Innovative textile coating solution enhances Team Sonnenwagen´s new official team clothing

Covestro Huafeng and Cyclone Collaborate on More Sustainable Sports Kit


• Huafeng developed more sustainable HAPTIC® textile coating solution based on Covestro’s partly bio-based Impranil® CQ DLS/1 PU dispersion 
• New textile coating solution was used to produce official shorts and shoes of Team Sonnenwagen solar car project 
• HAPTIC® Art ink solution enables more design versatility and durability alongside significant reductions in environmental impact 
• Apparel and footwear fabrics are made by Huafeng based on Cyclone recycled PET yarns, delivering even lower production-related emissions 

Team Sonnenwagen, a student team from RWTH Aachen and FH Aachen, Germany, is committed to more sustainable mobility using renewable energy. With a self-constructed solar racing car, they once again plan to take part in the Bridgestone World Solar Challenge in October 2023 in Australia. The team also attaches great importance to a more sustainable sports kit. Huafeng, a leader in textile technology, supports this request by providing more sustainably made athletic shoes and shorts for team outfits. For this purpose, Huafeng used a partly bio-based polyurethane (PU) dispersion from Covestro, the main sponsor of Team Sonnenwagen. 

The new official team equipment provided by Huafeng features shorts and sports shoes with designs using Huafeng’s newly launched HAPTIC® textile coating system, which contains partly bio-based INSQIN® PU dispersions from Covestro. In addition, fabrics for the garments and shoes are made by Huafeng based on Cyclone recycled polyethylene terephthalate (rPET) yarns derived from post-consumer plastic bottles. The shoe upper material is made of 100 percent Cyclone rPET, while the shorts consist of 86 percent Cyclone rPET and 14 percent Spandex for ensuring a comfortable fit. 

Lina Schwering, Team Manager of Team Sonnenwagen Aachen: "Our new official equipment looks fantastic – and we’re particularly excited about its sustainability benefits! Combined with its excellent performance, it fits well with our vision for a more sustainable mobility future. We’re grateful for the continued support of Cyclone, Huafeng with its HAPTIC® products, and Covestro as we pursue this vision." 

The next generation of textile coating 
Developed by Huafeng using Covestro’s partly bio-based PU Impranil® CQ DLS/1, the HAPTIC® Art textile coating system used for the shoes enables especially outstanding aesthetics, improved mechanical performance, and reduced production-related emissions. Thanks to its high solids content and thixotropic properties, the system allows manufacturers to achieve a high coating thickness, making it well-suited for creating coatings with detailed images and sophisticated 3D effects on apparel and footwear. 

Images and textures applied using the HAPTIC® Art ink system have undergone a series of tests for properties such as flexibility, adhesion, and resistance to hydrolysis, washing, and abrasion. The excellent results demonstrate that the Art ink is particularly suitable for coating on high-performance sports footwear. In recognition of its excellent mechanical properties, Huafeng’s ink coating system recently received the ISPO Best Product Award. 

Dr. Thomas Schmidt, Director of Innovation & Creation at Huafeng: "HAPTIC® Art ink represents an important expansion of our aesthetic coating capabilities, offering exceptional design versatility along with substantial environmental benefits. For example, the new Team Sonnenwagen shoes deliver savings of 260 g CO2e per pair compared to conventionally manufactured sports shoes*. We look forward to developing even more sustainable solutions that help drive the future of textile coating." 

Toward a more sustainable sportswear industry 
With strong environmental credentials, this new coating system can also help meet the growing demand for more sustainable sportswear. Traditionally, sports apparel and footwear have relied heavily on virgin fossil-based PET materials and PU coatings to achieve the required performance, appearance, and durability. However, by combining Huafeng’s textile coating expertise with Covestro’s partly bio-based INSQIN® PU technology, Team Sonnenwagen´s new equipment proves that a more sustainable approach is possible. 

Dr. Torsten Pohl, Head of Global Textile Coatings at Covestro: "This new textile coating system represents a major step forward in terms of both performance and aesthetics. Covestro’s partly bio-based Impranil® CQ PU dispersion plays a major role in the shoe’s strong environmental credentials, contributing around 80 g to the overall CO2e savings*. This technology will enable garment and footwear manufacturers to create products that not only look incredible but also deliver a reduced environmental impact." 

*According to internal calculations 


About Covestro: 
Covestro is one of the world’s leading manufacturers of high-quality polymer materials and their components. With its innovative products, processes and methods, the company helps enhance sustainability and the quality of life in many areas. Covestro supplies customers around the world in key industries such as mobility, building and living, as well as the electrical and electronics sector. In addition, polymers from Covestro are also used in sectors such as sports and leisure, cosmetics and health, as well as in the chemical industry itself. 

The company is committed to becoming fully circular and is striving to become climate neutral by 2035 (scope 1 and 2). Covestro generated sales of EUR 18 billion in fiscal 2022. At the end of 2022, the company had 50 production sites worldwide and employed approximately 18,000 people (calculated as full-time equivalents). 

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Forward-looking statements 
This news release may contain forward-looking statements based on current assumptions and forecasts made by Covestro AG. Various known and unknown risks, uncertainties and other factors could lead to material differences between the actual future results, financial situation, development or performance of the company and the estimates given here. These factors include those discussed in Covestro’s public reports which are available at www.covestro.com. The company assumes no liability whatsoever to update these forward-looking statements or to conform them to future events or developments. 

About Huafeng: 
Huafeng is a high-tech textile manufacturer with a strong focus on sport industry and new automotive applications. Modern knitting and weaving technologies and water saving dying technologies are applied for manufacturing high performance fabrics for footwear and apparel applications. Huafeng is committed to environmentally friendly innovation and a more sustainable textile supply chain. Decarbonizing manufacturing processes is a main goal supported by photovoltaic electricity and bio-mass heat generation. 
Find more information at www.huafeng-cn.com 
The HAPTIC 3D textile coating technology was developed by Huafeng and modernized the shoe making process for more sustainablilty and efficiency. Very outstanding and individual design options can be created by the HAPTIC Art process offering hand painted high performance 3D designs. Find more information at www.haptic-art.com and www.hapticcoating.com 

About Cyclone: 
Cyclone is a leading polyester recycing company. High-tech recycling equipment achieves top quality rPET yarns for multi funcional use in sport industry and automotive industry. Post consumer PET bottles are mechanically recycled into high quality rPET yarns. A new chemical recycling plant allows recycling of pre- and post consumer textile waste. Multi stage cleaning and purification processes lead to vergin-like rPET yarn qualities. rPET yarns are optionally doped dyed providing colorful yarns without any water consumption during the manufacturing process. 
Find more information at www.cycloneyarn.com