Abstract: A method for the production of a porous, sound- and heat-insulating shaped element, in particular for lining of sound- and/or heat-emitting vehicle components, by shaping and solidifying a bonded fiber fabric made of natural fibers mixed with a thermoplastic binder in a press mold. The binder is crosslinked uniformly in all regions of the porous shaped element to produce a shaped element featuring a formaldehyde emission of less than 2 ppm due to the replacement of conventional resins with the thermoplastic binder.

Abstract: A process which permits the production of mouldings which have little odor and comprise fibrous semifinished products to which heat-curing novolak resins have been added and which are suitable for lining heat-emitting and/or sound-emitting vehicle parts, in which their binders are completely and uniformly crosslinked. The odor emission, in particular the formaldehyde emission, is thus reduced. This process furthermore permits the production of products having an unusually large layer thickness. The homogeneous polymerisation reaction is achieved by the use of a hot fluid in the form of a dry, saturated steam and under elevated pressure.