Test Method for Flex Resistance of Food Packaging
Test Method for Flex Resistance of Food Packaging Test Methods According to ASTM F392/F392M-M (2015) D method. After the film and bag are left to stand for 24 hours in a standard environment, a rectangular sample of 200mm×280mm is cut from the film or bag. Fix the width direction of the sample on the fixture, and start to rotate and knead at a constant speed. The kneading conditions are as follows: Kneading frequency: 45 times/min; Kneading angle: 440°; Linear movement stroke: 155mm; Kneading times: 20 times. After the kneading is completed, spread the sample horizontally. The oxygen transmission rate shall be carried out according to the provisions of GB/T 1038 …