| 摘要 |
<p>Board (1) for sound absorption where the board is made of fibre layers (2) in which gypsum plaster is embedded. These fibres form layers in level with the board. The fibres may be made of a wide variety of materials, such as plastics, mineral materials, ceramic materials and other synthetic or natural materials. The reinforcing effect of the fibres results in the board obtaining high strength and stability even with small thicknesses of the board.</p> |
