Thermoplastic injection molding machines produce molded plastic components by changing plastic pellets into molten material, Bath Sheets injecting the molten plastic into a mold, and cooling the plastic material. One half is connected to a movable platen and the opposite is connected to a stationary platen. As the machine prepares to inject molten plastic into the mold, the platens shut and press the mold halves tightly together. When the plastic is cooled, the movable platen retracts, and the solidified plastic components are eliminated. The base supplies used for plastic injection molding generally are referred to as thermoplastic polymers.