METHOD FOR PRODUCING FLAME RETARDANT LOESS SHEET, AND FIRE DOOR HAVING FLAME RETARDANT LOESS SHEET ADHERED THERETO

摘要

The present invention provides a method for producing a flame retardant loess sheet and a fire door to which a loess sheet having flame retardance is adhered. As a means for solving such a problem, the present invention provides a flame retardant loess sheet. A flame retardant mixing material which is obtained by mixing a liquid flame retardant agent with loess, calcium carbonate, and a synthetic resin, is obtained, and a flame retardant mixed chip is obtained by injecting the flame retardant mixed material into an extruder to be radiated, cooled, and cut through a spinning nozzle. The mixed chip is re-injected into a molding device, and is extruded and molded into a sheet shape through a molding nozzle. At the same time, a film is adhered on one side surface thereof, and the mixed chip is cut to a standard size. The flame retardant loess sheet is used as an indoor finishing material of a building, or a fire door is produced by using the same. When a fire door is produced, a corrugated cardboard is cut to form a fire door body, and a reinforcement piece is adhered and fixed to the edge of the fire door body. In such a state, a transparent film and a loess sheet having flame retardance are adhered on the surface of the fire door body.;COPYRIGHT KIPO 2017