Application of corona machine

Corona treatment machines are commonly known as corona machines, electronic impact machines, and electric spark machines in the packaging industry. It is academically called dielectric barrier discharge. Mainly used for plastic films or plastic

For surface treatment of sheet metal products, the above materials need to be subjected to ink printing, lamination, film blowing, coating, gluing, material modification, polymerization, coating, casting,

Before the pasting process, in order to make the surface of the product have stronger adhesion (that is, have a higher dyne coefficient) and prevent the raw materials from printing color casts and color loss during the production process,

The lamination is not strong and the glue leakage is uneven, which affects the product quality. Corona shock treatment must be carried out first.

The principle of corona machine

Corona Hefeng corona treatment machine mainly includes three parts: corona generator, corona discharge station and high-voltage transformer. The principle is to use high-frequency and high-voltage discharge to connect the discharge electrode and the electric current.

Discharge occurs between the halo silver and ionizes the air between the two poles to form a low-temperature plasma zone and generate ozone. Ozone is an oxidizing agent that can immediately change the material.

The molecular structure of the surface and the polarity of the material change. At the same time, after corona, the surface of the material shows tiny uneven holes, the surface of the material is roughened, and the surface activity increases.

, so that ink, glue, etc. can further penetrate into the material being processed, thereby achieving ideal printing and gluing effects.

Functions and characteristics of the corona machine host

* Input power: AC 3*380V±10%;

* Support 485 communication protocol;

* There are four working modes available: panel control, discharge rack detection, remote and automatic;

* The display can be divided into: touch screen and LCD display (with output power, DC voltage, current, operating frequency, line speed and process mode display);

* Use high-power inverter device IGBT imported from Germany;

* Supports external passive switch to control the start/stop of the corona generator;

* The power output value can be adjusted and given by external analog quantity (0-10) V;

* In the automatic working mode, there are two working modes: density and speed;

* In automatic mode, the process parameters of a variety of different materials can be stored for customers to call;

* The opening/closing of the discharge rack can be controlled by the DC24V solenoid valve;

* The start mode and stop delay of the external blower can be selectively controlled;

* The power value of the corona generator can be controlled by the linear speed of the corona roller;

* The linear speed of the corona roller is detected by the photoelectric switch, and the start/stop of the corona generator can be controlled by the linear speed value of the corona roller;

* There are protection corona systems such as stall protection, wind pressure protection, frame closing protection, over/under voltage protection, short circuit protection, load imbalance, high voltage open circuit protection and IGBT overload protection;

* It has a wet start function to avoid creepage when the discharge rack is wet;

* Oil-immersed high-frequency transformer (using magnetic core material imported from Germany, low temperature, high working efficiency)

* Support Chinese and English language selection;