Talk about Application of Offset Printing Technology in Packaging

The dominance of offset printing in the fields of publishing, printing and commercial printing is still difficult for other printing methods to be shaken. This is not only due to the fact that offset printing technology has a long history, it has developed relatively maturely, production specifications and quality are guaranteed, and workers’ The operating level has also reached a higher average value; more importantly, offset printing products are of high quality and can satisfy the duplication of most products, and the offset printing technology has high flexibility, with medium, long and short editions. Parts are suitable. It is these advantages of offset printing that make offset printing in the field of packaging and printing can fully display their talents.
Offset printing remains popular in the packaging and printing market. Another important factor is the flexible combination of offset printing and other printing methods - offset printing + sheetfed gravure printing, offset printing + screen printing, offset printing, and gold sweeping. By avoiding weaknesses and complementing each other's strengths, even people who love offset printing find more reasons to love it, and they also provide more means for individuals to express their individuality for packers who are keen to pursue new differences.
With the acceleration of people's pace of life and the improvement of living standards, the requirements for the packaging of goods are constantly increasing, new products are emerging in large numbers, and the pace of product renewal is also greatly accelerated. This means that people will have higher and higher requirements for the packaging's exquisiteness and packaging printing quality. The variety of packaging will greatly increase, while the volume will change little or even decrease.
This trend of change requires flexible high-quality printing methods to be adapted. In other words, there is a need in the market for a printing process that has a short production cycle and can print fine color images. For this, offset printing is not only a good choice, but also an inevitable choice on many occasions. Especially in China, offset printing has become very popular. Offset quality has become the default standard for many packaging users and consumers; and offset printing machines have a large amount of possession, and have a very good hardware environment (equipment, consumables, spare parts supply...) And software conditions (technical talent, maintenance, ...). It can be said that whether it is from the use of the seller's resources, or from the buyer's needs, the development of China's packaging and printing market can not be separated from offset. The large number of imported multi-color offset presses in recent years has also confirmed this. According to several large offset press suppliers in the world, most of the multi-colored offset presses introduced in China in recent years are used for packaging printing. Especially in the Pearl River Delta and Yangtze River Delta regions, although many large and medium-sized packaging and printing companies have introduced gravure gravure presses and flexo presses, they still use offset printing as one of their main projects or for printing small and medium-sized batches. Products, or combined with other printing and finishing processes, are used to print quality packaging.
The ability of offsets to reproduce subtle levels of imagery is impressive, especially as the gradient transitions are very soft and smooth, which is unmatched by any other printing method. However, the offset printing ink layer is relatively thin, and there are ink ink balance and ink emulsification problems. Therefore, even if it is printed on two occasions, the ink color is full, uniform, and consistent. In the packaging design, the application of solid color patches and spot colors is very common. Many packaging users usually use four-color printing and spot color printing in order to make their products unique. At the same time, they need to print gold ink and silver ink. Pearlescent or glossy. For such packaging, if pure offset printing is used, the effect of spot colors and printing or printing silver will be greatly reduced. This undoubtedly gave the offset a problem.
In order to make up for the lack of offset printing, in recent years, the combined printing process of single-page gravure printing and offset printing has been highly respected. This combination printing process utilizes the advantages of thick gravure ink layer and stable ink, printing large areas of spot and spot colors, gold and silver, pearl color blocks, and even producing a variety of imitation metal etching effects; the use of offset printing layers with smooth and smooth features Print halftone images and gradient patterns. The two printing methods have complementary advantages and complement each other.
Compared to offset presses, the advantages of the sheet-fed gravure press are:
1. The transfer of pigment is 4 times more than offset printing. The printing ink layer is thick and the ink is bright and full.
2. Non-wet press printing, there is no risk of ghosting, there is no problem with ink balance and ink emulsification.
3. When printing a large area of ​​color patches, there will be no problem of ink color change and no "ghosting" will appear.