Kraft paper is used in a variety of printing, especially in dry weather, Kraft paper in printing will produce static electricity, resulting in the inability to continue printing. So is there a way to solve the problem of electrostatic electricity generated by Kraft paper?
In the printing process, Kraft paper is transported under the friction between the conveyor tape and the press wheel when it is separated in the pile of papers. Between paper and paper, between paper and machine, always in a state of friction. The charge generated during friction. When the charge gathers, Kraft paper carries an electric charge. When Kraft paper with the same polar charge, Kraft paper is mutually exclusive, resulting in printing overprinted is not allowed to be out of touch with paper. When Kraft paper has a different kind of charge, resulting in double sheets as well as multiple sheets, overprinted is not allowed and so on. The surface of the paper with static electricity is also easy to adsorb some paper hair and dust, so it is important to eliminate the static electricity of the paper when printing.
Kraft paper eliminates electrostatic method, one is to use electrostatic eliminator elimination. The electrostatic eliminator used in the printing press has an inductive electrostatic eliminator, a high-frequency high-voltage electrostatic eliminator, and is installed to the best near the drum.
The second is to improve the humidity in the printing shop. The production of electrostatic is related to the humidity of the operating environment, the general workshop humidity is less than 40%, easy to appear static electricity. So when printing, sprinkle some water around the pile of paper and the machine, or use an air humidifier to adjust to improve the humidity in the printing shop to avoid the generation of static electricity. The third is to carry on the humidification treatment to the Kraft paper. When the water content of Kraft paper is low, it is easy to bring static electricity.
When the paper with static electricity is serious, it is necessary to stack the paper into a more humid environment for a period of time, but to prevent excessive moisture caused the ‘ lotus leaf edge ‘ phenomenon.
