MARANGONI

RINGTREAD

 SYSTEM

RETREADING RAISED
TO PERFECTION

RINGTREAD, a complete cold retreading system
that guarantees a perfect end result.

25%

of the European market share thanks to RINGTREAD

Thanks to RINGTREAD, more than 25% of cold retreaded tyres in Europe are produced through the use of Marangoni technology and this market share is growing. This is because it is the best technology for retreading that is nothing but advantageous: savings in terms of time, resources, and organization; top performance that only the spliceless ring can offer.
We make all the know-how of the Marangoni Group available to you, a group which has successfully made retreading its priority for more than 70 years.

THE BEST SYSTEM FOR THE RETREADER

MAXIMUM PRODUCTIVITY

5 minutes less
for each tire retreaded

If labor is a cost, the saved time turns into saved money.

3 minutes are saved with the faster building time because the RINGTREAD System doesn't involve: tread measuring and cutting, the manual application and the splicing operation.
2 minutes are saved with the elimination of the tread loading and unloading phases and the elimination of waste handling, typical operations of the traditional retreading with flat precured treads.

NO
WASTE

6% less material

With the saved material you can retread 1 extra tyre every 16 and a half tyres

Uniform stretch: 1%
Conventional tread cannot be stretched
in the splice area
Smaller average undertread: 2%
Thanks to radial pressing the RINGTREAD undertread is uniform on all its base surface
No waste: 2%:
Tread ends become oxidized and must be
thrown away
Concave pressing: 1%
The flat tread circumference is always the same,
while in the RING it decreases near the shoulders

MORE EFFICIENCY IN LESS SPACE

Better use
of the manufacturing area

RINGTREAD System ensures a high level of automation. The process automation affects costs, rationalization and production performance increase:

• RINGTREAD System provides the usage of high efficiency machinery, less manpower and idle time elimination.
• Working space optimization: no more cutting stands, no more hoists for tread lifting.

SUPERIOR
QUALITY

Your best retread

With the RINGTREAD System you obtain a retreaded tyre that guarantees maximum reliability and performance levels that are comparable, if not superior, to those of a new tyre.

With the broadest range of technologies, services, and products, you can meet the needs of your customers, respond quickly to changes, and enter new market segments.
RINGTREAD TESTIMONIALS

“The advantages of the tyres made in our plant using Ringtread technology were immediately clear, both to us and our customers, and indeed demand has grown constantly. Uniform processing and excellent values in terms of concentricity and balance mean that our product offers clear advantages over tyres made using traditional flat strips. Our mission is to offer our customers tyres that are absolutely reliable, guaranteeing the highest performance and reduced vehicle downtime, and consequently economic benefits. In this way, they don’t buy ‘just’ a retreaded tyre”

– Uwe Müller –

AD presso Reifen Müller GmbH – Hammelburg-Westheim

RINGTREADINGVS RETREADING

Each ring is produced individually by means of a centripetal radial press. Therefore, vulcanisation takes place in the final configuration of the tread, allowing the molecular structure to stabilise in a stress-free configuration.

no deformation = less wear

The strips are produced in long multi-stage presses, where it is difficult to precisely check temperature, pressure and vulcanisation times. The strip does not follow the convex shape of the casing: this deformation generates tension between the tread and the structure of the tyre, causing overheating.

The convex profile of the ring perfectly adapts to the curvature of the casing, preserving its integrity. Surface uniformity ensures maximum adhesion between the tread and the tyre structure as well as superior performance.

uniform tread = more kilometres

The application of a flat strip to the convex shape of the tyre structure causes deformation and weak points, which increase the tread wear rate and cause the casing to overheat, which could reduce the life of the tyre.

RINGTREAD allows for perfectly balanced retreaded tyres. The fact that they are spliceless reduces rolling resistance and ensures slow and regular wear, thus significantly reducing mileage costs and the total price of owning the tyre.

spliceless = maximum reliability

Retreading using conventional flat strips necessarily involves the presence of at least one splice. In addition to inevitably throwing the tyre off balance, this creates a weak point that can increase the likelihood of the thread detaching itself.

MACHINERY

  • INSPECTION

    Highly qualified operators, using sophisticated equipment especially developed by Marangoni, determine the characteristics of the casings and select the best ones.

  • BUFFING

    Residues of the old tread are completely eliminated, leaving a surface on the casing featuring crests and grooves designed especially to improve adhesion of the ring.

  • REPAIR

    Following additional inspection, any damage to the tyre is repaired specifically before applying the ring. Marangoni trains personnel continually on how to carry out these operations.

  • BUILDING

    The Marangoni building machines place and automatically centre the ring on the casing, rolling it to maximise adhesion. The machinery used is extremely sophisticated and eliminates all possibility of human error.

  • MONORAIL

    The casings are handled in such a way as to prevent any contact with impurities and debris, using a made-to-measure monorail that, exploiting a double envelope system, ensures maximum adhesion of the new parts to the casing.

  • CURING

    This guarantees a perfect seal between the ring and the casing, the last step in obtaining a high quality tyre.

Marangoni offers its retreaders a useful service to order online all materials for retreading

The RingBuilder Saturn is the next generation of machinery to facilitate the use of market leader Marangoni’s cold retreading technology RINGTREAD System, which utilises splice-less precured tread rings, perfect adhesion, and offers an accessible 10 tyre an hour capacity at much lower prices than its “bigger sister” Ringbuilder 3003.