As explained by LearnMech in the article “Rotational Molding – Working Principle, Application, Advantages”, rotational molding is a highly efficient plastic forming process used to create hollow parts by rotating a heated mold filled with polymer powder on two axes.
Also known as rotomolding, this method is known for producing seamless, stress-free parts with uniform wall thickness. The process begins by loading plastic powder—typically polyethylene—into a split mold. The mold is then heated inside an oven while rotating biaxially. As the mold rotates, the powder melts and evenly coats the interior walls, forming a consistent layer.
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