Plastic injection multi-shot molding, which is also known as 2-shot molding, is sometimes referred to the bonding of two different materials into one integrated part in one injection machine. Two different materials can be multi-color, multi-material or multi-components. Multi-shot molding machines have tow separate barrels that can be configuration, during injection process, two resins are injected into one mold held in a rotary platen press. And because the two compatible materials cool and cure together forming a chemical bond, multi-shot components have superior bonding compared to insert molding. Multi-shot process provides an efficient way to achieve a product by removing the need for a secondary assembly, which eliminates labor cost and improves efficiency at the same time.
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