In recent years, with the continuous development of screen printing technology, its application fields continue to expand. In the field of packaging and anti-counterfeiting with flexo, lithography, and gravure as the main printing methods, it has also gradually opened up the market of screen printing. Screen printing occupies a large number of markets in packaging and printing with its own unique strengths, and is showing a steady growth. Moreover, through combination printing with other printing methods, screen printing has become the main partner of other printing methods combined online, such as the EM series flexographic printing machine mainly used for packaging printing produced by Swiss Jielas Group, of which more than 90% The models are equipped with rotary screen printing unit. Such printed packaging boxes, trademarks, labels, etc. not only highlight the brand characteristics of the packaged goods, but also enhance the anti-counterfeiting function.
If printing transparent material labels or trademarks, it is necessary to print the background color first using screen printing, and then use offset printing or flexo printing to process color logos and patterns. This combination printing method makes the printing effect different from the general label, which can improve the grade of the product. From the trend of market development, this printing method will become more and more popular.
Screen printing has an excellent coverage effect, which can be applied not only to the surface printing of transparent materials, but also to printing gold ink. Silver ink and hot stamping have expanded the role of screen printing in the field of packaging and decoration printing.
The process of screen printing of packaging trademarks can be basically divided into four parts: pre-press design, plate making, screen printing and post-press processing. It is necessary to pay attention to the operation technology of each process to ensure the printing quality.
Packaging is an important means of product protection, anti-counterfeiting, storage and transportation, and publicity. Nowadays, most products are sold through packaging. Packaging is the first appearance impression people leave on products. When consumers buy packaged goods, they often do not look at the intrinsic quality of the goods, but make choices through the information and appearance provided by the packaging. Since most manufacturers do not have the design capabilities of packaging and trademarks, designers and business personnel work closely together to actively help customers design high-tech and novel packaging. Through the creativity and personality of packaging design, they show the novelty and High-quality, high-grade, give full play to the technical expertise, win customers. It is necessary to give full play to the role of design and technology development agencies to achieve the purpose of forming a community of interests with the factory.
At present, many packaging trademark printing manufacturers have their own design and technology development agencies. In the design of packaging trademarks, excellent designers must be familiar with the plate-making and printing processes to be familiar with the post-press processing technology, and to know whether the packaging works they design meet the plate-making and printing processes of Jinan City, and ultimately achieve the purpose of packaging. The design of general packaging trademarks is required to be simple and clear, suitable for printing in China. Qi Fei only cares about maintaining her own design style, and does not consider the difficulty of post-processing, causing unnecessary economic losses to the enterprise. At the same time, due to the difficulty of processing and the relatively poor product technicians, it is also easy to lose the expected effect of the design. For example, for a trademark, the pattern is too close to the size of the finished product, often due to paper deformation, insufficient precision of the die-cutting tool and other factors, the die-cut finished product is skewed, the error is too large, and the product is scrapped. Therefore, on the basis of continuously summing up experience and lessons, enterprises need designers to change the design appropriately to meet the requirements of post-printing process. For some high-end packaging, or products with special design requirements, special personnel must be organized to tackle the problem after printing and use superb technology to meet the requirements of customers and designers. In addition, designers and technology developers should also be good at taking advantage of the characteristics and strengths of the company's technical processes, and actively guide manufacturers to do everything possible to transplant these high-tech content processes to packaging and printing through design. In this way, not only can the added value of packaging and printing be increased, but also the length can be shortened to give full play to the technical expertise and attract more printing business.
The printing process of packaging trademarks is the technical organization of designing manuscripts through plate making, printing, post-processing and other technical means to achieve mass reproduction. Since the printing and use materials of packaging trademarks are completely different from the printing processes of general books and periodicals, etc., in the design of silk-screen printing of packaging trademarks, the characteristics of the materials and printing processes of packaging trademarks must be fully considered.
Printing paper
Since printing of packaging labels for different businesses requires different types and sizes of paper, it is often necessary to reserve dozens of different types and thicknesses of paper. Such as single-sided coated paper, single-sided offset paper, single-sided coated paper cardboard, coated paper, cast coated glass powder cardboard, white paper, gold paper, aluminum foil paper, kraft white paper, etc., the common thickness is 80g , 90g, 250g, 300g, 350g, 400g, 450g, etc.
In addition, for different businesses, there are different requirements for paper and operation technology, such as bottled wine trademarks. Because it is a mechanized labeling, it has a fast speed. After the automatic glue on the back of the sheet is wet, it will deform and bend instantly. The bending direction should be matched with the automatic labeling machine, otherwise production cannot be performed on the automatic assembly line. Therefore, in order to meet the needs of different customers, the paper horizontal and vertical threads must be considered first when they are combined and typeset. The trademark produced by the master does not meet the requirements of the customer's horizontal and vertical threads and the entire batch of products is scrapped.
Fight together
The distinguishing feature of packaging trademark printing differs from that of books and periodicals is that one version, one picture and multiple pictures are combined. At least two pictures, and dozens of pictures. In the end, it is more appropriate to combine several pictures for printing. This is the design and process to consider. Mainly consider from the following aspects.
1. The difficulty of post-press processing. If a manuscript has many processing steps, it must be carefully considered not to make the printed layout too large. Otherwise, due to poor temperature and humidity control in the printing workshop, it is easy to cause the paper to bulge, so that the aluminum stamping and embossing of the next process is difficult to overprint accurately. As a result, the aluminum should be hot stamped and embossed once, but it must be stamped several times as a last resort. In addition, if there are too many joints and the paper is deformed, it will seriously affect the registration and is difficult to remedy.
2. Shaped trademarks. Trademark stickers are generally not very large. For thin-shaped special-shaped trademarks that need to be die-cut, don't put too many joints, otherwise the quality of die-cutting will be affected because of the accuracy of the die-cut version.
3. Number of prints. If the number of prints is not large, do n’t overdo it. Because the layout is too large and the number of prints is very small, the cost of the imitated version is high, which will inevitably increase the cost of the single label.
4. Paper opening number. The size of the packaging paper matches the size of the paper, so the printing paper is very standard and there is no waste. This is not the case with packaging trademarks. Due to the influence of the size of the single label, it is impossible to accurately assemble the eight-fold, four-fold and folio printing. Therefore, whether to adopt a combination method of inserting spelling, horizontal and vertical spelling, nesting spelling, one-knife punching, and drawing knife is based on the principle of saving printing paper as much as possible. Choosing a good process combination method can directly create profits for the enterprise.
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