BMC is bulk molding compound. BMC molding used a thermoset plastic made up of a polymer resin, various inert fillers, fiber reinforcement, catalysts, stabilizers, and pigments that form a viscous. It is highly filled and reinforced with short fibers.
BMC is available in bulk bags as well as slug form. The mixing operation can be done in a number of ways. There are three methods for combining glass with paste: a continuous screw mixer, a sigma blade mixer and a plough blade mixer. The process chosen is dependent upon specific product properties, product form and volume.
Depending on the end-use application, compounds are formulated to achieve tight dimensional control, flame resistance, high dielectric strength, corrosion and stain resistance and color stability. Its excellent flow characteristics make BMC mold well suited to a wide variety of applications requiring precision in detail and dimensions. The material is available in a wide variety of colors.
BMC moulding process is performed by compression in a BMC mold at a temperature and pressure of 130 -170oC (typically 20-100 bar) or in an injection molding machine (mold temperature of 145 -175oC, pressure 80-160 bar). Besides, BMC mould is suitable for either compression molding or injection molding. In the whole BMC moulding process, what directly affects the quality and accuracy of BMC products is the temperature. Compressing molding of BMC is used to produce complex components such as electrical equipment, car components, housings for electrical appliances and tools, in large industrial volumes.
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