| 摘要 |
An acoustical absorbing panel (1) with a decorative design pattern, said panel comprising a board (2) comprising mineral fibres, said board (2) having two major surfaces and four minor side surfaces. Said panel further comprising a fleece layer (3) attached to at least one major surface of the mineral fibre board (2), and a layer of paint (4) applied to said fleece layer (3) on at least a major surface. Wherein said fleece layer (3) comprises lasting changes (10) made by a laser beam, said lasting changes are in the form of a decorative design pattern, and said pattern is visible through said layer of paint (4). The invention also concerns a method and an apparatus for manufacturing the acoustical absorbing panel.
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