Fast, presensitized polymer screen emulsion. Processing under yellow light is recommended because of the high light sensitivity.FOTECOAT 1838 is magenta, the stencils allow excellent see-through- Solids content 38%For long runs a small quantity of Diazo powder sensitizer can be added directly to the FOTECOAT 1838 1 sachet D2 for 4,5kg or 1 sachet D81 for 1,0 kg FOTECOAT 1838. Use only this Diazo sensitizer for direct addition without dissolving it firstly in water.The Diazo sensitizer is added to the FOTECOAT 1838 and comes in form of a sachet. However, FOTECOAT 1838 can be used without the addition of the DiazoAPPLICATION ADVANTAGES- Can be coated on all types of meshes; on white mesh the resolution/definition is satisfactory- High resolution coupled with excellent stencil edge sharpness- Can be decoated with the usual products- The chemical hardening for the production of a more resistant or permanent stencil is possible with FOTECHEM 2100 or 2110- To speed-up the wash out for thick stencils after exposure an immersion for 5-15 min. in a water bath is possibleMANUAL AND MACHINE COATING- Manually the ready to use emulsion can be coated 1/1 or 1/2 wet in wet. On coarse meshes 1/1 coating is possible- The viscosity is ideal for machine coating. If necessary the emulsion can be diluted with water without losing light sensitivity- To produce a flatter stencil profile with a lower Rz-value (to improve print edge quality) additional coats can be added after an intermediate drying cycle. After each such cycle the stencil thickness increases by 1-2 µm and the Rz-value becomes lower- After coating pour the emulsion from the coating trough into an empty can so that it can degas; this way air bubbles can be avoided in the stencil which results in less pin-holingSTENCIL QUALITY- Excellent mesh bridging. This causes an excellent stencil edge together with medium resolution at short exposure times. A perfect stencil can be achieved on dyed mesh if the correct coating and drying technique is applied. In combination with white mesh the resolution suffers slightly- The cleaning of plastisols should be done with white spirit and not with stronger solvents View Data Sheet
