the invention relates to a chemical apparatus that produces solid - state polymerization , with heat exchanger for reaction chamber or reactants located therein . the apparatus recycles waste pet bottles and produce high quality pet pellets essentially free of contamination . the apparatus comprises an insulated housing or frame to receive small amounts of empty single serve plastic water bottles , with a movable lid to allow insertion of the bottles . the bottles are heated to the melting point , and a slow velocity fan on top of the lid to distribute heat inside the reactor . the tray inside the lower housing has cavities to hold the bottles , and several oval shaped molds at a lower level to receive the melt by gravity . these molds allow stationary cooling of the melted polymer , where it solidifies forming robust crystallized pellets . the apparatus relates to a countertop appliance intended for domestic use .