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公开(公告)号：US5817408A
公开(公告)日：1998-10-06
申请号：US935730
申请日：1997-09-23
IPC分类号： E04B1/82 , B32B5/02 , B32B5/26 , B32B27/12 , B60K37/00 , B60R13/08 , D04H1/48 , D06N3/00 , G10K11/168 , B32B7/02
CPC分类号： B32B27/12 , B60K37/00 , B60R13/083 , G10K11/168 , B29K2105/06 , B29L2031/3041 , B60Y2306/09 , Y10T428/24992 , Y10T442/50 , Y10T442/647 , Y10T442/676 , Y10T442/679
摘要： The invention relates to a sound insulating structure including low-density and high-density layers. The low-density layer has first and second fibrous layers and ranges from 0.5 to 1.5 kg/m.sup.2 in surface density. The first and second fibrous layers are respectively made of first and second thermoplastic synthetic fibers. The first and second fibers respectively have first and second single fiber diameters, each of which diameters is in a range of from 3 to 40 .mu.m, and first and second fiber lengths, each of which lengths is in a range of from 10 to 100 mm. The high-density layer is formed on the low-density layer and is made of an air-impermeable polymer material and has a surface density that is higher than that of the low-density layer and ranges from 1 to 10 kg/m.sup.2. The low-density layer is high in sound-absorption coefficient and at the same time low in spring constant. Therefore, the sound insulating structure becomes substantially improved in sound insulating capability.
摘要翻译： 本发明涉及包括低密度和高密度层的隔音结构。 低密度层具有第一和第二纤维层，表面密度为0.5-1.5kg / m 2。 第一和第二纤维层分别由第一和第二热塑性合成纤维制成。 第一纤维和第二纤维分别具有第一和第二单纤维直径，其直径范围为3至40μm，第一和第二纤维长度各自的长度为10至100 mm。 高密度层形成在低密度层上，由不透气的聚合物材料制成，其表面密度比低密度层高，为1〜10kg / m 2。 低密度层的吸声系数高，弹簧常数低。 因此，隔音性能显着提高。
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公开(公告)号：US5677027A
公开(公告)日：1997-10-14
申请号：US584278
申请日：1996-01-11
申请人： Yuugorou Masuda , Shousuke Oku , Masashi Ito , Tomohiro Ito , Hiroshi Sugawara
发明人： Yuugorou Masuda , Shousuke Oku , Masashi Ito , Tomohiro Ito , Hiroshi Sugawara
CPC分类号： B60R13/083 , B32B27/02 , B60N3/048 , D04H1/54 , G10K11/168 , Y10T428/23979 , Y10T428/23986 , Y10T442/641 , Y10T442/656
摘要： The disclosure relates to a sound insulating structure formed on an automobile floor panel on which at least one of a vibration and a sound is incident. This structure includes a covering layer for covering the panel and a cushioning layer for reducing an impact of the at least one of the vibration and the sound. This cushioning layer is interposed between the covering layer and the panel and made of a nonwoven fabric. This nonwoven fabric includes 5-95 wt % of a first fiber and 5-95% of a second fiber, wherein the total amount of the first and second fibers is 100 wt %. This first fiber has a fineness within a range from 1.5 to 40 deniers, a first melting point, and a first portion including polyethylene terephthalate. The second fiber has a fineness within a range from 1.5 to 15 deniers, a core portion, and a sheath portion covering the core portion. A majority of the core portion includes polyethylene terephthalate. The sheath portion includes an elastic copolyester which has a second melting point that is lower than the first melting point and is not higher than 200.degree. C. The elastic copolyester is prepared by copolymerizing polyethylene terephthalate and at least one other monomer. The sound insulating structure has a high sound-transmission-loss factor within a so-called road-noise frequency range and an adequate cushioning effect and is particularly superior in sound insulating at a normal temperature (15.degree.-40.degree. C.).
摘要翻译： 本公开涉及一种形成在汽车地板上的隔音结构，其中振动和声音中的至少一个入射。 该结构包括用于覆盖面板的覆盖层和用于减少振动和声音中的至少一个的冲击的缓冲层。 该缓冲层插入在覆盖层和面板之间，由无纺布构成。 该无纺布包括5-95重量％的第一纤维和5-95％的第二纤维，其中第一和第二纤维的总量为100重量％。 该第一纤维的细度在1.5至40旦，第一熔点和包含聚对苯二甲酸乙二醇酯的第一部分的范围内。 第二纤维的细度在1.5至15旦的范围内，芯部分和覆盖芯部分的护套部分。 核心部分的大部分包括聚对苯二甲酸乙二醇酯。 护套部分包括具有低于第一熔点且不高于200℃的第二熔点的弹性共聚酯。弹性共聚酯通过聚对苯二甲酸乙二醇酯和至少一种其它单体共聚来制备。 隔音结构在所谓的道路噪声频率范围内具有高的声音传输损耗因数，并具有足够的缓冲效果，并且在常温（15°-40℃）下隔音性能特别优异。
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