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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Apollo Tyres Ltd and Italdesign are set to mark over 25 years of collaborative tyre design at Milan Design Week, running from 20 to 26 April 2026. The partnership will display key co-creations, including the Vredestein Ultrac Sessenta and the latest Vredestein Quatrac Pro 2 all season tyre, which is scheduled for a summer release.

The collaboration between the Italian design house and the Vredestein brand has now reached 27 years, beginning with the 1999 debut of the Vredestein Sportrac. Designed by renowned automobile stylist Giorgetto Giugiaro, the Sportrac introduced an asymmetric pattern that boosted its sporty appearance, setting the stage for future projects blending aesthetics with high-performance engineering.

Launched in 2006, the Ultrac Sessenta was created by Italdesign to celebrate six decades of the Vredestein brand in Enschede, the Netherlands. The tyre’s name is Italian for the number 60, a tribute to its designers. It features a distinctive tread pattern that enhances performance and handling as an ultra-high-performance summer tyre.

The latest joint effort, the Vredestein Quatrac Pro 2, goes on sale in June. This ultra-high-performance all-season tyre incorporates a sidewall design that portrays the seasons through a seamless mix of solid and void elements, with flowing graphics hinting at leaves, snow and rain. Its overarching Passage theme reflects seasonal cycles and travel through varied conditions, while visual references to water ripples, wind and motion underscore the tyre’s advanced all-season capability.

Udyan Ghai, Head of Marking, Apollo Tyres Ltd, said, “The partnership with Italdesign has endured because we share the same ethos regarding the union of performance and aesthetics in modern product design. Both the Ultrac Sessenta and Quatrac Pro 2 demonstrate how tyre design can enhance not only function, but also visual identity.”

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DUNLOP (company name: Sumitomo Rubber Industries, Ltd.) has achieved a major milestone as its BLUE RESPONSE TG tyre secured first place in the overall ranking of a tyre test conducted by Auto Motor und Sport, a premier German automotive publication. This marks the first major test victory for the summer tyre since its market introduction.

The BLUE RESPONSE TG represents the inaugural Dunlop brand summer tyre developed by Sumitomo Rubber Industries specifically for the European market following the company’s acquisition of the Dunlop brand trademark in Europe, United States and Australia. Auto Motor und Sport is widely recognised for its rigorous evaluation standards regarding vehicle performance and safety, making it a highly influential medium in European tyre assessments. The publication’s circulation and technical expertise command deep trust from both automotive experts and enthusiasts.

Securing the top overall ranking in this test demonstrates the advanced technology and high level of refinement embedded in the BLUE RESPONSE TG. For safety-conscious consumers and those prioritising driving performance in the European market, the assessment results are expected to serve as a crucial reference for purchase decisions.

During the test, the BLUE RESPONSE TG in size 195/55R16 was fitted to vehicles including the Hyundai i20 and INSTER. The tyre earned high marks for delivering balanced wet and dry road performance. On wet surfaces, it stood out for grip and braking distance, while on dry roads, it excelled in handling and braking. These combined strengths led to the tyre’s overall victory. The BLUE RESPONSE TG is engineered to achieve both high-level safety and dynamic traveling performance.

Markus Bögner, President of DUNLOP Tyre Europe GmbH, said, “I am really delighted that the first DUNLOP tyre we designed for the European market received the highest rating in the assessment by a trusted magazine with a long history. The assessment results we obtained this time will provide a tailwind for the DUNLOP tyre business in Europe, which started on a full scale in January. We will continue to provide ‘Experiences that exceed expectations’, which is one of the brand value propositions of DUNLOP, for more customers.”

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Pirelli has reported a dominant all-Ducati podium in Race 1 of the Dutch Round at Assen, the third fixture of the FIM Superbike World Championship. Nicolò Bulega extended his perfect start to the season with a seventh consecutive victory after a close contest with team-mate Iker Lecuona, who settled for second. Sam Lowes finished third, completing the manufacturer’s sweep. All three riders selected SC1 soft compound tyres for the front axle and SC0 soft rubber at the rear.

The weekend also highlighted the speed of Pirelli’s softest tyre options despite relatively cool conditions. During qualifying, Bulega established a new Assen lap record using the SCX supersoft rear, clocking 1 minute 32.144 seconds. That time shaved nearly half a second off the previous benchmark of 1’32.596, set by Lowes the prior year with the SCQ extrasoft compound. The other two Ducati riders on the front row, Lowes and Lecuona, also eclipsed the old record.

Elsewhere at the Dutch circuit, Jaume Masia won WorldSSP Race 1 on a Ducati, followed by Albert Arenas on a Yamaha and Tom Booth-Amos on a Triumph. Most of the Supersport field, including the top two, ran the SCX supersoft rear, while the third-place rider and nine others used the soft SC0; the SC1 was the universal front choice. In World Sportbike action, local rider Jeffrey Buis triumphed on a Suzuki, and the WorldWCR race went to Spain’s Maria Herrera on a Yamaha for her second win of the season. Both support classes employed DIABLO Superbike tyres with SC1 compound front and rear. Over the first two days, track temperatures varied from 16 degrees Celsius during early Superbike practice to 24 degrees for Supersport Race 1.

Giorgio Barbier, Pirelli Motorcycle Racing Director, said, “Despite the low temperatures, typical of Assen at this time of year, soft tyres were used in both WorldSBK and WorldSSP. The development work Pirelli has carried out over the years has enabled us to improve versatility and widen the operating temperature window of our tyres. As a result, the soft compounds were used with track temperatures slightly over 20 °C, delivering excellent performance. The new SCX supersoft tyre range, already used last year as development specification E0126, allowed Bulega in qualifying to improve the 2025 lap record by almost half a second, which was set with an even softer compound, the SCQ extrasoft. The SC0, on the other hand, starred in Race1: given the rather low temperatures, the riders preferred an already well-established solution to the development alternative F0298.

“In WorldSSP, both rear options – SCX and SC0 – proved equally competitive, as confirmed by the choices made by the riders on the podium.

“At the front, in both classes, the choice was unanimous: SC1, which ensures good grip and stability. For tomorrow’s Superpole Race, in dry conditions, we expect the SCX supersoft to be used at the rear, as it is more competitive over the 10-lap distance thanks to the extra grip compared to the SC0.”

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TyreSafe, UK’s charity dedicated to raising tyre safety awareness, has launched a new seasonal campaign warning British drivers that spring rainfall poses a hidden danger often overlooked after the harsh winter months. The initiative, named ‘Drip Drip Drop – ‘Little’ April Showers’, focuses on the rising threat of aquaplaning as more vehicles return to roads that remain treacherously slick from sudden downpours.

National data shows that poor tyre maintenance is a leading cause of fatal incidents, with three quarters of car tyre defects linked to neglect. Research further reveals that at 70 miles per hour (approximately 112 kmph), worn tyres add 27 metres to the standard wet stopping distance, an increase of nearly 30 percent compared to the Highway Code baseline.

Incorrect tyre pressure compounds the problem significantly. Underinflated tyres struggle to channel water away, overheat more quickly and extend braking distances, while overinflated tyres reduce the tyre’s contact patch and compromise grip. Spring’s fluctuating morning and evening temperatures make pressure changes especially common during April.

Even tyres above the legal minimum tread depth can fail in heavy rain. Continental Tyres’ research found that at 50 miles per hour, tyres with 1.6 mm of tread required 6.9 metres longer to stop than new tyres with 8 mm tread, whereas those with 3 mm added 2.7 metres. Light rain after dry spells mixes with oil and debris, creating conditions where worn or incorrectly inflated tyres lose all steering and braking control.

With bank holidays, leisure travel and outdoor activities increasing during longer daylight hours, TyreSafe urges motorists not to assume the worst weather has passed. April showers arrive without warning, and the combination of winter road grime and sudden rainfall can turn a routine journey into a dangerous aquaplaning event within seconds. TyreSafe urges road users to embrace the simple ACT protocol: regular checks of air pressure, condition and tread depth.

Stuart Lovatt, Chair of TyreSafe, said, “April showers might sound harmless, but when they hit busy roads and combine with worn or incorrectly inflated tyres, the consequences can be devastating. Aquaplaning can happen in seconds and without warning. The research is clear – poor tyre maintenance dramatically increases stopping distances in wet conditions. That’s why we’re urging road users to ACT: check your Air pressure, inspect the Condition and monitor your Tread. A few minutes of checks could prevent a lifetime of consequences.”

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