CONVEX™ twin screw extruders

CONVEX™ Side Guides allow quick adjustment to different rubber strip widths and thicknesses while maintaining a constant gap at the top roll. The solution minimizes production impact and enables flexible use for different compounds.

Downstream batch tracking ensures reliable identification and traceability of every batch throughout the production process. It improves process transparency while reducing errors, manual effort, and quality-related costs.

CONVEX™ Force Master is the state-of-the-art solution to upgrade the performance, reliability and availability of your CONVEX™, replacing traditional breaking discs. Thanks to its high sensitivity to load variations and its highly accurate load measurement, Force Master provides continuous protection against load peaks, preventing mechanical stress and unplanned shutdowns. Fully integrated into the CONVEX™/TDE control system, it eliminates downtime related to disc replacement, reduces spare parts costs and increases overall machine availability, while remaining fully retrofittable on existing CONVEX™ and TDE installations

mChute is the CONVEX™ solution designed to make mixer maintenance safer, faster and more efficient: the automatically tiltable rear door, fully integrated into the safety chain logic, creates a stable anti-slip working platform that securely positions and locks the ladder, allowing safe access for up to two maintenance engineers. By providing a wider and safer access to upstream equipment, mChute significantly reduces hazards, minimises downtime and can be easily retrofitted on existing lines, turning maintenance operations into a controlled, reliable and productivity-oriented process

Hydraulic displacement of the extruder, key features:

Unique solution to grant

Combining top-tier energy efficiency, outstanding throughput and process performance, CONVEX™20NG is designed for the most demanding production targets within a compact footprint, requiring no civil works for fast and cost-effective installation and ensuring maximum value from day one

The Automatic Transfer to Batch‑Off solution is designed to ensure a continuous, stable and safe transfer of the rubber strip from the CONVEX™ roller head to the batch‑off, combining advanced roll scrapers with an integrated conveyor belt. The scrapers are made of special anti‑sticking materials and optimised through extensive field experience, to prevent sticking, reduce unplanned shutdowns and improve machine availability, while ensuring easy and safe access for maintenance. The dedicated conveyor belt, fully integrated into the CONVEX™/TDE control system, synchronises strip detection and speed regulation, protects the working area and ensures a smooth, automatic and controlled strip flow, significantly reducing manual intervention, improving process stability and minimising downtime.

RAPID is a fully automatic and integrated solution designed for CONVEX™ and MILLMIX^® machines to ensure consistently smooth and high‑performance roll surfaces. The polishing head moves safely along a rack fixed to the roll frame, allowing easy installation and fully controlled operation, with precise adjustment of key parameters such as abrasive film feed rate and motor speed. Using specially engineered abrasive films, RAPID eliminates surface irregularities in a uniform and repeatable way, significantly reducing rubber sticking – especially with high‑silica compounds – and improving overall line availability. Thanks to its flexible design, RAPID adapts to multiple roll coatings, while meeting the latest safety regulations and CE requirements for maximum operational reliability.

ROLLS TECHNOLOGY combines HFG’s proprietary Super Cooling Technology with advanced roll surface treatments to maximise cooling efficiency, reduce rubber sticking and extend roll lifetime on CONVEX™ roller heads. The optimised cooling layouts, combined with dedicated anti‑sticking coatings, ensure stable processing conditions, improved corrosion resistance in demanding tyre applications and excellent resistance to wear and impact. Available in different configurations to match specific process requirements, ROLLS TECHNOLOGY enhances productivity, reduces cleaning and downtime, and delivers consistent, high‑performance operation over time.