Spray ink dispersants: the core code to improve quality and decoding of application advantages
Spray ink dispersants play an important role in ink formulation and printing process, and their
application advantages are mainly reflected in the following aspects:
1. Improve pigment dispersion efficiency and stability
Efficient dispersion:
Dispersants adsorb on the surface of pigment particles to form a protective film, reduce the interaction
force between particles (such as van der Waals force, electrostatic effect, etc.), make the pigment more
easily dispersed in the ink system and avoid agglomeration. For example, in the dispersion of organic
pigments (such as phthalocyanine blue and quinacridone red), dispersants can significantly shorten
the grinding time and improve production efficiency.
Long-term stability:
Dispersants prevent pigment particles from reaggregating during storage or use through steric hindrance
or electrostatic repulsion, ensuring the long-term stability of ink. This is especially important for ink
products that need to be stored or transported for a long time.
2. Optimize ink performance and printing quality
Improve fluidity and leveling:
Dispersants can reduce the viscosity of inks, improve their fluidity, make inks easier to spread evenly
during printing, and reduce surface defects such as orange peel and shrinkage. For example, in gravure
printing, dispersants ensure that the ink can maintain good leveling properties at high speeds.
Improve gloss and transparency:
By optimizing the dispersion state of the pigment, dispersants can make the pigment particles finer and
more uniform, thereby improving the gloss and transparency of the ink. This is especially important for
printed products that require high gloss or transparency (such as high-end packaging and cosmetic labels).
Enhance adhesion and wear resistance:
Dispersants can improve the wettability between the ink and the substrate, allowing the ink to better adhere
to the surface of the substrate and improve the adhesion of the printed product. At the same time,
dispersants can also enhance the wear resistance of the ink and extend the service life of the printed product.
3. Adapt to environmental protection and safety requirements
Application of environmentally friendly dispersants:
With the increasingly stringent environmental regulations, the demand for environmentally friendly inks such
as water-based inks and UV inks is increasing. Dispersants have also developed environmentally friendly
products accordingly, such as APEO-free (alkylphenol polyoxyethylene ether) dispersants, which not only meet
environmental protection requirements, but also maintain good dispersion properties.
Reduce VOCs emissions:
In water-based inks, the application of dispersants can reduce the use of organic solvents, thereby reducing the
emission of volatile organic compounds (VOCs) and improving the air quality of the printing workshop.
4. Improve production efficiency and reduce costs
Shorten production cycle:
By improving the dispersion efficiency of pigments, dispersants can shorten the grinding time of inks, speed up
production, and improve production efficiency. This is especially important for printing companies that need to
respond quickly to market demand.
Reduce raw material consumption:
Dispersants can make pigments more fully dispersed in the ink system and reduce pigment waste. At the same
time, dispersants can also improve the stability of inks and reduce the scrap rate caused by ink deterioration,
thereby reducing production costs.
Optimize printing process:
The application of dispersants can improve the printing adaptability of inks, such as reducing printing pressure,
increasing printing speed, etc., thereby optimizing the printing process and improving printing efficiency and
quality.
5. Expand the application field of inks
Printing of special substrates:
With the development of printing technology, more and more special substrates (such as plastic films, metal foils,
textiles, etc.) are used in the printing field. Dispersants can be optimized for the surface characteristics of different
substrates to improve the adhesion and printing effect of inks on these substrates.
Development of functional inks:
Dispersants can also be used in the development of functional inks, such as conductive inks, anti-counterfeiting inks,
etc. By optimizing the dispersion state of pigments, dispersants can improve the performance and stability of functional
inks to meet special application requirements.
