subject: On the packaging carton printing technology development [print this page] On the packaging carton printing technology development
Corrugated box printing process is an important process after processing, in a very long time, cardboard packaging as a single main form of transport is widely used, which determines the printing process to stay in the simple lines of text printed stage, has been not developed quickly.
But with the growing packaging market, a single carton to the sales function of the transport function of the gradual change in consumer psychology and aesthetic values are to buy the ever-changing; exports growing also forced domestic production to international carton integration, on the one hand finishing increasingly demanding, the other on the product's environmental performance is also set forth requirements. Tile edge carton bears the transport of goods, merchandise display and promotion of the dual task. The eye-catching colors more vivid, more and more fine print pattern, the only way to attract customers interested in shopping desires.
This requires the strength of corrugated box to meet the surface at the same time with excellent print quality, color printed multi-color printing has gradually become the future development direction of carton. Carton printing process introduced Present, China's diverse printing corrugated boxes, mainly offset, flexo direct printing, flexo or gravure pre-printing, screen printing and the rise in recent years, the number of just printing. One corrugated flexo printing ink in the version of their material, ink, printing pressure, printing efficiency advantages account for the major folding carton market. Each approach has advantages and disadvantages and print printability range, based on the actual situation and characteristics of the product cartons choose the right printing process. Carton Offset Printing Offset plate technology with simple, low cost and speed advantage, is currently the most widely used indirect printing technique, printing books and periodicals, paper packaging and printing has been dominant. The printed version of the graphic part and the blank part of the almost in the same plane, when the first printing plate of water, wetting the empty part of the ink coating after the application of the principle of oil and water repel the ink transfer to the blanket on, and then transfer to the substrate, completing a printing process.
Offset printing corrugated box is divided into offset printing and direct printing of two indirect methods. Indirect printing is the first printing corrugated box facial tissue, then use the mounted corrugated single complex. Offset product line screens up to 200 lines / inch, exquisite design, quality and stability, and high quality. PS edition plate easily, can be coated, polishing and other surface finishing techniques used in the current high-end packaging carton sales accounted for a considerable portion of the printing ratio. Offset technology, while more mature, printing speed, but the way is not suitable for cardboard production line linkage, finished lower in productivity, process complexity, long period. As the offset printing process used in fountain solution, will increase the moisture content of base paper, the control is also easy to produce overlay allowed improper failure. Plus the pressure offset printing large format printing and limited factors of production can not meet the needs of high-volume carton. Processing technology from the board of view, offset mounted after the process, also left because of too much pressure and colloid in water, so that cartons of flat crush resistance, adhesive strength can not meet the high technical specifications on the packaging of goods requirements.
In addition, the offset is still no corresponding environmental impact of ink used is yet another obstacle to the promotion of its use. Product development using micro-corrugated cardboard industry, the future development trend of the printing process offset is the best way. Corrugated foreign direct offset printing technology is relatively mature now, production can be directly on corrugated board on special offset printing. The process can guarantee the forming of cartons, but also complete the fine tissue paper printing, but printing higher, and the price is more expensive, longer period of time also will not promote the use of SMEs in the country. Carton flexo technology Flexible printing technology uses flexible photosensitive resin plate, the graphic part of the processes, the blank part of the sunken, using doctor blade, anilox short ink transfer ink printing, letterpress printing process is a species.
