Patent ID: 7285318

Claim:
A packing material for wrapping an article to be packed by heat-sealing end parts superposed one upon another to pack the article to be packed, wherein the packing material is composed of a biodegradable film and heat sealing agent layers are selectively provided in mutually superposed and heat-sealed positions or areas including the heat-sealed positions when the article to be packed is packed, wherein the heat sealing agent layers are formed by dissolving any heat sealing agent of ethylene vinyl alcohol-chlorinated polypropylene, ethylene vinyl alcohol, or polyester in an organic solvent and selectively applying the obtained heat sealing agent on the heat sealing positions of the biodegradable film or the heat-sealed parts, wherein picture pattern layers are provided on the biodegradable film as well as the heat sealing agent layers, wherein the heat sealing agent layers and the picture pattern layers are formed within a range of 70% or less as large as the entire area including the front surface and the back surface of the biodegradable film and about 30% or more as large as the entire area including the front surface and the back surface is exposed.