Discussion on Application of Varnishing Technology in Printed Products

Summary

In view of the extensive use of glazing technology in print products currently on the market, there is a desire to understand the type of glazing technology and the effect of using glazing, and what conditions are required for printing products to be glazing. There are a large number of glazing techniques used in various magazine books on the market today. They just want to use glazing in order to increase their added value to get consumers' attention, and thus obtain higher purchase rates. At this point in the coming 21st century, people generally pay attention to their appearance packaging, the so-called texture. Moreover, due to the rising awareness of environmental protection, the impact on the environment after glazing even more attention. Therefore, the methods of applying glazing for print products and the ways in which they should be applied are the best, and can significantly increase the added value of printed materials without affecting the environment; and the psychological analysis of consumers is the focus of this paper.

Preface

Since the invention of printing technology, people have used print to convey and disseminate the ideas of words; thus, the inheritance and continuation of knowledge have been formed. Since then, printing has been closely intertwined with the lives of human beings. Until recently, the industrial revolution started and the capitalist business era began. The purpose of printing is no longer to convey knowledge; it contains the dissemination of information; among them, there are commercial, sports, entertainment, news, and so on. Planar media is the new symbol of the printing industry. It represents the era of strong commercial hues. The printing methods operated by traditional methods must change the strategy of operation in order to gain a place in the highly competitive environment. Nowadays, Consumers also pay more and more attention to the feeling of appearance quality. In such a market, everyone's attention must be drawn to printing and post-press processing. It is even more important for the human eye to improve their glazing skills. The purpose of this article is to discuss how printed printed matter can be used to increase the added value of printed materials by using post-press finishing glazing. How glazing can be used to guide consumers' attention and stimulate attention to consumer behavior through attention concerns can create more Big profit space.

The definition and purpose of enamel and glazing

First, the definition of polishing

Polishing belongs to the binding processing part of the entire printing process. It coats the surface of printed matter with resin, wax, or lacquer to form a film surface on the surface of the print. Therefore, it is also called "glazing". Or known as "gloss processing", with the change in the definition of materials, the definition of glazing has also changed, not only glossy processing, as long as the printed material is coated with a transparent light paint, the oil paint after drying is shiny, Later, this law was used to print processing or to guide the printing of the source. As the creative needs of art designers and the improvement of glazing processing technology are constantly improved, the methods and styles of glazing are also diversified. Observe the local stereoscopic use of cultural publications that are popular in China for the purpose of expressing three-dimensional textures. Light, processed finished products exhibit dazzling special stereoscopic effects. The film surface can no longer be a single material, and can be obtained by compounding different kinds of glazing materials, such as light glazing, PP glazing, UV glazing, water glazing, etc. It can be seen that glazing is only The surface of the printed matter is coated with a resin, a film, or the like to form a film surface, but the film surface will have different changes with the progress of the times. For example, glazing can be used on packaging products, heat-resistance food packaging glazing, and commercial applications such as playing cards.

Second, the purpose of polishing

(1) Increase the added value of goods to make them more beautiful:

Polishing can make the surface of prints appear bright or have a special texture. For example, light on the bright surface can greatly enhance the glossiness of the printed surface, and the light on the matte surface can give people a soft and supple texture. The local gloss can reach the designer to highlight the prints. The theme effects that the surface wants to express, etc., these processed prints are compared with the unglazed prints, they have a sense of texture and high sense of value, and it is thought that the printed products after polishing should be high-priced products. , thereby enhancing its added value, while providing designers with another idea in the design concept expression, design expression.

(B) Increase consumer's attention and stimulate purchase desire:

After the post-processing of the print application glazing technology, the film on the surface makes it glossy. Can attract everyone's attention, become a visual focus, plus the editor of the image text will certainly increase the consumer's attention; thereby stimulating consumers to buy desire.

(c) Protecting the cover and expecting long-term preservation:

Polishing is to coat the surface of the printed matter with a resin, film, or wax to form a film surface. There is a layer of protective film on the print to prevent it from being contaminated, scratched, and increase its abrasion resistance and waterproof capacity. As a result, the film can naturally protect the surface of the printed matter, for example, it can strengthen or enhance the paper tensile strength, rubbing resistance, water resistance, oil resistance, durability, chemical resistance, light resistance, and use of the printed surface to be protected from the outside. Defaced and so on. Therefore, glazing can improve the physical and chemical resistance of the printed surface, strengthen the surface to maintain a certain quality; but it must be noted that the degree of resistance to physical and chemical resistance will vary depending on the material of the light.

(D), with the special use of print or post-processing processing needs:

Some glazing processes are glazing for the purpose of their use, and partial glazing can make prints more three-dimensional, for example, printed wax-printed prints, which have moisture-proof, grease-proof, anti-infiltration, and frost-free, and are not easy to be frosted. Characteristics, so commonly used to package ice cream, cones and other frozen foods. Another example is the polishing of playing cards, which in addition to the basic functions of general glazing, it also has particularly good stiffness and smooth surface effect, and is specially used for playing cards and other glazing processes that require this effect. And some of the glazing methods are for the subsequent processing and polishing, such as heat-sealed colloidal glazing, that is, they are used for "heat-sealing packaged goods", so that they can be used after heating. The outer layer of a soft or rigid package is attached and the product is packaged in between.

The type of enamel and glazing

First, ordinary glazing

Or resin glazing, glazing liquid blended with resin and turpentine can be used for partial or full coating. The production cost is the cheapest of all the glazing processes, with a slight gloss and protection of the printed surface. However, it has low friction resistance and is also known as "Gold Oil". It is more commonly used in the coating of general cans and food packaging labels. It is generally used for prints with low quality requirements, or for the stability of UV glazing, but before the gritting of the surface of the rough paper, so that it will not be caused when it is applied to the official UV. The uneven surface of the paper affects the quality of the final coating.

Second, PVA coating

The use of vinyl alcohol polymer liquid material as the substrate, after the coating is heated and calendered, its friction resistance and protective effect are superior to the former. Some kinds of PVA coating liquids are heated and calendered after being coated to obtain greater gloss and rub resistance, which is one of the more commonly used coating types in China. However, attention must be paid to the problem of yellowing or discoloration of printed materials and paper stretching. Calendered prints also affect accuracy due to temperature control and paper web orientation control. At the same time, since PVA uses formaldehyde as a solvent in large quantities, it not only has a great impact on work safety and human health, it must be used with special care. .

Third, UV coating

It is coated with UV professional glue liquid material on the surface of printing paper, and then cured by UV irradiation. It has higher friction resistance and bright effect. And has the ability of UV resistance, so the ink is not easy to fade. Its application is the most extensive, and production may still be cracked if it is folded at 360 degrees. Therefore, in the UV glazing materials and paper purchase, special attention must be paid to the suitability of silk.

Fourth, playing cards polishing

Or known as bright surface, facade light, coated with a special glue liquid coating, in addition to the basic basic gloss and protect the print screen, waterproof function, but also has a particularly good stiffness, surface smoothness and anti-static effect, can Prevents inconvenience caused by electrostatic attraction. It is a kind of special coating used for playing card, PCC board, PVC board or all kinds of card protection back, and it is also suitable for food packaging applications because the used material does not contain lead poison.

Five, heat sealing glue glaze

The use of heat-sealing colloidal glazing is due to the fact that various thermoformed containers on the market are produced by the use of blister packs and close-packed packs, which are liquids in which acrylic resin is combined. Such as ordinary glazing, coated by oiling machine on the print and dry Serve. Its surface has some slight luster, similar to ordinary glazing, which can be calendered to increase gloss; and can be divided into hard and soft rubber depending on the use. Hard rubber, also known as vacuum glue, is specially used for shell vacuum packaging.

Sixth, wax surface processing

Using wax or synthetic wax as the main coating material, the coating method can be directly coated or heated and melted, and then applied in one-way or two-way coating. The printed paper products after processing have the functions of waterproof, anti-oil stain and seepage prevention, and are not easy to be frosted by general plastic bags. Because wax is non-toxic, it is mostly used in refrigerated food packaging. After the wax is printed, the white wax is dried and then becomes solid. The poor flexibility of the printed product leads to poor impact resistance of the printed product, and the synthetic wax has better flexibility and has a tendency to replace the white wax.

Seventh, screen printing glazing

Screen printing glazing is the use of screen printing to create a medium. It can apply waterborne, oily and UV coatings to screens by means of screen printing. The advantage is that it can be used for partial and full coverage. The control of the thickness of the screen plate and the adjustment of the solid content of the coating oil can be used to control the thickness of the coating film, and diversification of the upper varnish selection can also meet various special requirements, and the object of the coating is not limited. After glazing, the product is extremely excellent regardless of flatness, gloss, etc., and it can be called the surface characteristics of all types of coating glazing. (Source: You Shiming, Zhu Yizhong, 1993 "The Study of Post-printing Upper Light", Huagang Printing and Communications Journal 24)

Eight, PP coating

The solid film polymerized by propylene is used as a substrate, and it is formed by hot pressing and surface-mounting. It has excellent anti-fouling and moisture-proof effects. According to the film surface can be divided into bright and matte, embossed glazing species, bright surface with a bright glass gloss effect; is a higher quality of the glazing production. The surface of the matte surface is specially treated to produce an object-like effect, the surface is soft and non-reflective, and the touch is soft; in print design, it is often used in special expression modes. The third type is embossed, and its surface has a special pattern with a strong sense of stimulation. The gluing film thickness of printed matter has the illusion of special paper, which is a special way of design expression.

Nine, PVC coating

It is made of polyvinyl chloride by hot pressing and is divided into thin and thick depending on the thickness of the film. The thin thickness is about 0.02mm; the surface gum is thick and transparent; the antifouling, moistureproof and abrasion resistance are all quite excellent. It is an early common glazing method, which is cumbersome and time consuming for the production process; the fee is also about twice that of PP glazing; at present, it has been gradually replaced by PP glazing except for special purposes. Thick thickness of 0.1mm, usually with double back protection applications. Its hardness is very strong waterproof and abrasion resistance, the surface of the finished mirror