Spray Kontakt Transparent 21
KONTAKT CHEMIE Transparent 21 makes papers with circuit diagrams, tables, etc. transparent and therefore permeable to visible light and UV light.
KONTAKT CHEMIE Transparent 21 makes paper documents translucent, allowing them to be used directly for the production of printed circuits with the positive photo resist KONTAKT CHEMIE Positive 20. The transparent spray therefore replaces time-consuming repro work.
- Appearance Colourless liquid
- Odour Solvent smell
- Density ASTM D 891 0,785 g / cm3
- Flash point ASTM D 56 < 0 °C (flammable)
- Drying time approx. 20 min
To produce transparent paper documents, spray these generously with KONTAKT CHEMIE Transparent 21. Transparency is retained at room temperature for 20 - 30 minutes and must then be refreshed.
When producing printed circuits KONTAKT CHEMIE Transparent 21 can be sprayed directly onto the plate coated with the photocopy lacquer KONTAKT CHEMIE Positive 20. Then place the circuit document with the printed side and press down gently. Remove air bubbles by smoothing down. Then process (weighting down with a glass plate can be omitted).
To develop the processed exposed board Transparent 21 should be removed under running water.