GB/T 13022-1991 is a standard for test methods on the tensile performance of Plastic films and sheets. It is formulated with reference to the international standard ISO 1184-1983 "Determination of tensile performance of Plastic films". This standard applies to Plastic films and sheets with a thickness of less than 1 mm. It specifies the test equipment, the selection and preparation of specimens, and the test conditions including standard environment state adjustment and Test speed. The calculation and representation of test results shall comply with the requirements of the standard and include the content of a detailed test report. The standard aims to ensure that the tensile performance of materials is evaluated under uniform conditions, providing an accurate basis for product quality control and technical evaluation.