METHOD FOR PRODUCING LIGHTPROOF PAPER PACKAGING MATERIAL, LIGHTPROOF PAPER PACKAGING MATERIAL, SEMI-PAPER PACKAGING MATERIAL AND LIGHTPROOF PAPER PACKAGING CONTAINER

摘要

A method of manufacturing a light barrier paper packaging material and the light barrier paper package container with low cost, no need of an ink removing apparatus at reproduction step and easily recycle are provided. ??A light barrier paper packaging material which comprises the paper substrate and the laminate layers on the paper substrate comprises: the paper substrate having a clay coat layer applied to the paper substrate; a light barrier layer printed with black Ink on the day coat layer; cover-up layers printed with white color ink to the light barrier layer a plurality of times; an outside laminate layer of thermoplastic resin formed on the cover-up layer, and design printed to the outside laminate layer.