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KEY-Sliver 9# Photo Emulsion

KEY-Sliver 9#?Photo Emulsion

Product Highlights?

RoHS PASS	Excellent water and solvent resistance	High sensitivity, exposure time
High resolution, fine lines	High solids content and good leveling properties	The film is soft and prevents ink bleeding.

Scope of application

Suitable for high-precision electronic products such as PCB, FPC, mobile phone cover plates, solar cell back electrodes/back aluminum, as well as fine line and dot screen printing.

Product Features

Appearance

Packaging specifications

Emulsion weight

Solid content

Viscosity?

?Type B viscometer, 25℃

Diazo

Blue sticky emulsion

1 kg

900g

45%

9000（mPa·s）

K9（3.0g）

Exposure time

Screen type	Angle	Film thickness	Light source	Lamp distance	Optimal exposure time
250T(Y)	22.5°	15±1 μm	Ultra-high pressure mercury lamp?3 kW	1m	2.5 min

How to use

Sensitization: Dissolve diazonium in approximately 70-100 grams of purified water. Pour the diazonium solution into the photosensitive emulsion and stir thoroughly with a glass rod or wooden stick. Allow bubbles to dissipate completely before use.
Coating: Apply using a high-quality squeegee. Coating characteristics depend on screen size and tension. Determine the number of coating passes required to achieve the desired film thickness based on printing needs. For two or more coating passes, ensure the screen from the previous pass is completely dry before proceeding to the next pass to prevent film peeling.
Drying: Optimal drying temperature is below 40°C. Excessive heat may cause thermal reactions in the photosensitive emulsion, compromising plate quality. Ensure screens are thoroughly dried.
Exposure: Optimal wavelength is 300-400nm. Results are enhanced using ultra-high-pressure mercury lamps or high-pressure gallium-iodine lamps.
Development: Use a high-pressure water gun or spray gun to flush the plate surface at a constant speed.
Drying: After development, first remove surface moisture from the screen, then place it in a drying oven below 40°C for thorough drying. Insufficient drying may cause the emulsion to peel off.
Secondary Exposure: Expose the S-side for 1-2 times the exposure time of the P-side to significantly improve print durability.
Curing: After the screen is completely dry, evenly apply the mixed A+B curing solution to both the P and S sides. After 1-2 minutes, use an air gun to blow through the ink-flow areas. Dry for 20-30 minutes to significantly improve the screen's print durability.

Transportation and storage

Transport using clean trucks, with each package stacked no more than five layers high, and the bottom layer secured with a non-slip pallet to prevent squeezing, deformation, or tipping.

Keep sealed, avoid direct sunlight and high heat.

Unopened and unsensitized, the product has a 12-month shelf life.