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 Photo Emulsion for Flat Screens Printing Plate

 

 

 

 

1.Blue (or milk white) emulsion,38%~39% solid content

2.Produced with imported material,quick development,high resolution,good durability;

3.Applicable scope:  Used for 80~250 meshes;Textile and aqueous printing,such as disperse dyes and pigment paste,as well as active dyes printing

 

 

Performance comparison of water resistance type photo emulsion(A)

Item NO.	Photosensitivity	resolution	acuteness	durability	Exposure latitude	Heat resistance	Mositure resistance
RS201	AAAA	AAA	AAA	AAAA	AAA	AAAA	AAAA
RS1000	AAA	AAAA	AAAA	AAA	AAAA	AAA	AAA
RS1400	AAA	AAAAA	AAAAA	AAAAA	AAA	AAAAA	AAAA
RS1800	AAAA	AAAA	AAAA	AAAA	AAAA	AAAA	AAAA

 

 

 

 

• 1kg per bottle and 15 bottles per carton
• 5kgs per barrel and 4 barrels per carton
• 10kgs per barrel and 2 barrels per carton
• 20kgs per barrel

 The goods can be sent by sea or by air. For internation express,we have a agreement with China Express.

 

 

 

 

 

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 from operating in no opacifying condition).Put 4g-8g photosensitizer into 80ml 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 5~15℃ 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.

Manual 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.