Powder King LLC rolled out a laboratory-size pulverizer at the Society of Plastics Engineers' Rotational Molding By Design Conference.
Rotomolders use pulverizers to turn plastic resin into powder suitable for rotomolding. The PK-18 can mill small test samples, from 1-50 pounds' worth of powder. Powder King President Jim Hummel said a technician can test materials and change colors in less than 10 minutes - compared to hours for cleanup between batches on traditional, large pulverizers.
Hummel claimed the PK-18 is the first pulverizing mill ever designed specifically for lab and small-sample applications.
Hummel explained features of the PK-18 at Powder King's tabletop booth at the Cleveland conference, held June 6-8.
The simple design uses a single mill with an 8-inch disk. Features include a vibratory feeder, and variable-speed drive. The flywheel has special fins that act as a mini-impeller, increasing air movement to cool the grinding operation.
Gap adjustment is done from outside the mill, using easy-to-reach bolts.
Powder King also offers large-scale pulverizers and material-handling systems for rotomolding. The pulverizers are built in Massillon, Ohio, at King Machine & Tool. Powder King is in Anthem, Ariz.