From a basic concept through to design and manufacture, Galloway International has experienced staff to make your idea happen using polyethylene custom moulding.

Every customer presents us with a unique concept giving us 40 years of experience encompassing a huge range of shapes and sizes. Our manufacture process using rotational moulding with polyethylene has proved versatile and cost-effective.


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Benefits of rotational moulding using polyethylene include:

  • UV stabilized material
  • Excellent impact resistances
  • Low Maintenance
  • Low Cost of Installation
  • Long Lifetime
  • High Safety Record
  • Easily Processed and Recycled


Designers of plastic parts turn to rotational moulding to produce small or large parts of unusual shape that cannot be produced as one piece by another process. Due to the low tooling cost, rotational moulding is ideally suited to producing prototypes, or small or large quantity production parts.

Another cost limiting factor is the amount of material wasted in production. There are no sprues or runners (as in injection moulding), no off-cuts (thermoforming), or pinch off scrap (blow moulding). What material is wasted, through scrap or failed part testing, can usually be recycled.


The low processing pressure involved in rotational moulding has the added advantage of producing parts which are relatively stress free, the moulds do not have to be designed to withstand the high pressure of injection moulding so mould costs are lower. This advantage of the process is especially important when considering large, load bearing parts in applications which must provide corrosion or stress-crack resistance.


The ability to add prefinished pieces to the mould alone is a large advantage. Metal threads, internal pipes and structures, and even different coloured plastics can all be added to the mould prior to the addition of plastic pellets. This shrinking allows for mild undercuts and negates the need for ejection mechanisms (in most pieces).

Traditionally, metal components are weakest at the corners - the exact areas where the parts endure the most stress. With injection moulding or blow moulding, it's difficult to achieve total consistency in wall thickness. Rotomoulding results in seamless parts with uniform wall thickness with more material in corners to absorb shock and stress where they are most likely to occur.


One of the great features of rotational moulding is the ability to convert large numbers of assembled components into a single functional plastic part. This not only eliminates assembly time and cost, but can also result in a more functional part with better ergonomics.

Typical designing, tooling and production can take as little as 3 months. Injection and blow moulding can take 6 months or more. Rotational moulding can get your product to market faster and more economically than any other process. Another advantage lies in the moulds themselves. Because there is no interior core to manufacture, tooling for rotational moulding parts is less expensive, they can be manufactured and put into production much more quickly than other moulding processes.