Resin-formed body including wood powder production method of the same and black key for keyboard musical instrument
AssigneeYamaha Corporation
InventorsSyoji Shimano, Nobuhiko Suzuki
Life of this patent
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Abstract
In order to provide a resin-formed body including wood powder which is applicable to a material for a black key having a good external appearance and which has touch close to real wood with less difference in quality without using rare wood, the resin-formed body including wood powder (1) includes colored wood powder, resin and pigment. Moreover, with respect to the resin-formed body including wood powder (1), it is possible to use a mass ratio between the wood powder and the resin so as to be 90/10-60/40.
Claims4
A black key for a keyboard musical instrument which is made from a resin-formed body, wherein the resin-formed body comprises:
- wood powder previously colored with dyestuff;
- and
- an acrylonitrile-butadiene-styrene resin,
- wherein the resin-formed body has uniform quality in external appearance.
A black key for a keyboard musical instrument which is made from a resin-formed body, wherein a production method of the resin-formed body comprises:
- a coloring step of coloring wood powder with dyestuff to obtain colored wood powder;
- a mixing step in which the colored wood powder, an acrylonitrile-butadiene-styrene resin and pigment are mixed in order to obtain a mixture;
- and
- a forming step of forming the mixture so as to obtain the resin-formed body having uniform quality in external appearance.
Dependencies are inferred from the claim text.