| 摘要 |
PROBLEM TO BE SOLVED: To provide a lid material for press-through pack capable of attaining sufficiently-high bar code reading accuracy both before and after heat seal with excellent press-through property and without interposing a white solid printing layer, and to provide a press-through pack package including the same.SOLUTION: A lid material 8 for press-through pack includes a colored film 4A containing a thermoplastic resin and a coloring agent as much as 0.5 pt.mass or more and 10 pts.mass or less with respect to 100 pts.mass of the thermoplastic resin, and a bar code printing layer 5 provided on one surface of the colored film 4A. In the region provided with the bar code printing layer 5, a symbol contrast value measured by a bar code verification machine is 40% or higher. |
