How Plastic Injection Molding Works
- Material Preparation: Plastic granules, often thermoplastics, are fed into a hopper and then into a heated barrel.
- Melting and Injection: A reciprocating screw or plunger melts the plastic and injects it into a mold cavity under high pressure.
- Cooling and Solidification: The mold cools the molten plastic, causing it to solidify into the desired shape.
- Ejection: Once solidified, the mold opens, and the ejector pins remove the finished part.
Advantages of Injection Molding
- High Production Efficiency: Rapid cycle times allow for the production of thousands of identical parts quickly.
- Complex Geometries: Capable of producing intricate designs that would be challenging with other methods.
- Consistent Quality: Automated processes ensure uniformity and precision across large batches.
- Material Efficiency: Excess material can be recycled, minimizing waste.
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