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ISO 7765-1
ISO 7765-1
The impact resistance of plastic film and thin sheets is determined by the free-falling dart method by the internationally recognized test standard ISO 7765-1. This test measures the resistance of a plastic film to sudden impact by dropping a hemispherical dart of the specified mass from a specified height onto the test film. The mass of the dart that causes failure is used to characterize the film’s impact strength. This technique is widely used in the packaging industry for packaging in bags, pouches, wraps, liners, and protective packaging. Presto Laboratories provides cutting-edge testing solutions that help manufacturers accurately check for film durability and impact performance as required in ISO 7765-1 standards.
Significance
When plastic film applications involve rough handling, stacking, transport, or by chance dropping during use, impact resistance is an important characteristic for the plastic film. The product could break or be damaged if the film has a low impact resistance. ISO 7765-1 is designed to assist manufacturers in establishing the toughness of a film and to compare the performance of the various grades of film. The test results are used for quality control, development and selection of package systems, and research. Consistent dart impact testing also helps industries maintain product quality and reduce packaging failures throughout the supply chain. Scope The test method for the impact resistance of plastic film and sheet according to ISO 7765-1 was based on the mass of a falling dart needed to break the specimen under a condition of standardization. The standard can be applicable to a wide variety of plastic films for packaging and industrial applications. It provides a uniform procedure for obtaining repeatable and comparable impact resistance data under controlled laboratory conditions.