Recycling process of a cross-linked polymeric material, in parti

Details Recycling process of a cross-linked polymeric material, in parti Recycling process of a cross-linked polymeric material, in parti

1998-07-23

2000-10-03

Jagannathan, Vasu

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Process of treating scrap or waste product containing solid...

521 405, 521 455, 521 465, 521 48, C08J 1104, C08J 1106

Patent

active

061274348

ABSTRACT:
A process for dereticulating a cross-linked polymeric material, such as cross-linked polyethylene from scraps of electric cable coatings or from unused cable coatings through a mechanical mixing cycle, wherein the cross-linked material is subjected to a specific power per mass unit such as to induce shear stresses in the material itself and temperatures higher than pre-established minimum levels. At the end of this cycle the material goes back to a thermoplastic state that may be substantially regarded as thermoplastic; then, following granulation, cooling, drying and sacking, the material will be ready for re-use, either alone or mixed with virgin polymers, according to usual operating technologies for thermoplastic materials. Eventually, the mechanical mixing cycle may be preceeded by a preliminary crushing cycle of the cross-linked polymeric materials to be treated. Preferably, the mixing cycle is carried out in a twin-screw extruder with special screw and temperature profiles.

REFERENCES:
patent: 3891372 (1975-06-01), Takiura
patent: 3956541 (1976-05-01), Pringle
patent: 4607796 (1986-08-01), Enkilopov et al.
patent: 4607797 (1986-08-01), Enkilopov et al.
patent: 4875847 (1989-10-01), Wenger et al.
patent: 5026512 (1991-06-01), Chang
patent: 5704555 (1998-01-01), Arastoopour

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