From initial concept to final pack-out

PolyFlex brings your product home

Blowmolding professionals for more than 45 years

Locally owned and operated in Walworth, Wisconsin since 1973, we are one of the world's largest blow-molding manufacturers, specializing in large part blow-molded products. Combining the most advanced technology in the industry, four decades of engineering and quality control experience, and one of the most complete selections of large and small part machines, we are the turnkey blowmolding solution for some of the most demanding plastics projects in the world.

With our experience, commitment to quality, and value-added support, we will help you design, engineer, and produce products in any market.

Give us a call at +1 (877) 765-9353 or drop us an email to find out how we can help you make a turn-key product, from concept all the way through final production.

We make the best blowmolded wheel on the planet

Our blowmolded wheels are 100% warrantied for 10 years, including our patented the Snap-on system and Ultra-capped wheels.

We can custom tailor any of our wheel designs to fit your specific requirements. Our designs scale from four to twelve-inch diameters.

Looking for a few extras? Our retail partner has you covered.

All US-made machines, ranging from 5 to 75 pound

In-house, on-site mold design and modification

Swift and safe mold changes via Cranes

In-house robotics and special features

Color and fixture capable

Multiple state-of-the-art facilities

Quality is the foundation of PolyFlex's Culture

At Poly-Flex, we believe that quality needs to be built into every step of the blowmolding process. We continually improve the methods used to process your products by utilizing the latest technology.

Quality control is ingrained in our culture and every member of the team, involving everyone from the machine operators to shift supervisors. Your product goes through rigorous testing for appearance, structure, and weight so you and your customers receive the best possible product.

Our team continually tests every piece of machinery, blenders, and all secondary equipment around the clock to be absolutely finished goods are within your set specifications.

All of our materials are tested before use, to ensure the plastic used your blowmolded product is of the highest standard.



ISO Compliant

Product-Specific Quality Logs

Ultrasonic Testing

Color Spectrum Testing

Raw Material Melt Indexing

Accurate Material Blenders

We do it all.

Product Design

Mold Design

Research and Development

Secondary Fixtures


Point of Purchase Packaging and Pack Out

With well over 100 years of blowmolding experience, our design team will take your idea from concept to reality. Working closely with our customers to identify all of their needs, we have created products with the superior strength and cost-effective results blow-molding offers since 1973.