the invention concerns itself with an apparatus and method for producing plastic slivers from plastic infeed stock . the splinters produced are especially suitable for use in plastic or cellulosic / plastic composites . the invention will readily accommodate a broad range of types and forms of plastic infeed stock , including waste plastic , whether or not it has been cleaned and sorted into homogeneous feed streams . the method cuts plastic into slivers by firmly holding the plastic infeed stock and slowly feeding it against rotating cutter heads . the feed mechanism automatically adjusts to varying amounts of feed stock . the slivers need no further processing before they can be used in composites .