| 摘要 |
PROBLEM TO BE SOLVED: To provide a packaging material capable of being manufactured at low cost by a comparatively simple manufacturing process, without employing a metal film such as aluminum foil, etc., and which is provided with enough light-blocking property. SOLUTION: The packaging material is constituted of a layered body having at least a sealant layer 30 which is laminated on a backing material film layer 10 through the medium of an adhesive layer, and the adhesive layer is characteristically mixed with coloring agents. COPYRIGHT: (C)2004,JPO&NCIPI |
