Gregstrom Corporation

Gregstrom is a rotomolded boat manufacturer with 75+ years of Made in USA plastics manufacturing experience. If you’re a U.S. company that’s concerned...

Molded-in threads in rotational molding provide a cost-effective way to assemble plastic products like water tanks. They eliminate the need for second...

Spin welding is a leak-free welding technique for adding permanent fittings and ports to rotomolded tanks. First, a hole is drilled in the thermoplast...

Corner angles in rotational molding refer to the rounded edges at the corners of molded parts. Designers apply a radius, or curvature, to part corners...

Learn about minimum wall separation in rotational molding, a plastics manufacturing process for strong, hollow parts.   Rotational molding can produce...