Packaging Testing Methods

Table Top Vacuum Tank with Vacuum Package Test AttachmentWith FLEXPAK™ package leak detection, there are multiple packaging testing methods for your applications to ensure the highest quality in seals, seams, closures and substrates are being met. The seal integrity test methods may vary depending on the contents of the package, but the FLEXPAK™ leak detection system provides all of these testing options with one machine.

FLEXPAK™ vacuum style leak detector can be used to facilitate testing to standards such as ASTM D3078, ASTM D6653, ASTM D2096, ASTM D4169, ASTM D4991, and  ASTM D5094.  Any package integrity test that requires a vacuum chamber, underwater bubble test, or package pressure test can be done with the FLEXPAK™ seal integrity, vacuum tank, bubble leak detector (with the applicable options).

Bubble Emission Leak Test Procedure

The Bubble Emission leak test procedure (per ASTM Standard Test Method D3078-02)  is ideal for packages whose contents have headspace or some amount of air or gas within the package. After placing the package in the FLEXPAK, closing the lid, and submerging it under the water, a vacuum is drawn on the package; if air bubbles appear, then the package is compromised or faulty. Visual knowledge of where the bubble is propagated tells you exactly where the package is faulty and allows you to correct the problem. Leak detectors that do not give a visual location of the problem don’t allow you to fix the problem!

This test may also be used for any package to determine a burst point on the seal. The outcome can then be used as a company standard for regular Bubble Emission Tests when in production and can be tracked during production in order to see a trend in diminishing seal integrity in order that adjustments can be made to correct a problem BEFORE it occurs!

Dry Chamber Flexible Package Testing

The Dry Chamber method of package leak detection is best suited for packages whose contents are liquid and have little headspace or air within the package. The package is placed in a dry FLEXPAK tank (or chamber) on a paper towel or absorbent-type material. The vacuum is drawn to operator specifications and if after the test finishes, the towel or material is wet, the package seal is faulty.

Altitude Simulation Seal Integrity Test Methods

Altitude simulation is important for all goods travelling with varying altitude levels, most commonly air travel or over ground crossing mountain ranges. Upon takeoff and landing, the product will undergo extremes in altitude level. The Altitude Simulation method (per ASTM Standard Test Method D6653) can be performed in either a dry or wet tank (or chamber) depending upon package contents through referencing a Vacuum versus Altitude simulation chart.

Seal Integrity Test Methods for Vacuum Packages

This method is used for packages that are vacuumed sealed (or vacuum packed). For the test, a small attachment is used and the regular Bubble Emission Test procedures are then performed.

FLEXPAK Semi or Fully Automatic Control Systems

FPSA and FPFA are FLEXPAK Semi-Automatic and FLEXPAK Fully Automatic control options that can be purchased to improve repeatability and take data acquisition for the various tests. Accuracy is improved by a reduction in possible operator error over the standard manually operated system. Either one of these control options may be added to your existing manual FlexPak or other brands of similar leak detectors.

For more information about the FLEXPAK flexible packaging seal tester, or questions about the system, contact us and request a quote today.