DX-A4 Exposure Machine for Photopolymer Pad Printing Plate Pattern Making

Machine Data Sheet

Product	Exposure Machine for Photopolymer Pad Printing Plate
Brand	DSTAR
Model	DX-A4
Exposure size	400*250mm
Exposure time	0-9999 secs
Washing time	0-9999 secs
Drying time	0-9999 secs
Power	AC220V/50Hz/200W
N.W	50KGS
Machine size	L50*W40*H60cm
Warranty	One Year
Packing	Wooden Case
Lead time	10-15days

Operation Steps

1. Back Exposure (Establishing the Base)

This is the first step in plate making. Lay the resin plate flat in the exposure unit (usually with the polyester base facing down and the protective film removed) for back exposure.

Using an Exposure Machine for Photopolymer Pad Printing Plate helps achieve the desired results efficiently.

• Purpose: To cure the photosensitive resin at the bottom of the plate, establishing the base thickness of the printing plate, and also determining the height of the image relief.
• Parameters: Set the time according to the required relief depth and plate thickness, usually ranging from a few seconds to a few minutes.

Understanding the capabilities of the Exposure Machine for Photopolymer Pad Printing Plate is vital for success.

2. Main Exposure (Image Formation)

After back exposure is completed, place the negative film (emulsion side down, in close contact with the resin plate) on the plate.

• Operation Points: Start the vacuum system on the equipment, and confirm through the vacuum gauge that the film and the plate are completely sealed with no air residue, to ensure the clarity and sharpness of the exposed lines.
• Purpose: Ultraviolet light penetrates the transparent part of the film, causing the resin in the image area to undergo a polymerization reaction and harden.
• Parameters: Corresponds to the exposure time on the control panel. Too long a time will cause dot gain and blurring of small characters; too short a time will make the image not firm and easy to be washed away.

The Exposure Machine for Photopolymer Pad Printing Plate enhances the clarity of your prints.

3. Washing (Development)

After the main exposure is completed, put the printing plate into the washing machine and rinse it with a specific ratio of dilute alkaline solution (such as a solution with a pH value of 8.5 – 9.2).

• Purpose: To dissolve and wash away the resin in the unexposed area, so that the hardened image part forms a relief.
• Parameters: Corresponds to the washing time and solution temperature on the control panel.
  • Temperature: Generally controlled at around 35℃ – 50℃. If the water temperature is too low, the dissolving power is insufficient; if it is too high, it is easy to cause excessive expansion of the plate or deformation of the image.
  • Time: Set according to the depth and size of the image on the plate and the brushing strength of the washing machine, until the image is completely displayed and there is no sticky feeling of unexposed areas.

4. Drying (Dehydration and Shaping)

The washed printing plate contains a large amount of water and needs to be dried.

• Purpose: To remove the water inside the printing plate, restore the plate to its original size and thickness, and at the same time make the plate surface completely dry.
• Parameters: Corresponds to the drying time on the control panel. Usually, the temperature is set between 50℃ – 80℃, and the time generally ranges from 15 minutes to 2 hours, depending on the thickness of the plate. Too high a temperature or too long a time will easily cause the plate to become brittle.

5. Post Exposure (Thorough Curing)

The effectiveness of the Exposure Machine for Photopolymer Pad Printing Plate depends on proper usage.

The dried printing plate will finally undergo a second exposure, that is, post exposure.

• Purpose: To thoroughly and completely cure the resin on the surface of the printing plate, improve the printing resistance and wear resistance of the printing plate, and at the same time eliminate the stickiness of the plate surface.
• Parameters: The post exposure time is generally shorter than the main exposure time, and is set according to the type and requirements of the plate.
  

The Exposure Machine for Photopolymer Pad Printing Plate is crucial for achieving high-quality results.

Due to differences in resin plate brands and models (plate thickness, hardness) and platemaking machines (light source intensity), specific parameters (time, temperature) will vary significantly.

Sample Display

Efficient drying is crucial when using the Exposure Machine for Photopolymer Pad Printing Plate.

Post exposure with the Exposure Machine for Photopolymer Pad Printing Plate ensures optimal curing.

Ensure uniform drying with the Exposure Machine for Photopolymer Pad Printing Plate to avoid defects.

Check the performance of your Exposure Machine for Photopolymer Pad Printing Plate regularly to maintain quality.

The advanced features of the Exposure Machine for Photopolymer Pad Printing Plate can enhance productivity.

Different brands of the Exposure Machine for Photopolymer Pad Printing Plate require specific settings.

When selecting an Exposure Machine for Photopolymer Pad Printing Plate, consider its specifications carefully.

Machine Video