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 has introduced its first tyre engineered specifically for the new generation of wide body trucks, bringing its established safety and performance standards to a segment traditionally served by Tier-3 products. The MICHELIN XDR Wide Body Truck is positioned as a premium offering for mining fleets, built to handle high loads and speeds while delivering robustness and puncture resistance in demanding mining environments.

Wide body trucks are gaining global traction in mining because they strike an appealing balance among payload capacity, safety and acquisition cost. Michelin developed and launched the new fitment in under two years by combining intensive field analysis with agility, responding to mining customers’ needs for safety and productivity. The tyre also supports fleets moving towards more efficient and increasingly electrified haulage solutions, addressing demands for safety, productivity and operating cost control.

Safety remains paramount in mining, where a tyre failure can seriously affect personnel, equipment and operational continuity. The new tyre therefore features an innovative casing fully reinforced with thick steel cords, enabling it to carry 12 tonnes (26,786 lbs) per tyre at a recommended pressure of 9-bar (130 PSI) – significantly lower than typical market recommendations, which helps reduce blowout risk.

The MICHELIN XDR Wide Body Truck sustains heavy loads at continuous speeds, supporting productivity during intensive duty cycles. It offers strong traction, particularly on soft or muddy ground, while its robust tread compound resists damage, provides excellent grip and extends service life, optimising total cost of ownership. These qualities help cut unplanned downtime and maintenance costs, improve equipment availability and maximise material haulage volumes. The tyre launches worldwide in its first size, 16.00 R25, on 1 November 2026, with additional sizes to follow.

Kevin Maleterre, Director – Michelin Beyond Road, said, “Wide body trucks are playing an increasingly important role in mining operations. With the MICHELIN XDR Wide Body Truck, we are applying our expertise in mining applications to this new generation of vehicles, with a clear aim: to help our customers combine safety, productivity and the development of their fleets.”

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Tegeta Green Planet recently participated in youth forums held across five Georgian cities – Mestia, Telavi, Gori, Kutaisi and Zugdidi – as part of the Eco Awards School Competition. The events gave young people a platform to exchange knowledge on environmental issues, explore new ideas and discuss green initiatives.

Alongside the discussions, display areas devoted to Tegeta Green Planet and Amboli introduced visitors to the two organisations' work, their approach to handling waste and their sense of environmental duty. Guests stopping by the Tegeta Green Planet section heard about the company's core operations, the thinking behind Extended Producer Responsibility (EPR) and why the circular economy matters.

A varied programme kept participants engaged, with educational games and hands-on exercises built to sharpen their grasp of environmental questions and push them to put what they learned into practice. International specialists and invited speakers also addressed the forums, drawing on their own experience to examine ecological difficulties and possible remedies.

Organised to deepen environmental consciousness among the young and advance sustainable development, the Eco Awards School Competition drew 280 pupils and 100 teachers from 24 public schools throughout Georgia. It operates with backing from the European Union and the United Nations through the Circular Economy Promotion Programme. For Tegeta Green Planet, reaching young audiences is central to building a lasting sense of responsibility, with sound waste practices, resource reuse and circular economy principles at the heart of its efforts to drive long-term change.

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Discount Tire has released a new list of the longest-lasting light truck and SUV tyres, drawing on tyre life data from Treadwell, the company's tyre recommendation tool available to all consumers. Treadwell is powered by millions of real-world tyre mileage and tread depth readings along with independent testing at Treadwell Research Park.

The list identifies 10 tyre models for light truck and SUV drivers that exceed a 70,000-mile median lifespan under normal driving conditions. Every tyre carrying a listed limited treadwear warranty also surpasses its manufacturer warranty by more than 10,000 miles.

According to the U.S. Department of Transportation, American drivers average 13,400 miles per year. On top-performing tyres, a light truck or SUV owner could gain an extra year or more before needing a tyre change. Treadwell's aggregated lifespan figures reflect drivers who properly maintain their tyres, including regular rotations and wheel alignments, with median values collected to 2/32-inch tread – generally considered, and in some states legally mandated as, the minimum viable tread depth. Actual results may vary based on driving location and habits, such as regular highway or all-terrain use.

Discount Tire developed Treadwell using decades of data and independent testing to deliver a hassle-free tool offering personalised tyre recommendations based on where, what and how drivers drive. More than 20 million people used Treadwell online and in stores in the past year.

Dr John Baldwin, Chief Product and Technical Strategist, Discount Tire, said, "If you're driving a light truck or SUV and prioritise getting additional miles of safe driving out of your tyres, Treadwell can be a source of unbiased advice. Our goal is always to be there for our customers when and where they need tyres, which is why Treadwell is available online and used each day in our stores to empower drivers to find the best tyres for their vehicle."

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Plaza Tire Service, a prominent tyre and automotive service provider in the Midwest and member of the Sun Auto Network, has expanded its footprint with a new store in Mattoon, Illinois. The addition strengthens the company's presence in the state and offers drivers throughout Central Illinois improved access to trusted tyre and vehicle maintenance services.

The Mattoon location provides motorists with a convenient destination for tyres, preventive maintenance and automotive repair. Customers can choose from an extensive inventory of leading tyre brands while accessing a full range of services, including oil changes, brake service, batteries, alignments, steering and suspension repair and other routine maintenance.

Plaza Tire Service emphasises selection, convenience and value through its Price Match Guarantee and signature 4 Tires in 1 Hour Guarantee, with broad in-stock inventory available for same-day installation. Founded in Missouri in 1963, the company has become one of the Midwest's largest tyre and automotive service providers, operating across five states while combining regional heritage with the resources of the more than 600-location Sun Auto Network.

Rob Kingery, Regional Vice President, Sun Auto Tire & Service, said, "We're excited to bring Plaza Tire Service to Mattoon and introduce more drivers to the convenience, value and trusted service that have defined our brand for more than 60 years. This location allows us to serve the community with the tyre expertise, same-day service and comprehensive automotive care that customers have come to expect from Plaza Tire Service."

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