Silkscreen Silk Screen Printing Photo Emulsion

Product Description

Product name:	Water Resistant Diazo Emulsion
Product model:	MJL-3000B
Product weight:	1KG(Net:900g)
Shelf life:	1 year
Product color:	Blue colloid
Product use:	Silk-printed aluminum frame, wooden frame stretched net fixed mesh, fast bonding

Matters needing attention:
 

1. Preservation of photosensitive gel: Photosensitive gel is best stored at a low temperature of 20 °C and protected from light. Do not store in an environment above 25°C or below 5°C, otherwise chemical and physical changes are likely to occur, affecting normal use. Please store diazonium in the refrigerator at 0-5 ºC.

2. Screen plate degreasing:screen plate before coating photosensitive adhesive should be thoroughly cleaned with special degreasing agent to remove grease and dirt.After full cleaning and drying, high quality screen and high printing resistance can be obtained.
3. Dissolution of photosensitizer: Pure water or pure water should be used to dissolve photosensitizer. If tap water is used directly, the minerals and rust in tap water will react chemically with the photosensitive adhesive, affecting the performance. In severe cases, the colloid will agglomerate and cannot be used normally.
4. Drying oven temperature: the temperature of the drying oven is best with below 40 ºC, 40 ºC, the photosensitive glue easy generation thermal response, lower the solution like sex.The desiccant box should have an exhaust device so that the humidity in the box can be discharged and the net plate can be completely dry.Check whether the temperature inside the
oven is consistent with the set temperature every month.Check whether the temperature inside the oven is consistent with the set temperature every month.

5. Development in winter: if the water temperature of development in winter is too low, it will cause poor development of screen version and decrease of image resolution. Warm water is recommended.

Features:

1. Easy to paint, short drying time, high screen production efficiency
2. Excellent durability, superior solvent    resistance.
3. Easy to reclaim, extended re-use of screen.
4. Waterborne diazo photosensitive adhesive is easy to use and has high bonding strength.

                                         Emulsion viscosity by diluted water volume/%

 

Solvent Resistantance Rating
Solvent	Rating	Solvent	Rating
Water	Fair	Methyl Cellosolve	Good
Toluene	Excellent	Isophoron	Excellent
Acetone	Good	Ethylene Glycol Dimethyl Ether	Good
Ethyl Acetate	Excellent	Isopropyl Alcohol	Excellent
Butylcellosolve	Excellentv	Methyl Ethyl Ketone	Good
N-Methyl Pyrrolidone(NMP)	Poor	Butyl Carbitol Acetate	Excellent
Xylene	Excellent	Terpineol	Excellent
Cyclohexanone	Excellent	Methanol	Fair
24hours swelling/absorption test results

 

Instructions:

1. Wash, degrease and dry screen mesh. Remove grease and foreign contaminants with MSP cleanser.
2. Dissolve provided diazo with 10% water of emulsion volume. Do not use warm water.
3. Coat emulsion slowly in order to prevent air bubbles.
4. Dry coated screen completely before exposure. Drying temperature up to 40°C(104°F).
5. Pour diazo solution into emulsion. Mix it well. Prior to a use, let mixed emulsions settle for one day.
Or for immediate use, filter it with screen mesh 100/cm or higher.   


Widely used in printing, silk screen printing, electronics, lighting and other industries.
 

 

Method of use:
1. Sensitization: dissolve the heavy nitrogen with about 70-100g pure water.Then pour the diazo solution into the photosensitive adhesive and stir with glass rod or wood rod until the bubbles disappear.

2. Coating: apply with high-quality scraper.The characteristics of the coating are related to the size and tension of the screen.Confirm The Times of coating according to the need of printing, so as to obtain the required film thickness.If more than 2 projects are needed, the next project must be carried out after the previous project coating screen plate is completely dry, otherwise, the film will fall off.

3. drying, drying temperature control for best under 40 ºC, and high temperature can make thermal sensitive glue, effect the plate making, screen should be fully dry.

4. Exposure: the best light wave is 300nm to 400nm. If using ultra-high pressure mercury lamp or high-voltage gallium iodide lamp, the effect is better.

5. Development: it is recommended to use high-pressure water gun or spray gun to flush the layout at a constant speed.

6. Dry: after enhancement, first remove the screen surface water, and then into the oven for drying under 40 ºC, the need to fully dry, otherwise the screen glue falling easily.

7. Secondary exposure: the exposure time of S surface is 1-2 times that of P surface, which can greatly improve the printing resistance.

8. hardening: after being screen completely dry, after the blending of A + B hardening liquid evenly coated in the version of the P and S face, 1 to 2 minutes after use air gun to blow through the ink area, dry for 20 to 30 minutes, can significantly improve the network version of resistance rate.