Changes of several antistatic plastic bags affected by humidity
A customer asked me such a question about antistatic plastic bags. Is the antistatic bag affected by humidity? Are there any relevant standards?
After the customer asked such a question, I also thought about it carefully. Humidity has the biggest impact on antistatic plastic bags, and has little effect on conductive plastic bags and shielding bags. After actual testing, the test results at 20% humidity are better than 60. Test results at% humidity are an order of magnitude higher. That is: the antistatic plastic bag has a point-to-point resistance of 109Ω at 20% and a point-to-point resistance of 108Ω at 60%.
But what are the relevant standards? What I can think of is the national military standard GJB3007A-2009. The standard gives specific parameters of anti-static, but it does not explicitly give the effect of humidity. It just proposes that the EPA humidity in the anti-static work area is 45% -75%. Answers can satisfy customers.