The advantages of rotomoulding for the industrial sector

September 30, 2022


Here at Excelsior, our rotomoulding (rotational moulding) solutions can afford your business a wide range of advantages and benefits, particularly if you operate within the industrial sector. For starters, rotomoulding is the ideal process for making hollow products. Plus, the process doesn’t use pressure like in other casting techniques, which makes it an extremely efficient process from an economic standpoint.

Rotomoulding can be used to make a diverse range of products due to the freedom it offers from a design aspect. As a result, there’s almost no limit to the size of mould that can be made, and they can be designed to fit a variety of applications. So, what sort of advantages can rotomoulding bring to your business? Well…

The rotomoulding process

We’ll spare you the most in-depth technical aspects, but essentially, the rotomoulding process begins with a plastic material, normally in powder form, being placed into a hollow mould. From here, the mould is sealed, heated up and rotated. As the mould is rotated, the plastic inside melts and ‘lays-up’ on the inside of the mould. After a period of time, the hot plastic will line the mould, forming the desired shape. Once this has occurred, the mould is placed into a cooling station to allow the plastic to solidify.

That’s the simple version – additionally, there are a range of variables that can affect production and the end product, such as temperature and humidity, the type of mould being used, the powder quality and so on.

Benefits of rotomoulding

Rotomoulding offers you a range of advantages compared to other moulding processes, such as:

  • Low costs – moulds are inexpensive, so if you have an idea for a new product but want a low volume production run, the low initial costs of rotomoulding make it the perfect solution for new start-ups, as well as existing businesses.
  • Allows for a variety of shapes and sizes – rotomoulding is brilliantly suited to the production of a variety of different products, regardless of the industry they’re intended for.
  • Consistent wall thickness – this increases product strength. Other processes like blow moulding that stretch the molten material can create potential weaknesses in the product.

Professor Roy Crawford, who has long been considered to be the father of research for the rotational moulding industry, sums up the rotational moulding process in the following words:

“There can be no doubt that the rotomoulding industry has made changes and adapted its approach through major technological advances in recent decades. Rotomoulding has evolved from a manufacturing method viewed by many as a black art into a sophisticated process for creating high quality products, some of which could not be created by any other moulding method.”

We’ve got more than a century of history behind us here at Excelsior, so you can always rely on us to help bring every inch of your plastic product to life. And if you’ve got any further questions about rotational moulding, or you need specific advice about your situation, we’re happy to help. Just take a look at some of our successful case studies for previous clients, or give us a call on 0161 250 9772 to see what we can do for you!