Exploration And Practice Of Nine Key Technologies For Green Sizing: "Textile Light" Into Zibo, Shandong

"Textile light" key technology promotion

In recent years, green environmental protection has become a new competitive advantage in the textile industry.

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Production enterprises and textile enterprises are actively trying to develop and replace the PVA environment-friendly slurry and sizing process. According to the statistics of tracking enterprises of China Cotton Textile Industry Association, the proportion of PVA in slurry consumption has dropped from 70% to 12% since the 90s of last century.

What are the new breakthroughs in the new process of environmental sizing and sizing? How to reduce costs and efficiency at the same time without using PVA, and how to reduce the amount of slurry and control the total emissions of COD? In June 28th, in Zibo, Shandong, the 9 senior practitioners of the textile industry focused on the "green light" green sizing technology promotion activities.

Wang Keli, vice president of China Cotton Textile Industry Association, Chen Siqi, Deputy Secretary General of textile optical technology education foundation, Wu Zhen of Zibo science and technology development department, He Yaying, vice president of textile industry association, and representatives of cotton textile enterprises, textile machinery, pulp and auxiliaries, totaling more than 250 ginseng.

The event is sponsored by the textile science and technology education foundation, the China Cotton Textile Industry Association and the China Textile Industry Federation science and technology development department.

According to Chen Siqi, this is already the thirty-fifth public welfare technology promotion activity organized by the foundation joint China Textile Technology Development Department and the China Textile Federation sub Trade Association. It has introduced more than 150 scientific and technological achievements to the industry. It has played an important role in accelerating the pformation of textile science and technology achievements into real productive forces.

1. Green sizing process for synthetic sizing agent T-5

Changzhou Hai Jian textile new material Co., Ltd.

Zhang Haifeng, general manager of Changzhou run Li Auxiliaries Co., Ltd.

T-5 synthetic slurry

It is polymerized by many components. Its adhesive force is borne by acrylic monomers, the film forming is carried out by acrylamide monomer, the glass pition temperature is borne by maleic acid monomer, acrylic acid salt gives it water solubility, and its wear resistance is controlled by molecular weight regulator.

The uses of T-5 synthetic slurry include: pure product can be used in all fiber low sizing, in the whole fiber formula instead of PVA sizing, as well as special product adhesive.

Turning to the advantages of pure T-5 sizing, Zhang Haifeng mentioned seven points: single use of T-5 slurry, no PVA, starch, wax and other slurry, and a barrel of slurry material can be reduced by more than 40% over conventional sizing, and the cooked slurry is colorless and pparent, with good fluidity. Because of less sizing, less sizing, less fabric defects, less cloth, and less fabric mill, there is no need for large moisture in the machine shop because there is no starch component. After desizing, no desalting of enzymes is needed, hot water can be desquamed continuously, and desizing is very thorough.

2. Discussion and application of green sizing process for pure cotton yarn dyed and non durable fabrics

Yin Cuihong, director of the two weaving factory of Lu Tai textile Limited by Share Ltd

According to the requirements of ironing process, the fabric is "elastic, Qiang Ligao and easy to desalter". We take "replace PVA" as the main research direction, and take into consideration the sizing quality, and choose the green sizing agent.

Yin Cuihong said.

Through the introduction of product characteristics, green sizing optimization, green sizing process and technology control, and the introduction of several parts of sizing performance and weaving effect, the following conclusions are reached.

Yarn dyed non iron fabric should be selected instead of PVA instead of high grade starch, and solid propene slurry can effectively improve the viscosity stability of the slurry. The sizing rate and sizing moisture regain should be increased by using the sizing agent without PVA, so as to ensure the integrity of the serous membrane and enhance the sizing index. After dyeing, the yarn hairiness is more, and 3 wet dividing rods are used for sizing, which can effectively lay down the hairiness and ensure weaving to make the openings clear. The use of no PVA Green formula is superior to the sizing and desizing, and the cloth feel and ironing are improved.

3. Process optimization and quality control of sizing process

Li Xinshun, vice president of Dezhou Xingde Cotton Weaving Co., Ltd.

Li Xinshun first introduced the basic principles of process optimization and quality control of sizing process: to meet the needs of weaving process, reduce the amount of pulp and sizing cost, and strive to improve loom production per unit level and fabric quality, which is conducive to desizing after finishing and improving product quality.

He then divided into three parts around the theme, including sizing process optimization and process quality control, sizing optimization and slurry quality control, and sizing quality problems.

Sizing is a systematic project. With the continuous improvement of fabric grades, the emergence of new fibers and the requirements of environmental protection, the sizing process optimization and quality control work must be constantly updated and progresses. Only by doing a solid job in every job of "man, machine, material, method and ring" can we serve the latter better and lay a solid foundation for technological progress and product upgrading of enterprises.

4. Breakthrough and innovation of sizing machine

Development and application of GA313 wide sizing machine for Zheng spinning machine

Han Aiguo, deputy general manager of Zhengzhou Textile Machinery Engineering Technology Co., Ltd.

With many years of equipment manufacturing experience and advanced manufacturing technology, market driven and breakthroughs, Cheng spinning machine has successfully developed a GA313 wide sizing machine with a width of 240cm. The purpose is to meet the requirements of sizing high, high density and high end wide size home textiles. It solves the problems of poor grade, low added value and poor product quality caused by poor sizing quality, and improves the automation and intelligence level of the sizing machine. It realizes high speed, high yield, high efficiency, energy saving and high precision control of the sizing machine, and improves the matching capability of the sizing machine.

According to Han Aiguo, the machine adopts artificial intelligence based control system to accurately control sizing process parameters such as sizing elongation, moisture regain, wet zone tension, grouting force and temperature. Using industrial IT technology, acquisition, storage and pmission of relevant parameters in the production process can achieve docking with ERP management system.

The machine not only covers many technological advantages of the high-end sizing machine in the market, but also has the characteristics of high production, low energy consumption, high control precision and good sizing quality.

5. Characteristics and sizing process analysis of new cellulose yarns

Senior expert Ji Dexin

Consumers in clothing

And so on, the demand for new fiber pairs is increasing. How to use new fibers to meet the needs of the society is also a topic in textile production today, such as Tencel fiber, Modal fiber, bamboo fiber and so on.

Ji Dexin's report focuses on the discussion of new fiber sizing process, the key points of moisture regain control and the selection of size.

The new cellulose fiber has the characteristics of high strength, less impurities, less loss of Mao Yuchang, wet elongation, strong fibrillation, low wet strength and so on. Therefore, it is advisable to adopt the medium low temperature sizing process.

The sizing rate can be controlled at about 8%~11%, the moisture regain is controlled at about 12%, the grouting force is 25~30KN, and the sizing speed is 60~70 meters / min.

6, technology promotes green production -- warping and automatic loading.

Deputy manager of Guangdong Yida Textile Co., Ltd. asked Xiao Feng.

Yida is a vertically integrated cotton textile manufacturer.

According to Xiaofeng's introduction, in the past, manual loading was used to calculate 60 thousand ~8 units in the whole country. The whole country needs about 500 thousand manpower, and it has the disadvantages of low production efficiency, poor production quality, high yarn cost and heavy staff load.

In order to break through the bottleneck of the artificial resources, Yida and Guangzhou Sheng Yuan have jointly developed the automatic barrel system, and 8 patents have been obtained.

The automatic tube filling system has intelligent control system and automatic loading system, which can realize intelligent import production plan, automatic production data storage and intelligent monitoring of production process.

The grabbing system can meet the needs of various types of packaging yarn, automatic loading of the stacking yarn and automatic switching of the fixture. The feeding system can realize automatic positioning, accurate pfer of the cheese and no distinction between the size and the head. The recovery system can realize automatic recovery, feeding and positioning.

Since the application of the equipment, the staff release, efficiency improvement, cost reduction and quality improvement have been realized, and the automation and intelligence process of the textile industry has been promoted.

7, production and practice of Tencel extra fine green fabric

Yang Huadong, workshop director of Zibo Silver Star Textile Co., Ltd.

In 2015, "the first year of environmental protection", Yin Shi Lai has five varieties, and won the "no PVA" fabric certification certificate issued by China Cotton Textile Industry Association, covering Tencel, pure cotton, polyester cotton, pure polyester, coarse yarn, high count yarn, large jacquard, small jacquard and other kinds of fabrics.

Yang Huadong introduced the production practice of "LF Tencel 100*LF Tencel 100*217*115*106" 4/1 satin fabric.

The warp and weft yarn selects LF Tencel 100 single yarn, because the Tencel fiber is cellulose fiber, and its fiber molecules contain a large amount of hydroxyl group. According to the principle of "similarity compatibility", green environmental protection type high performance oxidized starch and starch phosphate are used in sizing process. The whole process is PVA free, and the process is green without pollution. The weaving process is CGGA-114B high-speed warping machine of Shenyang spinning machine, Tianjin jutian HS40 sizing machine, JE Jin Tian Ju Ju ZAX-N 280 air-jet loom.

8, environmental protection sizing cost accounting and meticulous management.

Le Pingyong 3542 China Textile Co., Ltd.

The realization of environmental protection sizing without PVA has long been the consensus of the industry. Before and after 2008, Jihua 3542 Textile Co., Ltd. has begun to explore the experiment without PVA sizing process. After 10 years of technology accumulation, some mature experiences and measures have been achieved.

By continuously promoting the environmental sizing work without PVA, on the one hand, it promotes the standardization and institutionalization of the sizing technology management work, and on the other hand, further widens the company's business scope.

No PVA sizing ideas include ensuring that the yarn quality indicators meet the requirements; considering the characteristics of the varieties and the properties of the slurry, determining the best process plan; formulating the operation specification without PVA sizing, focusing on inspection and implementation.

Since then, Leping has shared 3 application examples of PVA sizing process: JC60 * JC80 200 x (92 x 2) 128 "satin, Ten40 x Ten40 140 * 90105" satin and JC80 * JC100 200 * (88 * 3) 122 "satin.

9. Environmental impact and treatment of desizing wastewater containing PVA

Li Chunguang, deputy chief engineer of Limited by Share Ltd

Li Chunguang shared salting out synergistic flocculation method to recover PVA from desizing wastewater, anaerobic treatment of cooking wastewater, advanced oxidation treatment of Fenton and membrane separation technology, and compared the results of four processes.

The four processes are more mature for the treatment of PVA containing wastewater. However, compared with those without PVA, there are many problems such as complex treatment process, high operation cost, difficult operation and management, high one-time investment cost and large occupied area. The use of PVA slurry has to deal with wastewater through complex treatment, resulting in a sharp rise in processing difficulty and cost.

Therefore, in today's enormous environmental pressures, it is very important for the textile and dyeing industry to promote the new green slurry, reduce the amount of PVA, or improve the biodegradability of PVA through chemical means.

After the meeting, guests and representatives visited the two factory of lotai textile Limited by Share Ltd weaving.