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Photo: CHT
26.05.2023

BEZAKTIV ONE: New Reactive dyes range by CHT

  • Reactive dyes for water and energy saving dye processes with significantly shortened process time

BEZAKTIV ONE covers a broad color spectrum with tinctorial very strong dyes. This enables a cost-efficient dye process with significantly less dye and salt. The excellent wash-off behavior allows short rinse cycles at lower temperatures and therefore offers further ecological and economic advantages. The dyes are particularly suitable for durable textiles due to their good multiple wash fastness.

Cellulosic fibers are often dyed with reactive dyes, as these are commercially available in a wide range of colors that result in dyeings with high wash fastness. However, reactive dyeings require a lot of water due to the necessary rinsing processes. Due to increased ecological requirements, the development of energy and water saving processes is not just a trend, but rather a core prerequisite for new dyes.

A minimal number of rinsing baths and generally lower temperatures for dye exhaust, rinsing and soaping contribute to an overall efficient water and energy saving dyeing processes.

  • Reactive dyes for water and energy saving dye processes with significantly shortened process time

BEZAKTIV ONE covers a broad color spectrum with tinctorial very strong dyes. This enables a cost-efficient dye process with significantly less dye and salt. The excellent wash-off behavior allows short rinse cycles at lower temperatures and therefore offers further ecological and economic advantages. The dyes are particularly suitable for durable textiles due to their good multiple wash fastness.

Cellulosic fibers are often dyed with reactive dyes, as these are commercially available in a wide range of colors that result in dyeings with high wash fastness. However, reactive dyeings require a lot of water due to the necessary rinsing processes. Due to increased ecological requirements, the development of energy and water saving processes is not just a trend, but rather a core prerequisite for new dyes.

A minimal number of rinsing baths and generally lower temperatures for dye exhaust, rinsing and soaping contribute to an overall efficient water and energy saving dyeing processes.

BEZAKTIV ONE dyes can be dyed, rinsed and soaped between 40 and 60 °C. Therefore, the BEZAKTIV ONE exhaust dyeing process is significantly shorter compared to conventional reactive dyeing processes, where temperatures between 60 and 98 °C are required. This advantage means savings in process time and higher productivity for the textile dyer.

The advantages become particularly clear when dyeing medium to dark shades with the BEZAKTIV ONE process. Due to the high fixation level in combination with good color build-up dark shades can be matched with lower dye concentrations of BEZAKTIV ONE than with conventional bifunctional reactive dyes. The addition of the auxiliary COTOBLANC SEL in the second soap bath has an additional positive effect, so that a washing process with low water and energy consumption generates excellent wet fastness properties on the textile.

13.09.2022

New technology purifies wastewater from textile dyeing by using graphene

The substance graphene can become increasingly important as a component in textile catalysts when purifying water from textile dyeing as has been shown in a recently completed doctoral project at the University of Borås.

In his project, Milad Asadi, a new doctor in Textile Technology, has modified conventional yarn by encapsulating iron particles in graphene and developed a multifunctional smart e-textile. The focus was on developing a method for purifying wastewater from textile dyeing. The smart e-textile acts as a catalyst that causes the substance hydrogen peroxide to be formed, which is needed in order to break down pollutants in wastewater.

The project has generated a complete textile reactor for the treatment of wastewater through the so-called electro-Fenton technology, which is mainly used industrially to purify wastewater. The novelty of the technology is to use the properties of both graphene and iron, which is the main catalyst.

The substance graphene can become increasingly important as a component in textile catalysts when purifying water from textile dyeing as has been shown in a recently completed doctoral project at the University of Borås.

In his project, Milad Asadi, a new doctor in Textile Technology, has modified conventional yarn by encapsulating iron particles in graphene and developed a multifunctional smart e-textile. The focus was on developing a method for purifying wastewater from textile dyeing. The smart e-textile acts as a catalyst that causes the substance hydrogen peroxide to be formed, which is needed in order to break down pollutants in wastewater.

The project has generated a complete textile reactor for the treatment of wastewater through the so-called electro-Fenton technology, which is mainly used industrially to purify wastewater. The novelty of the technology is to use the properties of both graphene and iron, which is the main catalyst.

“Previous research has mainly been about the treatment of wastewater by using chemicals to break down the textile dyes. My project is the first where graphene, which is electrically conductive, is used to encapsulate iron. The e-textile can also be used several times, unlike when chemicals are used and which are then rinsed off. The challenge in the project was to scale up the technology so that the treated yarn can be fed into automatic knitting machines”, explained Milad Asadi.

The e-textile catalyst can be reused and hydrogen peroxide is formed internally inside the reactor, which reduces the use of biological catalysts, making the technology more sustainable compared to chemical methods.

Source:

University of Borås - The Swedish School of Textiles

26.08.2022

EURATEX: Future of the European textile & clothing industry is at stake

  • European Textile Industry calls for immediate action to tackle the energy crisis;

The European textile & fashion in Europe, represented by EURATEX, calls for a single European strategy to tackle this energy crisis. To safeguard the future of the industry, a revision of the electricity price mechanism is necessary and an EU wide cap on gas prices at 80€/MWh. Special company support needs to be granted to avoid bankruptcy and relocation of textile production outside Europe.

Gas and electricity prices have reached unprecedented levels in Europe. Due to severe global competition in the market that characterizes the European textile & clothing industry, these cost increases are impossible to pass on to customers. This has already led to capacity reductions and production stops. Closures and the shift of production outside Europe are being forecasted should the current situation persist, leading to further de-industrialization of our continent and increased dependency on external suppliers.

  • European Textile Industry calls for immediate action to tackle the energy crisis;

The European textile & fashion in Europe, represented by EURATEX, calls for a single European strategy to tackle this energy crisis. To safeguard the future of the industry, a revision of the electricity price mechanism is necessary and an EU wide cap on gas prices at 80€/MWh. Special company support needs to be granted to avoid bankruptcy and relocation of textile production outside Europe.

Gas and electricity prices have reached unprecedented levels in Europe. Due to severe global competition in the market that characterizes the European textile & clothing industry, these cost increases are impossible to pass on to customers. This has already led to capacity reductions and production stops. Closures and the shift of production outside Europe are being forecasted should the current situation persist, leading to further de-industrialization of our continent and increased dependency on external suppliers.

Specific segments of the textile industry are particularly vulnerable. The man-made fibres (MMF), synthetic and cellulose-based fibres, industry for instance is an energy intensive sector and a major consumer of natural gas in the manufacturing of its fibres. The disappearance of European fibre products would have immediate consequences for the textile industry and for society at large. The activities of textile dyeing and finishing are also relatively intensive in energy. These activities are essential in the textile value chain in order to give the textile products and garments added value through colour and special functionalities (e.g. for medical applications).

The European textile industry calls for an EU-wide cap on gas prices at €80/Mwh, and a revision of the price mechanism for the electricity market, to reduce the huge price gaps with our foreign competitors.

Governments should ensure that critical industries, such textiles and all its segments, are able to ensure gas and electricity contracts towards the end of the year at an affordable price. Stable and predictable energy supply is of the utmost importance. Gas restrictions and rationing must only be used as a last resort. No mandatory consumption cuts should be foreseen.

In addition to these measures under discussion, currently a proliferation of contradictory, uncoordinated national initiatives to tackle the energy crisis is observed. This has led to a de facto fragmentation of the Single Market, resulting in a chaotic policy and regulatory environment that adds a further strain on our supply chain, which is fully integrated at European level. Measures that guarantee a level playing field in the EU are utmost important.

EURATEX President Alberto Paccanelli explained: “Given the current situation, a scenario where entire segments of the textiles industry will disappear can no longer be excluded. This would lead to the loss of thousands of companies and tens of thousands of European jobs and would further aggravate the dependency of Europe to foreign sources of essential goods. This applies specifically to SMEs who need temporary support measures (e.g. state aids, tax relieves, energy price cap) to survive the current crisis and to prepare for the green transition in the longer run.”

More information:
Euratex energy supplies crisis
Source:

Euratex

09.11.2021

Alchemie Technology asks fashion industry to reduce emissions

Alchemie Technology, an innovator of low energy, waterless, textile dyeing and finishing technology, is calling on COP26 leaders to support the global fashion industry in the adoption of new manufacturing technology, which will dramatically reduce carbon emissions and fashion’s impact on climate change.

While the fashion industry is one of the most polluting on the planet, second only to oil and gas, and greenhouse gas emissions from textile dyeing at around 3% of global emissions outweigh that of all international flights and maritime shipping combined, it is an industry that can also reduce CO2 emissions the fastest, just by changing the way it dyes fabrics.  

Alchemie Technology, an innovator of low energy, waterless, textile dyeing and finishing technology, is calling on COP26 leaders to support the global fashion industry in the adoption of new manufacturing technology, which will dramatically reduce carbon emissions and fashion’s impact on climate change.

While the fashion industry is one of the most polluting on the planet, second only to oil and gas, and greenhouse gas emissions from textile dyeing at around 3% of global emissions outweigh that of all international flights and maritime shipping combined, it is an industry that can also reduce CO2 emissions the fastest, just by changing the way it dyes fabrics.  

Fabric dyeing is the most polluting part of fashion and activewear manufacturing, involving industrial scale dye baths and huge amounts of dye chemicals, steam, electrical power, and consequent high CO2 emissions.  Repeated washing of the dyed fabric, required to remove dye residue, is responsible for 20% of the world’s wastewater pollution and excess dye is discharged into waterways, affecting the health of some of the world’s poorest communities. In more regulated areas, water pollution is reduced through reliance on energy intensive water treatment plants.

However, an environmental step change can be achieved by adopting new digital technology that can dye fabrics with an 85% reduction in energy consumption and a dramatic 95% reduction of the 1.3 trillion litres of water currently used by the industry each year.

For example, dyeing one polyester shirt using current methods generates 4.5 litres of wastewater and produces 0.17 Kg of CO2, compared to low energy digital technology, which uses less than 0.2 litres of water and reduces carbon emissions to 0.03 Kg.  Multiply these numbers by the billions of garments dyed each year and the scale of the environmental problem, if nothing changes, is clear to see. Equally, the amount by which the textile industry can improve its carbon footprint is dramatic and can be done quickly if action is taken now.

Source:

Alchemie Technology Ltd

(c) Alchemie Technology
03.11.2021

COPS26: Governments support critical to help fashion industry reduce emissions the fastest

  • Alchemie Technology asks world leaders to cut energy and CO2 emissions from global fashion industry

Alchemie Technology, innovator of low energy, waterless, textile dyeing and finishing technology, is calling on COP26 leaders to support the global fashion industry in the adoption of new manufacturing technology, which will dramatically reduce carbon emissions and fashion’s impact on climate change.

While the fashion industry is one of the most polluting on the planet, second only to oil and gas, and greenhouse gas emissions from textile dyeing at around 3% of global emissions outweigh that of all international flights and maritime shipping combined, it is an industry that can also reduce CO2 emissions the fastest, just by changing the way it dyes fabrics.  

  • Alchemie Technology asks world leaders to cut energy and CO2 emissions from global fashion industry

Alchemie Technology, innovator of low energy, waterless, textile dyeing and finishing technology, is calling on COP26 leaders to support the global fashion industry in the adoption of new manufacturing technology, which will dramatically reduce carbon emissions and fashion’s impact on climate change.

While the fashion industry is one of the most polluting on the planet, second only to oil and gas, and greenhouse gas emissions from textile dyeing at around 3% of global emissions outweigh that of all international flights and maritime shipping combined, it is an industry that can also reduce CO2 emissions the fastest, just by changing the way it dyes fabrics.  

Fabric dyeing is the most polluting part of fashion and activewear manufacturing, involving industrial scale dye baths and huge amounts of dye chemicals, steam, electrical power, and consequent high CO2 emissions.  Repeated washing of the dyed fabric, required to remove dye residue, is responsible for 20% of the world’s wastewater pollution and excess dye is discharged into waterways, affecting the health of some of the world’s poorest communities. In more regulated areas, water pollution is reduced through reliance on energy intensive water treatment plants.

However, an environmental step change can be achieved by adopting new digital technology that can dye fabrics with an 85% reduction in energy consumption and a dramatic 95% reduction of the 1.3 trillion litres of water currently used by the industry each year.

For example, dyeing one polyester shirt using current methods generates 4.5 litres of wastewater and produces 0.17 Kg of CO2, compared to low energy digital technology, which uses less than 0.2 litres of water and reduces carbon emissions to 0.03 Kg.  Multiply these numbers by the billions of garments dyed each year and the scale of the environmental problem, if nothing changes, is clear to see.  Equally, the amount by which the textile industry can improve its carbon footprint is dramatic and can be done quickly if action is taken now.
Dr Simon Kew, Managing Director, Alchemie Technology comments “The technology now exists to enable the textile industry to make a significant contribution to helping meet the world’s net zero, climate change goals. But it requires the support of governments through investment, grants and legislation and the critical effort of brands, and their manufacturing supply chains to work together to make the change.”

Source:

Alchemie Technology