How to use the leveling agent for curtain coating ink
The use of leveling agents for pouring inks usually involves the following steps,
which are designed to ensure that the leveling agent can be evenly and effectively
dispersed in the ink and achieve the best leveling effect:
1. Choose the right leveling agent
Choose according to the type of ink:
Different types of inks may require different types of leveling agents. For example,
solvent-based inks and water-based inks may require different leveling agents.
When choosing, ensure the compatibility of the leveling agent with the ink to avoid
adverse reactions or affect the ink performance.
Consider the purpose of the ink:
The purpose of the ink (such as packaging printing, advertising printing, etc.) will also
affect the choice of leveling agent.
According to specific needs, choose a leveling agent that can meet the requirements of
printing effect and gloss.
2. Determine the amount of addition
Empirical dosage:
Usually, the amount of leveling agent added is between 0.1% and 1% of the total amount
of ink.
But this is only an empirical range, and the specific amount of addition should be adjusted
according to the ink formula, printing process and substrate characteristics.
Test determination:
Before actual use, it is recommended to determine the optimal amount of addition through
a series of tests.
The best balance can be found by changing the amount added and observing the changes in
the printing effect.
3. Dilution and mixing
Pre-dilution:
Some leveling agents may need to be pre-diluted with solvents first so that they can be better
dispersed in the ink.
The pre-dilution ratio should be based on the type of leveling agent and the manufacturer's
recommendations.
Fully stir:
Slowly pour the diluted leveling agent into the ink and use a mixer to stir it fully at the maximum
speed.
The stirring time should be determined according to the characteristics of the leveling agent,
generally not more than 10 minutes, to ensure that the leveling agent is evenly dispersed in the ink.
4. Adjust the printing process
Coating method:
According to the requirements of the printing process, select a suitable coating method (such as
pouring, brushing, roller coating, etc.).
Different coating methods may affect the leveling effect of the ink, so they need to be adjusted
according to the actual situation.
Drying conditions:
Drying temperature and drying time are also important factors affecting the leveling of the ink.
The drying conditions should be adjusted according to the formula of the ink and the characteristics
of the leveling agent to obtain the best leveling effect.
5. Precautions
Avoid excessive addition:
Excessive addition of leveling agent may cause ink performance degradation, such as reduced gloss,
poor printing effect, etc.
Therefore, the amount of addition should be strictly controlled to avoid excessive addition.
Storage conditions:
The leveling agent should be stored in a cool, dry, well-ventilated place, away from direct sunlight and high
temperature.
After long-term storage, the performance of the leveling agent should be checked for changes, and if necessary,
it should be retested and adjusted.
Safe operation:
When using the leveling agent, the relevant safety operating procedures and environmental protection
requirements should be followed.
Avoid direct contact with the skin and eyes. If accidentally contacted, rinse with plenty of water immediately and
seek medical attention.
In summary
The use of the leveling agent for pouring ink involves selecting the appropriate leveling agent, determining the
amount of addition, diluting and mixing, adjusting the printing process, and precautions. By following these steps
and precautions, you can ensure that the leveling agent has the best leveling effect in the ink, thereby improving the
quality and visual effect of the printed product.
