relief printing:
There are many types of letterpress printing materials, including books, magazines, newspapers, picture albums, and decoration printing materials. Before printing, the types and printing requirements of printed materials should be understood clearly.
Advantages: The expressiveness of the ink is about 90%, and the color is rich. Strong color reproduction. Strong layout tolerance. The printing quantity is huge. The range of paper used is wide, and materials other than paper can also be printed.
Disadvantages: plate making costs are expensive, printing costs are also expensive, plate making work is more complex, and a small number of prints are not suitable.
Offset printing:
Offset printing is an absolutely dominant printing method in China. Due to its fast printing speed, relatively stable printing quality, short printing cycle and many other advantages, books, newspapers and a considerable part of commercial printing are all using offset printing, which is the main way for label printing plants to print paper quality stickers in China.
The offset printing products have fine images and rich levels, which are suitable for mass printing, and the printing equipment can be used for multiple purposes, which is suitable for the characteristics of the Chinese label market. But sheet fed offset printing is not suitable for printing without absorbent film on the surface, because film labels are mostly roll to roll printing, requiring volatile dry ink.
Flexographic printing:
Compared with gravure printing, offset printing and traditional embossing, flexographic printing has its own distinctive features:
1. Low cost
Compared with the gravure printing machine with the same color deck and the corresponding offset printing machine, the price of the flexographic printing machine is much lower. In addition, the flexographic printing machine integrates multiple processes such as printing, die-cutting and polishing, which can be completed at one time without the need to purchase corresponding post-processing equipment. It has a high return on investment.
2. Simple equipment
The equipment structure is relatively simple, so the operation is also relatively simple and convenient.
3. High efficiency
Flexographic printing uses reel materials, which can not only realize double-sided printing of printing materials, but also complete online polishing (or film covering), bronzing, die cutting, waste discharge, winding and other work. It greatly shortens the production cycle, saves manpower, material resources and financial resources, reduces production costs and improves economic benefits.
4. Wide range
A wide range of printing materials, such as paper, plastic film, aluminum foil, self-adhesive paper, etc.
5. Good quality
The printing quality is good, the printing precision can reach 150 lines/inch, and the printing level is rich, the color is bright, and the visual effect is good, especially suitable for packaging printing requirements.
6. Environmental protection
The new water-based ink and solvent based ink are non-toxic and pollution-free, fully meeting the requirements of environmental protection and food packaging.
7. Good benefit
The flexographic printing press is made of reel materials, which can be used online with many post press equipment, greatly shortening the cycle. The cost of flexographic printing is only 10% - 20% of that of gravure printing, the ink consumption is 1/3 less than that of gravure printing, the power saving is 40%, and the scrap rate is only 1% - 2%, lower than that of gravure printing and offset printing, thus reducing the production cost.
Screen printing:
Advantages of screen printing:
(1) Not limited by the size and shape of the substrate
Generally, printing can only be carried out on a plane, while screen printing can not only be carried out on a plane, but also on shaped objects with special shapes, such as spherical surfaces. Objects with shapes can be printed with screen printing.
(2) Soft layout and small printing pressure
The screen is soft and elastic.
(3) Strong ink layer coverage
It can be printed in pure white on all black paper with strong stereoscopic effect.
(4) Suitable for all types of inks
(5) Strong optical rotation resistance
It can keep the luster of printed matter unchanged. (The temperature and sunlight have no effect). This allows the printing of some self-adhesive, without additional lamination and other processes.
(6) Flexible and diverse printing methods
(7) Plate making is convenient, cheap, and the technology is easy to master
(8) Strong adhesion
(9) It can be printed by hand or machine
(10) Suitable for long-term display and expressive outdoor advertising
