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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Assurance Testing Inspection Certification.
Seal strength is the tensile strength of the seal at ambient temperature. Historical Version s – view previous versions of standard.
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. Pull the sample until separation occurs.
Sales Support Calibration Calculators. Auditing Consulting Sourcing Training. Refer to the ASTM specification for conforming test rates. A series of seals at different sealing temperatures are made, using a machine employing hot-bar jaws. Validating the specifications, value and safety of your raw materials, products and assets.
Assurance Enabling you to identify and mitigate the intrinsic risk in your operations, supply chains and business processes. This curve is called the seal curve. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Asgm of interest are the maximum seal force and in some cases the average force to open the seal.
Seal strength is a necessary package requirement and oftentimes it is desirable to limit the strength to facilitate opening the package. Standards can be obtained from appropriate standard authorities. It also identifies the mode of specimen failure. Adjust the testing machine to a constant rate of jaw separation. A portion of the force measured to open the seal may as a result of bending forces. Send us a request Need help or have a question?
When the sample is loaded in the grips, make sure slack remains in the specimen. The maximum tensile force required to separate the two ends of the seal is recorded.
ASTM F88 / F88M – 15 Standard Test Method for Seal Strength of Flexible Barrier Materials
Supported deg have been devised to hold the samples at various angles to help control the bending forces. Unsupported— Each tail of the specimen is secured in opposing grips and the seal remains unsupported while the test is being conducted. Combining values from the two systems may result sstm non-conformance with the standard. Maximum Force per Unit Width Identify the mode of specimen failure If significant peeling within the seal area occurs, calculate Average Seal Strength. Thus, three techniques A: 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.
ASTM F88 – 07 Standard Test Method for Seal Strength of Flexible Barrier Materials
Report the algorithm used to calculate the average If failure 8f8 by peeling only, calculate energy to separation. A rectangular specimen is used; the specimen width may be either 25 mm, 15 mm or 1. Through our network of over 43, people in 1, laboratories and offices in countries, Intertek provides quality and safety solutions to a wide range of industries around the world. Supported by Hand 90deg; C: ASTM F88 allows for three different sample widths.
It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. Work Item s – proposed revisions of this standard. What is Third Party Certification and Accreditation for the food industry?
ASTM F88 Package Seal Strength Testing
Send us a request Wilton UK: Certification Formally confirming that your products and services meet all trusted v88 and internal standards. 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.
Each tail of the sealed specimen is secured in the opposing grips of a universal test bench.