Gregstrom uses rotational molding to make plastic fuel tanks that weigh less than metal ones. Rotational molding, or rotomolding as it’s sometimes called, is a plastics manufacturing process that uses less expensive tooling than injection molding. Rotomolding also offers greater design freedom, and it creates strong, hollow parts without introducing internal stresses that can cause tank failure.
If you’re designing a fuel tank, have you considered rotational molding instead of other plastics processes? Along with design freedom, rotomolded tanks are known for their durability, seamless construction, and corrosion resistance. Keep reading to learn more and contact us if you’re ready for a quote from a Made in USA manufacturer of plastic fuel tanks.
Design Flexibility and Rotational Molding
Rotational molding supports plastic fuel tank designs in a variety of shapes and sizes. That’s important because these parts are installed and used in different and demanding applications. Rotomolded polyethylene is often used for gasoline storage because of its chemical resistance.
Plastic Fuel Tanks vs. Metal Fuel Tanks
Metals are usually stronger and more rigid than plastics; however, they’re susceptible to denting and deformation. High-density polyethylene (HDPE) is a rotomolded plastic that combines high tensile strength and good impact resistance. In addition to gasoline, it withstands diesel fuel and kerosene.
Seamless Fuel Tanks Won’t Crack or Leak
Most metal fuel tanks are made by welding together sheets of stamped metal. Unfortunately, this creates a seam that can crack and leak over time. Rotomolding doesn’t produce seams like this, and plastic fuel tanks can include metal components that are molded-in.
Corrosion Resistant Rotomolding Materials
Unlike metals, most plastics won’t corrode. This makes them a good choice for environments where there’s exposure to salt or moisture. HDPE provides excellent corrosion resistance, but polypropylene (PP) – another rotomolding material – also resists corrosion.
Ask Gregstrom to Make Your Plastic Fuel Tanks
Gregstrom is a rotational molder with 75+ years of plastics manufacturing experience and value-added services that include design assistance, tooling, and plastic finishing. For plastic fuel tanks and other rotationally molded products, we’re the Made in USA manufacturer that does more. Contact us for a quote.
