RECYCLING AND COMPOUNDING | TECHNOLOGY
regrind with very good flow characteristics, low fines percentage, and high bulk density that can be easily reintroduced into the process.” Also at Fakuma will be Coperion’s ZSK and STS
twin screw extruders. At the Chinaplas trade fair earlier this year, Coperion showed an STS 25 Mc11 laboratory extruder with a 25 mm screw diameter with and Do/Di of 1.55 and maximum specific torque of Md/a3 of 11.3 Nm/cm3. Screw speed of the unit was increased to 1,200 min-1 which allowed for development of recipes with small batch sizes of 2 kg but operating at throughput rates up to 110 kg/h. The unit was shown with a C/S-LW-NT28 twin screw loss-in-weight feeder from Colormax Systems. Coperion also displayed a ZSK 58 Mc58 twin
screw extruder with a Coperion K-Tron K-ML-SFS- KT20 twin screw loss-in-weight feeder suitable for the production of bioplastics. “This process places very high demands on the extrusion system due to the diversity of base polymers being used and the variety of recipes,” Coperion says. The company has accumulated engineering know-how from biopastics systems it has already installed. Other twin-screw extruder makers have been making further progress in the wider compounding sector. Jiangsu Xinda Tech, a China-based designer and manufacturer of compounding and recycling equipment last year delivered two 95 mm co-rotating twin-screw extruder compounding lines to a leading European TPE producer. According to the company, the compounding lines include an automatic material handling system, loss-in-weight feeders, gear pump, double-piston screen changer and underwater pelletising system. Each com- pounding line can produce over 1,000 kg/hr of high quality TPE elastomers. Xinda says the two lines deliver fully automatic material handling, dosing, extruding and pelletising with excellent kneading efficiency. In addition to producing co-kneader and
co-rotating twin screw extruder technologies, Xinda produces laboratory extruders, underwater pelletis- ers, recycling equipment such as washing lines and ancillary equipment. It has established representa- tives in Europe, include France, Poland and Turkey, and has a presence in the Americas in Mexico and Brazil, and has contacts in India, Thailand and Russia. Twin-screw extruder company Entek Manufac-
turing, which also makes plastics recycling extrud- ers, has announced an upgrade to its Screw Layout Designer software program that makes it easier for customers to design optimum screw and barrel configurations for its twin-screw extruders. The original program, launched in 2018, enabled
www.plasticsrecyclingworld.com
IMAGE: COPERION
Coperion says its ZSK twin screw extruders are equipped with numerous new features that ensure high- efficiency plastics compounding
customers to input screw and barrel layouts to create optimum screw configurations for specific twin-screw extruder applications. After inputting all relevant data, the program produces both visual drawings and spreadsheet layouts. The software has several built-in features, such
as drag-and-drop functionality on all components that customers need to specify, such as barrel sections, screws and metallurgy. It also enables automatic calculation of remaining space on the screw shafts and has safeguards that prevent incorrect installation of certain elements. New features of Screw Layout Designer 2.0 include a visual showing of metallurgy for barrels and screws, with key at bottom, pop-up warnings triggered by incompatibilities as they occur in the layout which are listed on the printed or saved layouts, the ability to include materials and item numbers on printed or saved layouts to facilitate ordering of replacement parts and the ability to easily change settings for extruder diameter and length. The Screw Layout Designer 2.0 program is for use with all Entek twin-screw models, according to Tammy Straw, Director of Entek’s Wear Parts Division and project lead on the software pro- gram’s upgrade. “This updated program addresses the most common request and makes it easier than ever to design screw configurations for specific applications,” Straw says.
CLICK ON THE LINKS FOR MORE INFORMATION: �
www.erema.com �
www.pureloop.com �
www.lindner.com �
www.coperion.com �
www.herbold.com �
www.xindacorp.com �
https://entek.com
October 2023 | PLASTICS RECYCLING WORLD 27
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 |
Page 55 |
Page 56 |
Page 57 |
Page 58
