Stable precision adhesion in the syringe needle assembly process

For medical injection needles, reliable adhesion between the needle and hub is extremely important to prevent separation and breakage during transportation and use. However, existing application equipment had the following issues:

• It is difficult to apply a small amount of adhesive stably.
  It was difficult to apply a very small amount of adhesive accurately, resulting in variations in the application position and amount.
• Uniformity of adhesion cannot be ensured, resulting in product variations
  Dripping and unstable dispensing resulted in unreliable adhesive quality and inconsistent performance between products.
• Excessive application can lead to poor curing and adhesive misalignment
  Inaccurate application of the liquid affects the efficiency of UV light irradiation, which has a negative impact on adhesive strength and dimensional accuracy.

The introduction of the ultra-fine dispensing needle valve “SV59MD” has resulted in the following improvements:

• Supports precise dispensing down to 1 nanoliter
  By steadily dispensing minute amounts of liquid in spots, it is now possible to reliably apply the minimum amount of adhesive required.
• Drip-free shutoff improves dispensing accuracy
  The seal structure ensures excellent fluid separation, eliminating uneven application and improving process reproducibility.
• Significantly improved joint reliability and product safety
  Achieving uniform, high-precision adhesion ensures the structural strength and quality stability of the injection needle, improving the reliability of the entire product.