PREPARATION OF FOAMABLE RESIN PELLET

摘要

PROBLEM TO BE SOLVED: To obtain a method for preparing an unfoamed foamable resin pellet from which a foamed body with good surface flatness can be stably and easily obtd. SOLUTION: A foamable resin molded body is extruded from an extruder and the foamable resin molded body is made fine to prepare foamable resin pellets 11. In the foamable resin pellets 11, fractionalization is performed while the vicinity of a ridge A formed by the first face 11a crossing the extrusion direction X of the foamable resin molded body and the second face 11b being in parallel to the extrusion direction X is scraped in such a way that the length of sides 11e and 11f formed by connecting the edge A to the sides 11c and 11d being parallel to the edge A becomes short by at least 1/8 of the original length.