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    • 5. 发明申请
    • LOFTY SPUNBOND NONWOVEN LAMINATE
    • WO2004038116A1
    • 2004-05-06
    • PCT/US2003/032227
    • 2003-10-09
    • KIMBERLY-CLARK WORLDWIDE, INC.
    • SCHMIDT, Richard, JohnKEPNER, Eric, ScottFENWICK, Christopher, DaleFREESE, Chad, Michael
    • E04B1/88
    • B32B5/26B32B5/022B32B7/02B32B2250/20B32B2262/0253B32B2307/102B32B2419/00D04H3/016D04H3/147E04B1/88E04B2001/8461G10K11/162G10K11/168Y10T442/60Y10T442/621Y10T442/637Y10T442/638Y10T442/659Y10T442/66
    • The present invention is a laminate of a low loft layer, the first layer, and a high loft layer, the second layer. More specifically, the present invention provides a nonwoven laminate containing a first layer from thermoplastic spunbond filaments having an average denier less than about 1.8 dpf (2.0 dtex); and a second layer containing thermoplastic multicomponent spunbond filaments having an average denier greater than about 2.3 dpf (2.55 dtex). The laminate has a structure such that the density of the first layer is greater than the density of the second layer and the thickness of the second layer is greater than the thickness of the first layer. Also disclosed is a laminate containing the laminate of a low loft layer containing spunbond filaments having an average denier less than 1.8 dpf (2.0 dtex), a high loft layer containing thermoplastic multicomponent spunbond filaments having an average denier greater than about 2.3 dpf (2.55 dtex)and layer containing a meltblown nonwoven web. The meltblown layer may be between the high loft layer and the low loft layer, adjacent to the high loft layer and opposite the low loft layer, adjacent to the low loft layer and opposite the high loft layer. Additionally, the present invention relates to a thermal or acoustical insulation material which contains the laminate of the high loft layer and the low loft layer, or the laminate of the low loft layer, the high loft layer and a meltblown nonwoven web. Also disclosed is a method of attenuating sound waves passing from a sound source area to a second area. The method includes positioning an acoustical insulation material containing the nonwoven laminate of the present invention between the sound source area and the second area.
    • 本发明是低层阁楼层,第一层和高阁楼层,第二层的叠层。 更具体地,本发明提供了一种非织造层压材料,其包含平均旦尼尔小于约1.8dpf(2.0dtex)的热塑性纺粘长丝的第一层; 和含有平均旦尼尔大于约2.3dpf(2.55dtex))的热塑性多组分纺粘长丝的第二层。 层压体具有使第一层的密度大于第二层的密度并且第二层的厚度大于第一层的厚度的结构。 还公开了包含平均旦尼尔小于1.8dpf(2.0dtex)的含有纺粘长丝的低膨松层的层叠体的层压体,包含平均旦尼尔大于约2.3dpf(2.55dtex)的热塑性多组分纺粘长丝的高顶层 )和含有熔喷非织造纤维网的层。 熔喷层可以位于高隆起层和低顶层之间,邻近高隆顶层并与低隆起层相对,邻近低阁楼层并与高阁楼层相对。 此外,本发明涉及一种热绝缘材料或隔音材料,其包含高阁楼层和低阁楼层的层压材料,或低层顶层,高阁楼层和熔喷非织造纤维网的层压板。 还公开了一种衰减从声源区域传播到第二区域的声波的方法。 该方法包括将包含本发明的非织造层压材料的隔音材料定位在声源区域和第二区域之间。