วันศุกร์ที่ 15 กรกฎาคม พ.ศ. 2554

Sustainable Organic Textiles

In this article I have decided to look behind some of the hype about organic textiles and their sustainability and find the materials which are truly sustainable and eco friendly. Global awareness of the real price of clothing is growing and consumers are pushing for more eco friendly apparel. There are more reported cases of people experiencing health problems such as rashes, allergies, respiratory problems and difficulties with focusing mentally due to chemical sensitivities and many have found organic clothing to be helpful in reducing exposure to the vast amount of toxic chemicals we are unknowingly exposed to on a daily basis.

COTTON

Textiles

Cotton is a wonderful fibre for making clothes but it is now recognized that conventionally grown cotton causes great harm both to the environment and to workers with its extensive use of pesticides and insecticides which cause ill health to people coming into contact with the chemicals and widespread pollution by soaking into water tables. Organic cotton is grown without chemicals and therefore does no harm to either environment or workers but is necessarily more labour intensive and furthermore fields must be free of chemicals for three years before the crop can be certified organic. There have been huge global increases in the demand for organic cotton and the problem now facing farmers is producing enough to meet the demand. LaRhea Pepper of Organic Exchange says" In order to encourage long term economically sustainable sources of organic fibre we need to be willing to discuss and implement models that acknowledge the value of the product from the farm gate and continuing right down the supply chain".

HEMP

Hemp really does seem to be one of the good guys. It has many excellent properties being environmentally positive with no need of pesticides and insecticides it actually improves soil where it is grown. It is drought resistant and can be grown in most climates. Textiles can also be processed from the fibrous stalks without the use of toxic chemicals and because it does not require high technology to process it is ideal to be processed locally increasing local employment and saving transport costs and pollution. Hemp has been used to make clothing for thousands of years and it is in recent times that it has become controversial. Cannabis is produced from hemp and growing hemp in the United States is illegal but it is produced in Europe and Asia and is now legal in Canada. It would seem a great pity not to utilize this highly sustainable textile.

BAMBOO

Bamboo is a material whose luxurious softness has been compared to cashmere. As a plant it is fast growing and highly sustainable and is mainly naturally organic. It does not require replanting after harvest but will regenerate from its vast root structure. Bamboo helps to improve soil quality and helps rebuild eroded soil.

There are two ways of manufacturing bamboo mechanically or chemically. The mechanical way involves crushing the woody parts of the plant and then using natural enzymes to break it down into a mush so that the natural fibres can be mechanically combed out and spun into yarn. Bamboo produced by this method is sometimes called 'bamboo linen'. However very little bamboo linen is manufactured for clothing because this method is labour intensive and costly. Bamboo fabric for clothing is mainly produced by chemical manufacturing which involves cooking the leaves and shoots in strong chemical solvents sodium hydroxide and carbon disulfide in a process called hydrolysis alkalization combined with bleaching. Both these chemicals have been linked to health problems. Low levels can cause tiredness, headaches and nerve damage. Carbon disulfide has been blamed for neural disorders in workers at rayon manufacturers. Because of health problems associated with this manufacturing method and damage to the environment it is considered neither sustainable nor environmentally supportable. The good news is that other newer manufacturing methods have been developed and are more benign and environmentally friendly. Bamboo fabrics can be produced without any chemical additives but ensure that it is eco certified look for Oeko-Tex, Soil Association, SKAL, KRAV or similar organic or sustainable certification body.

SOYA

This fabric is renowned for its softness, comfort, luster and drape combined with wash ability and durability. It is more expensive than organic cotton or hemp at this time and is seen as a new luxury product. One of the positives being talked about is the fact that the cloth is produced from a by product of food manufacturing of the Soya bean. Some Soya has organic certification but it is a small percentage.

My research did not lead me to anything very positive about the growing of soy but I fully acknowledge that there may be additional facts that I did not discover. Soy has been very aggressively grown with GM seeds in Argentina which has embraced GM culture. Crops were treated with glyphosphate during the growing season and a mono culture developed as other crops were driven off both by low prices and contamination from soy farmers spraying. New weeds resistant to glyphosphate are now prolific and further chemicals namely gramoxone(paraquat) and gesaprim(atrazine) have been introduced prior to planting. These practices are causing damage to stock and plants in neighbouring farms.In less than decade soya farming has driven people off the land, created serious ecological and agronomic imbalances, destroyed food security and led to dependence on technology controlled by a handful of multi national companies. I would suggest that before buying Soya fabrics it would be wise to check its credentials and whether it is certified organic.

Sustainable Organic Textiles

If you want to hear more about organic cotton visit http://www.sonesuk.com
Pan-uk

วันเสาร์ที่ 9 กรกฎาคม พ.ศ. 2554

Eco-Trendy Green Gift Ideas

The trend towards a green lifestyle is one we can all live with. The eco-trendy shopper this year will be shopping for not only the right gift, but for something that's earth friendly too. This year there are some new exciting green gift ideas for everybody on the green gift shopping list.

This year bamboo is one of the hot new innovative resources being used to make an amazing variety of earth friendly products that make great green gifts for everyone on your gift list this year. For instance textiles: you probably wouldn't think so, but did you know that bamboo is incredibly soft? In fact it's softer than cotton! Bamboo has a luxurious feel against the skin. Not only do bamboo textiles feel silky soft, they look great, with a luxurious quality to them, even after repeated washings, they remain softer than the finest cotton towels. Also keep your eyes out for bamboo kitchen utensil sets, cutting boards and even furniture for the house.

Textiles

What to look for in an eco-friendly gift.

  1. Is the gift appropriate for the person?
  2. Does the gift reduce energy consumption?
  3. Can the gift be re-used again and again replacing a disposable item?
  4. Can the gift be recycled or is it made of recyclable products?

Reducing energy use is a big part of living the green lifestyle. Smart green gift ideas that help save energy are a welcome gift for home owners. The new The Delta Water Amplifying Shower Head revolutionizes the showering experience. The dual-setting shower head offering a water-saving comfort spray of 1.85 gallons per minute, and a high-volume spray. The water-saving comfort spray setting operates at 1.85 gallons per minute, but thanks to the amplifying technology, you don't think you're sacrificing performance because it feels like the standard 2.5 gallons per minute water saving shower head. So you save water and energy. Programmable thermostats are another example of a green gift that reduces energy consumption. They give homeowners complete and accurate temperature control of their living environment. Typically installing a programmable thermostat is actually rather easy, and it can result in reducing home energy heating and cooling costs by as much as 35% and that's a significant savings of energy.

Books featuring earth-conscious tips are a thoughtful eco-friendly gift ideas too. There are a whole bunch of great green living books out this year from how to tips, to doing an eco-friendly home remodel, to educational arts and crafts projects for kids using earth friendly items natural from the house and garden.

If you hunt around a little you can even find a whole new world of earth friendly toys for kids including idibids the new line of plush characters for kids and role play toys from Green Toys including a very cute tea set.

Solar power is the way of the future and today you can power your entire home on energy rays from the sun but hooking someone up with a full solar energy array would be a bit eccentric, however there are lots of cool solar powered gifts for the home and garden that make an ideal green gift choice. The other day I found a solar powered gnome holding a lantern that's perfect for the garden. And there's a solar powered pool cleaner that works better than chlorine, or how about the solar powered fluorescent shed light that installs literally anywhere you want light.

Organic body care products are a nice gift choice for him or for her. They say you care because they are free from potentially dangerous chemicals and synthetic fragrances. Organic body care products are the all natural healthy alternative to the popular off the shelf bottles of chemicals they package up and market to the general public. They are available in an endless variety of delightful scents which are appropriate for men and women alike.

It's good to be an eco-trendy shopper and give green this year! Check-out the links below for more information.

Eco-Trendy Green Gift Ideas

Brandon is author of the popular Best Gift Ideas top ten list web page, and is introducing his new eco-friendly green gift ideas guide to earth friendly gift giving, featuring hundreds of gifts for everyone on your list, and an interactive top ten eco-trendy gifts poll.

วันพฤหัสบดีที่ 30 มิถุนายน พ.ศ. 2554

Batik Textiles Revisited

I've been having a love affair with exotic textiles for most of my life, or rather ever since I lived in the Far East as a young and impressionable woman in the mid 60's.  Malaysia to be precise.  And the textiles were the most exquisite batiks worn by the ordinary Malaysian women of the day.  At the time I only knew that I'd fallen in love with their marvellous prints, the variety of which seemed infinite.  The actual material was cotton and came in 2 x 1 metre lengths which were actually sewn to form a tube.  These were worn as simple sarongs with a blouse top.  But the two most striking things about these incredible materials were the strong colours and patterns.  These have stayed with me over all the intervening years.

In those years I managed to find a wonderful chain of shops in England named Anokkhi.  They sold wonderful and original prints from India.  The clothes were not cheap by any means, but much of the profits were ploughed back into the villages in India that produced such delightful clothing. The textiles themselves were made from the most sensual soft Indian cotton, sadly no longer available today due to the stringent Health and Safety regulations prevalent in the west.   They could not be fire proofed so sadly we now have to wear the more conventional fire proofed cotton.  But the wonderful original designs are still being used.  These are prints cut into wood blocks, some of which are several hundred years old. 

Textiles

Imagine my surprise and delight when after living in Thailand for over two years I discover, of all places, a road-side night market selling the very same batiks of forty years ago.  To my delight they still came in the 2 x 1 metre lengths or tubes, and still in the most amazing patterns and colours.  I'd spent two of the last three years trying to find unusual or original patterns of Thai, Malay or Indian origin, but without success.  So to find my ancient batiks in this little market was nothing short of a miracle.  A little research and a few books later and the mystery and history of batiks was solved.  They did indeed originate in India, travelling to Indonesia around the 15th century with the migration of groups of Indian people southwards.

The colours and patterns are incredibly beautiful and are so vivid with their never ending dot patterns, many of which tell a story.  In ancient times certain patterns and colours could only be worn by Royalty or the very wealthy.  Today batiks are not made by the traditional wax and dye techniques, which were not only time consuming but very expensive, but are printed.  However, if you want a traditionally made batik then they can still be made to order, but at a cost of course. 

Sadly, my source of batiks here in Thailand never seems to have any one pattern the same.  Once in that shop I am totally mesmerised by the sheer volume of the different patterns and colours and invariably lose all sense of logic as I delve through these fantastic works of art.  When by chance I think I've found the same pattern, closer inspection shows a difference.  This is what makes batiks so wonderfully intriguing.  And the chances of anyone wearing the same batik clothes as you are very remote, so you can remain a unique dresser.

What an amazing legacy, my happiness is complete and I spend many happy hours designing and making clothes or decorating my beautiful Thai home with these amazing prints and colours.  My greatest delight now would be to share my discovery. 

Batik Textiles Revisited

วันพฤหัสบดีที่ 2 มิถุนายน พ.ศ. 2554

Plant-Based Textiles and the Green Movement

Plant-based textiles have been an integral part of clothing manufacturing for thousands of years, of course, but certain plants are finding new life as part of ecologically-conscious green clothing. Here is a little bit about plant-based textiles and what is being done now.

Cotton has long been the go-to textile thanks to its versatility and comfort. But what many people may not know is that Philippinos have been blending it for years with the fiber from the pineapple, called "pina." Pina is obtained from the plant's leaves and fiber and it is not known for its strength. However, its delicate nature makes it a natural to combine with silks, and many couture gowns are being made with pina now.

Textiles

Hemp in a multitude of forms has been used in the manufacture of textiles for centuries, but it is presently enjoying a resurgence in popularity. Manila hemp, which is gleaned from the underside of banana tree bark is recognized and prized for being one of the strongest fibers in existence. Hemp textiles are extremely versatile and are used for everything from easy-care casual slacks to runway-ready fashions.

Soybean and corn are not plants that are usually associated with textiles, but they have become extremely popular members of the green clothing. Soybean fiber blended with cotton and other materials is notoriously soft and is a rising star in the production of infant and baby clothing; but soy and corn are strong enough to make adult shirts and outwear as well.

Those who are concerned about the environment can seek out green clothing that relies heavily on natural plant fibers. Many manufacturers take environmental responsibility a step further by recycling fabrics such as polyester into new and fashionable products.

The bottom line is: there are plenty of clothing choices we can make that will make a big difference to our planet's health.

Plant-Based Textiles and the Green Movement

ArcMate Manufacturing http://www.arcmate.com/ offers eco green clothing such as shirts, jackets, vests, as well as shopping bags, tote bags, purses and other products made from recycled materials. Billings Farnsworth is a freelance writer.

วันพุธที่ 1 มิถุนายน พ.ศ. 2554

Medical Textiles are Growing by Leaps and Bounds

Medical Textiles is one of the most rapidly expanding sectors in the technical textile market. Medical Textiles are the products and constructions used for medical and biological applications and are used primarily for first aid, clinical and hygienic purposes. It consists of all those textile materials used in health and hygienic applications in both consumer and medical markets.

For Medical Textiles the main requirement of the textile material is bio-receptivity and bio-compatibility at the application site in human beings. Eg: antimicrobial sutures based on nylon and polypropylene mono filaments. Surgeons wear, wound dressings, bandages, artificial ligaments, sutures, artificial liver/kidney/lungs, nappies, sanitary towels, vascular grafts/heart valves, artificial joints/bones, eye contact lenses and artificial cornea and the like are some of the examples of medical textiles

Textiles

Fibre Types used in Medical textiles for extracorporeal devices are as follows:

1. Hollow polyester fibre, hollow viscose used to create artificial kidney for removal of waste products from patient s blood.

2. Hollow viscose used to create artificial liver to separate and dispose of patients' plasma and supply fresh plasma.

3. Hollow polypropylene fiber, hollow silicone membrane as mechanical lung to remove carbon dioxide from patients' blood and supply fresh oxygen.

Asia being the chief producer and consumer of Technical Textiles. The consumption of Medical Textiles worldwide was 1.5 million tons in 2000 and is growing at an annual rate of 4.6%. The Indian market size of medical textiles was estimated to be INR 14.8 billion in 2003-04 and is expected to grow to INR 23.3 billion by 2007-08. Market is expected to grow by 8% p.a. Technical Textiles is the fastest growing branch of textile industries worldwide with bright prospects. The total global sale of Technical Textiles in 1995 was US bn. It is estimated to be US bn in 2005 and is expected to reach US6 bn by 2010.

Medical Textiles are Growing by Leaps and Bounds

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วันอังคารที่ 31 พฤษภาคม พ.ศ. 2554

Indian Textile Machinery Industry

Overview and Trends

Textile industry in India is considered as a pioneer industry, as India's industrializations in other fields have succeeded through the resources generated by textile industry. Though, from the early 1970s to the beginning of liberalization in 1992, the industry tended to be isolated as measures taken by the Government (with the apparent objective of protecting the cotton growers, the large labor force and the consumers) have constantly eroded its prosperity.

Textiles

World over, the Indian textile industry is considered as the second largest industry. It has the biggest cotton acreage of 9 million hectares and is considered as the third largest producer of this fiber. In terms of staple fiber production it comes fourth and sixth for filament yarn production. The country reports about one fourth of global trade in cotton yarn.

With over 15 million people employment, the textile industry accounted for 20 percent of its industrial production. Covering textiles and garments, thirty percent of India's export comes from this sector, in terms of exports it is the largest contributors for the growth of Indian economy. In spite of high capital and power cost, the Indian textile and garment sector's strength comes from the availability of cotton, lower labor costs, well skilled supervisory staff and plentiful technical and managerial skills.

Although very few countries are endowed with such resources, today's globalization has brought new opportunities for the India textile industry. Concurrently, it is exposed to threats, particularly from cheap imported fabrics. Thus, India has to fight for her share in the international textile trade. Even if it is assumed that WTO will mean better distribution of the world trade, the benefits for India will not be any different than for the other developing countries. The Indian textile industry would, therefore, have to not only rely on its strengths but should also endeavor to remove its weakness.

India's apparel exporters, though, have been employing various strategies to make sure that they remain competitive in the liberalized trading environment of 2005 and beyond. Many manufacturers are taking action for improving production efficiency through advanced automation system, re-engineering of production systems, merging separate production units and backward and forward integration of operations and are keen to expand their production capacity in anticipation of enhanced demand in 2005 and beyond Among other manufacture are seeking changes through diversifying their product ranges, exporting high value apparel and improving their design capabilities and some of are planning to raise added value by setting up joint ventures with foreign firms, to take benefit of their technical, design and marketing proficiency. Others are making relationships with foreign buyers to increase their marketing capability.

Support has also arrived from the Indian government in the removal of restrictions on investment by large companies and foreign investors. The Government has also provided assistance to expand the infrastructure for exporters and has given incentives for techno-logical up-gradation. Though, most important restriction is the inflexibility in labor laws, which cause it hard for large firms to cut their workforces when require.

Textile industry in tenth plan

The Tenth Five Year Plan of India (2002-2007) forecasted a GDP growth rate of 8 percent for which an industrial growth of 10 percent is predicted.

The aim of the Tenth Plan is to facilitate the textile and apparel industry to:

. Develop world class state-of the-art production facility to accomplish and maintain a leading global position in production and export of textiles and clothing.

. Withstand demands of import penetration and uphold a dominant existence in the domestic market.

. To accomplish these aims heavy funds are needed in technology and modernization in critical areas particularly in spinning, weaving, knitting, finishing and apparel sectors.

. The technology up-gradation scheme (TUFS) introduced in 1999 intended to make investments component attractive. This scheme has been established to promote modernization and technology up-gradation in the specified sectors of textile and jute industries.

. The Government of India has also declared the National Textile Policy-2000 to expand a sound and vibrant textile industry. The objectives and plunged areas of the national textile policy cover technology up-gradation, enhancement of productivity, quality consciousness, product diversification and so on.

Schemes to strengthen investment in textiles during the Tenth Plan cover:

Rearranging spinning capacity

At present nearly 38 million spindles are already existed. About 10 million old spindles required to be scrapped, and another 15 million spindles to be modernized. Adding on, about 3 million new spindles have to be set up during the Tenth Plan period.

Loomage

The decentralized power loom sector, which reported 68 percent share of the cloth in the country, is in very strong and immediate need of renovation. The textile package declared in the Central Government included renovation of the weaving sector with 2.50 lakhs semi-automatic/automatic shuttle looms and 50,000 shuttleless looms.

Finishing

There are nearly 2324 precessing establishments in the country of which 83 belong to composite units, 165 to semi composite and others 2076 are self-governing processing houses. Among of 227 establishments are modern, 1775 are of medium technology and 322 are obsolete establishments. Reconstruction of finishing units will need a huge financial expenditure.

Schemes for expansion and development of the knitting sector, technical textiles, and woolen and jute industries are to be considered. The textile Engineering Industry is to be encouraged to modernize and offer state-of-the-art technology to the textile industry and through focused textile machinery R&D efforts, domestic reaches and development are to be initiated.

Growth in the textile machinery

Due to high investments on renovation of plant and machinery in the textile manufacturing industry, the manufacturing of textile machinery, their parts and accessories rose last fiscal by 25 percent to Rs 1,668 crore from Rs 1,341 crore in the previous fiscal.

According to the Textile Machinery Manufacturers' Association of India (TMMAI), the industry also witnessed its capacity of consumption at 55 percent during the year.

But, on the other hand the total projected demand of Rs 4,200 crore of the textile industry, a major contribution was satisfied through imports. This has identified for an urgent requirement on the part of both the user-textile industry and the textile engineering industry (TEI) to start a joint assessment to reverse this movement, said the outgoing Chairman of TMMAI, Sanjay Jayavartanavelu.

On the event of the 45th annual general meeting of Textile Machinery Manufacturers' Association of India, Jayavartanavelu said the surge in demand for textile machinery has initiated the TEI to make production capacity bigger to satisfy the increasing demand, particularly in the spinning machinery sector. The units in the industry were dynamic to step up production to cut down the delivery period.

This is regardless of the truth that they had to compete with longer delivery schedules from main machinery suppliers. In spite of this, the TEI should make an effort to satisfy the demand in volume/quality and performance with effective after sales service.

The TMMAI Chairman felt amendment in fiscal policy and elimination of hurdles being faced by the TEI required to be effected to make the indigenous textile machinery sector gain strength and scale up its technology and export competitiveness. The areas of fiscal modification needed are letting down the rate of excise duty on textile machinery from 16 percent to the merit rate of 8 percent, continuation of the relaxation in excise duty, which should be extended to inputs required for making of specified textile machines.

The intermediate products required in producing textile machinery as well as spares should be put at four percent excise duty subject to actual-user stipulation. At the same time, the present customs duty concessions on specified machines must be detached and one common rate of import duty of 10 per cent should be charged for all textile machines.

The TMMAI Chairman also emphasize the requirement for early creation of a Rs 2,500-crore development fund for TEI to facilitate the units to use on R&D, infrastructure building, export promotion and plans on environmental protection.

Recent developments in technology

In the international textile and clothing trade, the elimination of decades old quota system has thrown up new challenges as well as unlocks new prospects for the Indian textile industry.

According to the vision statement made by the ICMF for the textile sector, by 2010 the Indian textile industry has the potential to have the market size of worth of $ 85 billion from the present size of $ 36 billion. This development can be gained by the opening of new domestic as well as export segments. Textile export could arrive at $ 40 billions mark by 2010 from current 12 billion dollar level. Result on export side can be measured satisfactory during the last six months. For receiving the prospective business, the textile industry has to move towards value added products. The most value addition in textile segment is created by the apparel segment. Processing, fabric manufacturing and spinning segments in order to make quality apparels will require up-gradation

During last decade, there has been observed fast progress in machinery/technology. A concise representation of modern developments in a range of areas is given below.

Spinning

Manufacturing facility in blowroom line has enhanced to 800 kg/hr with a prerequisite to work 3 mixings all together. To process broad range of cottons, the latest blowroom is provided with automatic bale opener with integrated mixer and cleaning systems. For the latest carding machine as a substitute of one licker-in, multiple licker-ins is built-in serially. And provide more stationary flats. For feed roll, doffer, web doffing, maintenance free digital drives are used. The whole card clothing can be separated with a less function of operation. For full flange of operation, a variety of systems like NEP control, flat control and waste control etc., are integrated.

For modern draw-frame machine, delivery speed up to 1000 mt/minute made possible with an alternative of automatic draft control mechanism which gives out requirement for gear change for controlling draft and delivery speed. In few machines separate deliveries can be restricted without help. Supplier also offers draw frame which can be connected to carding machine. It is stated that owing to digital autoleveller the precision measurement is in its height on an average one meter CV of sliver can be controlled below 0.4 percent.

Combers speed up to 400 nips/min is possible due to technological advancement. From latest comber up to 1.3 tones/day productions is achieved. Touch screens display system also provided with these machines. The display covers production data, process setting, machine parameters setting and fault message display. To save installation time many machines are provided with fully assembled in four modules.

Latest speed frame are offered in atomization system including all the operations. All the functional set ups can be fitted on electronic panel. Bobbin size 6" x 16" or 7" x 16" can be available. There is an availability of alternative of manual or auto doffing. Machines are provided upto 160 spindles capacity hence considerable saving in the operational cost possible.

In the latest ring spinning system winding geometries are further give to maximize result with less winding tension. Hence, superior draft up to 80 are received with higher spindle speed (above 20000 rpm). A number of other features of modern ring frames are adopted with inverter drive for spindles, independent spindle ring rail and drafting system drives, fast doffing system with no trailing ends. Ring frame up to 1344 spindles are provided. In presents rotor spinning system, diverse yarn can be spun in several part of the machine. It is feasible to get package of changeable density. All the technical factors and machine adjustment can be controlled by computer. In the latest rotor machine it is viable to make a package with 30% higher package density than old rotor machine.

In the latest winding machine path of ring cop from bottom to winding head is further developed. Hence, superior control of winding tension produces lower augmentation in hairiness. The adaptable knotting cycle combined with tailored acceleration dynamics facilitates to alter production system. The immediate controlled cylinder inverter and suction motor inverter are provided for energy conservation. Modern vortex spinning system is available to spin cotton yarn at a speed of 400 mt/min. The technology was previously applied for spinning synthetic blended yarn only.

The latest DREF spinning system can make numerous kinds of multi-component yarns. The drafting unit can manage all kinds of synthetic fibers such as aramid, preoxidised fiber, polyamide, phenol resin fibers and melamine fibers. The machine is able to perform with several cores. The manufacturing facility is achieved as high as 250 mtr/min and fineness of yarn can be from 0.5 to 25 nm.

Weaving
The important aspects of modern weaving preparatory/ weaving machines are reviewed as under:

Machinery producers of both weaving preparatory and weaving machines have received gain in technological aspects to make fault free fabric for the garment sector. Nearly all the machines are provided with electronic control panels and micro-processors controls which monitors and control the machine utility to satisfy the fabric quality need and modification in design styles.

Maintenance of machine has turn out to be stress-free due to proficient lubrication system and improved machine design and substitution of mechanical tools with electronic control system. There is an obvious progress to resource the components and auxiliary equipment from the selected good manufacturers rather than making themselves, hence decreasing the cost of the machines. In latest rapier looms weft insertion rate ranges from 1200 - 1500 mt/min. Many looms are provided with weaving a broad range of fabrics. In many weaving machines weft insertion rate is achieved at higher and ranges from 1800-2500 mt/min.

Latest sizing machine is provided with uniform size pick up facility across the warp sheet and for least amount hairiness and loss in elongation. These are maintained by temperature control and moisture control devices. Squeeze pressure can be maintained by programmable controller to synchronize the compressing at all the speeds. Stretch monitoring instrument is imparted to control the stretch.

Knitting

In recent times the quality requirements imposed on a knitting factory by its customer have become even more precise due to greater emphasis on the reproducibility in case of repeat order. Typically a modern knitting machine has following features as:

Automatic computation of fabric reduces speed, feeders per course, stitch/cm and elongation

Automatically managed thread infeed by inflowing the needed thread infeed per cm

Automatic management of height modification through computer

Automatic supervision of yarn infeed and yarn tension

Through user friendly software, computer helps to make the goods on the selected pattern

Processing

New generation processing machine incorporates microprocessor controls. Various process parameters can be programmed in microprocessor for strict adherence of processing conditions. Apart from good control, machines are also energy efficient and features are incorporated for the reduction of consumption of chemicals, water and steam etc. The developments are also taking place keeping environment requirement and eco-friendly processing while manufacturing the textile products and safer conditions for those involved in the manufacturing.

Process control or quality control

In the area of cotton testing, latest instruments are mostly available as High Volume Instruments (HVI) and are prepared with automatic sampling. They also evaluate short fiber content and maturity index values besides testing of length, strength and fineness parameters. It is stated that maturity values are fairly precise. Instruments are also provided with test color, trash neps and fluorescence values. Few suppliers are offering bale management systems.

For the manmade fibers and its connected instruments offered with the measurement in denier, tenacity, elongation and crimp properties. From the creel, robotic arm can carry the fiber samples automatically.

In the part yarn quality, latest evenness tester can measure, evenness, imperfection and intermittent errors at a greater speed. Many of them instruments are prepared to measure hairiness, diameter variation, shape, and dust as well as trash contents. Single thread strength testing machine are provided with a testing speed of 400 mt/min. The machine is prepared to take out 30000 tests per hour. It is noted that weaving operation of the yarn can be expected advanced with this machine. Some of the single thread strength machines are fitted with automatic yarn count determination device.

Yarn fault classification device has shifted to the winding machine from the laboratory. Data of entire yarn lot can be readable from the winding machines. Electronic check Board can perform the yarn grading, based on yarn output and observed by applying CCD camera and software to measure yarn report. Instrument can also offer fabric simulations if needed.

In fabric testing, automatic fabric inspection device can examine grey and single cotton dyed fabrics for all materials covering air bag fabrics and glass fiber fabrics. The imperfection can be recovered from their reports and images. In the area of process control and management ERP systems are establish which supply 3-tier solution covering the online data acquisition, offline data entry cum reporting device and intelligent business management device.

Conclusion

Today, Indian industry is extremely fragmented. In the organized spinning sector there are nearly 2300 players with 280 composite mills, There are 1000 weaving units and around 1,45,000 independent processing units and innumerable garment makers. The position of machinery technology is not well apart from the spinning sector. Nearly 100000 modern shuttleless looms are needed to set up and to satisfy the target by 2010. Processing sector will also require big amount of up-gradation. It is calculated that a total investment of 35 billion dollar might be needed to achieve the growth intended by ICMF.

Indian Textile Machinery Industry

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วันจันทร์ที่ 30 พฤษภาคม พ.ศ. 2554

What Are Geo-Textiles?

Geo-Textiles can be defined as "a fabric or synthetic material placed between the soil and a pipe, gabion or retaining wall; to enhance water movement and retard soil movement and act as a blanket to add reinforcement and separation." These are generally made up of woven, nonwovens and knitted type of fabrics. Geo-Textiles also known as Industrial Textiles, High Performance Textiles, Engineered Textiles, Technical Textiles and Industrial Fabrics are specially designed and engineered structures that are generally used in processes /services of non textile industries. They are materials and products manufactured primarily for their technical and performance properties rather than for aesthetic and decorative characteristics.

These are generally made up of woven, non-wovens and knitted type of fabrics. Geo-Textiles are the largest group of geo-synthetics in terms of volume and are used in geo-technical engineering, heavy construction, building and pavement construction, hydro-geology, environment engineering. Technical Textiles is the fastest growing branch of textile industries worldwide with bright prospects. The total global sale of Technical Textiles in 1995 was US bn. It is estimated to be US bn in 2005 and is expected to reach US6 bn by 2010. Asia is the chief producer and consumer of Technical Textiles.

Textiles

Uses of different types of Geo-Textiles are as follows:

Woven geo-textiles concrete bases used for coastal works, water ways, embankments and in forming geocell for road

Nonwoven geo-textiles used for Filtration, drainage, reinforcement between soil stone or aggregate and in roads, railways works, erosion prevention and separation. As filter fabric for dams, under drainage system liners for pile foundation, coated pvc and bitumen s to skin traction

Knitted geo-textiles used Knitted bags for protection of dam's riverbank etc. Warp knitted fabric of Kevlar yarns used in automobile and marine application.

It is also used with foundations, soil, rock, earth or any other related material as an integral part of human man made project, structure or system.

What Are Geo-Textiles?

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