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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Michelin reported lower first-quarter revenue after adverse currency movements offset stable underlying sales, while the tyre maker maintained its 2026 guidance amid growing geopolitical and supply chain uncertainty.

Group revenue for the three months to 31March fell 5.4 percent year on year to €6.2bn, compared with €6.5bn a year earlier. Michelin said the decline was entirely due to currency effects, primarily the appreciation of the euro against the US dollar and several other currencies. At constant exchange rates, revenue was stable.

Tire volumes declined 1.4 percent during the quarter, although replacement sales improved, supported by a 3 percent increase in MICHELIN-brand tire volumes. A favourable product mix, particularly in larger premium tires, partly offset weaker original equipment demand.

The Consumer segment recorded revenue of €3.4bn, down 4.4 percent on a reported basis. Michelin said replacement sales of passenger car and light truck tires remained resilient, while original equipment sales continued to be affected by weaker automotive markets, particularly in China. Sales of 18-inch and larger tires represented 69 percent of MICHELIN-brand sales during the quarter.

Revenue in the Transportation segment fell 11.3 percent to €1.4bn, reflecting weaker original equipment demand in North and South America and adverse exchange rates. Replacement sales increased in Europe but remained subdued in North America amid a softer road freight market.

The Specialties segment reported revenue of €1.1bn, down 3.3 percent. Michelin said mining and aircraft tire sales increased during the quarter, while beyond-road activities stabilised despite continued weakness in agricultural original equipment markets.

Polymer Composite Solutions revenue rose 5.1 percent to €326m, supported by the integration of Cooley Group and growth in sealing and coated fabric activities. Michelin said the segment would continue expanding through the integration of Flexitallic in April and the expected consolidation of TexTech later in 2026.

The company said uncertainty linked to the Middle East conflict continued to create risks around global demand, raw material supply and energy costs. Michelin nevertheless maintained its financial outlook for 2026, citing operational resilience, localised production and supply chain integration.

During the quarter, Michelin also completed the acquisitions of Cooley Group and Flexitallic as part of efforts to accelerate the growth of its Polymer Composite Solutions business.

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Hankook Tire, the exclusive tyre supplier for the FIA World Rally Championship, has concluded the fifth round of the 2026 season, Rally Islas Canarias, which took place from 23 to 26 April in Spain’s Canary Islands. For the demanding asphalt stages, Hankook provided its specialised Ventus Z215 and Ventus Z210 tarmac rally tyres, engineered to handle extreme conditions.

The event, first held in 1977, marked its 50th anniversary this year and its second edition as an official WRC round. Competitors tackled 18 special stages across Gran Canaria Island, centred around Las Palmas, covering approximately 322.61 kilometres. The course featured rough, high-abrasion volcanic asphalt with dramatic elevation changes, while dense fog and local rain above 1,000 metres made weather a decisive factor. The opening day’s Super Special Stage at the BP Ultimate Circuito Islas Canarias offered side-by-side racing, where small pace differences quickly altered positions.

Hankook’s tyres provided reliable grip and control at high speeds and through continuous cornering, helping drivers maintain stability on the technical routes. Sébastien Ogier of TOYOTA GAZOO Racing secured his first win of the season, leading a team podium sweep. In the Drivers’ Championship, Elfyn Evans leads with 101 points, followed closely by Takamoto Katsuta on 99.

The 2026 WRC season now moves to Round 6, Vodafone Rally de Portugal, from 7 to 10 May in northern Portugal, a demanding event mostly on unpaved surfaces. Hankook will operate a ‘Brand World’ booth in the service park there, using motorsport content and hands-on experiences to promote its premium image. As exclusive WRC tyre supplier since 2025, Hankook continues integrating data from over 70 global championships into R&D, advancing high-performance tyre technology and the Ventus brand’s global leadership.

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wdk, the German Rubber Industry Association, and the ADK, the German Rubber Industry Employers’ Association, hosted their annual Rubber Industry Day in Berlin on 28 April 2026. The event saw wdk President Michael Klein issue an urgent call for industrial policy measures, warning that pressure on Germany’s manufacturing base remains relentless. He argued that the country can no longer afford strategic delays, insisting that declarations of intent must be replaced by immediate action to reduce bureaucracy and energy costs for businesses.

Citing fresh member survey data, Klein reported that sales, revenue and production levels in Germany’s rubber industry are predominantly declining compared to the previous year. He described this downturn as a clear warning signal, noting that companies have exhausted their potential at domestic sites. Without political support, he added, only foreign markets remain viable alternatives, while Germany continues to lose industrial substance.

The wdk president stressed that the federal government’s failure to implement countermeasures risks permanent damage to the nation’s industrial base. He expressed bafflement that political decision-makers have long known what needs to be done yet have failed to act for an extended period. Klein concluded that proactive intervention is now essential, as the erosion of Germany as a production location must finally be stopped to preserve the manufacturing sector as the backbone of the economy and a guarantor of prosperity.

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Bridgestone Americas has concluded the first phase of a joint research initiative with Penske Transportation Solutions, known as the Decarbonisation Lab, which focused on identifying commercially ready methods for reducing carbon emissions in real-world commercial fleet operations. The partnership confirmed that both companies intend to continue their collaboration with a second phase of testing in 2026, building on the operational data gathered during the initial stage.

Working alongside Dynamon, a specialist in advanced data analytics, the Lab’s first phase involved logging more than 500,000 fleet miles to assess three specific operational areas. The use of low-rolling-resistance retreads, continuous tyre pressure monitoring and Bridgestone casings on Penske vehicles produced a measurable gain of 6.35 percent in fuel economy. In a separate track, the partners tested renewable diesel in Tennessee, a state outside the usual Low Carbon Fuel Standard markets, to study long-term maintenance needs and efficiency results.

A third work stream saw Penske and Bridgestone engineering teams jointly redesign aspects of Bridgestone’s automotive tyre retail distribution network, with the goal of cutting roughly 152,000 miles from that logistics system. Scaling that approach across the entire dedicated fleet operated by the two companies would correspond to a four to six percent drop in CO₂ emissions, according to the project’s projections.

The overall findings from the Decarbonisation Lab reinforce the idea that meaningful near-term sustainability gains require a combination of proven technologies, rigorous data collection and close industry cooperation rather than isolated efforts. Representatives from both organisations are scheduled to present the first-phase results at ACT Expo 2026 in Las Vegas on the afternoon of 4 May.

Erik Seidel, head of sustainability for Bridgestone in the Americas, Europe, Middle East and Africa, said, “Our Bridgestone team is proud to have partnered with Penske for more than a decade, from IndyCar racing to deploying millions of retreaded tyres across the Penske fleet. The Decarbonisation Lab is a testament to how sustainable transformation can be accelerated when we work together.”

Bill Combs, Senior Vice President, Partnership & Sustainability Strategy, Penske, said, “We are honoured to collaborate with Bridgestone to bring the Decarbonisation Lab to the marketplace. Our companies have enjoyed a successful history of uncovering great solutions that benefit our customers and the industry.”

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