| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a composite resin particle that can produce a foam molding whose temperature dependence of the various physical properties such as falling ball impact value and mechanical properties (such as drop impact resistive compressibility and drop impact resistive property), is suppressed.SOLUTION: Provided is a composite resin particle characterized in comprising a polyethylene-based resin (PE) and a styrenic resin and in which the PE and styrenic resin are contained by a range of 50 to 20 mass% and 50 to 80 mass%, respectively, per total of said resins, the PE is composed of a first PE having a density from medium to high of 930 to 950 kg/mand a second PE having a linear-chain shape and a density lower than the first PE, the first PE and second PE are contained in a range of by 90 to 30 mass% and 10 to 70 mass%, respectively, per total of said resins, and the first PE has a number average molecular weight Mn in a range of 25,000 to 50,000 in terms of polystyrene conversion, a Z average molecular weight Mz in a range of 700,000 to 1,300,000 and a Mz/Mn in a range of 20 to 50.</p> |
