Guide to Rotational Molding Applications

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Rotational molding involves processes used in producing different partially and fully closed items. The process allows for manufacturers to explore design versatility by using rotational molding techniques in their design processes. The processes involve the use of resins, and these resins have different properties, all of which influence the flexibility and rigidity of the item that is produced.


There are many ways the technique is applied today, and we’ll have a look at some of the common ways that the technique is applied:

  • Agricultural, industrial, and commercial storage tank manufacture, and this is done in different sizes, from 5 gallons to 22,000 gallons
  • Doll parts, dolls, balls, cribs, baby manufacture
  • Manufacture of pool tables, hobby horses, and other large and small toys. The interesting thing is that it’s also being applied, even for toys that have complex shapes.
  • Various under-the-hood and in-the-cab automotive vehicular parts
  • Material handling and packaging containers.
  • Production of sporting equipment and playground equipment like footballs, helmets, golf carts, dumbbells, juggling pins, canoes, kayaks, and golf tee markers.
  • Display window mannequins and many other hollow display figures. Their production is done in different shapes and sizes.

Rotationally molded parts are also applied in so many other ways than you imagined. Among these includes its use in battery cases, vacuum cleaner, light globes, portable outhouses, and garbage containers. Game housing, traffic barricades, surfboards, furniture, ducting, and display cases are all items that can be manufactured using rotational molding.

One key thing to note is that rotational molding makes it possible for product designers to create different innovations easily. The interesting thing is that there are different design concerns most of which are handled routinely by rotational molding.

This includes the following:

  • Reinforcing ribs, molding inserts, undercuts, and kiss-off ribbing are mostly including during the Rotomolding
  • When producing double-wall construction, rotomolding makes it a lot easier to ensure that the walls of the part are uniformly distributed.
  • Maintaining the uniform thickness of the wall is achievable with rotational molding. This is because it offers a more concise and consistent level of thickness on the walls, unlike other processing methods used in the manufacture of plastic materials.
  • Molding thicker corners, and this is because of the processes that is involved. Rotomolding usually gives thicker outer corners, and this confers more strength to the part that is created.

There are so many interesting things about rotomolding, but this guide is to give you an idea of the whole process.

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