The paper itself is not smooth, curly, in printing, die cutting, paste box, box shape beauty will be affected. Paper deformation is mainly reflected in the following aspects.

(1) deformation caused by the crimping of web itself. Now most color boxes are printed on web paper, and some also use imported web paper. Due to the restrictions of the site and transportation conditions, the import of web paper to be cut in the domestic, the storage time of the paper after cutting is generally short, coupled with the capital turnover difficulties of some manufacturers, now buy now, so most of the paper after cutting are not completely flat for printing processing. The situation is much better if you buy cut sheets directly.

(2) deformation caused by the change of water content of the paper. The moisture contained in each paper must be evenly distributed, and must be balanced with the surrounding humidity, otherwise, over time, there will be "lotus edge" and "tight edge" phenomenon, affecting the final box shape beautiful. For cutting good paper, stacking time should not be too long.

Ruian Tianbang Machinery Manufacturing Co., Ltd. specializes in the production of paper lunch box machine, multi-grid (sub-grid) lunch box machine, three-dimensional box forming machine, bento box forming machine, more information, please pay attention to the official website www.tb-jx.com