发明名称 |
ACOUSTIC ELEMENTS AND THEIR PRODUCTION |
摘要 |
<p>Acoustic element (1) has a flat, sound-receiving, front face (2) which extends in the XY plane and has a good sound-absorption coefficient, and the element is formed of a bonded batt of air laid mineral fibres having a density of 70 to 200kg/m<3> wherein the fibres extend from the front face (2) and at least through the front half of the thickness of the batt have a Z direction component greater than the Z direction component of conventional air laid products, and the front face of the batt is a cut and abraded face. The element can be made by air laying mineral fibres and binder, reorienting the fibres to provide an increased fibre orientation in the Z direction, curing the binder to form a cured batt and cutting the cured batt in the XY plane into two cut batts and smoothing each cut surface by abrasion to produce a flat face on each cut batt.</p> |
申请公布号 |
WO2005095727(A1) |
申请公布日期 |
2005.10.13 |
申请号 |
WO2005EP03438 |
申请日期 |
2005.04.01 |
申请人 |
ROCKWOOL INTERNATIONAL A/S;BIRCH, JORGEN;JENSEN, GORM, ROSENBERG;BOLLUND, LARS |
发明人 |
BIRCH, JORGEN;JENSEN, GORM, ROSENBERG;BOLLUND, LARS |
分类号 |
D04H1/4218;D04H1/4226;D04H1/74;E04B1/84;E04B1/86;E04B9/00;E04B9/04;E04B9/28;(IPC1-7):E04B1/86 |
主分类号 |
D04H1/4218 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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