Textination Newsline

Interview on the trade fair landscape for floor coverings in Germany

The effects of the Corona pandemic were felt in almost all areas of social and economic life. The trade fair industry in particular was severely affected, with many events cancelled or postponed. With the return to normality, the question arises as to what significance leading trade fairs will have in the post-Corona era and how the competition between different organisers will develop. For its KLARTEXT interview series, Textination talked to Ms Sonia Wedell-Castellano, Global Director of DOMOTEX Events.

 

After DOMOTEX was unable to take place in 2021 and 2022 due to the pandemic, the trade fair returned in 2023 with a successful event. Nevertheless, the number of exhibitors has almost halved compared to 2020. How do you assess the future importance of leading trade fairs after the industry had to come to terms with online meetings and travel restrictions for a long period of time?

I think it is important to remember that this was the first DOMOTEX since the outbreak of the pandemic, and at a time when the global economic situation is rather difficult. Of course, this situation has made some companies reluctant to participate in DOMOTEX 2023, so we have not yet been able to welcome all companies back as exhibitors at the show. In addition, there were still significant travel restrictions in place at the beginning of the year, for example in China, which simply made it more difficult for our exhibitors to participate in a trade fair abroad. As far as our expectations for the next event are concerned, I can say that many companies - even those that did not exhibit this year - have communicated their interest in wanting to be back at DOMOTEX 2024.
 
We are certain that leading trade fairs and exhibitions in general will continue to be of great importance in the future! You may be able to cultivate existing customers at digital events, but you can't generate new ones. The focus of DOMOTEX is on products you can touch, on the haptic experience on site. You can't transfer that to the digital world. Even the chance encounters at the stand or in the halls do not happen digitally. But a trade fair thrives on personal encounters, personal exchanges. Business is done between people, not between screens. Both exhibitors and visitors have told us quite clearly that they want and need DOMOTEX to be a trade fair where people are present.

 

The degree of internationalisation among DOMOTEX visitors was between 62 and 67 percent in the last three years of the event before the pandemic; in 2023 it even reached 69 percent. Would you agree that leading international trade fairs in Germany are now primarily only important for export-oriented companies? And what does that imply for the economic efficiency of trade fairs?

Certainly, leading international trade fairs in Germany are particularly interesting for export-oriented companies, but not exclusively. That doesn't change anything at all about the profitability of trade fairs. We generate our turnover with all our exhibitors, regardless of whether they are export-oriented or only interested in the Germany-Austria-Switzerland region. That's why satisfied exhibitors are very important to us. And an exhibitor is satisfied when he can do good business or make good contacts at our fairs. It's more and more about the right quality of visitors, less about the quantity. In any case, all our exhibitors very much welcome international visitors!

 

For the 2024 edition, Deutsche Messe has announced that its DOMOTEX concept has been changed to focus on different areas each year: Carpet & Rugs in the odd-numbered years and Flooring in the even-numbered years. Flooring covers wood and laminate flooring, parquet, design flooring, resilient floor coverings, carpets, outdoor flooring and application and installation technology. Carpet & Rugs stands for hand-made carpets and runners as well as for machine-woven carpets.

Yet you say that the Carpet & Rugs segment in particular needs an annual presentation platform, while the flooring segment would like to see DOMOTEX every two years as the central platform for the industry due to longer innovation cycles. Doesn't that actually mean that floor coverings are only in Hannover every other year, but carpets continue to exhibit annually in Hannover? Could you clarify that?

DOMOTEX - Home of Flooring will take place in 2024 and in all even years: This is a DOMOTEX with all exhibitors as we know them from the past. So, from herringbone parquet to outdoor coverings, oriental carpets and contemporary designs - everything, under one roof. In the odd years, i.e. from 2025, there will then be DOMOTEX - Home of Carpets and Rugs, with a focus on suppliers of fitted carpets. The background to this is that the hard flooring industry had wanted DOMOTEX to be held every two years. After this year's DOMOTEX, the suppliers of wall-to-wall carpets have again clearly spoken out in favour of an annual platform. With our new focus model, we are meeting the needs that the market has expressed to us.

 

Messe Frankfurt has declared a new product segment for next year's Heimtextil - interestingly, under the name Carpets & Rugs. While the watchword at DOMOTEX in the even year 2024 is Flooring, Heimtextil offers an alternative trade fair venue for carpets. How do you assess this situation - do exhibitors now have to choose between Hannover and Frankfurt and what does this mean for the split concept?

No, exhibitors from the carpet sector will not have to choose between Hannover and Frankfurt in future - because DOMOTEX is and will remain the home of the entire industry, even in the even years! At DOMOTEX, Home of Flooring means, as I explained earlier, that we present the entire spectrum of floor coverings and carpets. But what is even more important is that we have been told by exhibitors and many visitors that the market does not want to be split up any further. Through the many (small) events, the flooring industry is only competing with itself. To put it bluntly: if only some of the exhibitors take part in ten events, it can't really work. The critical mass is missing. A trade fair is only as good as its participants and they often don't have the time to visit several events.    

 

Another innovation for DOMOTEX is the country focus. What do you expect from this and why did you choose "Insight Italy" for 2024?

With our new special presentation, we want to arouse the curiosity of our visitors - especially retailers, architects and contractors - and highlight the international character of DOMOTEX. After all, what could be more exciting than getting to know a country in depth?  

That is why the INSIGHT concept will in future feature a different country at each DOMOTEX - Home of Flooring. Special exhibition areas will showcase innovations and products, present partnerships with designers and universities, and stage trends. In addition, the conference will provide insights into the respective market and references.  
In 2024, we will start with Italy, a very design-savvy and creative country from which many trends come.

 

Deutsche Messe wants to strengthen the Hannover venue for the leading trade fair DOMOTEX and to hold additional fairs only in Shanghai and in Gaziantep. There will be no Carpet Expo in Istanbul. What influence does the changing entrepreneurial landscape in terms of production countries and markets have on your international concept?

First of all, it must be noted that the business landscape for carpets has not changed in Turkey. Here, only the associations have decided to organise a carpet fair in Istanbul in the future. The background is the continuing visa problem for Turkish exhibitors in Germany as well as the immensely high inflation in Turkey, which makes foreign participation extremely costly for Turkish companies. We would have liked to organise a carpet fair in Istanbul together with the Turkish associations, but not at any price and not on their terms alone. Hannover is and will remain the international platform for DOMOTEX, and we will continue to strengthen this location.

But of course, we also keep an eye on the global market and keep our eyes and ears open at all times, for all our brands, by the way. It was only in this way that DOMOTEX asia/Chinafloor in Shanghai was able to develop into what is now a very successful event. The potential was there, we were in the right place at the right time. If we hadn't seized the opportunity at the time, there would still be a strong floor coverings trade fair in Shanghai - but it would be run by one of our competitors and it wouldn't be called DOMOTEX today.

Many thanks to Ms Sonia Wedell-Castellano for the KLARTEXT.

Harmful PFAS chemicals can now be detected in many soils and bodies of water. Removing them using conventional filter techniques is costly and almost infeasible. Researchers at the Fraunhofer Institute for Interfacial Engineering and Biotechnology IGB are now successfully implementing a plasma-based technology in the AtWaPlas joint research project. Contaminated water is fed into a combined glass and stainless steel cylinder where it is then treated with ionized gas, i.e. plasma. This reduces the PFAS molecular chains, allowing the toxic substance to be removed at a low cost.

Per- and polyfluoroalkyl substances (PFAS) have many special properties. As they are thermally and chemically stable as well as resistant to water, grease and dirt, they can be found in a large number of everyday products: Pizza boxes and baking paper are coated with them, for example, and shampoos and creams also contain PFAS. In industry they serve as extinguishing and wetting agents, and in agriculture they are used in plant protection products. However, traces of PFAS are now also being detected where they should not be found: in soil, rivers and groundwater, in food and in drinking water. This is how the harmful substances end up in the human body. Due to their chemical stability, eliminating these so-called “forever chemicals” has been almost impossible up to now without considerable effort and expense.

The AtWaPlas joint research project aims to change that. The acronym stands for Atmospheric Water Plasma Treatment. The innovative project is currently being run at the Fraunhofer Institute for Interfacial Engineering and Biotechnology IGB in Stuttgart in cooperation with the industrial partner HYDR.O. Geologen und Ingenieure GbR from Aachen. The aim is to treat and recover PFAS-contaminated water using plasma treatment.

The research team led by Dr. Georg Umlauf, an expert in functional surfaces and materials, utilizes plasma’s ability to attack the molecular chains of substances. The electrically conductive gas consisting of electrons and ions is generated when high voltage is applied. “Our experiments with plasma have been successful in shortening the PFAS molecule chains in water. This is a significant step towards efficiently removing these stubborn pollutants,” Umlauf is happy to report.

Water cycle in a stainless steel cylinder
Fraunhofer researchers are using a cylindrical construction for this plasma process. Inside is a stainless steel tube, which serves as the ground electrode of the electrical circuit. The outer copper mesh then acts as a high-voltage electrode and is protected on the inside by a glass dielectric. A very small gap is left between the two, which is filled with an air mixture. This air mixture is converted into plasma when a voltage of several kilovolts is applied. It is visible to the human eye by its characteristic glow and discharge as flashes of light.

During the purification process, the PFAS-contaminated water is introduced at the bottom of the stainless steel tank and pumped upwards. It then travels down through the gap between the electrodes, passing through the electrically active plasma atmosphere. The plasma breaks up and shortens the PFAS molecule chains as it discharges. The water is repeatedly pumped through both the steel reactor and the plasma discharge zone in a closed circuit, reducing the PFAS molecule chains further each time until they are completely mineralized. “Ideally, the harmful PFAS substances are eliminated to the point that they can no longer be detected in mass spectrometric measurements. This also complies with the strict German Drinking Water Ordinance (TrinkwV) regulations regarding PFAS concentrations,” says Umlauf.

The technology developed at the Fraunhofer Institute has a key advantage over conventional methods such as active carbon filtering: “Active carbon filters can bind the harmful substances, but they are unable to eliminate them. This means that the filters must be replaced and disposed of regularly. The AtWaPlas technology, on the other hand, is capable of completely eliminating the harmful substances without any residue and is very efficient and low-maintenance,” explains Fraunhofer expert Umlauf.

Real water samples instead of synthetic laboratory samples
In order to ensure true feasibility, the Fraunhofer researchers are testing the plasma purification under more challenging conditions. Conventional test methods involve using perfectly clean water and PFAS solutions that have been synthetically mixed in the laboratory. However, the research team in Stuttgart is using “real” water samples that come from PFAS-contaminated areas. The samples are collected by the project partner HYDR.O. Geologen und Ingenieure GbR from Aachen. The company specializes in cleaning up contaminated sites and also carries out hydrodynamic simulations.

The real water samples that Umlauf and his team work with therefore contain PFAS as well as other particles, suspended solids and organic turbidity. “This is how we verify the purification efficiency of AtWaPlas, not only using synthetic laboratory samples, but also under real conditions with changing water qualities. The process parameters can be adapted and further developed at the same time,” explains Umlauf.

This plasma method can also be used to break down other harmful substances, including pharmaceutical residues in wastewater, pesticides and herbicides, but also industrial chemicals such as cyanides. AtWaPlas can also be used to treat drinking water in mobile applications in an environmentally friendly and cost-effective way.

The AtWaPlas joint research project launched in JuIy 2021. After a successful series of pilot-scale tests with a 5 liter reactor, the Fraunhofer team is now working with the joint research partner to further optimize the process. Georg Umlauf states: “Our current objective is to completely eliminate toxic PFAS by extending process times and increasing the number of circulations in the tank. We also want to make the AtWaPlas technology available for practical application on a larger scale.” The future could see corresponding plants set up as standalone purification stages in sewage treatment plants or used in portable containers on contaminated open-air sites.

Fraunhofer researchers have succeeded in using the bioresorbable silica gel Renacer® to produce an electrospun membrane that is neither cytotoxic to cells nor genotoxic. This model mimics fibrous structures found in connective tissue and is therefore particularly suitable for regenerative applications, such as for improved wound healing.
 
The treatment of large as well as internal wounds is challenging and can be a very lengthy process. Researchers at the Fraunhofer Institute for Silicate Research ISC and the Fraunhofer Institute for Toxicology and Experimental Medicine ITEM have developed a bioresorbable membrane for this use. This membrane supports wound healing and biodegrades completely in the body to a natural substance.

The basis for the novel membrane is a fiber fleece developed at Fraunhofer ISC. This fleece has already been approved as a medical device to support the regeneration of chronic wounds, such as the diabetic foot. During the healing process, the material dissolves completely within six to eight weeks. Using the electrospinning method, the researchers have now managed to reduce the 50-micrometer fiber diameter by a factor of more than 50, resulting in fibers with diameters of less than one micrometer (µm). This made it possible to spin a silica gel sol into an open-meshed silica gel membrane consisting of fibers with a diameter of about one µm. In some cases, the diameters achieved were as small as 100 nanometers. “These fiber systems imitate the extracellular matrix, the fiber structures found in connective tissue, in the body and are very well tolerated by human cells for tissue regeneration. They cause no foreign body reactions and no internal scarring. The innovative silica gel membrane releases only one degradation product, ortho-silicic acid. This has a regenerative effect on the tissue and promotes the closing of wounds,” explains Dr. Bastian Christ, a scientist at the Fraunhofer ISC in Würzburg. Together with his colleagues, he was in charge of the synthesis and processing of the material.
 
“While the original fiber fleece of 50 µm thick fibers is inserted into a chronic wound from the outside, the thinner fiber fleece is also suitable for internal use. Theoretically, it could be placed onto the filler material used for bone defects in the jaw to accelerate wound healing,” is how Dr. Christina Ziemann, research scientist at Fraunhofer ITEM responsible for the biological evaluation of the material, describes one of numerous possible applications. “In principle, the membrane can be glued in the body with biodegradable adhesives.

Material is neither cyto- nor genotoxic
Using a confocal microscope, a special light microscope, it was possible to show that the small-meshed membrane, which serves as a demonstrator, exhibits a barrier function. This prevents the passage of connective tissue cells for a period of at least seven days without interfering with cell proliferation. In addition, the membrane is resorbable, is not cyto- or genotoxic and thus causes no direct damage to tissue or DNA.

Fiber diameter and mesh size influence the behavior of the cells
A thin fiber diameter of 100 nanometers with thin meshes was chosen for use as an adhesion barrier to prevent postoperative adhesions and scarring. With this configuration, only nutrients could pass through the fiber fleece, but connective tissue cells could not. With a fiber diameter of one micrometer and correspondingly wider meshes, on the other hand, the cells grow into the fiber mesh, proliferate there and have a regenerating effect on the surrounding tissue. “By adjusting the material properties, such as fiber diameter and mesh size, it is possible to influence the behavior of the cells as desired,” says Christ. The equipment required for spinning the fibers is designed at Fraunhofer ISC to meet application and specific customer requirements. The shape and size of the fiber fleeces can also be adjusted to customer specifications.

Wounds only heal quickly and effectively if the wounded tissue is sufficiently supplied with nutrients. At the same time, metabolic products have to be removed. In contrast to many products on the market that allow nutrient transport only after biodegradation has started, the open-meshed Renacer® membrane promotes this transport directly after implantation, while not allowing cell passage.

Membrane with an inorganic character
There is another advantage: The Renacer® membrane dissolves completely into almost pH neutral non-toxic ortho-silicic acid, the only water-soluble form of silica. It is physiologically present in the body and has been shown to stimulate connective skin tissue formation and bone formation. Products currently available do not exhibit such bioactive properties. Many biodegradable materials dissolve into organic acids, such as lactic acid or glycolic acid. This can cause local acidification in the tissue, which then triggers inflammatory reactions of the immune system. “Our tests have shown that the dissolution product, ortho-silicic acid, is also non-toxic and completely biocompatible with cells,” says Ziemann. “The membrane decomposes into a single molecule – ortho-silicic acid.”

Fibers as a depot for active substances
Furthermore, drugs can be encapsulated into the matrix of the silica gel fibers, to be released during material resorption. “For example, antibiotics could be delivered into a wound after applying a drug-loaded Renacer® membrane to prevent the formation of bacterial colonies,” elaborates Christ. At Fraunhofer ISC, the BMBF-funded GlioGel project is testing whether the Renacer® material platform can be used as a depot for active substances in the treatment of brain tumors.

Textile-reinforced concrete components with a sustainable natural-fiber reinforcement possess sufficient bond and tensile load-bearing behavior for the utilization in construction. This has been verified by researchers at the Fraunhofer WKI in collaboration with Biberach University of Applied Sciences and the industrial partner FABRINO. In the future, textile-reinforced components with natural-fiber reinforcement could therefore replace conventionally reinforced concrete components and improve the environmental balance in the construction industry.

Non-metallic reinforcements for concrete elements are currently often made from various synthetically produced fibers - for example from glass or carbon fibers. An ecological alternative to synthetic fibers is provided by flax or other natural fibers. These are widely available and are more sustainable, due, amongst other things, to their renewable raw-material basis, the advantages regarding recycling, and the lower energy requirements during production. This is where the researchers from the Fraunhofer WKI and Biberach University of Applied Sciences, in collaboration with an industrial partner, became active. Their goal was to demonstrate that reinforcements made from textile fibers are just as suitable for utilization in construction as synthetic fibers.

"At the Fraunhofer WKI, we have produced leno fabrics from flax-fiber yarn using a weaving machine. In order to enhance sustainability, we tested a treatment of the flax yarns for improving the tensile strength, durability and adhesion which is ecologically advantageous compared to petro-based treatments," explained Jana Winkelmann, Project Manager at the Fraunhofer WKI. In the coating process, a commonly used petro-based epoxy resin was successfully replaced by a partially bio-based impregnation. A large proportion (56%) of the molecular structure of the utilized epoxy resin consists of hydrocarbons of plant origin and can therefore improve the CO₂ balance.

Textile reinforcements have a number of fundamental advantages. They exhibit, for example, significantly reduced corrodibility at the same or higher tensile strength than steel, with the result that the necessary nominal dimension of the concrete covering can be reduced. This often allows smaller cross-sections to be required for the same load-bearing capacity. Up to now, however, the load-bearing behavior of textile reinforcements made from natural fibers in concrete components has not been systematically investigated.

At Biberach University of Applied Sciences, researchers tested the bond and tensile load-bearing behavior as well as the uniaxial flexural load-bearing behavior of concrete components with textile reinforcement made from flax fibers. The scientists came to the conclusion that the natural-fiber-based textile-reinforced components with a bio-based impregnation are fundamentally suitable. The suitability was demonstrated by both a significant increase in the breaking load compared to non-reinforced and under-reinforced concrete components and in finely distributed crack patterns. The curves of the stress-strain diagrams could be divided into three ranges typical for reinforced expansion elements (State I - non-cracked, State IIa - initial cracking, and State IIb - final crack pattern). The delineation of the ranges becomes more pronounced as the degree of reinforcement increases.

As a whole, regionally or Europe-wide available, renewable natural fibers and a partially bio-based coating contribute towards an improvement of the CO₂ footprint of the construction industry. As a result, a further opportunity is being opened up for the energy- and raw-material-intensive construction industry in terms of meeting increasingly stringent environmental and sustainability requirements. "Textile-reinforced concretes enable lighter and more slender structures and therefore offer architectural leeway. We would like to continue our research into the numerous application possibilities of natural-fiber-reinforced concretes," said Christina Haxter, a staff member at the Fraunhofer WKI.

The project, which ran from 9th December 2020 to 31st December 2022, was funded by the German Federal Environmental Foundation (DBU).   

• For sports and physiotherapy alike

Researchers at ETH Zurich, Empa and EPFL are developing a 3D-printed insole with integrated sensors that allows the pressure of the sole to be measured in the shoe and thus during any activity. This helps athletes or patients to determine performance and therapy progress.

In elite sports, fractions of a second sometimes make the difference between victory and defeat. To optimize their performance, athletes use custom-made insoles. But people with musculoskeletal pain also turn to insoles to combat their discomfort.

Before specialists can accurately fit such insoles, they must first create a pressure profile of the feet. To this end, athletes or patients have to walk barefoot over pressure-sensitive mats, where they leave their individual footprints. Based on this pressure profile, orthopaedists then create customised insoles by hand. The problem with this approach is that optimisations and adjustments take time. Another disadvantage is that the pressure-sensitive mats allow measurements only in a confined space, but not during workouts or outdoor activities.

Now an invention by a research team from ETH Zurich, Empa and EPFL could greatly improve things. The researchers used 3D printing to produce a customised insole with integrated pressure sensors that can measure the pressure on the sole of the foot directly in the shoe during various activities.

“You can tell from the pressure patterns detected whether someone is walking, running, climbing stairs, or even carrying a heavy load on their back – in which case the pressure shifts more to the heel,” explains co-project leader Gilberto Siqueira, Senior Assistant at Empa and at ETH Complex Materials Laboratory. This makes tedious mat tests a thing of the past. The invention was recently featured in the journal Scientific Reports.

One device, multiple inks
These insoles aren’t just easy to use, they’re also easy to make. They are produced in just one step – including the integrated sensors and conductors – using a single 3D printer, called an extruder.

For printing, the researchers use various inks developed specifically for this application. As the basis for the insole, the materials scientists use a mixture of silicone and cellulose nanoparticles.
Next, they print the conductors on this first layer using a conductive ink containing silver. They then print the sensors on the conductors in individual places using ink that contains carbon black. The sensors aren’t distributed at random: they are placed exactly where the foot sole pressure is greatest. To protect the sensors and conductors, the researchers coat them with another layer of silicone.

An initial difficulty was to achieve good adhesion between the different material layers. The researchers resolved this by treating the surface of the silicone layers with hot plasma.
As sensors for measuring normal and shear forces, they use piezo components, which convert mechanical pressure into electrical signals. In addition, the researchers have built an interface into the sole for reading out the generated data.

Running data soon to be read out wirelessly
Tests showed the researchers that the additively manufactured insole works well. “So with data analysis, we can actually identify different activities based on which sensors responded and how strong that response was,” Siqueira says.

At the moment, Siqueira and his colleagues still need a cable connection to read out the data; to this end, they have installed a contact on the side of the insole. One of the next development steps, he says, will be to create a wireless connection. “However, reading out the data hasn’t been the main focus of our work so far.”

In the future, 3D-printed insoles with integrated sensors could be used by athletes or in physiotherapy, for example to measure training or therapy progress. Based on such measurement data, training plans can then be adjusted and permanent shoe insoles with different hard and soft zones can be produced using 3D printing.

Although Siqueira believes there is strong market potential for their product, especially in elite sports, his team hasn’t yet taken any steps towards commercialisation.

Researchers from Empa, ETH Zurich and EPFL were involved in the development of the insole. EPFL researcher Danick Briand coordinated the project, and his group supplied the sensors, while the ETH and Empa researchers developed the inks and the printing platform. Also involved in the project were the Lausanne University Hospital (CHUV) and orthopaedics company Numo. The project was funded by the ETH Domain’s Advanced Manufacturing Strategic Focus Areas programme.

• General economic developments are dampening mood in composites industry
• Future expectations are optimistic
• Investment climate has remained stable
• Varying expectations for application industries
• Growth drivers have remained unchanged
• Composites Index is pointing in different directions

This is the 20th time that Composites Germany has identified the latest performance indicators for the fibre-reinforced plastics market. The survey covered all the member companies of the umbrella organisations of Composites Germany: AVK and Composites United, as well as the associated partner VDMA.  

General economic developments are dampening mood in composite industry
Like all industries, the composite industry has been affected by strong negative forces in recent years. The main challenges over the last few years have been the Covid pandemic, a shortage of semiconductors, supply chain problems and a sharp rise in the price of raw materials. Furthermore, there have been numerous isolated effects that added to the pressure on the industry.

The main challenges during the past year were primarily a steep increase in energy and fuel prices and the cost of logistics. In addition, the war in Ukraine put a further strain on supply chains that had already been weakened.

Overall, the stock market prices for both electricity and petroleum products are currently showing a clear downward trend. However, the significantly lower prices have not yet percolated from manufacturers and buyers to the end customer.

The aforementioned effects have further dampened the mood in the composites industry. The index assessing the current general business situation in Germany and Europe has dropped even further than before. However, the assessment of the global situation is somewhat more positive.

Despite this generally negative assessment of the current situation, companies are moving in a somewhat more positive direction in the assessment of their own business situations. The companies that were surveyed rated their own positions more positively than in the last survey.

Future expectations are optimistic
The expectations on future market developments are showing a very positive picture. After a significant drop in the last survey, the indicators for the general business situation are now displaying a clear upward trend again. Moreover, respondents were far more optimistic about their own companies’ future prospects.

Investment climate remaining stable
The investment climate has remained at a stable level. Nearly half of the companies surveyed are planning to employ new staff over the next six months. As before, about 70% of respondents are either considering or planning machine investments. Unlike in the previous survey, this value has remained almost unchanged.

Varying expectations for application industries
The composites market is highly heterogeneous in terms of both materials and applications. In the survey, respondents were asked to assess the market developments of different core areas. Expectations turned out to be extremely diverse.

The most important application segment for composites is the transport sector. The number of new registrations of passenger cars has been declining in recent years. This is where we can see OEMs moving away from volume models and opting for more profitable mid-range and premium segments. In this year’s survey, this shows itself in relatively cautious expectations for this segment.

The currently rather pessimistic outlook for the construction industry is leading companies to expect major slumps in this sector, in particular. The building sector, in particular, often reacts rather slowly to short-term economic fluctuations and has long been relatively robust towards the aforementioned crises. Now, however, it seems that this area, too, is being affected by negative influences.

The pessimistic outlook on the sports and leisure sector can be explained by a rather pessimistic view of consumer behaviour.

Expectations about future market developments, on the other hand, are significantly more positive than the figures presented here might suggest.

Growth drivers still stable
As before, the current survey shows Germany, Europe and Asia as the global regions expected to deliver the most important growth stimuli for the composites segment, with Europe playing a key role for many of the respondents.

Where materials are concerned, we are seeing a continuation of the ongoing paradigm shift. Whereas, in the first 13 surveys, respondents always believed that the composites segment would receive its prevailing growth stimuli from CRP, there is now an almost universal expectation that the most important stimuli will be coming from GRP or from all the materials.

Composites Index points in different directions
Despite the many negative influences that have occurred recently, composites appear to be in good shape for the future. Thanks to excellent market developments in 2021, they have almost reached their pre-pandemic level. The outlook for market developments in 2022 have not been finalised but are showing a less positive trend for last year.

Nevertheless, there are many indications to suggest that the generally positive development of the composite industry over the last few years is set to continue. In the medium term, structural changes in the transport sector will open up opportunities for composites to gain a new foothold in new applications. Major opportunities can be seen in areas of construction and infrastructure. Despite the rather weak market situation, these areas offer enormous opportunities for composites, due to their unique properties which predestine them for long-term use. The main assets of these materials are their durability, their almost maintenance-free use, their potential for use in lightweight construction and their positive impact on sustainability. Furthermore, one major growth driver is likely to be the wind industry, provided that it meets the politically self-imposed targets for the share of renewable energies in power consumption.

Overall, the Composites Index shows a restrained assessment of the current situation, whereas the assessment of the future situation is clearly positive. Respondents are apparently optimistic about the future, reflecting the assessment mentioned above: Composites have been used in industry and in serial production for several decades and, despite numerous challenges, they are set to provide immense potential for exploring new areas of application.

The next Composites Market Survey will be published in July 2023.

"Shared vision of a true circular economy for the textile industry"

US fashion group PVH has joined the fibre-to-fibre consortium founded by Carbios, On, Patagonia, PUMA and Salomon. The aim is to support the further development of Carbios' biorecycling process on an industrial scale, setting new global standards for textile recycling technologies. PVH owns brands such as Calvin Klein and Tommy Hilfiger. In the agreement signed by PVH Corp, the company commits to accelerating the textile industry's transition to a circular economy through its participation in the consortium.

Carbios is working with On, Patagonia, PUMA, PVH Corp. and Salomon to test and improve its bio-recycling technology on their products. The aim is to demonstrate that this process closes the fibre-to-fibre loop on an industrial scale, in line with sustainability commitments.

The two-year cooperation project will not only enable the biological recycling of polyester articles on an industrial scale, but also develop thorough sorting and disassembly technologies for complex textile waste. Existing members voted unanimously for PVH Corp. to join the consortium, saying the common goal is to support the development of viable solutions that address the fashion industry's contribution to climate change..

Carbios has developed a technology using highly selective enzymes that can recycle mixed feedstocks, reducing the laborious sorting required by current thermomechanical recycling processes. For textiles made from blended fibres, the patented enzyme acts only on the PET polyester contained within. This innovative process produces recycled PET (r-PET) that is equivalent in quality to virgin PET and can be used to produce new textile fibres.

Textile waste treatment and recycling
Globally, only 13% of textile waste is currently recycled, mainly for low-value applications such as upholstery, insulation or rags. The remaining 87% is destined for landfill or incineration. To work on improving textile recycling technologies, consortium members will supply feedstock in the form of clothing, underwear, footwear and sportswear. In 2023, a new PET textile waste facility will be commissioned at the Carbios demonstration plant, notably as part of the LIFE Cycle of PET project co-funded by the European Union.  This is in anticipation of future regulations, such as the separate collection of textile waste, which will be mandatory in Europe from 1 January 2025.

From fibre to fibre: circularity of textiles
Today, the textile industry relies largely on non-renewable resources to produce fibres and fabrics, partly turning to recycled PET bottles for recycled polyester fibres. However, this resource will become scarce as PET bottles are used exclusively for the production of new bottles in the food and beverage industry. In a circular economy, the materials used to produce textiles are obtained from recycled or renewable raw materials produced by regenerative processes. In addition to supplying raw materials for the demonstration plant, the consortium members also aim to produce new products from r-PET fibres using the company's biorecycling process.

"Partnering with Carbios and its consortium members demonstrates our continued commitment to incorporating more circular materials into our collections," said Esther Verburg, EVP, Sustainable Business and Innovation, Tommy Hilfiger Global and PVH Europe. "We are excited to support the development of Carbios' enzymatic recycling technology and to leverage new solutions that can help us drive fashion sustainably."

ESG aspects are most important to consumers when it comes to food and clothing. Young people in particular demand information and transparency: sustainability labels, certifications and reports ensure trust. For retailers and manufacturers, sustainability is becoming a must.

Under what conditions are the cows kept whose milk I drink? Does the manufacturer of my new T-shirt tolerate child labor? Does the retailer I trust deal fairly with employees and business partners? The majority of Germans ask themselves questions like these before making a purchasing decision. When shopping, 59 percent of consumers always or at least frequently pay attention to the ecological, economic or social sustainability of retailers and manufacturers. Among those under 35, the figure is even hugher with two-thirds, and among those over 55, one in two. These are the findings of a representative survey of 1,000 people in Germany commissioned by the auditing and consulting firm PwC Germany.

Sustainability is no longer a question of "if", but "how".
"Sustainability has become mainstream in recent years. For companies, paying attention to sustainability in their supply chains has already become a must," comments Dr. Christian Wulff. The Head of Retail and Consumer Goods at PwC Germany is convinced that companies will already have to give good reasons in the near future if they do not pay attention to the environment, social aspects and good corporate governance when producing a product. "The issue of sustainability is therefore no longer a question of whether, but of how," the retail expert continues.

Sustainability includes various aspects in the three areas of environment, social and sustainable governance (ESG). In the case of environmental sustainability, the focus is on issues relating to animal welfare - such as the conditions in which animals are kept or animal testing - and the use of recyclable materials. 40 percent of Germans would like to be informed about this before making a purchase. In the social sphere, the majority of respondents would like to know whether retailers and manufacturers comply with human rights (58 percent) - for example, whether they tolerate forced or child labor in their value chains. In terms of governance, one in two respondents would like to know about supply chains and be able to trace products before making a purchase.

Sustainability is particularly important for food
How closely consumers look at sustainability also depends on the product: For example, sustainability is particularly important to them when it comes to food. 81 percent of Germans pay attention to at least one of the three ESG criteria when buying food, i.e. environment, social issues or good corporate governance. But these criteria are also relevant when buying textiles: As many as 63 percent say they look at how sustainably the item was produced when buying clothing or shoes. While environmental aspects play the biggest role for food (62 percent), consumers are paying more attention to social aspects for clothing, shoes and accessories (52 percent).

Almost every second person has recently switched to sustainable products
The growing importance of ESG aspects in the purchasing behavior of German consumers is also evidenced by the shifts toward buying sustainable products. The trend toward sustainable products is clearest in the case of food: 45 percent of respondents state that they have consciously switched to more sustainable products within the past two years. By contrast, only 17 percent admit to switching (back) to less sustainable products, with one in three stating a lack of financial resources as the reason.

For just under half of those surveyed, a possible switch to more sustainable products would be supported by better availability in stationary retail. Legal regulations are also seen as helpful, both in terms of product labeling (38 percent) and for the production process (37 percent). More eye-catching product placement in stores would also help (37 percent).

Young people in particular demand transparency and education
Consumers' need for transparency in ESG matters is significant: According to the survey, almost three quarters of Germans obtain information about environmental sustainability issues at least occasionally. Two-thirds research aspects of social sustainability. A good half regularly find out about sustainable corporate governance.

Age has a major influence on how intensively people deal with the issue: While 80 percent of 16- to 24-year-olds find out about the environmental aspects of a product before buying it, only 59 percent of those over 65 do. "Younger people in particular are actively informing themselves and demanding transparency around ESG criteria," sums up Christian Wulff.

Consumers want information on packaging and online
To meet this need for information, the PwC expert advises manufacturers and retailers to provide detailed information about ESG aspects of products, especially online. "Keeping the associated, significantly increasing flood of data up to date at all times is increasingly becoming a challenge for companies that can only be solved by significant investments in new technologies."

Consumers agree on what companies can do to lend more credibility to their sustainability activities: A solid two-thirds consider recognized sustainability labels, certifications or independently audited sustainability reports to be suitable for credibly communicating activities in terms of ESG. "The results of our survey show that labels and independent certifications are very important in gaining the trust of customers. It is therefore worthwhile to have ESG measures confirmed by external organizations," says Christian Wulff.

Retailers and manufacturers should focus on transparency
"Manufacturers and retailers are faced with the task of ensuring a high level of transparency with regard to the sustainability of their products. This calls for honesty, but also creativity: In the case of fashion, for example, it is conceivable to trace the individual stages of the supply chain in detail and to show the costs incurred in the process. In this way, consumers can understand exactly how a price comes about," concludes Christian Wulff.

The Danish company Continuum Group ApS with its subsidiary companies in Denmark (Continuum Aps) and the UK (Continuum Composite Transformation (UK) Limited) wants to give end-of-life wind blades and composites a new purpose, preventing them going to waste. The goal is to reduce the amounts of CO₂ emitted to the atmosphere by the current waste streams, delivering a value to Europe’s Net Zero efforts.

Continuum states that it ensures all wind turbine blades are 100% recyclable and plans to build industrial scale recycling factories across Europe.

Net zero is the phrase on everyone’s lips, and as 2030 rapidly approaches we constantly hear updates about wind energy generating renewable energy that powers millions of European homes – but what happens when those turbine blades reach the end of their lifespan?

Currently the general answer is to put them into landfill or co-process them into cement, but neither is planet friendly. Many countries in Europe look to ban landfill from 2025, so this option is likely to be eliminated in the near future.

Continuum provides an alternative: When the end of their first life arrives, Continuum recycles them into new, high performing composite panels for the construction, and related industries. The vision of the Danes: Abandon the current landfilling, and drastically reduce CO₂ emitted during currently applied incineration & co-processing in cement factories by 100 million tons by 2050, via their mechanical composite recycling technology and their industrial scale factories.  

The technology is proven, patented, and ready to go, says Reinhard Kessing, co-founder and CTO of Continuum Group ApS, who has spent more than 20 years of research and development in this field, and advanced the reclamation of raw materials from wind blades and other composite products and transformation of these materials into new, high performing panel products.

By working with partners, Continuum’s cost-effective solution covers end-to-end logistics and processes. This spans from the collection of the end-of-life blades through to the reclamation of the pure clean raw materials and then the remanufacturing of all those materials into high value, highly performing, infinitely recyclable composite panels for the construction industry or the manufacture of many day-to-day products such as facades, industrial doors, and kitchen countertops. The panels are 92% recycled blade material and are said to outperform competing products.

Nicolas Derrien: Chief Executive Officer of Continuum Group ApS said: “We need solutions for the disposal of wind turbine blades in an environmentally friendly manner, we need it now, and we need it fast, and this is where Continuum comes in! As a society we are rightly focussed on renewable energy production, however the subject of what to do with wind turbine blades in the aftermath of that production has not been effectively addressed. We’re changing that, offering a recycling solution for the blades and a construction product that will outperform most other existing construction materials and be infinitely recyclable, and with the lowest carbon footprint in its class.”

Martin Dronfield, Chief Commercial Officer of Continuum Group ApS and Managing Director of Continuum Composite Transformation (UK) Ltd, adds: “We need wind energy operators & developers across Europe to take a step back and work with us to solve the bigger picture challenge. Continuum is offering them a service which won’t just give their business complete and sustainable circularity to their operations but help protect the planet in the process.“

Each Continuum factory in Europe will have the capacity to recycle a minimum of 36,000 tons of end-of-life turbine blades per year and feed the high value infinitely recyclable product back into the circular economy by 2024/25.

Due to an investment by Climentum Capital and a grant from the UK’s ‘Offshore Wind Growth Partnership’, Continuum are planning for the first of six factories in Esbjerg to be operational by the end of 2024 and for a second factory in the United Kingdom to follow on just behind it. After that they are looking to build another four in France, Germany, Spain, and Turkey by 2030.

As part of their own pledge to promote green behaviour, Continuum have designed their factories to be powered by only 100% green energy and to be zero carbon emitting environments; meaning no emissions to air, no waste fluids to ground, and no carbon fuel combustion.

Producing infection control clothing requires a lot of energy and uses lots of material resources. Fraunhofer researchers have now developed a technology which helps to save materials and energy when producing nonwovens. A digital twin controls key manufacturing process parameters on the basis of mathematical modeling. As well as improving mask manufacturing, the ProQuIV solution can also be used to optimize the production parameters for other applications involving these versatile technical textiles, enabling manufacturers to respond flexibly to customer requests and changes in the market.

Nonwoven infection control masks were being used in their millions even before the COVID-19 pandemic and are regarded as simple mass-produced items. Nevertheless, the manufacturing process used to make them needs to meet strict requirements regarding precision and reliability. According to DIN (the German Institute for Standardization), the nonwoven in the mask must filter out at least 94 percent of the aerosols in the case of the FFP-2 mask and 99 percent in the case of the FFP-3 version. At the same time, the mask must let enough air through to ensure that the wearer can still breathe properly. Many manufacturers are looking for ways to optimize the manufacturing process. Furthermore, production needs to be made more flexible so that companies are able to process and deliver versatile nonwovens for a wide range of different applications and sectors.

ProQuIV, the solution developed by the Fraunhofer Institute for Industrial Mathematics ITWM in Kaiserslautern, fulfills both of these aims. The abbreviation “ProQuIV” stands for “Production and Quality Optimization of Nonwoven Infection Control Clothing” (Produktions- und Qualitätsoptimierung von Infektionsschutzkleidung aus Vliesstoffen). The basic idea is that manufacturing process parameters are characterized with regard to their impact on the uniformity of the nonwoven, and this impact is then linked to properties of the end product; for example, a protective mask. This model chain links all relevant parameters to an image analysis and creates a digital twin of the production process. The digital twin enables real-time monitoring and automatic control of nonwoven manufacturing and thus makes it possible to harness potential for optimization.

Dr. Ralf Kirsch, who works in the Flow and Material Simulation department and heads up the Filtration and Separation team, explains: “With ProQuIV, the manufacturers need less material overall, and they save energy. And the quality of the end product is guaranteed at all times.”

Nonwoven manufacturing with heat and air flow
Nonwovens for filtration applications are manufactured in what is known as the
meltblown process. This involves melting down plastics such as polypropylene and forcing them through nozzles so they come out in the form of threads referred to as filaments. The filaments are picked up on two sides by air flows which carry them forward almost at the speed of sound and swirl them around before depositing them on a collection belt. This makes the filaments even thinner: By the end of the process, their thickness is in the micrometer or even submicrometer range. They are then cooled, and binding agents are added in order to create the nonwoven. The more effectively the temperature, air speed and belt speed are coordinated with each other, the more uniform the distribution of the fibers at the end and therefore the more homogeneous the material will appear when examined under a transmitted light microscope. Lighter and darker areas can thereby be identified — this is referred to by experts as cloudiness. The Fraunhofer team has developed a method to measure a cloudiness index on the basis of image data. The light areas have a low fiber volume ratio, which means that they are less dense and have a lower filtration rate. Darker areas have a higher fiber volume and therefore a higher filtration rate. On the other hand, the higher air flow resistance in these areas means that they filter a smaller proportion of the air that is breathed in. A larger proportion of the air flows through the more open areas which have a less effective filtration effect.

Production process with real-time control
In the case of ProQuIV, the transmitted light images from the microscope are used to calibrate the models prior to use. The experts analyze the current condition of the textile sample and use this information to draw conclusions about how to optimize the system — for example, by increasing the temperature, reducing the belt speed or adjusting the strength of the air flows. “One of the key aims of our research project was to link central parameters such as filtration rate, flow resistance and cloudiness of a material with each other and to use this basis to generate a method which models all of the variables in the production process mathematically,” says Kirsch. The digital twin monitors and controls the ongoing production process in real time. If the system deviates slightly from where it should be — for example, if the temperature is too high — the settings are corrected automatically within seconds.

Fast and efficient manufacturing
“This means that it is not necessary to interrupt production, take material samples and readjust the machines. Once the models have been calibrated, the manufacturer can be confident that the nonwoven coming off the belt complies with the specifications and quality standards,” explains Kirsch. ProQuIV makes production much more efficient — there is less material waste, and the energy consumption is also reduced. Another advantage is that it allows manufacturers to develop new nonwoven-based products quickly — all they have to do is change the target specifications in the modeling and adjust the parameters. This enables production companies to respond flexibly to customer requests or market trends.

This might sound logical but can be quite complex when it comes to development. The way that the values for filtration performance and flow resistance increase, for example, is not linear at all, and they are not proportional to the fiber volume ratio either. This means that doubling the filament density does not result in double the filtration performance and flow resistance — the relationship between the parameters is much more complex than that. “This is precisely why the mathematical modeling is so important. It helps us to understand the complex relationship between the individual process parameters,” says ITWM researcher Kirsch. The researchers are able to draw on their extensive expertise in simulation and modeling for this work.

More applications are possible
The next step for the Fraunhofer team is to reduce the breathing resistance of the nonwovens for the wearer without impairing the protective effect. This is made possible by electrically charging the fibers and employing a principle similar to that of a feather duster. The electric charge causes the textile fabric to attract the tiniest of particles which could otherwise slip through the pores. For this purpose, the strength of the electrostatic charge is integrated into the modeling as a parameter.

The Fraunhofer researchers’ plans for the application of this method extend far beyond masks and air filters. Their technology is generally applicable to the production of nonwovens — for example, it can also be used in materials for the filtration of liquids. Furthermore, ProQuIV methods can be used to optimize the manufacture of nonwovens used in sound-insulating applications.