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Why SPI Uses Custom Rotational Molding for Playgrounds

Outdoor rotational mold made-plastic playground in a park

At SPI, innovation is at the core of everything we do, especially when it comes to designing and manufacturing playground equipment. One of the key techniques we employ to bring our groundbreaking playground concepts to life is custom rotational molding. This process allows us to create playgrounds that are not just fun and engaging for kids but are also safe, durable, and environmentally friendly. But what exactly is custom rotational molding, and why do we choose this method for our playground equipment? This post will explore the answers to these questions and more.

Understanding Custom Rotational Molding

Rotational molding, or rotomolding, is a technique used to create hollow, seamless plastic products. This process involves placing plastic powder in a mold, which is then heated and rotated on two axes. The rotation distributes the plastic evenly along the mold’s inner surface, forming the desired shape as it cools.

But how does custom rotational molding set itself apart? Unlike standard processes that use off-the-shelf molds, custom rotomolding allows for the creation of unique, tailor-made molds. This customization offers unmatched versatility, enabling SPI to craft distinct playground pieces that are as unique as the imaginations they cater to.

Advantages of Custom Rotational Molding in Playground Equipment

When it comes to using custom rotational molding for playground equipment, several advantages make this technique an attractive option for SPI:

Durability and Safety

One primary advantage of custom rotational molding is the exceptional durability and safety of the manufactured playground equipment. The seamless construction of rotomolded pieces means there are no sharp edges or weak joints, significantly reducing the risk of injuries. This process results in robust, single-piece items that can easily withstand the rigours of outdoor play, weather conditions, and enthusiastic kids.

Design Flexibility

The adaptability offered by custom molds allows for innovative playground designs that cater to all children, promoting inclusivity and physical activity. Since the shape, texture, colour, and size can be specially tailored, it opens up a world of possibilities for bespoke playground elements. From slides that mimic the whimsy of a fantasy world to climbing structures that challenge and develop young muscles, the design flexibility of custom rotational molding is unparalleled.


While the initial investment in custom molds might be higher than standard off-the-shelf options, the long-term benefits speak volumes about its cost-effectiveness. Rotomolded playground equipment is renowned for its longevity and low maintenance requirements, translating to significant savings over time. When compared to other manufacturing techniques, the value of custom rotational molded products becomes evident, offering superior durability and minimal upkeep costs.

Environmental Impact

SPI is deeply committed to sustainability, and custom rotational molding aligns perfectly with this ethos. This process is notable for generating minimal waste, which contributes significantly to a healthier planet. By investing in eco-friendly manufacturing methods, we ensure our playgrounds not only enrich children’s lives but also demonstrate respect for the environment.

The SPI Difference

At SPI, we don’t just manufacture playground equipment; we engineer experiences that last a lifetime. Our mastery of custom rotational molding enables us to collaborate closely with our clients, transforming their visions into reality. From the initial design phase to the final delivery, SPI stands out for its innovative spirit and commitment to quality.

What truly sets our playgrounds apart is not just the technology we use but how we use it. Our passion for play and dedication to excellence is reflected in every unique piece we create, ensuring that our playgrounds are not only fun and safe but also enduring symbols of community and joy.


Custom rotational molding is more than a manufacturing process at SPI; it’s a gateway to creating extraordinary and enchanting playgrounds that inspire the next generation. The combination of design versatility, enhanced safety, environmental sustainability, and cost efficiency makes it an ideal choice for crafting world-class recreational spaces.

We invite you to explore the boundless possibilities that SPI’s custom rotational molding offers for your next playground project. Whether you’re looking to inspire, challenge, or simply provide a safe space for fun, SPI has the expertise and technology to bring your vision to life.

Contact SPI Plastics to learn more about our custom playground solutions and how we can help you create a lasting legacy of play for your community.

SPI Plastics Inc.

165 Stoneman Drive, Box 100
(Shouldice Block Road & Joynt Street)
Shallow Lake, ON
N0H 2K0

T   519-935-2211
TF 800-269-6533
F   519-935-2174

Business Hours

Monday - Thursday: 8am to 4:30pm
Friday: 8am to 4pm
Saturday & Sunday: Closed

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