| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a paper packaging container which exhibits excellent performance in extrusion lamination characteristics and its converting characteristics, is easy to make a wrapper, can be rapidly heat-sealed when filling a package, and has aroma retention ability or quality retention ability. <P>SOLUTION: The paper packaging container is formed of a wrapper comprising an outermost thermoplastic material layer, a paper base layer, a barrier layer and an innermost thermoplastic material layer. The innermost thermoplastic layer contains a linear low density polyethylene and has characteristic parameters of an average density of 0.900-0.915, a peak melting point of 88-103°C, a melt flow index of 5-20 and a swelling ratio of 1.4-1.6. A seal face layer of a strip covering the through-hole of a spout contains a linear low density polyethylene and has characteristic parameters of an average density of 0.900-0.915, a peak melting point of 88-103°C, a melt flow index of 5-20 and a swelling ratio of 1.4-1.6. <P>COPYRIGHT: (C)2010,JPO&INPIT |
