Twin Tandem PCR
Recycling Technologies
General Features
Bandera Twin Tandem PCR® – Recycling of Challenging Polyolefin PCR Waste
Bandera Twin Tandem PCR® is an advanced recycling extrusion system developed for polyolefin recycling, particularly for processing heavily contaminated, heavily printed and variable PCR (Post-Consumer Recycling) materials.
The system consists of two co-rotating twin-screw extruders operating in a cascade configuration. Thanks to dual dosing stations and side feeders, raw materials with different characteristics can be introduced into the process in a controlled manner, allowing the line to be customized according to the incoming feedstock.
Two Twin-Screw Extruders in Cascade Configuration
The core of Twin Tandem PCR® consists of two co-rotating twin-screw extruders operating in a cascade configuration.
This structure enables filtration, degassing and material processing conditions to be optimized independently at different stages of the process, providing a flexible process configuration for recycling more challenging PCR feedstocks.
High Level of Process Customization
Twin Tandem PCR® can be configured according to the characteristics of the incoming raw material and the requirements of the recycling process.
Dual dosing stations and side feeders enable different materials to be introduced into the process in a controlled manner. This configuration provides flexibility when processing PCR feedstocks with different physical characteristics and variable compositions.
Recycling of Heavily Contaminated PCR Materials
Twin Tandem PCR® has been developed particularly for processing PCR feedstocks with higher contamination levels.
The cascade configuration allows the filtration strategy to be adapted according to the contamination level of the material and the line configuration.
For this reason, the system can be used for more challenging recycling feedstocks such as:
- Heavily contaminated PCR materials
- Heavily printed materials
- Metallized materials
- Heterogeneous polyolefin waste
Advanced Filtration Flexibility
The cascade structure of Twin Tandem PCR® enables the filtration system to be adapted according to the characteristics of the processed feedstock.
Particularly for materials with high contamination levels, the filtration strategy can be optimized according to process requirements and the equipment configuration used.
Effective Degassing with Dual Degassing
The tandem configuration provides two-stage degassing capability.
The dual degassing system helps remove volatile components and moisture. It also provides an advanced process solution for managing volatile components that may be generated during the processing of heavily printed materials.
High Homogenization Performance
Twin Tandem PCR® is designed for the effective mixing of polymer structures that may have different or mutually incompatible characteristics.
The dual-extruder configuration supports material homogenization and contributes to controlled processing of the recycled raw material throughout the process.
Low Shear Stress
The process structure is designed to maintain a low level of friction within the melt, allowing the material to be processed in a more controlled and gentle manner.
This feature contributes to maintaining process control when processing recycling feedstocks with different characteristics.
Materials Processable with Twin Tandem PCR®
Twin Tandem PCR® can be configured for processing different polyolefin PCR sources.
Main applications include:
- HDPE PCR
- PP PCR
- PS PCR
- PC/ABS PCR
- Heavily printed metallized materials
- Heavily contaminated PCR materials
- Flexible film PCR
- Agricultural films (Agri Films)
- Geomembrane / Geo Films
PC/ABS PCR applications may include materials originating from automotive or WEEE (Waste Electrical and Electronic Equipment) sources.
Twin Tandem PCR® Models and Capacities
| Model | Capacity |
|---|---|
| Twin Tandem PCR 105 | 650 – 1,000 kg/h |
| Twin Tandem PCR 135 | 1,000 – 2,000 kg/h |
| Twin Tandem PCR 170 | 2,100 – 3,000 kg/h |
Capacities may vary depending on the characteristics of the processed feedstock and the line configuration. Bandera's official product information specifies three Twin Tandem PCR models covering a capacity range of 650–3,000 kg/h.
Difference Between Twin PCR and Twin Tandem PCR
Within Bandera's Polyolefin PCR product family, Twin PCR® and Twin Tandem PCR® provide solutions for different process requirements.
Twin PCR® is a flexible system designed for recycling different PCR feedstocks such as HDPE, PP, PS, PC/ABS and flexible film PCR.
Twin Tandem PCR®, on the other hand, provides more advanced process flexibility for heavily contaminated, heavily printed, metallized and more challenging PCR feedstocks through two co-rotating twin-screw extruders operating in a cascade configuration.
This configuration stands out with dual degassing, adaptable filtration, high homogenization performance and a dual dosing/side-feeding system that allows different raw materials to be introduced into the process.
Bandera Twin Tandem PCR® – Advanced Recycling Technology for Challenging PCR Waste
Bandera Twin Tandem PCR® – Recycling Technology for Heavily Contaminated and Challenging Polyolefin PCR Waste, Backed by Somplast.
Twin Tandem PCR
