Abstract: The present invention provides a method and apparatus for the manufacture of generally rectangular plastic bags from a gusseted or flattened tubular, supply stock where the bags terminate in heat sealed closure at the bottom and the end opposite the bottom is generally open.

Abstract: The present invention provides a method and apparatus for comminuting selected plastic materials, where the apparatus can include a generally cylindrical receptacle means adapted to receive a selected quantity of a plastic material, to be comminuted where the receptacle has a generally vertical axis and an inlet and an outlet; cutter blade means disposed for rotation within said receptacle about an axis parallel to the vertical axis of the receptacle and in a generally horizontal plane, fixed cutter blade means carried on the sides of the receptacle means in spaced relation about the rotatable cutter blade means; fluid supply means to selectively supply a selected quantity of fluid to the receptacle; exhaust means for emission of vapor from the receptacle; lid means to selectively close a portion of the inlet to the receptacle; agitator means to selectively agitate a portion of the plastic materials received by the receptacle to urge the plastic material toward the cutter blade means; motive means for rotatin