Three-Extruder Coextrusion System
Three-Extruder Coextrusion Die
Aerosol Dip Tube Extrusion Line
Multilayer tubing extrusion lines provide continuous production of medical tubing made up of two or more layers. The required tube structure determines how the extrusion line is configured, including the number and size of the extruders and the multilayer coextrusion die used. During coextrusion, different polymers or several layers of the same polymer (usually PVC, TPU, etc.) are formed into a single tube. Multilayer extrusion systema are suitable to manufacture products such as light-blocking infusion tubes and other medical tubing that relies on a multilayer structure.
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Materials Processed
PVC, TPU, Other medical-grade polymers
Finished Product Samples
PVC Multilayer Tubing
TPU Multilayer Tubing
Technical Specifications for Dual-Layer Extrusion Line
| Model | Screw Configuration | Power Consumption | Capacity | Overall Dimensions (L × W × H) |
| Ø45 mm × 28:1 Ø30 mm × 28:1 |
9 kW | 15–45 kg/h | 9500 × 2500 × 1780 mm | |
| Ø50 mm, L/D 28:1 Ø30 mm, L/D 28:1 |
10 kW | 20–55 kg/h | 13000 × 2500 × 1780 mm | |
| Ø55 mm, L/D 28:1 Ø30 mm, L/D 28:1 |
12 kW | 20–65 kg/h | 13000 × 2500 × 1780 mm |
Features
- Our multilayer tubing extrusion lines have mirror-polished and degreased surfaces along the screw and die-head flow paths to prevent oil or residue from dripping onto the tubing.
- Their direct-drive servo motor transfers power smoothly to the extruder without belts or chains, which removes a potential source of lubricant splashes near the tubing.
- Closed-loop controls check the extrusion pressure and tube diameter throughout production. If any of the parameters change or drifts from the set value, the extrusion settings are adjusted right away to keep the finished tubing consistent.
- The screw and barrel are made from nitrided 38CrMoAlA steel, while the die head and tooling are made from corrosion-resistant S136 mirror-finish mold steel.
- Each extruder has independent, multi-zone closed-loop temperature control with an accuracy of ±1°C. The finished tubing can maintain an outer-diameter tolerance of ±0.05 mm, while the coextruded layers remain even and properly aligned.
Machine Details
