PROBLEM TO BE SOLVED: To provide a method for manufacturing a soundproof material which is light in weight and excellent in sound absorption properties and sound insulation performance.SOLUTION: A sheet-like base material comprising a fiber body is formed by entanglement of fibers A mainly comprising ultra-fine fibers, fibers B mainly comprising heat-fusible fibers, and 0 to 20 wt.% of fibers C mainly comprising short fibers by an opening machine by either of a fleece machine or a carding machine. One surface of the base material is heated at 100 to 240°C and retained for 0.5 to 10 seconds while being pressurized to a prescribed thickness, thereby forming a plate-like soundproof material having an air permeability adjustment film with a high density on the one surface of the base material. The plate-like soundproof material having the air permeability adjustment film formed is heated in a heating oven at 150 to 180°C for 15 to 60 seconds, thereby making the plate-like soundproof material easily formable in a state in which the air permeability adjustment film is formed. The heated plate-like soundproof material is compression-formed while being cooled in a press die having the shape of a vehicular interior material into the vehicular interior material having the air permeability adjustment film arranged on a vehicle cabin side.SELECTED DRAWING: Figure 1
【課題】本発明の目的は、軽量で且つ吸音特性及び遮音性能に優れた防音材の製造方法を提供することにある。【解決手段】極細繊維を主成分とする繊維A:熱融着性繊維を主成分とする繊維B:短繊維を主成分とする繊維C:0〜20重量%とを開繊機によりフリースマシン又はカード機のいずれかにより交絡させて繊維体からなるシート状の基材を形成し、基材の一方の表面を100〜240℃で加熱して、0.5〜10秒間の間、所定厚さに加圧保持して、基材の一方の面に高密度な通気調整膜を有する板状の防音材を形成し、通気調整膜を形成した板状の防音材を加熱炉で、150〜180℃、15〜60秒間、加熱することにより、通気調整膜を形成した状態で、板状の防音材を成形し易くし、加熱された板状の防音材を車両用内装材の形状のプレス金型で冷却しつつ圧縮成形して、通気調整膜が車室側に配置された車両用内装材を成形する。【選択図】図1
METHOD FOR MANUFACTURING VEHICULAR SOUNDPROOF MATERIAL
車両用防音材の製造方法
2016-03-17
Patent
Electronic Resource
Japanese
IPC: | B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR / D04H Herstellen von flächigem Textilgut, z.B. aus Fasern oder fadenförmigem Material , MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL / G10K Tonerzeugungsvorrichtungen , SOUND-PRODUCING DEVICES |
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