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Seal Strength Testing

per ASTM F88, F1104, F2054, F2824, D3078

Vinatoru Enerprises, Inc. has a full service laboratory that performs most industry standard tests as well as customer-defined testing procedures in a strictly controlled environment. We provide computerized testing services including peel, creep and burst, vacuum leak and dye, head space leak and pressure differential.

  • Accurate testing.
  • Increased Repeatability and Reproducibility.
  • For consistent and reliable testing.
  • High accuracy.
  • Automated data collection, graphs and reports

Seal Strength per ASTM F88 and F2824

Seal Strength testing, also known as Peel Testing, measures the strength of seals within flexible barrier materials. This measurement can then be used to determine consistency within the seal, as well as evaluation of the opening force of the package system. Seal strength is a quantitative measure for use in process validation, process control and capability. Seal strength is not only relevant to opening force and package integrity, but to measuring the packaging processes’ ability to produce consistent seals.

Seal Strength - complete peel - per ASTM F2824

The F88 method is looking at a 1-in. cross section of an entire seal on a package. An alternative method covers the whole package and measures the strength and continuity of the entire length of the seal. The test method covers the measurement of the strength of seals between a rigid material and a flexible barrier material. This test method measures the force required to separate the entire lid of material containing the seal. It also identifies the mode of specimen failure. This method is an alternative to ASTM F88, "Standard Test Method for Seal Strength of Flexible Barrier Materials."

Burst and Creep per ASTM F1140 and F2054

The burst test is used to determine the packages strength and precession. The burst test is performed by pressurizing the package until it bursts. The results for the burst test include the burst pressure data and a description of where the seal failure occurred. This test method covers the burst test as defined in ASTM F1140.The creep test determines the packages ability to hold pressure for an extended period. The creep test is performed by setting the pressure at about 80% of the minimum burst pressure of a previous burst test. The time to seal failure or a pre-set time is measured.

Vacuum Dye per ASTM D3078

Determination of package integrity. The package is submerged in a transparent container filled with a mixture of water and dye. Vacuum is created inside the container and maintained for a specific length of time. When the vacuum is released, any punctured packages will draw in dye revealing the imperfect seal.

Pouch Integrity Testing

For many small and odd shaped packages, the seal strength cannot be measured by standard means. Applying a constant force and maintaining it for a predetermined time period will stress the seal over the normal distribution limits. Upper force limit for each individual package will be determined based on experimental testing. By placing the package within restraining plates during pressurization, the dimensional stability of the package is maintained in a manner that results in stresses applied more uniformly along the perimeter of the package, where seals are normally placed. This allows the test to have a higher probability of detecting the weakest area of the seal and provides a measurement of the pressure required to "burst" open the package. This test only applies to flexible packages with seals placed around the perimeter of a flexible package (often referred to as a pouch)




 

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