A laminated packaging material for liquid food products, a method for making the same, a method for printing on the same and a package made from the same

Abstract

A laminated packaging material (1) for liquid food products comprising, a core layer (4) of paper or paperboard or other cellulose-based material, a laminate portion (3) being arranged on a first side of the core layer (4), a dark colored flexographic ink composition (2) printed onto the free surface of the laminate portion (3), the dark colored ink composition comprises color bases mixed at a ratio such that a total energy absorption by the dark colored flexographic ink composition (2), when provided on the laminated packaging material (1), is below 80%, such as below 70% in an emission spectra from a tungsten light source in the region 250-2500 nm at a temperature of 3000 K, the dark colored flexographic ink composition (2) has a color space lightness value L* <= 25, and a color space difference ([delta]E2000) equal to or lower than 6, with respect to a specified black reference composition.

Description

technical field [0001] The present invention relates to a laminated packaging material, and more particularly to a laminated packaging material comprising an ink composition, such as a dark ink composition. Background technique [0002] Today, various techniques are used to print graphics, such as decorative patterns and / or text, on laminated packaging materials for liquid food. Many of these techniques involve different methods of applying ink rotary press (rotary press) to a moving web of packaging material to print static content, and where the content to be printed is pressed onto the laminate by a roller press and then dried Or cure to remove any water or solvents. A typical such printing technique is flexographic printing using water-based ink compositions. Therefore, if a large surface area of ​​laminated packaging material is to be printed, a significant investment is required to manufacture and control a large print station / press that covers all the laminated mate...

AI Technical Summary

Problems solved by technology

Inkjet printed areas are detectable by observing print resolution and dots are not perfectly aligned at high speeds

[0004] Therefore, if printing static graphics is combined with pressing techniques and digital printing to print dynamic content, there may be problems with laminating packaging materials when drying the inks as they have different water contents in the inks used for different technologies

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