| 摘要 |
PURPOSE:To provide a cap strength, a shrinkage creep characteristics necessary for a cellular sheet and to provide low burning calorie so as to discard by an incinerating method. CONSTITUTION:A laminated film is used for both a cap film 2, a back film 3 for constituting a cellular sheet 1. The laminated film contains at least two layers of a low inorganic filler content layer 5 containing 5wt.% or less of inorganic filler and a high inorganic filler content layer 6 containing 25-70wt.% of inorganic filler. |
