TECHNOLOGY | MELT FILTRATION
with more contaminated sources of PET waste. Fimic has installed two
of its RAS-type filters on PET
recycling lines processing highly contaminated PET waste streams, where in these cases the contamination of the
input material reaches levels as high as 5%, way higher than the typical ppm contamina- tion previously used for food
grade applications, says the company.
Fimic defines these waste streams as “not coming from hot-washed bottle flakes only. Examples include PET lumps from petrochemical waste or
from strapping production, waste fibres and PET straps.”
Above: Fimic says its RAS filter is suited to food-contact and non-food- contact PET recycling
In the first project, the RAS filter is used as the first in two filtration steps where the applied filtration is 150 or 120 microns using a laser screen and achieves an output performance of 2,000 kg/h. In the second project, the RAS filter is the only filtration step in the application, where the applied filtration is 80 microns on a laser screen and achieves an output performance of 700 kg/h. Effective filtration maintains the high throughput even when the intrinsic value (IV) levels on the infeed material are different and inconsistent.
Right: The new Ettlinger ECO 1000 model can achieve throughput rates up to 10,000 kg/h
Contaminants issue The RAS filter system, Fimic’s flagship filtration product for recycled materials, is designed to handle high contaminant levels in post-consumer and post-industrial waste. It is designed with a rotating two-blade scraper that traps the contami- nation that collects on the filter then automatically discharges what it has collected via an adjustable discharge valve. A touchscreen controller allows the user to set the pressure level as a start point signal to activate the scraper. The speed adjustable scraper can also be set to run continuously in the case of large amounts of contamination. Fimic offers the RAS filter as a laser screen, punched screen or mesh screen design. It can be designed for specific requirements, such as the type of plastic material to be filtered, production rate, filtration level required and type of contamination.
46 PLASTICS RECYCLING WORLD | March/April 2023
At last year’s K show, Maag Group company
Ettlinger, a designer and maker of high-perfor- mance continuous melt filtration systems, infor- mally introduced the newest and largest model in its ECO series of filtration technology, which is developed for PET and PA recycling.
Upsizing filters The new ECO 1000 model can achieve throughput rates up to 10,000 kg/h. depending on the filter fineness, which ranges from 60 microns to 1,800 microns. The unit joins the ECO 200, which handles up 1,200 kg/h, the ECO 350, which achieves capac- ities up to 2,500 kg/h and the ECO 500, which can process up to 4,000 kg/h. The new ECO 1000 was part of a high-performance recycling demonstra- tion held in the open-air fairground Recycling Pavilion during the K show. The ECO series is designed as a self-cleaning melt filter technology whereby a scraper removes solid or elastomeric particles that are deposited on the outer surface of a rotating, perforated steel drum as the melt continuously flows from the outside to the inside of the drum. Laser-drilled conical holes in the steel screen are designed for the melt to pass through while the contamination remains on the surface of the drum. The scraper continuously removes the contaminants, which are fed to a discharge system. The melt filter system is designed to maximise contaminant removal while minimising melt loss. Ettlinger also offers its ERF series of high-perfor- mance melt filtration systems, which are designed to process a wide range of polymers, including LDPE, LLDPE, HDPE, PP, PS, ABS, PC/ABS, TPE, TPU and POM. The ERF series can handle materials with up to 16% by weight contamination and are offered in four sizes with throughput rates ranging from 150 kg/h to 10,000 kg/h. Maag also expanded its business vertically with the acquisition late last year of Witte Pumps & Technology, a Tornesch, Germany-based supplier of gear pumps and aftermarket parts and services for the chemical, plastic, and polymer processing industries. Maag will combine its gear pump business with the newly acquired Witte Pumps business to establish a new integrated Gear Pumps business unit. The former owner of Witte Pumps &
www.plasticsrecyclingworld.com
IMAGE: FIMIC
IMAGE: MAAG
Page 1 |
Page 2 |
Page 3 |
Page 4 |
Page 5 |
Page 6 |
Page 7 |
Page 8 |
Page 9 |
Page 10 |
Page 11 |
Page 12 |
Page 13 |
Page 14 |
Page 15 |
Page 16 |
Page 17 |
Page 18 |
Page 19 |
Page 20 |
Page 21 |
Page 22 |
Page 23 |
Page 24 |
Page 25 |
Page 26 |
Page 27 |
Page 28 |
Page 29 |
Page 30 |
Page 31 |
Page 32 |
Page 33 |
Page 34 |
Page 35 |
Page 36 |
Page 37 |
Page 38 |
Page 39 |
Page 40 |
Page 41 |
Page 42 |
Page 43 |
Page 44 |
Page 45 |
Page 46 |
Page 47 |
Page 48 |
Page 49 |
Page 50 |
Page 51 |
Page 52 |
Page 53 |
Page 54
