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Thermoplastic resins such as ABS, Polypropylene, Polystyrene, Nylon and many others come generally in uncolored, virgin pellet form. Thermoplastics may be reground and reused in the molding. These materials have a wide range of properties and may be modified with fillers or additives to achieve engineered performance in specific applications.
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Quality Plastic Resins
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The resin is melted by thermal and shear heat in a reciprocating screw Injection Molding machine. The material is fed into a heated chamber or barrel. The large screw inside the barrel rotates and melts the material via shear friction between the barrel wall and the screw. The molten material is then injected into a steel mold containing cavity(s) of the desired product, where it is cooled rapidly. The mold is clamped together under high pressure until the part is ready to eject from the mold. The cycle is then repeated.
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High Speed Machines
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The injection mold is typically made from hardened tool steel, although aluminum may be used for some low volume applications. Molds can vary from simple open-shut, single cavity tools to complex multi-cavity molds with moving cores, stepped shut-offs, unscrewing devices etc. Due to the tonnage used in this high pressure process, proper materials , supports, parting line locks etc. must used to ensure the life of the mold. Cavities may be polished or textured to achieve a desired finish on the molded part.
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Precision Tooling
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At B-SIDE, we have machines from 75 to 550 tons that can mold parts as small as a computer chip to as large as child's desktop. We mold high volume, 5 million plus consumer parts to low volume, industrial parts out of exotic engineering materials. We have clients with existing molds, or we can build new tooling as needed.
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High Volume Production
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