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Stevanato: The superior mechanical resistance of Nexa® vials

This study aims to experimentally demonstrate the improved mechanical resistance performance of Stevanato’s Nexa® vials. By comparing the 2R ISO format vial in Nexa® and Fina® platforms, this study highlights how Nexa® vials provide superior mechanical resistance, which translates into several operational benefits.

Test methodology
Mechanical resistance was assessed using two quantitative techniques

Vertical Compression Test (VC): Measuring the maximum force a vial can withstand before failure when subjected to axial stress.

Sample before (left) and after (right) VC test

Burst Test (BT): performed applying internal pressure to the glass container to obtain its maximum value of internal pressure resistance.

Sample before (left) and after (right) the burst test

Both tests compared Nexa® and Fina® vials. From the results achieved (VC and BT), Nexa® vials showed consistent superior mechanical resistance.

Key results
2R ISO vials
Thanks to their improved cosmetic quality and mechanical resistance, Nexa® vials provide several advantages:

  1. Reduced Total Cost of Ownership (TCO): Fewer cosmetic rejections and in-line breakages reduce waste of both container and final product.
  2. Improved Efficiency: Nexa® vials result in fewer lines-stops, downtimes and labour required to fix the filling line after breakages.
  3. Higher Safety: The superior mechanical strength of Nexa® vials reduces the risk of harmful products being dispersed due to container breakage.

Conclusions
This study analysed the improved mechanical resistance of Nexa® vials by comparing them to Fina® vials through vertical compression (VC) and burst test (BT). According to the results achieved, Nexa® vials have superior mechanical resistance, even three times Fina® with regards to Vertical compression (VC).

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