Description of content: Deli speed connection flexo coating, the best choice for modern coating.
Content: The latest development of packaging and printing products. The printed product is a work of art. It is no longer printed in a form of offset printing. After gravure printing, offset printing, flexo printing, and offset printing are added online After light, hot stamping, offset printing and online polishing, etc. Moreover, not only paper is used in printed matter, but substrates of printed matter such as grating sheet, laser film, laser paper of light cylinder, etc. As early as 1986, Heidelberg at the DRUPA exhibition in Drupa, has shown the configuration of the on-line coating group on the offset press. The early glazing group was a two-roller water-based glazing system, which was dried with infrared rays and hot air. Today, the glazing group has developed flexographic printing, box coating systems, infrared and hot air drying or ultraviolet drying systems. Manroland printing machine manufacturers shoot files with the Eltosh drying system. Heidelberg printing machine manufacturers cooperate best with the IST drying system. Other printing machine manufacturer's drying systems are optional for customers. On-line coating system Most printing machine manufacturers use Tresu Group.
Tresu Group's newly designed (Modular Box Coating System) MCS, with Heidelberg users, if you do not configure an online coating group when you buy the machine, if you want to develop online coating printing, there will be automatic washing after 96 The tape system can be modified with this system (Modular Coating System). This is a great news for the printing house, users do not need to spend a lot of money to buy an online coating offset printing press. We can study in depth that this modular box coating system is retrofitted in several printing groups.
The offset printing machine is equipped with an on-line coating group. For this coating group, I recommend using a box coating system. The advantages of the box are as follows:
â— Gloss coating average
â— Glossiness increased by 15-20% and the reflective surface is average
â— Save 20-30% of varnish
â— Increase printing speed from 1,500 to 2,500 sheets per hour
â— Prints can be partially polished
â— Special printing such as printing pearl oil, gold oil, silver oil, white ink, etc.
The box coating system is originally a flexographic printing. Personally recommended anilox rollers are as follows:
â— 90 L / cm, 15cm3 / m2 standard anilox roll high gloss varnish (3-5.5 g / m2)
â— 120 L / cm, 10cm3 / m2 standard anilox roller gloss low oil use (2-2.5 g / m2)
â— 160 L / cm, 7.3cm3 / m2 tri-helical spiral twill anilox roller pearl oil, gold oil, silver oil, white ink, etc. (1.5-2 g / m2)
There are many UV drying systems on the market that are very good. I will talk about the latest design technology of IST drying system and Eltosh drying system this time:
The IST drying system is equipped with:
â— CK 200 W / cm high-pressure mercury lamp because in the 200-280nm region of UVC, the energy produced by the 200W / cm high-pressure mercury lamp is double that of the 120W / cm high-pressure mercury lamp.
â— The URS reflector is large under the same power conditions, and the ultraviolet energy reaching the surface of the substrate increases by about 30%.
â— Electronic power control of ELC lamp tube has no active peak, and has higher power conversion rate and smooth load distribution.
â— DCP ultraviolet lamp is completely suitable for curing UV white ink.
The Eltosh drying system is equipped with:
â— White Cure UV white ink special lamp
â— Two 120W / cm high-pressure mercury lamps in the Twin Ray UV twin lamp group. The high-pressure mercury lamps in the middle of the printing group and the printing group are particularly good for plastic sheets.
Purchasing an offset printing machine, let us think about the following points:
â— The company's workshop management system
â— Market demand
â— Development of supporting technology for printing presses
â— Ink roller balance temperature system
â— Automatic plate installation system
â— Automatic tape washing system
â— Online coating group
â— Anilox roller
â— (IR) Infrared drying system
â— (UV) ultraviolet drying system
â—? W / cm high pressure mercury lamp
â— Water cooling system will not remove the temperature and humidity of the workshop, saving energy
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