SOUND INSULATION PLATE

To provide a sound insulation plate capable of satisfying both of resistance to flying stones and fire retardancy.SOLUTION: A sound insulation plate includes a laminated glass in which a first chemically strengthened glass arranged on the side of a passage and a second chemically strengthened glass...

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Hauptverfasser: IBARAKI SHUNSUKE, OKETANI YUKIFUMI
Format: Patent
Sprache:eng ; jpn
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Beschreibung
Zusammenfassung:To provide a sound insulation plate capable of satisfying both of resistance to flying stones and fire retardancy.SOLUTION: A sound insulation plate includes a laminated glass in which a first chemically strengthened glass arranged on the side of a passage and a second chemically strengthened glass arranged on the side opposite to the passage are laminated via an intermediate film. The surface compressive stress CS1 (MPa) and the central tensile stress CT1 (MPa) in the first chemically strengthened glass, and the thickness DOL2(μm) of a compressive stress layer and the central tensile stress CT2 (MPa) in the second chemically strengthened glass satisfy the relational expressions of CT1≤2.75(MPa), CS1≥300(MPa), DOL2≥20(μm), and CT2>2.75(MPa).SELECTED DRAWING: Figure 1 【課題】耐飛び石性と防火性とを満たすことができる遮音板を提供する。【解決手段】遮音板は、通路の側に配置される第1の化学強化ガラスと前記通路と反対の側に配置される第2の化学強化ガラスとが、中間膜を介して積層される合わせガラスを含む遮音板を有し、第1の化学強化ガラスにおける、表面圧縮応力CS1(MPa)と、中央引張応力CT1(MPa)と、第2の化学強化ガラスにおける、圧縮応力層の厚みDOL2(μm)、中央引張応力CT2(MPa)が、CT1≦2.75(MPa)、CS1≧300(MPa)、DOL2≧20(μm)、CT2>2.75(MPa)の関係式を満たす。【選択図】図1