LOW FOAMED ETHYLENE POLYMER RESIN SHEET THERMOFORMED OBJECT AND PRODUCTION THEREOF

摘要

PROBLEM TO BE SOLVED: To obtain a low foamed ethylene polymer resin sheet thermoformed object having proper flexibility and capable of being subjected to deep drawing sharp in draw shape while keeping a foamed state good by using an ethylene polymer resin having specific foaming magnification. SOLUTION: A foaming agent is compounded with an ethylene polymer resin and the resulting compound is melted and kneaded under such a temp. condition that the temp. of the resin is 170-240 deg.C in a usual kneading extruder and extruded from the slit of a die to produce a low foamed ethylene polymer resin with foaming magnification of 1.01-3 times and a thickness of 0.1-5mm. In a sheet thermoformed object, recessed parts 2a or protruding parts 2b are formed to the low foamed sheet. Concretely, a molded object such as an ampule case 1 wherein recessed parts 2a coinciding with an ampule shape are formed to the low foamed ethylene polymer resin sheet 2 or recessed parts 2a coinciding with a can shape are formed to a laminated sheet wherein a high foamed polyethylene resin sheet is laminated to the rear surface of the sheet layer 2 is obtained.