Automatic printing is the only way for development

An exquisite package of goods that can arouse people's desire to buy, but also intangible added value of goods. In today's packaging and printing industry, the application of new materials and new technologies is being introduced every month, and people are striving to combine the printing of different technologies so that the packaging prints have more powerful visual impact. Therefore, as the mainstream printing offset printing, combined with the network Edition printing, especially in combination with UV screen printing with special inks, makes the printing effect of packaging and decorating products even more powerful and even more beautiful.

Since 2000, our company began to use offset printing combined with screen printing for cigarette pack printing. In the following years, wine boxes, tea boxes, food health boxes, moon cake boxes, makeup boxes and other paper and plastic packaging have been widely used.

Several common UV screen printing special effects and offset printing printing introduction 1. Screen printing UV local highlight application

This is the most widely used type of screen printing and offset printing. It is commonly used in book covers or back covers, book covers, product catalogs and introductions, product brochure covers, product advertising brochures, posters, packaging software and hard boxes or craft boxes, etc. . UV Partial Varnish is a high-gloss UV transparent oil. On a matte offset print, a UV screen is used to imprint UV light on certain texts and patterns that need to be emphasized to make it partially bright on the surface. Contrast with dumb, and make the print more beautiful and rich. In many cases, the matte film is overlaid on the prints, and the UV highlights are printed on the screen. The dull contrast effect is even more noticeable.

2. Screen printing UV convex oil application

UV convex oil, as its name suggests, is a high-solid UV light oil, and the UV convex oil is printed on the offset printing plate through the thick film screen plate. Its effect is not only the brightness of the UV varnish, but also its unique convexity. Sensation, in the performance of some physical photo effects, such as processing changes applied properly, you can play a very good visual effect, but also can enhance the three-dimensional sense of physical patterns and layering.

3. Application of screen printing UV ice (ie wrinkles)

Screen printing UV ice, also known as wrinkle ink, is a specially formulated UV varnish, which is printed on the offset printing with a screen plate. After UV printing, UV curing and secondary UV irradiation, the surface of UV varnish is visually like ice. The effect is like, so the texture is wrinkled, and the original UV crack effect is also evolved in this effect, the cracks appear larger, more crazily. UV ice flower application is also very wide, generally in the large area of ​​the color of the texture reflect more effective, of course, in the use of a layout, you can design a large area of ​​color and a small area of ​​pattern mix, better reflect the vivid and changeable The effect, such as the application of gold and silver card paper, the effect is more prominent.

4. Screen printing UV frosted application

Screen printing UV matte is also a kind of application of a wider effect, in the offset printing gold and silver cardboard online printing matte effect is more obvious. Visually it is a kind of semi-mute sand effect, which is divided into fine sand, medium sand, and coarse sand. If used well, the effect is very good.

5. Screen Printing UV Snowflake Application

Screen printing UV snowflakes in the past two or three years is very common, especially for high-grade cigarette packets printed on the laser card color printing surface. Its surface is an all-mute, delicate texture. The use of screen-printed UV snowflakes on the glossy offset prints is also very effective. Sometimes the use of screen printing UV snowflake technology on the offset laser paper jam or offset printing of the laser paper jam, the screen will be more vivid.

There are many screen printing UV special effects, such as UV small foam, large foam, crystal diamond, illuminance convex oil, colorful convex oil, water mist, refraction, gold sand, crystal cracks, etc., as long as the design is in place, not only enhance The grade of printed products will also have unexpected visual effects. Moreover, sometimes on the surface of the same offset product, at the same time, a variety of screen printing processes are designed and used, and the cross-application of lamination film (bright film or matte film) such as hot stamping and embossing can make a packaging and decoration print reach beautiful beauty.奂 effect.

Analysis of the Design and Printing Examples of "Qianlong Imperial Wine" Wine Box

The decorating design that we understand is that the designer expresses patterns, colors, contrasts, etc. on the packaging and decorating products, and can accurately and vividly express the theme, such as various styles such as elegance, stability, liveliness, dynamism, and simplicity. As long as designers can use their creativity and inspiration to achieve the purpose of the manufacturers on it. However, what we need to do now is offset printing and decorating products with screen printing. In addition to the above-mentioned design requirements, we must also include the design and application techniques of screen printing. Designers must first have a good understanding of the characteristics of various screen printing inks, especially for a variety of UV special screen printing inks, such as UV partial varnish, ice flower, wrinkles, large cracks, crystal diamonds, snowflakes, water mist The visual effects of the foaming, foaming, condensing, magic, colorful, etc., including texture expression conditions, are all well known, so that the design can be more vivid and vivid on the theme of expressing the packaging. The color is more perfect and more shocking. Force and visual impact. At the same time, designers are better equipped with more comprehensive printing knowledge, including offset printing and screen printing and other comprehensive knowledge as described above, so that works designed to better represent the characteristics of the product.

The "Qianlong Yujiu" box printed by our company won the Gold Award in the 12th Gold Medal Award in the Henghui Cup in 2005. Now, the design of the wine box is taken as an example for analysis. The brand of wine is "Qianlong imperial liquor," and the description also states that "Qianlong imperial liquor - China's royal health wine, Qianlong imperial liquor is the best in the Qing Dynasty wine ...". Therefore, this wine box embodies the theme of the royal treasures of wine, using yellow as the main color (the emperors of ancient Chinese clothes are embodied in yellow robes), the main body is also reflected in the shape and color of the Palace of the Palace plaque, classical patterns The dark gold border, Beijing Jingtai blue ground, the eye-catching "Qianlong imperial wine" four-word glittering, the back of Emperor Qianlong Royal Group's "very good, foot life is also" dazzling, box surface yellow tone with looming visible Shadow of "dragon" pattern. The base of the dark golden dragon, the color patchwork, but also inseparable from the overall tone of the yellow tone, the feeling of the entire classical court will come out.

The comprehensive application techniques of offset printing, screen printing and embossing are the key to express the creativity and characteristics of packaging and decorating printed matter. “Qianlong Yujiu” box printing technology, how do we use offset printing, screen printing, embossing, etc. to comprehensively use, interlace and superimpose, and a good expression of the theme of the wine itself, the creativity and characteristics?

The first thing to consider is that the subject color, yellow, must be expressed distinctively, especially the feeling of the ancient emperor Huanglongpao, which shows a sense of silk. Therefore, we chose to use 250 g silver cardboard as the substrate. The first procedure was to print with screen printing yellow 70% and screen printing white 30%. The second procedure is to use Pan-Gold Pearl Powder 70% Gardish Flash Gold 30% mixed and adjusted to varnish, still printing with yellow screen printing plate in the same version, after the middle yellow dry, print in the same position, so that the main Yellow produces a satin and sparkling effect. The third is the screen printing white, that is, the white background of the Samurai logo, the bar code on the white background and so on. The fourth lane is four-color offset printing, namely the Samurai logo, plaque frame, and four black explanatory texts. The fifth is screen printing special red, that is, bold text including the top of the box "The Emperor's treasure" seal. The sixth is screen printing special blue, imitating the blue base of the Forbidden City plaque. The seventh lane is covered with polyester film. The eighth is the pattern printed on the blue plaque with a UV refraction pattern, including the border “dragon”. The "Dragon" pattern on the yellow bottom flashes. The ninth is the theme word, trademark (samurai), including the top of the box, "the emperor's treasure" and other pressure convex. The tenth pass is die-cutting, so that the entire box labeling process is completed. To sum up, the processing color sequence: screen printing yellow -> screen printing flash -> screen printing white -> offset four-color -> screen printing red -> screen printing special blue -> cover polyester film -> screen printing UV Refractive -> embossing -> die cutting a total of 10 processes. The box base is processed by another plate, four-color offset printing and die-cutting die-cutting are completed, and finally the entire wine box is finished by hand-manufacturing. The whole production process of the whole wine box has an overall meticulous planning and creative considerations from the design, selection of substrates, to printing (including offset printing, screen printing), so if the designer I talked about in the first place does not With a thorough and profound understanding of offset printing, screen printing, including lamination, embossing and other processes, it is impossible to design and produce a packaging and decorating print that is creative and visually appealing in color and process.

Prepress application skills

As we all know, each piece of printed matter must be printed before the design of the main body through the computer color separation, discoloration processed into a negative film, and then plate making and printing, especially offset printing and screen printing negative film production processing is different, offset printing film is positive Anti-words, many times in order to better visual effects may not only be four-tone tone, there are some to use spot colors, and screen printing is more the use of spot colors. Of course, sometimes for the design needs, screen printing on certain specific patterns, there are also used the combination of dot tone and solid color, as well as screen printing and refraction, must use special files for production. In the combination of offset printing and screen printing, there are many craftsmanship techniques. For example, when the two are combined for printing, the line diameter of the offset printing “10” code is generally 5μm, and the “10” code alignment of screen printing is If the line is not published with a 5 μm diameter, it must be changed to (15 to 20) μm, and the bite edge and pull edge must be the same as the offset, otherwise it will not be accurate. Many packaging and decoration prints must be covered with a matt film or film (printed on a matte or glossy surface depending on the design needs), and the tension of the corona layer on the surface of the matte film or film must be covered. Above 42 dyne, UV screen printing can be performed on the film surface to achieve the best adhesion.

Offset and coated printing paper, especially thin paper (80 ~ 127) g, after the film is covered, the width of the folio will generally be shortened (1 ~ 3) mm, and the length will be shortened (0.5 ~ 2) mm . In the wet rainy season, the coated paper may also stretch. Therefore, according to the situation of the weather, with the prepared film proofreading, the vertical and horizontal lengths of the film are readjusted according to the horizontal and vertical errors of the “10” code. At present, there are a lot of UV offset printing on the surface after the UV light without the use of coating film, after the combination of screen printing, the effect is better.

Another case is the technique of screen printing and offset printing on transparent sheets (PVC, PET) or sandpaper (PE). PVC, PET sheet with electrostatic serious can not be high-speed printing, need to be carried out in addition to static electricity, such as the use of screen printing semi-automatic flat sheeting machine is better. The PP scrub sheet has very little static electricity and is suitable for high speed printing. However, the thickness of the sheet should be within 60 μm. General transparent film or frosted film (translucent) are printed in India, so the color sequence should be the opposite of surface printing. Such as the design of some special effects combined with screen printing on the surface of the sheet, that is printed in combination with printing, you can more vividly express the theme of the printed matter. However, we must pay attention to printing, such as the printing pattern is positive pull gauges, then the direction of the bite when the direction of printing the same, but the pull gauge must use anti-pull gauge in order to accurately align. In the printing of plastic sheets, there is generally no deformation and stretching of the sheet, and it is not necessary to consider the degree of transparency of the “10” code of the sheet itself. On the right, the legend of the "Floral and Snowy Moon" cake box is a double-sided screen printing of 25 μm thick transparent PET sheet. He was awarded the Gold Medal in the 11th Henghui Cup Gold Net Award in 2003, and the Silver Medal in the 2003 Asia-Pacific Screenprint Boutique Exhibition.

In offset and screen printing packaging and decorating printed materials, especially in hardcover books and magazines, the most used is the offset printed film on the matte film, and then on the matte film UV screen printed with local light, through a partial theme pattern mute The contrast increases its visual effects. Of course, there are also dumb oils on the glossy film, which also can achieve the visual effect of muted contrast. Skills in process application must be continuously explored and improved in practice. In actual operation, due to the slow speed of screen printing and the high cost of ink, each designer and screen printer should try their best to express the best visual effects with the least amount of screen printing. For some of the additional value is relatively high, but must have a variety of special effects are mixed in order to vivid performance of the print, otherwise another matter.

In the case of offset printing with complex screen printing, it is necessary to have a real sample program. Through proofing, defects can be better identified, deviations can be adjusted, color sequence and effects can be corrected, errors can be corrected, and the like can be made more perfect.

The improvement of technology and craftsmanship is endless. Only by continuously improving and improving one's own level in tireless exploration and research can we create more contemporary and progressive ideas. These are some of my experiences in offset printing combined with screen printing in the past ten years. I hope that I can play a role in attracting you for discussion and discussion with everyone.

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