What is aqueous (AQ) coating?
Unlike UV coating and varnish, AQ coating is water-based and is known as the “default” coating for printing and packaging. It features fast-drying capabilities when used during the printing process, which makes it possible to achieve different appearances, allowing various application methods.
In addition to this versatility, AQ coating is known for being environmentally friendly with its non-toxic, water-based solvent that makes it perfect for applications such as:
Benefits of aqueous coating
Non-toxic & environmentally friendly
The treated paper is easily recyclable and does not produce harmful by-products. After applying the aqueous coating, there is minimum solid waste, and the cleaning process does not require toxic cleaning agents.
Versatile
It is a no-hassle solution when additional finishing is necessary to the print and works well with various printing processes. The coating also makes it very easy to write and print over the coating for more variety in finishes.
Cost-effective
This water-based coating is mainly used in line with the printing process, delivering significant cost savings.
Durable and long-lasting
By sealing the ink against exposure to air, the coating maintains the fidelity of metallic inks. Aqueous coating is also less susceptible to yellowing, making it a better alternative to varnish.
Pros and cons of aqueous coating process
Pros:
- Simplified process
- Multipurpose/versatile method
- Durable designs
- Efficiency and speed
Cons:
- High Setup Cost
- More color variants, more costs
- Solid color only
Other available printing finishes
Quick reference comparison chart of 3 printing processes
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Types of AQ Coatings
- As mentioned previously, aqueous coatings are available in matte, satin or gloss finishes, but other unique coating types are also available to fit your printing needs! Let’s have a look.
Gloss: A gloss aqueous coating is ideal if you’re looking for a less showy and more muted finish. As mentioned above, UV coating or film laminates are better options if you are looking for a flashier shine.
Dry erase: An alternative to laminate, dry-erase AQ coating achieves a high gloss effect at a low price.
Satin: With an appearance between gloss and matte, a satin aqueous coating offers medium shine and excellent scuff resistance.
Matte: A matte aqueous coating offers minimal shine and depth but a high degree of color intensity.
Soft Touch: Soft touch aqueous coating creates a velvety texture with a soft appearance compared to a glossy finish. Similar to matte coating, it gives a subtle finish with little to no shine.
More about AQ
- Although AQ coating provides several benefits, the chances of chemical burning with aqueous coating and UV coating are higher than other finishes such as varnish.
The solvent resistance of the aqueous coating is lower than that of UV coating and thermal lamination.
Nevertheless, AQ coating is still the most popular choice for print finish options thanks to its reliable and brilliant results.