Laminiertes Schichtholz für ein Musikinstrument, Verfahren zur Herstellung davon und Musikinstrument

Details

Veröffentlichungs-Nr.

EP3370228

Aktenzeichen

EP17210513

Anmeldetag

22. Dezember 2017

Veröffentlichung

6. September 2023

Erteilung

6. September 2023

Rechtsraum

EP

IPC

G10D13/02G10D13/24G10D13/22

Abstract

A laminated plyboard for a musical instrument which reduces a loss of vibration energy due to internal friction while securing high rigidity with inexpensive cost. A laminated plyboard 20 comprises a first layer portion S1 including layers 24 and 25, a second layer portion S2 including layers 26 and 27, and an impregnated layer 21 impregnated with phenol and sandwiched between the first layer portion S1 and the second layer portion S2. A rigidity coefficient of the impregnated layer 21 is higher than rigidity coefficients of the layers 24 to 27 that configure the first layer portion S1 and the second layer portion S2.

Anmelder

Firma

YAMAHA CORPORATION

Land

🇯🇵 Japan

Fachgebiete