Rotational Moulding

Rotational moulding is a production process that is particularly suitable for large, hollow products. We can produce parts with uniform wall thickness and complex shapes, at a relatively low production cost. The production method means that you get a homogeneous material with low tension and no welding seams.

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Rotational moulding

Moulds are first filled with small plastic pellets. The mould is then heated and rotated, using centrifugal force to coat the inner walls of the moulds with plastic. No additional pressure is required during the casting.

Additional processes can be added; for example filling with polyurethane foam or epoxy filler. Rotational moulding offers the opportunity to manufacture stress-free parts with uniform wall thickness and complex shapes at a relatively low production cost.



Medium and High Density Polyethylene (MDPE, HDPE) are the materials of choice for roto-moulding at PartnerPlast. These materials are fantastically durable and versatile.

Man working in factory.


We have a long history of development, innovative thinking and design in its various segments. Plastic products can be used in combination with components of steel and aluminium as well as integrated electronics systems.

Fish farm with Activa aquaculture buoys and Activa 1800 LED light mast


  • low internal stress

    Low internal stresses

  • PU moulding

    Rotational moulding

  • relatively low tooling cost

    Relatively low tooling costs

  • no wealding seams

    No welding seams

  • large product at low cost

    Large products at low cost

  • design freedom realize your dream

    Design freedom - realise your dream

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