[Chinese Packaging Network News] All kinds of packaging boxes have become an indispensable part of product sales. Their formation cannot be completed by a simple design manuscript, but it also requires a series of processes. An exquisite packaging box design is achieved by the following steps: design, production of print, color separation, plate making, printing (including embossing, hot stamping, and film lamination), rolling boxes, and adhesive molding. Therefore, designers want to design a perfect packaging box not only rely on design skills but also need to master certain printing process knowledge. This is also the most basic and important process of packaging design.
The printing process of the packaging box focuses on the printing process of the packaging paper. For now, there are mainly two printing processes for the packaging box: one is the relief printing, including the lead printing and the copper printing; the other is the more advanced offset printing. Printing, also known as plain printing, offset printing presses have small offset presses and large offset presses.
1. Relief printing of packaging box design
Black-and-white drafts are an important part of letterpress printing. Letterpress must be based on the color design draft, in addition to draw the black and white version of the difference between the color draft. It will be used directly for photographic light. Black and white manuscripts are not drawn well or are inconsistent with the manuscript. A wrong version will affect the printing effect. Pay attention to put the incision. The incision is the part of the printed product that is cut with the knife after printing. The general incision must be 3mm. If the color of the artwork is edge-to-edge without leaving a white border, 2-3mm of bleeding should be released when drawing a black-and-white script. In this way, after the printing is cut into finished products, white edges are not exposed, and net size lines (finished product lines) and hair size lines are drawn. Finally, you must draw a crosshair in the middle of the manuscript, up, down, left, and right to make imposition during the process of making a plate.
2. Offset printing plate design
The design of the offset printing plate can be directly made into a manuscript, and the color pictures or the color pictures on the manuscript can be scanned through the computer for dot scanning. Regardless of whether it is embossing or offset printing, the carton pack has its own particularity. It must also draw the carton structure and draw the imposition map as needed. The carton structure of the carton structure is used for row knife grinding. After the carton is printed, it is necessary to use a knife mill to cut the finished product and to roll the folding line. Therefore, the tool grinding pattern must be consistent with the structure of the design drawing, and the position of the structure line can not be any error. Otherwise, due to structural line errors, the structure behind the roll box may be biased to the top or bottom, causing errors in the entire box surface. The imposition map is made according to the characteristics of the printing machine. If the hair size of the draft is a six-opening, and the machine on the car is four-open, then it is necessary to spell out the sixteen-page draft into four drawings. Leave the trimming line between the tray and the tray 3mm. It is also necessary to leave paper on the machine, the machine to the paper bite about 10mm. It is easy to use the printing plate before the plate making, and finally it also needs to leave the raw edge of the paper to be trimmed to 10mm. In general, the knife grinding pattern and the imposition drawing can be drawn into one piece.
Letterpress and offset printing are the two most commonly used printing processes. The letterpress printing press is a kind of semi-manually operated small machine; the difference between the letterpress printing and the offset printing is different due to different processes, and the requirements for the design draft are also different when designing. Therefore, it is necessary to consider which printing method will be used before designing, and it is in particular necessary to ascertain whether relief printing or offset printing will be used. For more information, you are welcome to continue to pay attention to China Packaging Network!