Current situation and development prospect of flex

The current situation and development prospect of flexible packaging machinery and equipment in China

since 1993, several backbone enterprises have invested in the development and trial production of domestic high-speed gravure printing machines. In, the prototype production was completed, and the accuracy should meet the requirements of the "certificate of conformity" of the experimental machine, which is used in user assessment. Mass production began in 1997, and the replacement samples basically need to be replaced frequently. The replacement samples can be divided into the following three types:

1) medium width and high precision: Yaa microcomputer controlled high-speed gravure printing machine and YAB computer centrally controlled high-speed gravure printing machine of Shantou Huaying flexible packaging equipment General Factory; A2 j60700a unit type computer gravure printing machine of Shaanxi printing machine equipment Co., Ltd; Shantou Shanzhang Light Industry Machinery Factory SGF series computer automatic control high-speed gravure printing machine. This series of products has a wide market, mature technology and high application value. Based on the seven color gravure printing machine, the price is about 10000 yuan

2) it has automatic overprint control system, but the overall configuration is general intaglio printing, such as Debao yad71000d, yad6600d computer chromatic intaglio printing machine; Wenzhou Shenli ya6600, ya61000 computer gravure printing machines; Haining Yiqiao djzy-600 computer chromatic intaglio printing machine and other products have complete width specifications, medium-range accuracy and low price. Based on the seven color intaglio printing machine, the price is about 10000 yuan

3) wide width and high precision: azj601050h high-end unit gravure printing machine of Shaanxi printing machinery equipment factory, sgnc digital controlled high-speed gravure printing machine of Shanzhang Light Industry Machinery Factory, with printing width of 1050mm and printing speed of 150mm/min. Their main structure and control system configuration have reached the level of similar imported equipment. They are the main products that replace imports. Based on the seven color gravure printing machine, the price is about 10000 yuan. At present, the manufacturers with rapid development include Shaanxi printing machine factory, Shantou Shanzhang light industrial machinery factory, Shantou Huaying flexible packaging equipment General Factory and Zhongshan Debao Packaging Machinery Co., Ltd. With the development of gravure printing machines, gravure printing machines suitable for tipping paper, coated paper, white cardboard and aluminum foil have also entered the market one after another

looking at the situation of several representative gravure printing machines in China, the following are:

1. The design structure of the whole machine is advanced and has various functions of foreign advanced models

2. Strong configuration: including AC variable-frequency closed-loop vector multi motor servo synchronous control system, automatic copy overprint control system, pre drive full-automatic connection system, automatic tension control compensation system, industrial computer central control system

3. High machining accuracy and rich design experience

4. The process quality of high installation and commissioning is low, which affects the exertion of equipment effect

5. The quality management level and awareness of enterprise processes need to be improved in order to comprehensively improve the quality level of the whole machine

in terms of future development, from the perspective of technical input of backbone enterprises, gravure printing machines with printing speeds ranging from 150 m/min to 250 m/min will enter the market in 2003. Due to the two key technologies of gravure printing machine: tension control technology will be improved; The drying control technology related to tension will also be improved

II. Dry laminating machine and wet laminating machine

in view of the insufficient technical investment of enterprises in this product, the grade of domestic dry laminating machine has been low. With the demand of domestic flexible packaging industry and the high price of imported equipment, domestic high-speed wide width dry laminating machine has gradually entered the market, and has played a major role in supporting the production of imported gravure printing machines

representative manufacturers include: gf-1000b Ⅱ industrial computer-controlled high-speed dry laminating machine of Huaying factory (ex factory), sdp1000 computer full-automatic high-speed laminating machine of Shanzhang factory, lm-wet/1000 high-speed dry laminating machine of Huazhou factory. The maximum working speed is m/min, and the price is about 10000 yuan. (the GLM -dry-n/1000 high-speed dry laminating machine controlled by Huazhou industrial computer has not been delivered yet). Zhongshan Debao fhg1000c, Wenzhou Shenli and Haining light machinery's 1000 series dryers (programmable by some microcomputers) have a machine speed of 100-130 meters per minute. All functions have reached the level of similar imported equipment, and the price is about 10000 yuan

the domestic high-end high-speed dry laminating machine has the functions of pre drive and automatic connection of winding and unwinding, automatic tension control function of each section, synchronous control function of speed (tension) of cloth applicator and compound roller, servo control function of steam heating temperature, full machine programmable control and industrial computer control

the future development will further improve the machine speed by about 200 meters/minute, improve the manufacturing accuracy and the stability of the control system. Adaptability to meet the needs of imported gravure printing machines and domestic high-speed printing machines. Wet laminating machine and various substrate coaters have also been greatly developed. In the future, the main direction is to develop solvent-free laminating machine, hot melt adhesive coater and high barrier material coater

III. extrusion laminating machine

at present, there is no professional factory for large-scale production of extrusion laminating machine in China. In addition, there is a large gap between the technical level of die head and extrusion screw and that of import. However, the main domestic flexible packaging equipment manufacturers have the design and production capacity of the equipment. As long as users can bear the price of imported dies, they can produce goods that reach the level of Japan and South Korea in the 1990s. The price is about 10000 yuan

representative manufacturers are: Jiangmen Huilong, Zhongshan Debao, Xuzhou Machinery Factory. Their extrusion and lamination speed is less than 120 meters/minute, and the price is about 10000 yuan. The stability needs further assessment. It can be said that there is no manufacturer trusted by users at present. In the future, we should improve the technology and quality level of domestic die, realize the automatic detection and control level of machine speed and extrusion volume thickness error, and develop multi-layer coextrusion composite equipment to meet the needs of the product industry. In 2000, it is expected that domestic high-grade extrusion laminating machines with thickness measuring devices and automatic feedback control of machine speed and extrusion volume will enter the market

IV. slitting machines

the level of domestic slitting machines is uneven. If the annual output of each slitting machine less than 100000 yuan is more than 300. The manufacturers with higher overall strength, such as Huazhou factory, Hanzhen machinery factory and Zhongshan duyuan, have a machine speed of 250 meters/minute. Recently, Hangzhou Dahua introduced a slitter with a width of 1400mm and a speed of 400m/min using West German technology. Wuxi beiren also launched a full-automatic high-speed Slitter with a machine speed of 300 meters/minute, but it is difficult to mass produce and is accepted by the market

1) produce high-speed slitting machines with wide width and machine speed of/min, so as to meet the substitute import demand of the base material factory

2) if ultra-thin substrate and special substrate (coating film) are inorganic organic composite material slitters. In addition, the design of each riding roll of the winding shaft increases the technical development, improves the control level of parameters such as diameter, speed and light dynamic inertia that affect the tension by automatic calculation, and ensures synchronous coiling at high speed, with accurate and stable tension control

v. bag making machine

China's bag making enterprises used to mainly produce narrow width full-automatic bag making machines. Most of the large-scale color printing plants have imported Japanese wide width equipment. In recent years, China's top 600 wide bag making machines have successively entered the market, with a total of less than 30 sets/year. The main manufacturers are Shanghai No.3 light machinery factory, Wuhan light machinery, Wuxi Cathay Pacific, Shantou Huaying

there is a large demand for bag making machines below the medium width in the domestic market, with an annual output of more than 1000 sets. The main manufacturers are Shanghai No.3 light machinery factory, Shantou Huaying, Shanghai Zhongfu, Wuxi Nanfang, Haining Fengtu, Shandong Wendeng and other factories. Their machine speed is less than 120 segments/min after the successful transformation of this scientific and technological achievement in jiayitong

in the future, improve the overall quality level of wide bag making machine. Pay attention to improving the mechanical structure to achieve high speed; Diversified bag making varieties (self-supporting bags, zipper bags, etc.); Improve the accuracy and speed of automatic alignment; Introduce automatic monitoring technology

VI. development trend of flexible packaging equipment in the future

China has 1/5 of the world's population and is the largest consumer market in the world. Flexible packaging equipment has great market potential. In addition to continuously improving the quality level of various single machines, attention should be paid to the development of environmentally friendly agent free coating and laminating machines, laminated (satellite) flexographic printing machines, multi-layer coextrusion and high barrier material coating equipment (PVDC), and silicon dioxide vacuum coating equipment

flexible packaging equipment integrates machinery, electricity, light, gas and liquid. High mechanization and automation is one of the important signs of the development of packaging equipment, and domestic enterprises have gradually acquired these capabilities. Therefore, manufacturers of flexible packaging equipment should pay attention to the development of electromechanical combination, combination of main and auxiliary machines and complete line connection, pay attention to the application of energy-saving raw materials and heating components (such as micro electric heating elements, heat pipe technology, etc.), and strengthen the development of automatic and computerized systems. It is believed that through the joint efforts of colleagues in the production line of flexible packaging equipment, especially the strong support and joint development and application of backbone product factories in the industry, China's flexible packaging equipment will be greatly improved in the next few years, meet the development needs of the domestic packaging industry, and catch up with the advanced level of foreign development