| The following guideline compares the components of conventional sheetfed offset printing ink used on coated papers with ink formulated for YUPO Synthetic Papers. This data is provided as a general guideline only.
| Component |
Coated Paper |
YUPO Papers |
| Pigment |
20% |
20% |
| Resin |
30% |
25 - 30% |
| Drying (Linseed) Oil |
15 - 20% |
45 - 50% |
| Mineral Oil |
27 - 32% |
0% |
| Wax |
2% |
2% |
| Drier |
1% |
3% |
- Solvents should not exceed 3%. Excessive solvent will penetrate YUPO and cause distortion.
- Phenolic resin must be highly soluble to compensate for lack of mineral oil.
- Linseed oil should have a very low viscosity and be mixed with chinawood oil to accelerate drying. Variations in pigment content may require varying proportions of resin and drying oils. Maintain ink manufacturer's recommended resin: drying oils ratio.
- Slow drying vegetable oils, such as soybean, should not be used in the ink formulation of inks. Inks formulated with these oils take longer to dry, compound the risk of ink setoff in the delivered lift, and increase the likelihood of gas ghosting on two-sided printing.
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