吉田ＳＫＴ Product Lineup

"Bi-Coat®" is a coating that achieves excellent non-stick and release properties through a treatment that combines inorganic and organic materials. Compared to conventional fluoropolymer coatings, it has high hardness, is resistant to scratches, and experiences less wear, making it durable for long-term use. It also has high dimensional accuracy and is suitable for applications requiring micron-level precision. *For detailed explanations, please check the link.*

"Bicoat(R)" is an organic-inorganic composite coating system that combines inorganic materials with high hardness, such as metals, ceramics, and chemical conversion coatings, with organic materials that excel in lubricity and release properties, such as fluororesins and siloxane resins. It successfully balances the often conflicting properties of "hardness" and "non-stickiness," making it a reliable choice for applications requiring micron-level dimensional precision, such as molds. The name is an abbreviation of "bicomponent coating" and is a registered trademark of our company.

The features of "Bicoat(R)" can be summarized in three main points. The first is "remarkable durability." It has high hardness, making it resistant to scratches and suitable for long-term use. The second is "excellent wear resistance." With a high surface hardness, it is strong against wear, ensuring longevity even in harsh usage environments. The third is "superior non-stick and release properties." It demonstrates excellent release properties even against highly adhesive substances. Additionally, it allows for micron-level dimensional precision, making it suitable for applications requiring dimensional accuracy such as precision parts and molds, and it also possesses pressure resistance to maintain performance in high-pressure environments. *For more details, please download the PDF or contact us.

The grades of "Bicoat(R)" are selected based on the usage environment and required performance. There are three main criteria for selection: (1) Type of substrate: Since compatibility varies depending on the substrate, such as iron, stainless steel, aluminum, or copper alloys, selection must be tailored to the substrate. (2) Operating temperature (3) The type of substances in contact will also affect the optimal grade. After understanding the specific usage environment and performance requirements, our technical sales representatives will propose the most suitable grade. Please feel free to consult with us.

"Bycoat® Exceed" is an evolved product that enhances the non-stick properties, corrosion resistance, and heat resistance in addition to the basic performance of the conventional Bycoat®. It demonstrates more reliable release properties and durability in applications such as molds that use resins with strong adhesion. The series has two variations. In addition to the basic performance of Bycoat® (high hardness, long lifespan, dimensional stability), "Exceed CR" improves corrosion resistance, while "Exceed HR" enhances heat resistance.

Here are some representative application examples of "Bicoat(R)." In blow molding molds for PET bottles, a release coating on the inner surface prevents the adhesion of softened PET resin due to heat, reducing maintenance burdens while maintaining the transparency of the PET bottles. In heat sealers for pillow packaging machines, non-stick and wear-resistant properties prevent resin adhesion and improve productivity. Additionally, it demonstrates effectiveness in a wide range of applications, including decorative sheet transfer molds, transport jigs, vacuum transfer molds, suction pads, ejector pins, and biodegradable plastic molding molds.

"Bycoat(R)" is suitable for preventing resin adhesion and improving release properties in injection molding molds, and can also be used in precision molds where micron-level dimensional accuracy is required. It provides excellent lubrication for guides and chutes in various packaging machines, achieving wear resistance and improved sliding in areas where friction occurs. It is also useful for releasing components that come into contact with particularly adhesive substances, such as adhesives. Due to its excellent durability, it can be confidently used in applications subject to mechanical loads, such as IC encapsulation cavities, piezoelectric ceramic manufacturing equipment, molds for rubber and resin, and sliding parts.

Bikote(R) also offers PFAS-free product numbers that do not contain PFAS (fluororesin). For information on the presence or absence of PFAS for each product number, please contact us. Additionally, we are advancing the development of environmentally friendly PFAS-free coatings as part of our next-generation product development. If you are considering compliance with PFAS regulations, please feel free to consult with us.

The biggest difference between SafeLon® and conventional fluoropolymer coatings (such as Teflon® coatings) is the anti-static performance. While conventional fluoropolymer coatings excel in electrical insulation and tend to accumulate static electricity, SafeLon® can dissipate the charges that build up on the coating surface into the substrate. It achieves a low electrical resistance value, and its ability to conduct electricity helps reduce the adhesion of dust and other particles caused by static electricity. In addition to these features, it maintains the basic properties of fluoropolymer coatings, such as non-stick and chemical resistance.

The various grades of "Saflon(R)" are selected based on the usage environment and required performance. For applications where corrosion resistance is particularly important, "Saflon(R) AP+" is suitable, while "Saflon(R) AS+" is appropriate for environments requiring stain resistance and release properties. If lubrication is needed or for applications on heat-sensitive substrates like resins, please choose "Saflon(R) LF+," and for applications requiring transparency, "Saflon(R) CC+" is recommended. After understanding your specific usage environment and performance requirements, our technical sales representatives will propose the optimal grade. Please feel free to consult with us.

The substrates compatible with "Safron(R)" include iron (ferrous materials), stainless steel (SUS), and aluminum. Additionally, some grades such as "Safron(R) LF+" are available in types that can be processed at low temperatures below 100°C, making them applicable to substrates with low heat resistance, such as resins. The applicability and pretreatment methods vary depending on the type and condition of the substrate, so please consult our technical sales representative for specific applicability.

"SafeLon(R)" is suitable for preventing adhesion in environments where static electricity is a concern, such as preventing the adhesion of dust due to static electricity. By processing conveyor guides and chutes, it helps prevent poor flow and clogging during transport. In piping and chemical tanks, its chemical resistance contributes to protection from corrosion and improved safety. In stirring blades, it prevents the adhesion of chemicals and materials, reducing cleaning efforts. In the field of electronic components, it suppresses defects and the occurrence of defective products caused by static electricity in manufacturing equipment, while in food-related equipment, it achieves prevention of food adhesion and improved cleanability. The "SafeLon(R) CC+" specialized for transparency can provide anti-static properties while maintaining transparency in glass and transparent resin components.

"SafeLon(R) LF+" is a grade developed as a new option for applications that require not only static electricity prevention but also mechanical strength, which the conventional SafeLon(R) series could not adequately address. LF stands for "Low Friction," meaning it has a low coefficient of friction and excellent lubricity. It also excels in coating hardness and wear resistance, making it suitable for applications that require mechanical strength. Furthermore, while conventional fluoropolymer coatings typically require firing at around 400°C, there are product numbers that allow for low-temperature processing below 100°C, making it applicable not only to metals but also to resin substrates.

MRS coatings have different grades depending on the usage environment and the required performance. For environments that require frequent cleaning with solvents, "MRS-102," which has excellent solvent resistance, is suitable. For cases where it is necessary to maintain surface shape with a thin film, such as with cutting tools and precision parts, "MRS-014" or "MRS-003" are chosen. If used in high-temperature environments, "MRS-004" is appropriate, and for processing resin products at low temperatures, "MRS-230" is suitable. After understanding the specific usage environment and performance requirements, our technical sales representatives will provide appropriate suggestions.

The main reason why silicone coatings excel in release properties is their "excellent repellency (low surface tension)." This property exhibits "water repellency" against water and "release properties" against sticky substances. Because silicone has low surface tension, it does not easily adhere to other materials, resulting in superior release and water-repellent properties. MRS coatings are an innovative coating that leverages these silicone properties while incorporating characteristics such as solvent resistance, high hardness, and high heat resistance, which were difficult to achieve with conventional silicone coatings.

The substrates compatible with MRS coating are mainly metals (iron-based materials, stainless steel, aluminum, etc.) and ceramics. In grades such as MRS-230, which allow for low-temperature processing, it is also possible to process substrates with low heat resistance, such as resins. The applicability and pre-treatment methods vary depending on the type and condition of the substrate, so please consult our technical sales representatives regarding the applicability to specific substrates.

MRS coating is widely used in various industries such as packaging, food, rubber and resin manufacturing, printing, electronic component manufacturing, automotive parts, and medical and pharmaceutical equipment. In the packaging industry, it is applied to devices and packaging machines that handle labels and tapes, while in the food industry, it is used in food processing equipment and conveyor systems. In the rubber and resin manufacturing industry, it is utilized in molding dies and deburring devices, and in the printing industry, it is used in devices that handle adhesive paper and seals. Additionally, in electronic component manufacturing, it is applied to manufacturing equipment that deals with adhesive materials, in the automotive parts industry, it is used in manufacturing equipment for rubber molded parts, and in the medical and pharmaceutical equipment sector, it is utilized in manufacturing devices.

The heat resistance temperature of MRS coatings varies by grade. In particular, the MRS-004 grade, which has excellent heat resistance, can be used at temperatures up to 300°C under certain conditions. For specific usage temperature conditions, please consult our technical sales representative.

Q: What is the difference between not using PFOA and being PFAS-free? A: PFOA is one of the substances included in PFAS. According to structural definitions, fluoropolymers such as PTFE and PFA are also included in PFAS, so simply stating that PFOA is not used does not mean that it is PFAS-free. For individual material verification, please inform us of the substances you are targeting and the necessary documentation based on your criteria, and consult with us in advance.

Q: What is the processing temperature for fluoropolymer resins? A: It varies depending on the type of fluoropolymer resin used, but generally, heating to around 400°C is required for PTFE and PFA. If you are concerned about thermal deformation or dimensional changes of the substrate at this temperature, please consult with a sales representative.

Q: Can only the damaged parts be repaired? A: Since fluororesin coating requires heating in a furnace, it is often difficult to perform partial repairs on-site, and as a rule, the existing coating is removed and reprocessed. However, there are cases where partial repairs are possible, such as with thick PFA coatings or room temperature curing types like Cerashield. If you provide the treatment name, photos of the damaged areas, and usage conditions, we can guide you based on whether the necessary functions can be secured after the repair, so please consult with us first.

Q: Is coating subject to the positive list system (hereinafter referred to as the PL system)? A: The positive list (PL) system for food contact materials and containers includes synthetic resins. Since some coatings contain synthetic resins, it is necessary to confirm their compliance based on the materials and conditions used for applications that come into contact with food. Yoshida SKT provides representative product numbers that comply with the PL system, categorized by function. The confirmation details vary depending on the specific application and required performance, so please inform us of your usage conditions and consult us about the corresponding product numbers.

Q: What points should I check when choosing a coating company? A: It's important to confirm whether they can propose treatments based on your usage conditions, whether there are methods to verify the necessary functions and quality, and whether they can respond to inspections and post-use consultations. When comparing prices, it is essential to align the conditions such as processing range, film thickness, and inspection content. Information about our quality control and supply system can be found on the page below.

Q: What information is needed to request a quote? A: Please provide the material, dimensions, quantity, coating area, and the intended use and conditions of the item to be processed. If you have drawings or photos, it will help us consider your request more specifically. If you have specifications for film thickness, masking, inspection certificates, etc., please let us know as well. You can also consult us if the processing method or film thickness has not been determined.

Q: How long does the coating take to complete? A: It varies depending on the type and quantity of coating, the timing when we can receive the items for processing, the inspection requirements, and other factors. If prototype work or removal of old coatings is necessary, we will consider those processes as well. If you have a specific timeframe in mind, such as a period during which equipment will be stopped, please let us know. We will confirm the delivery time based on the necessary processing and inspection, so please consult with your sales representative in advance.

Q: What materials can be coated with fluoropolymer coating (Teflon coating)? A: Common materials include metals such as stainless steel, aluminum, and iron. Depending on the application, coating on rubber, resin, and ceramics can also be considered. The feasibility of processing and the suitable treatment vary depending on the material, shape, and usage conditions of the base material, so please let us know the target parts and applications for consultation.

Q: What are the differences between the fluoropolymer coating (Teflon coating) of household frying pans and the fluoropolymer coating of Yoshida SKT? A: Household frying pans primarily use PTFE for their fluoropolymer coating, with a film thickness of about 20 to 50 micrometers. Yoshida SKT, on the other hand, employs a non-stick treatment using not only PTFE but also PFA, FEP, and silicone. They offer a nano-process with a film thickness of about 1 micrometer, as well as the TP series and Super TP series, which create textures with fluoropolymers. The selection depends on the contaminants and usage conditions. For application to specific components, please consult us with the necessary functions and usage conditions.

Q: Can we reduce the adhesion of resin and adhesive materials, making cleaning easier? A: It may be possible to improve this with a non-stick coating. The choice of materials, such as fluororesin, silicone-based materials, or treatments that utilize surface roughness, varies depending on what is adhering and the usage conditions. The feasibility of improvement will be considered based on cleaning methods, wear conditions, and the impact on the product, so please let us know your current issues and usage conditions for consultation.

Q: What kind of questions are asked during a consultation about coatings? A: We ask about the material and shape of the parts, current issues you are facing, and the conditions you would like to improve. Factors such as operating temperature, materials or chemicals in contact, load, cleaning methods, and frequency of replacement are also important when selecting a coating. Additionally, if there are materials you want to avoid using for reasons related to your processes or manufacturing methods (such as silicone-based or fluorine-based materials), or if there are conditions like applications that come into contact with food, please let us know.