Standard Practice for Separation of Plies for Bond Strength of Laminated Flexible Materials
Standard Practice for Separation of Plies for Bond Strength of Laminated Flexible Materials
SIGNIFICANCE AND USE 5.1 Laminates are made by bonding together two or more layers of material or materials, where each layer might be a single or multi-layer material. When the bonding agent is reactive and requires time to reach full performance, the bond strength is typically measured as a green (un-cured) bond and a cured bond. For processes that intentionally create a nonlaminated edge, that edge is generally used to initiate the bond strength measurement. The techniques described in this practice can be used to initiate separation of plies when a non-laminated edge is not present. SCOPE 1.1 This practice describes techniques for separating plies of laminates made from flexible materials such as cellulose, paper, plastic film, and foil to enable the measurement of the bond strength or ply adhesion of the laminate. This includes laminates made by various processes: adhesive laminates, extrusion coatings, extrusion laminates, and coextrusions. 1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are provided for information purposes only. 1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. Specific precautionary statements are given in 6.1.1. 1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
ASTM F904-22: Standard Practice for Separation of Plies for Bond Strength of Laminated Flexible Materials establishes techniques to separate the plies of flexible laminate structures-such as those constructed from cellulose, paper, plastic film, or foil-in order to measure their bond strength or ply adhesion. This standard is vital in assessing the durability and functional integrity of multi-layer laminates produced via adhesive, extrusion, or coextrusion processes. The methods outlined ensure repeatable and reliable comparison of bond strength within similar laminate types, thus supporting consistent quality control and product performance evaluation in flexible packaging and related industries.
ASTM F904-22 supports a range of practical applications in ensuring the reliable performance of flexible barrier materials and multi-ply laminates. Typical uses include:
Другие стандарты ASTM
For comprehensive material characterization and validation, ASTM F904-22 is commonly used alongside other ASTM standards, including:
Adhering to ASTM F904-22 enables manufacturers and product developers to:
By following this standard, organizations ensure that flexible laminate materials meet the demands of their intended applications, providing durability, safety, and performance in diverse environmental and end-use conditions.
Keywords: ASTM F904-22, ply separation, bond strength, flexible laminates, adhesion testing, barrier materials, packaging quality, laminate durability, tensile testing, international standards.