General questions for water-based inks.
What are the advantages and disadvantages of using water-based inks?
Water-based inks tend to have a softer print finish and hand feel. Most often, it will mimic the texture of the substrate being use.
It can be cured at low temperatures and can be air-dried, which means screens are prone to clogging.
Water-based prints don't do well with overnight water soaking, which makes it less compatible with dry-cleaning.
It is easier to clean with just water and soap compared to plastisol inks.
What are the basic facts to remember about Keenworth water-based inks?
Always mix water-based inks before use to get its true consistency.
Average curing temperatures: 110ºC to 130ºC
Average curing time: 5 - 10 seconds
Pigment type: Keentex PRC
Average mesh count: 40T - 120T
What is the shelf-life for Keenworth water-based inks?
Keenworth water-based inks typically have at most a 2-year shelf-life with proper storage and handling.
All inks, if not properly stored and sealed properly can cause its shelf-life to decrease and will hasten spoilage.
Avoid cross-contamination, which means, it is important to use clean materials for mixing of inks.
What can I use to reduce viscosity for water-based inks?
To reduce viscosity, it is recommended to add 1%-2% of Reducer CT into the mixture.
Some might add binder but overtime this may cause the print finish some issues with tack and gelling of the ink.
What causes a tacky print?
A tacky print finish may cause more damage especially when prints get stuck together or if it's in its packaging. Most of the time, high humidity and trapped moisture causes a tacky print finish.
1. Give the water-based ink enough time to cool down after curing. Do not immediately fold or stack substrates on top of each other.
2. Extremely high humidity in the printing area may cause prints to 'sweat' and may also contribute to the tacky print.
3. Avoid over-coating the last print to achieve a nice glossy-print. We recommend a maximum of 3-5 strokes per coating.
How can I improve humidity and ventilation?
Adding ceiling fans will effectively circulate the air around to create a draft throughout the room. Installing windows will also help if in case the room or area does not have one.
A room with high humidity would feel moist and sticky. Another symptom of an area high in humidity would be growth of mold and mildew.