With the steady development of the national economy of our country, under the support of the relevant government leaders and the joint efforts of colleagues in the paper packaging industry, China's paper packaging industry has made considerable progress.
(I) Development status In 1997, the output of packaging paper reached 3.969 million tons, and the output of packaging board reached 10.81 million tons. The sum of the two accounted for 54% of the total paper and board production in China; according to the statistics of China Packaging Technology Association, from 1992 to 1997 In the year, paper packaging products increased from 3.6 million tons to 8.35 million tons. The speed of development in the industry also reflected the rapid growth of paper packaging materials and products. The development speed of paper product packaging during the “7th Five-Year Plan†period was 12%. During the “Eighth Five-Year Plan†period, paper packaging products developed faster and the development speed reached. 14%, locals are optimistic about its broad market prospects, on a number of projects, many good paper products companies have been varying degrees of technological transformation, technical level and production efficiency have greatly improved. In the "Ninth Five-Year" development plan for the packaging industry in China and the long-term development goal in 2010, green packaging has also been clearly listed as the focus. The development direction of packaging products during the Ninth Five-Year Plan period was firstly paper packaging products. It is predicted that the demand for paper packaging products in China will exceed 9.2 million tons in 2000, and the demand in 2010 will exceed 19 million tons.
In paper packaging products, the proportion of carton boxes is the largest. Taking 1996 as an example, the proportion of carton in paper packaging products reached 74.2%. Since the initiative initiated by the Shanghai Department Store in the use of carton packaging in August 1960, China's carton packaging and its machinery industry have gone through nearly 40 years of development. By the early 1980s, China had introduced three and a half carton production lines (one half of which was used in conjunction with domestic equipment). In the middle and late 1980s, localized corrugated board production lines and subsequent forming and processing equipment were put on the market one after another in the 1980s. In the wake of the introduction of three wave surges and localized development booms formed during the past 20 years of the “Ninth Five-Year Plan†period, China’s paper packaging industry, such as paper boxes, cartons, and paper bags, has made great strides. At present, this situation has already emerged. Large-scale carton production capacity (more than 20 billion m2 or more) seems to be a bit too much for the number of equipment owned, as well as the supply of middle and low-grade production lines and processing molding equipment exceeds demand.
In 1998, the total output of China's cartons was 11.2 billion m2; according to incomplete statistics (included 92-95%), there were 1243 corrugated board production lines (hereinafter referred to as tile lines), of which 407 were imported production lines, only between 1990 and 1998. On the introduction of slightly higher grade tile lines (of which more than 2.2M wide high-speed tile line 23), single-sided corrugated board production line (three sets of units) more than more than 3,000 sets of single-single order vintage carton Tens of thousands of production machinery. During this period, more than 800 sets of printing slotting machines, folding gluing machines, die cutting machines and other processing and forming machinery were introduced. The installed capacity of such domestically-made equipment also reached more than 2,000 sets, and a multi-process combination of medium and low grades was introduced. The main processing equipment, and the corresponding local production capacity of paper packaging machinery has also grown rapidly, can produce medium and low-speed tile line packaging machinery enterprises have reached 27 (10 backbone manufacturers), production of various grades of printing slot Up to 38 manufacturers of machines have been established; manufacturers of flat-plate flat die-cutting machines have also grown from 2 in 1990 to 8 in the near future; a total of 40 companies that produce a large number of nail box machines and automatic and semi-automatic glue box machines Yu Jia. In addition to E, F, D and other small corrugated single-face corrugated board production line and single-face corrugated machine, the above-mentioned 27 companies can provide equipment, veneer (laminating and laminating) machine, sticky (paste) box machine, window laminating machine There are also more than 20 equipment manufacturers, such as glazing machines and platform die-cutting machines, coating and coating machines, flat pressure indentation die-cutting machines, and rotary die-cutting machines. As for the small carton machinery factories that produce hundreds of single-machine and simple multi-order carton processing machines in Hebei Dongguang County, they do not plan to count the macro statistics.
Looking at China's packaging industry today, it can be said that it has developed rapidly, has a complete range of categories, and has certain domestic equipment supply capabilities. However, there are still equipment and equipment behind, low degree of automation, small scale of production, high cost, low efficiency and weak technical power. There are many shortcomings. At the level of process technology, there are still some differences and gaps between the industrial structure and the development trend of the industry, which provides opportunities for future development and leaves a vast market space. The current problem is that the paper packaging machinery of mainland manufacturers is worse than the similar equipment produced in Taiwan by half or a beat in terms of structure and technology, and there are blind pursuits of high-speed and ultra-high-speed production lines in developed countries. Some innovative structures are intended to be used on our medium-speed or high-speed lines, despising the indicators of technical and economical rationality, and ignoring the structural upgrading of online stand-alone machines and less efficient investment.
(II) The trend and market competition bring about changes in the number and level of equipment. It will inevitably bring about tremendous technological progress. The brief history of the development of cartons (boxes) in developed countries in Europe and North America proves this trend, and the production of China's carton industry is bound to The modern carton production should have wide-format, high-speed, non-stop-changing specifications and adapt to the highly automated features of multi-species and extremely small batch production. Must have high-speed automation and very small batch (micro) orders can also carry out rapid high-speed production of the flexibility, this modern production line and complete processing and molding equipment, in order to "this is a low-profit" carton industry belt live, out Low efficiency and loss predicament. Intensive production and economies of scale are the characteristics and trends of modern industrial production.
In 1995/1996, the number of cartons and corrugated board production lines in the United States was 1447/1352 and 566/556 (sets), respectively. The output was as high as 374.3 billion m2/37.94 billion m2. Back in history, in 1977, the United States had 740 tile lines, a slight increase of 760 in 1982, and then decreased year by year: 643 in 1986 and 561 in 1994. In recent years, it has remained at the level of 560-555 installed capacity. on. This shows from a certain point that the operation of the US carton factory equipment on-line reconstruction and abandonment of old (rather than adding a new tile) operation has been very active, not always holding a technologically backward, narrow-format, low-performance production line is not The reduction in the number of equipment year after year is an inevitable development. This is contrary to the trend of linear rising of tile-laying equipment in China in the past two decades. This is related to the emphasis on not paying attention to the renewal of the technological structure of equipment and the on-line (local) technological transformation of key single machines in tile lines. China now has a large number of narrow (1.6M), low speed (V<100m/min) and low performance (that is, it can not adapt to many varieties of very small batches can also be continuously automated production and does not have high operational and large flexible adaptability) These middle and low-grade production lines will reach the same level of saturation as the developed countries. They will reduce the installed capacity year by year and replace them with high-speed, wide-format, high-performance production lines. In fact, this trend has begun to take shape. When the equipment is renewed or newly added, Beijing Carton Factory, Kunshan New Factory, Shenyang Kexun Group and other industry veterans or large manufacturers went straight to wide-width, high-speed production lines and high-grade box processing equipment; and the closure of small and medium-sized plants or mergers The matter is audible. For example, according to the China Packaging News report on September 2, 1998, there were 160 carton factories in Nanjing, and the number of recent bankruptcies or mergers was as many as 31. This situation was found in Guangdong, Hunan, and other more developed provinces and regions. Have. Therefore, the updating and online reconstruction of the old 1.6M tile will inevitably bring about a relatively large market demand for affordable prices and moderate performance of wide-width lines, and the single-sided machine, computer slitting line and computer crosscutting in tile lines. Machines, automatic splicing machines and constant tension control systems, etc., have been added and modified, which involves the major issues of making full use of the base paper, speed increase, and reduction of consumption and efficiency. This is the preferred target. At present, carton factories with good returns in Guangdong, Fujian, and Shandong have accelerated the pace of online transformation.
In view of the large number of tile lines in China and the small number of equipment and corresponding configurations for subsequent processing into box equipment, the current state of incompatibility with their technical level, and some post-processing equipment with more advanced shortages and technological structures, if the performance-price ratio is moderate, It can also be a new type of additional purchases, such as fine dot-printing medium and large-format printing slotting machines and printing slotted folding gluing machines; good performance, affordable semi-automatic gluing machine with a simple strapping machine; do not run rules, guarantee Die-cutting precision rotary die-cutting machine and rotary die-cutting machine with a good printing part; multifunctional and adjustable range adhesive box machine and folder-gluer that can bond a variety of carton boxes (boxes); can stick labels and composite color printing Multifunctional new-style veneer (ply laminating) machines, etc. In particular, a high-speed veneer laminating machine that can fit a low-quantity (90g/m2) glossy paper, and a multi-purpose laminating machine that opposes the positional alignment—is not a traditional domestic same-tracking and aligning device. The cover machine will be the trend of development in the near future.
China's tile line equipment is too large, and the variety and quantity of equipment processed into boxes is relatively small, making many large carton factories to sell their own corrugated cardboard in addition to their own cabinets. The small and medium carton factory specializes in making boxes. This is in Guangdong and Shanghai. This is not uncommon, which has led to the need for post-processing machines and finishing equipment such as printing slots for improving the structure of low-priced products. The United States all-round carton plant box production accounted for 84-86%, there is no "tile" line processing only carton box processing carton plant production accounted for 16-14%; single tile three-layer corrugated board production accounted for 89.4%, double tile five-layer cardboard The output accounted for 9.1%, the production of three-watt seven-layer corrugated board accounted for 0.5%, and the production of single-sided corrugated board accounted for 1% (every year in the past). In our country, on the contrary, five-layer corrugated cardboard accounted for more than 96%, but the strength of the three-layer corrugated cardboard box was not recognized.
In China, there are tens of thousands of carton factories and ten million cartons of users. Insufficient research and planning to save paper will cause great waste. In the future, the carton industry should continue to strictly save the base paper, develop high-quality and light-weight technologies for packaging paper and paperboard, rationally use lower-grade base papers, develop appropriate packaging, and make every effort to upgrade and update equipment. High-tech applications and structural updates are another development trend for cartons (boxes) and other paper packaging industries and their machinery. Since the 1990s, the carton industry has entered the stage of more widespread application of electronic computers and high-tech. Microprocessors and microelectronics digital technologies are not only used for the electronic control devices and mechanisms of carton (box) machines, but also Widely used throughout the entire production process of monitoring, regulation and production, marketing management, CAD, CAM applied to paper container design, carton (box) mechanical structure design and difficult key components (such as corrugated roller, ink roller) manufacturing Laser technology is applied to the secondary superhard quenching of corrugating roller surface, engraved anilox roller, cutting stencil and line knife processing of die cutting machine, etc. These have been applied in China in a certain number and range. Currently, there are five carton machinery factories that have developed centralized central control systems for computer slitters, computer crosscutting machines and tile lines, which implement automatic control of the whole process of carton production, but they are not subject to downtime in terms of operational flexibility and flexibility. There is still a slight difference between the specifications and the adaptation to the very small batch orders and the speed indicators and the similar equipment in the advanced countries, and the reasonable matching of all equipments on the domestic line and the high-performance basic elements, devices and machines, electricity, gas, liquid, and transmission The use of integrated components of sense, display, and hospitality institutions did not reflect the optimal combination of optimal selection and proper import of imported parts. They affected the performance and level of the entire line to some extent. The domestic paper packaging machinery factory also uses CAD and CAM technology more extensively. The ink roller used for ceramic coating and laser mesh processing has been trial-produced and produced from the imported set of British equipment and domestic equipment. Only the technical level of precision and fine processing has been adopted. To be further improved, laser graining processing should not only be limited to the closed-type four-sided or six-sided pyramid-like pit-like shape, but the development of new inking textures such as scaly, mottled lines and reticulate shapes. It is still necessary to introduce more advanced laser precision processing equipment or domestic research and development, and it is necessary to move to a higher level to solve the high-grade printing quality problem of the carton box.
In order to solve the mechanical structure innovations such as the high operational performance, flexibility, and high-speed efficiency of the equipment, such as the corrugating machine quick change corrugating roller system, the beltless double-sided machine, the rapid thermal conduction and the sensor automatic control device for the tile line drying department. As well as the chamber-type scraper ink metering system for the printing slotting machine printing department, it has just begun to develop in China. It has not yet formed industrial production and application results. The import of such equipment technology is expensive, and it is not suitable for medium and low-speed tile lines. The majority of China's carton industry status. At present, three quick-change corrugating roll single-face machines have been introduced. The above-mentioned high-grade printing slot machines have also been introduced into China with seven sets. Domestic people have also seen the benefits brought by the new technology structure.