How to prevent moisture from the carton

In the application of cartons, we will find that the surface roughness, smoothness, gloss and water absorbability of whiteboard printing have a great influence on the moisture resistance of cartons. Therefore, it is necessary to emphasize that these technical indicators should be required to meet the national standards so as to improve the moisture resistance of cartons. In particular, the whiteboard using the polishing process in the post printing process, the poor quality of the paper coating is easy to absorb oil, so that the paper surface lacks the due oil layer and brightness, and it is easy to absorb the water from the outside.

At present, according to the requirements of the national standard GB/Tl0335.4-2004 "coated white paper" and technical requirements, three kinds of white board paper are coated, including the top quality products, first class and qualified products, with the white bottom and the ash bottom, and the technical indexes are different.

In the production process practice, it is found that the whiteboard with high quality grade has higher brightness after polishing, and on the contrary, the brightness is obviously lack and its wet resistance is poor. Therefore, according to the different quality of food and the difference of temperature and humidity in the environment of sale, the selection of the suitable grade of whiteboard for printing can not only take into account the economy of appropriate packaging, but also achieve the quality requirements of moisture proof packaging and market use.

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