Rotational molders have a new supplier of resin grinding machinery: Powder King LLC.
Partners Jim Hummel and Bill Kapper have sold five pulverizers since forming the company earlier this year. Pulverizers use round disks, made up of special blades, to cut plastic pellets down into the powder needed for rotomolding.
Powder King is touting its disposable disks, which last four to five times longer than traditional disks and do not need to be returned for regrinding. The 20-inch disks are 30 percent larger than disks from competitors.
Kapper's machine shop, King Machine & Tool, manufactures Power King pulverizers in Massillon, Ohio.
Hummel is a veteran of rotomolding materials and equipment companies. His plastics career started in 1991 at Accurate Color and Accurate Compounding in Lodi, Ohio. Then he spent seven years as a sales executive at Reduction Engineering Inc., a pulverizer machinery maker in Kent, Ohio. For the past two years, Hummel has been at Mold In Graphic Systems in Clarkdale, Ariz.
Kapper said King Machine used to build pulverizers for Reduction Engineering under a private-labeling agreement, but that relationship ended when Reduction brought production in-house. King Machine does precision machining work for several markets, including aerospace, medical and food.
Hummel will remain in Arizona and be in charge of sales. Kapper heads up manufacturing.
The partners worked together to design the machine. They hold a patent on the design of the disposable disks, which Kapper said are machined from a proprietary material.
Other features include a cast-iron motor, an operator work platform and sensors that measure motor bearing temperature and mill rotation.
The standard machine is 181/2 feet high.
Hummel, in a late July telephone interview, said Powder King has sold two pulverizers to Iowa rotomolder Centro Inc., for delivery to Centro's plant in Claremont, N.C., this summer and fall. Hummel said his company also supplied Centro with a materials-handing system for the powder.
Powder King also sold one pulverizer to Return Polymers/RPG, a vinyl recycler in Ashland, Ohio.
Hummel declined to identify the buyers of the two other pulverizers.