What is the core function of a sheathing machine?

【Summary】 By precisely controlling the wrapping angle, tension, and thickness, functional materials—such as metal wires, elastic fibers, and conductive yarns—are integrated with base substrates to achieve enhanced strength (e.g., carbon fiber-coated reinforced plastics), tailored elasticity (e.g., spandex-coated yarns for textiles), or specialized functionalities (e.g., conductive-coated filaments for smart wearable devices).

1. Material Composites and Performance Optimization

By precisely controlling the wrapping angle, tension, and thickness, functional materials—such as metal wires, elastic fibers, and conductive yarns—are integrated with substrates to achieve enhanced strength (e.g., carbon fiber-coated reinforced plastics), tailored elasticity (e.g., spandex-coated yarns for textiles), or specialized functionalities (e.g., conductive-coated wires for smart wearable devices). For instance, in lithium battery tab coating, aluminum wires are combined with copper wires using a coating machine, effectively overcoming the challenges associated with welding dissimilar metals.

2. Precision Molding and Process Control

By leveraging technologies such as servo drives and electronic cams, the system achieves high-speed (up to 1000 meters per minute) and high-precision coating—specifically, a jacketing pitch error of ±0.1 mm—while accommodating diverse cable diameters ranging from fine wires (as thin as 0.05 mm) to thick cables (over 10 mm). For instance, when applying PE jackets to communication optical cables, strict control over thickness uniformity is essential to maintain stable signal transmission.

3. Multi-functional Integration and Customized Production

Supports single-filament, multi-filament, and multi-layer coating—plus even on-line dyeing and printing—to meet the customized needs of various industries.

• In the textile field: Spandex-covered yarn imparts elasticity to fabrics (such as sportswear);

• Electronics field: Mica tape coating enables wire insulation (with temperature resistance exceeding 1000°C);

• Medical field: Antibacterial fiber-coated catheters reduce the risk of infection.

Key Technical Indicators

• Coating efficiency: Maximum line speed can reach up to 2,000 meters per minute (in the synthetic fiber industry);

• Material compatibility: Supports combinations of multiple substrates, including metals, plastics, and fibers;

• Automation level: Equipped with CCD online inspection and automatic wire breakage stop function, resulting in a defect rate of less than 0.1%.