How to choose the appropriate ink for printing A4 stickers?

Choosing the appropriate ink is crucial when printing A4 stickers. Here are some specific selection suggestions:

1、 Consider the basic properties of ink

Viscosity: A relatively stable viscosity of printing ink is one of the prerequisites for ensuring consistent printing quality. Printing ink viscosity that is too high or too low is not conducive to printing, so it is necessary to regularly check the ink viscosity and adjust it in a timely manner according to changes during the printing process.

Dry humidity: The drying speed of ink should match the printing speed, the drying capacity of printing machinery and equipment, and the area of the printed pattern. Drying too quickly may cause the pattern to fade, while drying too slowly may cause ink adhesion or dirty printed parts.

PH value (for water-based inks): Changes in the pH value of water-based inks can affect their viscosity, so appropriate pH stabilizers should be added regularly, usually between 8 and 9.

2、 Select according to printing materials

The material of A4 adhesive may be paper or film, and different materials require different types of ink. For example, paper label stickers can be printed with water-based ink, while film label stickers are more suitable for using solvent ink.

3、 Consider printing methods and standards

Different printing methods and standards also have different requirements for ink. For example, certain printing methods may require ink to have specific fluidity or adhesion.

Printing speed, the type and performance indicators of printing machinery also have a certain impact on the selection of ink.

4、 Meet the special requirements of customers

Customers may require labels to have specific effects, such as icing effect, frosted effect, or anti-counterfeiting markings. At this point, it is necessary to choose ink that can meet these special requirements.

5、 Consider the weather resistance and environmental friendliness of ink

A4 adhesive labels used outdoors need to withstand the test of wind, sunlight, and rain, so ink with good light resistance, water resistance, high temperature resistance, and corrosion resistance must be selected.

Environmental requirements are becoming increasingly strict, so ink that meets relevant environmental standards, such as water-based ink or UV ink, should be prioritized.

6、 Consider cost factors

Different types of ink have different prices, with UV adhesive printing ink usually having the highest price, followed by water-based label printing ink, and solvent based label printing ink having the lowest price.

When choosing ink, it is necessary to comprehensively consider factors such as cost, quality, and printing effect to find the best balance point.

In summary, when choosing A4 adhesive printing ink, it is necessary to comprehensively consider multiple aspects such as the basic properties of the ink, printing materials, printing methods and standards, special requirements of customers, weather resistance and environmental friendliness of the ink, and cost factors. By considering these factors comprehensively, the most suitable ink can be selected to ensure printing quality and meet customer needs.