Together we find a better way.

How sustainable is your tire curing today?

Level up your ESG target by using electrical tire curing.
CO2 emissions reduced -50% per tire cured vs conventional steam heating.

Electric tire curing is the future in tire manufacturing.

Reduce emissions. Boost sustainability. Maximize efficiency.

Game changing innovation with significant CO2 saving impact.

Take your tire production to the next level while reducing your CO₂ emissions!

Introducing electrical curing – the innovative solution for a greener future in tire manufacturing.

Now available as a retrofit for existing HF curing presses or as a feature for any new HF curing press, electrical curing helps you:

Minimize environmental impact
Optimize energy efficiency
Improved tire quality

Join the movement toward cleaner tire production.

Upgrade to electrical curing today and make your mark for a sustainable tomorrow!

E-Curing: Green Facts & Figures

CO2 Emissions reduced by ~ 50% supporting customers ESG targets

CO2 emission reduced by 50%.

With market volume of 2.3 bio new tires produced annually by 2031, E-Curing can potentially save ~21 M tons of CO2 per year!

HF will offer it as a feature on a new presses and as a retrofit for existing presses.

HF's electrical curing solution.

Key facts

Less energy use per tire
Immense reduction in CO2 emissions, up 100% of the curing shop by using renewable energy
Temperature and pressure is independantly controlled
Improved tire quality due to more consistent temperature top to bottom
AI controlled heat distribution - Temperature range 20-220°C

Variable Flow
Cured with heated Nitrogen
Nitrogen recovery system & Nitrogen cooling
Extended bladder life
Easy maintenance

The solution is new to the market. It is tested and customer approved.

Electrical heating available as a retrofit package on all existing HF curing presses or on any new curing press.

Technical solution

Keep existing container and center mechanism
Pressure control of 0-28 Bar
Temperature range 20- 220°C
Pressure and Temperature is indepentantly controlled
Variable Flow
Nitrogen recovery system
Nitrogen cooling

1. Internal heating

Testing Module with all features

2. External heating

Simulation of heat transfer during gas circulation

Geometry: Concentric inlet and outlet channels

Gas velocity magnitude on center plane

Heat transfer intensity on tire contour

Gas temperature on center plane

Insulation as a key factor for electrical heating

The existing container set-up stays the same, but insulation around the container and platen is added.
The improved insulation is crucial to achieve the sustainability results due to minimization of energy losses.
With the insulation it is possible to touch the hot container even at target value.

Implementation → thermal images

Form on the inside of the container at target value:

Scale: dark blue 167 red 169 C

Test Press: Hamburg, Germany

Test Press in Hamburg fitted with electrical heating solution –
bladder shaping with nitrogen @ 170° C

Inside container

Bladder

Cured tire

Inside outside

Outside

Internal hot nitrogen simulation

High velocity heated Nitrogen injection & circulation

Current steam cure curve can be simulated using heated Nitrogen which is circulated in the Bladder

Old: Steam curing with condensate

New: Nitrogen curing (No condensation!)

Results

Thermocouple tire testing

Stable and symmetric flow pattern of nitrogen in the bladder
Temperature deviation of max. 1°C in the platens and container
Even heat distribution across the complete tire. Top and bottom sidewall are the same temp
40-60% less energy consumption compared to steam

More than 100 tires cured.

Possible to cure a tire at any temperature and pressure.
Cured more than 10 thermocouple tires
Production run of more than 100 tires in different set-ups to validate repeatability.

Temperature inside the bladder during the curing cycle

Table: temperatur inside the bladder during the curing cycle

A completely rethought heating process

The heating of the bladder and the consistency of the temperature during the tire heating process are comparable for both methods.
The key difference is that with electrical heating, pressure and temperature can be controlled independently, allowing the heating process to be completely rethought. In addition, less energy is consumed when using nitrogen.

Power consumption in kWh per cured tire

Current operating results:

HF – Teamspirit: Rolling forward with electrical tire curing