Development status of the hottest printing and dye

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The development status of printing and dyeing machinery industry

[ppzhan Abstract] in recent years, the printing and dyeing machinery industry has developed rapidly, and new technologies and equipment continue to emerge. Moreover, under the influence of national environmental protection policies, energy conservation and environmental protection have become one of the development directions of the printing and dyeing industry

in the past two years, due to the continuous emergence of new dyeing and finishing processes, new technologies and new equipment at home and abroad, the printing and dyeing machinery industry has been booming. Energy saving and environmental protection are the sustainable development direction of the printing and dyeing industry in the 21st century. Short process and automation technology, plate free printing technology, low-temperature plasma treatment and other new technologies and water free processing technology are the development trend of future dyeing and finishing machinery. Since 2002, China's textile industry has achieved great development, the speed of industrial upgrading has been greatly accelerated, and the purchase of textile machinery equipment has also increased rapidly. In 2002, the import of printing and dyeing and finishing machinery was 618 million US dollars, accounting for 19.4% of the total amount of imported equipment, ranking second; In 2003, China imported 978million US dollars of printing and dyeing and finishing machinery, accounting for 21.10% of the total amount of imported equipment, ranking first

at present, the general trend of the development of dyeing and finishing equipment technology is to develop towards environmental protection, energy conservation and consumption reduction, time saving, short process, and pay attention to new technologies such as anhydrous processing technology, plate making printing technology, low-temperature plasma treatment, etc; Another important trend is to widely adopt automation technology, and the transmission system adopts AC variable frequency multi unit synchronous speed regulation system; In terms of control system, programmable logic controller (PLC) or industrial computer control (IPC) are widely used, and parameter monitoring is widely used, which improves the automation of dyeing and finishing equipment, and greatly improves the process stability and reproducibility

With the development of dyeing and finishing industry, modern information control technology with computer as the main body has penetrated into all fields of dyeing and finishing machinery. Electromechanical integration, automation, man-machine dialogue, process setting, automatic detection and control, remote diagnosis and other means of dyeing and finishing equipment are widely used. In terms of environmental protection technology for ecological dyeing and finishing, the textile industry has developed rapidly. Manufacturers at home and abroad pay more attention to environmental protection and energy conservation. Dyeing equipment pays attention to the efficiency of equipment in the design scheme, which is conducive to ecological environmental protection, and strives to optimize the dyeing process, reduce the consumption of chemicals and energy, so as to achieve the purpose of high speed and short process

dyeing and finishing production shows the development trend of short process and rate, and the corresponding short process and rate process. However, the sensor adopted by Shanghai xinrenda Instrument Co., Ltd. is American, with high precision. Generally, it can be used for more than 150000 times, mainly including cold pad batch pretreatment, wet short steam pretreatment, roll mercerization, cold pad batch dyeing, wet short steam dyeing, roll dyeing and high liquid feeding device

the trend of personalization, comfort, functionality and fashion of textiles promotes the development of dyeing and finishing equipment to adapt to the trend of small batch, multiple varieties and one machine with multiple uses

capture the plastic waste gathered together with the movement of water. The current trend of dyeing and finishing in the world is to develop new technologies and equipment based on the ecological concept, and to start research and development in combination with processes, dyes, additives and other channels. For example, the use of anhydrous processing technology, plate making printing technology, low-temperature plasma treatment technology, nanotechnology, biological enzyme technology, etc., makes the process flow of dyeing and finishing shorter, the production efficiency higher, and the product performance better. The new technology and equipment mainly include the following aspects:

new process for continuous treatment of knitted fabrics

continuous open width dyeing and finishing of knitted fabrics, which not only improves the quality, has little damage to the fabric, but also has good flexibility and reproducibility, and can reduce the production cost by about 10% - 15%, the improvement of mercerizing machine. The nominal width of 3200 mm, 3400 mm suitable for woven fabric processing ultra wide cloth clip straight roll mercerizing machine. A five roll or two roll thread micro stretching device is added between the straight roll alkali soaking area and the mercerizing stability area, which can effectively prevent the weft shrinkage of the fabric after being soaked in concentrated alkali. Digital jet printing. Digital jet printing with printing technology revolution, printing speed has reached (360dpi) more than 25 square meters/hour

alkali concentration monitoring. The alkali concentration computer monitoring system developed by Xi'an Degao Jiamei printing and dyeing Co., Ltd. has a good man-machine interface. The whole machine is controlled by a large-size color LCD touch screen, which has intuitive display, convenient operation and clear status at a glance; Through PID regulation, it can realize good control without excessive, with high precision and stability

in recent years, the electromechanical integration of dyeing and finishing equipment in China has been improved to a certain extent, and the application scope of electronic technology has been expanding. Emphasize modularity and building blocks in product design; The electric drive is stable and reliable, and the tension is adjustable, so that the man-machine environment can be fully coordinated. However, there is still a considerable gap between China's dyeing and finishing equipment and the advanced level of foreign countries. For example, the automatic control and program control are poor, and the monitoring is not really solved; Remote monitoring and fault diagnosis technology is not available in China; Quantitative titration and automatic feeding are not matched. The main gaps are as follows: the detection technology of process parameters of dyeing and finishing equipment: in the process of pretreatment, mercerization, dyeing, steaming and finalization of dyeing and finishing, the detection of some process parameters has always been the key technical problem of dyeing and finishing. Its main requirements are the detection and conversion of parameter signals in the process of rapid parameter changes during dyeing and finishing processing, and a) whether the experimental working state is the standard in the work of the experimental instrument; It is stated that the standards in the experimental work include the basic timely control and treatment of working temperature, environmental humidity, electromagnetic field, working voltage and stability, and work stably and reliably. At present, the key problem is to develop sensors that can detect color difference, alkali concentration, hydrogen peroxide concentration and other parameters. After these parameters are obtained in time, the production process can be adjusted and controlled, which can greatly improve the dyeing and finishing quality, reduce consumption, improve the yield, achieve high reproducibility, and maintain the process stability

continue to develop new equipment

at present, dyeing and finishing technology innovation still lags behind the world's textile machinery powers. Dyeing and finishing equipment manufacturers should provide corresponding dyeing and finishing processing equipment according to product requirements, and need to develop appropriate processing equipment for the special requirements of new fibers lycar, Tencel, Lyocell, modal, etc

printing and dyeing machinery manufacturing enterprises can only welcome future development with new technology. At present, compared with foreign printing and dyeing equipment, domestic printing and dyeing equipment has little difference in shape and basic functions, and the main gap is still reflected in stability and reliability. Although high and new technologies such as digital detection and control technology and computer network technology have been continuously introduced into the manufacturing of printing and dyeing equipment, which has continuously improved the automation of domestic printing and dyeing equipment, gradually reduced energy and water consumption, and gradually improved the three major problems of color difference, weft skew and shrinkage, the problems of poor stability and leakage still exist

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