Theoritical of Advantages and Disadvantages of coating starch
Advantages:
Lower total coating cost ( about 15%)
Improved board stiffness (good for packaging)
Better water holding for coatings
Improved holdout of top coat
Disadvantages:
Higher viscosity of coating and lower coating solids (may affect drying load)
Potential decrease in quality of fold (cracking due to stiffness)
Potential poorer wet pick (must use more crosslinker to offset this)
Some benefit of coating starch are :
- High Binding power and comparable with standard SBR latex
- High dry solid coating
- Good water retention
- Improve paper stiffness compared to all-latex
- Optimal run ability at high speed.
- Printability improvement.
- Less downtime.
- Cost Reduction
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