Frequently Asked Questions

How can I contact someone to make my part?

You can locate a rotomolder by searching our online Membership Directory. Or, you can post an inquiry with your contact information and a brief description of the part you want to manufacture. We will distribute your information to our members who can then contact you to discuss the project.

How do I find a supplier of molds, resins, machines, etc?

You can locate a supplier by searching our online Membership Directory.

I need someone to design my part. Who can I contact?

You can contact a designer member using the online Membership Directory.

Why would I choose rotomolding over other processes?

There are many advantages to rotomolding. Tooling cost is much lower, which often makes rotomolding a more cost effective method, especially for smaller quantities. The process has virtually no size limitations and parts are produced with an even wall thickness, even at the corners. Complex shapes with molded in handles, graphics, threads, and inserts can all be part of the design, saving you time and money by eliminating secondary operations.

Rotomolding produces hollow tanks, right?

Rotomolding has come a long way from primarily producing tanks. Tanks are only one example of the products being produced today. Rotomolded parts are found in industries ranging from recreational to medical to automotive. See our Design Applications for a quick look at some amazing parts.

Where can I get answers to technical questions?

ARM members can search the iLibrary for technical papers and presentations from the last 20+ years. If you are a nonmember, you can post your question on our LinkedIn page or on Polysort's rotomolding discussion board.

What materials are used in rotomolding?

The primary material used in rotomolding is polyethylene. However, a variety of other materials can be rotomolded, including PVC, nylon, polypropylene, cross-linked polyethylene, metallocene polyethylene and plastisols.

How do I learn more about rotomolding?

You can purchase educational materials through our Online Book Store. ARM also offers a variety of meetings and seminars throughout the year. Check out the Events page for details.

How much does it cost to join ARM?

Dues depend on the annual sales volume and type of company applying for membership. ARM offers corporate membership, so once your company becomes a member, all of your employees can participate in member activities and benefits. Dues range from $670 to $4,060 per year. The current membership categories are Rotomolder, Supplier, Designer, Consultant and Educator/Student. Visit our Membership page for complete details on dues as well as an online application

What are the benefits of joining ARM?

Benefits include full access to educational materials, discounted registration for seminars and conventions, sales/marketing and technical assistance, a complimentary subscription to the industry's technical magazine, research and development and peer networking opportunities.

Post an inquiry

Have a sales lead, job posting or question? Post an inquiry and get a response directly from ARM members.

Member Search

Find ARM member companies, their products and services, location and contact information.

Get In Touch

Association of Rotational Molders
800 Roosevelt Rd, Suite C-312
Glen Ellyn, Illinois 60137 USA

Phone: 630.942.6589
Fax: 630.790.3095