The post-press processing involves two parts , one part is the post-press processing of books and periodicals, mainly the binding work of various books and periodicals; the other part is the surface finishing of the printed products, mainly including the film and the upper layer. Technical processes and equipment such as light, die cutting, indentation, hot stamping, and embossing. (1) Binding is a general term for the process of folding a printed sheet into a signature according to the design specifications, and then processing and decorating the signature until it is completed. Binding is actually ordered first and then installed, because it is customary to call binding. The process of ordering is called book core processing, and the processing of ordering the book cover on the outer cover is called book processing, which is also called book binding processing. There are many types of work in the binding process, there are many types of machines and types, and there are many changes in processing. There are more than 20 kinds of methods for loading and unpacking. The binding processing of books is mainly divided into two major processes: book core and book cover. The bookbinding method of book cores is various, mainly requiring firm and flat binding, and book sealing processing represents the appearance of printed products, and the requirements are more stringent. The role of binding is to prevent the loss of pages, easy to appreciate and read, easy to save and collect. At present, the commonly used loading methods mainly include paperback, hardcover and saddle stitching. In addition, there are ancient line, loose-leaf head and profile binding (special binding). 1 Paperback is the binding method used in the current production of books and magazines. Generally, books and some publications without special requirements can be used. Its characteristics are simple process, short book publishing period, high efficiency and low cost. The main processes of paperback are folding, matching, bookbinding, cover, hot back, cutting, inspection, etc. Paperback binding is divided into several types according to the binding materials and methods used: wire binding, sewing binding, lock binding, wireless binding and plastic binding. 2 Hardcover refers to an exquisite production method and technique of books. Hardcover books are mainly processed on the cover of the book and on the back of the book block and on the corner of the book. According to the shape of the book block, the book block has the form of a round back book block, a square back book block, a rounded book block and a square book block. According to the shape of the cover, the cover has a full and half face. There are also hot stamping patterns on the cover. Compared with the paperback book, the processing technology of the hardcover book book core has increased the processes of flattening, rounding, ridges, gauze, plugging cloth, backing paper, upper book case, and groove forming after cutting the book. In addition, there are a series of auxiliary processes such as processing book covers and hot stamping. At present, the sewing machine cannot be combined with other binding equipment due to low productivity, so the production line of hardcover books generally starts from the book core flattening until the book case is formed. The processing of the book case is carried out outside the production line. 3 When saddle stitching is set for the book, the cover and the book block are matched together to form a book, and then the book is cut and cut. The bound booklet is placed on the booklet of the book (on the back crease). This kind of binding form of the signature is matched along the crease and mounted on the machine to form a horse-riding style, so it is called saddle-stitched. This binding method is simple in process and fast in book publishing. Suitable for journals, magazines, etc. with a small number of pages (less than 100 pages). At present, saddle stitching is generally completed on the saddle stitching link line from the collation check book to the cut book, and the productivity is high. 4 The ancient line is called the line, and the binding form of ancient books in China has undergone the following evolution: Reel loading → Cyclone → Folding → Butterfly loading → Line loading 5 loose-leaf 裱 装 is to punch a single leaflet or The post-press binding processing method of the rubber head is connected to the book. It can be divided into two categories: spiral and taro. It is divided into spiral, taro, comb, plywood and hole. 6 Shaped binding is not standardized processing form and deformed version (2) Film is one of the surface decoration processing techniques of printed matter. It is a processing technology that applies plastic film to adhesive and heats and presses together with paper printed matter to form a product. . The film-coated print has a smooth and bright surface, bright colors and strong three-dimensional effect. At the same time, due to a layer of plastic film, it also plays the role of waterproof, anti-fouling, wear-resistant and tensile. (3) Polishing is to apply a layer of colorless and transparent paint on the surface of the printed matter. After leveling, drying and calendering, a thin and uniform transparent bright layer is formed on the surface of the printed matter. Since the glazing coating has a high transparency and smoothness, it can exhibit a beautiful luster on the surface of the printed matter. Glazing is considered to be a more effective method to improve the surface properties of printed matter. At present, the glazing process is widely used in the surface treatment of packaging and decoration, book covers, albums, trademarks, advertisements, and large decorative prints. (4) Die-cutting processing is a molding process technique in which a die-cutting die is combined into a die-cutting plate according to the design requirements of the product design, and the printed matter or other slab blank is rolled into a desired shape under pressure. (5) The indentation processing is to use a crimping knife or a pressing die to press the line mark on the sheet by pressure, or to roll out the line mark on the sheet by the rolling wheel, so that the sheet can be bent and formed according to a predetermined order. Process technology. (6) Hot stamping processing is a method of hot stamping metal foil or pigment foil onto printed matter or other substrates by means of a certain pressure and temperature, which is called hot foil processing, commonly known as hot stamping. The essence of hot stamping is offset printing, which is a process of transferring the pattern on the hot stamping paper to the substrate by the action of heat and pressure. When hot stamping, the bonding layer on the bronzing paper melts, forming adhesion with the surface of the substrate, and the silicone resin of the release agent of the bronzing paper flows to separate the metal foil from the carrier film, and the graphic on the carrier film is transferred. Go to the substrate. The reason for the transfer is that the hot melt adhesive is heated to produce adhesive force and the release agent is heated and the adhesive force disappears. (7) Concave-concave pressing is an imprinting technique that does not use ink. It uses a set of graphic corresponding gravure and relief to place the substrate between them, and presses the relief-like concave and convex image by a large pressure. This method is mostly used for post-press processing of printed matter and paper containers. Such as trademarks, cartons, New Year's cards, bottle labels and other decoration.
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