POLYETHYLENE-BASED OPEN-CELLED FOAM AND PRODUCTION METHOD THEREOF

摘要

PROBLEM TO BE SOLVED: To provide a method for producing polyethylene-based open-celled foam that is suitable as cushioning material used for a mask with excellent recovery after compression, and others.SOLUTION: The method for producing polyethylene-based open-cell foam includes: heat-foaming, in a non-air tight mold, a foamable and crosslinkable composition obtained by adding a foaming agent, a crosslinking agent, a foaming-auxiliary agent and others to 30 to 50 pts.wt. of polyethylene resin produced by use of metallocene catalyst and 70 to 50 pts.wt. of ethylene-vinyl acetate copolymer, and kneading the same, to form a cellular foam; followed by mechanically deforming the same to make the cell into an open cell.