Optimising your Rotation Ratios with Simulation Software

Dr. Gareth McDowell

493K

The rotational moulding industry is entering a new era where digital engineering is becoming as important as manufacturing expertise. As manufacturers face increasing pressure to reduce costs, shorten development times, improve product quality and bring innovative products to market more quickly, simulation technology is emerging as a key competitive advantage. This presentation introduces SIMOULDING, a Computer-Aided Engineering (CAE) software package developed specifically for rotational moulding, and explores how it is helping transform the way rotomoulded products are designed and manufactured.

Traditionally, new rotomoulded products have relied heavily on physical prototypes, repeated mould trials and engineering experience to achieve the desired result. Although effective, this approach can involve costly mould modifications, extended development programmes and significant material waste. SIMOULDING changes this process by allowing engineers to simulate the entire moulding cycle before a mould is manufactured, identifying potential issues while changes remain fast and inexpensive to implement.

During the presentation, delegates will see how SIMOULDING predicts the movement of polymer powder and molten material throughout the rotational moulding process. The software analyses critical process variables including wall thickness distribution, heating and cooling performance, mould loading, melt progression, Peak Internal Air Temperature (PIAT), adhesion and solidification, enabling engineers to optimise both product design and processing conditions before production begins.

The presentation will demonstrate how virtual simulation reduces uncertainty throughout product development. By predicting manufacturing defects at the design stage, engineers can optimise mould geometry, improve wall thickness consistency, reduce scrap, minimise raw material usage and avoid expensive tooling modifications. The result is faster product development, improved product quality and significantly reduced time-to-market.

As rotational moulding continues to expand into demanding sectors such as automotive, construction, industrial equipment, furniture and technical products, manufacturers must deliver increasingly complex components while maintaining high levels of quality and repeatability. Customers now expect robust engineering, predictable performance and shorter lead times. Simulation provides manufacturers with the confidence to meet these expectations through data-driven engineering rather than relying solely on trial-and-error development.

The session will also highlight SIMOULDING’s comprehensive capabilities, including compatibility with standard CAD systems, support for both solid and shell models, simulation of filling, heating and cooling stages, monitoring of process variables, and detailed graphical analysis of temperature profiles, material distribution and thickness variation. These features provide engineers with valuable insight into process behaviour that was previously only available after production trials.

Ultimately, this presentation will demonstrate that simulation is no longer simply an optional engineering tool but an essential part of modern rotational moulding. By combining decades of industry knowledge with advanced digital modelling, SIMOULDING enables manufacturers to reduce risk, improve sustainability through lower material and energy consumption, accelerate innovation and produce higher-quality products with greater confidence. As the global rotational moulding industry continues to grow, simulation technology will play an increasingly important role in helping manufacturers remain competitive in an evolving marketplace.