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.

Continental has expanded its ContiTread product line by introducing the HDL 5 EP, a new long-haul drive retread engineered to meet the rigorous demands of modern fleet operations. This next-generation offering is designed to deliver consistent performance while simultaneously improving fuel economy and reducing the overall cost per kilometre for commercial carriers.

The retread incorporates a five-rib tread architecture that ensures reliable traction across extended highway routes. Its specially optimised contact patch, working in conjunction with V-shaped grooves, promotes uniform rubber wear, thereby prolonging the service life of the tread and enhancing the return on investment for each retreading cycle. The tyre is currently produced in sizes 220, 230 and 240, all featuring a uniform tread depth of 21/32.

By focusing on increased durability and operational uptime, Continental positions the HDL 5 EP as a sustainable and intelligent choice within its broader ContiTread portfolio. The tyre aims to provide a practical solution for fleets seeking to balance high performance with long-term efficiency in challenging over-the-road environments.

Galaxy, a leading global brand of construction, earthmoving and material handling tyres, has announced its entry into the rapidly expanding UTV and ATV market. The company is launching two flagship product lines, the Hulk PSX and the Everest PSX, which build upon the firm’s century-long heritage in engineering high-performance tyre solutions.

The new tyres are specifically engineered for off-road and utility applications, promising superior durability, extended service life and enhanced traction on challenging surfaces. Both ranges also prioritise puncture resistance, stability and ride comfort, catering to a diverse array of recreational and operational needs.

The Hulk PSX is positioned for off-road enthusiasts, featuring a durable compound for longevity, tough sidewalls to resist cutting and a radial construction that supports high-speed performance. Its design includes shoulder blocks for improved cornering, a deep tread for traction, and a high tread-to-void ratio for stability, with various sizes available for 12- and 14-inch rims.

Conversely, the Everest PSX targets utility-focused users, offering resistance to cuts and abrasions, reduced vibration through pattern continuity and strong wet-surface grip. It includes rim protection and puncture-resistant features to ensure durability and is offered in multiple sizes for 12-, 14- and 15-inch rims to suit a wide range of UTV configurations.

Dyutiman Chattopadhyay, Chief Technology Officer, Yokohama-ATG, said, “Building on its 100+ years legacy, Galaxy’s entry into the UTV/ATV category is a strategic step in strengthening its presence globally. These tyres are designed to meet the evolving needs of customers seeking performance, reliability and durability in extreme conditions.”

Bridgestone has issued a comprehensive advisory for motorists confronting the perils of summer heatwaves, which present significant challenges for both drivers and their vehicles. The combination of scorching tarmac, fully laden holiday luggage and extensive motorway travel can subject tyres to extraordinary strain. In response, the tyre manufacturer has outlined essential precautions to enhance road safety during elevated temperatures.

When temperatures climb beyond 30 degrees Celsius, the company emphasises the need for drivers to prioritise personal wellbeing. Adequate hydration and regular respite are paramount, as excessive heat can impair concentration and slow reaction times. Experts suggest scheduling a break at least every two hours, while seeking shaded parking areas is recommended to curb heat accumulation inside the vehicle.

Beyond passenger comfort, Bridgestone highlights critical technical considerations for hot weather. Tyres are particularly susceptible to added stress, prompting the company to urge pre-trip inspections. Prior to lengthy excursions, tyre pressure should be checked when cold, as heavier holiday loads require adjustment. Under-inflation can exacerbate heat generation, adversely affecting wear, stability and braking distances, with specific pressure guidelines often available for laden vehicles.

Driving behaviour requires modification under these conditions. High speeds on hot road surfaces generate significant additional heat within tyres, a risk that escalates with a full vehicle or trailer. Bridgestone counsels motorists to moderate speed and adopt a smooth driving style. A visual inspection for cracks, bulges or embedded debris is also imperative, as high temperatures intensify the effects of damage, with older tyres being especially vulnerable.

The advisory also addresses unpredictable summer weather, where heatwaves can abruptly give way to thunderstorms and heavy rain. The sudden shift from hot tarmac to a wet surface places tremendous demands on tyres and drivers. Maintaining sufficient tread depth and equipping the car with high-performance summer tyres is essential for effective water dispersal and control during these sudden changes.

Bridgestone points to its Turanza 6 tyre as a solution for these demands, offering excellent wet grip and short braking distances on wet roads. This premium touring tyre also provides enhanced driving comfort, improved mileage and optimised fuel efficiency. Motorists can therefore navigate changeable summer weather with heightened confidence and peace of mind.

Andy Mathias, Head of Marketing, North Europe, said, “The high temperatures we are currently experiencing in many parts of Europe pose particular challenges for drivers and vehicles. This makes it all the more important to pay special attention to road safety. With well-maintained tyres, regular checks and anticipatory driving, motorists can significantly improve their own safety and that of their passengers.”

The Alliance for the Future of Tires (AZuR) is broadening its international footprint with a new European project group focused on tyre retreading. An inaugural online meeting for this initiative is scheduled for 22 July 2026, marking the first step in creating a pan-European network uniting companies, research bodies and sector specialists.

Retreading extends the lifespan of premium tyre casings, conserving raw materials and reducing CO₂ emissions while supporting Europe's circular economy. The sector faces regulatory shifts, including the ESPR Regulation, the Digital Product Passport and heightened traceability mandates.

The AZuR project group will serve as a permanent forum for retreaders, tyre makers, equipment suppliers, research institutes and associations. The agenda prioritises innovation, digitalisation, legislation, best practices and joint ventures, with the kick-off session defining the group's mission, thematic focus and structure.

The online meeting via Microsoft Teams on 22 July from 10:00 AM to 12:00 PM CEST invites existing AZuR partners and new European stakeholders. Retreaders, manufacturers, academic institutions and associations are encouraged to participate and shape the platform from its inception.