method for the manufacture of a highly heat resistant sound absorbing and insulating material; and method for noise reduction of a noise generating device

摘要

method for the manufacture of a highly heat resistant sound absorbing and insulating material; and Method for Noise Reduction of a Noise Generating Device The present invention relates to a method for the manufacture of a highly heat resistant sound absorbing and insulating material, more specifically to a method including a beating step and mixing, a net forming step, a net stacking step, a needle piercing step, a binder impregnation step and a solvent recovery step. The highly heat-resistant insulating and sound-absorbing material fabricated by the method according to the present invention may be installed closer to the noise source of a mechanism or exhaust system to reduce radiated noise from the engine or exhaust system thereby improving tranquility within a vehicle and can be applied to a location adjacent to a metal part that is at a temperature of 200 ° C or higher to perform the thermal insulation function thereby protecting nearby plastic and rubber parts.