Usually, the surface paper of pre-printed corrugated boxes is white board paper corrugated paper, which is on the outermost layer of corrugated boxes when laminating, so it is most likely to be exposed to outside air moisture. Therefore, some technical indicators of white board paper also directly affect the moisture-proof performance of the entire carton.preroll ling size box
According to the practical experience of the production process, the surface roughness, smoothness, gloss and water absorption of the white board paper have a great influence on the moisture-proof performance of the carton, so when ordering, it must be emphasized that these technical indicators should be controlled within the national standard range, or even required It can also be higher than the national standard to improve the moisture-proof performance of the carton. Especially for white board paper that uses glazing technology in post-press processing, the poor coating quality of the paper surface is easy to absorb oil, so that the paper surface lacks the proper oil layer and brightness, and it is easy to absorb external moisture.
In accordance with the national standard GB/Tl 0335.4-2004 “Coated White Board Paper” and the requirements of technical indicators, coated white board paper is divided into three types: high-quality products, first-class products and qualified products, and there are white and gray backgrounds. There are certain differences in indicators. In the practice of production technology, it is found that the white board paper with high quality grade has higher brightness after glazing, otherwise, it obviously lacks brightness and its moisture resistance is also poor. Therefore, according to the different quality grades of food and the differences in the temperature and humidity of the sales environment, choose the appropriate grade of whiteboard for printing, which can not only take into account the economy of moderate packaging, but also better achieve moisture-proof packaging and meet the quality requirements of the market. regular cigarette case
Post time: May-08-2023