Study of Air Consumption on Air Jet Weaving Machine

As it is well known, power consumption due to compressed air is the main disadvantage of Air jet loom when compared to rapier and projectile looms. This is making air jet less preferable where energy cost is the problem, despite their high production speeds. Studies which have been taken to reduce them, included manufacturing of different parts i.e. researches have been taken place on the manufacturing levels. But, we decided to reduce the consumption of air which may be due to some wrong settings, ignorance, etc. without any investment which can give profits to the mill by reducing the consumption of air. A decrease of air consumption by 18% was accomplished in a weaving mill by just changing the process parameters consisting mainly the blowing time of nozzles. By improving work practices i.e. by implementing KAIZEN we could save the compressed air.

Introduction to AIRJET

For the weft insertion mechanisms of air jet looms, the profile reeds with sub-nozzle systems are the most advantageous in terms of improving high speed weaving and wider cloth width. Not only the airflow from the main nozzle and sub-nozzles but also the airflow in the weft passage is closely related to the flying state of the yarn at the time of weft insertion in this system. In order to manufacture high quality textiles with air jet looms, it is necessary to establish optimum weaving conditions. These conditions include the supply air pressure and air injection timing for the main nozzle and sub-nozzles according to the kind of well yarn. Energy saving is the most important of the technical subjects related to air jet looms today. Research about the improvement in performance of main nozzles and sub-nozzles, which plays an important role for weft insertion, has been performed by various researchers.

Although some effort has been made to improve the efficiency of compressed air usage, the effort has not been uniform. There is still a critical need to understand the energy loss or consumption in filtration, distribution and machine usage in the textile industry. Due to technical barriers, reducing energy consumption by compressed air systems has been viewed as a complicated task.

Intensive efforts have been made by researchers and air-jet loom makers to overcome this problem and achieve a dramatic reduction in air consumption without any decrease in loom performance and fabric quality, but due to faulty mill practices and ignored settings, air consumed by looms is on higher side. So, our project aims to reduce the air consumption significantly, by optimizing some loom parameters. These parameters, includes mainly the relay nozzles because they consume 80% of the compressed air produced.

Objective: To study the consumption of air in air jet weaving machines

Specific Objective: Reduction in the consumption of air on existing machines

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Textile industry to showcase latest achievements at QITMF

The 11th China (Qingdao) International Textile Machinery Fair (QITMF 2010) will be held in Qingdao International Convention Center, Shandong on 15 - 17 September 2010.

Riding on the success of the past ten years, the Fair is rooted in Shandong with influences spanning over Northern China and even the entire country. As a professional platform for communication within textile industry, the Fair was founded in 2000 and is an ideal choice to showcase the innovative textile machinery to buyers. This exhibition is bound to record greater achievements to attract the textile industry in Northern China.

The unique geographic advantages supporting tremendous market potentials
As China's key base for textile and apparel production, the production scale of textile products in Shandong ranked third in the Country, with 2 million people engaged in the industry - about a quarter of the province's total workforce. The output amount of yarn, cloth and home textile of Shandong also ranked first in the country. From the first three quarters of 2009, the province's export amount was up to 11.73 billion U.S. dollars, equivalent to a 15% increase over last year.

The Fair is stationed in Qingdao - Olympic Sailing Capital of the country, the city of business and trade. Led by the three biggest international textile trading corporations namely Cherry Group Co., Ltd., Qingdao Textiles Group and Qingdao Yijia International Trade Group Co., Ltd., and 78 private owned import and export textile enterprises, Qingdao has become a wonderful showcase of the strongest economic growth in the Province.

Diversified theme zones attracting both international and domestic buyers
QITMF 2009 was divided into five theme zones, including Knitting Machinery Zone, Dye & Finishing Machinery Zone, Spinning Machinery Zone, Weaving Machinery & Label Making Machinery Zone, and Printing Machinery Zone. The division of zones brought convenience to buyers in their procurement of machinery.

The Fair was supported by leaders in the textile industry with enthusiastic response. More than 110 famous exhibitors from PR China, Japan and Taiwan Province etc, participated in QITMF 2009, including Nan Shing Machinery Ltd., Jakob Mueller Machinery (China) Co., Ltd., Willknit Machinery Co., Ltd., Tit Fai Engineering Co., Ltd., Shanghai Shengyong Textile Machinery Co. Ltd., Taizhou City Xingwei Textile Machinery Co., Ltd., Zhongda Optical Instruments Co.,Ltd., Zhejiang Jinheng Numerical Control Science & Technology Co., Ltd. etc.

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QITMF 2009 – a great success

With the strong support from exhibitors and buyers, The 10th China (Qingdao) International Fair on Textile Machinery, Dyes, Auxiliaries and Textile Chemicals (QITMF 2009) closed with success on September 17, 2009 at Qingdao International Convention Center, Shandong Province, PR China. Recognition by industry players has reinforced the fair's professionalism and internationalism as the premier platform for business and technology exchange.

Leaders from textile associations and honorable guests showed their support and attended the show on the first day, including Mr. Xu Guangning, General Secretary of Shandong Province Textile Industry Association and Ms. Zheng Mingmei, General Secretary of Qingdao Textile & Garment Association, etc. They had given their appreciation and recognition to QITMF 2009.

112 exhibitors from Japan, PR China and Taiwan Province, etc, have participated in QITMF 2009 and occupied 5,000sqm exhibition area. Under the economic downturn, the 3-day show still recorded 4,000 visitor flow of buyers and professionals from the industry attending. Among them, some were repeated visitors, and some come with concrete purchasing requirements. As advised by Nan Sing Machinery Limited and Jakob Mueller Machinery (China) Co. Ltd, they are able to confirm deals onsite. According to onsite visitor survey, most visitors are from industry of yarn, knitting, underwear, glove knitting, hosiery, dyeing and finishing, printing and garment, etc, quality of visitors is highly recognized.

QITMF 2009 has successfully acted as the bridge between exhibitors and visitors for business and information exchange. Most exhibitors expressed that they are satisfied with visitors' quality, many visitors were serious buyers, onsite orders were confirmed and enquiries were received. Representatives from renowned local enterprises, including Luthai Textile, Yantai Spandex, Shandong Demain Group, Shandong Dashing Cashmere Products, etc, have visited the exhibition. According to onsite survey, over 80% visitors satisfied with the overall show performance. It was agreed that QITMF is the most professional textile machinery fair in Northern China providing the professional platform for business and information exchange.

The 10th China (Qingdao) International Fair on Textile Machinery, Dyes, Auxiliaries and Textile Chemicals is jointly organized by China Council for the Promotion of International Trade Shandong Sub-council, Shandong Province Textile Industry Association, China Chamber of International Commerce Shandong Chamber of Commerce, Shandong Province Textile & Garment Association, Qingdao Textile & Garment Association, Qingdao Haiming International Exhibition Co. Ltd and Hong Kong Adsale Exhibition Services Ltd, and co-organized by Qingdao Haiming International Exhibition Co. Ltd and Beijing Yazhan Exhibition Services Ltd. 

 

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Textiles And Clothing Industry Sector Can Re-Employ 1 Million Workers

The textiles and clothing industry can re-employ about one million workers who may lose jobs this year and create another 2.5 million additional jobs in the next couple of years for the poorest and least educated among our work force, if the available policy space is used judiciously. This industry is the most effective vehicle we have for ensuring inclusive growth with minimal government expenditure.

The following are the major adverse factors currently impacting the industry:

-Declining exports and UVR
-Huge incentives available in competing countries
-Insufficient working capital because of declining profitability
-Uncompetitive raw material and input costs
-Volatility in currency movements

The stimulus packages of 7/12 and 2/1 have not addressed any of these issues effectively. Releasing funds for TUFS for the period up to 30th June 2008 (which were due around one and a half years back), a partial reinstatement of interest subvention on export credit that had been withdrawn from October 2008 and some cosmetic changes in duty refunds incorporated in the packages do not have the potential to rescue this industry from its current crisis and to lead it to a path of sustainable growth.

Declining exports and UVR

DGCI&S figures show significant and persistent decline in T&C exports. In August and September 2008, there has been export deceleration by 2.3 percent and 8.8 percent respectively, compared to the same period of 2007. Data available from USA for January-November 2008 show that their imports of T&C products from India during this period not only had a negative growth compared to the previous year, but also registered a decline of 4 percent in UVR. The situation in the other major markets is similar and the subsequent months will be substantially worse because of the increasing impact of global economic crisis.

Incentives Provided by Competing Countries

Most of our competing countries have implemented rescue packages for their T&C industries, in the context of the current global economic meltdown. Some examples are given below:
China-
-In July 2008, China announced a 2-4 percent increase in the rates of VAT refund on T&C exports to take them uniformly to 13 percent.
-In October, they increased VAT refund further to 14 percent.
-From January 2009, it has again been hiked to 15 percent.






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