How to treat the surface of BOPP synthetic label paper to improve printing quality?

To improve the printing quality of BOPP synthetic label paper, the following aspects can be taken into account:

1、 Corona treatment

Principle: By using the discharge (commonly known as corona) method, the polarity of the paper surface is increased through oxidation, thereby improving the adhesion and printing effect of ink.

Method: Use printing equipment with corona treatment or flame impact treatment function to perform surface treatment on BOPP synthetic label paper before printing.

matters needing attention:

The effect of corona treatment will decay over time, so it should be reprocessed regularly as needed.

The degree of processing should be moderate to avoid excessive oxidation causing the film to become brittle and affecting mechanical strength.

2、 Plasma treatment

Principle: Utilize high-energy particles in plasma to bombard the surface of materials, increasing their surface energy and printing adhesion.

Method: Use high-energy surface treatment methods, such as plasma treatment equipment, to treat the surface of BOPP synthetic label paper.

Advantages: Long lasting processing effect, suitable for occasions with high requirements for printing adhesion.

3、 Optimize ink selection

Principle: Choose specialized ink suitable for BOPP synthetic label paper, which should have good fluidity and adhesion.

matters needing attention:

Ensure that the ink can evenly adhere to the surface of the paper, forming a clear and full printing effect.

Pay attention to the drying speed and curing performance of ink to avoid adhesion and blurring.

4、 Adjust printing process parameters

Printing pressure: Reasonably adjust the printing pressure of the printing machine to ensure that ink can be evenly transferred to the surface of the paper, while avoiding excessive pressure that may cause paper deformation or ink penetration.

Printing speed: Control the printing speed to allow sufficient time for the ink to spread and dry on the surface of the paper, avoiding uneven or blurry printing caused by too fast a speed.

Drying temperature: Adjust the drying temperature according to the drying characteristics of the ink to ensure that the ink can dry quickly at an appropriate temperature, avoiding the occurrence of adhesion and blurring.

5、 Control the production environment

Humidity and temperature: Maintain stable humidity and temperature in the printing workshop to avoid excessive humidity causing moisture absorption and deformation of paper or uneven ink diffusion, as well as high temperature causing rapid ink drying or paper deformation.

Cleanliness: Ensure the cleanliness of printing equipment and environment, avoiding dust, impurities, and other contaminants that can contaminate the paper surface and affect the printing effect.

In summary, by using methods such as corona treatment, plasma treatment, optimizing ink selection, adjusting printing process parameters, and controlling production environment, the surface of BOPP synthetic label paper can be effectively treated to improve printing quality. In practical operation, appropriate treatment methods should be selected based on specific situations, and various factors should be comprehensively considered to achieve the best results.