Advanced Packaging Paper - Characteristics of Whiteboard Paper

Whiteboard paper has a relatively uniform fibrous structure. The surface layer has the composition of fillers and rubber compounds, and the surface is coated with a certain amount of coating material. After a multi-roll calendering process, the texture of the paperboard is relatively tight and the thickness is relatively uniform. The paper surface is generally uniform. In this case, it is whiter and smoother, with a more uniform ink absorption, less surface de-powdering and lint-free, paper is stronger and tougher and has a better degree of folding, but its water content is high, there is a certain Flexibility, which will have a certain impact on printing.

Whiteboard paper is made from batter and all layers of bottom pulp. Therefore, the slurry is generally divided into batter (surface layer), two-layer, three-layer, and four-layer. The fiber ratio of each layer of pulp is different, and the fiber ratio of each layer of slurry is based on the papermaking process. The quality is different.

Whiteboard paper is a relatively high-grade packaging paper, printing a variety of trademarks and packaging boxes, such as: children's toys, medicines, food, cigarette cases, toothpaste, gift boxes and other packaging. Whiteboard paper is divided into two grades: special grade and universal one, and it has one-sided and two-sided distinctions. 250g/m2 weight
280g/m2, 350g/m2, 400g/m2 and so on.

White paper has a white and smooth paper surface, a uniform thickness, a tight texture, no off-powder lint, and a uniform ink absorption, small stretching performance, toughness, and not easily broken when folded.

1. The white paper has a high moisture content. Generally about 10%, due to the thick paper, hang hanging equipment and time constraints, so most printing companies do not hang hanging on the printing. However, preprinted water is often used to reduce the phenomenon of pulling and stretching.

2. White paper Under normal circumstances, in the printing process to print more products in the field, with a large amount of ink, in order to reduce the phenomenon of pulling hair, printing inks should be strictly controlled the viscosity and the thickness of the ink layer to prevent the back to take dirty. Usually, the printing product is used to dilute the ink on the spot. First, the base color is printed once, and then the original ink is printed again. This not only reduces the phenomenon of pulling and sticking, but also doubles the printing. Also increased the gloss of printed products.

3. One-sided whiteboard paper is prone to curled paper when it is in contact with moisture, which may affect the offset printing. However, double-sided whiteboard paper is better. At the same time, because the paper is thicker, it is easy to tear the rubber when double-sheet, multiple-sheet, or skewed when feeding, so be careful when feeding paper.

4. The difference between white paper and coated paper, offset paper and letterpress paper lies in the fact that the paper is heavy and the paper is thick.

Source: Shenzhen Xinli Measurement Technology Co., Ltd.