Non-expanding wood fibre, chipboard, etc - panels used as form boards, roofing panels

摘要

The woodden parts and particles are impregnated with a suitable agent, e.g. Resistol R (RTM) to become water-repellent, before being glued and pressed. PRef. the panels are immersed in the impregnating agent or laminated on both sides with water-proof plastic panels or films.