CONTAINER CASE FOR PRESERVING FRESHNESS

摘要

PROBLEM TO BE SOLVED: To provide a container case equipped with effects for preserving freshness. SOLUTION: A porous inorganic substance comprising zeolite or silica being a metallic ion carrier having effects for preserving freshness is scattered in hydrophilic binder such as starch, polyvinyl alcohol or acrylic binder and this is dispersed or applied on an internal face of a paper container and a corrugated fiberboard box, thereby providing a freshness preserving layer.