Method for producing sound insulating pad under automotive carpet

Abstract

The invention relates to a method for producing a sound insulating pad under an automotive carpet and belongs to the technical field of automotive interior parts. The sound insulating pad under the carpet is manufactured by using an elastic layer formed by PET (polyethylene terephthalate) fibers, low melting point fibers, cotton and PU (Poly Urethane) and a middle channel heavy coating formed by EPDM (Ethylene-Propylene-Diene Monomer). The product prepared by the method can reach equal density and unequal thicknesses and is greatly improved on the aspects of reducing the gram weight and insulating sound; the product adopts the forming flow production; excess materials of the product can be recycled, so that the manufacturing cost and the material cost are saved; in the whole production process of the product, no harmful substance is generated; the sound insulating pad under the automotive carpet belongs to an environment-friendly product.

Description

technical field

[0001] The invention relates to a production method of a sound-insulating pad under an automobile carpet, specifically, it is used for installing under the main carpet of the passenger compartment of the automobile and above the sheet metal of the chassis; it can reduce the noise introduced into the automobile, and belongs to the automobile interior decoration technology field. Background technique

[0002] Automotive interior parts are generally installed inside the car body to play the role of beautification, protection, and sound insulation and sound absorption. In the era of more and more pursuit of high performance, environmental protection, energy saving, lightweight, and individualization, the exterior decoration of automobiles, like the performance of automobiles, has attracted more and more attention from people. Therefore, the requirements for automotive interior parts are getting higher and higher. In the prior art, performance indicators such as...