FLAME RETARDED SHEET FOR FLEXIBLE DUCT AND METHOD FOR MAKING THE FLEXIBLE DUCT USING THE SAME SHEET

摘要

Meanwhile, the present invention is flexible Flexible duct having sufficient strength , refractive , and , securing a flame retardant and its purpose is to provide a flame-retardant sheet of Flexible duct to enable an object of the present invention , a spring coil is attached to the Flexible duct manufacturing , the fabric layer (2) forming the intermediate layer to the base , the fabric layer (2) a synthetic resin and a film layer (4a, 4b) formed on the flexibility of the synthetic resin film layer (4a, 4b) formed on the aluminum thin film layer of the flame retardant (6a, 6b) is centered on the fabric layer (2) phase , form a symmetrical and is implemented through the provision of flame-retardant Flexible ducts formed of laminated sheets .