During the operation of the coating machine, it will first follow two operation procedures:

  1, the process of setting the thickness of the forward roller

  2. Reversal roller coating process

Coating machine reverse roll coating and its coating window: In the pole cloth machine, the slurry coating on the coating roll is the copper foil wrapped in the vacant area of the bright roll to the reverse roll. Or on aluminum foil. Therefore, the coating process must also meet the rules of reverse roller coating. In the reversal roll coating process, if the vacancy of the two rolls is relatively small, the capillary number is low enough, that is, when the viscosity or speed is relatively small, the activities in the plan with a relatively wide speed ratio are relatively stable. Can get better coating apparent quality. If the vacancy is relatively large, when the coating speed is high, it will simply show air entrapment, and there will be many fine air bubbles on the surface of the coating. Sometimes in order to increase the output value, the advancing coating speed is selected, which can show the harmfulness of air trapping. In order to eliminate this harmfulness, the operation method of reducing the space is selected. If the space is too small, the coating roller and the back roller are kneaded with each other, and the load of the motor and reducer is additionally added, which constitutes abnormal wear. This is also one of the reasons why the coating speed of the slurry in the reverse roller is limited.

Forward roller coating and its coating window: First introduce the terminology in coating skills-coating window. Any coating method (method) has an applicable plan, which can be harmless within certain operating conditions (plan) Coating, that is, evenly coating a thin layer of fluid on the support, the plan of this coating operation is called the coating window in coating technology. In the coating machine, it is controlled by scheduling the metering gap between the two coating rollers and the metering roller that change in the same direction in the forward roller coating, and the coating of the required thickness is formed on the coating roller. The coating method is the special method of the rotating roller, that is, the speed of the metering roller is zero when the metering roller is not changed, and the cross-section of the metering roller is made into a comma shape, also called a comma scraper. The coating thickness can be adjusted by changing the interval between the comma blade and the coating roller. In this special method of forward roller coating, if the operation is improper, the position of the knife edge is contrary to the working direction, and the coating parameters and slurry parameters are not in a certain plan, it may present a vertical path harm, which is called a vertical path.

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