In the demanding cable and wire industry, producing consistent, high-quality compounds for PVC insulation/sheathing, low-smoke halogen-free (LSZH/HFFR), 10–35 kV chemically cross-linked PE (XLPE), and semi-conductive shielding materials requires exceptional mixing uniformity, precise temperature control, and outstanding energy efficiency. The RLB Two Stage Reciprocating & Single Screw Pelletizing Line (also known as the reciprocating kneader + single-screw tandem pelletizing unit) is specifically engineered to meet these challenges while delivering up to 25 % energy savings compared to conventional extruders.
This advanced two-stage system combines a high-intensity reciprocating single-screw mixer (first stage) with a low-shear single-screw extruder (second stage) connected via T-type distribution. The reciprocating motion provides powerful radial and axial mixing, short material residence time, high filler loading capacity, and superior self-cleaning performance — ensuring uniform dispersion without temperature peaks that could degrade sensitive polymers.
Principaux avantages en matière d'ingénierie
- Superior Mixing Performance: Both radial and axial mixing action plus excellent injection of liquid additives deliver homogeneous compounds with minimal shear heat.
- Energy-Efficient Design: Proven 25 % lower power consumption than standard extruders while maintaining high throughput.
- Precise Temperature Control: No melting temperature peaks — critical for heat-sensitive materials like LSZH and XLPE.
- High Filling Capacity & Quick Changeover: Excellent self-cleaning properties and short conversion time maximize equipment utilization and reduce downtime.
- Fully Automated System: Gravimetric weighing for granules/powders, forced feeding, and precise liquid dosing combined with MMI + PLC control for recipe storage, real-time monitoring, and simple operation.
- Flexible Downstream Options: Water-ring cutting, eccentric water-mist cutting, plus various packaging solutions (bin collecting, ton-bag, automatic weighing & bagging).
The result is high-quality, dust-free pellets with excellent flow characteristics and consistent physical properties — exactly what cable manufacturers need for high-voltage, flame-retardant, and specialty applications.
Technical Specifications (RLB Two Stage Reciprocating & Single Screw Pelletizing Line)
| Modèle | Reciprocating Screw Dia. (mm) | Reciprocating Screw Speed (rpm) | Reciprocating L/D | Reciprocating Motor Power (kW) | Débit (kg/h) | Single Screw Dia. (mm) | Single Screw Speed (rpm) | Single L/D | Single Motor Power (kW) |
|---|
| RLB-140/200 | 140 | 250/400 | 15 | 160–200 | 1000–1300 | 200 | 65/85 | 7–10 | 75 |
| RLB-58/100 | 58 | 400/500 | 15 | 30–45 | 100–200 | 100 | 65/85 | 7–10 | 37 |
| RLB-85/180 | 85 | 400/500 | 15 | 160–200 | 800–1500 | 180 | 65/85 | 7–10 | 55–75 |
| RLB-120/220 | 120 | 400/500 | 15 | 280–400 | 1800–3000 | 220 | 65/85 | 7–10 | 90–110 |
Higher-capacity custom models available upon request.
Applications principales
- PVC cable compounds (insulation and sheathing)
- Low-smoke halogen-free (LSZH / HFFR) cable materials
- 10–35 kV chemically cross-linked PE (XLPE) compounds
- Semi-conductive shielding compounds
- Other high-filler or reactive cable-grade compounds
The RLB reciprocating two-stage pelletizing line is the ideal choice for cable manufacturers seeking higher output, lower energy costs, superior compound quality, and rapid product changeovers.
Engineered for Reliability, Efficiency & Long-Term ROI
Fabriqué par RLB (Jiangsu Reliable Industry Co., Ltd.) — a trusted fournisseur de machines pour câbles et fils — every component of this Two Stage Reciprocating & Single Screw Pelletizing Line is built for 24/7 continuous operation with minimal maintenance. Compared to conventional single-screw or twin-screw systems, the RLB reciprocating design offers:
- Up to 25% energy savings
- Superior filler dispersion and homogeneity
- No thermal degradation of sensitive materials
- Significantly reduced scrap and faster grade changeovers
Whether you produce standard PVC compounds or premium LSZH/XLPE materials for high-voltage cables, this cable compound pelletizing line delivers the performance, flexibility, and long-term reliability modern compound producers demand.
Ready to optimize your cable compound production with 25% energy savings?
Demande d'informations for technical quotation, custom configuration, layout design, or factory visit. Our engineering team provides full turnkey solutions, installation support, operator training, and ongoing technical partnership.
Two Stage Reciprocating & Single Screw Pelletizing Line - Reliable Doing Cable
High-performance Two Stage Reciprocating & Single Screw Pelletizing Line — advanced reciprocating kneader pelletizer for consistent PVC, LSZH and XLPE cable compounds with 25% energy savings.
SKU du produit: RLB-140/200
Marque de produit: Machines RLB
Devise: USD
Prix du produit: Contactez-nous pour un devis
Produit en stock: En stock
Note de l’éditeur/éditrice : 4.9 
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