Choosing the right plastic resin for your rotationally molded product is very important. The plastic resin should be selected based on the intended application of the product and to withstand the various conditions the part will be exposed to. Some applications require a specialized resin which is of a higher cost. However for most applications a lower cost commodity grade of Polyethylene is optimal.
Types of Resins for Rotational Molding
- Linear Low Density Polyethylene (LLDPE)
- Medium Density Polyethylene (MDPE)
- High Density Polyethylene (HDPE)
- Cross-Linked Polyethylene (XLPE)
- Post Industrial Regrind (PIR) (Recycled)
Rotational molding uses a range of resins with diverse physical properties. Depending on the product application Roto Dynamics will work with experts from Chevron, Exxon or LyondellBasell to provide a resin grade that meets your needs and expectations.
Most Commonly Used Rotomolding Resin
The most commonly used rotomolding resin is polyethylene however for some applications a more specialty grade of resin is required. For example, medical device components and potable water storage tanks use a range of food grade resins. For aerospace parts, a resin with a V-0 or V-2 fire retardant rating is specified and for outdoor product which are exposed to sunlight, a rotational molding resin with a good UV stabilizing package.
Specialty resin options include:
- Polyurethane (double skin)
- Polyvinyl Chloride (PVC)
There is a large selection of colors to choose from. Our high intensity mixing equipment provides us with the capability to mix large quantities of custom colored resins.
For more information about what resins we can process your product with contact us or request a quote today. At Roto Dynamics we manufacture all the products here in the California, USA.
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See Also: Seven Types of Plastic and Their Use in Rotational Molding