Sesame Summit 2026 – application open

Sustainability, AI, and Sports! The 411 on JEC World 2024

JEC World 2024 wrapped up on March 7th and it was yet another successful three days for the composite and advanced materials industry! As the premier event for composites, the event welcomed more than 1,300 exhibitors and 43,500 attendees over the course of three days. Recognized as the “festival of composites,” JEC World caters to the entire value chain– supplying endless and enticing innovation to all. 

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Source: JEC World

This year’s focus was on sustainable solutions, developing new processes and products, and the integration of advanced technology to create lighter, smarter, and stronger composites for every purpose across all industries. 

The main themes were sustainability, new materials, and imaginative manufacturing processes through cutting-edge technology. While the startups’ products and processes are applicable to most industries, the focal point remains automotive, aerospace, sport, and construction.

QUICK STATS:

  • 1,300 exhibitors 
  • 43,500 attendees 
  • 49 countries represented 
  • 27 international pavilions
  • 20 startup booster finalists

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Highlights

Building a sustainable future: Sustainability was the main topic at JEC from startups to large corporations. All companies from startups to industry experts are focused on innovative sustainable solutions and ensuring that all future development is executed with sustainability as a premier factor. While lightweight materials are the standard of the industry, companies are shifting their focus to high rate production systems, circular economy integration, and developing advanced thermoplastics and hybrid materials. Beyond the material processes themselves, the lighter and sustainable composites lead towards energy-efficient travel, transportation, and construction. 

Digitally driven development: The integration of digital technologies, such as AI-driven simulations and tools, continues to revolutionize the processes and manufacturing systems of composites. Automation focus, such as robots,  were front and center at countless booths across all halls. The rapidly developing process automation was demoed throughout the halls– the machinery are able to laminate and lay fibers with precision and accuracy. 

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Sports Summit: Developed in partnership with Global Sports Week, the JEC Sports Summit program addressed the close connection between composite and advanced materials and the sports industry. As Paris prepares to host the 2024 Olympic Games this upcoming summer, the Sports Summit emphasized how composite material are at the core of performance– from sailing to cycling to skiing. Some highlights included an address from Cedric Roussel, Ministerial Delegate Sports Economy 2024OPG, where he discussed France’s goals for the 2024 Games and how the Games serve as an economic catalyst for sustainability and innovation. Other key panel topics were composites in Paralympic sport equipment and a focus on the revolutionary adoption of foils in competitive water sports. 

JEC Startup Booster

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JEC Startup Booster: For Team Sesamers, the focus was on the JEC Startup Booster, the premier startup competition. The 20 finalists set up shop in the Startup Booster Village, the central hub for startups, over the course of three days. Each company had their own table where they were able to display and demo their product, host meetings with potential investors or partners, and network within the startup community. The startup finalists embodied a wide array of innovative possibilities and solutions in the composite industry across the two categories of “Products & Materials” and “Process, Manufacturing, & Equipment.” 

If you missed the finalist announcement earlier this year, here is a quick overview of the 20 finalists. The startups, hailing from 11 different countries, all pitched 20 unique startups with a strong emphasis on bio-sourced materials, cutting-edge technology and products, and solutions to the composite industry.  

Products & Materials: 

  • BioHalo (Denmark)
  • BioTwin (United Kingdom)
  • Carbocon (Germany)
  • Cellexcel (United Kingdom) 
  • High Temperature Material Systems (United Kingdom)
  • Nano Electronics (South Korea)
  • RECARBON (Italy)
  • Sargassum Eco Lumber (United States)
  • SpacEngineer (Portugal)
  • ZILA BioWorks (United States)

Process, Manufacturing, & Equipment:

  • CarboScreen (Germany)
  • Componous (Greece)
  • Eddytec (The Netherlands)
  • Elementag (Italy)
  • Fiberior (Germany)
  • Holy Technologies (Germany)
  • MOB-E-SCRAP (France)
  • REINFORCE3D (Spain)
  • TechnoCarbon Technologies (France)
  • 3P.COM (South Korea)

This year’s jury panel consisted of 5 members– both new and returning members.

On Day 1 of JEC, there were two pitching sessions held throughout the day, moderated by Peter Hapwood; in the morning, we heard from the 10 startups in the “Products & Materials” category, and in the afternoon, the other ten in “Process, Manufacturing, & Equipment.” Out of the 20 finalists, three winners were selected—one in each category and one overall award for the most sustainable solution.

On Day 2 of JEC, the startups participated in “speed sessions” with industry experts and investors. During these rapidfire meetings, startups are able to pitch their company to experts within their specific field or discuss their startup with a new set of eyes and ears. As potential investors, the experts are able to network with a wide range of startups, with the strong possibility of finding a feature partner or expanding their portfolio.   

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After jury deliberations at the Owens Corning booth, the jury carefully and thoroughly deliberated the finalists to determine this year’s winners. Selecting the winners was a close call, but the three winners demonstrate the core ethos of the competition– exhibiting ingenuity, innovation, and expertise in their five-minute pitch.

The 2024 Winners:

  1. Zila Bioworks – “Products & Materials”
  2. TechnoCarbon Technologies – “Process, Manufacturing, & Equipment”
  3. BioHalo – “Sustainability”

Looking to 2025!

For those interested in applying to the JEC Startup Booster 2025, be sure to subscribe to our newsletter, where we will announce the application process when it opens.  

Want more from Sesamers?

We have several podcast episodes coming out soon from JEC World with startup founders and other industry experts. Be sure to follow us on Instagram, LinkedIn, and X to be the first to listen to the new episodes.

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London-based AI laboratory Ineffable Intelligence has emerged from stealth with a $1.1 billion seed round at a $5.1 billion post-money valuation, the company confirmed on 27 April 2026. The financing is the largest seed round ever raised by a European company and one of the largest first-money-in rounds in the global history of artificial intelligence. The round was co-led by Sequoia Capital and Lightspeed Venture Partners. Participating investors included Nvidia, DST Global, Index Ventures, Google, and the UK Sovereign AI Fund, the British government’s recently established vehicle for backing strategic AI capacity on home soil. A bet on a different path to general intelligence Ineffable Intelligence was founded in 2025 by David Silver, the former Vice President of Reinforcement Learning at Google DeepMind and the principal architect of AlphaGo, AlphaZero and AlphaStar. He is joined by three further DeepMind alumni: Wojciech Czarnecki, Lasse Espeholt and Junhyuk Oh. All four have spent the past decade at the frontier of reinforcement learning research, the discipline behind some of the most consequential demonstrations of machine learning over the past ten years. The company describes its objective as building a “superlearner” — an AI system capable of acquiring knowledge directly from its own experience rather than from human-generated text or imagery. “Our mission is to make first contact with superintelligence,” Silver said in a statement accompanying the launch. “We are creating a superlearner that discovers all knowledge from its own experience, from elementary motor skills through to profound intellectual breakthroughs.” The framing is a deliberate departure from the dominant industry trajectory. Most leading AI laboratories, including OpenAI, Anthropic and Google DeepMind itself, have built large language models trained primarily on the corpus of the internet, then refined that training with human feedback. Ineffable’s wager is that the marginal returns on scaling text-based pretraining are diminishing and that the next leap in capability will come from agents that learn endlessly from the consequences of their own actions, in much the same way AlphaZero learnt the game of Go without studying any human matches. Why $1.1 billion at seed The size of the round is unusual even by the inflated standards of the 2026 AI capital cycle. Two factors appear to explain it. First, frontier reinforcement learning at the scale Ineffable describes is computationally extraordinarily expensive: the company will need to operate vast simulation environments and train very large models against them, an undertaking that consumes capital at a rate closer to physical R&D than to traditional software. Second, the round signals a strategic move by Europe’s investor and policy ecosystems to retain the most ambitious AI researchers on the continent. The presence of the UK Sovereign AI Fund alongside Sequoia, Lightspeed and Nvidia is the clearest expression of that intent. The British government has publicly framed the investment as a bet on breakthrough AI that “can discover new knowledge”, positioning the country as a willing co-investor in domestic frontier laboratories. For Ineffable, the implication is access not only to capital but to compute, regulatory engagement and the still-resilient academic talent base around UCL, Oxford, Cambridge and Imperial. Founder pledge of historic scale Alongside the funding announcement, Silver disclosed that he is committing 100 per cent of any personal proceeds from his Ineffable equity to charity via the Founders Pledge network — described by the organisation as the largest pledge in its history. At the round’s $5.1 billion valuation, that commitment could ultimately exceed several billion dollars if the company succeeds. It is a meaningful gesture in a sector where the reputational stakes around concentrated AI wealth are escalating, and one likely to be referenced in subsequent founder-led commitments. Implications for the European AI landscape Ineffable’s emergence reshapes the European AI map in three concrete ways. It establishes London as the home of the continent’s largest-ever seed-stage company, complicating Paris’s recent narrative of frontier-AI primacy after Mistral’s earlier rounds. It validates a thesis — that reinforcement learning, not transformer scaling, is the next frontier — that has lately been losing capital share to language-model incumbents. And it confirms that the UK government is now willing to act as a balance-sheet co-investor in domestic AI laboratories, a posture much closer to the French model than to the predominantly grant-based regimes elsewhere in Europe. The execution risk is non-trivial. Reinforcement learning at frontier scale has historically required years of careful environment design before producing competitive systems, and Ineffable’s “first contact” framing sets a high bar against which it will be judged. But for now, with a billion dollars on the balance sheet, four of the discipline’s most accomplished researchers in the founding team and a sovereign co-investor at its back, Ineffable Intelligence is the most heavily resourced new entrant in the European AI cycle. Sesamers covers European fundraising rounds across deeptech, fintech and AI. Source: tech.eu.

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