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Product description :
GB907B water based preprinted high abrasion resistance anti-adhesion varnish is suitable for flexography printing machine, independent varnishing machine, gravure printing machine. It is also suitable for high-speed on line packing preprinted varnishing, such as beer carton, mill carton, fruit carton. Anti-sticky, high-temperature resistance, scratch proof, wear resistance, smoothness passing through paper board production line. Moreover, it have anti-sticky functions in long time high temperature closed environment.
Technology parameter:
Appearance | micro-milky |
Viscosity | 10--18S (25°C, 4 # Zahn cup ) |
Solid contents | (40±3)% |
Rub resistance | ≥400 times(4 lb weight ,face to face) |
Gloss | 45-55(depending on paper and glazing machine) |
High- temperature resistance | about 180°C |
PH value | 8.0-9.0 |
Instructions:1.Stir must be fully before use, maintain internal composition uniformly. After opening, storage should be stamped seal, stop impurity from polluting varnish and effective solvent volatilization in varnish, prevent affecting varnish performance.2. According to coating machine and climate, add appropriate thinner (water) or mix liquid of alcohol with water (2:1) dilute. In order to avoid loss of gloss and keep wearing resistance, depend on season, roller coating varnishing can dilute about 10% thinner. During use , when varnish viscosity is too high, appropriate thinner should be added to adjust right viscosity.
3.Varnishing amount should depend on paper quality, generally:3-6kg/m2 on coating and flexography printing machine, 2-5 kg/m2 on gravure printing machine.
Note:1.Varnishing amount should take paper thinkness as principle. If dilution is excessive, it will affect adhesion flexibility and degree of cover; On the contrary, dilution is insufficient, it will result in varnish coating too thick, poor liquidity.2.Drying method can adopt infrared, hot air, or heat pipe heating and drying.3.Because water based varnish is difficult to wash after drying, so it must keep roller in state of moving and varnish cycle. Before shutdown, roller must be washed, prevent dry.4.This product is water based varnish. When laminating, please try to choose neutral or week alkali (PH≤11) adhesives. Please strictly control amount of glue, prevent excessive glue penetrate paper from anti sticky.5.Regularly wash varnishing equipment and store varnish tank. Prevent impurity and precipitate in tank dissolve in varnish from affecting varnish quality.Storage environment: sealed and stored in dark and dry and cool place; store temperature is 5-30°C.Shelf life: six month under normal circumstances