Manufacturer of RS-201 diazo photo emulsion

Packing

There have 3 packings for choose:

A.1kg/bottle, 15bottles/carton

B. 5kgs/barrel, 4barrels/carton

C. 10kgs/barrel, 2barrels/carton

Washing the screen: Before coating the emulsion, the screen must be cleaned to remove the grease by alkalescent detergent, then washed with water and dried and kept in clean condition.

Preparing the sensitized emulsion：It should be operated under a gentle yellow light(Prohibit operating under highlight). Dissolved 4g sensitizer into 100g water, then mixing and stirring with 1kg photo emulsion. 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 5~15℃ 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.

Coating: Keep the screen upright with one side slantways. Coating the emulsion on printing side or other side for 1 time, after drying, coating the both side of screen for one more time.

Drying: No matter use which coating method, generally, the coating should be divided into two times. Drying after coating one time, drying condition at 35-40℃ in an oven with circle wind for 10-15 minutes. After drying, coating another side and drying as before.(The coating method and times are decided by time, temperature and humidity, according to the actual requirements.)

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(UV-Lamp, Metal-halogen lamp or other), 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 1-2 minutes at 5-30℃，or rinse the printing surface regularly by the tap water with pressure(hydraulic pressure:2-4kgs) 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 40℃ 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 5-30℃ in a dark and dry condition.

Contact Person: Dancy Wu
Tel: +86 0570 8273008
Whatsapp: +86 13777001495
Skype: Diana_wu1986
Wechat: danwu_88