Printing process

Different types of materials in the printing process, labels for different purposes, and different printing processes.

Ordinary label printing machine is a utility equipment, and the processing factory can formulate the printing and processing process according to the requirements of the customer.

The self-adhesive label printing process is as follows: Unwinding A intermittent type: There is no tension change when the web is unwound, so no adjustment is required. Since such equipment does not have a paper positioning correction device, the end face of the web is required to be clean and tidy, ensuring accurate overprinting during printing. Continuation: used in the round transformation circular labeling machine. Flattened by hot stamping: used on round flattening, flat flat labeling machine, low speed. Round pressing circle: It is used on the circular pressing label printing machine. It has fast speed and can be used for scalding. It is rarely used in general, and the gold printing process is generally used instead of hot stamping. Printing flat flat: suitable for small area, complex pattern printing. UV printing: In the above three printing methods, after adding UV monotony, the film self-adhesive material can be printed. Gold is applied first, and then printed on equipment without UV monotony. First printing, after bronzing is used on equipment with UV monotonous device, the ink is quickly monotonous and bronzing on the ink, the bronzing pattern is designed freely, not restricted by ink, suitable for high-level label printing, is an advanced consumption. Process. The film is laminated on the paper or film material to maintain the ink, waterproof, moisture-proof, add label strength, and add a three-dimensional texture. The laminating film is divided into a bottomed paper laminating film and a bottomless paper laminating film. Due to the low cost of the latter, it is currently widely used. According to the requirements of the process, there are two kinds of composite packaging machine transparent film and matt film, the former is more common. Punching is not common and is mainly used for computer-printed labels. The requirement is to position the drive hole on both sides of the label, or the label used on the price tag. It is required to punch holes in the middle of the label for positioning and driving. The die-cutting of the die-cut label is a semi-cutting process, that is, only the surface material is cut through and the bottom paper is stored. Divided into two processing methods: such as flat die-cutting, suitable for all types of label printing machines, manual plate making, low cost, short plate making cycle, but low viscosity, suitable for short-run printing. At present, almost all international label factories use flat die cutting.

Paper-based self-adhesive label processing method, sheet paper such as self-adhesive material printing method, offset printing accounted for 95%, embossed accounted for 2%, silk screen accounted for 2%, computer and printing accounted for 1%. It can be said that sheetfed sticker printing is an important part of the self-adhesive printing industry. In the printing method of web-type web-type self-adhesive materials, embossing currently accounts for 97%, silk screen accounts for 1%, offset printing accounts for 1%, and flexo printing accounts for 1%. Due to the use of web printing, all processes are completed on one machine, so the consumption efficiency is high, the consumption is low, and the cost is low. At present, China's label printing machine is a letterpress printing method with few functions. It is only suitable for printing complex color blocks. The label of line-like patterns is not as good as the label of sheet-fed offset printing. However, the label processed by the web can be re-rolled into a roll, which can be used in automatic labeling machines, bar code printers, electronic scales, etc., to facilitate automatic consumption.

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