Biomass and plastics are considered to be one of the most important renewable sources in nature. The typical composition of a tetrapak is 70% of cardboard (Kraft paper), 25% of low-density polyethylene (LDPE), and 5% of aluminum foil. In this paper, we present the heat rate effect on tetrapak pyrolysis using thermogravimetric TG analysis. Three heating rates (5°C/min; 10°C/min; 20°C/min) and three Nitrogen flow rates (20, 40, and 60 ml/ min) were used. The Tetra Pak is composed of 47.46% of carbon, 7% of hydrogen, and 0,325% of nitrogen. The derivative TG curves function of time and temperature for the different heating rates and Nitrogen flow rates were illustrated and discussed.