Rotational Molding
When quality, support and cost-effective plastic rotational molding solutions matter, Custom Plastic Solutions delivers.
We combine our plastics expertise with the fabrication capabilities of world-class rotational molding manufacturers to assure high quality at a competitive price.
What is Rotational Molding?
Rotational molding is a plastic manufacturing process that creates parts by heating a mold and rotating it along two axes. Plastic powder or resin is placed inside the mold, and as it heats up, the material melts and coats the interior surfaces of the mold evenly. The continuous rotation ensures that the plastic forms a uniform layer on all sides of the mold, creating a consistent wall thickness. This process is ideal for producing large, durable parts such as tanks, toys, outdoor equipment, bins, and road barriers.
Custom Rotational Molding Solutions
Quality and cost count when it comes to rotational molded parts. We specialize in high quality cost competitive rotationally molded parts. Our customers get on-time quality parts that lower risk and add value to the supply chain.
Why you should rotational mold your parts?
- Lower material cost
- Design flexibility
- High-quality parts
- Faster mold production
- Shorter lead times to market
- Economical mold and production costs
- Stress-free parts
Our Rotational Molding Capabilities
We’ll work with you to determine the best material for your application, then we’ll see the process through assembly, finishing and packaging. These materials offer excellent processability and can be adapted for various applications requiring chemical resistance, durability, and strength.
The Right Resin Solution
Polyethylene is the predominant material used in rotational molding today. Our manufacturers also have experience with polypropylene, flexible PVC, nylon and EVA. We can help you select the best material for your application:
- LLDPE
- HDPE
- PP
- PVC
- NYLON
- EVA
Industries We Serve

Recreational Vehicles
Sporting Goods
Marine
Agriculture
Industrial
Transportation
Building/Construction
Electrical/Electronic
Benefits of Working with Custom Plastic Solutions
With nearly three decades of experience in the plastics industry, the Custom Plastic Solutions team understands that time counts and quality matters. Since 2015, we’ve supplied OEMs and large processors with high-quality, low-cost plastic raw materials and unbiased manufacturing solutions – all backed by exceptional customer service. In fact, service is what matters most to our partner OEMs and large plastics processors. Our expertise shortens your time to market, delivering cost savings and simplifying the demands on your supply chain.
Frequently Asked Questions
What is rotational molding, and how does it work?
Custom rotational molding allows you to create plastic parts or products that are hollow inside. During the manufacturing process, heating and rotation force resins to the inside of a mold. The process creates a seamless, uniform exterior and hollow plastic parts.
What materials are typically used in rotational molding?
Linear Low Density Polyethylene is the most common resin used in rotational molding. High Density Polyethylene, Polypropylene, EVA, Flexible PVC and in some cases; Nylon, can all be rotationally molded.
What types of products can be created using rotational molding?
Rotational molding is a desirable process for manufacturing larger hollow parts, or parts with dual walls for strength and stability. We have molded everything from mailboxes, flower pots, containment enclosures, recreational vehicle accessories and OEM components.
How does rotational molding compare to other plastic manufacturing processes like injection molding or blow molding?
Rotational molding uses rotational force and heat to distribute the resins, instead of pressure. Picture a clam-shell. There’s a bottom and top half to every mold. The mold separates to add the resin, and it is closed during molding. This differs from plastic injection molding, which relies on high-pressure injection of plastic directly into a mold and pressure to pack and cool the part.
What are the benefits of using rotational molding for custom plastic parts?
Rotational molded parts are usually tough and durable. You commonly see rotationally molded parts in some of the most demanding applications for requiring strength, stiffness, impact resistance and weatherability.
How long does the rotational molding process take from design to final product?
If you have an existing tool that is production ready, we can get you up and running within days. If your design is completely new, requires tooling with minimal complexity, the commercialization window can be compressed to 8-10 weeks.
What are the typical lead times for a rotational molding project?
Manufacturing new orders usually takes 2 to 4 weeks. We always ask what the customer needs.
Is rotational molding cost-effective for large-scale production?
Absolutely! Since we partner with one of the leading rotational molding companies, we can work with you to determine the most cost-effective method for your needs, ensuring a quality product every time.
How does Custom Plastic Solutions ensure quality and consistency in rotational molded products?
We work with our customers to understand their requirements and expectations ahead of time. We build plans with our customers and manufacturing teams to meet and exceed these expectations on every order and collectively throughout the life of the rotational molding program, ensuring no quality issues arise.
Can Custom Plastic Solutions handle both large and small production runs?
Yes! Not all rotational molding manufacturers are created equal. We have worked with customers with run sizes from less than 100 parts to thousands of parts per order.
What are the design limitations, if any, of rotational molding?
We can work with you to determine how to deliver the part you need based on the best rotational molding techniques. Typically, parts will need to be at least 1/8-inch thick. When it comes to complex geometries or contours, we will make recommendations based on the proper design and the product’s intended use.
How durable are rotational molded products compared to other manufacturing methods?
Rotational molded parts are very durable. Applications include road barriers, traffic barrels, recreational vehicle components, kayaks and more.
Can Custom Plastic Solutions assist with product design and prototyping?
Absolutely. Just reach out to our design team to set up a meeting.
How can I get a quote for a custom rotational molding project?
Every successful program begins with a conversation. Give us a call to get started.
Every successful program begins with a conversation. Give us a call to get started.
