Application method of novel recovered material of automobile engine bottom protection plate

The invention discloses an application method of a novel recovered material of an automobile engine bottom protection plate. In order to solve the problems of high cost and poor sound-insulating effect of similar products in the prior art, the application method of the novel recovered material of the automobile engine bottom protection plate comprises the following steps: 1) classifying a recycled felt material and a glass fiber reinforced PP material; 2) crushing the recycled felt material into recycled felt grains and preparing the glass fiber reinforced PP material into a glass fiber reinforced PP fiber; 3) garnetting, loosening and purifying the glass fiber reinforced PP fiber acquired in the step 2); 4) placing the recycled felt grains and the glass fiber reinforced PP fiber between two layers of non-woven fabrics, thereby acquiring a compound felt; 5) heating the compound felt, needling, compounding, and then putting into a cold mold for forming and punching. According to the method, the intrinsic prope