Wire and cable material manufacturing imposes stringent requirements on extrusion pelletizing equipment. Low‑smoke zero‑halogen (LSZH), XLPE cross‑linked, silane cross‑linkable and thermoplastic shielding compounds are mostly heat‑sensitive, high‑fill formulations. Improper equipment selection easily triggers pre‑crosslinking, material scorching, poor additive dispersion, bubble defects and unstable batch‑to‑batch pellet quality, which will directly degrade cable insulation performance and bring huge economic loss for cable material producers.
Founded in 2017, Nanjing Yuzun Machinery (brand: NEOPLAS) is a full‑solution manufacturer for polymer extrusion and pelletizing equipment. We own two manufacturing bases in Chuzhou Anhui and Xingtai Hebei. Our product portfolio includes TSB/TSH co‑rotating twin‑screw extruder, SDJ two‑stage twin‑single‑screw unit, TTS triple‑screw extruder, automatic gravimetric batching system, complete auxiliary machines and full‑range extruder spare‑parts. Our pelletizing lines are widely deployed across more than 20 Chinese provinces and exported to over 10 overseas countries including India, Indonesia, Russia, Vietnam, Iran, Japan and South Korea.
This blog explains suitable host types, core advantages, key auxiliary configurations and real‑world cable‑industry project references, helping global cable‑compound manufacturers pick proper pelletizing equipment.
1. Extruder Host Selection for Different Cable‑Grade Compounds
TSB / TSH Co‑Rotating Twin‑Screw Extruder Series
TSB/TSH twin‑screw extruder adopts modular combinable screw‑element layout. Independent multi‑zone temperature control plus deep‑vacuum devolatilization realize uniform kneading and stable batch consistency.
Core Advantages‑ Modular screw configuration to adapt diverse cable‑material recipes
‑ Powerful shearing and outstanding dispersion for additives, fillers and pigments
‑ Good self‑wiping performance to reduce material residual and cross‑contamination during grade change
‑ Segmented precise temperature control and high‑efficiency vacuum devolatilization to remove volatile by‑products
Typical Cable‑Material ApplicationsPE sheath compound, UV‑crosslinkable cable material, general‑purpose modified cable filler, ordinary functional masterbatch.
Available models cover lab‑scale TSB‑36 for formula R&D up to large‑capacity TSH‑115 for mass continuous production.
SDJ Two‑Stage Twin‑Screw + Single‑Screw Pelletizing Unit
For heat‑sensitive cable compounds such as PVC, LSZH‑low‑smoke halogen‑free, XLPE cross‑linked and silane cross‑linkable material, single‑stage extruders often cause thermal degradation under high die‑head back‑pressure. SDJ two‑stage system uses T‑shaped layout: the first‑stage twin‑screw completes intensive mixing and plasticizing; the second‑stage low‑speed single‑screw builds extrusion pressure with low‑shear processing.
Core Advantages‑ Separate mixing and pressure‑building process, effectively suppress yellowing, scorching and premature cross‑linking of heat‑sensitive cable‑grade polymers
‑ Independent speed & temperature adjustment for each stage for higher process flexibility
‑ Support large‑capacity devolatilization, remove moisture and small‑molecule by‑products
Typical Cable‑Material ApplicationsPVC cable compound, XLPE peroxide‑crosslinked material, silane cross‑linkable A/B two‑component material, low‑smoke halogen‑free flame‑retardant cable granules, thermoplastic shielding compound.
TTS Parallel Triple‑Screw Extruder
TTS triple‑screw extruder increases barrel free volume by 35 % compared with equal‑diameter twin‑screw equipment. It delivers superior powder intake capacity and better dispersion performance for high‑loading filler formulations.
Core Advantages‑ Strong feeding capacity for high‑proportion powder additives such as aluminium hydroxide, magnesium hydroxide and carbon‑black
‑ Excellent distributive mixing for high‑fill flame‑retardant and shielding cable‑grade compounds
‑ Higher throughput under same machine footprint
Typical Cable‑Material ApplicationsHigh‑fill low‑smoke halogen‑free cable compound, high‑concentration carbon‑black shielding masterbatch, special‑functional cable‑grade modifier.
2. Indispensable Auxiliary Systems for Cable‑Material Production
Stable cable‑compound quality cannot rely only on extruder host. Matching auxiliary systems determine final pellet performance. Nanjing Yuzun Machinery supplies one‑stop complete‑line supporting solutions:
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Automatic gravimetric batching & loss‑in‑weight feeding system: Handle powder, pellet and liquid additives for cable‑material formulas. Realize high‑precision continuous metering, closed‑loop whole‑line linkage, avoid manual weighing error and dust pollution.
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Material conveying & mixing unit: Vacuum closed conveying reduces human intervention, prevent raw‑material contamination.
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Cooling, dehydration & vibrating screening system: Adapt water‑ring hot‑face cutting or strand pelletizing process. Strictly control pellet moisture content, sieve out defective particles to guarantee consistent pellet appearance for cable‑grade usage.
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Intelligent electrical control system: Optional multi‑language PLC / PCC touch‑screen control, support remote monitoring and online‑operation maintenance, fit overseas factories with multi‑lingual operator environment.
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Full‑range spare‑parts supply: Screw elements, spline shafts, barrels, die‑face hot‑cut assemblies, heater bands and electrical components in stock; custom spare‑parts for old‑model extruders are supported to minimize production downtime.
Real‑World Cable‑Industry Project Cases
Case 1: Large‑Scale Cable Manufacturer in Mumbai, IndiaThis local Indian cable enterprise produces silane cross‑linkable power‑cable compounds facing pre‑crosslinking and pellet‑quality fluctuation pain‑points. We delivered SDJ95‑250 two‑stage unit for A‑material and TSH‑65 twin‑screw extruder for catalytic B‑masterbatch. Equipped with large‑range loss‑in‑weight feeders and Siemens PLC control system, this production line solves pre‑crosslinking and scorching risks under local high‑temperature‑humidity workshop condition. Final pellets feature uniform granularity, low moisture content and have fully passed customer acceptance.
Case 2: Yaxing Cable Group, Hebei, ChinaAs a large high‑tech cable manufacturer, Yaxing Cable required mass stable UV‑irradiation cross‑linkable cable‑material output. We built a one‑drag‑two automatic batching and pelletizing complete line. Raw materials are precisely proportioned by gravimetric feeding system and diverted into two TSH twin‑screw extruders for synchronous compounding and pelletizing. This solution greatly improves batch consistency for large‑volume cable‑material continuous production.
Key Points When Sourcing Cable‑Compound Pelletizing Equipment
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Match extruder host to your cable‑material formulation:
Use standard TSB/TSH twin‑screw for PE sheath and general modification; select SDJ two‑stage unit for heat‑sensitive LSZH, XLPE and silane cross‑linkable compounds; adopt TTS triple‑screw extruder for ultra‑high‑fill flame‑retardant or carbon‑black shielding formulations. -
Pay high attention to feeding & devolatilization performance:
High‑precision loss‑in‑weight feeding and reliable vacuum devolatilization are critical for cable‑grade material to eliminate bubbles and unstable additive ratio. -
Define target throughput and running mode:
Confirm intermittent batch production or 24‑hours full‑load continuous operation, to properly decide model size, motor power and downstream auxiliary configuration. -
Evaluate supplier’s cable‑process know‑how:
Prioritize manufacturers with abundant cable‑material project experience, who can provide screw‑element layout suggestion, formula‑oriented process debugging and overseas after‑sales support. -
Confirm spare‑parts availability:
Adequate spare‑parts inventory effectively shortens unexpected production halt caused by wearing components.
FAQ
Q1: Which extruder type is most suitable for silane cross‑linkable A/B two‑component cable‑material?
A1: SDJ series two‑stage extruder is highly recommended. Separated mixing and low‑shear extrusion effectively avoid premature silane graft cross‑linking. Many of our global cable customers adopt independent two‑set production solution for A‑material and B‑catalyst masterbatch.
Q2: Can your equipment adapt to high‑fill low‑smoke zero‑halogen cable‑grade formulations?
A2: Yes. We can select TTS triple‑screw extruder or reinforced‑version SDJ two‑stage unit according to filler loading percentage, and optimize screw‑element layout to improve powder feeding and dispersion performance.
Q3: What overseas after‑sales service can you provide for cable‑material production line?
A3: We supply multi‑language operation manual, remote video guidance, 48‑hour priority technical response. On‑site commissioning and operator training can be arranged upon request. Spare‑parts can be shipped via international courier.
Q4: Do you provide turn‑key solution including automatic batching system for cable‑material plant?
A4: Yes. Our engineering team can complete whole‑plant layout drawing, host + auxiliary matching, process scheme design according to your raw‑material list, hourly output and workshop condition.
Conclusion
Cable‑grade compound production belongs to high‑threshold polymer‑compounding scenario. Equipment selection must fully consider material heat‑sensitivity, filler loading rate and target output. TSB/TSH twin‑screw, SDJ two‑stage and TTS triple‑screw extruder target different cable‑material processing bottlenecks respectively.
Nanjing Yuzun Machinery (NEOPLAS) focuses on turn‑key extrusion pelletizing solutions for global cable‑material, masterbatch and modified‑plastic manufacturers. If you are planning new production‑line investment or equipment upgrading for cable‑compound manufacturing, feel free to send us your material list, target output and site requirements. Our engineering team will give you free technical evaluation and quotation.
www.yuzunextruder.com
Nanjing Yuzun Machinery Technology Co., Ltd.
