How to solve the problems in the use of water-based BOPP plastic ink
Date: Dec 26 2023 From: Star Color
As an environmentally friendly and efficient printing ink,
water-based BOPP plastic ink is widely used in packaging, label and other printing fields.However, in the use of the process, you may encounter some problems, such as uneven printing, poor drying, adhesion is not firm.This article will introduce in detail the methods to solve the problems in the use of water-based BOPP plastic ink, aiming to help readers better use this ink.
Uneven printing
Uneven printing is one of the common problems in the use of water-based BOPP plastic ink.This may be caused by uneven ink viscosity, too fast printing speed or unreasonable printing layout design. Solutions to this problem include:
1.Check the viscosity of ink.If the viscosity is too high, you can add the right amount of water or ink oil to adjust;If the viscosity is too low, you can increase the amount of coating or adjust the speed of the press.
2.Check printing speed.If the speed is too fast, the speed of the press can be reduced, so that the ink has enough time to dry and adhere to the film.
3.Check the print layout.If the layout is not reasonable, you can adjust the layout to ensure that the ink can be evenly coated on the BOPP film.
underdry
Poor drying is also one of the common problems in the use of water-based BOPP plastic ink.This may be due to the drying temperature is too low, the drying time is too short or the quality of the ink itself caused by other reasons.Solutions to this problem include:
1.Adjust drying temperature.If the drying temperature is too low, the drying temperature can be increased;If the temperature is too high, the drying temperature can be reduced to avoid damage to the film.
2.Adjust drying time.If the drying time is too short, the drying time can be extended;If the time is too long, the drying time can be shortened to avoid excessive drying of the ink resulting in bubbles on the surface of the print.
3.Check the quality of the ink itself.If there is a problem with the quality of the ink, you can replace the qualified ink or contact the ink manufacturer to solve the problem.
The adhesion is not strong
Weak adhesion is also one of the common problems in the use of water-based BOPP plastic ink.This may be caused by incompatibility between the ink and the film, insufficient coating amount or improper printing process.Solutions to this problem include:
1.Check the compatibility of ink and film.If the ink is not compatible with the film, you can replace another type of ink or pretreat the film to improve the adhesion of the ink.
2.Adjust the amount of coating.If the coating amount is insufficient, the coating amount can be increased;If the amount of coating is too much, the amount of coating can be reduced to avoid excessive accumulation of ink on the film leading to unstable adhesion.
3.Check the printing process.If the process is improper, you can adjust the printing process parameters, such as pressure, temperature, etc., to improve the adhesion of the ink.
Bubble problem
The bubble problem is also one of the common problems in the use of water-based BOPP plastic ink.This may be due to the presence of gas in the ink itself, the printing speed is too fast or the drying temperature is too high.Solutions to this problem include:
1.Before printing, the ink is placed for a period of time so that the gas in the ink is fully released.
2.Adjust printing speed.If the printing speed is too fast, the speed of the printing press can be reduced, so that the ink has enough time to defoaming and adhere to the film.
3.Adjust drying temperature.If the drying temperature is too high, the drying temperature can be reduced to avoid excessive thermal effect on the ink resulting in bubbles.
Caking problem
The caking problem is also one of the common problems in the use of water-based BOPP plastic ink.This may be caused by the poor quality of the ink itself, improper storage or incorrect use.Solutions to this problem include:
1.Change ink brand.If the quality of the ink itself is not good, you can try to replace other brands of ink.
2.Store and use ink correctly.Before use, the ink should be fully stirred to avoid agglomeration;After use, the ink should be sealed and stored to avoid direct sunlight and pollution.
3.Filter ink before use.Before printing, tools such as filters can be used to filter impurities and clumps in the ink to ensure good fluidity of the ink.
As an environmentally friendly and efficient printing ink, water-based BOPP plastic ink is widely used in packaging, label and other printing fields.In the process of use may encounter some problems such as uneven printing, poor drying, adhesion is not firm.These problems can be effectively solved by mastering the correct use method, paying attention to details and strengthening quality control measures, so as to better apply this ink to improve printing quality and efficiency, reduce costs and reduce the impact on the environment.It is hoped that the introduction of this article will be helpful and inspiring to readers and also hope that readers can flexibly use continuous innovation and development according to the actual situation to make water-based BOPP plastic ink better play its advantages to promote the development of green printing industry to contribute.
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