The polyester non-woven fabric comprises a fluffy non-woven fabric layer and an expanded polytetrafluoroethylene film layer, an inner net layer of the fluffy non-woven fabric layer is formed in a three-dimensional mode with uniform density in the thickness direction, and the upper surface and the lower surface of the fluffy non-woven fabric layer are a compact layer face and an outer layer face respectively. The outer layer surface is connected with the expanded polytetrafluoroethylene film layer, and staggered special-shaped dense micron-sized pore channels are formed in the expanded polytetrafluoroethylene film layer. By means of the mode, the sound absorption and insulation effects on low-frequency noise, intermediate-frequency noise, high-frequency noise and the like are better; the material is light in weight, good in damping elasticity, environment-friendly, free of peculiar smell and capable of being widely used in automotive upholstery to achieve the effects of sound insulation, vibration reduction and cost reduction, so that the riding space in an automobile is enlarged, the noise in the automobile is reduced, and the comfort index of the automobile is improved.

    本发明公开了一种高吸声系数的聚酯无纺布及隔热垫,包括:蓬松无纺布层和膨体聚四氟乙烯膜层,蓬松无纺布层的内部网层是在厚度方向密度均匀的立体形成,其上下表面分别为紧密层面和外层面,外层面上连接所述膨体聚四氟乙烯膜层,膨体聚四氟乙烯膜层内设有错层异形密集的微米级孔道。通过上述方式,本发明对低频、中频和高频率等噪声具有更优秀的吸音隔音效果;重量轻、阻尼弹性好,环保无异味可以大量使用在汽车内饰件中,起到隔音减振和降低成本的作用,从而扩大了汽车内的乘坐空间和降低了汽车内的噪音,提升汽车舒适性指标。


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    Titel :

    Polyester non-woven fabric with high sound absorption coefficient and heat insulation pad


    Weitere Titelangaben:

    一种高吸声系数的聚酯无纺布及隔热垫


    Beteiligte:
    ZHANG YUN (Autor:in) / DING RONGHUA (Autor:in)

    Erscheinungsdatum :

    2022-04-12


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Chinesisch


    Klassifikation :

    IPC:    C09J ADHESIVES , Klebstoffe / B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR