The SJN(GX)-90 Sheathing Line emerges as a versatile workhorse in cable manufacturing, specialized for extruding thermoplastic sheaths on cables and wires with exceptional efficiency.
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At its core is a 90mm high-torque screw (25:1 L/D ratio) crafted from nitrided alloy steel, paired with a high-performance drive system that achieves output rates of up to 600 kg/h for PE, PVC, and TPE materials. A standout feature is its self-cleaning barrel design—equipped with helical grooves and reverse-threaded sections—that reduces resin buildup, cutting downtime between material changes by 40%. Its precision die head (crosshead or side-feed) ensures tight diameter control (±0.03mm), critical for meeting strict industry standards.
Screw Diameter: 90mm (nitrided 38CrMoAlA steel, surface hardness HV900)
Length-to-Diameter Ratio: 28:1 (with mixing sections for material homogenization)
Maximum Output: 600 kg/h (PE), 500 kg/h (PVC), 450 kg/h (TPE)
Material Compatibility: PE, PVC, TPE, XLPE (with temperature adjustments)
Power Consumption: 180 kW (with IE4 premium efficiency motors)
Control System: Siemens S7-1200 PLC with 10-inch color HMI
Die Head Type: Swappable crosshead (for multi-core) or side-feed (for single-core)
Cooling System: Air/water hybrid (first stage air cooling, second stage water bath)
Power Cables:
Ideal for low-voltage (LV: 0.6/1kV) and medium-voltage (MV: 6–10kV) power cables, producing abrasion-resistant sheaths with tensile strength ≥12MPa and elongation at break ≥200% (per IEC 60811-1-1).
Telecom Cables:
Supports fiber optic cable sheathing (microducts, loose tubes), offering UV resistance (per ISO 4892-3) and moisture barrier properties to protect sensitive optical fibers.
Building Wires:
Meets demands of residential and commercial wiring (e.g., NYM, H07V-K cables), with flame-retardant sheaths compliant with UL 1581 (vertical flame test) and BS 6346 (fire performance).
Automotive Wires:
Produces oil-resistant sheaths (fluoropolymer or special PVC) for automotive harnesses, withstanding temperatures up to 125°C and resisting degradation from engine oils and coolants (per ISO 6722-1).
Q: What is the maximum sheath thickness achievable?
A: The line can extrude sheaths up to 5mm thick, with uniform wall thickness across the cable circumference (variation ≤5%) thanks to the precision die design and pressure feedback control.
Q: How long does it take to clean the barrel between materials?
A: The self-cleaning barrel design—with helical grooves that scrape residual material—reduces cleaning time to 15–20 minutes, compared to 45–60 minutes for conventional lines.
Q: Does the line include quality control sensors?
A: Yes, it integrates laser diameter measurement (accuracy ±0.01mm) and online spark testing (3kV–15kV adjustable) to detect pinholes or thickness variations in real time, ensuring 100% quality inspection.
Q: Can it process recycled materials?
A: Yes, the high-torque screw design and enhanced mixing sections allow processing of post-industrial recycled plastics (up to 30% content) without compromising sheath quality, supporting sustainable manufacturing goals.
| Technical Specifications | Parameters |
| Core diameter | Ф10~45mm |
| Outer diameter after extrusion | Ф15~50mm |
| Designed speed (maximum) | 120m/min |
| Equipment center Height | 1000mm |
| Payoff bobbin specification | PN1250~PN2500 |
| Takeup bobbin specification | PN1250-PN2500 |
| Screw Diameter | Ф90mm |
| L/D ratio | 25:1 |
| Maximum screw rotation speed | 90r/min |
| Maximum output | 400kg/h 士5%(PVC): 200~450Kg/h (LSZH, normal C grade ) |
| Voltage Rating | 3-phase 5-wire, ~380V/50Hz |
At its core is a 90mm high-torque screw (25:1 L/D ratio) crafted from nitrided alloy steel, paired with a high-performance drive system that achieves output rates of up to 600 kg/h for PE, PVC, and TPE materials. A standout feature is its self-cleaning barrel design—equipped with helical grooves and reverse-threaded sections—that reduces resin buildup, cutting downtime between material changes by 40%. Its precision die head (crosshead or side-feed) ensures tight diameter control (±0.03mm), critical for meeting strict industry standards.
Screw Diameter: 90mm (nitrided 38CrMoAlA steel, surface hardness HV900)
Length-to-Diameter Ratio: 28:1 (with mixing sections for material homogenization)
Maximum Output: 600 kg/h (PE), 500 kg/h (PVC), 450 kg/h (TPE)
Material Compatibility: PE, PVC, TPE, XLPE (with temperature adjustments)
Power Consumption: 180 kW (with IE4 premium efficiency motors)
Control System: Siemens S7-1200 PLC with 10-inch color HMI
Die Head Type: Swappable crosshead (for multi-core) or side-feed (for single-core)
Cooling System: Air/water hybrid (first stage air cooling, second stage water bath)
Power Cables:
Ideal for low-voltage (LV: 0.6/1kV) and medium-voltage (MV: 6–10kV) power cables, producing abrasion-resistant sheaths with tensile strength ≥12MPa and elongation at break ≥200% (per IEC 60811-1-1).
Telecom Cables:
Supports fiber optic cable sheathing (microducts, loose tubes), offering UV resistance (per ISO 4892-3) and moisture barrier properties to protect sensitive optical fibers.
Building Wires:
Meets demands of residential and commercial wiring (e.g., NYM, H07V-K cables), with flame-retardant sheaths compliant with UL 1581 (vertical flame test) and BS 6346 (fire performance).
Automotive Wires:
Produces oil-resistant sheaths (fluoropolymer or special PVC) for automotive harnesses, withstanding temperatures up to 125°C and resisting degradation from engine oils and coolants (per ISO 6722-1).
Q: What is the maximum sheath thickness achievable?
A: The line can extrude sheaths up to 5mm thick, with uniform wall thickness across the cable circumference (variation ≤5%) thanks to the precision die design and pressure feedback control.
Q: How long does it take to clean the barrel between materials?
A: The self-cleaning barrel design—with helical grooves that scrape residual material—reduces cleaning time to 15–20 minutes, compared to 45–60 minutes for conventional lines.
Q: Does the line include quality control sensors?
A: Yes, it integrates laser diameter measurement (accuracy ±0.01mm) and online spark testing (3kV–15kV adjustable) to detect pinholes or thickness variations in real time, ensuring 100% quality inspection.
Q: Can it process recycled materials?
A: Yes, the high-torque screw design and enhanced mixing sections allow processing of post-industrial recycled plastics (up to 30% content) without compromising sheath quality, supporting sustainable manufacturing goals.
| Technical Specifications | Parameters |
| Core diameter | Ф10~45mm |
| Outer diameter after extrusion | Ф15~50mm |
| Designed speed (maximum) | 120m/min |
| Equipment center Height | 1000mm |
| Payoff bobbin specification | PN1250~PN2500 |
| Takeup bobbin specification | PN1250-PN2500 |
| Screw Diameter | Ф90mm |
| L/D ratio | 25:1 |
| Maximum screw rotation speed | 90r/min |
| Maximum output | 400kg/h 士5%(PVC): 200~450Kg/h (LSZH, normal C grade ) |
| Voltage Rating | 3-phase 5-wire, ~380V/50Hz |
