subject: Exchange of experiences: the paper characteristics affect the cutting results - after printing, die cutting - Printing Industry [print this page] Exchange of experiences: the paper characteristics affect the cutting results - after printing, die cutting - Printing Industry
Stable size for the same access to clean and repeatable cutting results with a very important role. Both leaflets of corrugated cardboard, or rolls of coated paperboard, material strength can greatly affect the final product quality paper products. At the same time cutting tools of the final product will have a greater impact, but to facilitate the issue of, can assume that there is no problem cutting tools. In most cases, cutting tools and cutting jobs require paper features uniform.
The current industry has pricing without regard to bursting test and paper weight and other factors, so test compression test and breaking it into paper products production and sales of an important reference. The cutting and processing properties of paper itself has a very specific demand. On brown corrugated cardboard blank for die-cutting process may be difficult for the smallest, but take the paper path and feed unit is still very critical, and in the cutting process to maintain a high alignment accuracy. Moisture content throughout the board to change l is very small, or always remain the same.
Cardboard paper mill paid great attention to consistent moisture. This paper to install a humidity control device equipment. Cardboard and other key parts of the edge of humidity control is particularly significant. Corrugated board manufacturing equipment is also equipped with humidity control device. Corrugated edges used to control humidity and moisture bonding. To maintain humidity in the final in this regard, adhesive, and heating temperature are two important technical parameters. With the system from the single-sided corrugated cardboard box production to double and three-tier, multi-direction of corrugated boxes, paper and humidity become more important. Paper properties, corrugated sheet and the die bonding process have increased the complexity, but also to make some changes in processing quality is high.
Round die-cutting efficiency higher than the die-cutting, even when using the quality of different cardboard production and processing also have a good effect. As the round die-cutting with a continuous feed mode, the alignment also easier to register to operation requirements. Paper and corrugated sheet impact of changes in humidity is relatively small. However, the strength, especially in the surface stability, there are still differences. Steel cutting tools will have more scraps of paper, but also caused less damage because very strong steel cutting tools, on board the impact is greater.
Composite materials of cutting tool theory, easily damaged paper materials, but with 100% recycled paperboard in its normal operation when the relatively long time, and scraps of paper produced very little, but the cardboard production friction is relatively large.
Coated paperboard and modern cutting and processing
Die in compression and shear-type cutting operations using soft printing plates, so cutting board formed under pressure, then separated from live parts. This can greatly improve the cleanliness of cutting live parts and the knife-edge clarity, the next process to facilitate any type of indentation work. In the low-volume cutting operations in the board's choice for the best quality of operations is of paramount importance.
Some coated cardboard, such as coated kraft liner board, white thick cardboard recycling soil, the price is very expensive. The coating is used such as titanium dioxide, and latex paint directly coated civilian housing on the cardboard. Conducting coating on the surface before the strict control of humidity and the strength of base material properties, as these features on the coating quality has some impact. Should be firmly attached to the substrate coating to avoid delamination, equivalent to Office cracking, fragmentation and so on.
Unfortunately, often at lower cost commercial paper under great pressure, often to the expensive cost of materials as the target. These pressures often impact most businesses by industry, as commercial paper is less than the cost of all materials, all variable costs of 5%. As a paper products, processors may be used in cheaper cardboard paint, but the risk larger. Therefore, paper products, processors should choose the paper more attention to quality of the coating business.
Coating quality is the key
Folding carton production today the most common device is equipped with a pressure-type cutting device cutting a narrow range of flexographic printing machines.
