To provide a sound absorbing board that can improve rigidity while presenting sound absorbency, as well as a package tray, a luggage board, and a sound insulation structure including the sound absorbing board.SOLUTION: A sound absorbing board 10 includes: a pair of skin materials 20 which contain a polyurethane foam 11 having an open-cell structure, which are integrated with front and rear surfaces of the polyurethane foam 11, respectively, and which have air permeability; and impregnated layers 22 which are included in the skin materials 20 and in which a raw material 11M of the polyurethane foam 11 is impregnated and cured. A ventilation volume of the skin materials 20 including the impregnated layers 22 based on JIS K6400-7 B method:2012 is 3 to 90 ml/cm2/s.SELECTED DRAWING: Figure 1
【課題】吸音性を有しつつ剛性を向上させることが可能な吸音ボード、並びに、その吸音ボードを含むパッケージトレイ、ラゲッジボード及び遮音構造の提供。【解決手段】吸音ボード10は、連続気泡構造を有するポリウレタンフォーム11を含み、ポリウレタンフォーム11の表裏の面にそれぞれ一体化され、通気性を有する1対の表皮材20と、表皮材20に含まれ、ポリウレタンフォーム11の原料11Mが含浸硬化した含浸層22と、を備える。含浸層22を含む表皮材20のJIS K6400-7 B法:2012に基づく通気量は、3~90ml/cm2/sとなっている。【選択図】図1
SOUND ABSORBING BOARD
吸音ボード
2024-10-31
Patent
Electronic Resource
Japanese
IPC: | G10K Tonerzeugungsvorrichtungen , SOUND-PRODUCING DEVICES / B32B LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM , Schichtkörper, d.h. aus Ebenen oder gewölbten Schichten, z.B. mit zell- oder wabenförmiger Form, aufgebaute Erzeugnisse / B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR |
DESIGN METHOD FOR SOUND ABSORBING BOARD USING HONEYCOMB AND THE SOUND ABSORBING BOARD USING THE SAME
European Patent Office | 2020
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