Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
LAYERED SOUND ABSORPTIVE MATERIAL
To provide a layered sound absorptive material having excellent sound absorption characteristics in a low frequency region and a medium frequency region, what is more, preferably in a high frequency region.SOLUTION: There is provided a layered sound absorptive material comprising a fiber layer and a porous layer. The fiber layer has an average flow pore diameter of 1.0 to 60 μm, an air permeability of 30 to 220 cc/cm2 s. The porous layer is composed of at least one selected from the group consisting of a foamed resin, a nonwoven fabric and a woven fabric, has a thickness of 3 to 60 mm, and has a density of 3 to 150 kg/m3, which is lower than that of the fiber layer. The fiber layer is arranged in an incident side of sound, and the fiber layer and the porous layer are fixed by at least one kind selected from the group consisting of partial adhesion by melting, partial adhesion by an adhesive, sewing, a stapler, a clip, fixing by an outer frame, fixing by a framework, welding of an edge part, and sticking of an edge part by a double-sided tape, in order not to hinder air permeability. The layered sound absorptive material has an air permeability of 30 to 220 cc/cm2 s.SELECTED DRAWING: Figure 1
【課題】低周波数領域及び中周波数領域、好ましくはさらに高周波数領域において優れた吸音性を有する積層吸音材の提供。【解決手段】繊維層と、多孔質層とを含む積層吸音材であって、繊維層は平均流量細孔径が１．０〜６０μｍ、通気度が３０〜２２０ｃｃ／ｃｍ２・ｓであり、多孔質層は発泡樹脂、不織布及び織布からなる群から選ばれる少なくとも１種からなる層であって、厚みが３〜６０ｍｍ、密度が繊維層よりも低く、かつ３〜１５０ｋｇ／ｍ３であり、繊維層が音の入射側となるように配置され、繊維層と多孔質層とが、通気性を阻害しないように溶融部分接着、接着剤による部分接着、縫合、ステープラー、クリップ、外枠による固定、枠組みによる固定、エッジ部分の溶着、及びエッジ部分の両面テープによる貼り合わせからなる群から選ばれる少なくとも１種により固定され、積層吸音材の通気度が３０〜２２０ｃｃ／ｃｍ２・ｓである、積層吸音材。【選択図】図１
LAYERED SOUND ABSORPTIVE MATERIAL
To provide a layered sound absorptive material having excellent sound absorption characteristics in a low frequency region and a medium frequency region, what is more, preferably in a high frequency region.SOLUTION: There is provided a layered sound absorptive material comprising a fiber layer and a porous layer. The fiber layer has an average flow pore diameter of 1.0 to 60 μm, an air permeability of 30 to 220 cc/cm2 s. The porous layer is composed of at least one selected from the group consisting of a foamed resin, a nonwoven fabric and a woven fabric, has a thickness of 3 to 60 mm, and has a density of 3 to 150 kg/m3, which is lower than that of the fiber layer. The fiber layer is arranged in an incident side of sound, and the fiber layer and the porous layer are fixed by at least one kind selected from the group consisting of partial adhesion by melting, partial adhesion by an adhesive, sewing, a stapler, a clip, fixing by an outer frame, fixing by a framework, welding of an edge part, and sticking of an edge part by a double-sided tape, in order not to hinder air permeability. The layered sound absorptive material has an air permeability of 30 to 220 cc/cm2 s.SELECTED DRAWING: Figure 1
【課題】低周波数領域及び中周波数領域、好ましくはさらに高周波数領域において優れた吸音性を有する積層吸音材の提供。【解決手段】繊維層と、多孔質層とを含む積層吸音材であって、繊維層は平均流量細孔径が１．０〜６０μｍ、通気度が３０〜２２０ｃｃ／ｃｍ２・ｓであり、多孔質層は発泡樹脂、不織布及び織布からなる群から選ばれる少なくとも１種からなる層であって、厚みが３〜６０ｍｍ、密度が繊維層よりも低く、かつ３〜１５０ｋｇ／ｍ３であり、繊維層が音の入射側となるように配置され、繊維層と多孔質層とが、通気性を阻害しないように溶融部分接着、接着剤による部分接着、縫合、ステープラー、クリップ、外枠による固定、枠組みによる固定、エッジ部分の溶着、及びエッジ部分の両面テープによる貼り合わせからなる群から選ばれる少なくとも１種により固定され、積層吸音材の通気度が３０〜２２０ｃｃ／ｃｍ２・ｓである、積層吸音材。【選択図】図１
LAYERED SOUND ABSORPTIVE MATERIAL
積層吸音材料
HATTORI TAKAYUKI (Autor:in)
11.10.2021
Patent
Elektronische Ressource
Japanisch
IPC:
B32B
LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
,
Schichtkörper, d.h. aus Ebenen oder gewölbten Schichten, z.B. mit zell- oder wabenförmiger Form, aufgebaute Erzeugnisse
/
E04B
Allgemeine Baukonstruktionen
,
GENERAL BUILDING CONSTRUCTIONS
/
G10K
Tonerzeugungsvorrichtungen
,
SOUND-PRODUCING DEVICES
BLOCK-LIKE SOUND ABSORPTIVE STRUCTURE INCLUDING SOUND ABSORPTIVE PANEL
| Europäisches Patentamt | 2016