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:
Plastic
Injection Molding
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Pros / Cons
Advantages:
- It provides rapid
production rates.
- Intricate parts, molded-in
color, and finished parts can be produced.
- Little mold wear occurs
even after manufacturing millions of parts.
- It creates lightweight
parts, of a specific color, with built in surface texturing, in
a single operation of the injector.
- If duplicate cavities
are present in a single mold, more than one part can be produced
per operation. Moreover, multiple part cavities in a single mold
might give all the parts needed for an entire assembly- like a
model airplane kit.
Disadvantages:
- Tooling is very expensive,
small quantities are not economical.
- Large parts are not
possible.
- To avoid flash production,
large clamping forces are needed-which requires more expensive
injection machines.
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