Perlite is a naturally occurring volcanic glass that is often used as a filler material in rotational molding processes. It can offer various benefits when incorporated into the rotational molding process, leading to improved properties and characteristics of the final plastic products

Perlite can reduce shrinkage and warping during the cooling phase of rotational molding, leading to improved dimensional stability in the final plastic products.

By adding perlite as a filler, manufacturers can reduce the amount of expensive plastic resin required for molding, leading to cost savings in materials. Perlite is a naturally occurring material, and its use in rotational molding can reduce the environmental impact by reducing the need for virgin plastic resin.