Textination Newsline

A significant part of carpet waste consists of petroleum-based polypropylene. As a non-recyclable product, disposing of it has previously meant incineration or landfill. However, a new solvent is now making it possible to recover virgin-standard polypropylene from carpet waste — with no perceptible reduction in quality. Developed by the Fraunhofer Institute for Building Physics IBP and its partners, the process also involves costs that are quite competitive. The development has taken place as part of the ISOPREP EU project.

The EU alone produces around 1.6 million tons of carpet waste every year. The majority of this ends up being sent to landfill or incinerated, as carpet is a composite material that is not suitable for purely mechanical recycling methods. With carpet waste analysed in the project consisting of around a quarter polypropylene, a petroleum-based plastic, the result is a great deal of resources going to waste.

Carpet recycling now possible thanks to a new process
A team of researchers, including from Fraunhofer IBP, has now developed a new recycling process as part of an EU project named ISOPREP (see logo). “For the first time, this is making it possible to recover polypropylene from carpet waste — and the outcome is virgin-quality,” says Maike Illner, a researcher at Fraunhofer IBP. Not only does this allow the recovered polypropylene to be used in lower-quality products (in a process known as downcycling), but it also means that the quality is similar to that of newly manufactured polypropylene, making the material suitable for high-quality products too.

The process is based on a special solvent in the form of an ionic liquid. With the right components, it is able to selectively extract polypropylene from carpet fibers. Before the team of experts applies the solvent, the carpet waste is cleaned — something which involves removing as much of the backing as possible — and broken down. Once the pretreatment is complete, the waste is fed into a reactor in which it undergoes treatment using the solvent. The polypropylene is selectively dissolved in the solvent, a method that provides an effective way of removing dyes and other additives. The process is already being used on an extensive laboratory scale involving several liters of the solvent — and now, the research consortium has set its sights on scaling the process up to a pilot plant with the ability to recycle a ton of carpet waste per day. The pilot plant is set to commence operation by the end of the project in March 2022.

Costs and environmental impact
A recycling process can only be deployed on a large scale if its costs are competitive. For this application, this means retaining as much of the expensive ionic liquid as possible in the cycle. “If loss rates can be kept to one percent or less, there is potential for the costs of the process to rival those of producing new polypropylene,” explains Illner. “We know this thanks to a preliminary economic analysis that we conducted at Fraunhofer IBP.” The analysis involved the Fraunhofer researchers investigating the quantities of material and energy that would be required for the process and what kind of product would be output, and then calculating the associated costs. The team also considered how the costs would develop over the long term.

Fraunhofer IBP is focusing on the ecological aspects of carpet recycling. It is able to draw conclusions from factors including a lifecycle assessment, which sheds light on the emissions that are produced during the recycling process, for example. If the consortium is able to achieve its aim of keeping solvent loss rates to one percent or less in this case too, primary energy requirements and greenhouse gas emissions will remain on a similar scale to those involved in producing new polypropylene.

Potential for transfer to other polypropylene waste streams
While carpet waste is the focus of this particular project, the process that has been developed has potential applications far beyond it. The experts involved believe that it could be transferred to a whole host of waste flows that contain polypropylene and are unsuitable for conventional recycling methods. “One example is polypropylene products that contain dyes and additives,” says Illner. “Until now, it has been difficult to extract them from plastic, which means that the recycled polypropylene has only been suitable for use in lower-quality products.” The new process separates the polypropylene not only from other materials, but also from dyes and other additives, allowing it to be used in high-quality applications.

This project has received funding from the European Union’s Horizon 2020 research and innovation program under grant agreement no. 820787.

• Industrial park under construction

Baku (GTAI) - The Azerbaijani textile and silk industry is going to have a future again after a dramatic slump. Several initiatives are helping the traditional industry to make a fresh start.

Azerbaijan wants to revive its once strong textile, silk and clothing industry. In 1990, the sector still accounted for just under 18 percent of the total industrial production – in 2017 it was just 0.5 percent. Future investment activities will be determined by several initiatives. These include the implementation of programs for the production and processing of cotton and silk cocoons for semi-finished and finished goods, the establishment of an industrial park for light industry in Mingatchevir and the establishment of branches of the Azerkhalcha company for hand-woven carpets.

New projects in cotton processing on the horizon
At the beginning of the 1980s, cotton cultivation boomed in the country with an annual harvest of more than 1 million tons of raw cotton. The collapse of the Soviet Union, the transformation crisis in the 1990s and general neglect almost brought the industry to a standstill. In 2015, the harvest reached a historic low of 35,000 tons of raw cotton.

But the turnaround has begun. In 2017, 207,000 tons of raw cotton were harvested (forecast for 2018: 250,000 to 260,000 tons). A downer is the low average yield of 1.52 tons per hectare (2017). The government announced increased support for soil irrigation and technical equipment for manufacturers. By 2022 the harvest is expected to rise up to 500,000 tons per year.

The "State Program for the Development of Cotton Growing in the period 2017 to 2022" adopted on July 13th 2017 is a guideline for the further development. Projects are planned for the renewal of existing and the construction of new cotton ginning mills and processing of cotton fibers into yarns, fabrics and finished products. By mid-2018 there were eight spinning mills in the country with a total annual capacity of 44,600 tons of yarn. Above all among the yarn producers in Uzbekistan are the companies Mingatschewir Textil, MKT Istehsalat Kommersiya, ASK Textil Sumgait and Azeripek (better known as Ipek Scheki).

Silk industry to be expanded
Since 2016 the silk industry, which came almost to a standstill, has now been on the move again. On November 27th 2017 the "State Program for the Development of Silkworm Breeding and Processing of Mulberry Silkworm Cocoons for the period 2017 to 2025" was adopted. The program defines projects to revitalize the sector. The annual production of cocoons is expected to rise to 6,000 tons by 2025, ensuring an annual production of up to 600 tons of raw silk. In 2017 244 tons of cocoons were produced after 71 tons in 2016 (forecasts for 2018 and 2019: about 500 and 1,000 tons respectively).

The modernization of the silk combinate Azeripek in Scheki is at the top of the project list. The contact organization is the Azerbaijan State Industrial Association, to which Azeripek and other companies are reporting (http://www.ask.gov.az). The construction of a new silk spinning mill with an annual capacity of 3,000 tons of yarn is planned.

Established in 1931 and later expanded the Silk Combine in Scheki was the flagship of the silk industry in the Soviet Union in the 1970s and 1980s with some 7,000 permanent employees. It produced up to 400 tons of raw silk per year and supplied over 100 factories with silk yarn and twist. Inefficient privatization, financial problems, lack of raw materials and sales difficulties repeatedly led to production stoppages. Today's capacities allow an annual production of up to 135 tons of raw silk only. As a result of technical problems, the factory is unable to produce finished fabrics.

Industrial park for light industry under construction
In the in 2016 established Industrial Park for Light Industry in Mingatchevir, nine factories for the production of textile and clothing products (cotton, acrylic and wool yarn, hosiery and apparel) and other light industry products (leather footwear and cosmetics) are to be built. The construction of more production facilities is planned. In February 2018 the company Textile Mingatchevir opened the first two factories in the industrial park. It intends to produce up to 20,000 tons of cotton and blended yarn annually. Capital expenditures were USD 46 million.

Azerkhalcha revives traditional carpet art
Azerkhalcha, the company for the production of hand-woven carpets, has an ambitious goal: 30 regional carpet weaving mills are to be established by 2020. By the end of 2017 ten branches have already been opened. A further 20 will be added in 2018 and 2019. Azerkhalcha was founded in 2016 on the initiative of the government. In 2018 and 2019, the state will invest around USD 22 million in the construction of new branches and a wool processing factory.

From 2020, approximately 5,000 employees will produce hand-woven carpets under the Azerbaijan Carpet label for domestic and foreign markets. The expansion plans for the production of hand-woven carpets result from the in 2018 adopted state program for the development of carpet art in Azerbaijan and the Nakhichevan Autonomous Republic for the years 2018 till 2022.

Azerbaijan offers opportunities as a production location
Azerbaijan can score with some advantages as a production location for the textile and silk industry as well as for the clothing industry. These include a sufficiently available and quickly trained labor force, low wage costs, tax and other preferences in industrial areas and good conditions for the sale of the goods.

Good sales opportunities result from the free trade agreements with the countries of the Commonwealth of Independent States and the export opportunities to Turkey. No import duties have to be paid for exports to these countries. Clothing manufacturers from EU countries with the intention of exporting to these countries can benefit from this. Several companies, especially from the Baltic States, are currently exploring their opportunities for a market entry.

The Azerbaijan Textile Industry Association sees a need for action on the part of the government with regard to the framework conditions for the domestic clothing manufacturers. For example, the tariff burden on imports of accessories such as adhesives, buttons and snap fasteners and zippers should significantly be reduced.

Leading manufacturers of apparel and other finished textile products include Baku Textile Factory (Baki Tekstil Fabriki), Accord Textil (Agstafa, part of the Accord Industrial Holding), Alyans Tekstil (Sumqayit), the apparel factory in the Gilan-Textile Park (Sumqayit), and Debet Uniform (Baku). The factories mainly produce workwear and outerwear.

Flatwoven or tapestry-woven carpets and textiles have been made by generations of weavers in all corners of the world. The technique lies at the heart of the history of textile weaving, but kilims and tapestries remain as relevant and important in the world of contemporary design and interiors as they have ever been.
 
For some people, the mention of a flatwoven rug instantly suggests an Anatolian kilim, for others it is a tightly woven Caucasian sumakh or a double-sided striped jajim, an Iranian eating cloth called a sofreh, a Navajo rug, a French Aubusson carpet or a Moroccan kilim. The visual language and identities of the flatweave are even more diverse than those of pile carpets.

To comprehend the relevance of flatwoven rugs in today's market, you only have to look at some of the previous winners of the Carpet Design Awards and the range of beautiful designs for contemporary flatweaves offered at Domotex and beyond. While flatweaves traditionally had a utilitarian purpose such as to decorate the home, to serve as various covers, as mule saddles or to wrap food, today they are a popular floorcovering choice the world over. The method with which they are woven lends itself to creating flat planes of colour and geometric patterns.
These traditional tribal designs perfectly suit our contemporary design sensibilities currently focused on the minimalist aesthetic. The pure blocks of colour, simple stripes or checks that flatweaves offer are ideal for modern interior spaces. In addition flatweaves are often offered at lower price points than pile carpets.

Over the last five years the design industry has been increasingly focused on the concept of craft, makers, handmade goods, and with designs that are easily recognised as handwoven. Flatweaves fit clearly into this trend. Their flat surfaces are a perfect way to show off excellent quality wool, accomplished weaving and brilliant colour, all of which can be the deciding factor when choosing a rug. There is something very open and honest about the design of a kilim, a characteristic much appreciated by design savvy buyers who are able to recognise the integral, genuine texture that the flatwoven surface offers.

Some examples of highly desirable and popular kilims on the market today include Hamburg-based Naziri's super chic Iranian kilims that have won numerous Carpet Design Awards, four of them over the last two years Their simple tribal patterns have a traditional soul but a contemporary perspective.

Werner Webber's Mazandaran kilims from Northwest Iran are eye-wateringly beautiful in design and intense in colour, akin to works of modern art. Other brands producing striking flatweave designs include Zollanvari, Edelgrund and Rug & Kilim, a New York-based brand whose Swedish folk art inspired flatweave Marta Stripe won Best Traditional Design at the CDA 2016.
 
Flatweaves have been well represented during the eleven years of the Carpet Design Awards and many have gone on to win a coveted prize, proof that they are an important element within the language of contemporary carpets. For the 2017 edition of the CDA, flatwoven rugs have been granted their own 'best of type' category. It is clear that it will be a popular and highly competitive part of the awards.