The current situation and development trend of hea

The current situation and development trend of heavy bag packaging and bag making equipment in China

China's packaging machinery industry was formed in the late 1970s and early 1980s. It entered a period of rapid development in the 1990s. At present, it has entered a period of product structure adjustment and improvement of innovation ability as a whole. The development of heavy bag packaging machinery in China is also developing with the improvement of cement bags and other large capacity packaging bags. Taking cement packaging as an example, with the development of iron drums, wooden boxes, straw bags, gunny bags and later multi-layer seam paper bags, it has gone through a long process to develop today's bagged cement based on new materials and new bag types

at present, the development of the world's advanced packaging machinery has shown a momentum of integrating machinery, electricity, gas, liquid, light, magnetism and production. The high efficiency of production, energy conservation and recyclability of products, practicality of high and new technology and intelligence have become a trend, which should also be the mainstream development direction of China's packaging machinery industry. In terms of product structure adjustment, we should change the situation of low technology content as soon as possible, learn from foreign advanced technology, develop and produce large complete sets of equipment and high-tech products with high efficiency, low consumption and the right production and marketing, develop suitable packaging equipment according to national conditions, accelerate the upgrading of packaging machinery, and further explore the domestic and international market

1 current situation and development direction of plastic textile bags and plastic textile machinery

in the late 1970s, China introduced plastic textile bags and then textile equipment. Plastic textile packaging is rapidly used in many fields, especially for large capacity transportation packaging, because of its advantages of durability, low cost, simple manufacturing process and so on. Plastic woven bags have been used for cement packaging since 1982. Hundreds of plastic woven bag production lines have been introduced from different countries, including a dozen complete sets of relatively complete and high-level equipment. Since the mid-1980s, China's Zhejiang, Jiangsu and other places have successfully developed domestic equipment and put it on the market in large quantities, which has made great contributions to the development of China's plastic woven bag packaging industry

the production of plastic woven container bags in China is about 20 years later than that in developed countries, and is currently in a period of rapid development. However, few container bag enterprises in China have formed a scale and have independent product development ability, and can only produce low-grade products with low added value. There is no advanced special equipment and testing equipment in China for the production of high-grade container bags and pallet bags with many functions, such as waterproof, breathable, mildew proof, sun protection, safety and fire protection, and environmental protection

after more than ten years of development on the basis of digesting and absorbing the technology of similar foreign products, China's plastic knitting machinery manufacturing industry has basically ended the history of imported equipment, and Chinese products have gone abroad, occupying a certain market share with the advantage of performance price ratio in the Middle East, Southeast Asia, Russia and even the United States. However, it should be clearly seen that compared with foreign products, there is still a gap between China's plastic knitting machinery. A considerable number of plastic knitting machinery are of low grade, low automation and poor reliability, which urgently need to be upgraded

at present, the plastic weaving equipment in China should be developed in the following aspects: the drawing machine, laminating machine and other units adopt microprocessor centralized control, process parameter setting and display digitization, perfect temperature control system, internal coating technology; Circular loom: improve the manufacturing accuracy, reduce the rolling of shuttle wheel flat wire, reduce the driving power of shuttle, improve the speed, reduce the broken end rate and improve the sensitivity of the automatic stop device after weft breaking; The printing press is developing towards double-sided and multicolor; Specialization of accessories production; The development of special equipment is a top priority for container bags

2 status and development of paper bags, composite bags and bag making equipment

seam multi-layer paper bags are traditional bag types of heavy bag packaging. At present, they are also used in some cement and aluminum body F150 industries with great success, such as chemical raw materials and grain feed. Its bag making equipment basically uses the high-level roll former barrel beating machine in the early years, and then sews with a sewing machine. The seam paper bag with a valve port has a valve port at one corner. This type of bag has been used for many years and is in the trend of being phased out. The equipment has also been aging and needs to be updated

paste bottom bag is an internationally popular preferred bag type, which has become the leader in heavy bag packaging with the following ten characteristics: high firmness, low cost, improving the loading speed, easy to realize the automation of bag inserting, good environmental protection performance, improving the production efficiency of bag making, improving the stability of stacking, making full use of the storage and transportation capacity, strong self-reliance, and easy to identify

since the 1980s, industrial developed countries have basically completed the transition from seam bottom to paste bottom. Since 1989, China has successively introduced from Germany the production line of paste bottom paper bags with the world advanced level in the 1980s, ending the history of manual paste bags in China. Some achievements have been made in changing joints into paste, and the development of special equipment has also made progress

paste bottom packaging bags can be used to contain powder, grains, flakes, flocs, thick materials, such as cement, grain, seeds, starch, feed, chemical fertilizer, chemical raw materials, mineral powder, tea, medicinal materials, etc. In recent years, with the improvement of packaging, it is also used to contain dense materials such as asphalt, paraffin, paint and coating, which can partially replace steel drum packaging

at present, the development of multi-layer paper bag pasting equipment is mostly based on the digestion and absorption of foreign technology. Domestic imitation equipment has been produced in Jilin, Henan, Guangdong and Shandong, which is close to the level of foreign countries in the 1980s, and basically meets the requirements of domestic production of multi-layer paper bags

laminated plastic woven paste bottom bags are ideal packaging for chemical raw materials, fertilizers and other materials. At present, most of the bags used in China are sewn bottom bags. Due to the high price of imported bag pasting equipment, domestic enterprises can't afford it, which hinders the process of packaging export products in line with international standards. The first domestic multifunctional plastic woven bag life complete set of equipment independently developed by China has been successfully pilot produced in Qingdao, marking that similar products in China will no longer rely on imports

new composite paper material?? Reinforced paper fills the gap at home and abroad, but it brings new problems to the bag pasting unit. The function setting of the existing multi-layer bag pasting equipment can no longer adapt to it, and the applicable domestic equipment has been produced

new shipping packaging?? The paper-based large capacity liquid material packaging bag (hereinafter referred to as liquid packaging bag) is a major reform of the traditional iron barrel and plastic barrel packaging

the liquid packaging bag has the outstanding advantages of three Proofs (moisture-proof, anti-corrosion, anti-seepage) and three Proofs (strong pressure resistance, impact resistance, and aging resistance), which overcomes many disadvantages of packaging in iron barrels and plastic barrels. Many materials originally packaged in iron drums and plastic drums can be directly replaced by liquid packaging bags. In developed countries, they have begun to be popularized and their scope of use has been continuously expanded. In China, professional equipment suitable for national conditions has been developed

to sum up, the development direction of paper bags, composite bags and their special equipment has the following characteristics: bag pasting equipment should be developed with multi-function; The dynamic circle is allowed to conduct specific operation tests on the static self loading system bag pasting equipment, so when you buy it, you should know some standard data, and then contact us to develop it. You should implement both high-grade and popular models suitable for small and medium-sized enterprises at the same time; The laminating plastic woven bag pasting equipment should be developed in the direction of using heat sealing process instead of adhesive process; Develop special functional barrel making equipment; Continue to improve the performance of special bag making equipment for liquid packaging bags to make it more compatible and meet the huge market demand

3 intellectualization is the development direction of plastic machinery

experts predict that intellectualization will be a new direction of plastic machinery development. In recent years, China has prevented the hidden dangers of gas and coal dust accumulation, and the specialized production has developed rapidly. Parts such as feeding devices, screws, barrels, reducers and quick change devices can be produced by themselves. The delivery period has been shortened to months, about 13 times that of the past; Product varieties are developing to diversification, such as various injection molding machines, extruders and blow molding machines, especially injection molding machines. Large and super large products have come out one after another. Experts pointed out that high-precision plastic machine is the research and development goal, and more electronic technology and networking technology should be integrated. Machinery that can realize automatic control will become the protagonist of the future market