STYRENIC RESIN COMPOSITION FOR FOAMING, STYRENIC RESIN FOAM SHEET, METHOD FOR MANUFACTURING THE SAME, AND FOOD PACKAGING CONTAINER

摘要

PROBLEM TO BE SOLVED: To provide, by targeting a styrenic resin composition enabling the weight reduction and deep draw molding of a styrenic resin foam sheet, a styrenic resin foam sheet excellent in terms of strengths and secondary moldability and accompanied by scarce deteriorations of physical properties even in a case where recycled materials are mixed therewith.SOLUTION: The provided styrenic resin composition for foaming has a melt flow rate (MFR) of 0.8-3.0 g/10 min as it is measured at 200°C under a load of 49 N, a number-average molecular weight (Mn) of 80,000-130,000, a peak molecular weight (Mtop) of 200,000-350,000, a Z average molecular weight (Mz) of 750,000 or above, and a branch ratio gM of 0.85-0.40 within a molecular weight range of 1,000,000-1,500,000.