Printing ink color allocation

As for the printing ink color allocation, it is incorrect to just talk about scientific theories without paying attention to the technical skills. For example, when the two colors are mixed, the chlorine monoxide generated under a certain temperature condition exceeds the standard and is discarded. This has become one of the technical barriers on the aluminum foil packaging of pharmaceutical companies. In view of this, we will combine the practical experience to talk about the basic knowledge of packaging printing ink color and color, for the reference of the printing industry and ink industry colleagues.

1. The general meaning of ink color chromology

In the final analysis, the color of printing inks in printing is inseparable from physics, physiology and psychology. Simply speaking, the colors that people have long studied are often dominated by psychological feelings. Once the packaging printing ink is printed on the surface of the substrate, it can not only improve the performance of the substrate, but also give the product various colors. The color of the printing ink depends on the choice and composition of the pigment. For a long time, people have developed new ink color varieties and improved the quality of traditional color hue for the needs of products and product packaging.

As we all know, the color of the printing ink on the surface of the substrate is often restricted by its own chromaticity. If it is green, red, white, etc. under a standard light source, but if the ambient light or irradiation conditions change, such as red light incident on the white ink ink film, the white packaging printing ink will show red. The ink film printed under different ambient light or different lighting conditions will show different effects.

The surface of any kind of substrate is full of colors and it is not obvious at a glance. As a packaging and printing worker or a printing ink researcher, in order to fully reflect the benefits of printing ink color, on the basis of knowledge of color chromatics, we should continue to study the artistic conception of ink ink film color changes to guide the operation of ink color printing And ink manufacturing.

Second, the concept of printing and decorating the same color spectrum

To meet the needs of packaging printing ink color varieties, it is not enough to rely on a few existing colors. The finished color inks on the market basically require serialization, which must be obtained after a certain color matching process. Once the inter-color or multi-color is printed, a new color hue is obtained, then this is in accordance with the normal packaging printing law and the color matching law.

In order to achieve the above requirements, people have proposed the concept of metamerism colors. Through people's long-term practice, it has been found that the concept of metamerism is only useful for specific standard observers, but it is not applicable to color-blind people. Metamerism means that the tristimulus value of the ink color is the same, and the distribution of the spectrum is different. This is very important for the color matching of color packaging printing inks.

That is, different inks can be used to formulate the same ink color variety.

However, in actual color matching, we can only achieve a certain degree of approximation, and can be evaluated by the shape of the spectral reflectance factor curve of the sample. From a qualitative point of view, the closer the reflectance factor curves of the two samples are, the more overlapping, the intersection point The more it is, the more it can be proved that the color hue prepared is close to the sample. If it is analyzed and evaluated from a quantitative point of view, the difference between the two ink samples can be calculated and the difference between them can indicate the degree of their metamerism.

For designers of packaging and printing colors or packaging and printing ink formulations, if color matching is used during color matching and the reflectance factor curve is used to determine qualitative properties, it can be quantified by the color difference value (â–³ E). analysis.

3. Basic knowledge of color blending

In the packaging printing ink system, the connecting material is a colorless or slightly colored plastic liquid. The refractive index of the connecting material is very close to that of water, so the connecting material has a certain transparency. When the color and filler are added, a series of optical changes will occur due to the blocking of light by the color and filler, and then reflected, resulting in printing Changes in optical properties of ink film.

For example, through a large number of experimental comparisons and related data, when sunlight enters the yellow color printing ink film, it means that it absorbs the blue spectrum of sunlight and emits yellow and green light. When the reflected yellow light and green light meet the blue pigment particles again, they often absorb the reflected blue light and leave only the green light. Therefore, after a series of reflections and refractions, only the green ink ink film is reflected. Therefore, we call this mixing of printing ink colors subtractive mixing (absorption of the wavelengths required by each other without being reflected by the absorbed spectrum. This is the origin of mixed colors (or complex colors).

In China's packaging and printing ink industry, due to the principle of subtraction, the complementary colors of the three primary colors are used-that is, the subtractive three primary colors (red's complementary color is cyan, green's complementary color is magenta, and blue's complementary color is yellow). The three subtractive primary colors magenta, cyan, and yellow overlap to form black (under high-density huang), and various mixed colors are formed when the density of the three changes.

In order to avoid conceptual confusion, the three primary colors of addition in nature are red, green, and blue. Therefore, the three primary colors of packaging printing ink cannot be simplified to red, yellow, and blue. In a word, red is not equal to magenta, and blue is not equal to cyan, which are different concepts of the three primary colors of subtraction and addition.

Using various shades of printing ink colors to compound many colorful inks. Due to the variety of packaging and printing colors, especially under the same environmental conditions, it is impossible to use only one ink color that feels dull and dull. This principle of reduction is what we should understand and master in the packaging and printing industry and the printing ink industry. Basic knowledge.

If the colors of the packaging and decoration design are fully conceived, from the three primary colors of yellow, magenta, and cyan to the three-color red, green, and blue to the four-color purple, bronze, olive green, and black, they can be combined Into another new form of expression.

As people already know, if different ink color (hue), different ink brightness and different ink color saturation are mixed together, it will also give people a sense of beauty and harmony. The rhythm of packaging printing ink color also has its most basic rules, such as the difference between warm and cold colors, that is, the cool colors are green, blue, blue, and purple, and the warm colors are red, orange, and yellow. In addition to warm and cool colors, there are neutral colors of light purple, light gray and so on. Another example is that different printing ink color tones will give people different feelings, and will describe people's different moods with various printing ink color hue.

For example, white ink symbolizes purity, simplicity, red ink is festive, passionate, and justice, yellow ink makes people excited, cyan ink often reflects tranquility, blue ink reflects peace and stability, black ink appears solemn, and green ink is often energetic And gentle symbol.

Throughout the color selection of packaging and printing ink color cards at home and abroad, in addition to the three primary colors, the vast majority are composite colors. The deployment of multiple (combined) colors is itself a color science, and the final packaging and printing colors are still subject to human visual inspection to verify their effects. But the starting point is inseparable from printing ink colorology, especially color aesthetics. Therefore, the choice of packaging printing color must be closely combined with the environment.

Whether warm colors give people a sense of expansion, enthusiasm, and psychological balance, or cold colors give people the feeling of contraction, elegance, softness, solemnity, and psychological calmness, it is impossible for human beings to be in the same strong atmosphere all the time Certain adjustment. For example, a strong color environment can make people tired or irritable, and it can make people feel dull in a dark environment.

It is the use of packaging and printing decoration colors to decorate the dazzling colors of products that people need and constantly adjust work, life and environment, which will give people a benign stimulation and help improve the quality of work and life.

The packaging and decoration of the same product often have several colors coexisting, so the coordination between colors is always an issue that we can't study. For example, complementary (red and green) colors (the addition of two colors equals white), sometimes a bad match will give people a tacky feeling, and a good mix will make people feel strong and eye-catching.

Another example is light yellow with reddish brown, often due to the close color between yellow and red, similar tones can give people a harmonious beauty. There is also a combination of dark green and light green, the color is fresh and not dazzling. In recent years, people have adopted the method of matching achromatic and light colors at the same time, giving people a crisp feeling and protecting their eyesight. The three colors of red, white, and blue appear on a package when they are the same. It gives people the warmth of red, the purity of white, and the solemnity of blue, reflecting the extraordinary beauty.

As a designer of packaging printing and printing ink, it should not be limited to the existing ink color card and hue range. It can often be combined with the use of Munsell color map, Chinese color system physical album and electronic computer color matching to gradually satisfy users. More and more requirements.

4. Face up to the failures and communication methods in printing operations

In addition to the color science of packaging printing ink colors, as a decoration designer, especially printing operators and formulators of printing inks, should carefully study and analyze the ink failures (such as flying ink, sticky dirt and rubbing dirt) in the packaging and printing process. , Quality, vitrification, mirroring, powdering, off roller, ink, paste, translucent, ghosting, smearing, beard, translucent, black pile, flowering, floating and dirty, phantom, speck , Poor gloss, drying too fast or too slow, fading, discoloration, discoloration, excessive chlorine monoxide, weak color, scratches, seepage, precipitation, adhesion (page), etc.) to effectively prevent and eliminate, otherwise better The vocabulary is unlikely to arouse the interest of the packaging and printing industry, especially consumers.

Conclusion

With the continuous competition in packaging, printing and ink industry, a group of powerful domestic enterprises have stood out. The production technology and product quality, especially the design and printing technology of the decoration color have reached or even surpassed the world famous brands. Give consumers a clearer understanding and provide better services for them. The new feeling is simple, fast, accurate, bright, and pleasing to the eye. At the same time, it will also bring more practical benefits to consumers.

Mesh Fabric Banner is 120 g polyester fabric banners . It is very soft and light like flags` material . The printing tech for this material is digital printing and silk screen printing.

Printed Fabric Mesh Banner Specifications

Mesh Banners are custom printed at 1440dpi on 1 side or double sided  fabric mesh banner. UV Inks provide bright vivid colors that last up to 5 year outdoors.

Specification :

FAQ

1. How to pack the fabric mesh banner ?

----- Folding with opp bag and outer carton.

 2. A: How to send the very large file to print ?

   B: To use "yousendit " or "dropbox " or "wetransfer"  or CD card or UBS or online.

3. A: How to make the order ?

   B: we will send you the PI for your confirmation before making the order

4. A: How to make the color right ?

    B: If clients are strict on the color ,please send us the printed sample in hand ,or tell us the Pantone Number for each color.

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