New tasks for printing and finishing machinery

From textile printing and dyeing to finishing machinery, it is a very wide industry with a long industrial chain. It includes three links: raw materials, roughing of printing and dyeing, and fine finishing.

The raw material objects are scattered wool fibers, tow fibers and the original fabric fabric, of course, there are colored and uncolored chemical fibers. Different from these raw materials, the dyestuff, dyeing process and equipment used are different from each other, including scattered dyeing, tow dyeing, color-matching and dyeing, and fabric dyeing.

The dyeing and printing of the original grey fabric is a key intermediate link in the printing and dyeing industry. Due to the different raw materials of the grey fabrics, the dyes, processes and equipment used are also different. Cotton fabrics, polyester-cotton fabrics, and corduroy fabrics are all singed, rolled, steamed, dyed, and printed, but each has its own process and each has its own special equipment. In addition to the general use of some equipment, chemical fiber filament fabrics use dyeing and printing processes are not the same, it has special refining, cleaning, alkali reduction and other special processes and processes. Dyeing and printing of knitted fabrics is another process and equipment, and special types are loose refining, washing, rolling and drying, so that the fabric is in a relaxed state to reduce the deformation of the fabric.

Dyeing and printing are key intermediate steps in printing and dyeing processes and machinery. Different fabrics, different processes, different selection of equipment, there are dozens of optional dyeing machines, scattered wool dyeing machine, tow dyeing machine, cheese dyeing machine, a jigger, roller dyeing machine, high temperature and high pressure Atmosphere, atmospheric pressure, overflow, jet, air flow dyeing machine, as well as pad printing and dyeing machine for mass production, etc., have various specifications.

The same is true for printing. There are many types of technology, such as rollers, circular screens, and flat screen printing. Circular screens and flat screen printing machines have a magnetic bar type, a scraper type, and inkjet printing, heat transfer, cold transfer printing, etc. All kinds of things. The finishing after dyeing printing belongs to the fine processing technology and processes in this industry. There are many process methods, including mechanical and physical methods, chemical methods, conventional calendering, embossing, burnt-out, fluffing, shearing, brushing, bristling, bristles, steaming, folding, and chemical fiber filament fabrics. Soft finishing, etc.; with special process resin finishing, liquid ammonia finishing, etc.; as well as newly developed different fabric types, different processes, different uses and coatings using different raw materials, these collectively referred to as the deep processing after fabric printing and dyeing. These products continue to create new products, new processes and new technologies as the market changes. There are also wool fabrics, silk fabrics, bed sheets, towels, decorative fabrics, and socks, gloves, fabrics, all have their own characteristics of raw materials, using different printing and dyeing and finishing processes, using different sets of technology and equipment. In addition to the mainframe process production line, there are solution preparation equipment for the host process supporting services, color selection, color matching, conveying equipment for dyes, auxiliaries, printing rollers, circular screens, flat screens, patterns, pattern designs, and nets. Complete sets of equipment, as well as printing and dyeing online diagnostics and terminal quality control and inspection instruments.

The above processes and equipment form a wide and long industrial chain in the printing and dyeing industry. Therefore, it is indeed not easy to make this industrial chain work well. Because it involves the variety of raw materials, quality, involving the printing and dyeing process, involving the use of dyes, auxiliaries, as well as public works of water quality, electricity, steam, air pressure and corporate management of all aspects, as well as the quality of operators. Of course, there are equipment, equipment is the carrier of the process, and equipment must be operated and managed by people. Therefore, this industrial chain is a complex system engineering.

Why do you put forward new tasks for finishing machinery after printing and dyeing? Based on the following three points: First, the annual production capacity of printing and dyeing has reached more than 70 billion meters, the production capacity of conventional products is more than adequate. Second, the development of science and technology, the use of decades of old technology, old equipment should be eliminated, and recently announced a phase out of a group of 176 projects. The third is the new requirement for green, low-carbon, energy-saving and environmentally-friendly products. If we do not adjust the structure or improve it, we will fall behind. This is a pressing situation.

The new situation and new tasks have set the direction for the structural adjustment of our industry and put forward new requirements, which are also new opportunities for development. How to adapt to the needs of the new situation requires not only observing the macro-control, but also focusing on the big ones, starting small businesses to seek development, and upgrading from the development. I think if we can do some specific work from two aspects? The first is the use of dyes and auxiliaries, with the dyeing process to reduce emissions. The second is to improve and improve the four high energy-consuming products such as rolling, washing, steaming, and baking. Improve energy efficiency while improving performance. It is difficult for these aspects of work to "go to heaven," but step by step small steps will also work.

The combination of printing and dyeing technology and equipment needs gradual promotion. The reasonable adjustment of water level, pressure, speed, and rolling rate of large and small rolling mills may achieve water saving, flat washing tanks produced by Wuxi Hongqi Printing and Dyeing Machinery Co., Ltd., and using insulated sandwich panels for warm water washing tanks, which may also be water saving and saving. Energy effective measures. Drying cylinder drying machine is still mostly open heat, is it possible to properly close it? Some have already put the waste heat into the heat exchanger and continue to recycle it to save energy. There is also a coating angle between the drying cylinder (heat roller) and the fabric. Can it be adjusted to improve the thermal efficiency? Steamer, tenter, and stereotypes are equipments that consume large amounts of heat. From the aspects of air flow, air pressure, hot air circulation, heat energy recovery, heat exchangers, and heat insulation door components, a little research and analysis, a bit of improvement measures are possible. As a result of energy-saving and efficiency-enhancing, even if a little bit of improvements are made, as long as it adapts to scientific development and promotes it, it will contribute a lot.