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BLACK KEY OF KEYBOARD INSTRUMENT

2025-06-19 02:343780下载
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PROBLEM TO BE SOLVED : To provide a resin formed body containing wood powder which is suitably used as material for black keys and is obtainable without using rare woods, while providing little difference in quality and having good appearance and touch feeling close to that of woods. SOLUTION : A resin formed body containing wood powder 1 includes dyed wood powder, a resin and a pigment. For the resin formed body containing wood powder 1, a mass ratio between the wood powder and the resin can be 90/10 to 50/50. COPYRIGHT : (C)2012, JPO&INPIT


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