| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a soundproof sheet which has excellent sound insulation property and a reduced weight for operator's convenience in handling at a construction site. <P>SOLUTION: A soundproof sheet includes a laminate having a first sheet layer 2 formed from a first resin composition of which both surfaces or one surface is applied with an inorganic material, a sheet layer 3 formed from nonwoven fiber, and a sheet layer 4 formed from a second resin composition of which both surfaces or one surface is applied with an inorganic material, which are laminated in this order by spot welding. <P>COPYRIGHT: (C)2012,JPO&INPIT |
