supporting layer are designed as a non woven knitted fabric comprising a stitched layer which binds all fibers and is made of flatly disposed stitches and a looped protruding pile layer stitched layers of heat insulating layer facing engine compartment and rear supporting layer define the outer surface of the material supporting layer is moulded by hot pressing to form a dimensionally stable moulded part application_number US 28465699 A description the invention relates to a material for sound absorbent and heat insulating lining of an automotive engine compartment the material is formed into a molded part and usable as a rigid wall element housing element or the like the material is mounted in the engine compartment of a motor vehicle and is intended to reduce sound and heat emissions as much as possible it is mounted on the firewall between the engine and passenger compartments and can also be mounted on the underside of the hood and can be used to encapsulate the engine the material must be sufficiently heat resistant to withstand the temperatures produced by the vehicle and also be nonflammable and have a surface that is water and oil shedding as well as resistant to dirt of course it also must have limited thermal conductivity and the ability to absorb considerable sound in practice glass fibers are added to the fleeces stabilized for the named purposes with phenolic resins with the hot front side being covered with a fleece of glass fibers the surface weight of the known motor compartment lining is considerable and the heat.