Recently, Germany's Bayer Material Technology Group, the world's leading high-tech polymer solution provider, announced its latest. Spin The coating production line was officially opened in the Bayer Shanghai polymer research and development center. At the same time, its nonwoven coating laboratory in Leverkusen, Germany has also opened up new facilities to further enhance its ability to innovate in textile coatings from product chemical synthesis to the development of a new generation of eco textile coating process solutions.

Bayer Group official said that the fabric coating technology can no longer be regarded as fabric finishing technology. From the microscopic point of view, polymer coated film can be regarded as a space. It can accommodate a lot of substances, and will make fabrics have special properties and functions which can not be achieved after finishing technology. Coated products have been developing very fast in recent years. clothing Fabric There are new breakthroughs in decorating and industrial industrial textiles, and coating technology will make great contributions to the development of functional fabrics in the future.

Rely on coating technology to compete for market share

The demand for coated fabrics and other high value added technology textiles has increased, and in recent years, most of the textile industry in the United States has fallen into a low-cost competition dilemma. According to statistics, the international textile coating products account for more than 25% of the total textile output. Therefore, coating plays an important role in textile finishing. In 2013, more than 1/2 of the coated fabrics were used in the industry, including automotive interior decoration, safety protection, filtration materials and other fields. The major companies are competing for the introduction of different coating products, and coating technology has become the main means for international industry giants to compete for market share.

　　德國(guó)威客公司推出了一種新型有機(jī)硅涂層，該有機(jī)硅涂層可以產(chǎn)生拒水效果，使產(chǎn)業(yè)用紡織品不會(huì)吸收太多水分，可以達(dá)到預(yù)防浸濕效果;新加坡南洋理工大學(xué)研究院研發(fā)的Solgel技術(shù)可以用于服裝的涂層處理，該技術(shù)可以產(chǎn)生含金屬氧化物或氧化硅薄膜的透明涂層效果，能夠?yàn)闅庀嘟饘傺趸飳拥某练e提供一種可選擇的方法;日本東麗公司開發(fā)出的最新防護(hù)材料，是由金屬薄層、樹脂層和纖維基布經(jīng)復(fù)合層壓而成，該防護(hù)材料一面的涂層劑中含有炭黑導(dǎo)電樹脂，能形成導(dǎo)電樹脂層，這樣復(fù)合層壓織物兩面能量反射不同，使它對(duì)近紅外線、遠(yuǎn)紅外線、電磁波及雷達(dá)等都有很好的防護(hù)與偽裝作用;美國(guó)導(dǎo)電復(fù)合材料公司開發(fā)出的CVD涂層非織造布，比使用導(dǎo)電纖維生產(chǎn)的非織造布更輕、更薄、導(dǎo)電性更好。

It is worth mentioning that a few days ago, the Shengze Wujiang Tan Qiu color coating factory was responsible for the development of Suzhou's new product, "respirable and multi-functional ultraviolet coated fabric", which was appraise by the relevant departments. Experts believe that after repeated experiments, the product has combined the waterproof, moisture permeable and anti ultraviolet functions by adopting advanced technology, and has made a new type of coated fabric which is comfortable and can protect the body from ultraviolet rays. In the early stage of trial production, the customer showed a high degree of satisfaction with the intrinsic function and appearance quality of the product. The successful launch of the product has played a leading role in the progress of coating technology in domestic industry.

Ecological problems of additives should not be ignored

Nowadays, more and more textiles are developing in the direction of functionalization and differentiation. Coating process is an important means to achieve functional products. Some ordinary fabrics can improve the product grade and increase the added value of products through coating. The different coating production lines are beginning to take off. The coating production lines in Shengze only have developed to more than 200. However, because the equipment and technology of most of the coating manufacturers in China are relatively backward and the grades of processed products are relatively low, the price competition between the same industries is fierce. In addition, although the domestic coating auxiliaries auxiliary machine equipment has been able to meet the most basic needs, and the advantages of price and supply convenience are obvious, but there is still a certain distance between varieties and quality.

At the same time, many of the coating agents and additives applied in the market have ecological problems. In China's textile coating, a large part of the products are produced by flammable and explosive solvent coating agents, which not only pollute the environment, but also pose a great threat to human health. In the face of the "green barrier" in Europe and America, they are increasingly restricted.

Zhao Xinzhe, technical manager of Zhejiang Jiahe nonwoven Finishing Technology Co., Ltd. pointed out that different finishing agents have different effects on the surface of nonwoven fabrics. Besides, the quality of the coating product is related to the quality and the quality of the coating agent. At present, most domestic finishing enterprises adopt coating solvent evaporation physical film forming technology and hot melt forming technology. Although the film formed by the coating agent is not completely integrated with the substrate, the coating agent can partially deepen the concave convex part of the nonwoven fabric surface. Although the durability of products after coating can be given, it will lead to an increase in the thickness of the product after coating, and at the same time make the product feel stiff and not very environmentally friendly.

Research on Ecological coating technology is imperative.

At present, the progress of domestic coating and drying technology is obvious. However, in order to better meet the challenges of green barriers and to bring more green, high-performance, high value-added and functional eco friendly textile finishing technology to ecological friendly coatings, it is imperative to develop in the long run.

Du Wenqin, a professor at Wuyi University, said that ecological textile finishing technology is closely related to the ecological environment of human existence. To develop ecotype coated plant products, research and development should be carried out in two directions: improving quality performance and adding new varieties of coating agents. Among them, the selection of ecological fiber raw materials is an important way to produce eco textiles, such as Lyocell fiber, natural colored cotton, polylactic acid fiber (PLA), chitin fiber, soybean protein fiber, bamboo fiber, degradable synthetic fiber and fiber made from recycled materials. Of course, there are a series of technical problems that need to be solved in coating finishing with these ecological fibers as raw materials. With the development of coating processing aids and additives, the coating materials develop from a single component to a composite type. The product develops from single function to multi-function, which enables the coating product to constantly bring forth new ideas and catch up with the trend of the world.