Equipments upgrade leading innovation process – the new denim washing techniques
In order to strengthen the textile dyeing industrial waste water control and management, starting January 1, 2013, China began to implement GB 4287-2012 “textile industrial water pollutant discharge standards”, the new standard for dyeing water pollutant emissions put forward higher requirements. November 2013, Ministry of Environmental Protection issued the “Guidelines for Environmental Compliance and dyeing enterprises,” “guidance” for the new, reform, expansion of existing textile enterprises as well as from the daily management of the construction project to the whole process, and guide the country and standardize printing corporate environmental management and pollution prevention standards. Social level, the German documentary “jeans price” as well as environmental organizations frequently exposed printing and dyeing industrial pollution incidents environmental issues will also be pushed to the next processing spotlight of public opinion. In addition, technical barriers to international trade in textile chemicals Restriction of hazardous chemicals require more stringent, which also produces printing Forced industrial upgrading effect.
Jeans clothing washing is an important process in denim apparel production. Currently, the mainstream jeans washing equipment is still the traditional horizontal drum washing machines, with low degree of automation, large water consumption of steam capacity, more production processes, high labor intensity, low efficiency. In the washing process, currently, the large number of finishing jeans still stone wash, sand wash, rinse and chemical wash as the main tool. This traditional washing process is high energy consumption, serious pollution, wastewater emissions, and poor eco-friendly products. Effectively control and reduce denim garment production process wastewater discharge is an important issue facing the industry, but also denim processing enterprise development and upgrading of the potential lies, challenges and opportunities. Advanced technology is part of the environment to ease the current pressure washed denim effective means. This article focuses on the ozone washed denim and laser technology and equipment to provide technical reference for denim washing clean production.
1. Ozone Washing technology
Ozone technology has many advantages in denim garment processing applications, including reduced water and chemical consumption, shorten the process time and process, cleaning and environmental protection. Ozone washing machine can apply ozone (by ozone generator) to the garment washing process, produce achromatic bleaching effect by ozone. Such equipment is mainly used for denim vintage processing. By adjusting the ozone generation amount can achieve varying degrees of treatment effect. Ozone washing machine without the use of chemicals, can save a lot of water, so in line with the requirements of environmental protection. In addition, ozone finishing techniques to achieve different styles of denim garment processing and production, giving the effect of new and unique jeans, denim fabric from the visual, functional not only reflects the rugged cowboy, also showed a comfortable and soft feel.
Jeans denim effect of after ozone washing
Currently on the market is relatively mature ozone washing machine manufacturers have LST, Jeanologia, Ozone Denim Systems, etc. Various types of processing equipment ozone washing same principle, save water, electricity and chemicals are terrific.
Ozone is a strongly oxidizing gas having superior decolorization all dyeing capability, ozone can damage these dyes auxochrome groups, so as to achieve decolorization. Core technology and equipment ozone generator system is the discharge, directly affect the efficiency and reliability of the equipment. LST ozone generator using micro-gap dielectric barrier discharge design, not only greatly improve the efficiency of operations, and increased security and reliability of the system for continuous operation.
Although the efficiency of modern ozone generator, compared with conventional products has been significantly improved, but there is about 90% of electric energy for generating ozone is not transformed into heat. If this part of the heat is not effectively dissipated, the ozone generator discharge gap the temperature will continue to rise even more than the designed operating temperature. High temperature is not conducive to ozone production, but in favor of ozone decomposition, leading to ozone production and concentration decreased. LST-cycle cooling water unit design, when the cooling water temperature exceeds the temperature of the system design or lack of water, the system will automatically send an alarm signal.
LST ozone equipment can achieve automatic control of each process step, in order to ensure consistency of treatment effect. After the ozone treatment, by a thermal catalytic elimination of ozone safely and quickly converted into oxygen, ozone elimination after a clean machine before opening the door seal. The machine is completely sealed, special seals to prevent leakage of gas on the machine, for insurance purposes, is also equipped with a pneumatic safety valves. LST ozone makes garments can be done directly on the machine, at the same time eliminating the need for manual operation, saving time, in particular to avoid the operator directly contact with the clothing, effectively prevent the occurrence of accidental injury. The machines produce high flexibility. An ozone generator and an ozone eliminator connected with two washing machines, which can reduce equipment investment costs. An ozone generator for two washing machines alternately supply ozone, can also increase production. The whole process by LST specialized software control.
2. Laser washing technique
The application of laser technology for washing denim fabrics engraving and visual graphics innovation is the modern digital technology, laser technology and artistic design combined with the performance of a jeans fabric finishing. Laser engraving technology in the denim visual innovation, enriching the fabric of varieties, improve the quality of fabric, the added value and the degree of personalization. It is a new leap forward for high-end denim fabric and jeans garment finishing processing.
