self-lubricating and non-stick properties, and has high chemical resistance, making it chemically stable. It is used in semiconductors, chemicals, medical applications, aerospace, and the automotive industry.

There are various types of fluorine coatings, even if we refer to them simply as such. Typical examples include PTFE, FEP, PFA, and ETFE. In practice, the heat resistance varies depending on the application, but the continuous use temperatures for fluororesins are defined. ■ Continuous Use Temperatures - PTFE: 260℃ - FEP: 200℃ - PFA: 260℃ - ETFE: 150℃ For example, when used as an anti-corrosion coating, the practical heat resistance will be at a much lower temperature. Additionally, when considering applications that involve friction or physical contact, further considerations are necessary. Fluorine coatings (fluororesin coatings) possess various properties such as non-stickiness, low friction, chemical resistance, electrical characteristics, and weather resistance, and it is essential to consider the type and thickness according to each application. *For more details, please click on "PDF Download" or feel free to contact us.

Flame retardancy refers to the property of being difficult to ignite, primarily when plastics are directly exposed to flames, indicating their resistance to combustion. Plastics are widely used in products such as electrical appliances, automotive parts, and medical components. Flame retardancy is one of the very important evaluation criteria for ensuring the safety of these products. The flame retardancy grades of plastics are evaluated in six levels according to the UL94 standard, listed from lowest to highest as HB, V-2, V-1, V-0, 5V-B, and 5V-A. HB indicates that the material is slow-burning and does not have self-extinguishing properties. Grades V-2 and above have self-extinguishing properties, and the classification is based on combustion time. Fluoropolymer (PTFE) is cited as the material with the highest flame retardancy. These materials do not contain hydrogen atoms in their molecular structure, and the C-F bonds within the molecular structure are strong, making them difficult to ignite. Flame retardancy is an important indicator for enhancing the safety of plastics. It is crucial to select materials with appropriate flame retardancy grades according to the product's application and usage environment. If you would like to learn more about flame retardancy, please download the materials or check the related links.

This document is intended for those who want to learn more about the flame retardancy of plastics and those interested in the flame retardancy of fluororesins. ■INDEX■ 1. What is flame retardancy? 2. The three elements of combustion 3. Flame retardancy of plastics from the perspective of oxygen index and standards 3-1. Oxygen Index 3-2. UL94 standard 4. Characteristics of flame retardant materials (fluororesin PTFE) 4-1. Strong C-C bonds 4-2. Low reactivity with oxygen 5. Applications of fluororesin flame retardancy If you would like to know more about flame retardancy, please download the document or check the related links.

PTFE (polytetrafluoroethylene) has a very stable molecular structure and excellent chemical resistance. It is also known for its particularly high gas barrier properties among fluoropolymers. This is because PTFE has very low permeability, making it difficult for gases and vapors to pass through. Therefore, it is suitable for use under harsh chemical conditions, such as in chemical plants and semiconductor manufacturing processes. Furthermore, PTFE has high heat resistance and can be used in a temperature range from -200°C to +260°C. This allows it to maintain its properties even under extreme temperature conditions. However, it is important to select the appropriate usage environment, as it may react with fluorine (gas) or alkali metals (sodium, potassium, lithium) under certain conditions. Fluoropolymer lining can form a lining with high gas barrier and chemical resistance properties on the substrate. For more detailed information on chemical resistance, please download the materials or contact us.

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.

This comparison table summarizes the characteristics of representative fluoropolymers and their maximum operating temperatures (heat resistance). 【Comparison of Types of Fluoropolymers and Heat Resistance】 　Name　　 Maximum Operating Temperature (Heat Resistance) 　PTFE　　 260℃ 　FEP　　　 200℃ 　PFA　　　 260℃ 　ETFE　　 150℃ 　ECTFE　　 150℃ 　PCTFE　　 120℃ 　PVdF　　 150℃ 【Selection of Fluoropolymers】 　Highest heat resistance (260℃): PTFE, PFA 　Slightly lower heat resistance (below 200℃): FEP, ETFE, ECTFE, PCTFE, PVdF 　Balance of chemical resistance and non-stick properties is important: selection according to application is necessary ▶ For details on each fluoropolymer, please download and check the "Fluoropolymer/Super Engineering Plastic Properties Summary Table."