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.

Sri Trang Group has reiterated its dedication to developing the natural rubber sector while protecting the environment and assisting nearby communities. The company recently held the second edition of its 2026 ‘One Sri Trang, One Environment’ initiative at Rubberland Products Company Limited's Mukdahan Branch. Worayan Bunnarat, Governor of Mukdahan, headed a delegation of senior provincial officials from the Provincial Industry, Labour and Public Health Offices. Community leaders and partner networks also participated to learn about the factory's responsible management approach.

Welcoming the delegation were Chalermpop Khanjan, Executive Director of Sri Trang Agro-Industry Public Company Limited, and Mustopa Longsaman, Factory Manager of the Mukdahan branch. A symbolic tree-watering ceremony opened proceedings, underscoring a collective commitment to environmental stewardship. Attendees then explored an exhibition displaying natural rubber innovations spanning the supply chain, from traceability systems to programmes enhancing local quality of life. A standout initiative converts discarded plastic bottles into eco-friendly brooms, creating income for residents. The exhibition also recognised collaborative efforts, backed by provincial authorities, that enabled the branch's TO BE NUMBER ONE Club to attain national distinction as a ‘Silver-Level Model Workplace, Year 1’.

Visitors witnessed production processes directly, with particular attention to odour prevention and control at the source. Measures include a fully enclosed raw material storage building, ozone-based air treatment and a biofilter system for reducing odours. The Mukdahan facility has further refined its environmental monitoring through E-Nose intelligent electronic nose technology, which identifies odours and evaluates their dispersion in real time while allowing continuous data sharing with local communities. Alongside this, the V-Pass Smart Receive digital system screens raw material transport vehicles from the outset, helping avert rubber serum leakage along transportation routes.

Sri Trang Group is confident the event will reinforce trust between the factory and neighbouring communities through transparent disclosure of its operational practices. The Group continues to pursue the facility's progression towards ‘green factory’ status and remains committed to stable, sustainable growth in partnership with rubber farmers, local communities and the environment.

Hankook Tire has secured the title sponsorship of Rally US, Round 11 of the 2027 FIA World Rally Championship, the company announced during a signing ceremony at the 2026 SEMA Show in Las Vegas on 3 November. Representatives from Hankook, the WRC Promoter and the Rally US Organizing Committee attended the event.

The agreement grants Hankook naming rights to the rally, which will be staged as Hankook Rally US under the company’s unified global brand. It represents Hankook’s first title sponsorship of a WRC round.

Hankook Rally US will mark the WRC’s return to the United States after 39 years, since the Olympus Rally in Washington State in 1988. Set for 25–29 August 2027, the event will run on gravel stages across Tennessee and Kentucky, with Knoxville serving as rally headquarters and a ceremonial start in Nashville, which also hosts Hankook’s US headquarters.

Through the sponsorship, Hankook seeks to boost brand awareness in North America, especially in the US, one of the world’s largest automotive markets. The company plans to use exposure across rally stages, the WRC Arena, fan zones and podium backdrops to engage local motorsport fans and strengthen ties with customers and partners. Hankook has supplied tyres exclusively to all WRC classes since the 2025 season and supports more than 70 motorsport competitions worldwide, feeding event data into high-performance tyre research and development.

Rob Williams, Senior Vice President of Hankook Tire North America Headquarters, said, “The WRC’s historic return to the US marks a milestone for Hankook as our first title sponsorship of a WRC round. This partnership will showcase our tyre technology, elevate our premium brand presence and strengthen ties with customers and partners across North America.”

Matt Crews, President and CEO, Rally US, said, “We’re proud to represent America’s return to the World Rally Championship, and especially proud to do it alongside Hankook. Tennessee is my home state, and Hankook is a leader in our automotive industry, with its US headquarters in Nashville and its plant in Clarksville. Hankook Rally US gives them a great platform to showcase their brand to fans here at home and to the WRC’s audience around the world.”

Senator Bill Hagerty said, “Hankook has been a great employer and partner for the Tennessee economy since they decided to move operations to our state more than a decade ago. Seeing them serve as title partner for the FIA World Rally Championship’s return to America, right here in Tennessee, will put our state in front of a global audience, and I couldn’t be more pleased of how far that relationship has come.”

Firestone, a Bridgestone Americas subsidiary, has introduced the Firestone Pathway AS, an all-season touring tyre built for everyday drivers. It comes in 73 sizes, giving it the widest vehicle coverage of any Firestone tyre, and pairs dependable performance and long tread life with value, all backed by a 65,000-mile limited mileage warranty.

Development was shaped heavily by consumer feedback, which pushed improvements in wet traction, tread life and ride comfort over the predecessor. The original plan called for 48 sizes, but 25 more were added mid-development to broaden market reach, helping Firestone cover nearly 77 percent of registered vehicles.

A tread compound engineered for longevity, additional sipes and an optimised see-through void promote even wear and sustained traction. Deep interlocking 3D sipes deliver grip from light snow to dry and wet pavement. Internal testing recorded wet braking gains of 18 percent against the Uniroyal Laredo HT, 11.7 percent against the Firestone All Season and 7.4 percent against the Toyo Extensa AS2, along with shorter dry braking than six leading rivals. Low rolling resistance also supports fuel efficiency in combustion-engine vehicles.

Nationwide availability is underway, with fitments covering popular models such as the Toyota Camry, Toyota RAV4, Subaru Outback, Jeep Grand Cherokee and Chevrolet Equinox.

Leslie Sawyer, Senior Product Design Engineer, Bridgestone Americas, said, "Most drivers want a tyre they can depend on. The Firestone Pathway AS is designed to deliver reliable performance and long-lasting value, giving drivers the confidence they need in everyday driving situations."

Scandinavian Enviro Systems AB (publ) has entered into a conditional service agreement with an international operator that provides transport services to the energy sector. The agreement follows a letter of intent signed by the two parties on 17 March 2026 and marks a further step towards establishing a tyre pyrolysis plant in North America. Using Enviro’s technology, the facility is intended to recycle up to 50,000 tonnes of end-of-life tyres annually.

Under the terms of the agreement, Enviro will produce the technical documentation needed for the plant’s permit applications and prepare an initial design for the entire facility. For these services, the company will receive a fixed fee of USD 2,000,000, corresponding to approximately SEK 19.5 million. The fee is divided between USD 500,000 for permit application work and USD 1,500,000 for plant design, with USD 450,000 payable once the customer decides to proceed and the remainder paid in instalments as various parts of the services are delivered. Additional work and technical support beyond the fixed-fee scope will be invoiced on an ongoing basis.

The start of Enviro’s work depends on the customer making a final decision to proceed with the project. That decision, in turn, requires the customer to have secured a site for the plant and to have entered into binding agreements with buyers of the plant’s two main products, oil and carbon black, covering at least 75 percent of expected production for each product. Should the customer neither decide to proceed by 31 December 2027 nor elect to continue, the agreement will terminate.

The assignment covers two principal deliverables: technical documentation required for environmental, planning and fire safety permit applications and an initial design of the whole plant, including drawings, equipment lists, calculations and technical specifications. The design will serve as the basis for more detailed engineering work before an investment decision. Enviro will also provide technical support during the permit application process for 12 months after delivering the permit documentation. The agreement does not grant any right to use Enviro’s technology to construct or operate the plant, which would require a separate licence agreement.

According to the timetable, the assignment is expected to be completed about seven months after the customer’s decision to proceed, with permit application documentation ready after roughly five months. The customer may terminate the assignment with 30 days’ notice, in which case Enviro is entitled to compensation for work performed and costs already incurred. Enviro remains entitled to compensation regardless of whether permits are granted or the plant is ultimately built. The agreement is described as an important step in Enviro’s strategy to establish technology-based plants internationally, with the design potentially forming the technical basis for a future licence agreement.

Fredrik Aaben, CEO, Enviro, said, “This is an important step towards establishing Enviro’s technology in North America. Together with the Customer, we are now moving from a letter of intent to a binding conditional agreement, and we look forward to designing the plant as soon as the project is ready to proceed.”