| 摘要 |
PROBLEM TO BE SOLVED: To provide an acoustic sheet of a heat-controlling nonwoven fabric for household electrical appliance in which vibration and noise emitted by motors, compressors, etc., can efficiently be absorbed and lowering, etc., of efficiency caused by generation of heat of motors and compressors can be suppressed. SOLUTION: The acoustic sheet material of a heat-controlling nonwoven fabric for household electrical appliance is composed of a polyester-based fiber having 55-75°C glass transition temperature. In the acoustic sheet material, 5-40 wt.% microcapsule in which paraffin wax having 40-80°C melting point is sealed is attached through a binder resin to the surface of the sheet material and the specific volume is 3×10<SP>-3</SP>to 2×10<SP>-1</SP>m<SP>3</SP>/kg and fiber-entangling part is not melted. COPYRIGHT: (C)2006,JPO&NCIPI |
