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EN 14477 Puncture Resistance of Flexible Packaging Material
EN 14477 separator film testing
EN 14477 is a testing standard used to determine the puncture resistance of flexible packaging material. This standard provides a testing procedure for determining the maximum force and elongation for materials testing. EN 14477 has also been utilized to determine the puncture resistance of films such as those used in lithium-ion batteries, though it is not a direct mention in the standard as the standard scope is focused on multilayer flexible packaging.
EN 14477 and Lithium-Ion Battery Testing
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.
prismatic battery cell
Test Fixture
HST’s custom puncture fixture was designed per EN 14477 and includes two 0.8 mm diameter puncture probes. The fixture includes an essential rubber ring that goes between the specimen and fixturing body, which is necessary to prevent the specimen from moving around or slipping during testing. HST also offers a 1 mm diameter puncture probe, as an add on or replacement for the 0.8 mm diameter probs. Though the 1 mm diameter probe deviates from the standard, it can be used in various cases to evaluate the puncture resistance of thin film materials.
EN 14477 is a testing standard used to determine the puncture resistance of flexible packaging material. This standard provides a testing procedure for determining the maximum force and elongation for materials testing. EN 14477 has also been utilized to determine the puncture resistance of films such as those used in lithium-ion batteries, though it is not a direct mention in the standard as the standard scope is focused on multilayer flexible packaging.
EN 14477 and Lithium-Ion Battery Testing
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.
prismatic battery cell
Test Fixture
HST’s custom puncture fixture was designed per EN 14477 and includes two 0.8 mm diameter puncture probes. The fixture includes an essential rubber ring that goes between the specimen and fixturing body, which is necessary to prevent the specimen from moving around or slipping during testing. HST also offers a 1 mm diameter puncture probe, as an add on or replacement for the 0.8 mm diameter probs. Though the 1 mm diameter probe deviates from the standard, it can be used in various cases to evaluate the puncture resistance of thin film materials.
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