초록 ▼

The present invention provides a fire retardant noise absorbing material, with excellent water proof properties, fire resistance, noise absorption, and improved tear resistance if necessary, and a method of producing the same efficiently in a short time in a simple and easy manner. The fire retardan

The present invention provides a fire retardant noise absorbing material, with excellent water proof properties, fire resistance, noise absorption, and improved tear resistance if necessary, and a method of producing the same efficiently in a short time in a simple and easy manner. The fire retardant noise absorbing material having gas permeability of a section of 10 mm in thickness from a surface of the film layer in the range of 5 to 80 ml/cm.sup.2.sec, is produced following the steps of; superposing a polyester film or a polyethylene film onto fire retardant soft urethane foam; laminating a sheet of mold releasing paper thereon; heating the paper while pressure is applied thereto from the surface of the paper by means of a hot plate to affix the film layer on the fire retardant soft urethane foam by hot melting; removing the laminated material from the hot plate in a heated condition; and separating the mold releasing paper from the laminated material after the film has solidified. According to necessity, a resin fabric such as a nylon fabric is further laminated onto the film layer.

대표청구항 ▼

[ What is claimed is:] [1.] A fire retardant noise absorbing material comprising a fire retedardant soft urethane foam and a polyester film layer or a polyethylene film layer laminated by hot melting onto side of the urethane foam without a use of a hot-melt adhesive, wherein the gas permeability of

[ What is claimed is:] [1.] A fire retardant noise absorbing material comprising a fire retedardant soft urethane foam and a polyester film layer or a polyethylene film layer laminated by hot melting onto side of the urethane foam without a use of a hot-melt adhesive, wherein the gas permeability of a section of 10 mm in thickness from a surface of the film layer of the noise absorbing material is in the range of 9.5 to 25 ml/cm.sup.2 .multidot.sec.