How to understand and judge whether it is a really good copy paper? 1. Check whether its appearance is smooth, delicate, and uniform light transmittance (i.e. evenness); 2. Check its physical strength performance, pull it with a hand to check whether the vertical and horizontal tension is high, good copy paper has high vertical and…
The size of packaging paper printing needs to be accurately mastered. Because fruit is a kind of food, its shelf life is not long, and it is easily damaged during transportation and carrying. Therefore, it is necessary to provide packaging manufacturers with accurate dimensions to prevent unstable fruit collisions caused by excessive edge gaps. However,…
The thickness, tightness, smoothness, dustiness, water content, pH of packaging paper printing paper and its influence on offset printing. (1) Thickness. Refers to the thickness of the paper, the thickness of the paper should be uniform, otherwise it will cause obvious differences in the printing effect. (2) Tightness. Tightness refers to the degree of looseness…
