Keyword：Screw Glue Dispensing Valve
Time-pressure dispensing struggles with thick pastes and filled materials: viscosity variations change flow rate, and air in the system compresses, causing inconsistent deposits. A screw glue dispensing valve solves these problems with positive displacement technology. A precision screw (auger) inside the valve rotates to drive fluid out, and each rotation delivers a fixed volume determined by the screw geometry and speed. This mechanical metering is immune to viscosity changes and air bubbles, making the screw valve the standard for solder paste, thermal grease, adhesives and sealants.
How the Screw Valve Works
A screw glue dispensing valve consists of a motor, a screw chamber, an inlet for fluid supply and a dispensing nozzle. Fluid enters the chamber under pressure; as the screw rotates, it carries fluid toward the nozzle in the helical thread spaces. Rotation speed controls flow rate, and a servo motor allows precise acceleration, deceleration and positioning of the fluid column. The result is volumetric dispensing: dots and lines are defined by screw turns, not by air pressure, giving repeatability of ±1% or better even with abrasive or shear-sensitive materials.
Key Advantages Over Time-Pressure Dispensing
Screw glue dispensing valves serve demanding applications worldwide. In electronics, they dispense solder paste for stencil-free SMT, thermal interface materials for heat sinks, and underfill for chip packaging. In automotive, they apply thick sealants and adhesives for battery pack assembly and sensor encapsulation. In consumer products, they dispense greases and lubricants into mechanisms. Any application requiring repeatable volume of a viscous fluid — where consistency is a product requirement — benefits from the positive displacement precision of a screw valve.
Applications Across Industries
Screw glue dispensing valves serve demanding applications worldwide. In electronics, they dispense solder paste for stencil-free SMT, thermal interface materials for heat sinks, and underfill for chip packaging. In automotive, they apply thick sealants and adhesives for battery pack assembly and sensor encapsulation. In consumer products, they dispense greases and lubricants into mechanisms. Any application requiring repeatable volume of a viscous fluid — where consistency is a product requirement — benefits from the positive displacement precision of a screw valve.
Resource:
https://secondintelligent.com/product/high-viscosity-adhesive-single-liquid-screw-glue-dispensing-valve/
