Poly(vinyl chloride) (PVC) products are very convenient for reclaiming and recycling. Therefore, the heat impact at 160-180 degrees C temperature during the recycling process was investigated in the current study by means of spectroscopic studies, such as infrared and ultraviolet, and of differential scanning calorimetry curves. The bottle samples are slightly and considerably affected at 160 and 180 degrees C heat treatments, respectively, which were determined as the formed decomposition products, color change, loss of volatile components, and peroxide formation in air. However, since this decomposition occurred at 30 min of experimental time, which is about sixfold that of real process times, the reclaimed material making up the lost or consumed component makes possible the use of this material in the production of window sections, profiles, pipes, and even bottles.