الوصف

Solvent resistant photo emulsion for flat screens

Features and Usages
~1Green(or milk white) aqueous emulsion,solvent resistant,used for **0~**0 meshes
2Quick development,high resolution,good durability,can produce fine pattern
3.Applicable scope: solvent resistant printing of electron,instrument,circuit board,metal,plastic,glass,enamel and leather, suitable for big-scale printing and easy to remove the film

Packing

• ï‚·1kg per bottle and *5 bottles per carton
• ï‚·5kgs per barrel and 4 barrels per carton
• ï‚·*0kgs per barrel and 2 barrels per carton
• ï‚·*0kgs per barrel

~Preparing the sensitized emulsion：It should be operated under a gentle yellow light(Prohibit from operating in no opacifying condition).Put 8g photosensitizer into *0ml clean water, stirring until fully dissolved then put them into 1kg sensitized emulsion and stir clockwise until even.After stirring, there will appear bubble, so you need to put it in a low temperature and dark place for 1~2 hours until the bubble is gone. Then maintain the prepared sensitized emulsion at 5~*5℃ in a constant temperature storage box, the prepared emulsion can be stored for 2 weeks in this condition.

Coating: Automatically coating: The emulsion is directly coated with the auto coating machine on both sides of the screen for 1 time and dried.
Manual coating: Keep the screen upright with one side slantways. Coating the emulsion on both sides of the screen for 1 time and on printing side for one more time then tried. The coated screen should be tried at ****0℃ in an oven with circle wind for ****5 minutes.

Exposure: Maintain the exposure machine cleaning, check the photographic plate before exposure and the manuscript must be closely integrated with the printing plate. Exposure time is relevant with coating machine, light source, power,distance, film thickness, pattern and so on. So the exposure time should be determined after trail.

Development: The exposed screen is immersed in water for **2 minutes at ***0℃，or rinse the printing surface regularly by the tap water with pressure(hydraulic pressure:**4kgs) until the patterns appeared clearly. And then rinse the scraping surface with tap water without pressure to clean the leftover. The washed screen is dried at *0℃ in an oven with circle wind.

Retouching: Retouching the screen according to the situation.

Curing: The retouched screen needed to be exposed for a second time,then cured by brushing a layer of the curing liquid on both surfaces(suggest to absorb the water left in the screen meshes with the hygroscopic machine) and dried in an oven with circle wind or naturally dried.

Storage: One year at ***0℃ in a dark and dry condition.