| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide an inexpensive paper container which does not generate in sealing a pinhole, a foam or a blister in a thermoplastic material layer for sealing, maintains seal strength, from which a liquid content does not leak, to which contents can be filled and packaged easily, is quickly heat sealed, whose heat seal strength is satisfactory, which is sealed satisfactory with no influence of the temperature of the filled contents, and has a smell keeping or a quality maintaining characteristic. SOLUTION: This paper packaging container is made of a packaging material including at least each of the constituent outside thermoplastic material layer, paper base material layer, and inside thermoplastic material layer. The inside layer contains at least a linear low density polyethylene having such characteristic parameters as an average density of 0.910-0.930, a peak melting point of 115 deg.C or higher by a differential thermal analysis, a melt-flow index of 5-15, and a swelling ratio of 1.3-1.8.</p> |
