Paper packaging printing technology

In the production process of paper packaging, printing technology is a key link in endowing packaging with unique visual effects and brand communication capabilities. With the continuous development of technology, paper packaging printing technology is becoming increasingly diverse. Below is a detailed introduction for you.
Offset printing technology
Offset printing is currently one of the most widely used technologies in paper packaging printing. Its working principle is to transfer the ink to the rubber blanket through the different adsorption properties of the graphic and non graphic parts on the printing plate, and then transfer it to the surface of the paper from the rubber blanket. The advantage of offset printing lies in its ability to achieve high-precision printing, with bright colors and rich layers in the printed patterns, and excellent restoration ability for delicate images and text. For example, when packaging high-end cosmetics and electronic products, offset printing can clearly present the exquisite patterns and brand logos of the products, enhancing the product’s sense of grade. Moreover, offset printing has a fast printing speed and is suitable for large-scale mass production, which can meet the market’s high demand for paper packaging.
Flexographic technology
Flexographic printing technology uses a flexographic plate as the printing plate, and evenly transfers ink to the printing plate through a mesh roller, and then transfers it to the surface of the paper. This printing technology has the characteristics of environmental protection and low cost. Most of the ink used in flexographic printing is water-based ink, which has less environmental pollution compared to traditional ink. At the same time, the production cost of flexographic printing is relatively low, the plate making cycle is short, and it is suitable for some paper packaging printing needs that are sensitive to cost and do not have particularly large printing batches. For example, in the field of food packaging, flexographic printing not only meets the basic printing requirements of packaging, but also conforms to the safety standards of food packaging due to its environmental characteristics. Flexographic printing performs well in printing solid color blocks and lines, presenting clear and full effects.
Gravure printing technology
Gravure printing is the process of filling ink into the concave areas on the surface of a printing plate, and then transferring the ink onto the paper through pressure. The characteristics of gravure printing are thick ink layer, bright colors, strong three-dimensional sense and glossiness. In some paper packaging that requires high visual impact, such as cigarette packaging, high-end gift packaging, etc., gravure printing technology has been widely used. The gravure printing plate has high printing resistance and can be used for long-term and large-scale printing to ensure the stability of printing quality. However, the plate making cost of gravure printing is relatively high, and it requires strict operating techniques. Therefore, when choosing gravure printing technology, it is necessary to comprehensively consider the positioning of the product and the number of prints.
Digital Printing Technology
With the advent of the digital age, digital printing technology is gradually emerging in the field of paper packaging. Digital printing does not require plate making and directly transfers digital files to printing equipment for printing. This makes the printing process more flexible and enables personalized customized printing. For example, some companies can print different patterns, text, barcodes, and other information on paper packaging according to the needs of different customers. Digital printing is also suitable for small batch and multi variety printing needs, greatly shortening the printing cycle and reducing inventory costs. For some emerging brands or product packaging that requires market testing, digital printing provides a convenient and efficient solution.
Special printing process
Hot stamping/silver stamping process

Metal foil is transferred to the surface of paper through hot pressing, forming a golden or silver decorative effect. The hot stamping/silver stamping process can significantly enhance the luxury and texture of packaging, and is commonly used for packaging high-end products such as alcohol, jewelry, etc., making the products more attractive on the shelves.
UV printing process

Using ultraviolet radiation to instantly cure the ink, forming a high gloss and wear-resistant printing effect. UV printing can print a high gloss surface on the packaging to contrast with other parts, highlight the key information or patterns of the product, and enhance visual impact. For example, UV printing technology is often used on book covers and cosmetics packaging to enhance the aesthetics of the packaging.
Embossing process

By applying pressure, uneven textures such as leather, cloth, wood grain, etc. are formed on the surface of the paper. The embossing process not only increases the tactile sensation of the packaging, but also creates a unique visual effect, enhancing the added value of the product. In some high-end gift boxes and stationery packaging, embossing technology is widely used to give the packaging a unique texture.
There are various types of paper packaging printing technologies, each with its unique advantages and applicable scenarios. When choosing printing technology, enterprises need to comprehensively consider multiple factors such as product positioning, cost budget, printing quantity, and design requirements to achieve the best packaging printing effect.