| 摘要 |
PURPOSE:To eliminate a strip tape by improving the heat-sealability. CONSTITUTION:A packaging container has a packaging material 11 of which the outermost layer 15 and innermost layer 14 are confronted at both side edges, an external strip 20 which is heat-sealed between the outermost layer 15 and innermost layer 14 along a longitudinal sealed part, and a strip tape 25 equipped with an external layer and an internal layer, which is heat-sealed along the longitudinal sealed part on the internal side of the packaging container. Then, the innermost layer 14 of the packaging material 11 and the external layer of the external strip 20 are formed of a non-olefine based aroma- retaining resin, and the outermost layer 15 of the packaging material 11 and the internal layer of the external strip 20 are formed of a polyolefin based resin. At the longitudinal sealed part, the polyolefine based resin is welded to each other, and the heat-sealability becomes higher. |
