ASTM F 88 covers the measurement of the strength of seals in flexible barrier materials. The test measures the force needed to separate a test strip of the. Seal Strength ASTM F Ultimate Seal Strength of Thermoplastics ASTM F Scope: Seal strength is the tensile strength of the seal at ambient temperature. ISO , Annex B. – Seal Strength. • ASTM F88 – Standard test method for seal strength of flexible barrier materials. • ASTM F – Standard test method.
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It is the maximum force required to separate the two layers of a seal under particular conditions. Enabling you to identify and mitigate the intrinsic risk in your operations, supply chains and business processes. A portion of the force measured to open the seal may as a result of bending forces. Certification Formally confirming that your products and services meet all trusted external and internal standards.
Link to Active This link will always route to the current Active version of the standard. Standards can be obtained from appropriate standard authorities.
Because the effect of each of these on test results is varied, consistent use of one technique Technique A, Technique B, or Technique C throughout a test series is recommended. At a certain temperatures a seal force level is reached which wstm related to the maximum tensile force of the film.
ASTM F88 / F88M – 09 Standard Test Method for Seal Strength of Flexible Barrier Materials
Combining values from the two systems may result in non-conformance with the standard. Because each technique will produce different results, it is important that the same technique is used for all tests in the same batch and noted in the report.
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Send us a request Need help or have a question? Asfm Consulting Sourcing Training. Supported by Hand 90deg; C: Each tail c88 the sealed specimen is secured in the opposing grips of a universal test bench.
ASTM F88 Package Seal Strength Testing
Sales Support Calibration Calculators. Formally confirming that your products and services meet all trusted external and internal standards. A number of fixtures and techniques have been devised to hold samples at various angles to the pull direction to control this bending force.
When the sample is loaded in the grips, make sure slack remains in the specimen. Historical Version s – view previous versions of standard. It is the c88 of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
A curve can be plotted showing the effect of the sealing conditions mainly temperature on the seal force.
Seal Strength ASTM F88
Properties of interest are the maximum seal force and in some cases the average force to open the seal. Pull the sample until separation occurs. The maximum tensile force required to separate the two ends of the seal is recorded. Refer to the ASTM specification for conforming test rates. Seal strength is the tensile strength of the seal at ambient temperature.
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Assurance Testing Inspection Certification. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. A series of seals at different sealing temperatures are made, using a machine employing hot-bar jaws. Unsupported— Each tail of the specimen is secured in opposing grips and the seal remains unsupported while the test is being conducted.
It also identifies the mode of specimen failure. Adjust the testing machine to a constant rate of jaw separation. Send us a request Wilton UK: 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 at some minimum level is a necessary package requirement, and at times it is desirable to limit the strength of the seal to facilitate opening. Use a sample cutter to cut the test specimens to size.
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