Rotomolded products require no assembly and have even, smooth walls every time. Rotational moulding is an inexpensive process that fabricates high quality and durable products, but works slowly in small runs. Read More…
Leading Manufacturers
Roto Dynamics Inc.
Orange, CA | 877-768-6585As 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!

Sherman Roto Tank
Pearland, TX | 281-648-0909We 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.

Western Industries Plastic Products LLC
Winfield, KS | 620-221-9464Western Industries Plastic Products, LLC, specializes in large-part plastic blow molding. We provide expertise and services in product design, process improvement, and product assemblies. We offer our customers comprehensive services and turnkey opportunities to achieve their specific project goals. We can assist with: R&D, product design, product improvement, and secondary-fixture design. For all your product needs, be sure to contact us for a quote today!

Fibertech Plastics
Elberfeld, IN | 800-304-4600We provide outstanding custom plastic rotational molding. Our teams offer short lead times and we will assist you from concept to production. All of our materials and designs are FDA approved and we can handle the most complex projects. We are your one stop shop for all of your rotational molding needs. Give us a call today to learn more information!

Redline Plastics
Manitowoc, WI | 920-645-0461Trust Redline Plastics for all your plastics production needs. Rotational molding of parts up to 181 inches, vacuum/thermoforming of parts up to 120 in, and industrial cut-and-sew all under one roof! Our experienced team can handle your product development, engineering, and prototyping; provide quality on-time production of runs large or small; and value-add through assembly, packaging, and shipping.

Texas Rotomold
Houston, TX | 346-406-8158Texas Rotomold is a superior manufacturer of rotationally molded plastics. With many years of experience, we can efficiently serve our customers at competitive prices. Our main focus has always been to provide our customers with high-quality products with the exact specifications for their needs.

Revolv Manufacturing
Brainerd, MN | 218-824-2025Revolv manufacturing specializes in the design and manufacturing of rotationally molded plastic. Since 1995, we have been producing high-quality rotationally molded plastic products. We offer our customers unrivaled customer service and high-quality products.

RotoMold USA
Claremore, OK | 346-406-8158Need a custom rotationally molded plastic product? RotoMold USA produces items via rotational molding and performs product design, assists with mold manufacturing and mold maintenance, does quality testing and other services. We’ve done rotomolding for gas and oil, water recreation plus airline industries.

Rotomolded products are found in many different industries including: the sporting goods, marine, materials handling, packaging, office, school, recreation, toy manufacturing, medical, construction, plumbing, agricultural, automotive, promotional/display, road safety and furniture industries. Many different containers are rotomolded, including plastic tanks, cases, packaging containers, bins and trash cans. Other products include doll parts, lawn ornaments, road cones, kayaks, playground slides, outdoor chairs, footballs, sleds, pipe fittings, hoppers and plastic planters.
These products are usually medium to medium-large in size, but cannot exceed 20 feet because of machinery constraints. They are sometimes multi-wall, often hollow, and the resin can contain additives for moisture protection, flame retardancy, static elimination, color and texture. The rotational molding process is simple, but requires huge, expensive machinery that uses lots of space and needs a fully insulated walk-in oven. Specialty or stock molds are fabricated by welding or die casting and then attached to a massive, round revolver that spins and revolves on two axes simultaneously.
Fine grain plastic resin powder is dumped inside the mold, which is then closed. Multiple products may be formed at one time, regardless of their shape or size difference. Each machine has two to four revolvers that hold molds. The revolvers are either enclosed in an oven or travel to a heated environment, where the process begins. They operate slowly under low pressure and high heat. Inside the molds, the plastic powder becomes molten and smoothly and evenly coats the interior walls.
They are then transferred to a cooling station, where they continue to rotate and are exposed to cold water and air for about 20 minutes in order to cure. Next, the newly formed product is manually removed from the mold, which can be a difficult process. Some products need further finishing, like welding, where parts are attached, or cutting, to add openings and holes. After the plastic has been cleaned and polished, it is ready to be shipped.