Textile Industry Welcomes Double Harvest

The practice of advanced enterprises shows that the implementation of environmental sizing is not only energy saving, emission reduction, environmental friendliness, but also can reduce production costs and improve product quality.

Although it is still a long way to go to realize the environmental protection sizing up in the industry, after more than ten years of appeals and positive promotion, many enterprises are actively implementing environmental protection sizing up with the increasing awareness of environmental protection, the gradual introduction of the national policies for energy conservation and emission reduction, and the restriction on the import of PVA paste grey cloth in developed areas such as Europe.

The practice of advanced enterprises shows that the implementation of environmental sizing is not only energy saving, emission reduction, environmental friendliness, but also can reduce production costs and improve product quality.

Their positive exploration proves that environmental protection is not contradictory to the two propositions of reducing costs.

According to the results of the national pollution source survey, COD accounts for 18.53% of the total emissions in 39 industries, of which 55% is caused by printing and dyeing desizing wastewater.

In other words, COD emission in the whole country is related to 1/10 sizing and weaving.

The COD emissions of this 1/10 are mainly caused by chemical pastes such as PVA used in warp sizing.

At present, the national demand for energy conservation and emission reduction and environmental protection is getting higher and higher. In Europe and other developed areas, the import of PVA containing grey cloth has been strictly prohibited. The environmental protection problem has affected the survival of enterprises and the sustainable development of the industry.

It is understood that a family in Shandong

Jiangsu Lian FA textile responsible person said that most enterprises are still using PVA sizing, but as many countries have no PVA requirements for textiles, no PVA sizing is a trend.

In order to further strengthen the company, we must actively explore environmental sizing and have our own core technology.

In order to enhance the sense of social responsibility of enterprises, environmental protection sizing work has aroused the whole industry, especially

Xiao Wei said in an interview that the industry is now promoting environmental sizing not only in line with the current energy conservation and emission reduction.

Simply calculating the cost of slurry, the view that "no PVA will increase the cost" has become an important factor for some enterprises to refuse to abandon the use of PVA slurry.

However, the practical effect of environmental sizing by many enterprises has strongly refuted this argument.

In recent years, Nanyang Textile Group Co., Ltd. has been carrying out energy conservation and environmental protection sizing on the conventional cotton poplin series. It is estimated that only one year of sizing can save 326 thousand and 640 yuan for the company.

Because the products of this series are environment-friendly and easy to desizing, and the quality of products is stable, they not only reduce the cost of desizing and pollution control for printing and dyeing factories, but also expand the export, expand the market and improve the price of grey cloth, cloth and clothing.

Due to the successful application of environmental protection and energy saving sizing, the products of Nanyang Textile Group are in short supply in the market.

At present, the output of this series of products has accounted for more than 20% of the total output of the company's grey fabric, and the profit has increased by 0.2 yuan per meter. According to the annual output of 6 million meters, the annual profit of the company can be increased by 1 million 200 thousand yuan, effectively improving the market competitiveness and economic benefits of the enterprise.

Since 2007, Jiangsu Yulun company has tried environmental protection slurry instead of PVA slurry. By the end of 2009, PVA sizing has basically been achieved. The overall cost of slurry has not been increased but decreased.

Xiao Wei said that the key to cost savings is the full study of the properties of the slurry, considering comprehensively the performance of sizing equipment, production varieties, including looms, and using it scientifically and reasonably, not just simply and routinely, but by individualized application, so as to save slurry cost on the premise of ensuring yarn quality, stabilizing and improving loom production efficiency.

In the process of carrying out environmental protection sizing, Yulun company actively explores, first of all, environmental friendly sizing agent suitable for the production of our company.

At present, there are many kinds of slurry that are known to be able to replace PVA in the market.

Through communicating with the pulp manufacturer, we can choose one or several environment-friendly slurry suitable for the production of our company.

Secondly, according to the performance of environmental protection slurry, combined with the production characteristics of sizing varieties, we should optimize the sizing formula and sizing process.

Thirdly, we should coordinate and coordinate production management, sizing operation and sizing equipment in a targeted manner, pay attention to production details and give full play to the performance advantages of environmental paste.

By combining various aspects, we can ensure the stability of production and product quality and save production cost without using PVA slurry.

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PVA has been proven in technology for many years and is a good sizing material, which makes it difficult for many enterprises to abandon it.

How to ensure sizing quality without PVA?

In this regard, Xiao Wei believes that since the 60s and 70s of last century, the use of PVA slurry has gone through thirty or forty years, and the vast majority of cotton textile enterprises have accumulated extensive experience in the application of PVA slurry.

The implementation of environmental protection sizing without PVA is indeed a process of cognition and mastery for the vast majority of textile enterprises, not only in terms of technology but also in ideology.

According to introducing, Yu Lun company began to use environmental protection slurry when encountered many resistance, many operators do not understand the performance of environmental paste, and do not dare to drive when the viscosity of slurry is slightly lower. Sometimes, when the technical staff assume the risk of sizing quality, the driver will dare to drive.

Xiao Wei believes that this has much to do with the high viscosity stability of PVA slurry that you have mastered over the years.

In the sizing process, due to the crispness and low elongation of the modified starch slurry, it is easy to produce many problems such as excessive pulp and brittle breakage. Therefore, it is necessary to maintain the high moisture regain and a slightly higher sizing rate, especially controlling the temperature of the pre drying cylinder and the elongation of the wet area. In the management of sizing production, it is required that the sizing agent accurately control the time of sizing and feeding, and reduce the problem of slurry quality decline and instability caused by excessive pulp mixing time.

After having grasped the requirements of the environmental slurry, the yarns of the Yulun company found that the good axis ratio of the weaving shaft was raised, the sizing of the sizing was reduced, and the defects were not found.

The technical personnel of Nanyang textile group think that PVA slurry has excellent sizing performance. It has always been the preferred sizing agent for sizing high density and high density varieties. We all feel relieved, and when the quality of sizing is first appearing, the first thing we think of is that the dosage of PVA is not enough. This has become the habitual thinking mode of many textile enterprises, especially sizing operators, grass-roots managers and technicians.

Therefore, if we want to popularize the energy saving and environmental protection sizing without PVA, we must first change the traditional thinking pattern of these people, so that they can fully accept the idea and benefits of energy conservation and environmental protection sizing up psychologically.

Secondly, after adopting the energy saving and environmental protection slurry, the sizing effect can meet the requirements of weaving and increase. It is necessary to research and grope for the system, improve the technological process, and have a higher requirement on the operation level of the sizing machine.

Since the sizing requirements for energy saving and environmental protection slurry are relatively high, from the truck drivers to the managers, they must have a high sense of responsibility and discipline. A complete set of assessment and inspection mechanisms must be established to ensure the smooth operation of the energy saving and environmental protection sizing process and to maximize the sizing effect.

Experts believe that environmental sizing not only saves energy and reduces emissions, protects the environment, but also provides the necessary guarantee for improving the quality of dyeing and finishing.

People's requirements for quality, color, handle and functionality of the products are getting higher and higher. To achieve these requirements, the quality of pretreatment before dyeing and finishing is the key link, and the problem of PVA desizing is also highlighted.

Because of the desizing of the grey cloth with PVA sizing, there will be dyed shade and depth difference, which will affect the durability of functional finishing and affect the finishing effect of ironing, waterproof and oil proofing.

After promoting the application of no PVA sizing technology, the joint products company has improved the quality of finished products and fabric grades: the sizing effect of PVA less sizing fabric is better than that of PVA after desizing, the durability of fabric functional finishing is better, and the color, brightness and handle of fabrics are improved significantly.

In addition, biochemical dyeing and finishing process can not only effectively reduce processing procedures, shorten processing time, reduce energy consumption and water consumption, but also greatly reduce processing costs, but the premise of application is that it can not contain PVA.

Therefore, sizing without PVA has become an urgent problem to improve the quality of dyeing and finishing and the application of biotechnology.