Chinaplas 2023: Coperion and Herbold display compounding/recycling solutions and for production of bioplastics

Machine maker Coperion GmbH, Stuttgart/Germany, will showcase its expertise in plastics recycling at its Booth 10K31 in Hall 10 with a virtual complete system for recycling PET. This plant allows a look inside numerous key components from Coperion and recently acquired partner Herbold Meckesheim, with whom Coperion now offers complete systems for plastics recycling.

In terms of its conventional compounding systems, the ZSK 58 Mc18 twin-screw extruder, with a specific torque of 18 Nm/cm³ that will be on display, has been locally assembled at Coperion’s manufacturing site in Nanjing, China. With the assembly in China, Coperion is able to meet to customer demand, such as faster service and parts.

The extruder will be fitted with a Coperion K-Tron K-MLSFS-KT20 twin-screw loss-in-weight feeder.

Coperion and Herbold display compounding/recycling solutions and for production of bioplastics

In addition to compounding and recycling, Coperion extruders are suitable for the production of bioplastics. This process places high demands on the extrusion system due to the diversity of base polymers being used and the variety of recipes. Coperion says it has already realised numerous systems for the production of bioplastics and therefore has know-how in designing the process steps needed to achieve the required mechanical properties of the bioplastic end product.

The STS 25 Mc11 laboratory extruder that Coperion will show at Chinaplas, has a 25 mm screw diameter and features a simple design. It is operator-friendly and easy to clean.

By having the same screw diameter ratio and the same maximum specific torque as the entire STS Mc11 extruder series, production parameters can be reliably scaled up to a larger STS model.

To extend the process window, Coperion has increased the screw speed of the STS 25 Mc11. Thus, the laboratory extruder is ideally suited for recipe development and basic research with small batch sizes of 2 kg and achieves throughput rates of up to 110 kg/hour.

Also on display will be a Coperion K-Tron K2-ML-D5-T35/ S60 quick change feeder, featuring the ActiFlow smart bulk solid activator and Electronic Pressure Compensation (EPC) in combination with a 2400 Series vacuum receiver for refill.

The T35/S60 quick change feeder (QC) on display is designed for applications requiring quick changeover of materials and convenience of fast cleaning. The QC feeder allows for fast removal of the entire feeding module with screws in place for replacement with a second unit. Twin and single-screw feeding modules are available.

The ActiFlow smart bulk solid activator offers an innovative method to reliably prevent bridging and rat-holing of cohesive bulk materials in stainless steel hoppers without internal hopper agitation. The smart flow aid applies gentle vibrations to the hopper wall, hereby carefully activating the contained material with the optimal amplitude and frequency. It is designed specifically to work with Coperion K-Tron’s line of gravimetric loss-in-weight feeders.

As well, the 2400 Series vacuum receivers provide a high-capacity sequencing system primarily used where larger conveying rates or long distances are required, in applications with one or multiple destinations. They are designed to high quality standards for pneumatically conveying powder, pellets and granular materials for most industries. Conveying rates range from 327 to 6,804 kg/hour. The 2415 pellet receiver will be on display at Chinaplas 2023.


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