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for a better
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Towards a circular
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EVOLUTED RECYCLING
solutions for Plastic and Rubber
Towards a circular
economy
EVOLUTED RECYCLING
solutions for Plastic and Rubber
working
for a better
world
Towards a circular
economy
EVOLUTED RECYCLING
solutions for Plastic and Rubber
working
for a better
world
Home » Rubber

RUBBER IS NOT AN ENEMY.
IT JUST NEEDS TO BE UNDERSTOOD AND TREATED IN A PROPER WAY.
HAVE A LOOK TO OUR SOLUTIONS FOR RUBBER RECYCLING.

Thermo-mechanical rubber devulcanization

The theory of devulcanization

The devulcanization is the process by which, by breaking the crosslinks between chains (sulfur or peroxide), a vulcanized rubber is re-transformed into a new plastomeric material, thus making it re-processable and recyclable.

Plastomer
Entanglement

(Physical interaction)

Elastomer
Crosslink

(Chemical Bond)

Maris thermo-mechanical process is a 100% green approach that does not involve the use of chemicals. This particular process is made possible thanks to the different chemical-physical characteristics of the CC, CS and SS bonds, specifically: a marked difference in terms of elastic bonding constant (kcc≈100> kcs> kss≈3) and an energy of different bond (370, 310 and 270 kJ / mol respectively).

Application range

Thanks to Maris devulcanization process, the following materials can be recycled:

  • ELTs – End of Life Tires
    • Car tires
    • Truck tires
    • Off road tires
  • ACM – Polyacrilic Rubber
  • BR – Butadiene Rubber
  • EPDM – Ethylene Propylene Diene Monomer
  • FKM – Fluorelastomers
  • IIR – Butyl Rubber
  • IR – Isoprenic Rubber
  • NR – Natural Rubber
  • Q – Silicone Rubber
  • SBR – Styrene Butadiene Rubber
MATERIAL RUBBER
PolymerVulcanized rubber
OriginPost-consumer or post-industrial
Final useSame use or different uses
EXTRUSION LAYOUT
L/D64-72
Degassing points1
RECIPE
Grinded rubber100%

From chemical and rheological analysis carried out on devulcanized materials, it is found that the devulcanization yield can reach 60-80%.

The devulcanized material can be reused in the same original application, from 15 to 50% mixed with the virgin rubber while maintaining the desired mechanical properties. For different final applications it is possible to use devulcanized rubber in a blend with percentages higher than 50%.

C-TSE size (mm) 2030405058708092112133
OUTPUT* (kg/h)5
10
20
30
50
80
80
100
100
150
150
250
250
400
400
500
550
700
800
1000
*The above data strongly depend on rubber type and/or morphology