High-precision, uniform application of sealant ensures airtightness and durability of aircraft parts

Aircraft parts are used in harsh environments such as high altitudes, low pressure, and extreme temperature changes, so the airtightness, reliability, and durability of the parts are extremely important. To ensure these, highly accurate and uniform application of sealants is required.
However, conventional coating processes have the following challenges:

• Decrease in sealing performance due to uneven or biased application:
  If the sealant is not applied evenly, the sealing effect is compromised, reducing airtightness and risk negatively impacting the lifespan of the final product.
• Pooling or excess or insufficient liquid at the start and end points of application:
  If excess liquid remains at the start and end points, it can lead to a decrease in appearance quality and unnecessary weight increase, while if there is insufficient liquid, it can result in insufficient sealing performance.

The fixed-volume dispensing solution using the high-precision volumetric dispenser “vipro-PUMP” series has achieved the following benefits:

• Continuous application with high accuracy within ±1%
  The uniform and stable line application improves airtightness, significantly reducing problems caused by uneven sealing and contributing to extending the product lifespan.
• Minimizing liquid pooling and coating deviation
  Excessive or insufficient dispensing at the start and end of dispensing is suppressed, preventing adverse effects on appearance and weight. Dispensing can be reproduced exactly as designed.
• Optimizing material usage and reducing weight
  By applying only the exact amount needed, material waste is reduced, contributing to weight reduction and cost efficiency, both of which are important in the aircraft industry.

 

vipro-PUMP series dispenser (large capacity type)

A positive displacement dispenser ideal for applying a fixed amount of high-viscosity, high-performance sealant in the aviation and transportation fields.
Especially in aircraft parts, stable material conveyance and uniform line application are essential, as even slight coating irregularities or air bubbles directly affect airtightness and safety. The vipro-PUMP’s precise volume control and stable discharge performance enable process optimization aimed at zero sealing defects for complex shapes and curved surface joints.

• Positive displacement type achieves a discharge accuracy of ±1%
• High-viscosity materials and liquids containing fillers can also be applied with high precision
• Supports high viscosity liquids up to 2,000,000 mPa・s (cps)
• Less susceptible to shear forces, allowing for continuous, stable application
• Maintaining the physical properties of the material while achieving high-quality application ensures reproducibility