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Publication Title | Technip Zimmer Process Technology

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Polyethylene Terephthalate (PET)

Technip Zimmer Process Technology

Disc Ring Reactor

Technip Zimmer PET Technology for continuous polycondensation process

The most recognized, used and versatile polymer is produced with the Zimmer® PET process based on raw materials pure terephthalic acid (PTA) and ethylene glycol (EG). Zimmer has designed the PET plant using a three- or four-reactor process.

Proven technology

Technip Zimmer’s track record of working with PET polycondensation plants stretches back more than 60 years.

We build plants ranging from small batch facilities for specialty products to single-line

plants with capacities of up to

2000 tons of PET per day for

The PET production process

In our three reactor process, PET is produced starting from ethylene glycol (EG) and pure terephthalic acid (PTA). The raw materials are esterified in a 2-stage reactor while the final reaction step is done in our unique Zimmer Disc Ring Reactor (DRR).

PET for packaging: You have a choice

We offer two processes for the production of PET for packaging or film. Our global project experience enables us to help you select the best option for your application.

Direct High Intrinsic (DHI) viscosity - a cost effective process

Years of continuous improvement and development of

the PET process has culminated in the DHI process which eliminates the Solid State Polycondensation step. We have reduced the number of process steps, resulting in lower energy consumption, less capital investment, which directly translates to CAPEX and OPEX savings. The DHI process increases yield and reduces cost for utilities.

During the dealdehydization (DAH) process operated under conditioned air, acetaldehyde is removed to lowest levels below 1 ppm.

The production plants are prepared for recycling PET flake feed up to 30% and in turn, reducing potential contaminants below the threshold of regulatory concern of the Food and Drug Administration (FDA).

Melt Distribution




Efficient reactors: high reliability at a low cost

Our reactors are proven and ensure a long life time of the plant with low maintenance. The reactors are based on a standard design which is adapted to client specifications.


Technip Zimmer® 3-Stage PET Polycondensation Process for Direct Spinning or Chip Production

Strand Cutting or Under Water Cutting Unit


Paste Preparation




3-Reactor PET Polycondensation Process for Direct Spinning or Chip Production

Spinning Beams

Image | Technip Zimmer Process Technology

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