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  • 5 leading manufacturers
  • 20 additional suppliers
  • 15 states and provinces
  • 15 related categories
  • 2 guide sections
Source: IQS Directory database snapshotOur Methodology
Leading manufacturers
Listings in this category's Leading placements, shown first in IQS sequence order.
Additional suppliers
The category's other listings, shown on its Additional Companies page. Counted by listing.
States and provinces
U.S. states and Canadian provinces where the listed companies are located.
Related categories
Other categories IQS links from this one as related products or processes.
Guide sections
Sections in this category's industry guide.
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Rotomold Manufacturers and Companies

IQS Directory provides a comprehensive list of rotomold companies and suppliers. Use our website to review and source top rotomold companies with roll over ads and detailed product descriptions. Find rotomold companies that can design, engineer, and manufacture rotomolds to your companies specifications. Then contact the rotomold companies through our quick and easy request for quote form. Website links, company profile, locations, phone, product videos and product information is provided for each company. Whether you are looking for manufacturers of rotomolded coolers, the rotomolding process, plastic rotomolding, or customized rotomolds of every type, this is the resource for you.

Suppliers located in CA, IN, MI +12 more states

Read the rotomold guide
Contents (4 sections)

Leading Rotomold Manufacturers

Location
Certifications
Compliance declarations
Ownership & SBA programs

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.

Leading rotomold manufacturers
Placement No.ManufacturerLocationContactActions
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!

LocationOrange, CA
View Manufacturer
2

Sherman Roto Tank

We 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.

LocationPearland, TX
View Manufacturer
3

Western Industries Plastic Products LLC

No 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!

LocationWinfield, KS
View Manufacturer
4

Hi-Rel Plastics & Molding

Hi-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.

  • ISO 9001 (Supplier-reported, reviewed Sep 2026)
  • AS9100 (Supplier-reported, reviewed Sep 2026)
  • ISO 13485 (Supplier-reported, reviewed Sep 2026)

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)

LocationRiverside, CA
View Manufacturer
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.

LocationLima, OH
View Manufacturer
Draft

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Leading rotomold manufacturers are listed first on this page, each with a website preview and a Request a Quote button on its row.

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Additional Rotomold Companies

The category’s other rotomold companies are listed on their own page, with location, phone and website where each supplier provides them.

View 20 Additional Rotomold Companies

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Quick Answers

How many rotomold manufacturers are listed on IQS Directory?
5 leading manufacturers and 20 additional suppliers.
Where are rotomold 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 rotomold suppliers?
Select suppliers in the table and choose Request Quotes. IQS reviews your request and forwards it to every supplier you select.

Rotomold

2 sections

Rotomold is the word used in reference to rotational molder equipment or to the molded plastic products created by plastic rotational molding. Plastic rotational molding is one of many processes by which raw plastic materials are molded into usable products. The market for plastic products worldwide is very extensive. Plastics are used everywhere, and they are available in an enormous variety of shapes, sizes, and compositions.

Applications of Rotomold

Rotomold refers to the plastic products produced by plastic rotational molding, which are applied throughout industry as containers, equipment parts, light bulb coverings, and in many other applications. In commercial settings, furniture, floor mats, lamps, computers, baseboards, and storage racks can all be made of plastic or involve plastic components.

Consumers make extensive use of plastics in their homes as well. In order to create the wide variety of plastic products on the market, an equally wide variety of plastic formation methods are employed by plastic shaping operations. Rotomolding is among the methods of choice for creating hollow plastic products, like tanks and containers. Rotomolding can be used to create plastic products out of almost any raw plastic material, such as PVC, nylon, polycarbonate, high and low density polyethylene, and PET.

Manufacturing Process of Rotomold Products

Rotomoulding is similar to other plastic formation processes in that it involves the heating of raw plastic materials beyond their melting points in order to make them formable. Once heated beyond their melting points, certain plastics can be shaped, and, once cool, they retain their shape. Plastic extrusion, injection molding, and vacuum forming all involve melting thermoplastics in order to form them. Rotomolding involves the collection of raw plastic in a partially open mold. Once full, the mold is sealed and heated. When the plastic exceeds its melting point, it begins to take the shape of the mold. The mold is then rotated to distribute the plastic so that all of its contours will be covered.

By the end of the rotation, the plastic is evenly distributed over all of the surfaces of the mold. The mold is then cooled by water jets or another cooling method. The cooled plastic product can then be ejected from the mold and either prepared for shipment or sent for additional processing, like cutting or painting. From start to finish, the rotomold process takes anywhere from 15 to 90 minutes. It can be used to produce small products in large quantities or large products in small quantities. Rotomolding’s versatility is one of its most attractive qualities.

 


More Rotomold Information

 

 

Rotomold Informational Video