In order to strictly control the quality, strive for a larger foreign market, and ensure the safe transportation of goods, it is extremely important to understand the hazards and preventive measures of static electricity generated during the storage of goods packed in tons of bags. The hazards of static electricity have received considerable attention in the packaging industry, but in the storage and transportation of packaged goods, the hazards and prevention of static electricity are still a weak link.
There are two main reasons why packaged items generate static electricity during storage:
1. Internal reasons, that is, the electrical conductivity of the material;
2. External reasons, that is, mutual friction, rolling, and impact between substances.
The packaging of many products has internal conditions caused by static electricity. In addition, the goods packed in tons of bags are also inseparable from handling, stacking, covering and other operations during the storage process, so friction and rolling effects will inevitably occur between the packages.
In the process of stacking plastic packaging of general commodities, static electricity is easily generated due to mutual friction. When a high electrostatic potential develops on the surface of the package, it is easy to generate electrostatic sparks.
Its harm is mainly manifested in two aspects:
1. Cause a fire accident.
For example, the contents of big bags are flammable substances. When the volatilized steam and air reach a certain ratio, or the solid dust reaches a certain concentration (IE, explosion limit), an explosion will occur once it encounters electrostatic sparks.
2. Electric shock phenomenon.
For example, electrostatic high-potential discharge will be generated during the handling process, which will bring the discomfort of electric shock to the operator, which often occurs when the warehouse is handling plastic-packaged goods. In the process of handling and stacking, due to strong friction, electrostatic high-potential discharge occurs, and operators are knocked down by electrostatic discharge.