I D
× COMMENTARYEDITOR'S PAGECOVER STORYIN THE NEWSNEWSFRONTSCHEMENTATOR + Show More
Chemical Engineering MagazineChementator Briefs
Nanofiltration Toray Industries, Inc. (Tokyo, Japan; www.toray.com) has created what…
BUSINESS NEWSTECHNICAL & PRACTICALFEATURE REPORTFACTS AT YOUR FINGERTIPSTECHNOLOGY PROFILEEQUIPMENT & SERVICESFOCUSNEW PRODUCTS + Show More SHOW PREVIEWS

Comment

A new spin on vacuum degassing of polymer melts

By Chemical Engineering |

Gneuss Kunststofftechnik GmbH (Bad Oeynhausen, Germany; edlinks.chemengonline.com/6899-541) has developed a patented technology that significantly increases the surface exchange of molten polymers during vacuum degassing — a technique used to remove residual water and monomers during polymer processing. Compared with conventional twin-screw extruder systems, the Multi Rotation System (MRS) provides up to 300% more surface contact with the polymer melt, says marketing manager Cristel Gneuss. Polymer melt is fed to a large, single-screw drum of the MRS. The drum contains 8 or 10 (depending on the size) small extruder barrels (photo) aligned parallel to the main screw axis. Satellite screws, installed in these small extruder barrels, are driven by a ring gear on the main barrel causing them to rotate in the opposite direction of the main screw. As the polymer melt passes down the drum, it undergoes about 25 times more surface exchanges in the MRS compared to a similarly sized twin-screw extruder, says Gneuss. As a result, the system is able to completely remove water while increasing the intrinsic viscosity of PET within the evacuation section of the MRS, says the company. The MRS will be launched to the world market at the K…
Related Content
Business News: September 2019
Plant Watch Ineos breaks ground for Bayport ASA plant August 12, 2019 — Ineos Styrolution GmbH (Frankfurt, Germany; www.ineos-styrolution.com) hosted…
Business News – August 2019
Plant Watch Oxea to build new carboxylic acids plant in Germany July 6, 2019 —Oxea (Monheim am Rhein, Germany; www.oxea-chemicals.com)…
Business News – July 2019
Plant Watch Bilfinger wins €60-million contract from SABIC May 23, 2019 — Bilfinger SE (Mannheim, Germany www.bilfinger.com) has been chosen…
Business News
Plant Watch Perstorp will construct new plant for sodium formate deicer product May 9, 2019 — Perstorp AB (Perstorp, Sweden;…
Business News – May 2019
Plant Watch Arkema starts up photocure resin expansion in China April 11, 2019 — Arkema (Colombes, France; www.arkema.com) started up…

Chemical Engineering publishes FREE eletters that bring our original content to our readers in an easily accessible email format about once a week.
Subscribe Now
How separation processes profit from Industrial Internet of Things (IIoT) solutions
Up to 80% increased production rates in plastic recycling
Higher throughput and purity in sodium bicarbonate production with up to 15% less energy consumption
Help feeding nations with chemical filtering technologies
Not at the forefront of Industry 4.0?

View More

Live chat by BoldChat