Current Status Of Slitting Machine Technology And How To Face Digitalization

With the continuous development of information technology, digital technology is playing an increasingly important role in different fields. The same is true in the packaging industry. The technology of domestic film slitting machine has been continuously improved, and there have been obvious breakthroughs in speed, width, control and comprehensive performance. Digitization has also become an important direction for the development of domestic slitting machines.

Many packaging materials often go through multiple processes such as slitting, printing (or coating), laminating, and slitting before being used for packaging articles, but the cutting methods in each slitting process are not the same. Common slitting Ways are:

(1) Trimming, cutting off the process margin reserved for the previous process, mostly used for the processing of composite films and other materials;

(2) Cut, cut the wide web into multiple rolls of narrow size material;

(3) Sub-rolling, dividing the large-diameter material into several rolls of small-diameter material, which is equivalent to rewinding and so on. These methods are sometimes mixed and used. No matter which process is used, the material after slitting should meet the corresponding technical indicators: size requirements (referring to the width and length of the slitting material, etc.) and quality requirements (the flatness of the coil, Surface quality, etc.).

Manufacture and purchase of qualified slitting equipment must not only meet these technical indicators, but also must consider the following two factors: operating efficiency, which mainly includes the working speed of the equipment, stability and the difficulty of machine operation, etc.; economic performance refers to the The scope of application of the material, the processing limit size, and the price of the equipment, energy consumption, etc.

With the continuous development of packaging technology and the improvement of packaging grades, the performance requirements of packaging materials for the packaged items have become increasingly prominent, and many materials with special properties have emerged, such as aluminized films with shading effect and high surface quality requirements. CPP film with higher rate, multi-material composite film with high barrier properties, etc. The continuous application of various new materials has promoted the rapid development of the flexible packaging market. With the growth of market demand and the development of special application fields, the requirements for packaging material slitting are getting higher and higher, and the requirements for slitting equipment are becoming more and more demanding. On the other hand, with the gradual promotion of automatic packaging equipment in the packaging industry, such as food packaging, cigarette packaging, etc., these automatic packaging machines are very picky about the quality requirements of the materials after cutting, which gives the cutting machine to the high-end , High-precision control brings a broad space for development.

In the past, high-precision, high-speed slitting machines used by domestic enterprises were mainly monopolized by a few foreign manufacturers. Regarding the development of domestic slitting machines, there is such a vivid analogy in the industry: the early slitting machine has a simple structure, with a speed of about 100m/min, and the mechanical friction method of the winding tension is manually controlled. People call it "telephone". Later, after some modifications, the winding is controlled by a clutch and other methods, and a single motor controls the traction and winding. The speed is below 200m/min, which is called the "simulation machine." From then on, the new automatic high-speed slitting machine uses Digital automatic control, the speed is above 300m/min, just like the "digital machine" in the modern communication field.

With the improvement of technical capabilities of domestic enterprises, different manufacturers have introduced digitally controlled high-speed slitting machines. The following introduces the high-speed digitally controlled slitting machine produced by several domestic manufacturers to get a glimpse of the latest development of domestic slitting technology.

New concept of intelligent slitting
Intelligent slitting has absorbed many advantages of previous slitting machines. It adopts the central winding method and the latest digital control and drive technology. The stable working speed is 300~400m/min, the unwinding diameter is 800mm, the winding diameter is 500mm, and the minimum winding width is 30mm. In addition, the film splicing table, waste edge treatment system, and cutter conversion system specially designed for this machine are all ingenious, and more options can meet the specific requirements of more customers.

The digitally controlled man-machine dialogue system makes the operation more convenient. The slitting machine can slit PE, PP, PVC and PET film, paper and composite film. The entire design takes high speed, high efficiency, high precision, and high reliability as the basic requirements, allowing customers to truly experience the excellent performance of the high-quality, cost-effective slitting machine at a moderate price.