To provide a manufacturing method of a new sound absorption material excellent in a sound absorption characteristic in a low frequency region.SOLUTION: A manufacturing method of a sound absorption material includes a drilling process for pressing a pointed member to a thermoplastic resin layer of a laminate including the thermoplastic resin layer and a porous layer in a state in which the thermoplastic resin layer is at a softening temperature or higher and forming a hole communicating with the thermoplastic resin layer and the porous layer.SELECTED DRAWING: Figure 1
【課題】低周波領域における吸音特性に優れる新たな吸音材の製造方法を提供すること。【解決手段】熱可塑性樹脂層及び多孔質層を備える積層体の熱可塑性樹脂層に、熱可塑性樹脂層が軟化温度以上である状態で尖形部材を押し当てて、熱可塑性樹脂層及び多孔質層に連通する孔を形成する穿孔工程を備える、吸音材の製造方法。【選択図】図1
MANUFACTURING METHOD OF SOUND ABSORPTION MATERIAL, SOUND ABSORPTION MATERIAL AND VEHICLE MEMBER
吸音材の製造方法、吸音材、及び車両部材
2023-10-20
Patent
Electronic Resource
Japanese
MANUFACTURING METHOD OF SOUND ABSORPTION MATERIAL, SOUND ABSORPTION MATERIAL AND VEHICLE MEMBER
European Patent Office | 2023
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