Real anti-static document bag
Many customers will ask if they call, is yours a real anti-static document bag? Isn't it coated? The one we bought before was useless for a while.
Let me uncover this secret secret for everyone.
First of all, why many anti-static document bags bought by customers, when they are tested with a surface resistance tester, can detect about 10E9-10E10 powers, and then after a period of use, the next time they are tested, they can’t be tested again. Is it effective? Is it a weather problem? ! But the general factory is a constant temperature workshop, which is impossible. Obviously, this so-called anti-static bag is only temporary anti-static. Why is it called temporary, that is, it only has a short anti-static life, which may be about 3-5 days, or 14-15 days. Where does this temporary anti-static life come from? ! Something is coated on the surface, yes, yes, that's it, the surface is coated with an anti-static liquid with temporary anti-static effect, and it is also a cheap domestic anti-static liquid, which will definitely produce some The friction of human hands or desk tops slowly wears away the electrostatic layer on its surface. With daily wear, the more worn out, the shorter the anti-static life expectancy. As time passes, it becomes ineffective. The characteristics of this kind of anti-static document bag are generally: 1. There is no anti-static LOGO printed on the surface, or it is labeled, 2. The left side of the punched hole is printed with a white border. 3. After using for a period of time, the test has no effect, or the effect is very poor, close to insulation.
How can I buy a real anti-static document bag?
Simple method, use two instruments to detect. 1. Surface resistance tester, 2. Friction voltage tester
The real anti-static document bag is made by adding anti-static material to blow the film during the production process, and then shearing and pressing it. The surface will definitely be printed with an anti-static LOGO, which is the logo of that hand. The color on the side of the punch hole should be yellow, the most important step is to use the instrument to detect.
The surface resistance tester detects its surface electrostatic effect, which is generally within the power of 10E7-10E10. This instrument has good precision. It is generally not recommended to use domestically produced instruments that cost more than one hundred and tens of dollars, but only up to 10E7 times. Within the square, it is very good to import if there are conditions. (Instruments with better precision: American ACL380, ACL800, etc.)
Friction voltage tester, no matter what is not anti-static, as long as the product is tested with this instrument, the product voltage exceeds 100V after friction, it is not a qualified anti-static product, of course it depends on the industry of your product The testing standard, or the less demanding ones, will be required to be within 200V. (Recommended instruments: SIMCO FMX-003, American ACL-350, etc.)
Improve the inspection every period of time. If it is a real anti-static bag, the more it uses the anti-static performance, the more stable it will be.
Our company has sold 11-hole anti-static document bags for many years, and we have encountered countless cases of these customers. We can definitely guarantee that we only make high-quality anti-static document bags to provide our customers with real anti-static document bags. Electrostatic document bag, the specifications are A3, A4. The supply is sufficient, and there is generally no out-of-stock situation.