The invention discloses a sound insulation pad and a preparation method thereof, and belongs to the field of automobile sound insulation, the sound insulation pad comprises an upper layer cotton felt, a middle layer barrier film and a lower layer cotton felt which are stacked from top to bottom, and the upper layer cotton felt and the middle layer barrier film are combined together through heat bonding; the middle-layer barrier film and the lower-layer cotton felt are combined together through thermal bonding, the upper-layer cotton felt is prepared by mixing washed white cotton, LPET and elastic fibers, and the lower-layer cotton felt is prepared by mixing washed white cotton, LPET and elastic fibers. The preparation method of the washed white cotton comprises the following steps: S1, soaking recycled denim cotton and/or mixed-color cotton in water, adding a fading agent, heating to 90-100 DEG C, and soaking for 2-6 hours in an environment of 90-100 DEG C; s2, the soaked cloth is cleaned and dried, an opener is used, the cloth is made into white cotton fibers, and the washed white cotton is obtained. The sound insulation pad provided by the invention has the advantages of low odor, low VOC (Volatile Organic Compounds) and low cost, and has relatively strong market competitiveness.

    本发明公开了一种隔音垫及其制备方法,属于汽车隔音领域,本发明提供隔音垫包括自上而下层叠设置的上层棉毡、中层阻隔膜和下层棉毡,所述上层棉毡与所述中层阻隔膜之间通过热粘合结合在一起,所述中层阻隔膜与所述下层棉毡通过热粘合结合在一起,所述上层棉毡由水洗白棉、LPET、弹性纤维混合制备而成,所述下层棉毡由水洗白棉、LPET、弹性纤维混合制备而成。所述水洗白棉的制备方法包括以下步骤:S1:将回收的牛仔棉和/或杂色棉浸泡在水中,加入褪色剂,加热至90~100℃,90~100℃环境下浸泡2~6小时;S2:清洗浸泡后的布料并烘干,使用开松机,将布料制成白棉纤维,即得水洗白棉。本发明提供的隔音垫具有低气味低VOC低成本的优势,具有较强的市场竞争力。


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    Title :

    Sound insulation pad and manufacturing method thereof


    Additional title:

    一种隔音垫及其制作方法


    Contributors:
    YANG SHANMIAO (author) / XIE XINXING (author) / JIA JINDONG (author) / LU JUAN (author)

    Publication date :

    2023-09-29


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B32B LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM , Schichtkörper, d.h. aus Ebenen oder gewölbten Schichten, z.B. mit zell- oder wabenförmiger Form, aufgebaute Erzeugnisse / B29C Formen oder Verbinden von Kunststoffen , SHAPING OR JOINING OF PLASTICS / B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR



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