The gap between the most popular solvent-free comp

2022-08-01
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The gap between solvent-free compounding technology at home and abroad is narrowing.

as an internationally recognized green technology, solvent-free compounding technology has been widely used in the world and has become the leading technology and development direction in the field of composite flexible packaging

the solvent-free composite technology showed the calibration zero point in the European development system in the mid-1970s. After more than 30 years of development, as an internationally recognized green technology, solvent-free composite technology has been widely used in the world and has become the leading technology and development direction in the field of composite flexible packaging

foreign solventless compounding machines

are widely used

at present, the proportion of solventless compounding technology in Europe and the United States has reached more than 70%, and the proportion in new compounding machines is as high as 80%~90%

currently, the solvent-free compounding machine manufacturers recognized internationally as leading in overall technology are mainly from Germany, Italy, Spain, France and Japan. Their general maximum mechanical speed is about 350 m/min, a few reach 450 m/min, and the maximum is 600 m/min. At present, the speed of the solvent-free recombiner imported from China is 200 m/min. The impact spline is cooled by liquid nitrogen to 350 m/min. Other countries and regions, such as India, Brazil and Turkey, can prepare antibacterial fabrics. Although they are also produced by manufacturers, the technical performance level is low

domestic solventless compounding machine

catching up with the gap

China began to introduce solventless compounding machine in the middle and late 1990s. Due to various subjective and objective reasons, although the solvent-free laminating machine has been introduced for many years, the use effect in the past has not been satisfactory for a long time. Objectively speaking, the main reasons are as follows: first, solvent-free compounding is still a new technology in China, and the domestic talent system is difficult to meet the requirements; Secondly, the product adaptability and technical support of foreign suppliers have not been fully in place; Thirdly, the high price of equipment and adhesives limits the scope of application

according to incomplete statistics, by the end of 2011, China had installed about 100 sets of such equipment. Despite the rapid growth in the past two years, the total number of solvent-free laminating machines accounts for only 2% ~ 3% of the total number of laminating machines, which is not only far below the level of developed countries and regions such as Europe and the United States, but also far below the world average level

progress in adhesive technology

promoting the development of solventless composite products

replacing imported products with domestic equipment and adhesives, localizing foreign products and providing complete process support are the necessary conditions for the promotion and application of solventless composite technology. It is gratifying that Guangzhou Tongze Machinery Co., Ltd., as the only system supplier with solvent-free composite equipment and process as the leading product in China, has developed a number of patented products after years of unremitting efforts, which can provide complete sets of equipment with different uses and specifications and related technical support for various flexible packaging enterprises and adhesive manufacturers

the development of domestic solventless composite adhesives is very rapid, and the quality and output have been significantly improved. At present, there are many solvent-free composite adhesive manufacturers in China, mainly including Shanghai Kangda chemical new materials Co., Ltd., Beijing GAOMENG new materials Co., Ltd., Yantai Wanhua Beijing Research Institute, Huzhou oumei Chemical Co., Ltd. In general, domestic adhesives have basically met the market requirements, and there is a trend to surpass imported products in some aspects

in recent years, with the continuous enhancement of people's awareness of environmental protection, health and safety, as well as the continuous increase of costs, emissions and other pressures, people's attention and demand for solvent-free compounding have become increasingly strong, especially the continuous improvement of domestic solvent-free compounding equipment and adhesives, the continuous strengthening of the popularization of solvent-free compounding technology, and the number of new solvent-free compounding machines has doubled, The development of solvent-free composite technology in China has presented an unprecedented good situation

according to systematic product structure analysis, it has brought confidence to extruder enterprises. Most of China's existing composite packaging products (about 80% or more) can be completed by solvent-free composite process. Therefore, solvent-free compounding will have a very broad development prospect in China

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