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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Georgian company Tegeta Motors, through its environmental arm Tegeta Green Planet, recently spearheaded a major cleanup effort by removing roughly 2,000 illegally discarded tyres from a former landfill near the settlement of Giorgitsminda, Georgia. The operation addressed years of unchecked dumping that had endangered local soil, water and community health.

Despite the challenging terrain, the contaminated site was fully cleared within days using the company’s own resources and in strict adherence to safety protocols. All collected tyres are now set to undergo recycling in line with technical regulations, transforming a longstanding environmental hazard into a manageable waste stream.

This initiative reflects the broader mission of Tegeta Green Planet, which operates under the principle of extended producer responsibility (EPR). Beyond simply remediating a single location, the organisation aims to raise public awareness about the severe consequences of uncontrolled automotive waste disposal, ensuring that collection, transport and recycling are carried out lawfully.

The company has a history of such actions, having previously organised similar cleanups in Tbilisi and Bakuriani. With roughly 45 collection points across Georgia, Tegeta Green Planet encourages responsible disposal through its recycling initiative. Authorised in 2022 to manage the national EPR scheme for waste tyres, the organisation has since attracted nearly 350 manufacturers to its collective compliance system.

Shalva Akhvlediani, Director, Tegeta Green Planet, said, "We are delighted that, as part of a joint initiative between Tegeta Motors and Tegeta Green Planet, we have implemented another large-scale project and cleared the contaminated area of car tyres. Such activities significantly reduce the negative impact on the environment, especially considering that the collected waste is recycled in full compliance with technical regulations. We have carried out similar projects many times before. Last year alone, Tegeta Green Planet collected and recycled more than 6,000 tonnes of automotive waste – tyres, batteries and used oil. We are proud that these figures are growing every year, and in this way, we are contributing to the development of a circular economy and environmental protection in our country. We ask our citizens to report any areas contaminated with automotive waste to us. This can be done via the Tegeta Green Planet website or the Tegeta app, and we will respond accordingly.”

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The Alliance for the Future of Tires (AZuR) has expanded its network with the addition of Granuband, a Dutch leader in high-quality tyre recycling, as its newest partner. As a prominent manufacturer of rubber granules, Granuband strengthens AZuR’s mission to advance a sustainable circular economy for tires across Europe through its expertise in material recovery.

Established in 1991, Granuband specialises in the mechanical recycling of end-of-life tyres using state-of-the-art facilities to produce premium rubber granules and powders. These materials are exported globally for use in sports surfaces, infrastructure projects, industrial goods and various technical applications, showcasing the versatility of recycled rubber.

Beyond manufacturing, Granuband plays a critical role in the collection and logistics of used tyres, traditionally focusing on passenger car tyres in the Benelux region. In recent years, the company has expanded its operations to include truck, agricultural and other specialised tyre categories, driven by a longstanding commitment to innovation in technology, logistics and new applications.

Since 2024, Granuband has operated under Circtec, an international firm specialising in advanced tyre pyrolysis. This integration merges Granuband’s mechanical recycling strengths with Circtec’s chemical recovery technology, creating a comprehensive system that recovers nearly all tyre components. Together, they aim to boost recycling rates, optimise raw material use, cut CO₂ emissions and develop new recyclable materials. Granuband’s addition to AZuR notably reinforces the mechanical recycling pillar, a vital component of the circular economy.

Network coordinator Christina Guth said, “With Granuband, we are expanding our network to include an important player in the mechanical recycling of used tyres. High-quality rubber granules are key to closing the material cycle and reducing dependence on primary raw materials.”

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The Yokohama Rubber Co., Ltd. hosted its 12th Panel Discussion on Biodiversity as an online event on 6 March 2026, bringing together a wide range of participants from 121 locations across Japan. This annual gathering serves as a platform for reflecting on the significance of biodiversity conservation. This year’s programme featured a keynote speech by Dr Kaoruko Kurata, a professor at Yokohama National University’s College of Education and Institute for Multidisciplinary Sciences, titled ‘Creating a Well-Being Society from the Perspective of Biocultural Diversity’. Following her address, the event highlighted the Yokohama Rubber Group’s own conservation efforts, with a lively discussion themed ‘Nature Positive Initiatives through Collaboration between Communities and Companies’ moderated by Dr Tetsuya Kitazawa, Director of Ecology Path Inc. and a lecturer at Edogawa University. The exchange included the company’s employees alongside representatives from local governments, businesses, non-profit organisations, and civic groups.

A central case study presented was the ongoing work at Kameyama Satoyama Park, a Nature Symbiosis Site. Under a support agreement with Kameyama City in Mie Prefecture, Kameyama Bead Company, a tyre bead manufacturing and sales subsidiary of Yokohama Rubber, conducts activities such as removing invasive species and maintaining the park grounds. A city official joined to discuss these efforts, which helped all participants deepen their understanding of practical conservation measures.

Since the adoption of the global nature positive goal at COP15 in December 2022, momentum has grown worldwide, including in Japan. The Yokohama Rubber fully supports this direction and has been an active participant in the TNFD Forum and the 30by30 Alliance for Biodiversity since January 2023. The company advances conservation across its value chain through initiatives like the YOKOHAMA Forever Forest tree-planting events, water quality and biodiversity monitoring and community awareness programmes at its global sites, alongside promoting agroforestry on natural rubber farms. Operating under its sustainability management slogan, Caring for the Future, the company remains committed to creating shared value by addressing social issues through its core business activities.

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Comerio Ercole is all set to make a significant impact on the global stage in April 2026 with its participation in three major industry events – India Rubber Expo (IRE) 2026, Techtextil 2026 and Chinaplas 2026. The exhibitions will be an opportunity for the company to present cutting-edge developments focused on efficiency, sustainability and product quality while strengthening relationships with customers and partners from around the world. Drawing on its extensive heritage in calendering technology, the company will highlight how its advanced, high-performance systems are engineered to meet the rigorous demands of modern production environments.

The first in this series of engagements is the India Rubber Expo, scheduled for 7 to 10 April, where Comerio Ercole will be situated at Booth L-012A. Recognised as Asia’s largest and most significant rubber industry event, this exhibition provides a key opportunity for the company to present its specialised capabilities to the regional and global rubber manufacturing community.

At Techtextil 2026, the premier international fair for technical textiles and nonwovens, scheduled for 21 to 24 April, Comerio Ercole will be located in Hall 12.0 at Stand C41, where it will showcase its latest innovations for the nonwovens sector. Simultaneously, Comerio Ercole will be present at Chinaplas 2026 (21 to 24 April), the world’s leading trade fair for plastics and rubber, occupying Booth 2.1C85. This parallel participation underscores the company’s versatility and its ability to deliver tailored solutions across the technical textiles, plastics and rubber domains.

This busy month comes on the back of a successful presence at the recently held Tire Technology Expo 2026 (3–5 March) in Hannover, Germany. Comerio Ercole won the ‘Tire Manufacturing Innovation of the Year’ award and also managed to clinch a spot as finalist in three additional award categories, highlighting its pervasive leadership and innovative edge in calendering technology.

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