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    • 5. 发明申请
    • ACOUSTIC ABSORBER WITH BARRIER FACING
    • 具有阻挡面的吸音吸收器
    • US20090173569A1
    • 2009-07-09
    • US12339924
    • 2008-12-19
    • Natalia V. LevitEric W. Teather
    • Natalia V. LevitEric W. Teather
    • E04B1/84
    • E04B9/04E04B1/8409E04B2103/04
    • An acoustic absorber includes a core of acoustically absorbing material having two major surfaces, and a facing for covering the core on at least one major surface. The facing comprises a porous flash spun plexifilamentary film-fibril sheet having a coherent surface and comprising a plurality of pores having a pore diameter between about 100 nm and about 20,000 nm and a mean pore diameter of less than about 20,000 nm. The use of the facing improves the acoustic absorption of ambient sound at a frequency below about 1200 Hz. The facing provides a barrier to moisture and particles including microorganisms so that the absorber is suitable for use in environments in which cleanliness is critical.
    • 声吸收器包括具有两个主表面的声吸收材料的芯和用于在至少一个主表面上覆盖芯的面。 面包括具有粘结表面的多孔快速纺丝丛状薄膜原纤维片,并且包含孔径在约100nm至约20,000nm之间且平均孔径小于约20,000nm的多个孔。 使用面部可以改善低于约1200Hz频率的环境声音的吸声。 面对水分和颗粒(包括微生物)提供屏障,使吸收体适用于清洁度至关重要的环境中。
    • 9. 发明申请
    • ACOUSTICALLY ABSORBENT CEILING TILE HAVING BARRIER FACING WITH DIFFUSE REFLECTANCE
    • 具有防漏反射性能的阻气罩吸音吸顶式
    • US20090173570A1
    • 2009-07-09
    • US12339951
    • 2008-12-19
    • Natalia V. LevitEric W. Teather
    • Natalia V. LevitEric W. Teather
    • E04B1/84
    • E04B9/04E04B2103/04
    • An acoustically absorbent ceiling tile includes a core of acoustically absorbing material having two major surfaces, and a facing for covering the core on at least one major surface. The facing comprises a porous flash spun plexifilamentary film-fibril sheet having a coherent surface and comprising a plurality of pores having a pore diameter between about 100 nm and about 20,000 nm and a mean pore diameter of less than about 20,000 nm. The facing has highly diffuse reflectance of light, and a reflectance of greater than about 86%. The use of the facing improves the acoustic absorption of ambient sound at frequencies below about 1200 Hz. The facing provides a barrier to moisture and particles including microorganisms so that the ceiling tile is suitable for use in environments in which cleanliness is critical.
    • 吸声天花板瓦片包括具有两个主表面的吸声材料芯和用于在至少一个主表面上覆盖芯的面。 面包括具有粘结表面的多孔快速纺丝丛状薄膜原纤维片,并且包含孔径在约100nm至约20,000nm之间且平均孔径小于约20,000nm的多个孔。 面具有高的漫反射光,反射率大于约86%。 使用面部可以改善低于约1200Hz频率的环境声音的吸声。 面对水分和颗粒(包括微生物)提供屏障,使得天花板砖适用于清洁度至关重要的环境中。