Differences Between Gravure Ink and Screen Printing Ink
Differences Between Gravure Ink and Screen Printing Ink
Gravure ink and screen printing ink are two completely different types of ink, and their differences stem from their fundamentally distinct printing principles.
Simply put, the core difference lies in the ink transfer method and the required physical properties. Gravure ink is a low-viscosity liquid that is “scraped out,” while screen printing ink is a high-viscosity paste that is “scraped across.”
Below is a detailed comparison from multiple dimensions.
I. Core Difference Comparison Table
Characteristic | Gravure Ink | Screen Printing Ink |
Printing Principle | The image areas on the printing plate are recessed cells (engraved or etched). Ink fills these cells, a doctor blade removes ink from the non-image areas, and pressure transfers the ink from the cells onto the substrate. | The printing plate is a mesh screen stretched on a frame, with image areas having open mesh. Ink is placed on the screen and forced through the open mesh onto the substrate by the squeezing action of a flood bar and squeegee. |
Ink Viscosity | Very low viscosity, similar to a thin liquid. Good flowability is required for rapid filling and emptying of cells. | Very high viscosity, paste-like or thick consistency. It should not flow freely to prevent spreading during the mesh opening transfer. |
Ink Drying Method | Primarily relies on solvent evaporation. Solvent-based gravure inks dry quickly via heated air; water-based gravure inks dry via water evaporation. Drying speed is extremely fast. | Diverse drying methods, including: • Oxidation polymerization (reacts with air at room temperature) • UV curing (instant curing upon UV exposure) • Evaporation drying (for some solvent-based screen inks) • Heat curing (requires heating) |
Ink Film Thickness | Very thin, typically only a few micrometers. Prints are fine, delicate, and have strong gradation. | Very thick, can reach 10-100 micrometers or even thicker. Colors are full-bodied, with excellent opacity and a three-dimensional feel. |
Printing Speed | Extremely fast. Suitable for high-speed continuous printing (e.g., packaging presses running at hundreds of meters per minute). | Relatively slow. An intermittent printing process; each color requires a separate squeegee stroke. |
Substrate Range | Relatively narrow. Primarily used for smooth, continuous web materials like plastic films (food packaging bags), paper, aluminum foil, etc. | Extremely wide. Almost “anything can be printed,” including plastics, metals, glass, ceramics, wood, textiles, irregular surfaces, etc. |
Printing Plate | High cost, complex plate making. Typically steel or copper cylinders made via electronic or laser engraving; good durability. | Low cost, simple plate making. Made from mesh (nylon, polyester, stainless steel) and photosensitive emulsion; suitable for short runs and varied production. |
Print Effect | Fine dots, rich gradation, suitable for mass reproduction of continuous tone images. | Vibrant colors, strong opacity, three-dimensional ink layer, but not ideal for fine-line four-color process printing. |
Main Application Areas | High-volume commercial printing: Food packaging bags, cigarette packaging, wallpaper, wood grain paper, magazines, etc. | Specialty printing: Electronic product panels (e.g., mobile phone keypads), T-shirt printing, glass bottles, billboards, printed circuit boards, etc. |
II. Detailed Explanation and Analysis
1. Understanding the Fundamental Difference from the Printing Principle
● Gravure printing is like “stamping”: The plate cylinder acts like a fine “stamp.” A precise amount of ink is held in the recessed cells and “stamped” onto the substrate under pressure. This requires the ink to have good flowability (low viscosity) to quickly fill and empty the cells.
● Screen printing is like “stenciling”: The screen acts like a “stencil.” Ink is placed on top, and as the squeegee is drawn across, the ink is forced (“leaked”) through the open mesh areas. This requires the ink to be sufficiently thick (high viscosity); otherwise, it would flow through the mesh on its own, causing blurred patterns.
2. Visual and Tactile Differences from Ink Film Thickness
● This is the most intuitive difference:Run your fingernail across a glossy plastic packaging bag (gravure printing); the surface feels smooth.
● Run your fingernail across a pattern on a T-shirt (screen printing) or a logo on a mobile phone; you can clearly feel the raised, thick ink layer. This three-dimensional feel is a major characteristic of screen printing.
3. How to Choose? – The Application Scenario Decides Everything
● When you need to print millions of identical food packaging bags at high speed, in large volume, and at low cost, gravure printing is the only choice. Its high efficiency and precision are unmatched by screen printing.
● When you want to print a vibrant pattern on an irregularly shaped water cup, a cotton T-shirt, or a thick metal plate, screen printing is the ideal choice. Its adaptability and excellent opacity cannot be achieved by gravure printing.
III. Summary
Characteristic | Gravure Ink | Screen Printing Ink |
Core Image | Fine, high-speed, large volume | Versatile, thick, three-dimensional |
Key Memory Points | Low viscosity, thin ink layer, fast drying, high-speed rotary printing | High viscosity, thick ink layer, diverse drying methods, squeegee-applied through mesh |
The key to understanding their differences lies in understanding the underlying printing principles. These two technologies have no inherent superiority or inferiority; they simply play irreplaceable roles in different application fields.