Standar ISO 4593

Test Materials: ISO 4593 specifies that the test material must be a plastic film or sheeting. The sample should be flat and free from defects, such as wrinkles or surface irregularities, to ensure accurate thickness measurements.
Test Process: The test involves placing the plastic film or sheeting sample on a flat surface, where a mechanical scanning instrument measures the thickness at multiple points across the sample. The device typically uses a micrometer or a similar instrument that applies a consistent force to measure the thickness.
Test Result Interpretation: The results are interpreted based on the average thickness measured across multiple points of the sample. The thickness values are then compared to the specifications to determine whether the sample meets the required standards. Variations in thickness should be noted, as they may indicate quality control issues in the manufacturing process.