From the Sector

Increasing energy and resource efficiency in the construction sector will be key to the EU’s ambition of achieving climate neutrality by 2050. By enabling the manufacture of strong, durable and lightweight products, composite materials can help the construction sector improve its environmental sustainability, as well as reduce total lifecycle costs. The latest EPTA industry briefing, Pultruded composites contribute to a more sustainable future for construction, discusses how pultruded composites answer the need for materials offering high performance, faster installation, corrosion resistance and low maintenance.

The report is available to download from the EPTA website.

The future of construction
As one of the largest global users of energy and raw materials, the construction industry is under immense pressure to improve its sustainability. At the same time, it must respond to demands for improved performance and reduced total cost of ownership. New materials will be needed to minimise the use of natural resources, enable a reduction of carbon footprint and facilitate circular economy practices. Choosing the optimum materials required for durability throughout the lifecycle will be increasingly important. A shift to off-site production is also forecast, where factory-controlled environments and automated processes can improve quality control, lower waste, and reduce work on site.

Lightweight pultruded parts can be pre-assembled into modules or complete structures in the factory for faster installation on site. Lightweight profiles lower energy use during transportation and installation, and a longer service life combined with minimal maintenance can deliver a reduced through-life carbon footprint. Pultruded parts such as profiles, gratings, beams, tubes and planks are increasingly found in a range of building, construction and infrastructure applications. Examples include bridge decks, fencing, stairs and handrails, train platforms, cladding, utility poles, modular building concepts, and window frames.

One application offering large growth potential for composites is bridges. Composite bridges are being designed to provide a service life of 100 years and unlike steel bridges do not require regular repainting to protect them from corrosion. Over recent years, pultruded glass fibre composite has become a highly popular choice for pedestrian and cycle bridges. Pre-fabricated ‘easy fit’ bridge decking planks, pre-assembled bridge modules and complete bridge ‘kits’ are now available. Corrosion-resistant composite bridges are ideal for use near water or on the coast, and in remote locations where regular maintenance operations would be difficult. A composite bridge can deliver the same performance as a steel structure with a weight saving of up to 50% or more. This enables more streamlined bridge designs which require less substantial supporting structures and foundations, greatly reducing consumption of materials and energy. Lightweight also results in easier logistics and simplified installation. Pultruded are more easily transported to the construction site, with lower fuel consumption, and easier to move on site, often reducing labour requirements and the capacity of lifting equipment.

A lifecycle approach
As the construction industry looks to the future, the environmental and economic benefits of composite materials linked to easier logistics and installation, durability and low maintenance are becoming increasingly valued. More projects are demonstrating the benefits of composite materials and standards covering the design, fabrication and installation of pultruded profiles are making it easier for the construction industry to use them. With ongoing development and collaboration, pultrusion has the potential to contribute to a more sustainable future for construction and many other industries. EPTA will continue to promote the advancement of pultrusion technology and its applications and foster sustainable practices within the industry.

• conceptual and commercial garments presented at exhibition in London

After two years of research Mistra Future Fashion is honoured to present, in collaboration with Centre for Circular Design at University of the Arts London and Filippa K, an exhibition pushing the limits of ‘fast’ and ‘slow’ fashion. Started in 2017, the industry-embedded project Circular Design Speeds takes a unique systemic approach, showcasing what could be accomplished using existing value chains as well as what the future of sustainable fashion holds. Ground-breaking textile research from University of the Arts London is questioning normative use and design of garments in creating prototypes to be worn across a spectrum of 24 hours to 50 years. By implementing research into existing value chains, Filippa K have produced a coat that is 100% recycled and recyclable, as well as a concept dress that is 100% bio-based and biodegradable. The research results and garments will be presented at the launch event at the University of the Arts London, on November 23rd and open to public on the 24th and 25th of November.

On Friday November 23rd the exhibition Disrupting Patterns: Designing for Circular Speeds opens up at University of the Arts London. The exhibition is the results of a two-year research project called Circular Design Speeds aiming at pushing the limits of ‘fast’ and ‘slow’ fashion by testing new concepts for sustainable design in an industry setting. On display are exploratory prototypes, as well as commercial garments produced by industry partner Filippa K using existing value chains. In addition, research results on innovative materials, consumer acceptance, composting studies and Life Cycle Assessments are presented. The aim of this project is to implement research results in a real fashion industry context, focusing on speed of use and maximising fabric value retention in products.

The Service Shirt developed by Professor Rebecca Earley is designed to last for over 50 years. The concept garment explores the multiple complexities, challenges and opportunities associated with design for circular business models in extended use contexts. The Service Shirt was designed as a ‘deliberate extreme’ to have a total lifecycle of 50 years. This lifecycle includes in-house and external remanufacturing processes, as well as various use cycles – often moving between single ownership and rental and sharing contexts. It becomes the lining for a jacket and then crafted in to fashion accessories, before finally being chemically regenerated in the year 2068.

On the opposite side of the spectrum the Fast-Forward concept, developed by Prof Kay Politowicz and Dr Kate Goldsworthy, explores alternative modes of production and use for a sustainable ‘fast-fashion’ application. Advantages with regards to climate impact are enabled through lighter material choices, nonwoven fabric production, no launder, clear routes to recovery and redistributed manufacturing systems. A sliding scale of ‘speed’ from ultra-fast forward through to a more widely accepted length of use, with adaptations to production processes and end of life, is presented. The prototypes are made from a new bio-based nonwoven material co-developed with Dr Hjalmar Granberg at RISE Research Institute of Sweden & University of the Arts London. The composition of the paper is a mix of cellulose pulp and bio-based PLA fibre, making the garment 100% biodegradable or recyclable in existing paper recycling systems.

Working closely with industry partner Filippa K made commercial testing possible. By implementing research into existing value chains, Filippa K was able to produce a coat that is 100% recycled and recyclable, as well as a concept dress that is 100% bio-based and biodegradable. The garments are a part of Filippa K’s Front Runner series and will be available in selected stores on November 26th. With a focus on products’ length of use and maximizing fabric value retention, Filippa K are dedicated to becoming fully circular by 2030.

“Being part of the fashion industry comes with many challenges, especially when considering the fact that we are the second most polluting industry after oil. Our industry needs to change and we believe adapting to circular models, like nature’s ecosystem, is one important solution. We want to be able to offer beautiful clothing and to make business within the planetary boundaries.”
- Elin Larsson, Sustainability Director, Filippa K

To validate the design research presented, a Life Cycle Assessment was performed on the prototypes. Mistra Future Fashion affiliated Dr. Greg Peters, Chalmers University of Technology, together with additional LCA Researchers at RISE, conclude that the production of fibres and fabrics are the main processes impacting the environment during the garment life cycles. Therefore, to extend the lifetime of existing garments and design for re-use, as done in the Service Shirt, is indeed the superior alternative compared to a reference garment.

“Compared with garments of the same mass, the extended life garments represent a large improvement in environmental performance over the reference garments, outperforming the reference garments in all effect categories. This superiority is primarily a consequence of avoiding garment production via reprinting and reassembly of the initial garment to extend its useful life.”
- Dr Greg Peters, LCA Researcher at Chalmers University of Technology

Another way to circumvent the impacts of fast fashion is to develop materials with considerably lower impacts during production, and which also avoid the barriers to recycling faced by conventional garments. Instead of hinder consumers from buying new, the act of acquiring a new garment could in fact be sustainable. The paper-based short life garments considered in this assessment show considerable impact savings when compare to the benchmark garment. Dr. Peters says,

“The paper-based garments benefit from the lower impacts of the material (fibre production, spinning and knitting) compared with conventional cotton, from their relatively light weight and also on account of the lower impacts in garment production and use.”