Printing process for children's books

The cover process usually has processes such as UV, drumming, frosting, gold stamping, and cutting.

UV is to make the UV part bright. It feels slightly raised, but it cannot be seen. UV is mainly to increase the brightness of the product and protect the surface of the product. It has high hardness, corrosion resistance and friction, and it is not easy to scratch. Some laminated products are now changed to UV, which can meet environmental protection requirements. But UV products are not easy to bond. It can only be solved by partial UV or grinding. 

Gold stamping, also known as "hot stamping". It is to heat the metal printing plate, apply foil, and emboss golden texts or patterns on the printed matter. With the rapid development of hot stamping foil and packaging industry, the application of anodized aluminum hot stamping is becoming more and more extensive. Gold stamping can make the pattern clear and beautiful. The color is bright and eye-catching, wear-resistant and weather-resistant. The most typical gold stamping is the gold lettering on the hardcover book. It can be ironed in a variety of colors. For example, Korean popular novels are often ironed in blue gold and blue. There is also laser gold, which has a laser refraction effect.

Matte printing is to print a layer of transparent UV frosted ink on the substrate with mirror gloss, and form a rough surface like frosted glass after UV curing. Most of them use screen printing. Because the pattern obtained by this kind of printing is very similar to the effect of metal corrosion, it has a special rough feeling, so it is also called imitation metal etching printing.

Drumming refers to the use of a die-cutting machine to create a convex/concave effect, so that the characters (or patterns) are raised.

Cutting is like carving or paper-cutting, making shapes on paper. 

There are also colorful UVs, which are similar to the colorful powder effect of the previous New Year's cards.

Book surface finishing process

1. UV glazing

UV (Ultraviolet) glazing process is also called ultraviolet curing glazing. UV varnish is a new material that emerged in the 1980s. The glazing technology can enhance the appearance of printed matter and make the color more vivid and bright. And it can also improve the performance of printed matter and enhance the protection performance of printed matter. UV glazing is divided into two types: full-surface light and partial glazing. There are two types of UV glazing: high-gloss type and matte type. The quality of UV glazing is quite high, especially partial UV glazing, which can produce wonderful artistic effects through the contrast of high gloss and matte pictures. At the same time, it is solidified by ultraviolet radiation, so there is no waste gas and pollution.

Partial UV glazing combined with other processes can also produce effects such as ice flowers, foaming, wrinkles, frosting, refraction, and pearlescent. Since partial UV glazing appeared in the post-press processing of books a few years ago, it set off a climax in 2003 and 2004, and was widely used by publishing houses in the cover binding of books, especially for children's, finance and economics, literature, management, graphic books.

2. Lamination

The lamination is a transparent plastic film that is adhered to the surface of the book cover by heat and pressure, so that it has the functions of friction resistance, moisture resistance, light resistance, water resistance and dirt resistance, and increases its gloss. There are two kinds of high-gloss and matt films. The high-gloss film makes the books look dazzling and magnificent. The matt film looks simple and elegant. The matte film makes the color of the printed matter darker and looks softer. The bright film makes the printed matter more beautiful, but it is prone to chaotic reflection, and the matte film cost is higher than the bright film. Simply speaking, the sub-film print can be seen from all angles, and the bright film print is only visible from a fixed angle. However, the plastic film currently used for film coating is a non-degradable substance, which is disadvantageous to environmental protection. Now 90% of the books are using this process, and the general UV glazing is also carried out on the cover of the covered film. Some printing companies use environmentally friendly films, and some do not cover the film for local UV glazing. Foreign books are generally not covered, and many domestic publishers have begun to abandon the film and use a low-cost and environmentally friendly UV glazing method for cover finishing.

3. Bump embossing

This is a process of "printing" without using ink. Concave-convex embossing, also known as embossing, embossing, and embossing, is the use of mutually matching concave and convex steel or copper dies to extrude the outer contour of the entire pattern or print pattern. In book binding, the embossing is mainly used to print the cover, cover text and pattern or wire frame to improve the three-dimensional sense of the printed matter, or to print ink or partial UV glazing after the embossing, so that the graphic More prominent. This process is also widely used in the cover or cover of hardcover or textbooks. By hand carving, you can also make three or four levels of relief effect.

4. Color foil hot stamping

Color foil stamping is printed on a book cover made of wood, leather, fabric, paper or plastic. It is printed with gold, silver, red or other colors of anodized aluminum foil or powder foil (no light). Patterns, wireframes, etc. The cover of the book is noble and gorgeous after being printed by color foil, which can enhance the flickering of the printed matter. This way is heavily used by the cover finishing. In the past, it was often bronzing and hot silver on the cover of the hardcover book and on the back of the book. Now, there are more and more hot stamping and hot silver on the cover of the paperback book and the back of the book. Some of the paperback books are also gilded on the ring lining, the enamel sheet, and hot silver. Because the gold and silver are printed on the colored paper of the ring, it can produce a unique effect.

5. Die cutting, indentation

Die-cutting is a process in which a steel blade is arranged into a die-cutting plate to cut a printed matter or a paper into a shape on a die-cutting machine, which can cut a printed product into a curved shape or other complicated shape, and can also punch a printed matter. Or hollowing out and so on.

The indentation is also called the indentation line or the pressing line. The steel wire is used to emboss the mark on the printed matter or to leave a groove for bending. Generally, the cover of a thicker book is indented at the fold on the left side of the cover.

6. Imprint (embossing)

Pressing different textures on the surface of paper or cardboard can change the texture of ordinary coated paper or cardboard surface, making it look like leather, cloth, linen, woven, felt, bark, wood grain, pear skin Orange peel, etc., can make it have the elegant lines of clouds and leaves, and it can also have a dignified texture like oracle bones and earthenware. The textures now used on the surface of books can be designed as desired, and several different textures can be printed simultaneously on one layout.

7. Drop plastic

Drop plastic is to uniformly deposit transparent or hard crystal glue onto the surface of the object, so that the surface of the object can be crystal-clear and three-dimensional. It can be molded on the surface of paper, polyester, PVC, metal, etc. The plastic surface is also resistant to water, moisture and UV light.

8. Refraction indentation

The refraction indentation is a fine concavo-convex line such as a straight line or an arc which is arranged in a different direction by a dense embossing process on the surface of a mirror substrate such as an electroless aluminum foil stamping or aluminum-sprayed paper. It does not use ink, can make full use of the surface state of the paper, according to the principle of diffuse light, multi-angle reflects the change of light, can make the picture produce a layered three-dimensional image, so the refractory print has a unique fascinating effect. The different reflections on the surface of the concave and convex lines make the image on the surface of the book glow, novel and unique. With the change of the light receiving angle, the image text is looming, very dynamic and three-dimensional, lifelike and anti-counterfeiting. The paper for refractive processing is generally aluminized paper, and the surface has gold, silver and the like, and there is matte paper, and the available quantitative amount is 80-250 g/m2.

9. Surface matte

By the action of external force, a uniform embossed grit point having a three-dimensional effect is obtained by rolling deformation on the surface of the printed product. This process is often applied with hot stamping.