Thermoplastic waste converter

Claim 1

In an apparatus for converting thermoplastic foil material into granulated thermoplastic, including: a. a cylindrical container having a top and a bottom; b. motor means mounted below said bottom for rotating a shaft extending through said bottom and disposed substantially axially of said cylindrical container; c. a plurality of circumferentially spaced fixed blades mounted at the wall of said cylinder and projecting radially inwardly and above the bottom of said cylinder, the improvement comprising: a rotatable blade member mounted on the shaft of said motor and extending diametrically of said cylinder below said fixed blades, said rotatable blade member having sharpened leading cutting edges on opposite sides of said shaft for cutting thermoplastic material in said cylinder and said sharpened leading edge being inclined with respect to the center line of said blade member; said rotatable blade also having a sharpened cutting edge extending along each end of said blade member and tapered outwardly and rearwardly of said leading cutting edge; and said rotatable blade further having a plurality of bars mounted on an upper surface of said blade member, each of said bars extending from a position adjacent an end of said blade member to a position adjacent said shaft.