NON-CROSSLINKED LINEAR LOW DENSITY POLYETHYLENE PREEXPANDED PARTICLES AND MANUFACTURING METHOD THEREFOR

摘要

RESIN PARTICLES MADE FROM A RESIN MIXTURE OF 30 TO 70 WTOF A LINEAR LOW-DENSITY POLYETHYLENE I HAVING A RESIN DENSITY OF 0.930 TO 0.935 G/CM3 AND AN MI OF 1 G/10 MINUTES OR HIGHER AND 70 TO 30 WTOF A LINEAR LOW-DENSITY POLYETHYLENE II HAVING A RESIN DENSITY OF 0.915 TO 0.925 G/CM3 AND AN MI OF 2 G/10 MINUTES OR HIGHER ARE IMPREGNATED UNDER PRESSURIZATION WITH A VOLATILE EXPANSION AGENT, AND RELEASED INTO A LOW-PRESSURE ATMOSPHERE TO YIELD NON-CROSSLINKED LINEAR LOW DENSITY POLYETHYLENE PREEXPANDED PARTICLES, WHICH WHEN SUBJECTED TO EXPANSION MOLDING INSIDE A MOLD, EXHIBIT GOOD MOLDABILITY, AND YIELD MOLDED ARTICLES THAT HAVE AN ATTRACTIVE EXTERNAL APPEARANCE AND EXHIBIT OUTSTANDING CUSHIONING PROPERTIES.