Future trends of water-based ink in plastic film printing

发布时间：2026/07/06 | 浏览量：1

In the field of plastic film printing, water-based inks are gradually replacing traditional solvent-based inks due to their environmental friendliness and technological advantages. As a representative in the industry, Green Spring Water-based Ink has demonstrated significant competitiveness in the printing of plastic films such as PE, BOPP, and PVC. It is widely used, especially in fields with strict hygiene requirements such as food and pharmaceutical packaging. Its core advantage lies in using water as the solvent, significantly reducing volatile organic compound (VOC) emissions, minimizing atmospheric pollution and fire risks, and aligning with the global trend of green packaging. In terms of operational safety, this ink is non-toxic, non-flammable, and harmless to the health of printing personnel. Additionally, the residual toxicity of the printed products is low, making them suitable for materials that come into direct contact with food. In terms of printing performance, Green Spring Water-based Ink exhibits stable ink properties, strong adhesion, excellent water resistance, and a drying speed that can be enhanced by hot air assistance for efficient production. It also supports gravure and flexographic printing processes, meeting diverse needs. In terms of cost-effectiveness, the ink can be diluted with water to adjust its viscosity, reducing solvent consumption and scrap rates, making it more economical for long-term use. Despite facing technical challenges such as improving adhesion (which requires optimization through resin modification) and relying on hot air equipment for drying speed, Green Spring is promoting the popularization of water-based inks in the high-end packaging field through continuous research and development, providing an innovative path for the sustainable development of the industry.
Water-based ink has significant application potential and environmental advantages in plastic film printing. The following is a detailed analysis:
1. Application areas
Water-based ink has been successfully applied to the printing of plastic films such as PE, BOPP, PVC, PET, and PP, especially in packaging fields with strict hygiene requirements such as food and pharmaceuticals. Applications include shopping bags, vest bags, continuous roll bags, express delivery bags, and biodegradable bags. It is compatible with gravure and flexographic printing processes and is gradually replacing traditional solvent-based inks in plastic flexible packaging printing.
II. Core Advantages
Water-based ink uses water as the main solvent, completely eliminating organic solvents during production. Therefore, it is non-flammable, non-explosive, odorless, and non-toxic, significantly reducing the risk of fire and harm to the health of operators. Its VOC (volatile organic compound) emissions are extremely low, meeting strict global environmental regulations and making it particularly suitable for packaging and printing of food, pharmaceuticals, children’s toys, and other products with strict hygiene requirements. It is non-toxic, non-flammable, non-explosive, and highly safe, effectively reducing toxic substances remaining on the surface of printed materials. It is especially suitable for packaging and printing in the food, pharmaceutical, children’s toys, and other fields with strict hygiene requirements. Water-based ink has stable ink properties, does not corrode printing plates, is easy to operate, and is relatively inexpensive. It has strong post-printing adhesion, good water resistance, and fast drying speed (printing speed can reach 150-200 meters per minute). However, due to the high boiling point and large heat of vaporization of water, printed materials dry slowly, often requiring hot air drying devices, and may absorb moisture and stick together in high humidity environments. In addition, the glossiness of water-based ink printing is usually not as bright as that of solvent-based ink; it can be diluted with water to adjust viscosity, reduce solvent consumption and scrap rate, making long-term use more economical.
III. Technical Challenges
Adhesion issue: The hydrophobicity of the plastic surface needs to be improved through resin modification (such as acrylic lotion) to enhance adhesion.
Drying requirements: Water has high heat of vaporization, requiring the use of hot-air drying equipment. Additionally, high humidity environments may affect the drying efficiency.
Glossiness: Traditional solvent-based inks have higher color saturation, while water-based inks require formulation optimization to enhance their expressiveness.
IV. Development Trends
With the tightening of environmental protection policies and technological advancements (such as the development of low surface tension resins), the proportion of water-based inks in plastic film printing will continue to increase, especially in high-end fields such as food packaging and children’s toys.