Spinneret Nozzle Micro-Drilling

The surface finish of the spinneret capillary is the lifeline of spinning quality. Rough edges or burrs can cause polymer clogging, flow instability, or even fiber breakage. Utilizing the "Cold Ablation" nature of femtosecond lasers, we remove material without thermal melting or recast layers, achieving mirror-smooth walls and edges. With our advanced process control, we can even achieve precise corner rounding with radii < 4μm, ensuring exceptionally smooth melt flow.

We can process extremely small diameters (tens of microns) with Aspect Ratios up to 10:1, enabling the mass production of ultra-fine fibers.  While maintaining ultra-high speeds, we maintain hole diameter tolerance within ±1µm and achieve 99% circularity.  This exceptional consistency across the micro-hole array ensures that every extruded filament possesses uniform cross-sections and properties.

The combination of 5-axis linkage and high-speed scanning systems grants us shaping capabilities far beyond standard circular holes.  Crucially, we overcome the challenge of hole tapering inherent in traditional methods.  By precisely manipulating beam profiles and scanning paths, we can non-contact process complex 2D or 3D profiles with Zero Taper into hard materials like stainless steel.  This ensures identical entrance and exit dimensions, allowing for the effortless fabrication of Trilobal, Star-shaped, C-shaped, or Hollow structures, significantly expanding the functional applications of synthetic fibers.