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ASTM F1306 Penetration Test of Flexible Barrier Films and Laminates

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ASTM F1306 Slow Rate Penetration Resistance of Flexible Barrier Films and Laminates


ASTM F1306 describes a method with very similar objectives for measurement of flexible barrier films and laminates. It uses an indenter with a tip radius of 1.6 mm and a conical shaft with a 6° angle. The test is performed on a film strip, which is fastened over an opening with a 35 mm diameter.

Applying load using hard, sharp, or angular objects is important for packaging materials. Understanding puncture resistance is necessary if films are used as packaging material for food or parts with sharp edges.

The static puncture test to EN 14477 measures this behavior using a pointed tip with a diameter of 0.8 mm. This test is also known as the Parker Ball-Point Test.

In this test, a strip specimen is gripped in the lower specimen holder. It is punctured from above with an exchangeable probe to measure the maximum penetration force.


Useage: 

Penetration resistance is an important end-use performance of thin flexible materials where a sharp-edged product can destroy the integrity of a barrier wrap. This will permit package entry/exit of gases, odors, and unwanted contaminates, causing potential harm to the product and reducing shelf-life. Material response to penetration will vary with numerous factors, such as film thickness, elastic modulus, rate of penetration, temperature, shape and type of probe. Consequently, material responses from puncture to stretch may be observed and quantified using this method. Although numerous combinations of experimental factors can be devised and used to simulate specific end-use applications, the recommended conditions in this method should be followed for standard comparisons of materials.


Scope:

This test method permits flexible barrier films and laminates to be characterized for slow rate penetration resistance to a driven probe. The test is performed at room temperature, by applying a biaxial stress at a single test velocity on the material until perforation occurs. The force, energy, and elongation to perforation are determined.


ASTM F1306 is a specification regarding the slow rate penetration resistance properties of flexible barrier films and laminates. Thin, flexible specimens must be of uniform thickness at 0.0025 mm or 0.0001 in.

A universal testing machine with a recording device and penetration probe are needed to perform this test. Ultimately, the force, energy, and elongation to perforation of the material are observed. Before conducting ASTM F1306, one should read the whole ASTM specification.


Related standard:

EN 14477: Packaging - Flexible packaging material - Determination of puncture resistance - Test methods 


EN 14477 is an increasingly important testing standard due to the increasing popularity of lithium-ion batteries. Lithium-ion batteries include a separator material - the membrane between the battery’s anode and cathode - which has become increasingly thinner as manufacturers seek to improve conductivity and minimize the amount of space that it occupies. These separator films are commonly made from polymers and must be mechanically strong enough to withstand the winding operation during assembly of the battery. From a material evaluation standpoint, understanding the mechanical properties such as puncture resistance is important when determining which material is optimal. 

ASTM F1306 Penetration Test of Flexible Barrier Films and Laminates




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