Abstract: This invention is related to the manufacturing process of a “DOOR” suitable to be used to obtain separate sections for places built in building and construction sector and known as a separation tool. The process comprises initially adding chemical adhesive, bonding substance and optionally chemical agents providing strength against high temperature, moisture and fire to the fibers produced from wood and other cellulosic materials and drying up to a certain degree of humidity, then pressing these fibers under vapor, temperature and pressure, subsequently obtaining a mainly homogenous (higher densities on the both surfaces due to the heat and pressure while pressing with molds which results in better paint applications as well as surface covering materials; such as pvc, folio, veneer, laminates, etc.