At this year’s China International Medical Equipment Expo and China International Medical Equipment Design and Manufacturing Technology Exhibition (CMEF & ICMD), WACKER Chemie introduced a new ELASTOSIL® LR 3178/40 CN for polycarbonate (PC) substrates. Viscous liquid silicone rubber. The product does not contain bisphenol A, does not require primer treatment, and can be cured and bonded to the PC substrate at one time. It is suitable for the main structure of medical products and the production of precision sealing parts. In addition, WACKER will also exhibit the SILPURAN® 21XX series of high-adhesion silicone gels suitable for wound dressings and wearable devices. CMEF & ICMD 2020 will be held in Shanghai, China from October 19th to 22nd.
With the continuous improvement of medical products' requirements for accuracy and sealing performance, product designs based on plastic + rubber (P+R) materials are increasingly used in the medical industry. For example, respiration masks made of plastic as the main material often use silica gel at the edge of the skin contact. The traditional treatment method is to brush the primer on the substrate first, then bond with the silicone rubber and then bake and cure. Such a process is complicated and the precision of the finished product is also low. At the same time, the primer often contains organic solvents, which may not only cause skin sensitization risks to users, but also pollute the environment. Using WACKER’s new ELASTOSIL® LR 3178/40 CN self-adhesive liquid silicone rubber can simplify the process and achieve safer and more reliable bonding.
WACKER launched ELASTOSIL® LR 3178/40 CN during CMEF & ICMD 2020. This self-adhesive liquid silicone rubber is suitable for the production of the main structure of medical products and the production of precision sealing parts.
ELASTOSIL® LR 3178/40 CN is a two-component, platinum-catalyzed addition type liquid silicone rubber, easy to color, fast curing. After curing, it is translucent and has excellent mechanical strength. The product does not contain bisphenol A and has passed ISO10993 biocompatibility certification. ELASTOSIL® LR 3178/40 CN does not require primer treatment, and can be bonded to a variety of PC substrates at one time and cured to form an excellent bonding effect, and does not adhere to the hardened steel material of the mold inner surface. The product is especially suitable for injection molding process, and can be used to produce the main structure and precision sealing parts of medical products, such as breathing masks, valves, diaphragms, seals, medical device handles and other applications.
During CMEF & ICMD 2020, WACKER will also exhibit the SILPURAN® 21xx series of medical silicone gels. Wound dressings using this series of products have low allergenicity and high air permeability, which can provide patients with a comfortable wearing experience. SILPURAN® 21xx series can make dressings adhere to the skin gently and reliably, avoiding secondary damage to open wounds when removed, and its excellent biocompatibility and comfort make it an ideal choice for high-end wound dressings. Especially the new SILPURAN® 2114 and SILPURAN® 2122 products, while continuing all the characteristics of this series of products, significantly improved adhesion. The peel force of SILPURAN® 2114 to stainless steel plates can reach as low as 3.5 Newtons/inch, and SILPURAN® 2122 can even reach 5.5 Newtons/inch, providing a higher adhesion force option for innovative wound dressings, sports medical and wearable testing equipment.
The new SILPURAN® 2114 and SILPURAN® 2122 significantly improve the adhesion, providing a higher adhesion choice for innovative wound dressings, sports medical and wearable testing equipment.