Introduction to post-printing process

 After printing, the process is the key step to give the soul, texture and function of the printed matter, which can be divided into three categories: surface treatment, molding processing and decoration. To give you a global overview, let's first look at a core process overview: picture 1. Surface treatment class This kind of process is mainly used to protect and beautify the surface of printed matter. What is coated: apply hot or cold pressure to a transparent plastic film (usually BOPP or PET material) on the surface of a printed material. Details: This is the most commonly used protection process. It is divided into photofilm and dumb film. Photofilm can greatly improve color gloss and saturation; The dumb film gives the product high-grade, soft matte texture, and it is not easy to leave fingerprints. The strength, waterproof and anti-pollution of paper after film coating are significantly enhanced, suitable for long-term use or friction of printed matter. Main application : book cover, picture book, leaflet, product manual, menu, packaging box, etc. What is glazing: A layer of colorless and transparent coating is coated on the surface of printed matter, which forms a bright protective layer after flow level and drying. It is cheaper than film coating and more environmentally friendly. It is mainly divided into: Common oily glazing: general gloss, basic wear resistance. UV glazing: UV instant curing light oil, high gloss, strong wear resistance, very fast drying. There is also a local UV, which is only lit in the pattern part, forming a sharp contrast between light and matte, and has a great visual impact. Main application: book cover, packaging, greeting CARDS, high-end tobacco and wine labels, etc. What is overoil (water-based optical oil)? An environmentally friendly water gloss process that has no odor in light oil itself. Compared with UV glazing, its luster is more natural, feel more lubrication, and maintain good wear resistance. Because of its environmental characteristics, it is widely used in food, drug packaging and children's books with strict requirements for smell. Two, molding processing This kind of process determines the final shape and structure of a printed matter. What is die cutting and indentation: The process of cutting and pressing the printed material under pressure is used to make the steel knife mold (knife version) in advance. Die cutting: To roll and cut a printed matter into a particular profile, such as a circular label and cartoon shape. Indentation: The groove line is pressed in the position where it needs to be folded to facilitate accurate bending in the later stage. Details: The two are usually completed synchronously, which is the most core forming step in the production of packaging box. Main application : all special-shaped labels, tags, greeting CARDS, packaging boxes uncut die. picture Folding and binding Folding: the process of folding large sheets into book posts in page number order and finished product size. The way has half fold, organ fold, wrap fold and so on. picture Binding: a key step in integrating a book post or single page into a volume. Common ways are: Horse order : the pages are folded and arranged with wire at the bend in the spine. Suitable for periodicals, picture books, exercise books, low cost but not too many pages. Wireless adhesive : milling back at the spine, wool, coated with hot melt adhesive and adhesive cover. Suitable for most paperback books and magazines. Lock wire adhesive installation : first, the book post will be in series, and then the cover will be glued together. Very strong, books can be completely flat, used for high-grade books and art album. hardcover : on the basis of locking wire adhesive, plus hard cover (book shell), is the most luxurious and durable way in book binding. picture 3. Decoration and efficiency This process aims to enhance visual beauty and tactile experience in printed matter and increase additional value. What is hot stamping (hot stamping/silver)? With the help of certain pressure and temperature, the metal hot plate is used to transfer the foil or pigment foil to the substrate surface. Details: It can instantly improve the luxury and recognition of the product. There are many color choices of metal foil, in addition to gold and silver, there are laser, color, wood grain and other special effects of foil. Hot and hot effect is strong, good texture; Cold and hot heat does not require heating, high efficiency, low cost, but adhesion and three-dimensional sense is slightly less than hot. Main application : book cover, brand logo, high-end business card, gift packaging, certificate. picture What is a punch/depression: Use the supporting Yin and Yang copper version or zinc version, under the pressure to make the paper locally plastic deformation, forming a relief three-dimensional pattern. Detailed introduction : this is a pure physical process that does not use ink. To make the pattern convex, concave and concave. The combination of the two (such as concave and then hot in the groove) can create extremely delicate and complex level effects, and the tactile sensation is very good. Main application : high-end business card, book cover title, invitation letter, wine label. picture picture embossing What is it : use a metal roller or plate with engraved texture to press a continuous, regular texture pattern on the surface of the paper. Detailed introduction : it can change the tactile sensation of paper and simulate the effect of leather, cloth, crocodile skin, sacks and other special materials, which greatly improves the expression and artistic sense of the product. Main application : title page of the art album, high-grade wrapping paper, book cover, gift box. picture How do you choose the process according to the requirements? picture Choosing the right process is a comprehensive consideration. You can refer to the following decision logic: Important tips Advance planning: Complex post-channel processes (such as# hot stamping +# punch + #die cutting) will affect the production of printing documents (such as stamping plate, die cutting bleeding and line line), be sure to communicate with printing service services at the design stage. Cost and efficiency: The complexity and quantity of the process are proportional to the cost and production time. Simple coating may take only a few hours to add, and multi-process combinations can take days. Material matching: Not all paper is suitable for all processes. For example, rough surface art paper stamping effect will be reduced, too thin paper is not suitable for heavy convex. The selection of paper is the foundation. www.eufuho.com