How to remove static electricity in PVC printing, how to deal with static electricity on printed pap

Each stage must be removed, but also corona, in the printing press to install the electrostatic device to be better, the details of the experiment is up to you.

PVC printing basically has the following problems.

1.Feida can't open PVC pieces.

Enter the printing machine to absorb dust.

3.The stacking area will be uneven due to static electricity.

Here's how to fix it:

1.The feeder uses an ion nozzle for paging.

2.The feed is installed to remove electrostatic ion rods.

3.Install electrostatic ion rods before palletizing collection.

4.Humidity is controlled at 60%.

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1. Stabilizers, lubricants, auxiliary processing agents, pigments, impact resistance agents and other additives are often added to PVC materials in actual use. It has non-flammability, high strength, resistance to climate changes and excellent geometric stability;

2. PVC is a vinyl polymer, and its material is an amorphous material. PVC materials are often added with stabilizers, lubricants, auxiliary processing agents, pigments, impact inhibitors and other additives in practical use. It has non-flammability, high strength, resistance to climate changes and excellent geometric stability;

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The discharge guide rods at all levels are grounded and discharged with carbon brushes to maintain the humidity of the workshop.

1.Static Eliminator Method.

The ions generated by the static eliminator are used to neutralize the charge on the charged body to achieve the purpose of eliminating static electricity. There are three types of static eliminators: one is the external voltage type electrostatic eliminator, which applies high voltage to the needle or fine wire electrode, and the corona discharge produces ions, which is the type of QP-40D electrostatic eliminator used in general printing presses; The second is a self-discharge static eliminator, which makes conductive fibers, conductive erasers or conductive metal materials into needle-like or fine-wire electrodes and is well grounded, and uses the electric field of the charged body itself to generate corona discharge to generate ions and neutralize the charge on the charged body, which is very slow; The third is the radioactive element in addition to the static electrostatic, the use of radioactive isotope ionization, that is, ionization of air to generate ions, neutralize the static electricity on the charged body, the cost is high, and there is radiation to the human body.

2.Inventory method.

After the paper enters the printing plant, the storage time should be appropriately longer, and the storage location can be better connected with the printing workshop, with the temperature at 18 25 and the relative humidity at 60% and 70% as the best. Make the temperature and humidity of the printing workshop consistent with the paper magazine, which is conducive to changing the moisture content of the paper. The change in the moisture content of the paper is a process of discharging static electricity.

3.Drying paper method (humidification method).

The main method is to eliminate static electricity by adjusting the main humidity. When the relative humidity in the workshop is less than 50%, it is easy to produce high static electricity in the process of printing or plate making, increasing the relative humidity of the workshop and the moisture content of the paper, especially when drying paper, increasing the indoor relative humidity is very effective in eliminating static electricity. Humidification equipment can be used to increase the relative humidity of the room, and sufficient water can be sprinkled on the ground when there is no humidification equipment.

The humidification equipment is mainly a humidifier, and a centrifugal automatic humidifier can be installed on the ceiling or wall of the workshop. When the indoor relative humidity does not meet the requirements, the humidifier can automatically spray mist water vapor, increase the indoor relative humidity, and automatically stop spraying when the indoor relative humidity reaches the requirements.

4.Antistatic agent method.

Antistatic agents are also called electrostatic eliminators or electrostatic removers. Its principle is to give hygroscopic ions on the surface of charged bodies such as paper and film, so that it has hydrophilicity, absorbs moisture in the air, reduces resistance, increases conductivity, and makes electrostatic charge not easy to accumulate. Antistatic agents are mainly surfactants, with hydrophilic and hydrophobic groups, or polar and non-polar groups.

The hydrophilic group has a strong affinity for substances with greater polarity such as water, and the hydrophobic group has a strong affinity for objects with less polarity such as oil. Antistatic agents are widely used in printing, such as using antistatic agents to make soft rubber rollers that prevent static electricity.

5.Process operation method.

In the printing process, you can add a damp towel to the delivery part, and fix the towel dipped in water on the lever, so that the paper can be eliminated by contacting the wet towel, which is a temporary but effective way to eliminate static electricity, and the disadvantage is that the towel should be wet frequently.

Humidify and sprinkle plenty of water on the floor.

Or leave the paper for more than 12 hours.

If there is static electricity, it is not good to walk the paper or love to stick to the dirty, if the latter is really not good, the paper mill will change the paper, and then not, reduce the amount of ink.

On the second floor, there is an ion air gun to remove static electricity or increase the ambient humidity to reduce paper friction.

Increase the air humidity in the plant. 50%--70%! Use an ionizing fan to blow this, if the static electricity is too high, use an ionizing air gun! Tianjin strength.

How to deal with static electricity on printed paper:

1. It can be controlled from the moisture content of the printed paper;

2. The method of installing air conditioning in the printing workshop can also be adopted, and the humidity of the printing workshop should be about 50 degrees;

3. It is also possible to install anti-static equipment in the printing workshop, such as electrostatic hair dryers, electrostatic rods, etc., which can effectively weaken the static electricity on the surface of the printed paper, and the installation of humidification equipment can improve the air conductivity of the workshop when printing products, so as to effectively prevent the printing paper from being gathered.

Increase the humidity of the workshop, and add a static elimination device at the paper feed.

Take it with the thin wire to conduct electricity, or shake the paper, it should still be okay, as long as the static electricity is conducted, there is a catalyst.

Unless your plastic cup is made is to add anti-static agent, which may be better, I am making aluminum foil packaging bags,

To put it simply, there are now electrostatic treatment agents that can remove static electricity, and can be removed by equipment adsorption if additives cannot be used.

In general, humidity, grounding, electrostatic neutralization, scraper speed, printing intervals, screen tension and screen spacing are all effective factors in reducing or avoiding static electricity. There are 2 ways to remove static electricity:

It is best to install humidity and temperature control equipment, which can not only effectively control static electricity, but also reduce or eliminate various factors that affect the quality of printing.

Use a static eliminator. Some static eliminators utilize a metal ground wire to neutralize the electrostatic charge, and the two commonly used are metal foils and conductive brushes. A static eliminator is to produce two ions, positively and negatively, in the air, and when any electrostatic body passes through it, the corresponding oppositely charged ions are neutralized with it, eliminating the static electricity.

Nowadays, many printing equipment uses a static elimination device, so you can use it with confidence.

Electrostatic charge is a common problem in printing. As the paper passes through the press, it becomes charged. When the same paper is sent back from the press, the paper has a lot of charge on it, causing the paper to stick to each other.

Solution: Whenever an object comes into contact with and separates from the surface of another object, it causes an imbalance of charges on the surface of both, resulting in an electrostatic charge (electrostatic field). Industrial ionization is one of the ways to solve this problem. This is the use of an ion beam in the vicinity (inches) of the surface of an object, so that the surface of the object is surrounded by a large number of positive and negative ions.

Essentially, this process only neutralizes the electrostatic charge on one side of the surface of the object, thereby reducing the induced charge. Ionizing fans are used on both sides of the paper to minimize static electricity. In general, ion beams should be used on objects after contact and separation, and in places where static electricity is particularly serious, they should first be ionized with a c-crown ion blower.

Increasing air humidity reduces the generation of static electricity.

Wear anti-static overalls for operation.

The floor is treated with an anti-static coating.

The power supply and machine should be grounded with anti-static electricity.

1. When installing the printing machine, the grounding wire must be installed, and the ink circulation pump should also take the grounding wire.

2. Control the environmental sanitation of the workshop, keep it clean and reduce dust.

3. Control the temperature and dry humidity of the workshop, the workshop temperature is best controlled at the standard temperature of 18 -25, and the humidity is between 55 -75.

4. Install static eliminators in various parts of the printing machine. High-grade printing machines are equipped with static eliminators, and those that are not installed should be purchased and installed by themselves.

5. The printing manufacturer should spare the antistatic agent by itself, and in case of serious static electricity, it should be filled in the ink to eliminate static electricity.

6. In the case of burrs and missing marks, the working viscosity of the printing ink should be improved, and the slow-drying thinner should be used to reduce the speed.

Common static electricity problems in the printing industry:

1.Post-press processing: uneven paper delivery, product adsorption blades, etc.;

2.Printing quality Electrostatic torsion of ink droplets on the surface of the material - resulting in ghosting or excessive inkjet;

4.Workers Experiencing Electric Shocks Industries that use synthetic materials (e.g., plastics) generate high levels of static electricity.

5.Static electricity can cause the printhead to 'drip ink' or become contaminated by ink spray.

The static eliminator used in different parts is also different:

Problems at the feeding part.

Static electricity can cause paper to stick, resulting in poor feeding, double feeding, and even paper jams in the feeder.

2.Or install a 1250s ion rod at 10cm above the paper pile to eliminate the static electricity in the paper refiller;

3.An ionix airflow static eliminator is installed on the air line between the feeder air pump and the feeder to eliminate the static electricity of the paper feed.

Install air humidifier equipment in the printing workshop to adjust and maintain a constant temperature and humidity in the printing workshop according to the strength of the paper static electricity. Under normal circumstances, the temperature of the workshop is adjusted between 18 and 20, and the relative humidity of the air is kept between 60 and 65. If the paper is more electrified, you can adjust the relative humidity of the air to between 80 and 85.

Install a static eliminator on the printing press to eliminate static electricity on the paper. The static eliminator is adjustable and eliminates the static electricity of the paper by adjusting the voltage and frequency. When the static electricity of the paper is large, use high voltage and high frequency, and when the paper static electricity is not large, turn down the voltage and frequency.

The principle of using an isotope emitter to eliminate static electricity in printing is basically the same as that of an isotope emitter and an electrostatic eliminator, both of which ionize some air molecules into ions. Because ions have different charges, when the paper passes through the ionic space, a part of the electrostatic charge will be neutralized, so that the purpose of eliminating static electricity is achieved.

Printing equipment will generate a lot of heat when it is running, the humidity in the workshop is low, and the paper is prone to static electricity and crimping. To avoid this, simply increase the relative humidity in the air. By using a humidifier in the printing shop, the humidity can be kept in the range of 55%-65%RH steadily.

The high-pressure micro-mist humidification fog particles are delicate and cover a wide area, which can quickly reach 55% 65%RH and avoid printing failures. It can quickly eliminate static electricity in the printing process and reduce downtime, double sheeting, inaccurate overprinting and other failures.

The best way to do this is to humidify the workshop and control the temperature and humidity.

Do not add a variety of static eliminators on the machine, the harm will be great, mainly the external power supply facilities will damage the circuit board of the machine, electric eyes and other facilities.

Appropriately increase the air humidity in the workshop, and if there is no equipment, the ground water will also be effective. You can also try to connect the steel ruler to the conductor wire and the basin to the ground.

It depends on what scene you are, if it is the unevenness of the surface of the printed matter, causing static electricity problems, you can choose to use the 3850 controllable static eliminator, so that the effect may be better.