What is an Extruder? A Guide to Extrusion Technology

In wire and cable manufacturing, the extruder production line acts as the vital "heart." It uses heat and mechanical force to coat conductive cores with plastic, forming insulation or sheathing that defines the final product's quality and safety. This article explores extrusion line technology and its applications, featuring innovations from Dongguan Dongxin (DOSING) Automation Technology Co., Ltd.

What is an Extruder? From Pellets to Perfect Coating

A complete extrusion line is a synchronized automated system involving multiple precise stages:

1. Precision Pay-off & Tension Control: The conductor wire is fed steadily into the system. Integrated tension control prevents shaking or stretching, ensuring a uniform coating foundation.

2. High-Temperature Plasticization & Extrusion: Plastic pellets are melted by screw shear force and external heating into a homogeneous fluid. DOSING uses thermally optimized screws and barrels to prevent material degradation.

3. Mould Shaping & Concentricity: Molten plastic passes through a precision cross-head die. Proper die design ensures perfect concentricity, guaranteeing electrical performance and material efficiency.

4. Instant Cooling & Diameter Control: The coated cable is immediately cooled in a water tank. DOSING offers online laser micrometers for real-time diameter monitoring and automatic adjustment.

5. Stable Traction & Winding: A servo-driven haul-off provides smooth pulling, while an automatic take-up system winds the cable. DOSING's Siemens PLC control enables uninterrupted production.

Key Extrusion Line Solutions

DOSING provides specialized production lines for different needs:

• PVC Sheathed Extruder Line (Φ70-Φ100)

  For: BV/BVR building wires.

  Advantages: Optimized PVC temperature control and cooling ensure a smooth, high-output line for mass production.

• Core Wire Insulation Line (Φ30-Φ60)

  For: UL-standard appliance wires and power cords.

  Advantages: High-precision control via Siemens PLC and servos guarantees uniform insulation thickness meeting international standards.

The DOSING Advantage: Efficiency through Innovation

DOSING specializes in cable equipment automation. Founder Mr. Lin Huazhong's nearly 30 years of R&D experience led to key breakthroughs.

Key Innovation: DOSING integrated a PLC control system into cantilever machines, breaking speed barriers and boosting efficiency over 40%—a shift to intelligent manufacturing.

Full Service: The team offers one-stop solutions from design to after-sales, ensuring rapid and reliable customer operations.

Conclusion: Partner for Competitive Advantage

A high-efficiency extruder line is crucial for quality and cost control in the competitive cable market.

Dongguan Dongxin (DOSING) Automation Technology Co., Ltd., with its technical expertise and proven innovations, is a trusted global partner. Choosing DOSING ensures reliable production and sustained performance.