What environmental factors should be paid attention to in the production of tag coated paper?

In the production process, the environmental factors that need to be paid attention to mainly include temperature and humidity, air quality and possible pollution control. Here's a breakdown of these factors:

First, temperature and humidity control

1. Suitable ambient temperature and humidity

Temperature: The general suitable printing environment temperature for ordinary paper is about 20℃. When the ambient temperature exceeds 38℃, the mechanical properties of the paper will be significantly reduced; When the ambient temperature is lower than 10 ° C, the paper will become brittle, and the adhesion of the ink layer on its surface will decrease during the printing process, which is easy to cause deinking. For this special purpose paper, although its specific temperature requirements may be slightly different, but in general should also follow this principle, to maintain the appropriate temperature to ensure the stability of the paper and printing quality.

Humidity: Paper has strong hydrophilicity, and the change of environmental humidity will directly affect the water content and dimensional stability of the paper. Generally speaking, the storage environment humidity of coated paper is controlled between 40% and 50%. If the humidity is too high, the paper will absorb water and expand, resulting in size changes; If the humidity is too low, the paper will lose water and shrink, which also affects the dimensional stability and printing effect.

2. The influence of temperature and humidity on the performance of paper

Paper size change: a slight change in ambient temperature and humidity will change the water content of the paper, resulting in a smaller or larger paper size. This change is enough to affect the final printing quality for large batch printing products.

The change of paper strength: the increase of paper moisture content will reduce its tensile strength and surface strength; However, too low water content will make the paper brittle and hard, and it is easier to produce electrostatic charge when printing.

Second, air quality control

1. Dust and impurities

The production workshop should maintain good ventilation and cleanliness to reduce dust and impurities in the air. Dust and impurities attached to the surface of the paper will affect the printing effect and beauty.

2. Volatile Organic Compounds (VOCs)

In the production process of tag coated paper, materials containing VOCs such as inks and adhesives may be used. These materials will volatilize harmful gases during use, which will affect the air quality of the workshop. Therefore, environmentally friendly materials with low VOCs should be selected, and effective measures should be taken to reduce volatilization during use.

Third, pollution control

1. Waste water and waste gas treatment

The waste water and waste gas generated in the production process shall be discharged after treatment to meet the standards. The wastewater can be treated by discharging it into the municipal sewage network after pretreatment. Exhaust gas treatment can be set up exhaust gas collection and treatment devices (such as two-stage activated carbon adsorption devices) to ensure that exhaust gas emissions meet national or local standards.

2. Solid waste treatment

The generated solid waste such as waste film, waste chemical containers, etc., should be classified, collected and disposed of in accordance with relevant regulations. The hazardous waste shall be stored in a special storage place and entrusted with the disposal of hazardous waste qualified institutions.

In summary, the environmental factors that need to be paid attention to in the production process mainly include temperature and humidity control, air quality control and pollution control. Scientific and reasonable environmental management and control measures can ensure the smooth progress of the production process and the stable improvement of product quality.