Green-Gum’s Revolution in Rubber Recycling
- Green-Gum process is process of controlled surface devulcanization of cured rubber chips in the course of their fine grinding.
- Green-Gum process is the high performance of combination of new effective machinery with new effective chemical modifiers.
- Finished products of Green-Gum process are superior reclaimed rubber materials, which can be used to make rubber products or mixed with virgin rubber.
- Using Green-Gum’s patented technology, the cost of recycled rubber is 70% less than virgin rubber.
Green-Gum modifiers are special chemical agents, consisting from several components. Modifiers are acting on cured rubber exposed to breaking shear-stress deformation, and giving rise to:
- Cleavage of sulfur bonds resulting in controlled devulcanization.
- Preventing reversible reaction of revulcanization.
- Incorporate completely into the structure of reclaim so as to exclude any waste or by-products.
- Green-Gum has developed 23 formulations of modifiers complying with these requirements.
- All modifiers are protected by international patents.
Rollers + Green-Gum modifiers technology
- The process is based on principle that cured rubber chips are being split into finer particles and concurrently devulcanized by the modifier when the rubber is subjected to shear-stress deformation while passing through tight nip between rollers.
- Since depth of devulcanized layer is bound by residence time of rubber particles in the nip, required depth is reached by repeated passing through the same rollers or by consecutive passing through the row of roll mills.
- The process needs refinery mill with friction in the range 1.8…3.0 , nip adjustment in the range 0.05…0.3 mm and effecting cooling system.
- Scheme of the whole process is shown at the picture.