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Plastic Rotational Molding Manufacturers and Companies

IQS Directory is a top industrial directory listing of leading industrial plastic rotational molding companies and suppliers. Access our comprehensive index to review and source plastic rotational molding companies with preview ads and detailed product descriptions. These plastic rotational molding companies can design, engineer and manufacture plastic rotational moldings to your specifications and application need. A quick and easy to use request for quote form is provided for you to contact these plastic rotational molding manufacturers and suppliers. Each company has detailed profile information, locations, phone number, website links, product videos and product information defined. Read customer reviews and product specific news articles. We are the right resource for your information requirement whether its for a manufacturer of rotomolding, GVL polymers, ISO rotational mouldings.

  • Orange, CA 877-768-6585

    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!

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  • Rochester, IN 800-354-4534

    Topp Industries is a world-leader in rotationally molded plastics including plastic storage tanks and double-wall tanks. We offer a number of rotomolded poly basins and containers, as well as offering state-of-the-art custom rotomolding services. We believe in producing working solutions that make sense and make a difference for now and for the future. Visit our website for a full list of products and services.

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  • Elberfeld, IN 800-304-4600

    We 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!

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  • Pearland, TX 281-648-0909

    At Sherman Roto, we work with a variety of plastic types. We are committed to bringing you the highest quality plastic rotational molded products. With a variety of custom options to choose from like color, graphics, double walling, metal inserts, flame polishing and fitting, you are sure to find just what you need.

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  • Lake City, PA 814-774-2500

    Sterling Technologies manufactures a diversity of rotational molded products. Our affordable components are strong, durable, and have a high impact tolerance. We serve a multitude of industries such as warehouse, produce & food processing, paper, electronics, aerospace, and many more. Contact us today and tell us what we can do for you!

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The CLEAN 2015 show was a huge success for the Fibertech brand. This year was the first time Fibertech has exhibited at the CLEAN show in Atlanta; our expectations were exceeded. The opportunity to meet with our customers first hand and give them the ability to put their eyes and hands on our product is vital to our success. Customer reaction to our product line was positive and there seemed to be a significant interest in our customization capabilities. I have always thought that this industry requires that you put... Read More

businessIndustry Information

Plastic Rotational Molding

Plastic rotational molding is a type of forming method that is used to create hollow thermoplastic products. Using a revolving metal mold, roto molding machines produce products that are uniform in wall thickness, seamless and of a single construction. They are valued for these qualities and for the savings they offer via the elimination of the costs of additional fabrication processes and replacement parts. Plastic rotational molding is used to make all sorts of products used in diverse industries, such as agriculture, chemical processing, construction, food and beverage processing, furniture, marine manufacturing, material handling, packaging and assembly, pharmaceuticals, plumbing, recreation and sporting goods, toy manufacturing and waste water management. Some examples of the plastic products that can be fabricated via rotomolding include footballs, helmets, kayaks, outdoor planters, plastic tanks, playground slides, pipe fittings and safety cones.

Before doing anything else in the rotomolding process, manufacturers must fabricate a mold that fits the dimension specifications of the part to be created. Typically, they use stainless steel or aluminum. To create a non-uniform wall thickness, they can use a combination of both metal materials. For complex designs and constructions, they will do so using the die casting process. For less complex designs, on the other hand, they can simply weld the mold. Either way, once a mold is created, manufacturers mount it onto a rotating spindle, which revolves on either one or two axes. When the mold and spindles are assembled, manufacturers pour powdered, raw metal stock onto the mold. From here, the mold is transferred into an oven chamber, where it continuously revolves as the metal powder melts and evenly coats the mold walls. Once the metal has completely covered the mold, the mold is transferred to a cooling chamber, where a combination of air and cold water cool and cure the molten plastic. This portion of the molding process generally takes around 20 minutes to complete. After the plastic has dried completely, it is removed from the mold. This is typically done manually, and can sometimes prove difficult, as the plastic can shrink during the process. Either way, once off the mold, the new hollow plastic part can either be sent on for shipping or sent on for further processing. Common processing procedures they undergo include cutting to size, welding with small components, painting, polishing and cleaning.

There are a lot of different machines that can be used to perform plastic rotational molding. These include: rock and roll machines, clamshell machines, shuttle machines, vertical or up and over machines, carousel machines and swing arm machines. Rock and roll machines are specially designed with small heating chambers to create long, narrow parts. Clamshell machines are actually a type of rock and roll machine, though they distinguish themselves by their use of a single primary rotational arm (not counting the usually support arms they have on their ends.) Most other plastic rotational molding machines use at least two arms. Shuttle machines typically have two arms that work independently, moving the mold back and forth in between the heater and the cooler as it turns biaxially. Some shuttle machines do, however, have only one arm. In this case, the arm moves the mold horizontally from the heater to the cooler as it spins. Vertical rotational machines are smaller than most other rotomolding machines; they are considered small to medium in size. They are valued for their energy efficiency, which is born out of their compact heating and cooling chambers. Next, carousel machines are one of the most common used rotational molding machines. Carousel machines may have up to four arms and six stations, and they come as either fixed or independent equipment. Typically, fixed arm carousel machines consist of three arms that are required to move together, while independent arm carousel machines have between three and four arms, all which move separately from one another. Both types of carousel machines are available in a wide variety of sizes. Finally, swing arm machines can have up to four arms, all of which move bi-axially. The arms, which do not all have to be engaged at the same, are mounted on the respective corners of the machine, where they swing in and out of the oven.

Plastic rotational molding tends to be engaged less commonly than forming methods like thermoforming, blow molding, or injection molding because the machinery needed is somewhat large and initially expensive. However, it does offer many benefits that make it a viable option. For example, it creates seamless products. It also creates products with highly uniform wall thicknesses. Furthermore, their products can be imbued with enhanced qualities through the inclusion of additives in the thermoplastic material. Find out more by contacting an experienced manufacturer today.

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Plastic Rotational Molding Informational Video