From the Sector

The German Institutes of Textile and Fiber Research Denkendorf (DITF) have modernized and expanded their melt spinning pilot plant with support from the State of Baden-Württemberg. The new facility enables research into new spinning processes, fiber functionalization and sustainable fibers made from biodegradable and bio-based polymers.

In the field of melt spinning, the DITF are working on several pioneering research areas, for example the development of various fibers for medical implants or fibers made from polylactide, a sustainable bio-based polyester. Other focal points include the development of flame-retardant polyamides and their processing into fibers for carpet and automotive applications as well as the development of carbon fibers from melt-spun precursors. The development of a bio-based alternative to petroleum-based polyethylene terephthalate (PET) fibers into polyethylene furanoate (PEF) fibers is also new. Bicomponent spinning technology, in which the fibers can be produced from two different components, plays a particularly important role, too.

Since polyamide (PA) and many other polymers were developed more than 85 years ago, various melt-spun fibers have revolutionized the textile world. In the field of technical textiles, they can have on a variety of functions: depending on their exact composition, they can for example be electrically conductive or luminescent. They can also show antimicrobial properties and be flame-retardant. They are suitable for lightweight construction, for medical applications or for insulating buildings.

In order to protect the environment and resources, the use of bio-based fibers will be increased in the future with a special focus on easy-to-recycle fibers. To this end, the DITF are conducting research into sustainable polyamides, polyesters and polyolefins as well as many other polymers. Many 'classic', that is, petroleum-based polymers cannot or only insufficiently be broken down into their components or recycled directly after use. An important goal of new research work is therefore to further establish systematic recycling methods to produce fibers of the highest possible quality.

For these forward-looking tasks, a bicomponent spinning plant from Oerlikon Neumag was set up and commissioned on an industrial scale at the DITF in January. The BCF process (bulk continuous filaments) allows special bundling, bulking and processing of the (multifilament) fibers. This process enables the large-scale synthesis of carpet yarns as well as staple fiber production, a unique feature in a public research institute. The system is supplemented by a so-called spinline rheometer. This allows a range of measurement-specific chemical and physical data to be recorded online and inline, which will contribute to a better understanding of fiber formation. In addition, a new compounder will be used for the development of functionalized polymers and for the energy-saving thermomechanical recycling of textile waste.

Carbios announces the publication of an article entitled “Enzymes’ power for plastics degradation” in Chemical Reviews. The article is a comprehensive and critical review of research published to date on the enzymatic degradation of all types of plastics (PET, PLA, polyolefins, polyurethanes, polyamides) and includes almost 700 references. Co-authored by biotechnology researchers from Carbios and its academic partner Toulouse Biotechnology Institute (TBI), as well as two eminent professors in polymer science from the University of Bordeaux, the work brings together expertise in the fields of enzymology, polymer science and industry in order to accelerate the transition to a circular economy for plastic.

Beyond the comprehensive bibliographical study, the authors analyzed the data to discuss the scope, limitations, challenges and opportunities of enzymatic plastic recycling with a view to developing innovations and industrial processes. The article’s standpoint and added value with regard to issues surrounding plastic pollution is its critical view on technology transfer and industrial scalability.

To read the article in Chemical Reviews, click here.

• The Borvida™ portfolio introduces sustainable base chemicals to Borealis’ range of product offering
• The range will initially be based on non-food waste biomass, and chemically-recycled waste; in the future it will also draw from atmospheric carbon capture
• The traceability of the content will be based on Mass Balance, which is ISCC PLUS certified
• This is the next step in an ambitious sustainability journey, which will see Borealis move away from traditional fossil-based feed

Borealis is strengthening its EverMinds™ circular product offering with Borvida™, a range of sustainable base chemicals.

The Borvida portfolio will offer base chemicals or cracker products (such as ethylene, propylene, butene and phenol) with ISCC Plus-certified sustainable content from Borealis sites in Finland, Sweden and Belgium. The move is part of Borealis’ broader commitment to a Future-Positive Revolution, in which the unrivalled benefits of base chemicals and polymers can be enjoyed at minimal impact to the planet.   

The portfolio will initially comprise Borvida B, from non-food waste biomass, and Borvida C, from chemically-recycled waste. In the future, the range will evolve to include Borvida A, sourced from atmospheric carbon capture. Borvida is complementary and is the building block to Bornewables™, a portfolio of polyolefins based on renewably-sourced second generation feedstocks, and Borcycle™, which offers circular polyolefins produced from mechanically- and chemically-recycled plastic waste.

Borealis produces a wide range of base chemicals for use in numerous industries based on various feedstock, such as naphtha, butane, propane and ethane. Through its olefin units (steam cracker and propane dehydrogenation), it converts these into the building blocks of the chemical industry: ethylene, propylene and C4 hydrocarbons (butylenes, ethyl tertiary-butyl ether (ETBE) and butadiene), and C5-6 hydrocarbons (pygas, phenol) among others.

The basis of the Borvida portfolio is Mass Balance, a Chain of Custody model that enables sustainable content to be tracked, traced, and verified through the entire value chain, offering sustainability-assured products from feedstock to end product. Using this model, circular alternatives can be offered in a cost-effective and environmentally-conscious way, which can be scaled up quickly without compromising on quality or efficiency.

Borvida can be used for a wide range of different polymer and chemical applications, also beyond polyolefins (PO). Non-PO polymers, such as polycarbonates, acrylonitrile butadiene styrene (ABS), super absorbant polymer (SAP) and other chemicals, are utilised for various end applications including coatings, plasticizers, adhesives, automotive, electronics, lubricants, detergents, appliances and sports equipment.

Together with key strategic partners, including Neste and Covestro, Borealis strives to provide a long-term solution in order to allow value-chain partners to meet their sustainability goals. Borvida will enable our customers to increase the sustainability of their products, keeping them ahead of forthcoming legislative changes, and meeting their customers’ demands for climate-conscious products.

Introduced on a smaller scale in early 2020, early renewable base chemicals customers include Covestro. “The use of alternative sustainable raw materials is one important pillar of our strategic ambition to become fully circular”, comments Frank Dörner, Managing Director Covestro Procurement Services GmbH & Co. KG. “The new product line is a good example for joint solutions, another strategic pillar, in order to establish new and reliable supply chains creating benefits for our customers.”

As the demand for recycled plastics grows, so does the size of the machines. This applies to the processing of polyolefins as well as to PET recycling. With its unique dimensions and production capacity, this new size of plant features a screw diameter of 280 mm, implemented for the first time in a VACUREMA® Basic 2628 T large-scale project for producing rPET pellets. EREMA has just shipped the plant to a customer in Brazil.

Up to 40,000 tonnes per year of rPET meeting the highest quality standards can now be produced. "For this purpose, we installed a screw with a length of ten meters, a diameter of 280 millimetres and a weight of 3.5 tonnes, which is the largest ever used in one of our recycling machines," explains Managing Director Michael Heitzinger. The screw was manufactured by 3S, a subsidiary of EREMA GmbH. No less impressive is the reactor of this recycling system, which, with a height of around 10 metres, is also unique and almost reaches the roof of the new production hall. 500 tonnes of input material were recycled during the test phase, which was subject to strict quality control. "The entire project was a great team effort," Heitzinger said, thanking everyone involved.

EREMA as a partner for large-scale projects
Just four years ago, the largest extrusion line supplied by EREMA was designed for a throughput of 15,000 tonnes per year. This size of plant was ordered by customers once or twice a year. In the meantime, machines like this leave the production site in Ansfelden every month. As early as 2020, EREMA proved to be a pioneer and reliable partner for implementing unique large-scale projects. That was when the food and beverage packaging manufacturer Envases Universales Mexico commissioned two VACUREMA® Basic 2625 T machines, each with a screw diameter of 250 mm and a capacity of 30,000 tonnes per year.

The Hygiene Fibers Group of Indorama Ventures (IVL) came together at the Index Show to present an all-inclusive range of recycled and biodegradable solutions for Hygiene Fiber and Nonwoven applications.

The combination of polymers, technologies, processes and global reach supported by the Hygiene Fibers Group – one of three business segments that make up Indorama Ventures – positions it within the Hygiene industry to meet increasingly challenging market demand for innovative sustainable solutions within the hygiene sector. Across the six brands and companies that make up Hygiene Fibers Group – Auriga, Avgol, FiberVisions, Indorama Asia, Trevira and Wellman International – sustainability and supporting customers to achieve circular objectives is integral to all efforts and fundamental to the ethos of the Hygiene business segment.

At the Index Show, the Hygiene Fibers Group launched CiCLO®, a textile technology which allows polyester and other synthetic materials to biodegrade like natural materials do in wastewater treatment plant sludge, sea water and landfill conditions, reducing synthetic microfiber pollution generated during washing, and minimizing plastic accumulation in landfills caused by discarded textiles.

In line with the company’s commitment to support customers with high performance products, while also reducing the impact on the environment, several of the  Hygiene Fibers brands, including Wellman International, Trevira GMBH and Auriga, have been working closely over the last 12 months with the IAM team and the CiCLO® technology. Developments have focused on PET and rPET staple fiber and filament sustainable solutions for applications where recycling is particularly challenging, such as Hygiene, Home Textiles and Automotive applications.

Strengthening the profile of biodegradable offerings within the Hygiene Fibers Group’s sustainability portfolio, Trevira introduced a new range of bicomponent fibres based on PLA and PBS (polybutylene succinate) at the Index show. Both biopolymers offer an exceptional technological opportunity in terms of environmental care and sustainability, while delivering optimum performance. Equally to PLA, PBS is recyclable and up to 100% biodegradable under industrial conditions.

Efforts towards supporting customers to achieve circular objectives are a priority within the Hygiene Fibers Group. This is reflected in the recycled fibers expertise deployed across the segment. Four Hygiene Fibers Group brands, IVL Asia, Auriga, Trevira and Wellman International offer an extensive range of 100% recycled, accredited PET fibers, across a multitude of fiber and nonwovens applications.

The development and evolution of sustainable technologies is central to activity across IVL’s Hygiene Fibers Group, with particular focus on sustainable polyolefin solutions. FiberVisions and ES-FIBERVISIONS, leading Polyolefin mono and bico fiber brands and sister company Avgol, have partnered with UK-based Polymateria to commercially harness the innovative ‘biotransformation’ technology pioneered by Polymateria. The patented technology alters the properties of polyolefins to make them biodegradable in a natural process.  Other polyolefin sustainable innovations within the Hygiene Fibers Group were featured at Index include biosurfactant and biocolourant developments being undertaken by the Avgol team with FiberVisons progressing sustainable design solutions, including lightweight, high performance, reduced carbon solutions.

• Borealis deepens partnership with innovative recycling solutions provider Renasci N.V., acquiring a 10% minority stake in the Belgium-based creator of the Smart Chain Processing (SCP) concept
• Deal supports Borealis integrated approach to achieve a true circular economy of plastics in the most eco-efficient way, as defined by its circular cascade model
• EverMinds™ in action: Game-changing collaboration to accelerate plastics circularity

Borealis announces that it has entered into a multi-dimensional partnership with Renasci N.V., a provider of innovative recycling solutions and creator of the novel Smart Chain Processing (SCP) concept. The partnership is another key enabler for Borealis to realise its ambitions to bring circular base chemicals and polyolefins to market, and to deliver on its promise to bring 350 kilotons of recycled polyolefins into circulation by 2025.

SCP concept leaves no waste behind
The SCP concept developed by Renasci is a proprietary method of maximising material recovery in order to achieve zero waste. It is unique because it enables the processing of multiple waste streams using different recycling technologies – all under one roof. At the newly-built Renasci SCP facility in Oostende, Belgium, mixed waste – plastics, metals, and biomass – is automatically selected and sorted multiple times.

After sorting, plastic waste is first mechanically recycled, and then in a second step any remaining material is chemically recycled into circular pyrolysis oil and lighter product fractions, which are used to fuel the process.

Other types of sorted waste such as metals and organic refuse are further processed using other technologies. In the end, only 5% of the original waste remains, and even this residual material is not landfilled, but used as filler in construction materials. Because of this extremely efficient way of processing, the overall CO2 footprint of these waste streams is greatly reduced – yet another advantage of the circular SCP concept.

The cascade model is Borealis’ integrated circular approach
Borealis circular cascade model sits at the heart of its ambition to achieve a truly circular economy, by combining carefully chosen technologies in a complementary and cascading way to achieve full circularity. In this way, Borealis aims to give plastic products multiple lifetimes in the most sustainable way possible. Starting with optimising product design, first for eco-efficiency, then for re-use and finally for recycling. Once a product has reached its end of life, we must close the plastics loop: first with mechanical recycling to make products with the highest possible value, quality and lowest carbon footprint; then utilising chemical recycling, as a complement to mechanical recycling, to further valorise residual streams which would otherwise go to incineration, or even worse to landfills. The valorised material from mechanical and chemical recycling is then processed with Borealis Borcycle™ recycling technology consisting of Borcycle M for mechanical recycling and Borcycle C for chemical recycling, providing high quality solutions for more sophisticated applications, such as food packaging and healthcare.

The SCP concept is aligned to Borealis’ ambition to close the loop on plastic waste as encapsulated in its circular cascade model.

Packaging solution made of 100% plastic recyclate delivers circular economy proof point
Borealis, a leading provider of innovative solutions in the fields of polyolefins, base chemicals and fertilizers, announces the successful launch of a new packaging solution produced entirely with post-consumer recycled (PCR) material. Developed in close collaboration with the German consumer and industrial goods company Henkel and two additional value chain partners, this truly sustainable packaging solution is further evidence of how mtm plastics GmbH, a member of the Borealis Group, is helping increase the circularity of plastics. The launch has significance for the consumer goods industry because the robustness of this new packaging solution provides further evidence that plastic recyclate is indeed suitable for a variety of demanding packaging applications, in this case a popular adhesive brand marketed by Henkel.

Value chain collaboration yields plastic bottle and nozzle composed of 100% PCR material
In 2016, Borealis acquired leading German recycler mtm plastics GmbH, which is now a member of the Borealis Group. By leveraging their respective areas of expertise and decades of experience as a virgin polyolefins producer and “upcycler”, respectively, Borealis and mtm plastics are exploring new growth opportunities with joint forces.

A success story originating from this exploration is a recently completed pilot project with Henkel, the global leader for adhesives, sealants and functional coatings. The companies have worked to develop a new packaging solution based on recycled material for the Made-at-Home all-purpose glue bottle and cap, which Henkel is marketing under its well-known Pattex brand.  The aim was to replace the virgin plastic material traditionally used for this packaging with a recyclate-based resin. The resin, however, had to fulfil the diverse material demands for packaging of an adhesive product.

After extensive and joint application development, a new bottle was developed with the proprietary mtm product Purpolen® PE, a high-quality polyethylene regranulate produced by mtm at its facilities in Niedergebra, Germany. Value chain partner KKT Kaller Kunststoff Technik GmbH, a plastics processor also based in Germany, manufactured the bottles. For the three separate components of the adjustable applicator nozzle, which is used for both filigree and wide-area gluing, high-quality Purpolen® PP polypropylene regranulate produced by mtm was identified as the ideal solution. German plastic components manufacturer bomo trendline Technik GmbH produced the applicator nozzles.

The new Pattex Made-at-Home packaging solution successfully passed extensive application tests, including a three-month storage test and other tests of mechanical properties. It was launched on the European market in 2018.

“Our commitment to leadership in sustainability is deeply embedded in our companies´ values,” explained Matthias Schaefer, Project Manager for Global Packaging Engineering at Henkel Adhesive Technologies. “We are at the forefront of the industry when it comes to new sustainability strategies in packaging.  Thus, we identified Pattex Made-at-Home as a candidate for exploring the use of recyclate instead of virgin plastics. This constructive collaboration with our partners proves the viability of 100% PCR material for an adhesive product like Made-at Home. It also underscores our efforts at Henkel to drive leadership in sustainability in the consumer goods sector.”

“As a virgin polyolefins producer, Borealis is thrilled to be among the pioneers in using plastic recyclate in new applications,” says Günter Stephan, Head of Borealis Circular Economy Solutions. “Even though momentum is gaining in the drive to increase the circularity of plastics, we still need to prove without a doubt within the industry that using recyclates – and even 100% PCR – is a suitable and effective option, even for demanding applications. Thanks to this successful value chain cooperation with our partners Henkel, KKT and bomo, we are giving plastics a second life and are thus one step closer to the goal of a more circular economy of plastics.”