Seamless closed high-flame-retardant fireproof door

• Main Author: YU WENGUO
• Format: Patent
• Language: Chinese; English
• Published: 19.11.2021
• Subjects: DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; FIXED CONSTRUCTIONS; FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES,FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS,BLINDS, GATES; LADDERS

The utility model discloses a seamless closed high flame retardant fireproof door which comprises a front side plate, a rear side plate and a core plate, the front side plate comprises an outer shell and an inner shell, the inner shell is fixed in an inner cavity of the outer shell, the outer shell and the inner shell are both closed steel shells, and the inner cavity of the outer shell and the inner cavity of the inner shell are filled with carbon dioxide air layers; the core plate comprises a glass fiber heat insulation sleeve, an inner cavity of the glass fiber heat insulation sleeve is filled with an aerogel felt layer, the outer wall of the core plate is wrapped with a layer of steel sleeve, the steel sleeve is fixedly connected between the front side plate and the rear side plate, and the steel sleeve is arranged in a sealed mode. The carbon dioxide air layer has a good heat insulation effect, and the heat insulation performance is greatly improved through the arrangement of the double-layer shell and t