Standard Test Method for Seal Strength of Flexible Barrier Materials

During the tensile test, one or more strips of specified width are cut from the package at right angles to the sealed seam.

A calibrated tensile testing machine is used to measure the force required to open a seal. The entire seam cannot be inspected here. The test provides quantitative measurements that can then be evaluated.

Standard Test Methods for Internal Pressurization Failure Resistance of Unrestrained Packages

In a burst pressure test, the entire package seal is tested. To do this, the unopened package is inflated under increasing pressure until it can no longer withstand the pressure and bursts. Sealing seams can be identified at the weakest point of the package, thereby identifying areas of weak sealing.

Standard Test Method for Detecting Seal Leaks in Porous, Nonporous, or Flexible Barrier Materials by Dye Penetration

During the dye penetration test, the integrity of the sealed joints is primarily checked.

Standard Guide for Accelerated Aging of Sterile Barrier Systems and Medical Devices

Accelerated aging is usually performed at 55°C, corresponding to 8 times the aging rate. Accelerated aging can also be performed at other temperatures according to customer needs.

Standard Test Method for Determining Integrity of Seals for Flexible Packaging by Visual Inspection

​During the visual inspection, check the sealing seams of empty packages or the sealing seams of packaged products for wrinkles, unevenness, or channel formation. Subsequently, peelability can be checked.

Standard Test Method for Detecting Gross Leaks in Packaging by Internal Pressurization (Bubble Test)

​Apply a certain test pressure to the package underwater and observe the formation of bubbles rising from the package. Bubble testing not only detects defects in sealing seams but also in packaging films. The use of bubble testing is advantageous when testing packaging performance, for example in shipping verification. This means that not only damage to the sealed seams can be detected, but also damage to the membrane caused by stresses caused by transport simulations.

Microbial penetration test (dry/wet)

It is used to verify whether the pore sizes of different packaging materials are sufficient to block the penetration of bacteria and protect the internal products. It is expressed in terms of anti-penetration ability level and microbial penetration barrier rate.