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    • 9. 发明授权
    • Low permeability airbag cushions having film coatings of extremely low thickness
    • 具有极低厚度薄膜涂层的低透气性气囊
    • US06429155B1
    • 2002-08-06
    • US09767250
    • 2001-01-22
    • Shulong LiJohn A. Sollars, Jr.
    • Shulong LiJohn A. Sollars, Jr.
    • B32B518
    • B60R21/235B32B27/02B32B27/12B60R21/232B60R2021/23514D03D1/02D03D11/02D06N3/183D06N3/186Y10T428/13Y10T428/1307Y10T428/1362Y10T442/2049Y10T442/2139Y10T442/3008Y10T442/3301Y10T442/3472Y10T442/3496Y10T442/3545Y10T442/3553Y10T442/3561
    • Coated inflatable fabrics, more particularly airbags to which very low add-on amounts of coating have been applied, are provided which exhibit extremely low air permeability. The inventive inflatable fabrics are primarily for use in automotive restraint cushions that require low permeability characteristics (such as side curtain airbags). Traditionally, heavy, and thus expensive, coatings of compounds such as neoprene, silicones and the like, have been utilized to provide such required low permeability. The inventive fabric utilizes an inexpensive, very thin coating to provide such necessarily low permeability levels. Thus, the inventive coated inflatable airbag comprises a film laminated on at least a portion of the target fabric surface wherein the film possesses a tensile strength of at least 2,000 and an elongation at break of at least 180%. The film provides a low permeability airbag cushion exhibiting a leak-down time of at least 5 seconds as well as a very low packing volume (for more efficient use of storage space within a vehicle) for the target side curtain airbag.
    • 涂覆的充气织物,更具体地,提供了涂覆非常低的涂层量的安全气囊,其显示出极低的透气性。 本发明的充气织物主要用于需要低渗透特性的汽车约束垫(例如侧帘安全气囊)中。 传统上,已经使用诸如氯丁橡胶,硅酮等化合物的沉重且因此昂贵的涂层来提供所需的低渗透性。 本发明的织物使用廉价的非常薄的涂层来提供这种必要的低渗透性水平。 因此,本发明的涂覆的可充气气囊包括层压在目标织物表面的至少一部分上的膜,其中该膜具有至少2000的拉伸强度和至少180%的断裂伸长率。 该薄膜为目标侧帘式气囊提供至少5秒的泄漏时间以及非常低的包装体积(用于更有效地使用车辆内的存储空间)的低透气性气囊垫。