A fixed amount is applied to the threads of the seal cap using a special nozzle, improving airtightness and work efficiency without the need for reapplication.

For parts such as seal caps, uniform application of sealant is important to ensure airtightness. However, conventional application processes have the following challenges:

• There were cases where the amount of liquid applied was inconsistent and there was a partial lack of liquid, making it impossible to ensure airtightness.
• On the other hand, if too much is applied, the liquid will pool on the outside of the part and the appearance will deteriorate, which often requires rework in later processes and increases the workload.

By introducing our vipro-PUMP series dispenser (large capacity type) and a cap nozzle designed specifically for seal caps, the following effects were achieved:

• Continuously dispenses sealant at a high accuracy of ±1%
  This eliminates variations in line width and the risk of wire breakage, achieving a clean seal line that follows the joining line of the parts.
• The use of a cap nozzle allows for uniform application along the threads
  By using a dedicated nozzle that matches the thread shape of the seal cap, the material is reliably filled into narrow spaces, preventing dripping and unevenness. As a result, both shortened takt time and consistent quality are achieved.
• Stabilized discharge volume eliminates the need for post-process adjustments
  Eliminates liquid pools and unevenness, significantly improving production efficiency and yield.
• Stable discharge even with high viscosity and high filler
  Application conditions can be optimized according to complex cap shapes and depths. Also suitable for parts with complex shapes.

vipro-PUMP series dispenser (large capacity type)

A positive displacement dispenser that is ideal for linear application of high viscosity, high performance materials, and is widely used in the aviation and transportation industries.

• The positive displacement system achieves a discharge accuracy of ±1%, demonstrating stability even when dispensing in a line onto a seal cap.
• Stable dispensing of high viscosity materials and filler-containing liquids (e.g., glass fiber and silica). Supports the durability and sealing performance of parts.
• Compatible with ultra-high viscosity liquids up to 2,000,000 mPa·s (cps). Smooth continuous application is possible even before the resin hardens.
• The structure is resistant to shear separation and material deterioration, ensuring a stable finish while maintaining the physical properties of the liquid.
• Highly reproducible dispensing results enable smooth work standardization and integration with automated lines, supporting long-term stable operation.

Cap nozzle

A dedicated nozzle that can accurately apply sealant along the thread shape of the seal cap, ensuring reliable filling and airtightness in narrow spaces.

• Can be applied by following the mating shape of the screw part
• Achieving both shorter takt time and consistent quality
• Reduces dripping and uneven coating, eliminating the need for rework in later processes
• Compatible with high viscosity sealants, ensuring a stable seal line