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Product Introduction
The knurling tool's role in anilox roller manufacturing is a traditional mechanical engraving method, which directly presses a pattern onto the surface of a copper layer to form ink cells.
Specific Application Methods:
Knurling tools are primarily used for mechanical engraving of anilox rollers:
*Working Principle: The knurling tool presses into the surface of a soft copper layer, transferring the tool's pattern to the roller surface, thereby forming a uniform array of ink cells. The copper material typically uses pure copper or copper with hardening additives.
*Application Scenarios: This method is suitable for situations requiring uniform cell size, such as applying uniform coatings of adhesives or patterns on packaging materials (foil, film). There are also specialized high-precision anilox roller mechanical embossing machines that use a "knurling blade" mounted on a tool holder for pattern pressing
Pattern coarseness is determined by Lines Per Inch (LPI):
Fine (33 LPI): Smooth feel, precision instruments
Medium (21 LPI): Balanced grip and comfort, general purpose
Coarse (14 LPI): Aggressive grip, heavy-duty tools
How to Choose Form Knurling:
*Working with soft, ductile materials (aluminum, mild steel)
Maximum surface finish quality is required
Material cost is a concern (no material removal)
*Workpiece is thin-walled or small diameter
Material is hard or brittle (stainless steel, cast iron)
Minimal diameter change is critical
Working with plastics or non-metals
High-line count anilox roller with 60° hexagonal cells
When a higher anilox roller line count (e.g., above 800 LPI) is required to achieve finer and more uniform ink layer transfer, The 60° hexagonal mesh is widely recognized as the optimal choice.
"Hexagonal" here primarily describes the shape of the mesh openings carved out by laser. Compared to the quadrangular (pyramidal) or other shapes produced by mechanical rolling, the hexagonal design (honeycomb-like) offers significant advantages:
advantage dimension | characteristics of 60° hexagonal mesh | benefit |
structural stability | The mesh walls (the partitions between mesh pockets) are narrower, more uniform, and possess high structural strength | It is more wear-resistant and scratch-resistant, maintaining the integrity of the mesh holes even under high linear speeds, thereby extending the service life of the roller |
ink transfer performance | U-shaped or hemispherical cross-section, with a large opening degree, and a flat or smooth bottom | With a larger ink storage capacity, the ink release and transfer are more thorough and smooth, enabling the formation of a more uniform ink film |
The flexibility of laser engraving allows for almost arbitrary setting of dot shapes. The 60° hexagonal shape, with its high utilization rate per unit area and excellent ink transfer performance, has become the preferred choice for high-precision flexographic printing.
Product detail drawing
