An Overview of Rotomolding Technology 

Rotomolding or rotational molding is an interesting manufacturing process that is commonly used to make hollow plastic products. It is a simple yet complex manufacturing process that relies on rotation to create 3D products. In this blog post, we will explore all the major aspects related to rotomolding, including what it is, how it works, and what it can be used for. So, if you are interested in learning more about this innovative production method, keep on reading!

What is Rotomolding?

Rotomolding is a manufacturing process that involves the use of mold and heat to manufacture plastic products. The process starts by adding plastic resin to a mold cavity. The mold is then heated and rotated at a slow speed, which causes the plastic to melt and form a coating on the mold’s interior surface. The mold is then cooled, and the product is removed. The product that is created using this method can range from simple containers to complex automotive parts.

How Does Rotomolding Work?

Rotomolding involves four main stages: loading, heating, cooling, and unloading.

In the first stage, the plastic resin is loaded into the mold cavity. The mold cavity can be designed to create any shape, size, or contour required.

In the second stage, the mold is heated to a temperature that will melt the plastic resin. The mold is then rotated at a slow speed to ensure that the melted plastic evenly coats the mold’s interior surface.

In the third stage, the mold is cooled, usually by introducing water into the mold cavity. The cooling process ensures that the plastic product solidifies and takes on the desired shape.

Finally, in the fourth stage, the cooled product is removed from the mold cavity, and the process starts again.

What Can Rotomolding Be Used for?

Rotomolding can be used to manufacture a wide range of plastic products, including toys, containers, automotive parts, and even furniture. The process is especially useful for creating complex, large, or hollow products that cannot be easily produced using other manufacturing methods, such as injection molding or blow molding.

Rotomolding is also a highly flexible production method that enables manufacturers to create highly customized products that meet specific requirements, such as chemical resistance, impact resistance, or durability.


So, there you have it – a comprehensive guide to rotomolding. This innovative manufacturing process has revolutionized the plastic industry by providing a unique and versatile way to create products of various shapes and sizes. From toys to furniture, automotive parts to containers, the possibilities with rotomolding are endless. As the demand for high-quality plastic products continues to grow, rotomolding is expected to become even more popular in the future. So, if you are looking for a reliable manufacturing method that can help you create unique and durable products, you should definitely consider rotomolding.