Development trend of die cutting tool market (I)

The quality of die-cutting tools directly affects the quality of die-cutting products. Due to the selection of die-cutting knives and different die-cutting processes, the quality of formed products also fluctuates. For example, round-press die-cutting die-cutting equipment has serious burrs during the production of cartons. It is likely that the pressure is too great and the local blade is damaged, causing the phenomenon of easy fluffing. At this time, the platen pressure must be used to balance the die-cutting pressure. It may also be The use of a softer plastic bead after sagging for a period of time does not guarantee the folding effect of the indentation. After pressing, the blade quickly becomes dull and fluffing; due to the inconsistent specification of the die cutter, the die-cutting pressure is taken up. The sponge at the end of the discharge, discharge, and retreat is higher than the height of the die cutter. The sponge with poor quality has poor recovery ability. After being cut for a period of time, it is compacted and shortened, which is lower than the height of the die cutter. All the die-cutting pressure is applied to the blade, and the blade quickly becomes blunt and fluffing occurs. . In addition, there are several quality issues related to die cutting tools and their causes:
First, the indentation line is not clear, there is a "dark line" or "fry line", "dark line" refers to the indentation line should not have: "broken line" refers to the pressure due to die-cutting indentation, exceeding the cardboard dimension The endurance limit makes the cardboard dimension broken or partially broken.
(1) Improper selection of indentation line and indentation pattern.
(2) Improper pressure adjustment of the die cutter, too large or too small.
(3) The thickness of the fixed pad adhesive pad is not accurate, and the pad is too low or too high.
(4) If the paper quality is too bad or the water content of the paper is too low, the crispness of the paper increases and the toughness decreases.
Second, the indentation line irregularity The reason for this failure is: indentation mold slot width is not suitable; die cutter blade seam is too wide, indentation line in the die-cut indentation pressure under the effect of twisting .
Third, folding folder, such as cardboard outside the indentation line cracking, the reason when the indentation line is too deep or indentation mold width is not enough; if the cardboard inside the cracking, the die-cutting indentation pressure is too large, so that paper-dimensional fracture.
Fourth, die-cutting cardboard glue knife version, also known as "glue version", the cause of this failure is: the rubber around the die-cutting knife thin rubber or rubber hardness, causing lack of resilience: steel knife edge is not sharp , The paper thickness is too large, causing the knife to stick when cutting or cutting.
5. The dispersal caused by die cutting is mainly related to the plate making process and the ejecting of the strip (or sponge). The causes of the failure are the following: Die cutting points are small and there are few points. If the shape of the work is complex or there are many jobs, and the die-cutting joints are small and the joints are small, then it is easy to cause die-cutting. If the sponge is too soft, the paper cannot be smoothly removed from the die-cutting knife or indentation line. So it's scattered.
When selecting a flexo press, the need for die cutting must be taken into consideration. When selecting a flexo press, the width should not be narrow and the width should be wide. Except for increasing the investment for machine reconciliation, the increase in cost during use is not proportional. Taking a round die cutting die as an example, the price is determined by the length of the drum, the size of the circumference (number of teeth) and the total length of the die cut line. When the width is doubled, it is self-evident that the length of the drum is doubled. However, there is a proportional requirement between the length and the diameter of the drum. In order to meet this technical requirement and ensure die cutting quality, it is possible to increase the number of drums. Diameter, in this way, the total length of the circumference and die-cut line should be increased, so the width is doubled, and the price of the die-cutting roller is more than doubled. Flexographic printing presses are usually equipped with 3 standard die-cutting stations and 4 die-cutting stations for indentation, embossing, die-cutting, slitting and cross-cutting.
When the width of the selected model is wide, the die-cutting tool lifting device should be selected because the die-cutting tool is heavy. The die-cutting tool lifting device is installed above the die-cutting station to lift the die-cutting drum. Some models are equipped with two sets of lifting devices because the distance between the first and last two-stage die-cutting stations is longer.
Jigsaw Requirements for Die Cutters In fact, die cutting puzzles do not have to use steel molds. It is generally necessary to die-cut jigsaw puzzles. The steel knife used is slightly different from the ordinary beer press box. The beer box steel knife will use a height of 23.8mm, a width of 0.71mm, and the width of a popular knife (Puzzle knife) is 0.45mm. Therefore, the use of laser cutting technology to do more than map wood will have higher accuracy, high repeatability, long-lasting advantages. If the jigsaw has a certain pattern of die cutting, such as die-cutting figures and animal designs, it is not possible to open the transverse straight die-cut. Only the complete cutting of the wooden sample is required, but it is necessary to pay attention to the flatness of the whole layout after cutting and the difficulty in scattering. When cutting puzzles with bottoms, use high and low knives to make die cuts, so that the puzzle pieces will be scattered into plastic bags or the whole puzzle will be delivered with better controllability.
CNC computer machete machine CNC computer machete machine is generally controlled by a computer. It is equipped with machetes, cutters, bridges, and olecranon in one operation. Once installed, it can be installed by pressing a computer (you do not need to install a card to use a disk knife). The instruction completes the processing of a workpiece with high speed and precision, effectively guarantees the closeness and precision of the blade connection, and is particularly suitable for the production of high-precision die-cutting plates, ensuring the consistency of die-cutting tools. The blades made by CNC computer machete machines are widely used in industries such as cartons, cartons, plastics, and handicrafts (including greeting cards, gaskets, and leather).
Die-cutting tool manufacturer Chongqing Huaxi Sanli Packaging Tools Co., Ltd. is the first professional manufacturer in China to introduce advanced German equipment, use high-quality steel strips, and use modern production technology and international product standards to produce high-precision die-cutting tools. The company developed the "Sanli" die cutter in May 1996 and now has more than 20 varieties. Due to the superiority of product quality and the variety of products, it can meet the requirements of various aspects of the packaging, printing industry, leather, plastics, rubber and other related products in the industry, and is particularly suitable for die cutting of large quantities of products. "Sanli" die cutter products: flat die cutters, flat plate indentation lines, round die cutters, special cutter lines.
The French Komori Shangbang Company is the only printing press manufacturer in the world to produce roller die-cutting workstations and cutting tools. Over the years, Komori-Sangbang has been the world leader in the drum die cutting technology. For different materials, different shapes and sizes of products, it can provide users with different drum die cutting solutions. Especially in tobacco and liquid packaging has a wealth of experience, with a number of unique patented technology.
The cutting material of the die-cutting tool must be matched with the die-cut material, thickness, and machining shape as shown in the following table.
The development trend of the world's tool market The roller die-cutting and drum-type indentation process is the last process of the printing automatic line. It is also the first process of the automatic packaging machine, so the drum die cutting and roller indentation process technology has played a role. The key role of printing and packaging is the link between the two. With the introduction of a large number of printing automation lines, the production of soft gravure plates has been rapidly developed and improved. With the changes in the market, the rhythm of new product replacement is accelerating, and more and more attention has been paid to the appearance and packaging of enterprise products. The requirements for drum die cutting technology are also required. More and more high, the demand for die-cutting is also increasing. Therefore, the requirements of the knife material are getting higher and higher.
According to reports, the demand for cutting tools in the world continues to grow. Among them, European and North American countries have maintained stable growth, particularly in Eastern Europe; Asian markets have seen a slight recovery and the market has great potential; the Latin American market has grown significantly, especially Mexico. (To be continued)