Energy-saving, environmental protection, high-finishing industry in the 21st century sustainable development in the growing shortage of water resources, worsening environmental pollution, textile printing and dyeing and finishing industry is facing a severe test in the field, environmental protection has become the most at home and abroad Topic. And finishing the current world trend is based on the concept of eco-development of new technology and new equipment, combined with technology, dye-based materials, additives, such as multi-channel start, finishing the new technology, new technology and new equipment have emerged, showing that the global printing and dyeing technology and Machinery industry booming momentum. Pay attention to the production process for each link in the ecological balance, which is printing and dyeing and printing and dyeing industry, mechanical technology, printing and dyeing to improve product quality and environmental protection is of great significance.
Effective environmental protection: the international trend of dyeing and finishing of the new technology
Use of foreign water processing technology, no printing plate technology, low-temperature plasma processing technology, electrochemical technology, nano technology, bio-technology, such as enzymes, making printing and dyeing finishing process shorter, higher productivity, better performance, more environmentally friendly Energy-saving. In the following areas:
Supercritical dyeing supercritical dyeing, also known as water stain. Germany and the United States have been small and medium-sized test equipment, Japan, Britain and Switzerland have made literature. China has developed experimental device. Supercritical water stain thoroughly change the traditional concept of dyeing, printing and dyeing is China’s production and export of power, water shortage is a big country, which for us is of great significance.
Plasma technology applications during the 90 century and actively explore and study of plasma applications, the technology is a non-traditional dry physics processing. Which is characterized by a water-saving, energy efficiency and reduce environmental pollution. SAC U.S. companies in the 1970s to develop a dyeing production line, as a result of limited use and gradually disappearing. Niekmi Institute of the former Soviet Union, 80 of the last century has developed a series of industrial equipment such as plasma. Italy Mezzera (MEZZERA) has launched the development of KPR-plasma processing equipment industry has entered a pilot-production stage, the fabric can be used to pre-desizing. 1997 Japan Iron Works in Shandong has developed a plasma-treatment plant in a row, desizing, scouring the trial. China at the end of the 1990s successfully developed China’s first low-temperature plasma in a row of the new wool processing equipment.
Electrochemical reduction technology in dyeing and bleaching scouring Germany grams Blue Mainz (KRANTZ)’s electrochemical dyeing machine, when used to restore, indigo, sulfide, and other types of dyes for coloring, you can not use the traditional technique used by the caustic soda, sodium Pharmacy, and so on, but by electrochemical methods will be back to the media by dye bath, making the above-mentioned dye reduction. This approach has the advantage of saving 80% of the chemicals, water consumption is almost zero, significantly reducing environmental pollution.
University of California invented electrochemical devices, mainly for pollution-free bleaching and refining. The basic principle is that of the cathode electrode release lye, bleach and mercerized, and the anode is produced acid, and the residue left in the base so as to put an end to waste emissions.
New technology soft finishing technology mainly white Spyra this karaoke machine for finishing fabrics for finishing the sorting machine model is a turn-cage dryer. In the fabric into the machine before the first padding, the winch used to upgrade, emitted by a large number of high-pressure air into the cage to the first 6 units of the Department of steam injection will be better finishing results. Cool fabrics to the cage to feed the last two to complete the process. Porous cage to have a large enough space to avoid tie, with load sensors under the direction of the collection plate may be part of the speed. According to the process, the bulk fabric can be carried out, drying and finishing soft, so as to improve the feel of the product, increased value-added. It is easy to operate system, operating conditions and control settings from a computer. Process parameters: air temperature and air flow, the rotation frequency of the roller speed and degree of dumping (the decision of the fabric feed speed), such as steaming by the PLC control. Low-volume and high-volume production of the same operating conditions, is stored in the computer memory, used to restore and ensure the quality of uniformity.
Airo system can be used on fabric gap-washed, soft, drying and processing. The technology uses high-pressure air to bring the impact across the fabric of the grid. High universality of the machine can be used in extremely thin and very thick fabric processing. As the air pressure nozzles will enable the Department of the main fabric to-width impact to ensure that no cross-processing files, and abrasion crease. In the wet process, which is conducive to chemical bath to penetrate the fabric. Airo improve the look and feel of the fabric.
Domestic and finishing techniques to achieve new breakthroughs
And finishing the current world trend is based on the concept of eco-development of new technology and new equipment, combined with technology, dye-based materials, additives, such as multi-channel begin, pay attention to the production process for each link in the ecological balance, which is printing and dyeing and printing and dyeing machinery industry Technological advances, printing and dyeing to improve product quality and environmental protection is of great significance. In recent years, China’s dyeing and finishing equipment is moving in environmental protection, energy saving, time-saving, efficient direction, and the world is shrinking the gap between the advanced level. At present, China’s dyeing and printing and dyeing machinery industry in energy saving and environmental protection have made some achievements, specifically in the following areas:
Burner singeing of the city of Jinan in Shandong to improve the combustion of the new technology development in recent years, the company introduced a new generation of “FC compound singeing Burner” and “JMA013 contact-type electric heating Burner,” the new technology. Singeing compound to achieve the “jet – contact – Jet” singeing of innovative processing methods to improve the quality of singeing, the realization of the energy consumption and so on. “JMA013 contact-type electric heating Burner” for electric energy, the structure is simple and easy to use, the temperature distribution, singeing high-quality, energy-saving effects of significant production environment clean. The technology, first at home and abroad, a new type of cleaner production equipment.
E-ago used to deal with the decomposition of biological enzyme treatment, waste water to reduce the pulp content in order to reduce the COD, BOD. As the use of non-alkali-treated, the production process without water eluting base, thus greatly reducing water consumption, reduced emissions and waste water pH value. Tricon SUZHOU such as the use of the enzyme produced in the vat dye GXI conducted desizing, scouring, bleaching pre-treatment to replace the traditional base of desizing, scouring water, emissions from a number of Road 10 is reduced to 5, and To increase production 1 / 3 (that is, before the cold pad-batch processing can be reduced 1 / 3), so the former can be reduced to deal with (back, cooking, bleaching) with a displacement of 20% (30% (conservative estimate), the entire printing and dyeing wastewater 10 % (12%.
At present, dye-stained in a row washing machines are basically designed to turn the clock back frame-by-saving machine, dyeing machine such as intermittent Jigger, jet dyeing machine in the run-off after dyeing, multi-channel must be washed, the first few heavy water pollution , At the end of 2 are relatively minor. Intermittent dyeing machine to the liquid valve design for the three valves, which are under separate drainage, so that at the end of a few can be washed with deep color, heavy pollution discharge lotion when separated from the pollution of the water concentrated in a small outdoor pool in By filtering, by pump into the dyeing machine as the first of several water use.
Digital jet printing digital jet printing is a computer-controlled non-contact printing technology, to spend on high-precision, adaptability. No plate, greatly reducing the production cycle, the maximum available to meet the low-volume, fast delivery requirements, and a very small footprint, and greatly reduce environmental pollution in the traditional printing is a new water-saving technology and new technology. Zhejiang Honghua Computer Technology Co., Ltd. launched by the DPM-2200T digital jet printing systems can adapt to different thickness of fabric printing, with guided self-cleaning device, to achieve the use of the water cycle, real-time cleaning the surface conduction band. Ink has dispersed activity, such as the type of acid, can be printed cotton, linen, silk, polyester, wool, acrylic fabrics and so on. 360dpi precision in under an hour 27.6m2, the largest printing width 1,600 mm to 2,200.
Printing system is currently mixing textile printing and dyeing industry in the printing process of mixing processes in most of the traditional manual deployment mainly due to the lack of automatic control unit, need to rely on the experience of manual adjustments to the required process, which is caused by dyeing and printing enterprises did not end Printing and dyeing wastewater pollution control over one of the reasons, but also resulted in the energy business of printing and dyeing, dye-based materials and pulp and waste remain serious impact on product quality, labor-intensive. Hangzhou open source computer technology Limited textile industry automatic printing and dyeing technology uses automatic plasma mixing system can be improved printing mixing cleaner production technology level, reduce energy consumption and serious pollution of the waste material, to try to reduce the large number of processing residue Its emissions. To achieve energy consumption and reduce emissions of printing and dyeing, a large number of energy conservation and water resources.
Automatic rotary-type machine network equipment in China there are three main, are in Hangzhou China’s macro-RS inkjet system, open source Hangzhou Sanax-wax spray system and Shaoxing Textile Science and Technology Center, JC-laser system. The three-network system and the traditional network-sensitive method, to reduce the number of procedures to shorten the production cycle, and small footprint, and reduce the traditional system in the network environment.
Pay attention to environmental protection to eliminate the gap
In recent years, China Dyeing and Finishing of new technology and equipment. In stressed modular product design, technology building blocks; prominent environmental protection; electric drag stable and reliable, adjustable tension, the people – machine – environment can be fully coordinated development of a number of new technologies and new equipment. Using advanced and reliable power supply sub-synchronous AC variable frequency drive, PLC can be made available for process control, man-machine interface touch screen operation, the aircraft is also used elastic pneumatic control, adjustable tension.
However, China’s dyeing and finishing equipment and advanced levels, there is still a considerable gap, primarily in the following areas:
Pre-processing equipment and training drift mercerizing machine temperature, liquid level, the concentration of hydrogen peroxide and the concentration of base-line measurement, and automation level of clearance, however. Mercerizing apply to the development of printing and dyeing process and the strong concentration of lye desizing, scouring process of the light alkali concentration, the concentration of hydrogen peroxide bleaching process on-line detection and control technologies and equipment.
Dyeing equipment, air flow dyeing machine – Stern (Hong Kong) developed mechanical AIRFLOW AFE air-dyeing machine application of aerodynamic principles, dyes, chemicals and additives soluble in processing solution directly to the injection of air, the dye was fog , And uniformly distributed through the nozzle on the fabric surface. Fabric running speed of 700m/min, dyed cotton fabric 1:3 lower than the bath. China’s air flow dyeing machine with a large gap between foreign countries, great efforts should be developed. Special focus on the development of the structure of the nozzle, high pressure air and air-dye injection of the circulatory system; the development of fabric running low resistance, low-tension system upgrade.
Short wet steam flow dyeing machine – it is the most simple process as soon as possible for dyeing equipment. Fixing the rate of 10% to 20%, at the same time to save energy by more than 15%. As a result of our process parameters on-line testing, conversion and timely control of the key issues such as technology, the device is being developed.
The level of printing equipment Technically, the Rotary peace network with foreign advanced level, there are still small compared to the gap, its ease of operation, the degree of automation, innovative development, as well as environmental awareness and so on, our gap is obvious.
Austria Ma Qi (Zimmer) bar rotary screen printing machine and Italy and the United States and Nepal good (REGGIANI)’s UNICA series lead with the printing machine washed devices, increased use of the water cycle, water-saving clear. The United States and Nigeria’s good printing machine, magnetic magnetic system of permanent magnets, with no distortion, and other power-saving advantages.
After finishing equipment stenter setting machine – the advanced setting stenter machine with energy-saving, environmental protection characteristics. Humidity control system, using the latest measurement and detection of emission control devices (air circulation) and the humidity’s optimization of energy consumption. Emissions through the exhaust fan on the motor speed to control the drying process, so that the power consumption as much as possible the economic, technological and reasonable as far as possible. Use row fans, through their adjustment to optimize emissions in order to adapt to different technology. Waste heat recovery and exhaust gas purification system will exhaust the heat transmitted to fresh air or water, and emissions of pollutants have been condensed and filtered. Emissions of heat can be fed back to finishing units, or for some other occasion. China needs to develop energy-saving, environmentally-friendly setting stenter, to strengthen the waste heat recovery and exhaust gas purification system.
We have to widespread adoption of new technologies and pay attention to environmental protection, energy saving, printing and dyeing equipment to improve the level of integration in machinery and instruments and to monitor the level of on-line, printing and dyeing to improve the reproducibility of production to meet the low-volume, fast delivery, high-quality requirements.
The development of advanced optical color dyeing cloth and microwave rolled over the rate of on-line detection system for the settlement of a row in the process of dyeing cloth generated about color and head and tail, to ensure product quality and stability.
The development of high-speed digital printing machine of the spray nozzle to improve the machine structure and improve the printing speed, so 360dpi speed jet printing when 100m2 / h.
Oil on the development of advanced and Hong Fang temperature, humidity exhaust Hong Fang, a cloth regain control of real-time detection technology and equipment. Heat setting process to ensure product quality and stability of energy and reduce emissions.
To develop a new generation of low-temperature plasma processing, dyeing, as well as supercritical carbon dioxide electrostatic printing and other advanced technology and set up
Preparation; to develop a new generation with the safety, energy saving, environmental protection unit of GM, the basis of specific cases.
Learn from foreign experience, focus on production, quality management, innovation and focus on reforms to the premise of customer needs. Test equipment to set up shop at any time trial at any time to amend, not only to test the machinery, but also test technology. End test factory, but also to the user to carry out large-scale production plant test. While the production side test, continuously improve equipment performance, constantly developing new equipment.