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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Mitas, Official Agriculture Tyre Sponsor of the National Tractor Pullers Association (NTPA) and Title Sponsor of the Mitas National Finals Pull-Off, will occupy the spotlight at the Champaign County Fairgrounds in Urbana, Ohio, on 19 September, when the 2026 Grand National titles are decided.

Serving as the closing Grand National fixture of the season, the 39th Mitas All-Star Pull-Off also wraps up the brand's first year as the association's official agricultural tyre partner. That arrangement forms part of a three-season commitment spanning 2026 to 2028, drawing the company nearer to a North American motorsport discipline where immense engine output, grip and staying power face relentless scrutiny with every pass.

Two tyres will illustrate the breadth of the company's agricultural know-how at the venue. The PowerPull 01 30.5L-32 exists purely for pulling competition, arriving as a smooth tyre devoid of any moulded tread so crews can carve bespoke patterns suited to the track and their own machine setup; its tailored compound and tough build supply the grip, endurance and repeatability the sport requires. The VF 750/60R46 CFO 189D HC1000, by contrast, serves high-capacity self-propelled sprayers and comparable field duties, using Very High Flexion engineering to bear heavy loads at lower pressures while a broad contact patch spreads weight and keeps traction. Its tread delivers grip, longevity and self-cleaning ability for dependable service in punishing conditions.

When the 2026 NTPA season reaches its finale in Urbana, the sport's leading pullers and their followers will gather for a fitting celebration. Mitas will be present throughout, tying together the track and the field by demonstrating how the traction, durability and reliability demanded in competition echo the very traits underpinning its agricultural tyre lineup.

Andrea Masella, Marketing Director, Yokohama TWS, said, "Tractor pulling puts enormous demands on every part of the machine, including the tyres, making it a great environment to demonstrate what traction, durability and reliability mean when performance is pushed to the limit. We are proud to support NTPA as its Official Agriculture Tyre Sponsor and to bring our expertise to the Mitas All-Star Pull-Off. This partnership allows us to connect with the pulling community while highlighting the performance focus behind our agricultural tire portfolio. Pull like a Bull — on the track and in the field."

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Michelin has introduced an automated regrooving system called NAZCA, aiming to modernise a retreading practice that has served truck, bus and coach tyre maintenance for more than a century. The manual method demands specialised expertise and now confronts ergonomic strain and a shortage of skilled workers. Developed by Michelin engineers, NAZCA automates the process while following manufacturers’ recommendations, targeting consistent quality and repeatability. The system employs a high-density laser scanner and advanced algorithms to exploit every millimetre of usable rubber.

Because each tyre possesses a unique geometry, NAZCA adjusts cut depth in real time across the tyre’s full width and circumference. After more than a year of real-world testing, the machine can raise the number of regrooving jobs a workshop completes. Michelin estimates a capacity increase of 30 percent to 50 percent, depending on operating conditions. Each regrooving operation requires under three minutes of technician hands-on time, allowing staff to handle alignment, repairs and tyre mounting or removal.

This supports greater workshop profitability and flexibility. NAZCA accommodates a wide range of tyre brands and sizes, provided the casing is robust enough for the lifespan-extending procedure. About 20 NAZCA machines are in pilot testing across Europe. Michelin plans further rollouts in various countries in 2027, subject to applicable regulations, with a gradual commercial launch tailored to each market. The system will appear at the Michelin stand during IAA Transportation in Hannover from 14 to 20 September 2026.

NAZCA forms part of Michelin’s multi-life model, pairing regrooving and retreading so a tyre can last up to 2.5 times longer than a single-life product. Regrooving enables use to the legal wear limit, adding up to 25 percent more mileage and up to 5 percent fuel savings. Retreading completes the approach: initial REMIX retreading can double mileage for roughly 60 percent of a new tyre’s cost, while REMIX 2 premium retreading, available for 90 percent of Michelin truck lines, delivers 95 percent of new-tyre performance for about 60 percent of the cost, cutting cost per kilometre by 33 percent. Each retreading also saves about 50 kg of raw materials per tyre.

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Dr Suttipong Angthong, Secretary-General of the Association of Natural Rubber Producing Countries (ANRPC), delivered a keynote address at the Sustainability in Tires 2026 conference in Bangkok on 3–4 September 2026, presenting the organisation's positions on eco-friendly supply chains, market dynamics and ethical production methods vital to the global tyre sector.

His participation highlighted ANRPC's leadership as the principal representative of rubber-producing nations, working to guarantee that smallholder farmers and member countries help shape global sustainability criteria while building strategic alliances with tyre makers and processing firms.

Through such international engagement, ANRPC promotes environmentally responsible cultivation, equitable commerce and traceable supply networks, connecting the natural rubber industry to worldwide ESG frameworks and safeguarding a durable, sustainable future for every stakeholder.

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Pirelli’s Hard tyre played a decisive role as Kimi Antonelli won the inaugural Formula 1 race at the Madring, mastering a one-stop strategy to take victory in the Spanish Grand Prix. The Mercedes driver finished ahead of Max Verstappen and Lando Norris, extending his World Championship lead in the process.

All three podium finishers made their sole pit stop during a Virtual Safety Car period between laps 14 and 15. Antonelli and Norris swapped Pirelli Mediums for Hards, while Verstappen replaced his starting Softs with Hards. The one-stop approach proved dominant across the grid, with only George Russell, Carlos Sainz, Oliver Bearman, Fernando Alonso and Valtteri Bottas stopping twice.

Track temperatures peaked at 52°C and air temperature reached 32°C, mirroring conditions from earlier in the weekend. Russell, Antonelli’s closest title rival and team-mate, came home fifth. Antonelli now leads the standings on 292 points, with Russell second on 211. The Azerbaijan Grand Prix follows on Saturday 26 September.

In supporting action, Dino Beganovic won Sunday’s Formula 2 Feature Race ahead of Alex Dunne and Ritomo Miyata, all three running Softs before Hards and pitting on lap 18. Ugo Ugochukwu secured the Formula 3 World Championship by finishing second in Madrid, as Freddie Slater’s eighth place allowed the title swing. Tuukka Taponen won the finale, with Pedro Clerot third.

Dario Marrafuschi, Pirelli Motorsport Director, said, “The teams approached today's race differently from what had been simulated on track on Friday. Thanks also to the opportunity provided by the Virtual Safety Car, they favoured a more measured management of pace and degradation, which allowed them to significantly extend stint lengths and made the one-stop strategy the preferred choice for the majority of the field. The star of the Grand Prix was the Hard tyre, a compound that had been little explored during free practice and which today demonstrated a very high level of consistency, proving to be the most robust of the three compounds from both a thermal and mechanical perspective. With the C2, we saw several stints exceeding 45 laps, reaching very high levels of wear without any significant performance drop-off. Both the Medium and the Soft also proved to be effective options despite the track temperatures. The C4, in particular, completed competitive stints comparable to those of the Medium in terms of durability.

“As expected, graining appeared mainly on the front-left tyre, on the inner area of the tread, but with limited intensity. The work carried out by the teams on car setup and tyre management helped to minimise its effects. In a race characterised by few overtaking opportunities, the drivers were able to focus on tyre management, contributing to a very straightforward contest from a strategic perspective. Congratulations to Ugo Ugochukwu for securing the Formula 3 championship title today at the end of a highly competitive season. The series continues to represent an important proving ground for young talents from all over the world. The fact that the title was decided only at the final round highlights the exceptionally high level of competitiveness within the championship, which this year delivered spectacular racing and outstanding sporting value.”

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