Seal Strength Test

What is the goal of a seal strength test?

The aim of a seal strength test is to evaluate the strength of a seal seam of sterile barriers or primary packaging of medical devices.

In addition, seal strength tests help manufacturers to improve the quality of their products by identifying possible defects or weak points in the sealing processes. This helps to avoid costly recalls or production errors and increase customer satisfaction. Overall, sealing strenght tests serve to ensure product integrity, safety and quality control.

What happens during a seal strength test?

The peel force and the peel behavior are examined. The test process generally comprises the following steps:

Sample preparationA specified number of test strips of a defined width are cut from the sealed seams.
Measurement of Sealing ForceThe actual force required to open the seal seam is measured, and the peel behavior is evaluated.
Data AnalysisThe measured values are analyzed and evaluated to ensure that the requirements are met.
ReportingThe results will be documented and summarized in a test report, which is important for quality control and compliance with regulatory specifications.
Declaration of ConformityThe report contains a statement of conformity regarding whether the seal strength meets the requirements.

We conduct the tests for measuring sealing force and peel strength according to the standard in our climate laboratory at 23°C and 50 % RH.

In which areas is a seal strength test used?

Seals are used in various areas, such as in the packaging industry, especially for medical device packaging, bottle caps, or in the food, pharmaceutical, and chemical industries.

Testing the seal's strength makes it possible to ensure that the seal provides the desired protection and the required integrity.

Standards: ASTM F88/F88 M, ASTM E171/E171 M, DIN EN 868-5, DIN EN ISO 11607-1, DIN EN ISO 11607-2