Technology in the process of carton die cutting
We are a big printing company in Shenzhen China . We offer all book publications, hardcover book printing, papercover book printing, hardcover notebook, sprial book printing, saddle stiching book printing, booklet printing,packaging box, calendars, all kinds of PVC, product brochures, notes, Children's book, stickers, all kinds of special paper color printing products, game cardand so on.
For more information please visit
http://www.joyful-printing.com. ENG only
http://www.joyful-printing.net
http://www.joyful-printing.org
email: 860681365@qq.com
Dust and loose fibers are termed flat die-cutting terms used to describe damage to equipment consumables at the die-cut edge of a carton. In practice, the term refers to the production of loose particles and debris, as well as the accumulation of fibrous filaments that adhere to the die-cut edges of the paperboard. It should be noted that most of these particles and fibers come from surface printing tools for die-cut cardboard. This raises three questions:
1. How to carry out the flat die cutting process?
In order to accurately describe the flat die cutting process using a steel die-cutting die, this process will be defined as a moving process, which consists of two progressive steps. The first step is called "blasting penetration" and the second step is called "blasting separation" equipment consumables.
In the simultaneous die-cutting process, the full length of the die-cutting edge contacts the surface of the die-cut material in equipment consumables. When die cutting, the die cutting edge applies a pressure middle print on the paperboard material. Although we describe die cutting as a cutting process, more precisely, this is a process material that breaks the cardboard under pressure. As the tool drills into the cardboard toward the anvil pad, the surface of the cardboard is squeezed, stretched, and compressed with equipment consumables. Finally, the surface of the cardboard could not withstand the effects of these pressures, so the printing technique was broken in a "blasting penetration" manner.
The term "blasting" is used to describe the cracking of the surface of the paperboard most accurately. However, because the blade exerts a strong stretching force and compressive force on the paperboard, the surface of the cardboard along the die cutting edge collapses in central China. After the surface of the cardboard has been broken, the sharpness of the die cutting edge is not as great as that of the previous step because the double bevel of the tool wedge translates the vertical pressure into a lateral movement force printing alliance. When the tool penetrates the board, the beveled face of the tool pushes the board vertically to the central China.
Under strong breaking pressure, the cardboard is completely torn to the printing union before the cutter and the anvil pad are in contact. This "blasting separation" process is divided into surface rupture, tool wedging and cardboard breakage in central China. Even under outdated production conditions, as long as it is equipped with sharp steel knives, smooth liners and an optional die-cutting system, the paperboard still breaks the middle print under strong burst pressure.
2. What caused dust and loose fibers?
What caused dust and loose fibers? Dust and loose fibers were caused by damaged die-cutting blades, and the extra force caused the blade to hit the surface of the liner board printing market. Thereby the blade is widened, so that the pressing force and the stretching force exerted on the surface of the cardboard greatly increase the equipment consumables. The cardboard is further compressed and the tension is slowly increased until the cardboard breaks the equipment consumables. This process is overstretched, producing a coalition of debris and "dust" molecular printing.
As the pressure on the tool increases, further compression forces cause the blade to blunt the printing tool. The cardboard is compressed and stretched to a greater extent than normal, and its surface breaks into three printing tools. From the description of this process, we can conclude that the dust and loose fibers come from the surface of the cardboard, which is caused by the progressive damage of the die cutting edge.
3. How to avoid the generation of dust and loose fibers?
The way to avoid this problem is to keep the steel blades in good condition and equipment consumables. There are several methods to choose from. In practice, one of them can be used alone, or multiple methods can be used at the same time.
These methods are: using a soft or "small thickness" die-cut liner; calibrating the flat die cutter to prevent excessive force; calibrating and balancing the pressure on the die cutter to ensure accurate "Z-axis control" of the blade The “floating knife” method is used for the important tools in the production planning; the double-board and regional repair technology is accurately integrated into the joint repairing process to make the press-cut even in central China.