Dyeing And Finishing Technology: It Is Estimated That The Cost Of Dyeing And Finishing Per Ton Of Fabric Can Be Reduced By 31%.

< p > in the whole a href= "http://sjfzxm.com/news/index_z.asp" > textile industry < /a > industrial chain, the position of printing and dyeing industry is very important, which ultimately reflects the level and value of textile fabric products.

At the same time, printing and dyeing industry is a very serious industry for energy consumption, water consumption and discharge in the textile industry. The traditional cotton knitting dyeing process is mainly followed: 98 C high temperature drifting, 60 C dyeing and 95 C soaping. During the whole dyeing and finishing process, the drifting drifting and soaping must be controlled above 95 degrees C, so as to achieve the ideal processing effect.

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＜p＞　　傳統(tǒng)的染整加工理念認為，棉纖維除纖維素外，還含有蠟質(zhì)、含氮物質(zhì)、果膠、灰分、色素等天然共生物，這些天然共生物在練漂階段必須全部去除，這樣才能滿足后續(xù)染色的要求，練漂工藝一般采用高溫強堿的化學(xué)方法將織物在95~100°C的高溫中處理30~60分鐘，通過燒堿、表面活性劑、雙氧水等化學(xué)品的水解、皂化、乳化、凈洗、增溶、氧化以及溶解等物理化學(xué)作用將上述的天然共生物以及沾附的其他雜質(zhì)去除，在如此強烈的化學(xué)作用下，棉纖維上的天然共生物(包括有益的棉蠟等)被去除殆盡，所以傳統(tǒng)工藝耗能高，織物損耗大，排污嚴(yán)重，手感粗糙，布面折痕和擦傷非常明顯，隨著國家在能源和排污方面的政策的不斷出臺，傳統(tǒng)工藝的應(yīng)用局限性越來越明顯，使用傳統(tǒng)工藝的染廠在能耗和環(huán)保方面的壓力也越來越大，從而促進了染整工藝逐漸向低能耗、

In recent years, with the rapid development of cotton knitted processing auxiliaries and equipment, low temperature processing and continuous continuous machining have gradually become the two main development trends.

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< p > > a href= "http://sjfzxm.com/news/index_z.asp" > low temperature < /a > scouring and bleaching is one of the most important development trends of cotton knitted scouring and bleaching process. The low temperature scouring and bleaching process of the cotton fabric with high retention and co culture, which is composed of biological enzymes and hydrogen peroxide activators, has been successfully applied to the low temperature scouring and bleaching process of the whole cotton fiber processing technology at 60 degree temperature and low temperature dyeing and finishing. It has successfully drifted the scouring and bleaching temperature from 98 to 60 degrees by using enzyme enzyme scouring, low-temperature scouring and low-temperature activation of hydrogen peroxide. The enzyme is alkaline pectinase, which can effectively hydrolyze pectin on cotton fibers at 50~80 50~80 and achieve the effect of targeted impurity removal.

Hydrogen peroxide activator is an amino nitrile compound. Under alkaline conditions, it can produce peroxide carboxylic acid with higher oxidation-reduction potential than HOO- decomposed by hydrogen peroxide. The peroxide carboxylic acid has stronger bleaching capacity than hydrogen peroxide, and can be bleached at low temperature. Therefore, the processing condition is mild, which can reasonably retain and effectively control the total biological content of cotton wax and so on, and can greatly reduce energy consumption, reduce fabric loss, reduce pollution and improve the handle and cloth quality. The technology has achieved normal industrial production, and has successfully selected Sixth Batch of "China's printing and dyeing industry energy-saving and emission reduction advanced technology recommended catalogue".

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< p > 60 degree scouring and bleaching process can reduce sewage, reduce wastage, improve hand feeling and improve the quality of cloth. It is mainly due to the retention of a considerable amount of cotton fiber and other useful cotton products at 60 degree low temperature. Dyeing at less than 60 degrees can effectively retain the common organisms left by low temperature scouring and bleaching.

Most of the reactive dyes currently used can be dyed below 60 degrees. By optimizing the dyeing conditions and controlling the dyeing process reasonably, reactive dyes can be dyed with the required dyeing depth under the condition that the fabric contains a considerable amount of cotton wax, and can be evenly dyed (little residue of traditional technology, such as cotton wax and so on). Thus, the ideal dyeing effect can be obtained, and the color fastness is also in line with the requirements. This is also essential for the realization of the whole low-temperature dyeing and finishing process.

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< p > < a href= "http://sjfzxm.com/news/index_z.asp > > /a >, from the whole processing flow, it is very limited to achieve 60 degree low temperature scouring and bleaching and 60 degree dyeing.

在傳統(tǒng)工藝中，練漂和皂洗工序的加工溫度都要求在95℃以上，如果僅在練漂工序?qū)崿F(xiàn)了60℃加工，而后續(xù)仍然進行95℃高溫皂洗，那練漂工序所保留的棉蠟等有益的共生物同樣會被大量去除，這樣60℃練漂工藝在排污、損耗、手感和布面效果等方面所獲得的優(yōu)勢將不復(fù)存在，所以只有實現(xiàn)60℃練漂、60℃染色、60℃皂洗全流程的低溫加工，才能將低溫工藝的優(yōu)勢保留到最后，最終獲取最大的綜合效益，實現(xiàn)印染行業(yè)的節(jié)能減排，通過合適的低溫皂洗劑的制備及其相應(yīng)的工藝過程的開發(fā)，將皂洗溫度從95℃降至60℃，既能達到產(chǎn)品所需的皂洗效果，又可以保留通過低溫練漂所留下來的棉纖維上有益的天然共生物，該技術(shù)已經(jīng)實現(xiàn)正常工業(yè)化生產(chǎn)。

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< p > because of the obvious difference in the processing concept and processing technology between the cryogenic process and the traditional process, this technology aims to master the technological structure of the cryogenic process through the systematic research (rationalization of the technological formula and various performance indexes of the fabric after processing), and the machining characteristics of each processing ring (including scouring, bleaching, dyeing, soaping and finishing) are different from the traditional processing characteristics, so as to realize the industrialization of the research on the integration technology of the high retention 60 cotton low temperature dyeing and finishing process.

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