The invention relates to a composite structure front wall inner side sound insulation pad for an electric automobile and a manufacturing method of the composite structure front wall inner side sound insulation pad, the sound insulation pad comprises an EVA layer and a PET layer, the surface density of the EVA layer is 2000-4000 g/m < 2 >, and the surface density of the PET layer is 550-2000 g/m < 2 >; the manufacturing method comprises the following steps: (1) respectively putting the EVA layer and the PET layer into a drying oven for heating; (2) putting the EVA layer and the PET layer which are heated into a mold at the same time, and closing the mold for compounding; and (3) punching the composite layer of the EVA layer and the PET layer, maintaining the pressure, cooling and molding. Compared with the prior art, the sound insulation pad has the advantages that the sound absorption performance is improved on the basis that the sound insulation performance is met, and especially on an electric automobile, the mechanism can more effectively eliminate noise generated by the automobile.
本发明涉及一种电动汽车用复合结构前围内侧隔音垫及其制作方法,隔音垫包括EVA层和PET层,所述EVA层的面密度为2000‑4000g/m2,PET层的面密度为550‑2000g/m2;制作方法包括以下步骤:(1)将EVA层与PET层分别放入烘箱加热;(2)将加热完毕的EVA层与PET层同时放入模具,合模复合;(3)对EVA层与PET层的复合层进行冲切后保压,冷却成型。与现有技术相比,本发明隔音垫在满足隔音性能的基础上提高了吸音性能,尤其是在电动汽车上,此机构可以更加有效的消除车辆产生的噪音。
Composite structure front wall inner side sound insulation pad for electric automobile and manufacturing method of composite structure front wall inner side sound insulation pad
一种电动汽车用复合结构前围内侧隔音垫及其制作方法
2025-03-14
Patent
Electronic Resource
Chinese
IPC: | B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR / B26F Perforieren , PERFORATING / 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 |
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