Spray and immersion test method for the hottest pa

Methods of spray and immersion test of packaging materials

during the production and transportation of packaging materials, it is inevitable that goods will be soaked by water in the circulation process. Haida analyzed the methods of spray and immersion test of packaging materials. During the production and transportation of packages, it is inevitable that the goods will be soaked by water in the circulation process. Haida analyzed the methods of spray and immersion test of packages:

spray and immersion test are used to inspect the losses caused by goods soaked by water in the circulation process

1. Spray test

spray test is used to check or evaluate the defense ability of packaging against rain, etc., and the degree of protection of packaging against its contents

the principle of spray test is: place the package test sample after temperature and humidity treatment in the test environment, spray it according to the predetermined spray amount (or spray speed) and the predetermined time under the set temperature conditions, so as to test the wetted state of the package

the temperature and time of spraying should be selected according to the circulation environmental conditions, and the time is generally selected in 5min, 15min and 60min. The water spray volume is generally stable at (100 20) l/(㎡.H)

the test conditions and methods of spray test can seamlessly integrate the flexible production line with the platform system according to the national standard "basic tests of packaging and transportation packages Part 9: spray test methods" (GB 4857.) According to the provisions of

at present, the international standard "water drenching test of filled transport packages with completed packaging" (IS0 2875:2003) can be referred to or implemented

2. Water immersion test

water immersion test is used to check and evaluate the anti immersion ability of packages when immersed in water, as well as the degree of protection of packages to their contents

the principle of water immersion test is: immerse the test package sample treated with temperature and humidity into water at a predetermined time, and let the water penetrate or immerse the package. Then take the test sample from the water and drain it under the specified conditions

generally, the test sample should be the actual transportation packaging, but under certain conditions, the contents can not be mutually replaced but can only be mutually supplemented. They are the simulators of the packaged products, and the size and physical properties of the simulators should be as close as possible to the actual contents

the temperature and humidity conditions before soaking and during draining should be the same, and the soaking time and draining time should be selected according to the actual circulation environmental conditions. Generally, the soaking time can be selected from 5min, 15min, 30min, th, 2h and 4H. The drainage time can be selected from 4h, 8h, 16h, 24h, 48h, 72h, 1 week, 2 weeks and 3 weeks

the test conditions and methods of immersion test shall be in accordance with the national standard "methods of immersion test for packaging and transportation packages" (GB 4857.) According to the provisions of