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Injection Molding
Injection molding
can be used to form a wide variety of products. Complexity is virtually
unlimited, sizes may range from very small to very large, and excellent
control of tolerances is also possible. Most polymers may be injection
molded, including thermoplastics; fiber reinforces thermoplastics, thermosetting
plastics, and elastomers.The process is relatively simple:
- Thermoplastic pellets are melted in the barrel.
- The molten
plastic is pumped, under high pressure, into a mold. The
mold must be clamped tightly to keep the plastic from leaking out.
- Cooling
water circulates in the mold, cooling the plastic until it solidifies.
- The
mold is unclamped and parts are ejected with the runner.
- The process
repeats.
Take a closer look at the injection molding process.
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