Humidification equipment for packaging and printing factories

Humidification equipment for packaging and printing factoriesWhy do printing factories use humidifiers? We know that paper is a material with strong water absorption. If the humidity is too low during the paper making process, it will cause weak adhesion of the paper, resulting in fragile and inelastic paper; If the humidity is too high, the paper produced will be very soft, weak in toughness, and easily torn. Therefore, it is necessary to control the humidity in the printing workshop in order to produce * printed products.

1、 The relationship between printing workshop and humidity

1. The humidity in the printing workshop should be controlled between 48% and 65%, with 50% to 55% of the workshop humidity being suitable.

2. The humidity will vary according to the changes in windy and rainy weather throughout the year, so if the humidity cannot be controlled, it will invisibly cause losses to the enterprise.

3. The strength of static electricity is closely related to the dry humidity of the environment. Static electricity is more active in a relative humidity environment of 30%, and the lower the humidity, the more active it is. Static electricity will weaken with increasing humidity and basically disappear in environments with humidity above 55%.

4. Different types of paper have different expansion and contraction rates. If the paper cannot reach a humidity balance with the environment, it will cause the following situations: the paper absorbs moisture and expands, loses moisture and shrinks, and severe deformation can result in overprinting or inaccurate alignment of the front and back due to expansion and contraction, or uneven expansion and contraction of the printed paper, which will bring a lot of trouble to the next processing step.

5. The paper powder contained in paper and the dust contained in the air fly around in dry rooms, which have varying degrees of impact on the quality of printed materials. When the indoor humidity exceeds 50%, various dust particles absorb moisture and become heavier and fall to the ground.

IIHumidification equipment for packaging and printing factoriesFunction:

1. Eliminate static electricity. Paper is prone to static electricity. Staff often experience electric shock and static electricity, especially during the dry seasons of autumn and winter. The strength of static electricity is closely related to environmental humidity. Static electricity is more active at a relative humidity of 30%, and the lower the humidity, the more active it is. As the humidity increases, it gradually weakens and disappears in environments with humidity above 50%.

2. Avoid wrinkling. The reason for paper wrinkling is due to phenomena such as "ruffle edges" or "tight edges", which prevent the paper from being flat and stretched, resulting in wrinkles during printing. This phenomenon will cause a large amount of waste to appear in the printer.

3. Prevent expansion and deformation. Due to different types of paper, their expansion and contraction rates vary. If the paper cannot reach humidity balance with the environment, it will cause the following situations: the paper absorbs moisture and expands, and loses moisture and shrinks. When the deformation is severe, the monochrome printing machine cannot be overprinted. When printing with multiple colors, there may also be a phenomenon of one color elongating one by one, or the dragging part forming a fan-shaped "swinging angle", resulting in overprinting or inaccurate alignment of the front and back sides due to stretching, or uneven stretching of the printed paper, which brings a lot of trouble to the next processing step.

4. Reduce paper dust. The paper powder contained in paper and the dust contained in the air fly around in dry rooms, which have varying degrees of impact on the quality of printed materials. When the indoor humidity exceeds 50%, various dust particles absorb water and become heavier, falling to the ground.

3、 Selection of Humidifiers for Printing Workshops

For printing workshops with relatively small space or good sealing, the required humidification capacity is generally not high when the workshop area is less than 2000 square meters, ranging from a few kilograms to hundreds of kilograms per hour. Generally, choosing a Decheng steam type mobile humidifier can meet the requirements. At this point, evaporative humidifiers are an economically reliable form of humidification. Steam type humidifiers are generally easy to use, simple to install, stable to operate, and have low operating costs.

When choosing a steam type humidifier, the following points should be mainly noted:

1. The quality of equipment is very important;

2. In addition, the technical parameters of the equipment are also very important;

3. The power consumption of the equipment must not be ignored, as it determines the operating cost.

4. In addition, it is necessary to choose some highly intelligent evaporative humidifiers.

Ensuring a relatively stable humidity in the printing workshop is an important part of printing work for printing enterprises, which can reduce problems such as paper deformation, inaccurate overprinting, and static electricity. Practice has proven that scientifically using humidifiers to provide suitable humidity conditions for printing processing can effectively achieve the above goals. The ultrasonic atomizer humidifier produced by Riye Electric uses the principle of high-frequency oscillation of ultrasonic waves to atomize water into 1-5 micron ultrafine particles. Through a pneumatic device, the water mist is diffused into the air to achieve uniform humidification of the air.

Related knowledge understanding:

1. The moisture content of paper should be controlled between 45-55% to reduce static electricity as the moisture content increases until it disappears.

2. The relative humidity in the printing workshop should be controlled at 50-55%. It is worth noting that in cold seasons, the air humidity in heated factories may drop sharply due to air conditioning heating.

3. Anti static equipment such as electrostatic blowers can effectively weaken the power of static electricity; Humidification equipment can increase the conductivity of air, thereby preventing electrons from accumulating on paper.