2.84mm Flexo Polymer Printing CTP Plate

                                                                       Digital Solvent Flexo Printing Plate

 

 Flexible resin photosensitive plates need to go through processes such as back exposure, main exposure, plate washing, drying, and post-processing after film exposure or CTP plate making machine to produce printable printing plates.
1. Exposure unit
(1) Back exposure
The plate support film is facing upwards, the protective film is facing downwards, and it is laid flat in the exposure drawer to receive exposure. UV-A light passes through the supporting film to polymerize the photosensitive resin, mainly used to establish the plate base of the printing plate as the basis for relief.
The back exposure time is determined by testing.
(2) Main exposure
The plate support film is laid down in the exposure drawer, the protective film is removed, and the negative film carrying graphics and text is laid on the photosensitive resin. Then, a vacuum film is attached, and the vacuum pump is turned on to evacuate the film and make it tightly adhere to the photosensitive resin. UV-A light passes through the vacuum film and the graphics and text on the film, causing the photosensitive resin to crosslink and form an implicit insoluble relief pattern. During this process, the density of the film and the degree of vacuum extraction are key factors. The former is used to ensure that the non graphic parts completely block ultraviolet light, while the latter can ensure that the film is tightly adhered to the photosensitive resin, reducing the residual air that produces halo during exposure and affects the plate making effect.
The main exposure time is determined by testing.
Flexographic imaging plate making
Traditional flexographic plate making relies on film exposure imaging, while common flexographic CTP direct plate making uses laser ablation black film imaging.
2. Rinse unit
After the resin plate is printed, it needs to be rinsed. Rinsing is the process of dissolving photosensitive resin that has not been exposed to ultraviolet radiation or crosslinked during the printing process in a rinsing solvent. The photosensitive resin that has been crosslinked by ultraviolet radiation forms a relief and produces a printing plate.
To produce high-quality flexographic printing plates, automated plate washing equipment must have the following functions:
① The flushing solvent is generally a mixture of n-butanol and tetrachloroethylene, with a specific gravity of about 1.418, and the flushing temperature is controlled at 20 ℃. The temperature varies in different regions, and it is required to maintain a constant temperature for washing the solvent.
② The speed and washing time of the printing plate can be set to adapt to the processing of various types of plates. The height of the brush can be adjusted to adapt to brushing different thicknesses of plates.
③ It can sense and calculate the length of the plate, automatically control the movement of the brush, and circulate the rinsing solution.
④ The hardness of the brush should not be too soft to wash the plate cleanly, nor too hard to damage the plate.
⑤ It can automatically preheat and dry, usually at 60 ℃. The printing plate should be taken out without washing solution.
It has a fresh liquid supplement function to ensure the cleanliness of the flexible printing plate substrate and the clarity of graphic and textual details.
The flushing equipment is well sealed and has a negative pressure exhaust function for volatile gases to ensure a good environment.

 

  Normal flexo plate format:

762x1016mm(30x40in)

1067x1524mm(42x60in)

1270x2032mm(50x80in)

    

EcooGraphix Flexo CTP Strength:

 

1)Easy to use :

After placing plate, the only step you need to do is to press a button to finish the plate loading within seconds.

2)Automatic Focusing :The machine can be used for different thickness plate from 0.15mm to 1.7mm. Dynamic autofocus system keeps accurate focus constantly to ensure sharp dot.

3)Auto balance system of drum takes no more than 5 seconds to adjust drum balance block to a position, make the drum stable in high speed rotation.

4)Auto switch of laser channel: When any laser channels breaks down, laser channel auto switch system can continue output through the longest consecutive channel that remains working to ensure non-stop production.

5)Linear motor : More accurate, more simple and more reliable.

6)Long lifetime and warranty of spare parts: Laser Lifetime:>10000h

Model	FL-600SM FL-600EM
Laser Channel	32CH	16CH
Output Speed	2.5 m2/h	1.25 m2/h
Max.Breadth	26'' x 17''/680mm x430mm
Min. Breadth	100mmx100mm
Plate Type	Heat corrosive film, Digital relief flexo plate(water-wash) ,digital flexo plate(solvent-wash),steel based digital plate(water/alcohol washable)
Plate Thickness	0.15mm - 1.7mm
Application	Label and trademark
Resolutions	4000dpi
Plate Loading	Manual load and unload
Interface	USB2.0
Focus Adjust	Fixed focus
Laser Power	High-power semiconductor laser diode
Device Size (WxDxH)mm	1087x770x1000
Net Weight	400KG
Power	Single phase: 220V/50HZ, 60HZ/3KW
Environment	Recommended temperature: 18-30℃ humidity: 10%- 80%

 

 

Model	VULCAN-5080S	VULCAN-5080F
Exposing Mothod	External Drum
Imaging System	1064nm filber laser device (H256 heads)
Throughput	3 sqm/hour at 5080 dpi	5 sqm/hour at 5080 dpi
	50*80 inch, takes 45 minutes	50*80 inch, takes 30 minutes
Exposing Size	Max.size 1270*2032mm, min. Size 200*200mm
Media Type	Dry ablation film, Digital water washing letterpress plate. Digital water washing flexo plate, Digital solvent washing flexo plate
Plate Thickness	0.140mm to 6.35mm
Resolution	5080DPI (compatible with 2540DPI) , can extend to support 10160DPI
Plate Loading	Automatic/Manual plate loading
Net Weight	2500kg
Machine Size (WxLxH)mm	2970*1705*1537mm (L*W*H)
Power Supply	Three phase voltage: 380V, Max. Power (peak value) 16 kw
Operation Environment	recommended:15-30℃, Max.21-25℃, humidity:40-70%

 

5080 Computer To Flexo Plate system adopts the latest development of H256 laser head technology.

A full size of 50 inch×80 inch plate output only needs 30 minutes.

 

Digital Flexo CTP Plate making process
First, use a computer to create the graphics, images, text, etc. to be engraved.

Then special computer imaging software will convert the graphic information of the original into executable relevant parameter data such as depth, size and shape for modulation of the laser beam.

The control system then controls the movement of the laser beam according to the command. The laser acts on the surface of the material and uses the power of the laser to ablate graphic information into dots.

After the ablation, the dot residues are processed by a special device.

 

Advantages of laser direct engraving of flexo printing plates
(1) There is no need to dry and rinse, which saves a lot of money and reduces costs.
(2) Save plate making time
(3) The engraving quality is stable and easy to control, and there will be no printing plate expansion without plate washing.
(4) Eliminating a large amount of auxiliary equipment and reducing investment
(5) The engraving dots are sharper and steeper than traditional dots, and the dots are round. High contrast and small dot increase rate.
(6) The entire work process is fully digitalized, and the industrial process is greatly simplified. Quality control is also easier to achieve.

 

Other Equipment needed for flexo plate making:

 

Flexo Plate Back Film Exposing machine

 

Flexo Plate Washing Machine

 

Flexo Plate Light Treatment Dring Machine

 

Flex Plate All In One Processor

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