Fakuma 2026: Feeding Aid Increases Fluff Throughput Sixfold

Leistritz at Fakuam 2026 Feed Assist Increases Throughput for Polyolefin Fluff

2026-10-09 Source: Press Release Matthias Gutbrod 2 min Reading Time

Related Vendor

At Fakuma, Leistritz will demonstrate how a new feed aid on a twin-screw extruder can increase throughput sixfold—from 40 to 240 kg/h—when processing polyolefin fluff with low bulk density.

The new Leistritz Feed Aid (LEH) increases extrusion throughput for materials with low bulk density.(Bild: Leistritz) — The new Leistritz Feed Aid (LEH) increases extrusion throughput for materials with low bulk density.
(Bild: Leistritz)

For materials with low bulk density, the performance limit is often reached even before the actual extrusion process begins. Recycled films, foamed plastics, fibers, or powders can form bridges in the feed system or float on top of the screws. Although the extruder still has capacity to spare, not enough material enters the process.

The new Leistritz LEH feed aid feeds the material evenly from above onto both extruder screws and breaks up material bridges in the feed stream. The material is compacted only slightly during this process. This ensures that the material flow remains stable without placing additional lateral pressure on the extruder screws. This eliminates the need for separate pre-compaction.

Sixfold increase in throughput in the experiment

In a test run on a ZSE 50 Maxx, Leistritz processed polyolefin fluff with a bulk density of 25 g/l and particle sizes ranging from 1 to 5 cm. Without LEH, the system achieved a throughput of 40 kg/h; with LEH, it reached 240 kg/h. In further trials, materials with bulk densities of 40 and 75 g/l were processed. For the material with a bulk density of 75 g/l, it was no longer the feed rate that limited performance, but rather the machine’s available torque.

“With many lightweight materials, the problem isn’t the extruder’s performance, but rather the feed into the extruder,” says Daniel Nagl, managing director of Leistritz Extrusion Technology. “With the LEH, we prevent the feed from slowing down the system. This allows for better utilization of the machine’s existing capacity.”

The Leistritz feed aid is designed for materials with bulk densities below 100 g/l. It can also be used to precisely feed even lightweight particles whose dimensions exceed the pitch of the extruder screws. Without assisted feeding, such particles may float on top of the screws.

Leistritz will demonstrate the new feed aid live at Fakuma 2026 in Friedrichshafen using the ZSE 50 Maxx twin-screw extruder.

INFO

Leistritz at Fakuma 2026: Hall A6, Booth 6302

Attend Fakuma for free with PlastXnow? Simply enter the code on the registration page SUAGL-L28JU.

Subscribe to the newsletter now

Don't Miss out on Our Best Content

Business E-mail

Please enter a valid mailadress.

By clicking on „Subscribe to Newsletter“ I agree to the processing and use of my data according to the consent form (please expand for details) and accept the Terms of Use. For more information, please see our Privacy Policy. The consent declaration relates, among other things, to the sending of editorial newsletters by email and to data matching for marketing purposes with selected advertising partners (e.g., LinkedIn, Google, Meta).

Date: 08.12.2025

Naturally, we always handle your personal data responsibly. Any personal data we receive from you is processed in accordance with applicable data protection legislation. For detailed information please see our privacy policy.

Consent to the use of data for promotional purposes

I hereby consent to Vogel Communications Group GmbH & Co. KG, Max-Planck-Str. 7-9, 97082 Würzburg including any affiliated companies according to §§ 15 et seq. AktG (hereafter: Vogel Communications Group) using my e-mail address to send editorial newsletters. A list of all affiliated companies can be found here

Newsletter content may include all products and services of any companies mentioned above, including for example specialist journals and books, events and fairs as well as event-related products and services, print and digital media offers and services such as additional (editorial) newsletters, raffles, lead campaigns, market research both online and offline, specialist webportals and e-learning offers. In case my personal telephone number has also been collected, it may be used for offers of aforementioned products, for services of the companies mentioned above, and market research purposes.

Additionally, my consent also includes the processing of my email address and telephone number for data matching for marketing purposes with select advertising partners such as LinkedIn, Google, and Meta. For this, Vogel Communications Group may transmit said data in hashed form to the advertising partners who then use said data to determine whether I am also a member of the mentioned advertising partner portals. Vogel Communications Group uses this feature for the purposes of re-targeting (up-selling, cross-selling, and customer loyalty), generating so-called look-alike audiences for acquisition of new customers, and as basis for exclusion for on-going advertising campaigns. Further information can be found in section “data matching for marketing purposes”.

In case I access protected data on Internet portals of Vogel Communications Group including any affiliated companies according to §§ 15 et seq. AktG, I need to provide further data in order to register for the access to such content. In return for this free access to editorial content, my data may be used in accordance with this consent for the purposes stated here. This does not apply to data matching for marketing purposes.

Right of revocation

I understand that I can revoke my consent at will. My revocation does not change the lawfulness of data processing that was conducted based on my consent leading up to my revocation. One option to declare my revocation is to use the contact form found at https://contact.vogel.de. In case I no longer wish to receive certain newsletters, I have subscribed to, I can also click on the unsubscribe link included at the end of a newsletter. Further information regarding my right of revocation and the implementation of it as well as the consequences of my revocation can be found in the data protection declaration, section editorial newsletter.