Testing acc. to ISO 527-3: Plastics - Determination of tensile properties - Part 3: Test conditions for films and sheets
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Our testing laboratory performs testing according to DIN EN ISO 527-3 as an accredited test method for determining the tensile properties of plastic films and sheets less than 1 mm thick. The tensile test characterizes the behaviour of thin plastic materials under uniaxial tensile loading. Depending on the material and test objective, tensile stress and strain properties up to break can be determined.
The method is particularly suitable for thin films, plastic sheeting and flexible sheets. It allows different polymer materials, material constructions, formulations and manufacturing conditions to be compared. The test is therefore an important method for the mechanical characterization of plastics, elastomers and films and film materials used in Automotive + Mobility.
Testing according to DIN EN ISO 527-3
Defined specimens are prepared from the film or sheet. A strip-shaped specimen is preferred. Additional specimen geometries are specified for particular materials and applications, for example for films with very high elongation at break or for relatively rigid sheets.
The specimens are clamped in a tensile testing machine and subjected to controlled longitudinal extension. Force and deformation are recorded during the test. For films with direction-dependent properties, specimens are tested parallel and perpendicular to the orientation direction to determine differences between the material directions.
Applications of the test
Testing according to DIN EN ISO 527-3 is suitable for determining the mechanical properties of thin thermoplastic films and sheets. Typical materials include technical films, plastic sheeting and films used for coverings, laminates and other flexible polymer applications.
The determined tensile and elongation properties provide information on the strength, deformability and directional behaviour of the material. Different film types, formulations and manufacturing processes can therefore be compared. FILK offers additional mechanical methods within its tensile testing portfolio.
Related tests
For moulding and extrusion plastics and thicker plastic sheets, FILK performs tensile testing according to DIN EN ISO 527-2. The resistance of plastic films to continued tearing can be assessed by the tear test according to DIN 53363. Dimensional changes of plastic films can be determined according to DIN 53377. For rubber- or plastics-coated fabrics, tensile strength and elongation at break are determined according to DIN EN ISO 1421.
