Purification of Plastics

Polycycl’s purification technologies focus on building advancements in delamination, de-inking and solvent based purification methods, with a goal to recover upcycled polymers that are substantively free of contamination.

Solvent based approach to upcycling

The solvent extraction process starts by isolating the target plastic resin from a mixed waste stream. The isolated resin is then dissolved in one or more carefully selected solvents to obtain a homogenised solution.

Additives, colorants, odorants and other non-plastic contaminants are then removed from this homogenised solution using a series of physical separation and chemical-assisted steps.

The filtrate left behind contains the purified plastic in a dissolved form. The purified resin is then re-precipitated and recovered by addition of a non-solvent to the filtrate mix. The end result is a purified resin that may be used for manufacturing of new plastic articles.

The entire process operates at relatively low temperature and pressure and uses non-hazardous solvents which are recovered and re-circulated.

The development of these technologies is presently at TRL-4 readiness.

Additives, colorants, odorants and other non-plastic contaminants are then removed from this homogenised solution using a series of physical separation and chemical-assisted steps.

The filtrate left behind contains the purified plastic in a dissolved form. The purified resin is then re-precipitated and recovered by addition of a non-solvent to the filtrate mix. The end result is a purified resin that may be used for manufacturing of new plastic articles.

The entire process operates at relatively low temperature and pressure and uses non-hazardous solvents which are recovered and re-circulated.

The development of these technologies is presently at TRL-4 readiness.

Technologies in R & D

Chemical Recycling of Tetrapak

Recovery of Polyethylene & Aluminium from
post-consumer Poly-Al film.

Polyethylene

Aluminium

TetraPakCycl^TM

Chemical recycling of flexible
Multi Layered Plastics

De-metallization, de-lamination and de-inking of flexible MLP.

Mixed Poly-olefins (PE/PP)

Recovered PET

MLPCycl^TM

Chemical recycling of post-consumer coloured PET

Recovery of decolorized PET crystals from post-consumer colored PET bottles.

Solvent dissolution

Contaminant
Precipitates

Recovered PET

Purified filtrate

PETCycl^TM

Chemical Recycling of post consumer HDPE

Removal of colorants, pigments, dyestuffs, odorants.

Shredded HDPE

PECycl^TM

Solvent dissolution

Decontaminated HDPE

Recovered HDPE

MLPCycl ^TM

Polyethylene

Aluminium

TetraPakCycl^TM

Chemical Recycling of Tetrapak

Recovery Of Polyethylene & Aluminium
from post-consumer Poly-Al film.

PETCycl ^TM

Mixed Poly-olefins
(PE/PP)

Recovered PET

MLPCycl^TM

Chemical recycling of flexible Multi Layered Plastics

De-metallization, de-lamination and de-
inking of flexible MLP.

PECycl ^TM

Solvent dissolution

Contaminant
Precipitates

Recovered PET

Purified filtrate

PETCycl^TM

Chemical recycling of post-consumer coloured PET

Recovery of decolorized PET crystals from post-consumer colored PET bottles.

PETCycl ^TM

Decontaminated
HDPE

PECycl^TM

Solvent dissolution

Shredded HDPE

Recovered PET

Chemical Recycling of post consumer HDPE

Removal of colorants, pigments,
dyestuffs, odorants.

Technologies in R&D

Tetra PakCycl

Chemical Recycling of Tetrapak

Recovery Of Polyethylene & Aluminium from post-consumer Poly-Al film.

Polyethylene

Aluminium

MLPCycl

Chemical recycling of flexible Multi Layered Plastics

De-metallization, de-lamination and de-inking of flexible MLP.

Mixed Polyolefins
(PE/PP)

Recovered PET

Mixed Polyolefins (PE/PP)

PETCycl

Chemical recycling of post consumer colored PET

Recovery of decolorized PET crystals from post-consumer colored PET bottles.

PECycl