China's packaging machinery industry was formed in the late 1970s and early 1980s. In the 1990s, it entered a period of rapid development. At present, it has entered the period of product structure adjustment and innovation. The development of heavy bag packaging machinery in China has also been continuously developed with the improvement of cement bags and other large-capacity packaging bags. In the case of cement packaging, with the iron barrels, wooden boxes, straw bags, sacks and later multi-slit paper bags, the development of today's bagged cement based on new materials and new bags has passed. A long journey. At present, the development of the world's advanced packaging machinery has shown the momentum of integrating machine, electricity, gas, liquid, light, magnetism and life. The high efficiency of production, energy saving and recycling of products, high-tech practical and intelligent Into the trend, this should also be the mainstream development direction of China's packaging machinery industry. In terms of product structure adjustment, it is necessary to change the status of low-tech content as soon as possible, learn advanced foreign technology, develop large-scale complete sets of equipment and high-tech products with high efficiency, low consumption, production and sales, and develop suitable packaging equipment according to national conditions. Accelerate the upgrading of packaging machinery and further develop domestic and international markets. This paper focuses on the current status and development direction of heavy packaging bags and their bag making equipment. The status quo and development direction of woven bags and woven machinery In the late 1970s, China introduced plastic woven bags, and then introduced weaving equipment. The woven packaging is quickly applied to many fields due to its durability, low cost and simple manufacturing process, especially for large-capacity transportation packaging. Plastic woven bags for cement packaging began in 1982. Hundreds of plastic knitting production lines have been introduced from different countries, and there are also more than 20 complete sets of complete sets of equipment. Since the mid-1980s, China, Zhejiang, Jiangsu and other places have successfully developed domestically produced equipment and put them into the market in large quantities, which has contributed greatly to the development of China's woven packaging industry. In the 1990s, woven packaging was rapidly developed. By 1995, 6.2 million woven bags for cement packaging accounted for two-thirds of the total cement packaging in that year. The implementation of the GB9774-1996 "cement packaging bag" standard has given the woven bag making enterprise and the woven bag equipment manufacturing industry a stimulant, and various grades of plastic knitting factories and woven equipment manufacturing plants have sprung up. Appeared. However, from the perspective of the overall industrial structure and scale of the plastic knitting industry, there are scattered and small phenomena; most enterprises have only one production line. Due to the small scale of the enterprise and the insufficient production capacity, it is difficult to integrate with the international market. It is difficult to form a series of woven products, and it is difficult to achieve technological innovation. In recent years, many entrepreneurs have seen this, formed a woven group, and some areas have also emerged as a woven city; After years of superiority and inferiority, some enterprises that have certain advantages, operate well, and innovate are able to stand still and achieve development, and many small and weak enterprises have withdrawn from the industry. The production of plastic woven bags in China began in the 1980s, about 20 years later than developed countries, and is currently in a period of rapid development. However, the technical content of the products is low, facing the requirements of foreign orders, due to the lack of technology and equipment, can only hope to sigh. In terms of scale, China's container bag enterprises have formed small-scale enterprises with independent product development capabilities, and can only produce low-grade, low-value-added products with rough workmanship and simple performance. For the production of high-end container bags such as food, chemical, aquatic bags, container bags and pallet bags with waterproof, breathable, mildew proof, sunscreen, safe and flameproof, environmentally friendly and many other functions, there is no advanced special equipment and testing in China. equipment.
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