How to choose the number of mesh rollers for printing A4 stickers?

When choosing to print A4 stickers, the selection of the number of mesh roller lines is a key factor, which directly affects the quality and effect of the printed product. Here are some suggestions to help you choose the appropriate number of mesh roller lines for printing A4 stickers:

1、 Understand the concept of the number of lines on the mesh roller

The number of lines on the mesh roller refers to the number of ink holes per unit length on the surface of the mesh roller, also known as LPI (Lines Per Inch). The higher the number of lines, the smaller the ink transfer volume, and vice versa.

2、 Select the number of lines according to printing requirements

Text printing:

Text printing requires clear outlines and edges of the printed material, and no blurring or ink overflow is allowed.

It is recommended to choose a mesh roller with LPI between 120 and 150 to ensure the clarity of text printing.

On site color block printing:

On site color block printing requires full and uniform colors.

It is recommended to choose a mesh roller with LPI of 200 or above to ensure color reproduction and continuity.

Mixed printing (text+color blocks):

If you need to print both text and color blocks simultaneously, you can choose a moderate number of lines, such as LPI between 150-200, to balance the printing effect of text and color blocks.

3、 Consider other factors

Substrate material:

The material of the adhesive will affect the transfer effect of the ink. For example, stickers with rough surfaces may require lower thread count to increase ink transfer volume; Smooth surface stickers may require a higher number of lines to reduce ink transfer and avoid dot expansion.

Ink quality and viscosity:

The quality and viscosity of ink can also affect the selection of mesh rollers. High quality ink usually has better fluidity and adhesion, and may require a lower number of lines to avoid ink accumulation; Ink with higher viscosity may require a higher number of lines to ensure that the ink can be evenly distributed on the mesh roller.

Printing equipment:

Different printing equipment also have different requirements for the mesh roller. When choosing a mesh roller, it is necessary to ensure its compatibility with the printing equipment and follow the recommendations of the equipment manufacturer.

4、 Actual testing and adjustment

Print test samples:

Before formal printing, test samples can be printed to evaluate the impact of different numbers of mesh rollers on the printing effect.

Adjust according to the test results:

Adjust the number of lines on the mesh roller to achieve the best printing quality based on the printing effect of the test sample.

In summary, selecting the appropriate number of mesh rollers for printing A4 stickers requires comprehensive consideration of printing requirements, substrate material, ink quality and viscosity, and printing equipment. Through actual testing and adjustment, the optimal number of lines can be found to meet specific printing requirements.