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Midwest Rotational Molder LLC is an experienced and low cost custom molder headquartered in Northern Indiana.

MRM is committed to the highest level of quality, plus first class customer service.

MRM is dedicated to providing eco-friendly products at competitive prices, using recycled plastics whenever applicable.


The Rotational Molding Process

The roto-molding process begins when plastic resin is placed into a hollow steel or aluminum mold.  It is then placed into an oven and rotated on two axes at a low speed.  As the material heats, the resin starts to adhere to the mold’s inner surface and the part continues to form until all of the resin is completely fused.  The mold is then cooled by air or water, or both, until the mold returns to standard temperature. The mold is then opened and the part is removed.