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The role and requirements of antistatic packaging bags

Antistatic packaging bags have become a growing packaging bag, and it is an important subject of increasingly deepening research on packaging bags. People pay attention to it mainly from two aspects.On the one hand, polymer materials have become the most important packaging bag materials, and most of the polymer materials are materials with excellent electrical insulation and high surface resistivity. Most of the polymer compounds are water-based materials, which are not easy to absorb moisture from the environment. Surface resistance, high polymer materials can generate static electricity under the conditions of contact, breakage, peeling, friction, piezoelectricity, and induction lamps, accumulating a large amount of electric charge, causing electrostatic hazards, which may hinder packaging and dust collection in light, and cause fire in serious cases.On the other hand, various electronic products are becoming more and more sophisticated, and microelectronic components have penetrated into industry, military, and daily life, and are ubiquitous. The electrostatic sensitivity of microelectronic products increases with the miniaturization and integration of products. Various electronic devices are sensitive to electrostatic discharge (ESD) sensitivity is shown in the table:Various electronic device pairsESDsensitivityDevice Type ESDSensitivity range ,V VMOS 30-1800 MOSFET 100-200 GaAsFET 100-300 EPROM 100 JEFT 140-7000 ECL 500-1500 GMOS 250-3000For anti-static electrical barrier materials, my country has1996Promulgation and implementation of national military standardsGJB2605-96, the modified standard is equivalent to the US military standardMIL–B–81705C, made a clear point on the electrostatic performance index of the barrier packaging bag, see the table:Performanceappropriate typesperformance requirementsInspection conditionsStatic decay①②③ ≤2.00s RT: 23±2°C, RH: 12%±3%EMI attenuation①② ≥25dB, ≥10dBsurface resistivity①②③ ≥10 RT: 23±2°C, RH: 12%±3%electrostatic shield①② ≤30V RT: 23±2°C,RH:12%±3%

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