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Rotational Molded plastic parts

Rotational Molding Plastic Parts

Rotational Molding Plastic Parts

Rotational Molding, also called rotomolding or rotocast, is a thermoplastic process for producing hollow parts by placing powder or liquid resin into a hollow mold and then rotating that tool bi-axially in an oven until the resin melts and coats the inside of the mold cavity. Next the tool is cooled and the part is removed from the mold.

Four steps in manufacturing a rotational molded part

1. Fill the mold with a polymer material

2. Heat tool in oven to melt material

3. Cool tool to solidifies the part

4. Remove part from the tools

Design & Manufacturing

Rotational molded parts can be made out several different kinds of materials and have multi-layered walls. Inserts and spin weld attachments that add a variety of attachment options. Unusual shapes can be produced as one part, that normally would have to be assembled from several parts.

An in-house design & engineering department can help guide your project through the steps of making a rotational molded part. Rotational Molding can produce small to large, simple to complex parts. Additionally light post mold assembly, secondary operations, and custom packaging are available.

Advantages of Rotational Molding

  • Design flexibility allowing complex geometry
  • Improved thru put by decreasing labor hours
  • Tooling cost are less then other plastic molding methods
  • Parts offer strength, corrosion resistance and durability
  • Stress free parts
  • Short lead times on production
  • Consistent wall thickness
  • Potential weight reduction