Single-Metal Dispensing Needles: Precision Tools for Industrial Precision Dispensing

In precision manufacturing across electronics, medical devices, automotive, and other industries, dispensing operations demand near-obsessive precision. From applying minute amounts of adhesive during chip packaging to precisely bonding medical device components, a reliable dispensing needle is indispensable. Single-metal dispensing needles, leveraging their material advantages and structural characteristics, have become a core tool for meeting high-demand dispensing requirements—truly the “precision tool” of industrial production.

What is a Single-Metal Dispensing Nozzle?

As the name suggests, a single-metal dispensing nozzle is a dispensing tool accessory made entirely from a single metal material. Primarily used to connect to dispensing machines or valves, it delivers fluids like adhesives, inks, and coatings with precision to designated locations. Unlike composite materials with joined structures, these needles feature a seamless metal composition from tip to handle. This eliminates potential issues like adhesive residue or joint leakage associated with material junctions, making them particularly suitable for applications demanding high fluid control precision.

Core Material: Why the Preference for Metal?

The material selection for single-metal dispensing needles directly determines their performance limits. Currently, stainless steel is the most mainstream material in the industry, while brass is used in some specialized scenarios. Each has distinct advantages:

Stainless Steel: The most common choice. Stainless steel offers exceptional corrosion resistance, compatible with adhesives of diverse chemical properties like epoxy, instant glue, and silicone. It resists rusting or deformation from adhesive erosion. Its high hardness and wear resistance ensure the inner walls remain smooth even after prolonged contact with high-viscosity adhesives, maintaining consistent flow and preventing uneven dispensing caused by rough surfaces. Furthermore, stainless steel exhibits good high-temperature resistance, ensuring stable performance in high-temperature dispensing applications (e.g., hot melt adhesive operations).

Brass Material: Brass offers high machining precision, enabling the fabrication of extremely fine needle tips ideal for ultra-micro dispensing. Its smooth surface minimizes adhesive residue, simplifying cleaning. However, brass has limited corrosion resistance and is best suited for neutral, non-aggressive adhesives. It is commonly used in medical devices, cosmetic filling, and other applications requiring high cleanliness with mild adhesive properties.