Common problems and solutions when printing circular colored copperplate label paper

When printing circular colored copperplate label paper, a series of problems may be encountered. Here are some common problems and their solutions:

1、 Dry version issue

Reason for the problem:

The ink drying speed is too fast.

The drying temperature is too high.

The printing speed is too slow.

Solution:

Adjust the ink solvent ratio to slow down the ink drying speed.

Reduce the drying temperature appropriately.

Improve printing speed to allow sufficient time for ink to wet the surface during the printing process.

2、 Poor ink transfer

Reason for the problem:

The ink type does not match the printing material.

Ink viscosity is too high.

There is static interference.

Solution:

Replace the ink that matches the printing material.

Adjust the ink viscosity to make it more suitable for printing requirements.

Add anti-static agents to reduce static interference.

3、 Color cast issue

Reason for the problem:

Ink color deviation.

The ink drying speed is not suitable.

Poor ink stability.

Changes in printing materials and printing process performance.

Solution:

Replace the ink that meets the requirements.

Adjust the solvent ratio to control the drying speed of the ink.

Choose ink with better stability.

Adjust the printing process parameters based on the characteristics of the printing material.

4、 Static electricity problem

Reason for the problem:

The ink is too thin.

The printing speed is too fast.

The environment is too dry.

Solution:

Add anti-static agent to the ink.

Increase ink viscosity and reduce static electricity generation.

Reduce the printing speed appropriately.

Adjust environmental humidity to reduce static interference.

5、 Ink layer adhesion (dirt)

Reason for the problem:

The ink has poor dryness.

Excessive printing pressure.

The environmental humidity is too high.

Solution:

Adjust solvent ratio to improve ink dryness.

Reduce printing pressure and avoid excessive ink layer thickness.

Reduce environmental humidity and decrease the adhesion between ink and paper.

6、 Paste version

Reason for the problem:

Ink viscosity is too high.

The ink volume is too large.

Excessive printing pressure.

Solution:

Reduce ink viscosity appropriately.

Reduce the amount of ink applied to avoid ink accumulation.

Reduce printing pressure to prevent ink from being pressed into paper fibers.

7、 Unique issues with copperplate paper

Defying and Shadow:

Check the plate installation process to avoid overloading the plate pad.

Adjust the viscosity of the ink to avoid being too thick or sticky.

Dirt caused by poor ink absorption:

Use a mixture of gloss oil and anti sticking agent for printing, but note that the amount of anti sticking agent should not exceed 4%.

In summary, there are various problems encountered when printing circular colored copperplate label paper, but most of them can be effectively solved through reasonable adjustment and control. During the printing process, close attention should be paid to each link to ensure printing quality and efficiency.