What are the methods to prevent mold eye discharge? Introducing improvement cases through surface treatment.
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Preventing eye discharge that occurs during extrusion molding. Successfully stabilizing product quality through surface treatment of molds!
Mold release residue refers to foreign substances that adhere to the surface of molded products when forming thermoplastic materials such as resins and rubber. To prevent this residue, it is necessary to avoid material retention in the mold. When appropriate material selection and molding conditions cannot resolve the issue, adopting a surface treatment with excellent release properties is effective. Here are examples of improvements in mold release residue through surface treatment. ■ Concern We received an inquiry from a customer who was prototyping a new elastomer extrusion product. They wanted to resolve issues related to product stability due to adhesion in the extrusion mold. ■ Background for Coating Adoption Initially, the adhesion was so severe that it was impossible to form the product, but after adopting our surface treatment, we were able to prevent adhesion to a level that allowed for production. However, during continued mass production, it became apparent that defects due to residue adhesion occurred after about a month of use. ■ Selected Surface Treatment 'MRS Coating MRS-102' *For details on 'MRS-102', please download the PDF or contact us. The effects of the surface treatment are listed below.
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■Selection Process and Effects To further address defects, we proposed MRS-102. Although eye discharge occurred when testing began, it did not adhere to the mold and could be easily removed, allowing us to suppress the occurrence of defects and enabling continuous use for six months. ◆MRS Coating◆ (Silicone Coating) 【Series Features】 ■MRS-102 Maintains effectiveness even after cleaning with solvents ■MRS-014 Maintains thinness like a blade and shapes such as ribbing ■MRS-004 Heat resistance exceeding 200°C, comparable to fluororesin (Release even after 16 hours at 350°C) ■MRS-200 Can be heated with resin and rubber products at temperatures below 80°C ■Release Properties (Non-Stick) and Excellent Cleanability → The smooth surface makes it easy to wipe off dirt, and cleaning with solvents does not significantly change the release properties. *Based on our durability tests *For more details, please click on "PDF Download" or feel free to contact us.
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MRS coating
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■Examples of Applications ◆ Adhesive Paper Transport Roller Prevention of adhesive sticking to the transport roll 【Can be cleaned with solvents / Smooth surface without irregularities for easy wiping】 ◆ Film Cutting Table Prevention of sticking to the placement surface 【Can be cleaned with solvents / Smooth surface without irregularities for easy wiping】 ◆ Measuring Cup Prevention of sticking (residue) of measured items 【Can be cleaned with solvents / Good drainage with water-repellent properties / Smooth surface without irregularities for easy wiping】 ◆ Sandwich Cutting Blade Prevention of sticking to the blade 【Can be cleaned with solvents / Thin film does not change the sharpness of the blade】 For more details, please contact us.
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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.