The hottest traditional screen printing encounters

  • Detail

Traditional silk printing "encounters embarrassment" digital printing "suits the case"

it is reported that Chinese people began to use horsehair and templates for the initial silk printing 2000 years ago, which has promoted the development of human material civilization in the world to a certain extent. Nowadays, with the multiplication and tempering of civilization, the silk printing technology has also been continuously improved and improved. It shines with the advantages of simple equipment, convenient operation, low cost and wide range of applications

however, with the improvement of people's requirements for printed matter, a large number of spot colors and transition colors appear in printed matter, as well as customers' high-precision requirements for printed patterns, so that the traditional silk printing process has been unable to meet the needs of the market. At the same time, it has been criticized for its long time and heavy pollution. At this time, the author suspects that data report printing may be able to take over the traditional silk, which also points out the direction for the development of plastic granulator technology in China

traditional silk screen printing is embarrassed

in the face of the ever-changing printing market, various printing methods are doing their best to stabilize their position. Compared with other printing processes, the disadvantages of traditional silk printing about rough, single, slow and dirty seem to be more and more prominent, which makes its further development into a bottleneck

thick. Due to the influence of silk lattice density, generally speaking, the printing accuracy of silk printing can only reach 80 ~ 100 lines, but at present, offset printing and flexo printing can reach more than 250 lines

single. Traditional silk printing is mainly based on three primary colors. Even if some spot colors are used, the color difference between batches can not be basically solved because the spot colors are mostly completed by manual color matching. In addition, the problem of transition color is also one of the difficulties that silk printing is difficult to overcome

slow. At present, silk printing enterprises use a lot of 6090 semi-automatic silk printing machines. The effective printing area of this kind of equipment is 60mm 90mm. The single person single machine operation is implemented, and the work efficiency is low. In addition, a certain curing time should be left after each set of color printing, and the printing speed is slow

dirty. During the curing process of silk printing, a large number of organic substances, such as benzene and benzene derivatives, will volatilize, which has serious potential safety hazards and will pollute the surrounding environment and operators

digital printing suits the case

in the development process of the era with digitalization as the core, the printing industry has undergone earth shaking changes. The early color inkjet printing technology has entered the industrial production from office automation. In the author's opinion, it can easily and skillfully solve all kinds of embarrassments encountered by traditional silk printing

the introduction of digital printing technology into silk printing first revolutionized the silk printing plate and scraping scraper, and replaced it with a special digital printing inkjet nozzle. Since the silk screen printing plate is cancelled, the printing process is not restricted by the silk density, so the problem of coarseness is solved

it is not difficult for us to find that the image of the product obtained by digital printing is also a combination of dots after amplification, so the problem of transition color can be solved. At the same time, the problem of spot color can be solved by using advanced computer color matching and color matching technology. Therefore, the single problem is no longer a problem

for the crux of slow recording of the original position, in view of the fact that the whole printed image is synthesized at one time on the digital printing machine in the process of digital printing, there is no problem of leaving a certain time for curing after completing each chromatic set. The printing speed is only related to the printing mode set by the digital printer

the ink used in digital printing adopts advanced UV curing technology, which can be cured in time after printing. At the same time, the volatilization of its organic solvent is basically similar to offset printing, so as long as local forced ventilation is carried out in the printing area, the problem of dirt can be solved

the road of connecting rods is rough.

digital printing can really provide a theoretical basis for the four disadvantages of traditional silk printing, but there are also several points to consider in practical operation

1. Equipment investment

the current price of a digital printer with an effective printing width of about 1 meter and a printing speed of 20 ~ 30 square meters/hour is 800000 ~ 1million yuan. According to the preliminary calculation, after investing in this kind of equipment, we must maintain the two shift system every day to make profits. Who will eat the first crab is often a difficult knot. Moreover, at present, most small and medium-sized silk printing enterprises are living fairly well. Therefore, for the project of transforming traditional silk printing to digital printing, small and medium-sized silk printing enterprises are mostly in the wait-and-see stage

2. At present, the cost of consumables for digital printing is about 8 yuan/square meter, while the cost of consumables for traditional silk printing is 2 ~ 3 yuan/square meter, and the cost of consumables for high-quality silk printing is only 4 yuan/square meter. In addition to the labor and plate making costs of silk printing, the critical point of material cost between digital printing and traditional silk printing can be obtained through simple calculation. Theoretically, this critical point is the dividing line between digital printing and traditional silk printing. We compared the cost data of digital printing with that of traditional silk printing according to the current environment and the price reduction of digital printing

3. Software upgrade problem

in digital printing, the technical depreciation in the equipment depreciation project is much higher than the traditional equipment depreciation, that is, digital printing equipment is often not worn out, but needs to be replaced due to backward technology. Therefore, manufacturers of digital printing equipment should consider the feasibility of equipment technology upgrading as a project that must be considered when developing products. It is suggested to provide free technical software upgrades and after-sales services to solve users' worries about technical software

4. The problem of wide generalization of substrate

traditional silk printing does have the disadvantages of thick, single, slow and dirty, but at present, a large number of non paper materials are printed, such as PVC, PE, PP, ABS plates, plexiglass, acrylic, ceramics, crystal, aluminum-plastic composite plates, metal plates will also greatly increase the export proportion of xinxingguo, and the surface printing and decoration on hard materials cannot be separated from traditional silk printing. This is a contradiction that must be solved, and it is also an important issue that digital printing needs to face to succeed traditional silk printing

with the increasing requirements for timeliness, high quality and environmental protection, traditional silk printing may be difficult to move forward because of its inherent disadvantages. When we discuss replacing traditional silk printing with digital printing, we can also adopt the method of integrating new technologies and ideas into traditional silk printing, in order to expect it to bloom new charm

Copyright © 2011 JIN SHI