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1.发明授权Method of making sound absorbing laminates and laminates having maximized sound absorbing characteristics 失效制造具有最大吸声特性的吸声层压板和层压板的方法
公开(公告)号：US5824973A
公开(公告)日：1998-10-20
申请号：US543766
申请日：1995-10-16
CPC分类号： B32B5/22 , E04B2001/8461
摘要： A sound absorption laminate comprises a porous insulation substrate, such as, a glass, polymeric or natural fiber blanket or a foamed polymeric resin sheet and a facing sheet with a high air flow resistance. The facing sheet is superimposed upon a surface of the porous insulation substrate to augment the acoustical properties of the substrate. With the facing sheet the air flow resistance of the laminate is greater than the air flow resistance of the substrate and the laminate exhibits a higher sound absorption coefficient than the sound absorption coefficient of the substrate. Thus, the laminate exhibits better sound absorption properties than the substrate and is suitable for sound absorption applications for which the substrate alone would not be suitable.
摘要翻译： 吸声层压板包括多孔绝缘基底，例如玻璃，聚合物或天然纤维毡或发泡聚合物树脂片和具有高气流阻力的表面片。 所述表面片叠加在所述多孔绝缘基底的表面上以增强所述基底的声学性质。 对于片材，层压体的气流阻力大于衬底的气流阻力，层压体的吸音系数比衬底的吸声系数高。 因此，层压板表现出比基材更好的吸声性能，并且适合于单独的基材不适合的吸声应用。
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