A storage tank, a playground slide, and an equipment housing have very different jobs to do. Yet plastic can be a practical material for all three. That versatility makes it worth considering when you’re developing a new product or looking for ways to improve an existing one.
The benefits of plastic go beyond the shapes you can create. Lower weight, resistance to rust, and opportunities to simplify assembly can influence how much a product costs to manufacture and how well it works for the people using it. So, what could plastic offer your next project? Let’s take a closer look.
What Benefits Can Plastic Bring to Your Project?
Your material choice needs to make sense for the finished product. Something that stays outdoors year-round faces different demands than a component used inside a building. Plastic offers several useful properties, and understanding them can help you decide where it fits.
It Won’t Rust
Moisture is a regular concern for outdoor equipment, agricultural products, and storage containers. Plastic won’t rust, so there’s no need to paint or coat the plastic itself to prevent rust from developing.
That can mean less maintenance over time. Plastic can also resist many chemicals, which makes it useful for certain tanks and containers. The material still needs to be matched to the contents, since resistance varies with the chemical, concentration, and temperature.
Lighter Parts Can Be Easier to Handle
Weight matters long after a product leaves the factory. Someone may need to unload it, carry it through a doorway, install it, or move it repeatedly during the workday.
Plastic parts can be lighter than comparable metal alternatives, depending on the design. For a container that’s frequently repositioned or a large equipment component, that difference may make handling easier. It’s worth looking at these everyday tasks when weighing your material options.
The Right Plastic Can Stand Up to Repeated Use
Equipment gets bumped. Containers get moved. Playground components see hours of activity. A product needs to handle the conditions it was designed for without requiring constant repairs.
Polyethylene, which is commonly used in rotational molding, offers good impact resistance. However, performance depends on the grade and part design. Outdoor applications also need consideration of sunlight and temperature exposure; suitable UV stabilizers can help improve weather resistance.
More Freedom to Design Around Your Needs
Sometimes, improving a product comes down to a small design change. A better grip could make a container easier to carry. A recessed area might protect a fitting. A different contour could help a component fit into an awkward space.
Plastic product design gives you room to explore these changes. Rotational molding supports a variety of shapes, including large hollow parts, allowing the design to reflect the product’s intended use.
The best time to discuss those ideas is before the design is finalized. Your manufacturing partner can help assess which features are practical to mold and where adjustments could make production easier.
How Rotational Molding Supports Your Design
Choosing plastic is one decision. Choosing how to manufacture it is another. Rotational molding is particularly useful for hollow products, including tanks, containers, and playground components.
During the process, plastic material is heated inside a mold that rotates slowly, allowing the material to coat its interior. The part is then cooled and removed.
Fewer Separate Pieces to Assemble
Some products that would otherwise require several joined sections can be molded as one hollow piece. That can reduce assembly work and the need for certain fasteners or joining operations.
For example, producing a tank body in one piece removes the need to join separate wall sections. Fittings and openings still require proper design, but simplifying the body’s construction can offer a practical advantage.
Features That Help the Finished Part Work Better
Custom plastic parts may need mounting points, threaded connections, or a particular surface finish. These details are worth discussing early because they can affect the mold and manufacturing process.
Rotationally molded products can incorporate options such as inserts, textures, and custom colours. The right combination depends on what the part needs to do and how it connects with the rest of your product.
Look Beyond Material Price When Comparing Costs
It’s tempting to start with the price of plastic vs metal. However, that figure won’t tell you the full cost of producing and using the finished part.
A more useful comparison includes:
- Tooling: What’s required to manufacture the design?
- Production quantity: How many parts will share that initial tooling cost?
- Assembly: How much work is needed after molding?
- Handling and transportation: How will size and weight affect moving the product?
- Maintenance: What upkeep will it need during use?
Combining several components into one could save assembly time. Reducing weight may simplify handling. Those possibilities deserve consideration alongside the purchase price, while keeping the required performance at the centre of the decision.
Start With What Your Product Needs to Do
You don’t need to arrive at your first manufacturing discussion with every detail settled. A clear explanation of the product’s purpose is a useful starting point.
Bring sketches, approximate dimensions, and information about how it’ll be used. Mention expected loads, outdoor exposure, operating temperatures, and any contact with chemicals. Estimated quantities and your timeline will also help guide the conversation.
These details give your manufacturer a better basis for assessing the material and process. They can also reveal questions that need answering before you invest in tooling.
Bring Your Project Ideas to SPI Plastics
Perhaps you’re developing something new, or you’ve got an existing product that’s heavy, difficult to assemble, or ready for a redesign. Exploring plastic could open up useful options.
At SPI Plastics, we’ll work with you to understand your project and its requirements. Our custom molding capabilities support small and large parts, with designs ranging from simple to intricate.
Contact SPI Plastics to discuss our rotational molding services and find out how we can help develop a product that meets your specifications.