PLUS 8050

A blue/green, ultra tough, universal resistant high solids screen printing emulsion for extreme applications.

PLUS 8050

PLUS 8050 is a very high quality, high solids emulsion that is resistant to both water and solvent based inks. PLUS 8050 will give a slightly higher print quality than PLUS 8000.

Features

  • PLUS 8050 is designed to give the highest quality printing combined with the maximum durability. PLUS 8050 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. The product is capable of achieving very high resolution and image definition on fine polyester and stainless steel meshes. In addition, it has a wide processing latitude and is removable after printing if required.
  • PLUS 8050 is resistant to solvent and UV curing inks.

Benefits

  • 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.

Applications

  • PLUS 8050 has been specifically formulated for ultra high quality applications in cleanroom production areas. Very high dispersion quality, and special filtration during manufacture, ensures no particles or pinholes during stencil production. PLUS 8050 has higher print durability than standard PLUS emulsions, which makes it ideal for other applications such as textile and ceramic printing.

Additional Information

WORKING INSTRUCTIONS & SAFE HANDLING

Sensitising of Emulsion

Note:  New ‘direct addition’ of Diazo

Handle PLUS 8050 under yellow fluorescent tubes or low wattage Tungsten light.  PLUS 8050 is supplied as a two pack kit comprising the emulsion and powder sensitiser in a sachet.

  1. Prior to sensitising read the Safety Data Sheet.  Mix the two components as follows:
  2. Cut the powder diazo sachet open using a pair of scissors (DO NOT OPEN WITH TEETH).
  3. Add the powder diazo sensitiser DIRECTLY to the emulsion.(DO NOT DISSOLVE THE SENSITISER IN WATER OR ADD ADDITIONAL WATER TO THE EMULSION).
  4. Stir thoroughly for approximately 2-3 minutes to ensure emulsion is sensitised throughout. Allow the emulsion to de-gas for 15 minutes before use.

Mesh Preparation

Unused polyester         Autoprep Gel and Universal Mesh Prep or Auto Degreaser Concentrate

Used polyester             Universal Mesh Prep or Auto Degreaser Concentrate

Stainless Steel             Universal Mesh Prep or Auto Degreaser Concentrate

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:

  1. Apply 2 coats to the print of the screen.
  2. Apply 2 coats to squeegee side.
  3. 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).
  4. 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

Exposure

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)*

 

LampDistance012345678910
2kw metal halide 120 cm                      
3kw metal halide 120 cm                      
5kw metal halide 120 cm                      
UV fluorescent tubes 10 cm                      

 

*           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.

Stencil Removal

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

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