| 摘要 |
PROBLEM TO BE SOLVED: To provide an extruded and foamed product using a polystyrene resin composition, excellent in chemical resistance and oil resistance to oils contained in food and the like, excellent in a cushioning property and a heat- insulating property, not having a hole on the surface of the extruded product. SOLUTION: This extruded and foamed product uses a polystyrene resin composition comprising the following components (A), (B) and (C). (A) 45-92 wt.% of a polystyrene resin having a weight-average mol.wt. of 240,000-500,000, (B) 5-45 wt.% of a polyolefin resin (excluding the component C), and (C) 3-25 wt.% of a polymer having a solubility parameter(SP) of 8.45-8.70 and not containing an aromatic vinyl compound unit in the polymer. |
