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Benefits of Rotational Molding
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Unlike other plastic molding processes, rotomolding results in
seamless parts with uniform wall thickness and more material in
corners, to absorb shocks and stresses where they occur most. Since
the material isn’t stressed during production as in thermoforming
or pressure forming, the finished part is stronger. Plus, the molds
don’t need to be designed to withstand the high pressures of
injection molding. Since the mold has no internal core to manufacture,
tooling costs are also lower - and minor changes easily be
made to existing molds.
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Rotomolding also offers superb flexibility and precision.
- Complex contours, metal inserts, flanges, and molded-in threads
can be designed into the walls - requiring fewer steps to get
to your finished product
- Colors never crack or chip off, since they’re molded-in.
Of course, this means no painting is required
Generally lighter in weight than metal or fiberglass, rotomolded
plastic products are also easy to handle and less expensive to ship.
They’re tough, long lasting, and corrosion-proof.
Other advantages of rotational molding include:
- Short lead-times
- Excellent load-bearing properties
- Ability to produce multi-wall moldings, which can be left hollow
or foam-filled
- Economical for short production runs as well as high volume
output
- Resins can be tailored to suit the application - e.g., to satisfy
FDA requirements
- Minor undercuts are possible - without the need for draft angles
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