Fire retardant noise absorbing material and method of producing

Details Fire retardant noise absorbing material and method of producing Fire retardant noise absorbing material and method of producing

1998-01-28

2000-05-23

Copenheaver, Blaine

Fabric (woven, knitted, or nonwoven textile or cloth, etc.)

Woven fabric

Including a foamed layer or component

156 77, 156247, 1563096, 4283197, 4283199, 442370, B32B 326, B32B 524, B32B 3120

Patent

active

060665807

ABSTRACT:
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.

REFERENCES:
patent: 3940468 (1976-02-01), Tunstall
patent: 4671992 (1987-06-01), Lancaster et al.
patent: 4948648 (1990-08-01), Dadgar et al.
patent: 5560967 (1996-10-01), Isaksen

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