Rotomolded Plastic Parts vs. Metal Parts

Rotomolded Plastic Parts | polypropylene rotational molding
Rotomolded Plastic Parts | polypropylene rotational molding

Rotomolded plastic parts can replace metal components in many applications. Plastics generally cost less than metals, but engineers can’t base their design decisions on material costs alone. Cost reduction is important, of course, but rotational molding offers other advantages, too. That’s why Gregstrom Corporation, a Made in the USA rotomolder with over 70 years of manufacturing experience, can help you to replace your metal parts with plastic products.

Rotomolded Plastic Parts: Cost Reduction Meets Design Freedom

According to the American Society of Mechanical Engineers (ASME), companies can expect to save 25% to 50% by using plastic parts instead of metal ones. For engineers, the benefits include greater design freedom, especially with regard to material selection and part geometries. Moving from metal to plastic can also support the creation of more complex shapes.

At Gregstrom, engineers can choose rotational molding materials such as linear low-density polyethylene (LLDPE), high-density polyethylene (HDPE), and polypropylene (PP). Rotomolding with static-dissipative polyethylene (PE) is also available, and is recommended for some electrical and electronics applications. Compared to many type of metals, roto molding supports faster cycle times and reduced production costs.

Rotomolded Plastic Parts: More Advantages

Rotomolded plastic parts aren’t just cost-effective. They’re also strong and lightweight, which makes them a good choice for automotive, aerospace, and industrial applications. As Machine Design explains, plastic parts also last longer, resist corrosion, and have lower packaging and shipping costs. They support predictable, repeatable manufacturing and can meet various regulatory requirements, too.

As a parts manufacturing method, rotational molding offers incredible versatility. At Gregstrom, our Ferry Rotospeed RS-220 and RS2-3300 machines can produce plastic products in a wide range of shapes and sizes. Examples include intricate spray manifolds, shopping cart parts, and small boats. Our high-intensity mixer also provides a better blending of pigment that improves physical properties.

Choose Rotomolded Plastic Parts from Gregstrom

Are you thinking about using plastic instead of metal for parts or products like bins, pallets, parts washers, ventilation ducts, mufflers, manifolds, or water treatment tanks? The portfolio section of our website demonstrates Gregstrom’s capabilities in these and other areas. Featured projects such as a Heineken draught keg cooler and chlorine chemical feeder also show our rotational molding capabilities.

Are you ready to request a quote, or would you like to get more information about the advantages of rotational molding? At Gregstrom, our services also include design assistance, assembly and testing, CNC and robotic routing, plastic finishing, and quality assurance. To learn more, contact us at our Made in America manufacturing facility in Woburn, Massachusetts (USA).