The process of realizing graphics, characters, colors, etc. on packaging materials by printing is called packaging printing; the design process of applying printing elements as a language of expression in packaging design, and making the plan meet the requirements of printing technology, we call it packaging printing. Design for packaging printing. There are various forms of packaging, and packaging printing is also more diverse and complicated. Its technical characteristics and product characteristics are mainly reflected in the following aspects:
1. The types of substrates vary greatly
General printing is usually flat printing on paper, and packaging materials include not only paper and cardboard, but also corrugated paper, plastic, metal, glass, ceramics, and various composite materials; packaging containers are also becoming more and more diverse. There are also packaging prints with curved and irregular surfaces. Therefore, the printing materials and forms of packaging and printing products are different.
2. Diversified printing methods
In addition to conventional offset printing, gravure printing, flexographic printing and screen printing, in order to add some special decoration or functional effects, packaging printing often uses special printing technologies, such as three-dimensional printing, laser holographic printing, liquid crystal printing, combination printing Wait.
3. Flexible production methods
According to the requirements of the product, the production method of packaging and printing presents distinct characteristics, such as: many varieties, many specifications, etc.
4. Complex pre-press and post-press processing
Packaging and printing materials are diversified. After printing, paper packaging often requires glazing, film planting, die-cutting and other processing. When printing plastic packaging, in order to increase the adhesion of ink on the plastic surface and remove static electricity, it is usually necessary to pass through before printing. Corona and other methods are used to pre-press plastics; when metal packaging is printed, it is necessary to print paint and white ink before printing, and after printing, it needs to be printed with varnish and stamped into cans.
5. Packaging and printing products need to meet packaging suitability
In order to meet a series of requirements for the packaging process of filling the contents and the use of the packaging, the packaging and printing products also have some characteristics, such as: packaging filling resistance, friction resistance, content resistance, water resistance, light resistance, odorless. Wait.
