| 摘要 |
PROBLEM TO BE SOLVED: To obtain both a thermoplastic resin foam sheet having high surface smoothness and a foamed molding having excellent dimensional accuracy by thermoforming the sheet. SOLUTION: This thermoplastic resin foam sheet, especially a polypropylene- based resin foam sheet is adjusted to 4.0×10<6> to 6.0×10<6> N/m<2> loss modulus at 25 deg.C, properly set in a thickness range to give the objective foamed molding having excellent cushioning characteristics, improved dimensional accuracy and surface smoothness, suitable for protecting electronic parts, precision instrument parts, etc., from shocks during storage and transportation. |
