Self-adhesive labels are also called self-adhesive labels, timely stickers, instant stickers, pressure-sensitive paper, etc., which are made of paper, film, or special materials, coated with adhesive on the back, and coated with silicon protective paper as the base paper. Composite materials are processed into finished labels after printing and die-cutting. It can be applied to the surface of various substrates by simply peeling it off the backing paper and pressing it lightly. It can also be used for automatic labeling on the production line with a labeling machine.
Among the printing methods of web-type self-adhesive materials, emboss printing accounts for 97%, silk printing accounts for 1%, offset printing accounts for 1%, and flexo printing accounts for 1%. Due to the use of web printing and processing, all procedures are completed on one machine, so the production efficiency is high, the consumption is low, and the cost is low. At present, the label printing machine in my country is a letterpress printing form with few functions. It is only suitable for printing labels with simple color blocks and line patterns. The printing quality is not as good as single-sheet offset labels. However, the labels processed on roll paper can be rewinded into rolls, which can be applied to automatic labeling machines, barcode printers, electronic scales, and other equipment, which is convenient for automated production. Web-printed self-adhesive labels are currently the mainstream of self-adhesive printing in the world. (Adhesive sticker)
2. Single sheet of paper
Among the printing methods of such self-adhesive materials, offset printing accounts for 95%, emboss printing accounts for 2%, silk screen printing accounts for 2%, and computer and printing account for 1%. The label printing of single-sheet paper is the same as that of ordinary printed matter. Each process is completed on a single machine. The production efficiency is low, the consumption is large and the cost is high, but the printing quality is good. If the offset printing process is adopted, the quality of the label printed with four colors is much better than similar products printed by the label printer. However, since the sheet-fed paper printed self-adhesive products are in the form of sheet paper and cannot be rewinded, such products can only be labeled manually and cannot be automatically labeled on an automatic labeling machine. Sheet-fed printing is suitable for large-area self-adhesive color prints. Such as posters, posters, large-area labels, etc., are not limited to label products. It can be said that sheet-fed paper self-adhesive printing is an important part of the self-adhesive printing industry. (Adhesive stickers)