- 5 leading manufacturers
- 20 additional suppliers
- 15 states and provinces
- 15 related categories
- 1 guide section
Rotomoulding Manufacturers and Companies
IQS Directory implements a thorough list of rotomoulding companies and suppliers. Utilize our listing to examine and sort top rotomoulding companies with previews of ads and detailed descriptions of each product. Any rotomoulding company can design, engineer, and manufacture rotomouldings to meet your companies specific qualifications. An easy connection to reach rotomoulding companies through our fast request for quote form is provided on our website. The company information includes website links, company profile, locations, phone, product videos and product information. This source is right for you whether it's for a manufacturer of rotomoulding tanks, rotomoulded tubing, and thermoplastic fabrication.
Suppliers located in CA, IN, MI +12 more states
Contents (4 sections)
Leading Rotomoulding Manufacturers
Showing all 5
Certification, declaration and ownership records are on file for 1 of 5 suppliers in this list, from supplier reports IQS reviewed. A supplier without one listed may still hold it.
| Placement No. | Manufacturer | Location | Contact | Actions | |
|---|---|---|---|---|---|
| 1 | Roto Dynamics Inc.As a full-service rotational molding company, Roto Dynamics is your source for high quality, custom rotomolded products. Since our inception, we have continued to earn success by closely working with our customers, developing innovative and tailored solutions. We are with you every step of the way, from design and development to production and assembly. For a complete view of our capabilities and services, check out our website, or submit a request for quote to see how we can serve you! | Orange, CA | |||
| 2 | Sherman Roto TankWe are a custom manufacturer of rotationally molded products. Our state of the art technology creates precise, cost effective and dependable products. Whether your order is large or small, we want to be sure you are satisfied. We also manufacture a standard line of chemical storage and process tanks. All of our products go through rigorous testing. The safety of those working with or near our tanks and the environment is a top priority for us. | Pearland, TX | |||
| 3 | Western Industries Plastic Products LLCNo matter what your blow molding needs are Western Industries is ready to assist you. We believe in thinking outside the mold and using unique methods to come up with large-part blow molding solutions for our customers. We have access to state-of-the-art technology and over 100 years of combined experience serving a variety of industries. When you choose Western Industries, you have the Western Advantage. Call today for more information! | Winfield, KS | |||
| 4 | Hi-Rel Plastics & MoldingHi-Rel Plastics is a U.S. custom rotational molding company specializing in durable rotomolded plastic parts, tanks, containers, housings, and large hollow products. We provide prototype through high-volume production using high-quality polyethylene and engineering-grade materials for industrial, agricultural, medical, marine, and consumer applications. Our rotational molding services deliver durable, cost-effective parts with competitive pricing, fast lead times, and reliable U.S. manufacturing.
Hi-Rel Plastics & Molding states: EU RoHS (Supplier-reported, reviewed Sep 2026), EU REACH (Supplier-reported, reviewed Sep 2026), Small Disadvantaged Business (Supplier-reported, reviewed Sep 2026), Minority-owned business (Supplier-reported, reviewed Sep 2026) | Riverside, CA | |||
| 5 | U.S. Plastic Corp.United States Plastic Corp. manufactures and distributes some 25,000 plastic items serving over 85,000 clients operating in a factory five acres under roof. Our major product is manufacturing plastic tanks, the distribution of bottles, carboy and plastic containers. This also includes plastic sheet, rods, tubes, flexible tubing and thousands of plastic fittings. | Lima, OH |
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Leading rotomoulding manufacturers are listed first on this page, each with a website preview and a Request a Quote button on its row.
Additional Rotomoulding Companies
The category’s other rotomoulding companies are listed on their own page, with location, phone and website where each supplier provides them.
View 20 Additional Rotomoulding CompaniesDo not see your company listed in Rotomoulding?
Engineers and buyers use this page to find rotomoulding suppliers. Add your company to the Rotomoulding listings so they can find you too.
List Your Company- Listed in the Rotomoulding directory
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Quick Answers
- How many rotomoulding manufacturers are listed on IQS Directory?
- 5 leading manufacturers and 20 additional suppliers.
- Where are rotomoulding manufacturers located?
- The listed suppliers are in 15 states and provinces: California (4), Indiana (3), Michigan (3), Ohio (3), Texas (2), Iowa (1), Kansas (1), Kentucky (1), and 7 more.
- How do I get quotes from rotomoulding suppliers?
- Select suppliers in the table and choose Request Quotes. IQS reviews your request and forwards it to every supplier you select.
Rotomoulding
Rotomoulding is a thermoplastic fabrication technique that manufactures hollow plastic products by using heat and a revolving metal mold. Rotomolded products are seamless, uniform in wall thickness and of single construction, which eliminates costly fabrication processes and the need for replacement parts. Rotomolded products include safety cones, plastic tanks, footballs, helmets, kayaks, playground slides, pipe fittings and outdoor planters.
The most common thermoplastic material used in the rotomoulding process is polyethylene, other materials include polypropylene, polyvinylidene fluoride, nylon and polyvinyl chloride. These high purity plastics are exposed to high heat and therefore must exhibit good thermal stability. To enhance properties like flame retardancy, water and chemical resistance as well as the ability to withstand extreme temperatures, many resin powders contain additives, which can also alter the color, texture, finish and appearance of the cured plastic's surface. Rotomoulding is an alternative to blow molding, injection molding and thermoforming, but is not as common because of the large, expensive machinery that is used to form the products. Still, this molding process is used within the sporting goods, waste water management, marine, sporting goods, pharmaceutical, construction, toy manufacturing, food and beverage processing, chemical, plumbing, agricultural, furniture, packaging and material handling industries, among others.
The rotomoulding process begins with fabricating the mold by welding, for simpler designs, or die casting, for more complex constructions. The molds are made of stainless steel, aluminum or a combination of both, when wall thickness is not uniform. The rotomoulding machine is composed of a series of different molds, which are mounted on rotating spindles and revolve on one or two axes. The polymer resin powder, which must be very fine in order to coat all areas of the mold, is poured and sealed in. The rotomoulding machines are then transported to an oven chamber while they continuously revolve. Once under high heat, the powder melts and evenly covers the mold walls. Next, it travels to a cooling chamber, which uses a combination of cold water and air to cure the plastic. This takes about 20 minutes. Once the plastic has fully dried, the molds are manually unloaded, which can be difficult if the plastic shrinks. Right out of the mold, rotomoulded products are hollow parts without any openings or holes; they are cut out if needed. The plastic is often cleaned, polished, painted or welded with small components as final post-forming fabrications.
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Rotomoulding - QI Rotomolding |
Rotomoulding - QI Rotomolding |
Rotomoulding Informational Video