The new headquarters of the Group, which has a history of 165 years of steady growth, serves the business units HF TireTech Group and HF ToolTech Group.

The designing of the new office is tuned to the needs of the Group’s forward march. Direct access from the office facilities to the assembly hall and machine testing area brings all fields of work close together and ensures optimised communication. The established and well proven production unit in Belišće, Croatia remains. Continuous investments in logistics, painting, warehousing and machining under highest economic aspects guarantee state of the art manufacturing.

Back on track

The COVID 19 pandemic and the global lockdown that came with it saw HF being tested hard for its resilience and the capability to help its partners put their production process back on track through its engineering and other services.

“For HF, partnership means to support its valued customers with benefits that will help to keep their production back on track,” says HF TireTech Group Managing Director Dr. Joern Seevers.

HF´s benefits & services for the tyre production are many:

• Technical support for restarting the HF Curing Presses

• Inspection and readjustment of mechanical settings

• Inspection of safety-related components

• Performance check and functional analysis of hydraulic/pneumatic systems

• Software check-up and functionality test

• Close coordination and supply of spare parts

• Individual training for technicians and service people for a smooth and efficient production ramp-up; trainings can take place on customers site or in Hamburg at the Group’s testing press. Virtual support is also available

Dr. Seevers said: “Together with our customers we analyse production processes, optimise, adjust to changed situations, look behind the production and develop new strategies to achieve more flexibility, increase quality, reduce costs and raw material - get into action with a higher level in automation and smart retrofitting and be ready for sustainable tyre production.”

Tandem Mixer technology:

HF takes it to the next level

HF Mixing Group is supplying Tandem Mixers for more than 15 years and has kicked off a revolution in mixing since then. The concept appears to be simple, but all those years of experience have shown that the highest degree of machine engineering has to be combined with extensive process know how to make a Tandem Mixer successful. And a mixing line is only successful if the calculated output and productivity is achieved – combined with a reliability which enables stable production for years.

As matter of fact to develop the process to mix on a Tandem Mixer takes some time and efforts – not to forget the technological know-how of the mixing process itself. HF offers the possibility to accompany this development by offering extensive trials and engineering studies – to shorten the time from ordering a machine up to the point of running in full production.

The goal of a Tandem Mixer is to reduce the specific cost of mixing a compound – on many occasions, HF has proven that overall cost reductions of 15% can be achieved compared to standard lines with a single mixer. This, in between other, is achieved by reducing the mixing steps for a PCR compound from 2,5 to 1,5 steps.

But productivity is not the only driving factor to invest in a Tandem Line – the quality of the compound overall and specifically constant and repeatable mixing of modern compounds is to be ensured. To optimise dispersion, distribution, temperature control and process stability makes a significant difference in today’s production of more complex compound recipes. The intermeshing mixers produced by HF and used in a Tandem Line guarantee to meet these requirements more than any other mixers on the market.

Experiences have shown that no compromise on quality can be made – and HF is supporting this approach with delivering a control system for Tandem Lines which enables their customers to not only run the machine efficiently but also uses online condition monitoring to always reflect on a reliable compound quality which is repeatable.

HF emphasises on result driven production concepts for its customers – further innovations in terms of integrating industry 4.0 solutions to the mixing process are on its way and the focus is clear: Intelligent machines will integrate new digital solutions into the mixing process and will ensure to meet the expectations of the future.

Brownfield projects

The COVID pandemic put a stronger focus on replacing existing machines instead of adding new capacities to a production plant. Also, productivity as well as sustainability aspects are driving many tyre companies to have a closer look to the installed base.

But inspecting a mixing line which has run for more than 15 years (or sometimes even 25 years) brings to light what challenges may come up if this line will be replaced by a new one. Output values need to be increased, a new mixer technology should improve the quality of compounds, modern automation solutions should support the daily production procedures and increase process stability – many more requirements should be met. One of the largest challenges is limited space when looking at an upgrade of machinery.

Not only the pure space but also intralogistics within a mixing line can create headache – from upstream equipment feeding a mixer all the way to downstream machinery processing the batch further – many modern solutions can be used today but looking at the available space installing them is the challenge.

With a clear focus on such brownfield projects, HF has managed several conversions from old to new with unmatched success. A key in such projects is the planning and pre-engineering process. Starting with an inspection of not only the mixer but all surrounding factors in the building – considering also the material flow – and then continuing with a 3D- scan of the existing equipment including pipe and cabling routing the basis for planning can be laid. Supported by this 3D-scan HF engineers plan and design with 3D models the complete mixing mill room.

By keeping the existing machinery as the base layer and inserting new equipment in an over-lay collisions of steel constructions, limitations in space and optimised pipe and cable routing can be identified. Furthermore, an improved process flow chart is the basis of planning material flow, work processes and even manpower to operate the new mixing line. Finally, new controls and automation solutions – on the basis of industry 4.0 – will improve operating and monitoring the equipment.

One of the largest benefits using HF’s Pre-Engineering is shortening the planning and execution time – and last but not least the reduction of financial funds is possible by starting up the new line much quicker compared to the conversion of lines in earlier years.

Safety first

Supporting all major tyre manufacturers with mixing technology HF constantly strives for improving operational procedures in the mixing mill room. When it came apparent that the variety of compounds increased more and more – driven by many more types and technologies in tyres today – the changeover times from one recipe to the other was put in the focus of operational optimisation. Not only flexible automation solutions are required but also quick availability of the mechanical equipment after the last batch of the current recipe was dispatched. In between other HF identified the cleaning of the mixing chamber as a critical action during changeover in two aspects: First it needs to be safe for the maintenance personal to enter the mixing chamber and secondly time can be saved if the access to the chamber can be optimized.

In order to meet both requirements HF’s engineers designed a maintenance box, the so-called mBox©, which is mechanically integrated directly underneath the mixer – combining the mixer with the chute of a dump extruder for example.

In the moment the mixing line is switched to cleaning mode and all movements of parts are blocked a moveable platform – the floor of the maintenance box – is inserted horizontally underneath the mixer. A door of the box can be opened, and maintenance personnel can enter the box safe and secure, standing underneath the mixer with easy access to the mixing chamber.

Besides the safe working environment customers from HF have noticed saving time and having the opportunity of even inspecting the mixing chamber easier and more frequent during a changeover.

Especially in new installations of a mixing line the mBox© can be integrated in the design of the line easily and right from the start – benefitting the safety and operation of the line daily.

HF Screw Presses

The production of screw presses is one of HF`s core competences for decades. The screw press has gained recognition during its affiliation with KRUPP. Thus, the presses operate all over the world and more than 2.500 presses are installed in various industries for example the edible oil industry, biomass technology and rendering. And, most interesting for the tyre industry, the presses accomplish benchmarking results in the dewatering of natural and synthetic caoutchouc. As a more efficient and space saving solution instead of band dryer systems or similar the screw press has its strong eligibility in dewatering process.

HF Curemaster

HF brought the first hydraulic column type curing press to the tyre industry in 1997. Since then, it continued to develop this product to meet the demanding requirements of its customers.

The HF Curemaster was launched two years ago and since then the patented truck tyre curing press has been successfully installed in multiple locations and in efficient operation. The press provides a flexible and compact footprint, making it possible to replace older presses with potentially more presses per existing trench.

The HF Curemaster also focuses on optimising energy efficiency to ensure the lowest total cost of ownership in the curing plant. The HF Curemaster´s hood design incorporates insulation inside the hood to provides the best insulation effect. In addition, the HF Curemaster provides an extremely fast cycle time to minimise the overall amount of heat loss during the open and close sequence of the press.

HF PCR Design

Delivering for a new greenfield plant is relatively straightforward. However, HF understands the important need of the replacement market as well. It is important to be flexible to meet all the varying trench layouts (pit, shelf, pitless, and so on). Equally important is the need to be able to replace existing 42” – 45” old mechanical presses with 48” – 52” modern presses in order to meet the growing demand for larger tyre sizes.

All replacement projects are analysed carefully together with customers. Attention is paid closely to all details related to operation, maintenance access, mould & bladder change requirements as well as all local safety regulations. HF´s long experience with curing presses provides a large variety of modular options to be used for finding the optimised fit for each specific request.

HF Stack Passenger Car Inflator (PCI)

The requirement for post cured tyres continues to grow in the market and HF has designed a simple and compact solution that can be incorporated in all HF presses as well as behind most all existing older presses.

The patented HF Stack PCI design allows for the PCI to be integrated into even the tightest footprints. This solution eliminates any movement or rotations of the PCI body itself and greatly reduces the amount of moving mechanical components and maintenance.

HF Digitalisation

HF recognises the important trend of digitalisation for the tyre manufacturers and has developed reliable, customised software solutions for machine data communication between machine control and customer IT systems. The main steps were to focus on MES, SCADA and Recipe Management interfaces.

HF Smart Curing enables customers to get started quickly and effectively with a future-oriented digitisation solution. The main advantage in this case is that software for machine data acquisition is supplied directly by the supplier and not by IT service providers.

OPC server technology and efficient network solutions are tailored to the machine enable secure data acquisition. This software can provide feedback in regard to condition monitoring, diagnostic function, machine services, energy monitoring and remote service.

The benefit of connecting your equipment with digitalised solutions clearly accelerates a target-oriented development and improves the Total Cost of Ownership of the equipment.

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Pirelli has been reconfirmed as the global leader in the Auto Components and Automobiles sectors within the Dow Jones Best‑in‑Class World and Europe indices, formerly known as the Dow Jones Sustainability Indices. The tyre manufacturer achieved this distinction based on its performance in the 2025 S&P Global Corporate Sustainability Assessment.

Pirelli, which remains the only tyre company featured in both the World and Europe indices, secured a score of 86 points. This result is the highest among all companies in both the Auto Components and Automobiles categories and far exceeds the sector averages of 34 points for auto components and 37 points for automobiles.

The company earned maximum scores across multiple criteria, including Business Ethics, commitment to Human Rights, Occupational Health and Safety programmes, supply chain ESG assessment and environmental management related to water, waste and energy. Additional top scores were recorded for biodiversity protection and Pirelli’s verified pathway towards its Net Zero by 2040 target, validated by the Science Based Targets initiative.

This latest recognition follows Pirelli’s reconfirmation in February 2026 as the only tyre manufacturer worldwide included in the Top 1 percent of the S&P Global Sustainability Yearbook 2026. Originally launched in 1999 as the first global best‑in‑class sustainability benchmark series, the S&P Dow Jones indices now cover 62 business sectors and assess more than 12,000 companies annually across regional and global levels.

Giovanni Tronchetti Provera, Executive Vice President Sustainability, New Mobility and Motorsport of Pirelli, said, “The confirmation of Pirelli at the top of the Dow Jones Best‑in‑Class indices is a testament to the solidity of a journey built on industrial innovation and responsibility across the entire value chain. This approach is embedded in our strategic and operational decisions, from technology to processes, from supplier management to the protection of people and contributes to strengthening the Group’s competitiveness while supporting its long‑term growth.”

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Shalva Akhvlediani, the Executive Director of Tegeta Green Planet, appeared on Radio Ucnobi on 15 April 2026, alongside Giorgi Guliashvili, Chairman of Wasteless. The broadcast focused on transforming waste into a resource, a key principle of the modern circular economy.

The discussion highlighted the necessity of properly managing automotive waste, especially end-of-life tyres, while addressing environmental and economic challenges in Georgia and worldwide. The guests argued that tyres should no longer be viewed as purely hazardous waste, as modern technologies and circular economy models can turn them into valuable materials for various industries.

A significant point of interest was rubber-modified asphalt. The speakers reviewed international practices and the potential for adopting this technology in Georgia, noting its proven durability, noise reduction benefits and ability to enhance road infrastructure while minimising environmental harm. The conversation also acknowledged local progress in sustainable road development.

As a follow-up, the guests referenced the GRAS 2026 conference, held in Tbilisi on 16 March 2026 and organised by Tegeta Green Planet and Wasteless. The event united local and international experts, private sector leaders and policymakers to discuss innovative technologies and circular economy applications. The conference served as a key platform for environmental awareness, demonstrating that the circular economy represents both an ecological duty and a basis for new economic opportunities and sustainable growth.

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DUNLOP’s natural rubber procurement subsidiary, SUMITOMO RUBBER SINGAPORE PTE. LTD., which operates as part of the supply chain partner Halcyon Agri Corporation Ltd., has been leading a major sustainability effort in Indonesia. Together with its Indonesian subsidiary PT Hok Tong, the Singapore-based producer and distributor launched the Traceability and Transparency Pilot Project, also known as the SNR Project, in South Sumatra in 2022. The initiative was designed to directly support smallholder natural rubber farmers in the region.

The project has successfully raised natural rubber productivity while simultaneously improving the earnings of local farmers. By enabling growers to achieve a stable income on existing farmland, the initiative has reduced pressure to expand agricultural areas. This outcome has contributed meaningfully to curbing deforestation that would otherwise result from farm expansion, demonstrating positive environmental and economic results for the DUNLOP Group’s sustainable procurement efforts.

Natural capital, including natural rubber, is recognised by the DUNLOP Group as an essential foundation for its sustainable business activities. Following the recommendations of the Taskforce on Nature-related Financial Disclosures, the group has assessed its dependence on and impact upon natural capital, along with associated risks and opportunities. Continuing to use natural rubber as a sustainable resource has been identified as a major management objective for the future.

Most natural rubber production is carried out by smallholders rather than large plantations, and insufficient knowledge of cultivation and processing methods can lead to lower productivity and unstable incomes. These factors also risk driving farm expansion and deforestation, as well as creating social issues in production areas. To address these challenges, the DUNLOP Group undertakes support activities aimed at improving smallholder productivity and living standards.

In collaboration with Halcyon Agri, support focused on enhancing traceability, transparency and producer welfare in South Sumatra. Using RubberWay, a risk assessment tool for natural rubber, the project identified risks related to wage levels and agricultural practices. Over roughly three years from 2022 to 2025, including a pandemic-related suspension, more than 1,000 farmers received assistance through field investigations, raw material distribution mapping, productivity training, fertilisers and guidance on fertilisation. As a result, natural rubber yield increased by up to about 19 percent, and farmers’ earnings rose by approximately 25 percent in the target region.

Halcyon Agri commented: “At Halcyon Agri, we believe that the long-term resilience of the natural rubber industry is closely linked to the well-being of smallholder farmers. Through our subsidiary, PT Hok Tong, and in partnership with DUNLOP, we are advancing a CSR programme in Jambi Province to strengthen farmer capabilities through training, agricultural inputs and on-the-ground support. We are honoured to collaborate with DUNLOP, whose strong commitment and investment have been instrumental in enabling this initiative. Through this partnership, we aim to enhance productivity, improve livelihoods and promote sustainable practices across the supply chain. We believe this collaboration will contribute to the long-term sustainability of the natural rubber industry and create meaningful value for all stakeholders.”

Mulyono, a farmer who received support, said, “After the application of fertilisers, the leaves and bark of a rubber tree showed clear improvements in their conditions, and the health states of the entire tree improved. The leaves became even greener, and the bark became thinner, which made tapping easier. As a result, the rubber yield increased from approximately 100 kg to around 125–130 kg. Support from Halcyon Agri and DUNLOP has led to the improvement of our livelihood, and we expect a project like this to continue in the future.”

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Bridgestone is broadening its winter truck tyre offering with the introduction of the Duravis Winter Drive, a new premium product designed specifically for mild European winter conditions. The tyre aims to help commercial fleets lower operational downtime and total cost of ownership by delivering extended mileage, better fuel efficiency and dependable winter traction.

The newly launched Duravis Winter Drive achieves a 15 percent mileage improvement over its predecessor, the Bridgestone RW-DRIVE 001.1, alongside a three percent reduction in rolling resistance compared to the previous generation. These enhancements allow fleets to cut both fuel consumption and carbon emissions while maintaining reliable snow traction throughout the tyre’s entire lifecycle, thereby minimising the risk of weather-related vehicle downtime.

Key performance gains are enabled by a fresh pattern design, a tailored compound and the integration of Bridgestone’s ENLITEN Technology, a next-generation suite that delivers customised and uncompromised tyre performance while boosting sustainability. Additional engineering features include new sipes geometry for improved traction until end of life, a higher contact area, increased tread depth and variable groove angles to extend wear life and mileage. Interlocking centre ribs further reduce rolling resistance and enhance fuel efficiency.

To support sustainable fleet management, the Duravis Winter Drive is engineered for regroovability and multiple retreads, extending tyre lifespan, reducing waste and lowering operational costs. Its retreadable design also aids fleets in cutting environmental impact. The tyre comes with integrated RFID for digital readiness and is designed for year-round use. Availability begins in size 315/80 R22.5 from May 2026, with additional sizes rolling out in August 2026.

Waqqas Ahmad, VP Commercial, Bridgestone EMEA, said, “Now more than ever, European fleets need both predictable, reliable performance and solutions that can help reduce operational costs. That’s why we’ve engineered a tyre that consistently and efficiently performs from the very first kilometre to the last. The Duravis Winter Drive is built to keep vehicles running and help fleets stay on the move with confidence.”

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