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Peel Strength Test Method of Aluminum Plastic Composite Package for Meat Products

May 10,2020

Source: Link Testing Instruments Co., Ltd

Composite film is widely used as food packaging material due to its superior barrier property, impact resistance and other mechanical properties better than mono film. This article discusses the composite packaging film for meat products.

The compound fastness between the mono layers of the composite packaging film is measured by the peel strength, which is one main property used to evaluate the quality of composite packaging film. 

In practical application, if the peel strength of the composite film is too low, delamination may occur to the film after the content is packed inside the package. As a result, the barrier property as well as mechanical properties e.g. impact resistance of the packaging material may be compromised. 

This article provides a simplified test method for the peel strength of the aluminum plastic composite package for meat products. The test specimens are provided by one meat product manufacturer. The testing instrument we used for the tests is Link Testing’s LTS-05 Auto Tensile Tester.

Figure 1. Aluminum Plastic Composite Packaging Bags

Figure 2. LTS-05 Auto Tensile Tester

The tests shall be performed according to the following procedures.

  • Cut specimens from the sample material along machine direction and transverse direction. 5 pieces of specimens for each direction. The size of the specimen should be 200mm by 15mm.
  • Peel the specimen from one end by 50mm along the machine direction as is shown in the figure below.

Figure 3. Peel Specimen before Test

(3) Clamp the two ends of the peeled part of the specimen with the upper and lower sample grips. Make sure the longitudinal axis of the specimen coincides with the line of centers of the upper and lower sample grips.

(4) Set test speed, specimen width and other test parameters.

(5) Click Test to start the test. The system will record the peeling forces in the testing process, calculate and display the final test results automatically.

For more details about LTS-05 Auto Tensile Tester, please visit

About Link Testing Instruments Co., Ltd:

Link Testing Instruments Co., Ltd is one leading supplier of packaging testing instruments, which is headquartered in Jinan, China .

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