An industrial fireproof and soundproof
metal composite door and a preparation method thereof, belonging to the field of door technology, the
metal composite door of the present invention is composed of a main door panel, an anticorrosion and heat insulation paint layer, a heat insulation and sound
insulation layer, a corrugated plate, a sound absorbing layer, an anticorrosion and heat insulation paint layer, and a secondary door panel in order from indoor to outdoor; wherein the anticorrosion and heat insulation paint layer, the heat insulation and sound
insulation layer, and the sound absorbing layer are prepared from special materials; the top and bottom ends of the main door panel are designed as inclined surfaces, and the inclined surface design of the main door panel makes the sound insulation effect less susceptible to the installation accuracy, allows a larger
installation error, has better fit with the door frame, has a larger fit area, is less likely to leak
smoke, and is less likely to leak sound. Each layer is used in combination according to a certain thickness and size, has excellent
fire resistance and heat insulation and sound insulation, has a long
fire resistance time, good tolerance, and especially has a very good low-
frequency sound insulation effect.