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  • Defoamers for water-based printing inks can improve the quality of printing

    By : Zilibon Chemical
    2025/4/14
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    In the field of printing, water-based inks are widely used because of their environmental protection and safety advantages. However, water-based inks are prone to foaming during use, which not only affects the printing quality, but may also lead to reduced production efficiency. The emergence of defoamers for water-based printing inks provides an effective way to solve this problem.
    The foam in water-based printing inks mainly comes from the composition of the ink itself and the stirring, vibration and other operations during the printing process. Water-based inks contain a large amount of surfactants, which are dispersed and interact with each other in the solution, and are easy to form stable foams.

    The presence of foam can bring many hazards to flexographic printing. First, foam will affect the transmission and transfer of inks, resulting in quality problems such as unclear printed patterns and uneven colors. Secondly, foam will reduce the viscosity of the ink, affect the adhesion and drying speed of the ink, and then lead to a decrease in the wear resistance and water resistance of the printed product.

    The defoamer for water-based printing inks has a low surface tension and can quickly spread on the surface of the foam, making the foam liquid film thinner locally, and eventually causing the foam to burst. Defoamers can destroy the elasticity of the foam film and make it lose stability, thereby achieving the purpose of defoaming.

    Defoamers for printed water-based inks play an important role in flexographic printing. They can effectively solve the foam problem in the ink and improve printing quality and production efficiency. When selecting and using defoamers, multiple factors such as defoaming and anti-foaming performance, chemical stability, impact on ink performance, cost factors, and environmental protection should be considered comprehensively to ensure its effectiveness in flexographic printing.
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