Industry Overview: The Development Of Printing Technology At Home And Abroad (under) - Printing

III Printing Machine development ? Flat screen printing machine Although the rotary

screen printing show absolute advantage, and there has been greatly improved fineness, but the flat screen printing still will not be eliminated. In fact, the flat screen printing technology is re-valued, due to printing small quantities of the trend is increasing, from an economic point of view, in this case, use the flat screen printing is beneficial. (See Table 4)

Table 4 flat screen and rotary screen printing of the relative cost of printing a continuous quantity (m) the relative costs

Flat screen rotary screen 200 100 125 500 90 110 1000 70 85 3000 40 40 Digital system networks and shorten the time for networks to introduce automation technology to facilitate more into a flat screen printing printing technology can not be ignored. There are two new models, printing belt can be heated to 50 , and the workers get the same platen nuanced and fine printing results. A multifunctional KOMBIPRINT printing machine, and rotary screen flat screen combination of the characteristics of the robot is equipped with printing devices for network and scratch to achieve a complete automation.

Rotary screen printing machine Printing machine manufacturer's European allies have made their interest focused on rotary screen printing machine, especially dedicated to the research and development of an effective system to reduce the printing process of the fabric and Colorants Waste. University of Leicester's DeMontFort

Britain from the eight printing plants collected printing flaw data analysis report, the most common flaw is not allowed to flower and set lines are not allowed. In the old equipment, and calibration of the flowers by visual observation and manual adjustment to be completed to waste a lot of fabric. Over the past 10 years, there have been many improvements in this area, for example, can be calibrated with a laser beam alignment screen, you can also used to correct the position of each screen. In order to eliminate Gear Space or drive shaft torque error caused by the deformation, in the printing machine Zimmer with the AC servo motor, and Stork printing machines are used to directly drive sieve Classification With or without stage ring motors. Stork provided to improve the accuracy of the other improvements is the use of franking machines installed in each head Sensor Probe fixed to the conduction band of metal, with precise control pulses to drive a single screen, to ensure that the conduction band and the screen simultaneously, this technology is STORK patent, referred to BPMS. For example, the new RD-DD-type and Dong Jia Susi type rotary screen printing machine, printing machine in each head a separate transmission system are installed, each equipped with a ring motors, rotary screen can be connected directly with motor rotor ring without the need for error prone transmission, relying on the pulse motor Generator With electrodes measuring device and can be very precise control of speed and correct angle position rotary screen, with BPMS positioning measurement system is the transmission belt from the head, both through Electronic Control the precise linkage. Such a separate transmission of rotary screen printing machine, between two adjacent network accuracy of the spend up to 0.06mm.

DeMontfort University study shows that, if installed, the advanced system, beginning in the printing of fabric used to spend about 90% can be saved. The ultimate goal of the study is printing machine equipped with an intelligent video monitoring and flaw identification system, now has EVS camera system can be applied to detect and report defeats printed fabrics.

Improve the efficiency of low-volume product key is printed screen replacement time. Improved ways to increase mechanization and the installation of an electronic control system. Most printers use open-grid and the open style Bearing Easy to change blade and rotary screen. Buser claims, the application of appropriate equipment, a 7-color printing machine for network time only 15 minutes. If the net 25 times a day for the aircraft's efficiency up to 70%. Now have a washing-line network systems, for example, Stork's Print @ Change printing machine of each head is equipped with retractable curtain gate, can be across the machine, the screen under the extension, to prevent changing / washing net dripped onto the fabric when the paste. If a confidential 16-color printing of two consecutive 8-chromatography of the patterns produced, the system can ensure that the minimum net result for the time delay caused. According to Reggiani and Ichinose introduced through line cleaning, the cleaning of Circular 15 chromatography, about 10 minutes to complete.

Different slurry system has been studied scraping, scraper and scrape the roller rotary shear behavior of a series of theoretical results as reflected in the report. The results show that compared with the scraper, magnetic roller scraper no particular advantage. Zimmer has developed hydraulic crack style to the pulp slurry scraper hydraulic device can be adopted by the slit-type net drag increases to the slurry paste, on the velvet fabric has good penetration effect, but there are also slit the outer edge of and wear problems between Screen. The device is suitable for Carpet Printing or foam printing.

Addition to the traditional way of printing the standard, the Japanese company's eastern extension (Ichinose) introduced the tilting rotary screen printing method. Paste from the top down input, always keep the equal to the supply of fresh paste quantitative reduction of paste in the turret because impurities cause the blade scars and uneven printing result for the pulp segment marks, products, printing quality improved.

Equipment manufacturers also try to limit "waste slurry" and re-use the remaining amount of colorant way to reduce the waste of printing paste. Stork company unique paste recovery system, with a special Pump By a plastic ball will remain in the pulp slurry pipe hydraulic back colorant. In order to control the minimum waste of paste to predict the length of a printed color back to the required amount of paste is very valuable. Impact of peace on rotary screen printing paste used actual production capacity of equipment parameters, the results show that, for the determination of the printing speed, fabric structure, screen mesh, and scrape pulp device Foot Inch, the predicted amount of paste at 15% error can be controlled within.

Domestic printing machine development and manufacturing have made some progress, Huangshi, Hubei, Shanghai, Zhejiang Xinchang manufacturers such as cooperation with foreign countries and the introduction of technology, both development and production of advanced flat screen or rotary screen Printing Equipment . But compared with foreign equipment, the functionality, performance and stability, there are still some gaps.

Digital Printing System

Digital printing can not only save Plate Processes, reduce costs, but also to save printing digital pattern, which makes the printing methods become more attractive, research in this area in the ascendant. Currently, the most promising fabric Ink jet Printing paper used Print

by: gaga

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