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.

Doublestar Tire emerged as a prominent exhibitor at the 2026 Latin Tyre & Auto Parts Expo in Panama City. The premier industry gathering for the Americas attracted over 700 international exhibitors and more than 30,000 professional trade visitors, providing a substantial platform for automotive parts and tire manufacturers.

The Panamanian event serves as a critical commercial gateway, radiating trade opportunities across more than 20 neighbouring nations. Given Latin America’s varied topography and climatic extremes, which demand superior tyre resilience and wet traction, Doublestar has collaborated with regional partners to engineer customised products. These targeted solutions have secured considerable market acceptance and popularity throughout the area.

Among the showcased innovations, the TBR tyre D902 integrates a wear-resistant compound with an advanced tread pattern, ensuring dependable stability for long-haul routes in tropical heat. The DSU02, a premier passenger car tyre, demonstrates exceptional protection against abrasion and impact, coupled with superior handling in both wet and dry conditions. A diverse portfolio of economically priced models further drew significant attention from purchasing agents.

This strategic participation has notably amplified Doublestar’s brand presence across the American markets and established a robust framework for deeper local engagement. Committed to delivering high-performance, value-added transportation solutions, Doublestar continues to reinforce the international standing of Chinese tyre manufacturers through quality-driven innovation.

Barez Industrial Group, Iran’s leading tyre manufacturer, observed its 29th consecutive year of activity on the Tehran Securities Exchange during a commemorative event held on 23 August 2026. The gathering featured the traditional exchange bell ceremony, underscoring the company’s enduring footprint in Iran’s capital markets.

Speaking on the occasion, Jamal Mirzaei, CEO of Barez Industrial Group, spoke of the organisation’s momentum, asserting that current undertakings and forward-looking blueprints are steadily carving out its tomorrow. The firm’s leadership used the platform to reaffirm its commitment to sustained growth and operational excellence.

Originating as a provincial manufacturer in Kerman back in 1985, Barez has since risen to become a linchpin of the national tyre industry. Strategic upgrades to production lines and the integration of cutting-edge manufacturing processes have propelled its reach beyond borders. Since joining the TSE in 1997, it has outshone six other listed peers in the rubber and plastics category, claiming the largest share of the sector’s overall valuation, which exceeded IRR 330 trillion at the prior session, with the group responsible for over IRR 120 trillion of that figure.

The proceedings also included an award presentation, with TSE Chief Mahmoud Goudarzi offering a commemorative token to Mirzaei in appreciation of the firm’s three-decade record of transparent engagement with the exchange. Later, a press engagement allowed the executive team to walk reporters through notable milestones, pipeline ventures and strategic forecasts, fostering a clearer view of the company’s roadmap for investors and analysts alike.

Continental has introduced a 32-mm variant of its Aero 111 road tyre, expanding the range of its most aerodynamically advanced model. Developed in partnership with Swiss Side, this wider version aims to deliver the same drag-reducing performance while catering to cyclists seeking a combination of speed and improved comfort on demanding surfaces.

The tyre’s aerodynamic efficiency is achieved through a patented tread pattern featuring 48 precision cavities that function as vortex generators. This design manipulates airflow around the front wheel to delay separation, maintaining optimal performance across varying wind angles. The result is a significant reduction in drag and an enhanced sailing effect, allowing for greater forward propulsion with reduced rider effort.

Despite its broader profile, the tyre maintains its speed and durability credentials through Continental’s BlackChili compound, ensuring low rolling resistance and dependable grip in all conditions. Protection is provided by the Vectran Breaker layer, and the tubeless-ready casing is compatible with hookless rims. Offered in black sidewall and three widths, the Aero 111 now serves a wider array of road cycling demands.

Hannah Ferle, Road Product Manager, Continental Tires, said, “With the addition of the 32 mm width, we truly are offering aero performance from every angle. Developing the Aero 111 alongside Swiss Side has allowed us to build a tyre like no other, one that performs across even the most demanding conditions. The Aero 111 has already proven the benefits of advanced airflow management, but this additional width allows us to bring those same aerodynamic gains and crosswind-taming technologies to the modern road cyclist who refuses to compromise on comfort.”

TyreSafe has issued a fresh warning to UK motorists regarding the persistent dangers of part-worn tyres, drawing on the findings of recent multi-agency enforcement operations. The safety charity has underscored that despite ongoing efforts to regulate the sector, significant compliance failures continue to place drivers at risk. These concerns are based on collaborative inspections conducted over the past year with Trading Standards, police forces and local authorities, which have revealed systemic issues within the market.

Enforcement actions in Norfolk and Lancashire have exposed alarming deficiencies in the safety and legality of part-worn tyres on sale. In Norfolk, an inspection of nearly 200 tyres across several retail outlets found that over a third were in a dangerous condition, featuring exposed cords, structural damage and inadequate repairs. Remarkably, only a single tyre out of the entire batch satisfied all legal requirements, leading to the immediate removal of unsafe products and subsequent enforcement measures against non-compliant sellers.

Parallel operations in Lancashire painted an equally concerning picture, where none of the 30 part-worn tyres examined met the mandatory legal standards. Every tyre inspected failed to display the compulsory ‘PART-WORN’ marking, and many exhibited serious defects such as embedded objects, sidewall damage and substandard repairs. These discoveries have prompted ongoing engagement with businesses to encourage better practices, though the overall findings highlight a widespread disregard for established safety protocols.

In response to the enforcement outcomes, TyreSafe has noted that educational initiatives have yielded some positive changes among retailers. Certain businesses have enhanced their understanding of legal obligations, reduced their stock of part-worn tyres or transitioned to offering new budget alternatives. Nevertheless, the charity maintains that part-worn tyres remain a high-risk category, as compliance is not uniformly observed, leaving consumers vulnerable to products with undocumented histories and hidden structural weaknesses that are not always visible during a casual inspection.

The organisation has emphasised the critical distinction between tyres fitted to used vehicles and those sold as standalone part-worn products. While the former are acquired as part of a complete car purchase, the latter are individual items whose safety and legality depend entirely on the retailer’s diligence. TyreSafe has reiterated that these tyres must meet strict legal criteria, including a minimum tread depth of two millimetres, successful pressure testing and freedom from cuts or bulges, yet enforcement shows these rules are frequently ignored.

Motorists are being strongly urged to exercise caution and prioritise their safety by sourcing tyres from reputable suppliers and conducting regular checks on air pressure, condition and tread depth. TyreSafe has highlighted that opting for part-worn tyres on cost grounds can prove false economy, given their reduced lifespan and elevated risk of sudden failure. The charity continues to advocate for new tyres as the safest choice, stressing that the unknown history of part-worn products can have dire consequences in real-world driving conditions.

Stuart Lovatt, TyreSafe Chair, said, “Our recent education and enforcement activity revealed a deeply concerning picture of tyre safety on UK roads. Too often, part-worn tyres are being used as a dangerous short-term fix rather than a safe, compliant solution. We encountered vehicles fitted with severely aged tyres that should have been removed from service years ago, alongside single-tyre replacements fitted purely to secure an MOT pass. This creates highly unstable and potentially dangerous combinations, including mismatched summer and winter tyres on the same axle, which can seriously compromise braking and handling. Perhaps most alarming, none of the part-worn tyres we inspected carried the legally required ‘PART-WORN’ marking, highlighting a serious lack of compliance and leaving motorists unknowingly exposed to unsafe and unverified products.”