| 摘要 |
<p>PURPOSE:To reduce the cost of the above material, by a method wherein the surface of a pressing object is not injured at the time of pressing, uniform press pressure is kept on and reuse of the material is made possible. CONSTITUTION:A plastic film having the melting point >=200 deg.C, a thermal shrinkage factor <=2% at 150 deg.C for 30 minutes, the thermal shrinkage factor <=3% at 190 deg.C for 20 minutes and a cushioning factor >=5% is used as a base of a cushioning material for hot press.</p> |
