From the Sector

The adoption of composite parts based on flax fibres by the Marine Industry continues to grow, with major OEMs as well as smaller shipyards now aiming to take advantage of the reduced carbon impact and impressive mechanical properties they can provide.

“Over the last ten or fifteen years, several innovative flax fibre boats have been built and the fibre has started to gain significant traction,” says Julie Pariset, Innovation & CSR Director at the Alliance for European Flax-Linen and Hemp. “In addition to the environmental benefits, manufacturers are realising significant technical and processing gains with flax fibre composites.”

“Flax is a very low-density fibre, with a high specific stiffness,” she explains. “It can be used to manufacture composite laminates with mechanical properties not dissimilar to typical E-glass composites and the coefficient of thermal expansion of a flax fibre epoxy part is also quite close to that of a carbon fibre part.” This allows the materials to work well in combined assemblies with carbon fibre composites and the flax parts are also highly impact resistant.

Flax fibres also provide acoustic and vibration damping in composite applications, as well as providing a warm and aesthetically pleasing appearance below decks.

ecoRacer30
As a member of the Alliance for European Flax-Linen and Hemp, Bcomp, headquartered in Fribourg, Switzerland, has this year been working with Northern Light Composites (nlcomp), based in Monfalcone, northern Italy, on the creation of what is billed as the first fully recyclable nine-metre-long sailing boat – the ecoRacer30.

The boat is based on nlcomp’s proprietary rComposite technology – a combination of thermoplastic resins and BComp’s ampliTex high-performance natural fibre reinforcement fabrics and patented powerRibs technology.

It was built in a collaborative effort with the help of Barcelona-based Magnani Yachts, which took care of the composite manufacturing, and Sangiorgio Marine, which provided technical assistance as the boat was being assembled at its shipyard in Genova, Italy.

Magnani Yachts has subsequently become the first shipyard to hold an rComposite license and others are now being encouraged to adopt the technology.

The second ecoracer30 is currently under construction and has already been sold and nlcomp is planning to build a fleet of eight of these boats in time to enter a series of regattas in the summer of 2025.

Flax 27 Daysailer
Greenboats, based in Bremen, Germany, is another specialist in building boats from natural fibre composites and has this year launched the Flax 27 daysailer.

The lower hull of this vessel is also made from Bcomp’s ampliTex technical fabrics in combination with a sandwich core of recycled PET bottles. Using a vacuum infusion process, the fibres were integrated with a plant-based epoxy resin in order to further reduce the CO₂ footprint of the vessel.

The light structure and modern shapes of the lower hull of the boat result in very fast, sharp and agile handling on the water.

Greenboats has also recently announced significant new backing from alliance member Groupe Depestele, which manages 13,000 hectares of flax land in Normandy, France.

Blue Nomad
A project in Switzerland has meanwhile proposed the use of flax fibre composites in solar-powered habitats designed for comfortable living on the oceans – as the world grapples with the frightening implications of climate change and rising sea levels.

As envisaged by students from Institut auf dem Rosenberg in St Gallen, Switzerland working with Denmark-based SAGA Space Architects, Blue Nomad structures would form modular blocks to establish large communities and oceanic farms.
 

BTMA member Tatham has just delivered an advanced industrial hemp processing line to a major customer in Turkey and had many fruitful discussions about its machinery for the processing of natural staple fibres at the recent ITMA 2023 held in Milan from June 8-14.

The Bradford, UK-based company continues to equip mills around the world with staple fibre spinning and nonwoven technologies for manufacturing a wide range of products, while its TS system for drives and controls is suitable for retrofitting to all OEM textile machines, to provide user-friendly control systems with complete synchronisation and significant energy savings.

“We are currently fielding a lot of enquiries for technologies for the decortication, fibre opening and fabric forming of hemp,” said Tatham director Tim Porritt. “This is being driven by the sustainability of the fibre and concerns over climate change as brands seek solutions to meet their sustainability goals. As a result, there has been an explosion in the interest in hemp production, from farmers through to fibre production, and a wide range of new potential end-uses are being explored.”

Tatham offers a complete ‘Field to Fibre’ service for industrial hemp fibre production and its decortication and cleaning process has a gentle opening action to maintain the fibre length, to make it suitable for subsequent processing.

• Sustainability Report 2021 combines financial and non-financial performance indicators
• 2011-2021: 60% reduction in greenhouse gas emissions per metric ton produced. 51.7% renewable source energy achieved
• ESG criteria (environmental impact (E), social values (S), organizational governance (G)) determine sustainability strategy

The new RadiciGroup Sustainability Report has been published. With the goal of continuous improvement, the 2021 report has a broader reporting boundary compared to prior years and takes into consideration all the Group companies, including sales and service companies. Over 30 sites located across Asia, North America, South America and Europe have provided their 2021 data on economic, social and environmental performance.

Not only indicators of a financial nature but also measures of environmental impact (E), social values (S) and good organizational governance (G): the latter so-called ESG criteria have become a priority for RadiciGroup, which is preparing for the new European Union non-financial reporting directive in order to contribute to the transition towards a fully sustainable economic system and increase the value of its companies.

On the environmental front, the themes of climate change and decarbonization are RadiciGroup priorities and part of a policy aimed at the uncoupling of growth and resource usage. The Group undertakes to lower emissions from production and choose limited-impact energy sources. This commitment is confirmed by the numbers: in the 2011-2021 period, total emissions per metric ton produced were reduced by 60%, while renewable source energy used by the Group reached 51.7%. Specific investments to decrease environmental impact are ongoing: in 2021, EUR 3.1 million were allocated to introduce best available techniques and improve emissions abatement and energy efficiency.

RadiciGroup promotes professional growth by valuing competence and investment in training: Group training hours once again rose after the pandemic period from 36,000 hours in 2020 to 46,000 hours in 2021. The training method was often a hybrid, taking advantage of aspects experimented with during the pandemic, that is, less traveling and use of facilities in favour of higher groupwide attendance, without the need for participation limits. Fifty-five percent of total training hours was dedicated to health and safety, which has yielded positive results based on the related indicators.

Angelo Radici, president of RadiciGroup: “Today, the United Nations 2030 Agenda for Sustainable Development is our main guideline on sustainability issues. It shows us an ambitious scenario and urges us to confront a multitude of challenges that affect our enterprise from every point of view. We try to be quick to react and tenacious, staying faithful to our roots and our style, but expanding our perspective to become increasingly more competitive and proactive in the businesses we are engaged in. From the viewpoint of achieving less environmental impact in the future, we propose to be an enabler and facilitator for our stakeholders on themes such as the circular economy, where we see ourselves as protagonists in ecodesign and recycling, as well as innovation, which we put at the service of anyone who is processing and using our products, so as to offer real sustainability solutions together.”

Global energy consumption reached a record high in 2019, following a 40-year trend for rapidly increasing energy demand that was only halted by the Coronavirus pandemic. It’s estimated that more than 80 % of this energy is still generated from fossil fuels that produce CO2 emissions and contribute to climate change. Renewable energy offers a solution to this problem, but saving energy whenever possible is an even more effective approach. That are the motives for Trützschler to develop the intelligent card TC 19i, which sets a new benchmark for energy-efficient carding.

The intelligent Trützschler card TC 19i features the unique T-GO gap optimizer, which continuously and automatically monitors and adjusts the carding gap to an ideal position during production. Innovative drive- and air technology further reduce energy consumption of the TC 19i.

The most energy-intensive elements in a carding machine are the drive, the dust suction process and the compressed air system. Permanent suction is needed to remove dust and cotton waste in key places. Smart optimization of these areas has made the intelligent card TC 19i a benchmark for energy efficiency in carding because it uses less electricity, lower suction pressure and less compressed air than other machines, while providing the highest production rates currently available on the market.

In a head-to-head comparison between the TC 19i and a high-performance card from a competitor, the TC 19i consumed at least 10 % less energy per kilogram of material produced when manufacturing rotor yarn from a cotton and cotton waste mix. The compared energy values included electric power consumption and energy required for suction and compressed air and were measured in both cards at the same production of 180 kg/h. A 10 % reduction in energy per kilogram of sliver produced, as proven here by TC 19i, can have a significant impact on a spinning mill’s profitability; annual savings worth a five-digit sum are frequently possible, depending on factors such as the output of the mill. The customer trial also showed TC 19i’s excellent reliability at the customer’s usual production rate of 180 kg/h, and even demonstrated stable performance at 300 kg/h in the same application. Because the TC 19i with T-GO gap optimizer realizes maximum production rates at no compromise in quality, manufacturers can reduce their energy demand and investment costs drastically: Less machines are needed to achieve the desired output, and energy consumption per production is reduced.

This improvement was made possible by a long and sometimes challenging innovation process involving mathematical models of air flows, as well as flow simulations and prototypes. By combining the final flowoptimized parts in the TC 19i, Trützschler’s experts have developed a card that operates with suction pressure of just -740 Pa and with an air requirement of only 4200 m³/h. This translates into 40 % less energy demand for air technology compared to the latest high-performance competitor model.