Calendering varnish is a kind of Water based varnish , general to say , it has better glossiness , anti-abrasion , flatness than normal Water based varnish , so Calendering varnish should be the highest glossiness and flatness from Water based varnish. Normally to say ,the degree of glossiness should be from 40~60 after coating process , Finishing product will reach glossiness from 80~90 after calendaring process.
Generally to speak , The ability of Rub-resistance should be from 200 to 500 times (4 pounds) , it’s better than normal Water based varnish , we also have High Rub-resistance calendering varnish CH-30701 which one we usually apply to Long-distance transport , such as Tissue box , Rub-resistance and Glossiness are very important for related Product.
Regarding the viscosity , it will be higher than normal Water based varnish since it need apply to calendering process , all in all , The results of calendering should be better if offer thicker coating on the paper . For the in-line printing machine, we suggest CH-30207 for applying to such thinner coating, high viscosity can help varnish not to be absorb too much by paper , We need select right viscosity for in-line application(75 sec Ford 4 cup) .
Press cylinder condition：Pressure ：150-200㎏/㎝2
Temperature ：95-110℃
Length of late： Longer then 10 Meter
The best Calendering temperature is 100℃ at least
Pressure not less than 125 ㎏/㎝2
Average coating thickness : 4~6 g/m2
In the case of rough paper , please thicker the coating layer .
Specification：
Composition ：Emulsion of polyacrylate
Viscosity（Ford cup#4/25℃） ：50 ± 5 sec.
Appearance ：Milky yellow liquid
Solvent ：Water
Solid content（％） ：45 ± 3
pH ：8.5 ± 0.5
Odor ：Slight ammonia odor
End Use：
1 .Water-base overprinting varnish for endless calender
2 . Varnish for paper board
Application ＆ Testing
1 .Process：
CH-30209H =＞Varnish roller coater on printing machine
＞Use short wave inferred light =＞Press cylinder
Press cylinder condition：Pressure ：150-200㎏/㎝2
Temperature ：95-110℃
Length of late ：Longer then 10 Meter
2 .Film Special property：
（1）Good gloss （4）Abrasion resistance
（2）Mold releasing （5）Adhesion with printing ink
（3）Fast drying （6）Non-yellowing
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![European standard EN 71 specifies safety requirements for toys.[1] Compliance with the standard is legally required for all toys sold in the European Union. EN 71-3: Specification for migration of certain elements.](http://im01.itaiwantrade.com/f31c6e79-75b4-49fd-9750-d057b9077c9f/EN71-100x100.png "EN71")
