Although not really a household name, gravure printing is one of the most widely used print techniques for high volume printing. Gift wrapping, magazines, wallpaper and packaging are all created using rotogravure printing.
Gravure printing or rotogravure is an intaglio printing process that uses rotary printing capable of producing continuous tone images.
Large copper plated steel cylinders are engraved with the chosen design using a laser or diamond tipped stylus. The engravings are referred to as &#;cells&#; and are etched in differing depths, with deeper cells providing more intense the colour.
A different cylinder is required for every colour used. The cylinders are then submerged partially in the ink fountain that on rotation fills the recessed cells. A blade wipes excess ink from the surface of the cylinder before the ink is transferred from the cells onto the printing material.
For even coverage, the printing material is fed between the impression cylinder and gravure cylinder. The material is effectively sandwiched with force to push the ink out of the cells to give the best finish. The print material is then dried before proceeding to the next colour cylinder.
Gravure printing is widely regarded as the best print process for flexible packaging formats such as stand up pouches and quad seal bags and flat bottom bags, due to the fantastic and consistent print quality.
It is a decision for your business to decide whether investing in quality is worthwhile. In the wise words of Sir Henry Royce, &#;Quality is remembered long after the price is forgotten &#;&#; here at Law Print we couldn&#;t agree more.
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According to Focus Label Machinery, choosing the right printing method for your flexible packaging is crucial to achieve the visually appealing and high-quality results that your customer requires. Among the various options available, gravure printing stands out as a preferred choice for many packaging applications.
Flexible packaging is lightweight, customisable and environmentally friendly, making it the preferred choice for manufacturers and consumers alike. Flexible packaging solutions play a crucial role in various industries, offering a convenient and cost-effective way to protect and preserve products and ensure their freshness and quality.
What Is Gravure Printing And What Is Involved In The Printing Process?
Gravure printing uses a cylindrical printing plate that is engraved with tiny cells or dots. The plate is inked, and then the excess ink is wiped off the surface, leaving ink only in the cells. The substrate, usually a smooth surface such as plastic film, is pressed against the cylinder, and the ink is transferred from the cells to the substrate under pressure.
To create intricate details or shading in the printed image, the size and depth of the cells can be precisely controlled, which is particularly beneficial for packaging that requires fine graphics, sharp text, and lifelike images. Gravure printing can capture the smallest details and reproduce them faithfully, ensuring a visually striking final product.
However, these specialist engraved cylinders are expensive to produce, so quantity is an important factor in choosing gravure. Typical applications are snack foods, alcohol, drinks, tobacco packing, tablet blister packaging and pharma products
With many different printing methods available, choosing the one that suits your needs most thoroughly can be challenging, so it&#;s wise to understand the differences between, for example, flexo and gravure printing. So, what are the advantages, and limitations, of gravure printing?
Versatility: Gravure printing can accommodate a wide range of inks, including solvents, metallic, and fluorescent inks. By leveraging these ink options, the visual impact of the printed graphics can be enhanced to make the packaging stand out. The ability to use different ink formulations adds a layer of creativity and customisation to the packaging design process that isn&#;t available with some printing methods.
Registration accuracy: gravure printing delivers exceptional registration accuracy, the precise alignment of different colours on the printed image. This results in clean and sharp graphics which are beneficial for complex designs that require multiple colours or intricate patterns. Also, it ensures that each colour is perfectly aligned to create an aesthetically-pleasing and professional package.
Suitability: gravure printing is well-suited for printing on substrates with smooth surfaces, such as plastic films, which allow for excellent ink transfer and deliver crisp and vibrant prints. This makes gravure printing an ideal choice for flexible packaging commonly used in the food, pharmaceutical, and consumer goods industries.
However, it&#;s worth noting that gravure printing has its limitations. One factor to consider is the cost of gravure cylinders, which restricts its use to high-volume print runs. This makes it more suitable for large-scale packaging projects, such as those found in the packaging, medical, and tobacco industries. For smaller-scale or customised packaging runs, alternative printing methods may be more cost-efficient.
FOCUS LABEL MACHINERY
https://www.focuslabel.com
The company is the world’s best Gravure Cylinder Making Machine supplier. We are your one-stop shop for all needs. Our staff are highly-specialized and will help you find the product you need.