3 Commonly Used Carton Packaging And Printing Processes

The carton packaging and printing technology is simple, economical, and well received. There is a large demand for carton in the market and there are many printing processes. The packaging and printing processes mainly include: offset printing, gravure printing, flexographic printing, letterpress printing, Screen printing, pad printing, spherical printing, heat transfer printing, etc. nine kinds. Now let's introduce the first three commonly used carton packaging and printing processes in detail.

Offset printing process

The offset printing process has multi-color rental, multi-function roll paper and flat paper models. The former has a higher production speed and is suitable for printing pre-printed cartons with larger production batches and relatively fixed product structures. After facial paper printing, it can be combined with corrugated paper. The corrugated cardboard on the production line is directly laminated and glued. The latter has a printing speed of up to 10,000 sheets per hour, which is suitable for printing medium and small batches of carton products. The printing specifications of facial paper can be flexible and changeable. The flat paper model can also directly print fine corrugated board, and its overprint accuracy is higher than the former, and the quality is relatively stable. The thin ink layer of the offset printing process is more suitable for overprinting or overprinting of fine line plates and multi-color anilox plates. It has high dot resolution, rich layout layers, clear gradation boundaries, soft tones, and good printing reproduction. The production advantages of convenient and fast plate making, easy plate loading and proofreading operation, and low plate making cost, are widely used in the printing of color pre-printed carton surface paper.

Flexo printing process

The flexographic printing process is also divided into web and flat paper multi-color printing presses. Among them, the flat paper printing machine has a pre-printed model for printing surface paper, and the flat paper printing machine has a pre-printed model for printing surface paper. There is also a unit that can directly print corrugated cardboard, and can finish cutting, creasing, and slotting on the garment line. The flexographic printing process is compatible with the advantages of letterpress, flatbed and gravure printing processes. Because the printing plate is flexible, the printing pressure is much lighter than other processes. It has lighter printing pressure, thick printing ink, clear imprints, and printing resistance. The main feature of high rate. This process can print cardboard with good surface gloss and cardboard with rough surface; it can print non-absorbent materials and cardboard with strong absorption; it can print both thin paper and thick paper; It is suitable for printing fine mesh plates and line plates, and also suitable for printing line plates or solid plates with spot colors. Flexographic printing plates are divided into rubber plates and resin plates. The main materials of rubber plates are natural rubber and synthetic rubber. Its plate-making has three types: hand-engraved, laser-engraved and cast. When using a rubber plate, pay attention to its printing activity. For example, considering the ink affinity, ink transfer, covering power and reproducibility of the rubber, it is better to use water-based ink for printing. It is better to use natural rubber plate material than synthetic rubber plate. .

Gravure process

The gravure printing process can also be divided into web and flat paper printing. There are also multiple models of color sets and functions. This printing process has the characteristics of higher printing plate durability and faster printing speed. Because the gravure ink layer is thicker, the printing ink color is full and full of three-dimensional effect, the layout is rich in printing layers, the texture is strong, and the printing ink color dries quickly, so it is more suitable for large area and thick ink printing products. The gravure printing process is not only suitable for printing solid, spot-color line plates, but also fine anilox plates. Compared with offset printing, flexo printing or silk screen printing, this process is the least likely to produce printing color difference. The quality of carton printing products is The most stable and best. Since the gravure plate is made of steel rod material through electroplating, electric engraving and other processing processes, its plate making process is more complicated, the plate making materials and costs are more expensive, and the plate changing operation is also more troublesome, so it is especially suitable for batches Larger pre-printed carton packaging and printing production can better reduce production costs.