Low VOC Water Based Printing Ink
Modern low-VOC water-based inks have undergone significant improvements in formulation, offering the following advantages:
Fast drying: Suitable for high-speed printing presses (up to 200-300 meters per minute), without trailing or smudging.
High color density: Color density close to or even exceeding that of solvent-based inks at the same ink volume, eliminating the need for increased ink application.
Good adhesion: Exhibits excellent performance on paper, cardboard, and some film substrates.
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Product Introduction
Low-VOC water-based inks are printing materials that use water as the primary solvent (typically 30%-50%) and contain only trace amounts or no volatile organic compounds (VOCs).
Binder: Primarily water-soluble acrylic or polyurethane resins, determining the ink's adhesion, gloss, and abrasion resistance.
Pigments: Utilizing surface-treated, high-performance organic or inorganic pigments to ensure dispersion stability in water-based systems.
Additives: Containing defoamers, leveling agents, antistatic agents, and trace amounts of film-forming aids (controlled at low percentages to meet low-VOC standards).
| Parameter | Value |
|---|---|
| Ink Type | Water-Based |
| Heat Resistance | 150°C – 180°C (standard) |
| VOC Content | < 1% |
| pH Value | 7.5 – 9.0 |
| Solid Content | 30% – 40% |
| Drying Method | Hot air / IR drying |
| Adhesion | Excellent (paper, film, foil) |
Applicable Scenarios and Product Types
Low-VOC water-based printing inks are widely used in the following fields, and their technological maturity is entirely reliable:
Corrugated cardboard box printing: High penetration and abrasion resistance, suitable for high-temperature and high-humidity environments in subsequent processes.
Flexographic printing: Suitable for food packaging, paper bags, labels, etc., with fast drying speed and clear dot reproduction.
Gravure printing: Suitable for flexible packaging, tobacco and alcohol packaging, etc., meeting the requirements of high-speed printing and high precision.
Screen printing: Suitable for textiles, advertising posters, etc., with a soft feel and good breathability.
Digital inkjet printing: Suitable for large-format advertising, decorative paper, etc., with vibrant colors and environmentally friendly, odorless properties.
FAQ:
Does water-based ink adhere well to plastic films?
Modern water-based inks, through the addition of special resins and crosslinking agents, exhibit very reliable adhesion to corona-treated films such as PET, BOPP, and PE. We can recommend corresponding formulations based on your substrate type and provide sample testing.
Will it affect printing speed?
No. High-quality water-based inks dry at speeds comparable to high-speed printing presses (over 300 meters per minute). With appropriate ovens or infrared drying systems, production efficiency is no different from solvent-based inks.
What about storage stability?
Low-VOC water-based inks, when stored sealed at 5-35℃, typically have a shelf life of over 12 months. Simply avoid freezing and high-temperature exposure, and stir well before use.
Can it completely replace solvent-based inks?
For paper, cardboard, textiles, and most flexible packaging, water-based inks can completely replace solvent-based inks. For certain special requirements (such as extremely high chemical resistance and ultra-low residual odor), we also have corresponding specialized water-based solutions.
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