Test method for moisture resistance of bubble bag

Moisture resistance is one of the basic properties of bubble bags, and there are certain differences in the moisture resistance of different types of bubble bags. 1. Significance Most of the bubble bags are made of low-density polyethylene. There are many small bubbles on the surface, and each bubble contains a certain amount of gas. When impacted or squeezed by an external force, these gases will act as a buffer, so The bubble bag has the functions of shockproof, anti-wear, sound insulation, etc. It is often used for shock-resistant cushioning and protective packaging of electronics, precision instruments, ceramics, handicrafts, household appliances, bicycle shops, kitchens, furniture, hardware tools, glass products, etc. 2. Test basis At present, there are four main methods for testing the water vapor transmission rate of plastic materials, namely the cup method, the electrolytic sensor method, the infrared sensor method, and the humidity sensor method. In order to prevent the bubbles in the sample from being squeezed and destroyed, Try to keep the original appearance of the bubble bag. This article uses the principle of the cup method to test the water vapor transmission rate of the sample. The test is based on the GB 1037-1988 'Plastic Film and Sheet Water Vapor Permeability Test Method Cup Method'.　　3. Test sample 　　 This test uses a white transparent bubble bag as the test sample to test its moisture resistance.　　4, test equipment 　　The test equipment used is W3/030 water vapor transmission rate tester, which is independently developed and produced by Jinan Languang Electromechanical Technology Co., Ltd.　　 Label: pe waterproof bag