The Benefits of Rotomoulding

Rotational moulding or rotomoulding is a manufacturing process used to create hollow plastic parts. It involves heating and rotating a mould filled with plastic material until it melts and coats the inside of the mould. Then, the mould is cooled, and the solidified part is removed. Rotomoulding has several advantages over other plastic moulding processes. In this article, we will discuss the benefits of rotomoulding in detail.


Rotomoulding is a versatile and cost-effective manufacturing process used to produce a wide range of hollow plastic products, including storage tanks, bins, and playground equipment. Rotational moulding has become increasingly popular in recent years, thanks to its numerous advantages over other plastic moulding processes.

Cost-Effective Manufacturing

Rotomoulding is a cost-effective manufacturing process, especially for relatively low volume production runs. Unlike other plastic moulding processes, rotomoulding does not require expensive moulds or tooling, which makes it an affordable option for small to medium-sized businesses. Additionally, the process involves minimal waste, as any unused plastic can be recycled and reused, further reducing costs.

Design Flexibility

Rotomoulding offers design flexibility, allowing manufacturers to create parts with complex shapes and intricate details. The process allows for uniform wall thickness, which is essential for producing consistent parts. Designers can also incorporate features such as textured surfaces, logos, and patterns, making the final product visually appealing.

Low Tooling Costs

Rotomoulding requires minimal tooling compared to other plastic moulding processes. This reduces the cost of tooling and allows for changes to be made quickly and easily. Rotomoulding tools are also easy to repair, which further reduces costs.

Durable and Strong

Rotomoulded parts are durable and strong, making them suitable for a wide range of applications. The process produces parts with consistent wall thickness, making them resistant to impact and stress. Rotomoulded parts are also resistant to UV radiation, which can cause other plastics to degrade over time.

Lightweight Products

Rotomoulded parts are lightweight, which makes them easy to transport and install. The process allows for the creation of parts with thin walls, reducing the weight of the final product. This is particularly useful in applications where weight is an issue, such as automotive and aerospace industries.

Easy to Colour

Rotomoulding allows for easy colour customisation, with the option to add pigments directly into the plastic material. This eliminates the need for painting or other post-processing methods, reducing production time and costs.

Environmentally Friendly Products

Rotomoulding is an environmentally friendly manufacturing process. The process produces minimal waste, and any unused plastic can be recycled and reused. Additionally, rotomoulding uses less energy than other plastic moulding processes, reducing its carbon footprint.

Ability to Create Complex Shapes (continued)

Some products require complex shapes to optimise their design and usage. This flexibility also allows for products to be made stronger through design which is especially important in industries such as defence, automotive and aerospace industries. Moreover, the process can produce multiple parts in one cycle, saving time and reducing manufacturing costs.

Uniform Wall Thickness

Rotomoulding produces parts with uniform wall thickness, which ensures consistent quality and strength. The process uses gravity to distribute the plastic material evenly, resulting in parts that are resistant to warping and distortion. This makes rotomoulding ideal for producing parts that require high precision and accuracy.

Easy to Add Inserts and Accessories

Rotomoulding allows for the easy addition of inserts and accessories, such as threaded fittings and metal reinforcements. The process can produce parts with moulded-in inserts, which eliminates the need for post-processing methods such as drilling or gluing. This reduces production time and costs while improving the strength and durability of the final product.

Low Volume Production

Rotomoulding is an ideal manufacturing process for relatively low volume production runs. The process does not require expensive tooling or machinery, which makes it an affordable option for small businesses and startups. Additionally, the process allows for quick changes to be made, which is useful for companies that need to produce small quantities of different products.

Resistant to Chemicals and Corrosion

Rotomoulded parts are resistant to chemicals and corrosion, making them suitable for use in harsh environments. The process produces parts with consistent wall thickness, which ensures that they can withstand exposure to chemicals and corrosive materials. This makes rotomoulding an ideal choice for producing parts for chemical storage and processing industries.

Easy to Repair Tooling

Rotomoulding tools are easy to repair, which reduces downtime and production costs. The process uses simple tooling, which can be repaired or replaced quickly and easily. Additionally, the process allows for changes to be made to the tooling without affecting the quality of the final product.



Rotomoulding is a versatile and cost-effective manufacturing process that offers numerous benefits over other plastic moulding processes. It allows for the creation of parts with complex shapes, uniform wall thickness, and easy customisation. The process is also environmentally friendly, durable, and resistant to chemicals and corrosion. With its low tooling costs and ability to produce low volumes, rotomoulding is an ideal choice for small to medium-sized businesses as well as large corporations.