PLUS 8000 is a very high quality, high solids emulsion that is resistant to both water and solvent based inks. PLUS 8000 will give a slightly higher print quality than PLUS 7000.
- PLUS 8000 is designed to give the highest quality printing combined with the maximum durability. PLUS 8000 has a solids content of 38% and is highly resistant to the most aggressive solvent, UV curing and water based inks. It has a wide exposure latitude, is easily decoatable and uses direct addition diazo for maximum consistency of viscosity. When processed correctly on high tension mesh PLUS 8000 gives a very hard stencil, which is particularly recommended for applications where the very highest print durability and print quality is required.
- Please note for applications that require very high flexibility on a low tension/coarse mesh then it is recommended to use PLUS 2000 or PLUS TX.
- Reliability for long run printing with a wide range of solvent based, water based and co-solvent inks, the highest print quality from an emulsion.
- Resistance to a wide range of water, solvent and co-solvent inks makes PLUS 8000 a suitable direct photostencil for most high quality screen printing applications, such as, electronics, ceramics etc.
WORKING INSTRUCTIONS & SAFE HANDLING
Sensitising of Emulsion
Note: New ‘direct addition’ of Diazo
Handle PLUS 8000 under yellow fluorescent tubes or low wattage Tungsten light. PLUS 8000 is supplied as a two pack kit comprising the emulsion and powder sensitiser in a sachet.
- Prior to sensitising read the Safety Data Sheet. Mix the two components as follows:
- Cut the powder diazo sachet open using a pair of scissors (DO NOT OPEN WITH TEETH).
- Add the powder diazo sensitiser DIRECTLY to the emulsion.(DO NOT DISSOLVE THE SENSITISER IN WATER OR ADD ADDITIONAL WATER TO THE EMULSION).
- Stir thoroughly for approximately 2-3 minutes to ensure emulsion is sensitised throughout. Allow the emulsion to de-gas for 15 minutes before use.
For more information on mesh preparation, follow this link: How to Guide – Mesh preparation for PLUS emulsions
Coating & Drying
Stand the screen on edge, angled away from the operator and, using a good quality coating trough, proceed as follows:
- Apply 2 coats to the print of the screen.
- Apply 2 coats to squeegee side.
- The screen should be dried horizontally, squeegee side up and stored under dark or yellow light conditions. Dry the screen at a maximum temperature of 30°C (86°F).
- Additional coatings may be applied to the underside of the screen with intermediate drying.
For more information on coating, follow this link: How to Guide – Coating PLUS emulsions
CORRECT EXPOSURE IS ESSENTIAL FOR OPTIMUM STENCIL PERFORMANCE. UNDEREXPOSURE WILL GIVE A WEAK STENCIL AND REDUCE RESISTANCE.
Remove dust from the surface of the stencil and tape positive in position. Place entire screen in a suitable vacuum frame and expose. We recommend use of the Autotype Exposure Calculator for test exposures to ascertain correct timing. Exposure times below should be used as a guide:-
Exposure Time (minutes)*
* Based on 2+2 coating on 90/cm (230/inch) dyed monofilament polyester mesh.
For more information on exposure, follow this link: How to Guide – Exposing PLUS emulsions
Washout & Drying
Wash out the screen from both sides with a strong spray of water. Continue the washout until all parts of the image appear clean and sharp. Blot off surplus moisture with newsprint or a leather and dry at a maximum temperature of 30°C (86°F).
Spot out blemishes with sensitised emulsion.
Remove ink from the screen, with Autosolve screen cleaner. Apply Autostrip to both sides of the screen. Leave standing for 5 minutes. The stencil can then be removed with a strong water jet or high pressure stripper. If a stain or ghost image still remains, use Autokleen Plus.
For more information on decoating, follow this link: How to Guide – Decoating PLUS emulsions