What Is A Roto-Molded Cooler And How Is It Made

What Is A Roto-Molded Cooler And How Is It Made

Sometimes even the ice chests on wheels are not as good for the occasion as a roto-molded ones. Roto-molded coolers have become a trendy topic these days. Maybe it’s about time we got on the band wagon and learned what it is and how it is made.

Rotational molding technology

Many cooler models have roto-molded frames, which puts them into a higher priced category. Roto-molding is a method of shaping plastic in a particular way. The final product has no seals or structural flaws and is more secure and sturdy than normal coolers. In more depth, here is what the process of roto-molding is carried out.

In a nutshell, roto-molding means filling a cast with hot plastic and twisting it until a uniform layer is formed down the whole frame. In other words, raw plastic substance is melted and adhered to the mold walls – normally a measured quantity of more adjustable, more costly polymer. Afterwards, the mold is rotated in an oven in different directions (along, up-down) guaranteeing an even layer of the material. The outcome is a final product with even density throughout the mold, particularly at the rim and stress riser spots.

This manufacturing technique makes a smaller ecological footprint, since the melting of the plastic dusts is conducted without direct flames or heat sources. The oven functions using induction method. This method is more time-consuming than other traditional plastic molding practices like injection molding but produces a tougher, more sustainable cooler.

Pros of roto-molded coolers

Here is what you gain from using the roto-molding technology for coolers and why should consider buying it.

Wall density, for instance, makes it possible for a cooler to provide a wide uniform layer of foam padding along the cooler frame. You can achieve a very intricate layout because of this spinning method, which is why coolers made that way can have uncommon shapes. This helps to expand on essential details such as efficient drainage, higher portability and overall convenience.

One-piece structure on a roto-molded cooler equals fewer seams, edges, stress riser spots and less exposure to wear and tear. This structure also reduces chances of rusting at locks and hooks. Hefty, more reliable plastic is much better for a cooler that will stand the test of time.


The price for roto-molded coolers can go up because of several factors:

  • It is a time-consuming process.
  • Limited material alternatives.
  • Extra costs of add-ons, powdering stage and human labor.

In conclusion

Roto-molded coolers have their frames made by a rotation and covering method that enhances toughness and sturdiness over time. Moreover, it is made with top-grade plastics that are more likely to be in your service for a long time. The designs are interesting and ensure even wall thickness. However, all these perks are pointless if you can’t afford it. So it’s up to you – if you are in the position to splash out, you won’t regret it.