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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Kumho Tyre UK is set to return to the Road Transport Expo (RTX) 2026, scheduled from 30 June to 2 July at Stoneleigh Park. The company continues to emphasise dependable tyre solutions tailored for United Kingdom fleet operators, reaffirming its commitment to the commercial vehicle sector.

At Stand R37 in Exhibition Hall 1, attendees can examine Kumho’s latest commercial vehicle tyre range, engineered for applications spanning long-haul motorway driving to regional and local delivery routes. The display highlights the regional multi-performance lineup, including the KXA31, KXD31 and KXT31. Designed for mixed-use fleets navigating motorways, A-roads and urban settings, these tyres balance durability, mileage and efficiency to maximise performance across varied routes.

Also on show are the KMA12 and KMD41, developed for mixed service applications where robust construction is vital to maintaining uptime. Engineered for tougher conditions, they offer enhanced durability for demanding environments. Kumho’s RTX presence underscores its ongoing support for fleet operators with high-quality, value-driven solutions focused on performance, longevity and real-world reliability.

Kumho’s TBR sales team and executive management will be available throughout the event to discuss fleet requirements and the company’s growing retailer network. Visitors can enjoy refreshments while learning about the expanding CV portfolio.

Richard Lyons, Managing Director, Kumho Tyre UK, said, “We’re looking forward to returning to RTX and building on the conversations we started last year. It’s a great opportunity to meet with fleets face-to-face, showcase the strength of our CV range and demonstrate the quality and performance that underpins the Kumho brand.”

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Prinx Chengshan has introduced a new line of agricultural tyres at the 2026 Xinjiang International Agricultural Machinery Expo, which opened in Urumqi on 25 May. The Chengshan brand showcased products specifically designed for tractors and combine harvesters, responding to the growing performance demands of large-scale machinery driven by agricultural modernisation.

As tyres play a critical role in equipment efficiency, Prinx Chengshan has developed a full-chain innovation system covering fundamental research, application development and pilot verification. With a newly launched green and intelligent off-the-road tyre plant, the company now offers agricultural tyres that excel in durability and load capacity, providing cutting-edge solutions for global customers.

The Chengshan TX series addresses specific operational needs. The TX600, for tractors, features large tread lugs and flexible sidewalls to ensure stability and comfort during high-speed relocation. The TX700 uses a reinforced carcass and belt structure to handle heavy combined loads without deformation. The TX800 incorporates an R-1W deep tread pattern and wear-resistant compound to withstand sharp stubble, gravel and roots, extending tyre life and lowering costs. For combine harvesters, the TX2000 uses proprietary IF technology to deliver 20 percent higher load ratings at the same pressure, reducing soil compaction and protecting topsoil.

Moving forward, Prinx Chengshan will continue its product plus service strategy, supporting modern agriculture alongside global partners. The company aims to advance green farming practices and contribute to a sustainable future.

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Yokohama Tire has become a new partner of the Velocity Invitational, North America’s leading motorsport and lifestyle festival. The event is scheduled for 29-31 May at Sonoma Raceway in Northern California. The tyre manufacturer will showcase its ADVAN line of ultra-high-performance tyres and also support round four of the Porsche Sprint Challenge USA West by Yokohama.

The Velocity Invitational takes place in California’s wine country, blending world-class historic racing, modern hypercars, rare vehicle collections and immersive car culture. These attractions are paired with fine wines, luxury hospitality and exceptional culinary offerings.

Candace Cogan, Director of Product Marketing, Yokohama, confirmed several brand activations. These include ADVAN-livery vehicles on display and on track, such as the BBI Autosport Porsche 992 TurboCup ‘Dixie’ and a GT2 EVO tribute by Type-99. To mark the 75th anniversary of Porsche Motorsport, Yokohama will host a ‘Prost’ celebration featuring a curated video highlighting the longstanding relationship between the two brands.

Several Yokohama brand partners will attend. They include builder Vin Anatra, known for a Ferrari 360 rebuilt bolt-by-bolt on ADVAN A052 tyres; BBI Autosport founder Betim Berisha; photographer Larry Chen; filmmaker Sung Kang, famous for playing Han in ‘The Fast and the Furious’, whose upcoming film ‘DRIFTER’ features the ADVAN-shod hero car ‘Lola’ and Formula Drift hall of famer Daijiro ‘Dai’ Yoshihara.

Cogan said, “Yokohama is excited to be a sponsor of the Velocity Invitational, which is the ultimate festival of flat-out exhilaration and excitement. It’s a natural extension of our performance legacy and a powerful platform to showcase our iconic ADVAN tyres to enthusiasts united by a shared passion for car culture in every form.”

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The Tire Industry Project (TIP) has opened registration for its 2026 Tire Emissions Research Conference, scheduled for 8 to 10 December 2026 at the University of Cambridge in England. The event continues a series that began with successful gatherings in Munich in 2024 and Boston in 2025.

Building on prior editions, the 2026 conference maintains an exclusive focus on scientific research into tyre emissions and actionable countermeasures. This emphasis responds to rising global concern over tyre wear pollution, with organisers believing that progress depends on open knowledge exchange, multi-stakeholder collaboration and harmonised scientific methods.

The agenda covers the full scope of the issue, including tyre and road emission generation, environmental distribution and fate, ecological behaviour and impact, design alternatives and civil engineering or environmental practices for mitigating tyre and road wear particles and related chemicals. Participants range from scientists and industry practitioners to policymakers and experts in environmental and materials science.

Held at Jesus College within the prestigious University of Cambridge, the conference follows the tradition of partnering with world-class institutions such as the Technical University of Munich and the Massachusetts Institute of Technology. Abstract submissions are due by 29 May 2026, with further details and registration available on the event website.

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