| 摘要 |
<p>The purpose of the present invention is to provide an insulation for a vehicle, which has a sound absorption layer with a hot-felt film for sound insulation and which further has an airlaid felt layer on at least one surface of both surfaces thereof, thereby simplifying the structure of the insulation, minimizing an increase in the weight of the insulation, obtaining a sound absorption effect and a sound insulation effect simultaneously, and easily manufacturing the insulation with a desired thickness by adjusting the thickness of the airlaid felt layer through the jet of air. In particular, another purpose of the present invention is to provide an insulation for a vehicle, which has a hot-melt film with a double-layered structure in which hot-melt films with punched holes and hot-melt films without the punched holes are arranged, thereby simplifying the structure of the insulation, and obtaining a sound absorption effect and a sound insulation effect simultaneously. Furthermore, the other purpose of the present invention is to provide an insulation for a vehicle, which is capable of having a sound absorption performance through sound absorption layers and having a sound insulation performance through a double-layered hot-melt film by having the hot-melt film between the sound absorption layers, thereby improving a sound insulation effect much more.</p> |
