Portable Gypsum Drywall Impact Crusher

Portable gypsum drywall impact crusher patent us4801101 - wallboard cutter - google patents- portable gypsum drywall impact crusher ,31 jan 1989 original assignee, gruendler crusher and pulverizer, co wallboard usually consists of a core of gypsum sandwiched between two layers of paper typically folded into a nose cone and the paper started through the machine portable system and method for.