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    The New Technology Is Expected To Reduce The Dyeing And Finishing Cost Per Ton By 31%.

    2014/8/5 22:15:00 37

    ProcessingNew TechnologyCloth Dyeing And Finishing

    < p > technological progress is the key factor of < a href= "http:// www.91se91.com/news/index_c.asp" > energy saving and emission reduction < /a >, and is an important way to achieve energy saving and emission reduction.

    By improving production technology, using high efficiency auxiliaries, shortening the technological process, adopting low energy consumption and low pollution discharge technology, the purpose of energy saving and emission reduction is achieved.

    At present, the development trend of international textile technology is guided by the production of ecological textiles and green manufacturing technology, starting from various channels such as technology, auxiliaries, equipment, etc., to seize the source, pay attention to the ecological problems in every link of the production process, strive to optimize the process, and reduce the consumption of chemical agents, water and energy, so as to achieve the goal of high efficiency, high speed and environmental protection.

    < /p >


    < p > in the whole industry chain of textile industry, 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, the printing and dyeing industry is a serious industry of energy consumption, water consumption and pollution discharge in the textile industry. The traditional cotton knitted dyeing process mainly follows: 98 degree high temperature scouring and bleaching, 60 degree dyeing, 95 degree soaping, < a href= "http:// www.91se91.com/news/index_c.asp" > process < /a >, during the entire dyeing and finishing process, the scouring and bleaching and soaping must be controlled at 95 degrees Celsius, so as to achieve the desired processing effect.

    < /p >


    <p>  傳統的<a href="http://?www.91se91.com/news/index_c.asp">染整</a>加工理念認為,棉纖維除纖維素外,還含有蠟質、含氮物質、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,這樣才能滿足后續染色的要求,練漂工藝一般采用高溫強堿的化學方法將織物在95~100°C的高溫中處理30~60分鐘,通過燒堿、表面活性劑、雙氧水等化學品的水解、皂化、乳化、凈洗、增溶、氧化以及溶解等物理化學作用將上述的天然共生物以及沾附的其他雜質去除,在如此強烈的化學作用下,棉纖維上的天然共生物(包括有益的棉蠟等)被去除殆盡,所以傳統工藝耗能高,織物損耗大,排污嚴重,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,傳統工藝的應用局限性越來越明顯,使用傳統工藝的染廠在能耗和環保方面的壓力也越來越大,從而促進了染整

    Technology has gradually developed towards low energy consumption, low emission, high quality and high output. In recent years, with the rapid development of auxiliaries and equipment of cotton knitted processing, low temperature processing and continuous continuous machining have gradually become the two main development trends.

    < /p >


    < p > low temperature 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 technology, which is composed of biological enzymes, hydrogen peroxide activators and other low temperature scouring and bleaching processes, is a low temperature scouring and bleaching process of 60 degree low temperature dyeing and finishing technology. It has successfully drifted the bleaching temperature from 98 to 60 degrees Celsius by means of biological 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 C 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".

    < /p >


    < 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.

    < /p >


    < p > the same reason, 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,如果僅在練漂工序實現了60℃加工,而后續仍然進行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勢將不復存在,所以只有實現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勢保留到最后,最終獲取最大的綜合效益,實現印染行業的節能減排,通過合適的低溫皂洗劑的制備及其相應的工藝過程的開發,將皂洗溫度從95℃降至60℃,既能達到產品所需的皂洗效果,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,該技術已經實現正常工業化生產。

    < /p >

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