Preparation method of automobile dash sound insulation pad

Abstract

The invention discloses a preparation method of an automobile dash sound insulation pad, wherein the preparation method comprises the steps: S1, material cutting: firstly selecting a cotton felt, a PU foam board and a sound insulation cotton board with proper sizes, then preparing a mold plate of an automobile dash board, putting the cotton felt, the PU foam board and the sound insulation cotton board on the mold plate, and cutting according to the shape of the mold plate. The invention relates to the technical field of sound insulation of automobile dash boards. In conclusion, according to the preparation method of the automobile dash sound insulation pad, through the working procedures from S1 to S4, the cotton felt and the sound insulation cotton plate are bonded through an adhesive, silicon-coated protective paper and a adhesive sticker, so that the cotton felt can be easily taken down, the disassembly difficulty is greatly reduced, the disassembly efficiency is improved, and the replacement cost is low due to the fact that the cost of the cotton felt is low; and finally, a side edge of a final cut edge is wrapped with an adhesive tape, the cut edge is prevented from being polluted, the side edge is wrapped and limited, and the situation that the use quality of the whole connection is affected due to damage of the side edge is avoided.

Description

technical field [0001] The invention relates to the technical field of sound insulation of automobile front wall, in particular to a preparation method of an automobile front wall sound insulation pad. Background technique [0002] With reference to the Chinese patent publication number: CN111907164A, the publication date is: 2020-11-10, which discloses a sound insulation pad in the front wall of an automobile, its preparation method and application. Among them, the sound insulation pad in the front wall of the car includes a sound insulation cotton layer, a heavy coating layer, a foot pad and a PU foam layer that are stacked in sequence. The preparation method includes the following steps: drying and pressing the sound insulation cotton layer for standby; The coating is baked and formed by adsorption, pasted with the foot pad, then foamed, then pasted with the pressed sound-insulating cotton layer, and finally cut to obtain the sound-insulating pad in the front wall of the ...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the deficiencies of the prior art, the present invention provides a method for preparing an automobile cowl sound insulation pad, which solves the problem that the existing automobile cowl sound insulation pad has a large overall hardness and is difficult to fit with the dash panel, and when the outer side of the sound insulation pad is damaged , It is inconvenient to disassemble when it is polluted by dust

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