CMEF & ICMD 2020: WACKER Presents New Polycarbonate Adhering Liquid Silicone Rubber

With growing requirements for medical articles in regard to precision, accuracy, and sealing properties, plastic + rubber (P+R) designs are increasingly used in the medical industry. For example, silicone rubber is often used to produce the edge of the breathing mask which is mainly made of PC. Conventionally, the substrate needs to be coated with a layer of primer curing silicone rubber on the surface. This production process is complicated and the result not very precise. The organic solvents in the primers may also cause allergies and pollute the environment. Using WACKER’s new ELASTOSIL^® LR 3178/40 CN simplifies the process and confers a safer and more reliable adhesion.

ELASTOSIL^® LR 3178/40 CN is an easily pigmentable, two-component addition curing liquid silicone rubber which has short curing times. The vulcanizates are noted for their semi transparency and excellent mechanical properties. It is free from BPA, biocompatible and fully complies with the ISO10993 standard. The product features excellent adhesion properties, and is primerless and can bond with various PC substrates during the first curing phase without easy demoulding process. ELASTOSIL^® LR 3178/40 CN is particularly suitable for the injection process and can be used to produce supporting structures and precise sealing parts of medical articles, such as breathing masks, valves, membranes, sealing parts and handles of medical devices.