Polishing oil, also known as printing oil, refers to printing a transparent and shiny oily ink layer on printed matter, so printing oil belongs to the printing process, not the real post-press process, so here is just a list. The purpose of varnish is mainly to improve the gloss of graphics and text and make the picture more vivid; Bright oil can also be printed on the cover as a protective layer. It can be divided into bright oil and dumb oil. Bright oil is bright in color, while dumb oil is dim and elegant in color.

Ultraviolet rays:

After UV, the gloss of ink color is more prominent, and the local UV ink layer has obvious concave-convex feeling, giving people a special visual experience. UV can be screen printing or offset printing.

Plastic film mulching:

Laminating, also called gluing, refers to the process of covering a plastic film on printed matter through the high temperature pressure of laminating machine. There are two kinds of film mulching: bright film (glossy film) and matte film (matte film). The former is brightly colored, while the latter is dim and elegant. It has decorative and protective effects on book covers. Note that paper with uneven surface is not suitable for laminating.

Die cutting:

According to the design requirements, the process of cutting the paper into different shapes or "hollowing out" the middle of the paper requires making a die-cutting version before die-cutting.

Hot stamping:

Also known as anodized hot stamping, with the help of certain pressure and temperature, the printed matter and metal foil are pressed against each other in a short time by using the template installed on the hot stamping machine, and the graphics and text of the hot stamping template are transferred to the surface of the printed matter. This process is often used on the surface of cover and shell.

Indentation and protrusion:

Concave-convex printing, also known as concave-convex printing, is a processing method of pressing printed matter into embossed graphics and texts with matching concave-convex plates without printing ink, which is mostly used for processing printed matter such as shells, covers, trademarks, cartons and greeting cards.

Luo Erjin mouth way:

Often used in hardcover books or framed books, such as postal books. The process of scalding one or three notches of the book block with gold foil or silver foil material rolled by brass to make the book block appear gold (silver) color.

To install:

With the improvement of living standards, the forms of children's books are more colorful. Mounted cards that have appeared in recent years are one form. It is made of multi-layer cardboard or paperboard, often combined with die-cutting, fillet punching, pasting, indentation and other processes, with various materials as accessories, which has the advantages of strong interest, readability and no harm. In addition, there are commemorative books such as postal books and photo albums, which are often framed and hardcover.

Chapter VII Post-processing

In recent years, the post-processing of books has become more and more diversified, including plastic bags, CDs, seals, waist seals and anti-counterfeiting labels.

Plastic packaging: on the plastic packaging machine, the book is sealed with plastic film to protect the book from pollution.

Gift packaging: There are many kinds of gifts attached to magazines, such as food, drink, clothes and fun, with different shapes, sizes and hardness, so different packaging forms are needed.

Packing: Wrap it in kraft paper and put it in a box.

After the waste paper is packed, it is reinforced with a "well" belt.

Packing: The height of the carton shall not exceed 230mm, and the gross weight after packing shall not exceed 20kg. Generally, 16 books have two cardinality, and 32 books have four cardinality.