In the process of packaging color box printing, quality problems often occur due to inadequate pre-press platemaking. Light materials and man-hours are wasted, and products are scrapped in serious cases, causing serious economic losses. In order to prevent the above problems, the editor of Lijia thinks that the following aspects should be paid attention to.

There are two kinds of laser card paper according to whether there is a film on the surface of the paper (that is, whether there is a film on the surface when you tear the card paper by hand) : The first kind is the laser film and the card paper are compounded together by Glue, the second kind is no film, there’s still a laser pattern on the paper.

There are many types of paper, such as lightweight paper, kraft paper, edging paper, dictionary paper, and synthetic paper for food packaging. Designers should be good at using various paper characteristics, not only calculate the size of printed products according to paper specifications, and not waste paper, but also recommend the use of some recycled and recycled environmentally friendly paper and processes as much as possible to enhance the corporate image and society of the brands they serve Public interest image.

Offset printing belongs to lithographic printing. Lithographic printing is the most common printing technology in packaging printing. It has outstanding advantages in high-quality and high-efficiency printing, and a wide range of printing materials. Lithography is an indirect printing. The process of restoring graphics to the surface of the printing material is completed by the effect of the printing plate and blanket cylinder.

To judge the quality of the packing carton, we need to observe the material of the packing carton, the different quality of the packing carton, the material used feels different, we can observe from the outside whether the material is cloudy, the material with Sundries, or relatively clean, with a stronger texture, we can see.

According to the design requirements, specific paper and materials are processed and manufactured on a machine equipped with a steel knife stencil, and the paper or material is die-cut into the required shape and presents special effects in form. Such a process technology is called die cutting. The specific paper and materials are processed and manufactured on a machine equipped with a steel wire template according to the design requirements. The surface of the paper or material is printed with deep or shallow steel wire traces under pressure, and then folded by hand or machine. The paper And materials are easy to bend and form a certain form of structure or shape. Such a process technique is called indentation.

Varnishing refers to coating or printing a layer of colorless and transparent ink or raw material on the surface of printed matter (commonly known as "varnish"). After drying or even calendering, the surface gloss and smoothness of printed matter are greatly increased. , Highlighting the grade of printed matter. Secondly, glazing can improve the abrasion resistance of the printed surface and protect the graphics of printed products. For printed finished products that have been processed, the common practice is to use silk screen UV glazing and coating glazing, while the more advanced glazing is to be completed at the same time as on-line operation and printing. Due to different raw materials and glazing methods, Of course, these kinds of glazing effects are also different.

Lamination, also known as "foil", "plastering" or "post-printing". That is, the plastic film coated with the adhesive and the paper-based printed matter are subjected to processes such as heating, pressing, and cooling. The surface of the printed matter is covered with a layer of transparent plastic film with a thickness of 0.012 to 0.020 mm (1.2 to 2 silk) to form a post-processing technology for paper-plastic printed products.

Now a variety of packaging, but the use of more or carton packaging, not only because it can be recycled, but also because of its convenience, so today and well share it with you. With the improvement of people’s living standards, rich products meet people’s needs at the same time, a variety of packaging also came into our lives.