| 摘要 |
<p>A noise insulation panel incorporates stabilised natural fibre (1) with a post-applied surface finish. The fibre (1) consists of a chosen ratio of combined natural fibres, shavings and stabilisation agents (2). The outer (3) fibre layer has a bonded coating of non-fibrous vegetable matter (4). The stabilisation agent is thermoplastic fibre or powder pref. reactive duroplastic plastic resin systems. The bonded coating (4) consists pref. of hemp shavings each of length 1 mm to 100 mm, chopped straw, wood chips or shredded paper. Also claimed is a manufacturing process for the panel in which hemp is crushed, chopped and shavings removed. Between 10 and 60 per cent of the shavings are separated from the fibrous material. Chosen additives are admixed to the fibres which are then pressed into board size and coated. The coating is e.g. metallic or non-metallic foil, veneer or sheet metal applied using profiled drum presses. The boards are then brought to a pre-determined temperature, profiled as required and cut to size.</p> |
