| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a polyethylene-based resin multilayer expanded sheet having extremely small transition amount of a lower molecular weight component to objects to be packed while having antistatic performance.SOLUTION: A polyethylene-based resin multilayer expanded sheet is a multilayer expanded sheet obtained by co-extrusion of a polyethylene-based resin (A), a molten resin for forming an expanded layer obtained by mixing a high molecular weight-type antistatic agent and a physical expansion agent, and a molten resin for forming a surface layer obtained by mixing a polyethylene-based resin (B), and having a surface layer laminated on at least single side of the expanded layer, and both of the polyethylene-based resin (A) and the polyethylene-based resin (B) are polyethylene-based resin having n-heptane extraction amount of 0.5 wt.% or less at 50°C, the blended amount of the high molecular weight type antistatic agent to the expanded layer is from 3 to 15 wt.% based on 100 wt.% of the total of the polyethylene-based resin (A) and the high molecular weight type antistatic agent, and the thickness of the surface layer is from 2 to 10μm.</p> |
