Polymermateriale i et böjeligt folie til opspændte strukturer, fremgangsmåde til fremstilling af materialet og forsænket loft omfattende materialet

摘要

A flexible sheet material of thickness less than half a millimeter for making tensioned structures such as false ceilings, in particular, the material including microprojections formed by displacing the material from which it is made, said material presenting an acoustic absorption coefficient which is higher than that of the same material without said projections.