From the Sector

• Interfilière Shanghai, 26th-27th September 2019, Booth 1C11

Able to offer an alchemy of design and sustainable features, Iluna Group with ROICA™ by Asahi Kasei join the latest edition of Interfilière Shanghaiwith a range of developments capable of combining innovation, aesthetics and quality.

"Ethical" lace and stockings, where quality standards go hand in hand with fashion content, respecting both the environment and humans, an offer already selected among the protagonists of the Sustainable Thinking Exhibition of the Salvatore Ferragamo Museum, for its value in the field of responsible innovation.Experts in the production of stretch lace  since 1985 ILUNA today represents the largest European laces’producer. 

Thanks to the effectiveness of their responsible innovation strategy, Iluna Group has been the very first lace producer to have gained the GRS(Global Recycled Standard) for their  transformed products together with the company certification STeP (Sustainable Textile Production by Oeko –Tex®).

A relevant  achievement for the firm that, thanks to the Green Labelcollection, now even richer, make responsible innovation an asset for production that focuses on smart ingredients as ROICA Eco-Smart™ family andQ-Nova® by Fulgar.

Hexcel Corporation has been approved by Boeing to produce HexPEKK™-100 aerospace structures for major commercial aircraft platforms.

After rigorous review of Hexcel’s proprietary poly-ether-ketone-ketone and carbon fiber material formulation, Hexcel’s superior HexPEKK™-100 end-use components – as well as its highly-controlled HexAM™ additive manufacturing process (which uses selective laser sintering) – are now obtainable through Boeing’s Qualified Provider List (QPL). These HexPEKK™ components will be manufactured-to-print for commercial aerospace applications where complexity, weight reduction, and strong mechanical performance are critical.

Hexcel provides high-rate serial part production with reduced lead-time and at a lower cost than traditional intricately machined aluminum or composite structures. HexPEKK™-100 parts meet interior aircraft smoke and toxicity requirements and are ideal for complex components such as optimized brackets, environmental control system ducts, and castings.

In a strongly declining market, Autoneum increased revenue in local currencies by 1.9% in the first six months of 2019 thanks to numerous model ramp-ups. At CHF 1 156.1 million, revenue in Swiss francs reached the previous year’s level (CHF 1 159.4 million). All four Business Groups outperformed the market. The turnaround program in North America is showing progress, but the persisting operational inefficiencies at two US plants continue to impact the profitability of the entire Group, as already communicated. Accordingly, EBIT fell to CHF 16.4 million in the first semester, while the anticipated negative net result totaled CHF –6.0 million.

The weak global macroeconomic environment, ongoing trade disputes and the resulting uncertainty among car manufacturers and consumers led to a further sharp decline in global light vehicle production in the first half of 2019. In this difficult market environment, Autoneum was able to increase its revenue by 1.9% in local currencies in the first six months compared to the prior-year period, particularly thanks to numerous model ramp-ups. At CHF 1 156.1 million, revenue in Swiss francs reached the prior-year’s level (CHF 1 159.4 million). While the number of vehicles produced in all regions declined, Business Groups (BG) North America, Asia and SAMEA (South America, Middle East and Africa) grew and outperformed the respective market developments, two of them significantly. Only at Business Group Europe did the sharp drop in production volumes among vehicle manufacturers result in fewer call-offs and lower year-on-year revenue.

wear2wear is an innovative industrial partnership dedicated to high-quality and sustainable clothing. Five expert partners in Europe have come together to cover the entire recycling loop. On cutting-edge production systems, textile fibres from used clothing will be turned into functional fabrics. Schoeller Textil AG is supplying a wholistic textile portfolio for the workwear area. At Schoeller Textil, the recyclable, functional fabrics from the wear2wear concept belong to the Inspire fabric group. These are high-quality protective workwear fabrics made of 100 percent polyester, which offer the greatest clothing comfort and often feel just like cotton. They are also compliant with the stringent requirements of the bluesign® system.

The sustainable wear2wear concept is synonymous with high-quality, responsible clothing. In European operations, textile fibres from used garments are used to produce new functional fabrics. Depending upon the area of intended use, they also meet strict waterproofing, breathability, protection and comfort requirements. To ensure that the raw material cycle comes full circle, these textiles can be recycled again when they reach the end of their service life. As a result, there is no waste, and they go on to produce new garments. As the wear-2-wear partner companies guarantee that – from the quality of the raw materials to the guaranteed recycling end process – these are 100 percent recyclable, functional fabrics made of recycled textile fibres. Water- and dirt-repelling technologies based on renewable raw materials, along with the most advanced membrane technology, will ensure that the textiles are manufactured and impregnated entirely without the use of PFC in the future too.

Five partner companies  
The five European partner companies in the wear2wear cooperation cover the entire recycling loop. Heinrich Glaeser Nachfolger GmbH is a German fibre and yarn producer and the “recycler” in the loop. Märkischen Faser GmbH (D) is the “upcycler” and fibre manufacturer. Carl Weiske GmbH & Co. KG (D) develops the polymers, fibres, yarns, chemical additives and textile systems, and TWD Fibres GmbH (D), a fully-integrated filament yarn producer, covers the entire range of polyester and polyamide 6.6 continuous filament yarns. Schoeller Textil AG, the innovative Swiss company, is responsible for textile production and manufactures sustainable high-tech fabrics with maximum clothing comfort. The matching climate-neutral and similarly 100 percent recyclable PTFE and PFC-free membrane, as well as recycled outer materials and linings, are supplied by Sympatex Technologies (D), the ecological alternative among the textile function specialists. DutchSpirit is a Dutch company which has been dedicated to environment-friendly clothing since 2010. Its mission is to significantly increase the awareness for sustainable clothing and offer recyclable clothing in the workwear segment. DutchSpirit is the initiator for the development of the Inspire products from Schoeller Textil and provided the inspiration for the wear2wear concept. Further garment-making partners who now also belong to the cooperative group include: Anchor Workwear BV (NL), Hüsler Berufskleider AG (CH), Groenendijk Bedrijfskleding BV (NL), Bedrijfskledingdiscounter BV (NL) and Rifka'S (NL).

• Hexcel’s Composite Innovations For Aerospace, Automotive, Energy And Marine Applications At JEC World 2019 Hall 5 - Stand J41

STAMFORD, Conn. – At this year’s JEC World taking place in Paris on March 12-14, Hexcel will promote a wide range of composite innovations for customer applications in aerospace, automotive, energy and marine markets.

Aerospace Innovations

Hexcel’s HiTape® and HiMax™ dry carbon reinforcements were developed to complement a new generation of HiFlow™ resin systems, producing high quality aerospace structures using the resin infusion process. HiTape® was developed for the automated lay-up of preforms and HiMax™ is a range of optimized non-crimp fabrics (NCF). Both products incorporate a toughening veil to enhance mechanical properties, meeting the structural requirements for aerospace parts.

Visitors to JEC will see an Integrated Wing Panel demonstrator and an I-beam, both made with HiTape® reinforcements, and an Opticoms rib made with HiMax™ NCF. The Opticoms rib and I Beam were both manufactured using C-RTM (Compression Resin Transfer Molding). They were injected with Hexcel’s RTM6 resin in a process taking less than 5 minutes. The total manufacturing cycle for both parts was just 4.5 hours.

Also among the Aerospace exhibits, Hexcel will display a composite petal for a satellite antenna, manufactured by Thales Alenia Space Italia. The petal is part of a set of 24 deployable structural elements that form the large area reflector assembly used on board Low Earth Orbit (LEO) observation satellites. Thales Alenia Space Italia selected Hexcel’s HexPly® M18 prepreg for this application, acknowledging the superior mechanical and outgassing properties provided.

Another Hexcel prepreg application on show is a “zero” frame, manufactured by Aerofonctions for the engine area of Daher’s TBM 910/930 single-engine turboprop aircraft. Hexcel’s HexPly® M56 prepreg was selected by Daher for the “zero” frame – a product developed for Out of Autoclave applications that provides the same high quality and performance as autoclave-cured prepregs, from a simple vacuum bag cure in an oven.

With 50 years of experience behind its comprehensive range of high-strength, high-strain PAN-based carbon fibers, Hexcel continues to innovate, and is introducing two new fibers to its portfolio. HexTow® HM50 combines high modulus and high tensile strength, making it ideal for commercial and defense aircraft and engines. HexTow® 85 was developed specifically to replace rayon-based carbon fiber for ablative applications.

HexTow® carbon fiber holds the most qualified carbon fiber positions on aerospace programs in the industry and is the best unsized fiber available on the market. It provides excellent bonding interfacial properties with thermoplastic matrices and is the best-performing fiber for 3D printing applications.

Additive manufacturing is another area of expertise for Hexcel, using PEKK ultra-high performance polymers and HexAM™ technology to manufacture carbon-reinforced 3D printed parts. This
innovative process provides a weight-saving solution for intricate parts in highly demanding aerospace, satellite and defense applications. HexPEKK™ structures offer significant weight, cost and time-to-market reductions, replacing traditional cast or machined metallic parts with a new technology.

Hexcel is well known for its range of weight-saving, stiffness-enhancing honeycombs and the company adds value by providing a range of engineered core solutions to customers from facilities in the USA, Belgium and the newly opened Casablanca plant in Morocco. Hexcel’s engineered core capabilities enable highly contoured parts with precision profiling to be produced to exacting customer specifications. An example of such a part will be on display at JEC. Made from Aluminum FlexCore®, the part is CNC machined on both sides, and formed and stabilized with both peel ply and flyaway layers of stabilization. Aircraft engines benefit from a number of Hexcel core technologies including HexShield™ honeycomb that provides high temperature resistance in aircraft engine nacelles. By inserting a thermally resistant material into honeycomb cells, Hexcel provides a core product with unique heat-shielding capabilities that allows for the potential re-use of material after a fire event.

Hexcel’s Acousti-Cap® broadband noise-reducing honeycomb significantly improves acoustic absorption in aircraft engine nacelles. The acoustic treatment may be positioned at a consistent depth and resistance within the core, or can be placed in a pattern of varying depths and/or resistances (Multi-Degrees of Freedom and 3 Degrees Of Freedom), offering an acoustic liner that is precisely tuned to the engine operating conditions. These technologies have been tested at NASA on a full engine test rig and meet all 16 design conditions without trade-offs.

HexBond™ – the new name in Adhesives

Hexcel’s range of high performance adhesives has expanded considerably following the company’s acquisition of Structil. The company has now decided to unite the range by marketing all of its adhesive products using HexBond™ branding. The comprehensive range of HexBond™ structural film adhesives, foaming adhesive films, paste adhesives, liquid shims, epoxy fillets and Chromium free liquid primers is suitable for a wide range of applications in combination with Hexcel’s prepreg and honeycomb products.

Automotive Innovations

Hexcel’s carbon prepreg patch technology provides an innovative way of locally stiffening and reinforcing metal parts, providing noise and vibration management functionality. HexPly® prepreg patches consist of unidirectional carbon fiber impregnated with a fast curing epoxy matrix that has self-adhesive properties, enabling it to bond to metal in a highly efficient one-step process. These key technology properties are demonstrated in an 18.5kg aluminum subframe (that is 50% lighter than steel equivalents), which was reinforced with 500 grams of HexPly® prepreg and tested by Saint Jean Industries. The part demonstrates a significant reduction in noise, vibration and harshness (NVH). Other benefits include lower production costs, energy savings, increased driver comfort, production flexibility and part count reduction. With this technology Hexcel is a finalist in the JEC Innovation Awards 2019 in the Automotive Applications category.

HexPly® prepreg patch technology was also applied to a hybrid side sill demonstrator developed with Volkswagen and Dresden University to address future crash test requirements, specifically for electric cars. Combining fiber-reinforced plastic (FRP) with metal, the hybrid construction allows for optimum performance including weight savings, enhanced safety, increased energy absorption, battery protection in a crash situation and production flexibility.

Hexcel will also display a lightweight CFRP transmission crossmember produced from Hexcel’s high performance HexMC®-i 2000 molding compound. The transmission crossmember was developed in partnership with the Institute of Polymer Product Engineering (at Linz University), Engel and Alpex. As the part connects the chassis together and supports transmission it has to be stiff and strong, resisting fatigue and corrosion. Hexcel’s HexMC®-i 2000 was selected as the best-performing molding compound on the market, curing in as little as two minutes to produce lightweight, strong and stiff parts.
To produce the transmission crossmember HexMC®-i 2000 preforms are laid up in Alpex molds and compression-molded in a v-duo press that was tailored for the application by Engel. Ribs, aluminum inserts and other functions can be molded into the part using the single-stage process, reducing component-count. Any offcuts from the preforms can be interleaved between the plies of material to provide additional reinforcement in key areas - meaning that the process generates no waste.

Other Automotive promotions on Hexcel’s stand at JEC World include a composite leaf spring manufactured by ZF using HexPly® M901 prepreg. In contrast to steel leaf springs, composite versions offer many advantages including weight savings of up to 70%, high corrosion resistance, optimized system integration and superior performance. HexPly® M901 prepreg reduces the cure cycle to below 15 minutes and provides 15% higher mechanical performance, with enhanced fatigue properties. It also operates at high temperatures, providing a Tg of up to 200°C following a post cure.

Marine Innovations

Hexcel has a comprehensive range of products aimed at racing yacht and luxury boat builders that include America’s Cup, IMOCA class and DNV GL-approved prepregs, woven reinforcements and multiaxial fabrics for hull and deck structures, masts and appendages.

At JEC World Hexcel will display an IMOCA yacht mast manufactured by Lorima using HexPly® high modulus and high strength carbon fiber prepreg from Hexcel Vert-Le-Petit. Lorima is the exclusive official supplier of masts for IMOCA 60 class racing boats.

Hexcel’s HexTow® IM8 carbon fiber has been selected as the highest performing industrial carbon fiber on the market and will be used by spar and rigging manufacturer Future Fibres to manufacture their AEROrazr solid carbon rigging for all the teams in the 36th America’s Cup.

Hexcel’s HiMax™ DPA (Dot Pattern Adhesive) reinforcements are non-crimp fabrics supplied pre-tacked, allowing multiple fabrics to be laid-up more easily in preparation for resin infusion. Providing an optimal, consistent level of adhesion, they allow a faster and more consistent resin flow, as well as eliminating the use of spray adhesive for a healthier working environment and lower risk of contamination. Simply unrolled and applied to the mold or core layer before the introduction of resin, HiMax™ DPA fabrics are widely used in boat building, where lay-up times can be reduced by up to 50%.

Wind Energy Innovations

Hexcel has developed a range of HexPly® surface finishing prepregs and semi-pregs for wind turbine blades and marine applications. Providing a tough, durable and ready-to-paint surface without using in-mold coats, these products shorten the manufacturing cycle and reduce material costs. HexPly® XF2(P) prepreg is optimized for wind blades and has a ready-to-paint surface, straight from the mold, saving at least 2 hours of takt time.

Polyspeed® pultruded carbon laminates were developed for load-carrying elements in a blade structure and are manufactured with a polyurethane matrix that provides outstanding mechanical performance in terms of stiffness and durability. The blade manufacturing process is optimized, with increased throughput. The pultruded laminates are supplied in coils as continuous cross section profiles.
HiMax™ non-crimp fabrics using E-glass, high modulus glass and carbon fibers are also available in a wide range of unidirectional, biaxial and triaxial constructions. HiMax™ fabrics have applications throughout the turbine, from the stitched carbon fiber UDs used in the main structural elements, to glass fabrics and hybrids for blade shells and nacelles. There are also specialist applications such as lightweight fabrics for heated leading edge de-icing zones.

"Datacenter in a box" is the new powerful, flexible and secure IT infrastructure solution for the textile industry of the future

Remscheid/Berlin – Oerlikon Manmade Fibers Segment Industrie 4.0 solutions for the production of polyester, nylon and polypropylene are based on the digitalization of the production landscape and the intelligent processing of the flood of data generated in this way. In the future, the segment will offer its customers a new powerful, flexible and, above all, secure IT infrastructure. The "Datacenter in a box" was presented for the first time at the OpenStack Summit in Berlin, Germany, to a broad specialist audience. The compact datacenter works on the basis of the open operating system OpenStack, which enables virtual computing in a secure private cloud environment.

Externally, the datacenter looks unspectacular: The box contains standard hardware such as server rack, network components, batteries for reliability, monitoring sensors and a few more things. But what counts are the inner values. The Open Source software OpenStack consists of many different services and allows the virtualization of a large pool of computing, storage and network resources in a flexible, scalable private cloud. This brings two central advantages: On the one hand, virtual operation reduces costs and simplifies configuration, adaptation and expansion of the IT infrastructure today and tomorrow. On the other hand, long-cherished wishes for high data protection are fulfilled, because a private cloud maintains secure, highly encrypted data connections away from the World Wide Web.

"The functional diversity of a cloud, operation and hardware in one's own four walls at the same time – our customers immediately understood these advantages" reports Mario Arcidiacono, specialist for Business Intelligence & Data Warehouse at the Oerlikon Manmade Fibers Segment. The IT architecture also guarantees infrastructure management without downtime, the system and virus protection are automatically kept up to date at all times. Another major advantage is the scalability of the hardware and software, which can be adapted to changing requirements.

OpenStack Summit: Project example with yarn manufacturer from Vietnam presented

With these trump cards and a project example, the Group segment confidently presented itself to a genuine specialist audience in mid-November. At this year's OpenStack Summit in Berlin, where thousands of cloud professionals met, Oerlikon Manmade Fibers Segment CEO Georg Stausberg presented the customer installation at Century Synthetic Fibre Corporation, which supplies many well-known sporting goods manufacturers. The Vietnamese producer of high-quality yarns not only uses the new datacenter, but also the connection to the new "Common Service Platform (CSP)" of the Oerlikon Manmade Fibers Segment as well as an innovative new dashboard solution in prototype status. In this case, the digital instrument panel supports employee communication during shift changes in the yarn factory and introduces agile methods into the work process. The board visualizes the progress of central key figures and operating parameters from the current production process. Based on this, the employees of the successive shifts can now exchange important process and quality information and possible instructions for action within a few minutes in a structured stand-up meeting. "For the customer this means an immediate improvement of the processes, and he can significantly increase the efficiency and quality of his employees' work," assures Joerg Gross, Senior Manager in the IT-architecture team at the Oerlikon Manmade Fibers Segment.

New IT-basis for the Plant Operation Center (POC) already successful established on the market

The fixed connection to the "Common Service Platform (CSP)" of the Oerlikon Manmade Fibers Segment plays a pioneering role in such solutions. This enables services and software updates to be provided smoothly, quickly and automatically. In this way, service applications can transform collected data into instructions or automated commands to secure and improve processes. For example, the secure availability of management solutions such as the Plant Operation Center (POC) for process monitoring can be increased and possible errors can be rectified very quickly. The new digital solution AIM4DTY (AIM = Artificial Intelligence Manufacturing), which was unveiled at the ITMA ASIA + CITME 2018 in Shanghai, China, a few weeks ago, can also be implemented in this way. AIM4DTY uses methods of machine learning, determines probable causes of errors in texturing and helps to improve quality during production.

Launch at ITMA Barcelona 2019

The Oerlikon Manmade Fibers Segment offers such remote-supported services on request. Data will therefore only be transferred to the “Common Service Platform (CSP)” with the customer's consent. In addition, all data is processed in accordance with the new European General Data Protection Regulation (GDPR) and all other international data protection standards. Against this backdrop, the Oerlikon Manmade Fibers Segment plans to provide its datacenter with graded or customer-specific solutions: from complete service to provision with customer training for its own operations. After initial practical experience with several pilot customers, the segment intends to launch its offering on the market next year and officially present it to the textile industry at ITMA 2019 in Barcelona, Spain.

What does the furniture market look like and what potential composites offer for the furniture of today and tomorrow? The AZL is investigating this question together with companies from the composite and furniture industry. The result will be an overview of the current market and the materials used to date as well as an outlook on future mass applications for fiber-reinforced plastics (FRP). The study is open to interested companies and starts with a kick-off meeting at Composites Europe in Stuttgart on November 7th, 2018.

Furniture, its design and function have undergone major changes in recent decades: From robust lifelong companions to trend-setting models, from handmade one-of-a-kind pieces to mass products, from storage objects to multi-functional and “smart” all-rounders. This goes along with an increased diversity in terms of design and the materials used – and high potential for composites that offer additional design freedom and exceptional mechanical properties at low weight.

Study provides overview of furniture market and unique selling points of composites
In order to systematically identify the potential of fiber-reinforced composites and to use them in future furniture applications, the AZL is starting a study together with companies from the furniture and composite industry. Within four and a half months the market for furniture will be segmented, design and technology trends will be identified and the technical requirements for furniture and furniture components will be broken down to identify applications with high potential for composites. The overall goal is to understand the selection process and needs of the furniture designer in order to bring composites to the market as a targeted alternative to conventional materials.

Virginia Bozsak, Technical Manager Composites at ARKEMA Innovative Chemistry is participating in the study: “The ever-growing population number requires environmentally friendly material and a solution for the end of life treatment to recollect and reuse materials. For fast changing markets such as the furniture market, these materials also need to offer an enormous freedom of design. Arkema already answers this demand with the only liquid thermoplastic resin Elium® used as a thermoset resin to produce composite structural or aesthetical parts. With the joint study, we aim to identify specific applications in the furniture market to make use of material which is not limiting creativity or design specifications but rather enabling the future to be revolutionized.”

• Huntsman Textile Effects and The Chemours Company FC, LLC (‘Chemours’) have agreed to expand their long-term alliance in the area of durable water repellence (DWR).

Singapore – By combining the strengths of both companies in innovation, technical support and marketing, the expanded co-operation unlocks the full potential of the alliance to develop and deliver new, sustainable DWR solutions and chemistry.  This historical alliance that was established in the early 1990s has been at the forefront of delivering state-of-the-art solutions to the textile industry for durable water repellent effects. In addition to
fluorinated solutions, the expanded alliance will now be able to offer non-fluorinated alternatives as well. The alliance will cover different aspects of the value chain including research, marketing, technical support and manufacturing.

“Strengthening the partnership between Huntsman Textile Effects and Chemours unlocks the full potential of both companies to shape technology and product offerings in sustainable durable water repellency. Our cooperation, which has stood the test of time, has clearly demonstrated that strong environmental credentials and performance can co-exist in equal measure. We are excited to move forward with a broader alliance as we strengthen our position as the industry leader in DWR textile solutions,” said Jay Naidu, Vice President, Strategic Marketing and Planning, Huntsman Textile Effects.

“Chemours is excited to expand our partnership with Huntsman Textile Effects. This partnership reinforces our commitment to take a leadership role in the innovation and development of more sustainable and high performing products that address the rapidly evolving needs of the textile industry and the consumers that use these products,” said Jesal Chopra, Vice President, Chemours Fluoropolymers.

Together, Huntsman Textile Effects and Chemours have worked to lead the textile industry’s transition  from long-chain water repellent products to more environmentally friendly short-chain chemistry and, more recently, non-fluorinated chemistry. The collaboration has resulted in new, market-leading DWR solutions that deliver on performance and sustainability. Chemours introduced Teflon EcoElite™ with Zelan™ R3 technology in 2015, a renewably sourced, non-fluorinated water repellent finish. Containing 60% plant-based materials* and complying with all key industry standards, Zelan™ R3 repellent offers excellent water repellency and durability while preserving fabric breathability. It meets or exceeds performance levels possible with fluorinated technologies. Teflon™ Eco Dry with Zelan™ R2 PLUS technology, which compliments Teflon EcoElite™, was recently introduced. Zelan™ R2 PLUS contains 30% renewably sourced plant-based raw materials* and is focused on delivering a high level of durable water repellency for all substrates.

In 2017, Huntsman Textile Effects introduced PHOBOTEX® RSY non-fluorinated durable water repellent, which was developed to specifically meet extreme protection, comfort and durability requirements for both synthetic and cellulosic fibers, delivering an enhanced environmental profile for brands. PHOBOTEX® RSY durable water repellent raises the bar in performance on synthetics, allowing brands to offer high-performance weather protection with an assurance of eco-friendly sustainability. Providing effective protection in extreme environments together with breathable comfort, PHOBOTEX® RSY durable water repellent repulses rain, sleet, and snow, ideal for highperformance outerwear fabrics.

Both companies bring a rich and established heritage firmly centered on research and innovation. Through their expanded alliance, joint research and development efforts in DWR enable Huntsman and Chemours to stay at the forefront of industry trends and regulatory changes for a more sustainable textile industry.

Because aircraft engine noise contributes to environmental noise around airports and populated cities, the aerospace industry has been working on new aircraft designs that will emit less noise so they can meet the ever-increasing requirements imposed on the industry to reduce noise pollution. Shielding and absorbing aircraft engine noise at the source represents one of the most effective ways to address this issue.

Hexcel, a global leader in advanced composite technology, has been at the forefront of acoustic technology development with its Acousti-Cap® broadband sound-reducing honeycomb, which enables engine designers to reduce the noise from takeoffs and landings yet without adding significant weight to the aircraft.
 
“Hexcel has continued investing in the evolution of Acousti-Cap® product technology to improve performance and reduce cost,” said Imad Atallah, Group Product Manager for Honeycomb at Hexcel. “Collaboration with industry leaders, including NASA and Boeing, has been key to that development,” he added.
 
The 2DOF (Two Degrees of Freedom) honeycomb core acoustic liner was introduced in 2008 and was subsequently adopted and installed on the Boeing 787 Dreamliner inlet, the Boeing 747-8 inlet and transcowl, and more recently on the Boeing 737 MAX inlet. This success enabled continued technology development and evolution in MDOF (Multi-Degrees of Freedom) where the acoustic septum is inserted in the honeycomb cell at different heights, as well as having two septums in honeycomb chambers. This type of technology allows for improved acoustic attenuation at a broader frequency range, as well as increased absorption.
 
“Hexcel’s Acousti-Cap® technology has shown great performance benefits over competing technologies from the beginning” said Clark Smith, Director of Technology -- Core Products at Hexcel. “We have continued to improve the technology through taking advantage of the single cell treatment concept, by adding capability that the industry was looking for,” he added.   
 
Hexcel’s latest Acousti-Cap® technology was recently tested in a joint NASA-Boeing flight test on a B737 MAX test platform, and the results beat expectations as reported by Aviation Week. Collaboration between Hexcel and NASA over several years on the development of MDOF technology led to the successful test results on this latest flight test.
 
The ability to attenuate a broader noise frequency range and increase acoustic absorption with the Hexcel liner has allowed an optimized design of the overall inlet that reduces drag and improves noise attenuation. Hexcel continues to invest in acoustic liner technology and is proud of the positive results of this NASA-Boeing flight test.

Aachen researchers have developed the adaptive textile facade green.fACade, which was presented on 2^nd August 2018 in the Aachen Faculty of Architecture of RWTH Aachen University, Germany. green.fACade is installed in front of a building like a second skin and can permanently reduce nitrogen oxide pollution in cities.

The researchers achieve the reduction of harmful nitrogen oxides (NO and NO2) by coating the facade with titanium dioxide. Titanium dioxide acts as a photo catalyst and enables the oxidation of nitrogen oxides to form washable nitrate (NO3-). Since the facade is also greened, it contributes to the conversion of carbon dioxide into oxygen by photosynthesis. In addition, a green facade creates an optical resting point in the cityscape and reduces urban heat through evaporation cooling. The enclosed pictures demonstrate how the introduction of green.fACade can have an effect. Picture 1 shows the Aachen Central Bus Station after, picture 2 before the possible introduction of green.fACade.

green.fACade is part of the innovative research project "adaptive textile facades", which uses the special properties of textiles. Thanks to its design, textiles can let sunlight and air through, thus contributing to a modern, aesthetic building design. A new feature of the research project is that further elements such as the titanium oxide coating or sun protection elements are integrated into the textile facade and placed in front of the existing building facade. The adaptive textile facade acts independently and thus reduces energy consumption through the positive climatic effects on the building facade.

"Adaptive Textile Facade" is part of a current research series with the aim of developing innovative facade constructions that are climate-neutral and increase the comfort of local residents. The research team consists of the three RWTH fields of architecture (Faculty of Architecture, PhD student architect M.Sc. Jan Serode), medicine (University Hospital RWTH Aachen, Clinic for Ophthalmology, Prof. Dr Walter) and textile technology (Institut für Textiltechnik, Prof. Dr Gries) and was able to contribute its expertise in the best possible way.

This summer the research team was supported for the first time by the Munich architectural office Auer Weber, represented by managing director Philipp Auer: "For us architects, developments in the field of textile outer shells are a special challenge. Here, highly developed textile materials and processing methods are combined with the lightness and grace of fabrics. Adaptive textile facade elements will increasingly turn the "building shell" into a "building skin", a system that not only offers weather, heat and sun protection, but is in constant intelligent exchange with its environment".

The great importance of these topics for the public was documented by the presence of Kirsten Roßels, representative of the Department of Economics, Science and Europe of the city of Aachen.  Ms Roßels explains: "As the city of Aachen, we are delighted with the innovative and future-oriented project ideas that are being developed at Aachen University, such as the adaptive textile facade. These developments underline the importance of Aachen as a city of science and I would appreciate it if these and other technologies could also become visible in Aachen in the future".

Prof. Dr Gries from the Institut für Textiltechnik sums up: "As textile researchers, we see a great opportunity to develop concrete solutions for our urban living spaces together with renowned experts from other disciplines. I'm sure we can make the urban climate more pleasant and reduce pollution."