TSE-26D Twin Screw Water Strand Pelletizing Line Delivered to a Research Institute in Fujian for Conductive Carbon Black

Project Overview

HLD custom-supplied a set of TSE-26D co-rotating twin-screw water strand pelletizing production line to a research institute in Fujian. Designed for laboratory formula development and new material modification R&D, this equipment focuses on composite modification and pelletizing of resin systems including PS, PC, PET and PP. It has been successfully delivered to support the institute’s R&D of special filled materials.

Core Technical Parameters

• Model: TSE-26D Co-rotating Twin Screw Extrusion Pelletizing Line
• Screw Diameter: 26 mm
• L/D Ratio: 44:1
• Max. Screw Speed: 600 rpm
• Barrel Sections: 11 sections
• Main Motor Power: 7.5 kW
• Pelletizer Power: 0.37 kW
• Integrated Dryer & Water Tank Length: 3 m
• Output: about 3–30 kg/h (varies with formulations)
• Finished Pellet Color: Mainly white or orange, customizable
• Power Supply: 3-phase 380V 50Hz (3 live wires + 1 neutral wire + 1 earth wire for Fujian site)

Process Features (Highlights)

This production line is specialized in formulation development of conductive carbon black filled modification. It can be compounded with fillers such as conductive carbon black and calcium carbonate, and supports independent pelletizing for different resin systems of PS/PC/PET/PP. It is capable of high loading conductive carbon black formulations: filling ratio up to 20~30%, around 15% for regular formulations. All raw materials are pre-mixed in the high-speed mixer before pelletizing to guarantee uniform dispersion of fillers in the resin matrix.

Water strand cutting process is adopted with a graded cooling system:

1. The barrel is cooled by industrial soft water (deionized water); circulating water pressure ~0.45MPa, water temperature ≤38℃ to prevent scale formation inside the barrel;
2. External circulating water is used to cool the internal circulating water and water trough;
3. Water supply recommendation: build a 25~30m³ water storage tank outside the workshop for stable water pumping, to maintain stable cooling conditions and controllable temperature during processing high-filling formulations.

Complete Scope of Supply

1. High Speed Mixer: 1 set
2. Twin Screw Metering Feeder: 1 set
3. TSE-26D Twin Screw Extruder: 1 set
4. PLC Electrical Control System: 1 set
5. Water Strand Pelletizing System: 1 set

Project Value

The TSE-26D is a lab/pilot-scale extrusion line with flexible adjustable output, perfectly matching the new material R&D requirements of research institutes. It enables fast development of conductive modified formulations based on PS/PC/PET/PP, and performance comparison under different filling ratios. Equipped with modular screw design, precise temperature control and pre-mixing feeding unit, it helps the institute shorten the trial cycle of new materials, stabilize pellet quality and support scientific research and small-batch trial production of conductive polymer composites.