What is Aqueous Coating for Printing and Packaging?

In the printing and packaging industries, aqueous coating is typically the standard coating method. This is because AQ makes it possible to create unique package designs. Such kind of coating that is put to the press sheet in the printing and packaging industries is called an aqueous coating. This type of coating is water-based. In addition to providing protection against scratches, sticky fingers, scuffs, and other defects that might potentially distract from the vibrant look of the completed product, this varnish method gives the impression that the finished product "jump" off the page.

What is Aqueous Coating in Printing?

The aqueous coating, often known as AQ, is a form of varnish that is clear and based on water. It is applied to a printed object while the printing process is being carried out. In the printing and packaging industries, aqueous coating is often used as the standard coating process because it dries rapidly, is resistant to fingerprints, is helpful to the environment, and facilitates the creation of unique package designs. Aqueous Coating (AQ) may seem like something that NASA employs to get their shuttles ready for flight, but in fact, its main job is to safeguard your items as they have the potential to fly off their shelves.

Different Types of Aqueous Coatings

1- Gloss Coating

It's possible that a gloss finish is just what you're looking for if you want your product to have a more understated impression while still being protected. It is possible that UV or glossy coatings are more appropriate for anything that seems to have a more shimmering appearance when it is exposed to light. The coating that you should use if you want to make your product stand out on the shelf is this one.

2- Matte Coating

A matte coating, which is the opposite of a gloss coating, reduces the amount of glossiness and makes it possible for colors to display their brilliant brightness more. When it comes to designs that are fashionable and minimalist, this might be an excellent choice.  

3- Satin Coating

Satin coatings are not as eye-catching as other kinds of glossy coatings; yet, they still protect your product from fingerprints, scuffs, and other imperfections that might potentially take away from its beauty. In situations when you want to reap the advantages of the coating while having as little of an effect as possible on the print, this is an excellent option to consider. 

4- Soft Touch Coating

It is only recommended that you use this coating in situations when you want to enhance the quality of your packaging to a higher level. Because of the unique features that it has, this coating not only serves to safeguard the package, but it also seems to have a more pleasant texture to the touch. 

5- Dry Erase Coating

Another option to laminate that is more cost-effective offers a gloss impression that is superior to that of other coatings. Although the Dry Erase Coating option is not as strong as the full gloss option, it is still capable of doing an excellent job at a more affordable price.

Comparison of Different Types of Aqueous Coatings

Benefits of Aqueous Coating

Aqueous coating is widely used in the printing industry for several reasons. It is a water-based coating that offers multiple benefits, making it a popular choice over other types of coatings, like UV or solvent-based coatings.

Environmental Benefits

The main reason why aqueous coatings are the best choice is because it is water based coating. Water-based coatings have less volatile organic compounds (VOCs) than any other types of coatings. VOCs are dangerous for both human health and environment, that's why using a low- or no-VOC aqueous coating is the top priority. This makes aqueous coatings a safer choice for workers and the environment.

Cost-Effective

Aqueous coatings are often less expensive than other types of coatings, such as UV coatings, because they do not require expensive curing equipment. Aqueous coatings dry faster, resulting in reduced manufacturing times and lower costs.

Durability and Protection

Aqueous coatings form a protective layer, making printed materials more resistant to wear and tear. It protects the print from scratches, smearing, fingerprints, and dampness. It also extends the life of printed goods and makes them more durable.

Aesthetic Improvement

Aqueous coatings can enhance the appearance of printed items. Depending on the type of aqueous coating used, it can produce a glossy or matte surface, increasing the visual appeal of the material. This is especially relevant for items such as brochures, periodicals, and packaging.

The Process of Aqueous Coating

The aqueous coating method includes putting a thin layer of water-based coating to a printed surface. This protective layer is added after the printing process is completed, providing durability and aesthetic benefits. The process is simple and efficient, ensuring high-quality results.

The aqueous coating process consists of several key steps, each contributing to the final result. Below are the primary stages of the aqueous coating process:

1. Printing

The first step in the aqueous coating process is the printing itself. In this stage, the design is printed onto the surface of the material, typically paper, cardboard, or other substrates. Different types of printing techniques like offset printing, digital printing, or flexographic printing are commonly used. After printing, the material will often appear dull or unfinished, that's why the coating is applied to give it a more polished and protected look.

2. Coating Application

Once the printed material has dried (if necessary), the aqueous coating is applied. This is typically done on a coating machine or as part of a printing press. There are two main methods for applying the aqueous coating:

• Spraying: The coating is sprayed evenly across the printed surface.
• Roller Application: A roller is used to spread the coating across the material in a smooth, even layer.

The coating is applied as a thin layer, enough to protect the print but not too thick to cause uneven drying or a sticky finish. The type of coating applied will depend on the desired effect (glossy or matte).

3. Drying

After the aqueous coating is applied, it needs to dry. The drying process is relatively fast compared to other coating types. The coating typically dries through evaporation, which means the water content evaporates into the air. Some machines use heat or air blowers to speed up the drying process. Since aqueous coatings dry quickly, they help reduce production time and allow for faster processing. This is important in high-volume printing environments where time is a critical factor.

4. Finishing

Once the coating has dried, the final finishing steps begin. This can include cutting the material into its final shape, trimming the edges, or folding it into a specific form. In some cases, additional steps like embossing, die-cutting, or laminating may be performed.

The final material is now ready for distribution or further processing. Whether it’s a book cover, a brochure, or packaging material, the aqueous coating has ensured that the printed piece is visually appealing and protected against wear and tear.

The Use of Aqueous Coating in Printing & Packaging?

Aqueous coating is widely used across various industries, especially in areas that require printed materials with high durability and visual appeal. Some of the most common applications of aqueous coatings include:

1. Packaging

Aqueous coatings are commonly used in custom packaging, especially for products like food, cosmetics, and electronics. Packaging materials benefit from the coating’s protective layer, which helps keep the product safe during transportation and handling. It also improves the overall appearance of the packaging, making it more attractive to consumers.

2. Magazines and Brochures

Printed marketing materials, such as magazines, brochures, and catalogs, often have an aqueous coating applied to give them a glossy or matte finish. This improves the visual appeal and ensures that the prints stay in good condition over time. Aqueous coating also helps prevent ink smudging or fading, keeping the printed content clear and vibrant.

3. Books and Publications

Books, especially hardcover books, benefit from aqueous coatings. The coating helps protect the cover from scratches, fingerprints, and moisture, ensuring the book remains in good condition for longer periods. It can also improve the tactile feel of the book cover, giving it a more professional and polished finish.

4. Business Cards and Stationery

Business cards, letterheads, and other office stationery often have aqueous coating applied to give them a high-quality appearance. This coating helps protect the printed materials from damage while making them look more polished and professional.

5. Labels and Tags

Product labels and tags, which are often exposed to harsh conditions, can benefit from aqueous coating. The coating helps protect the print from smudging, fading, or getting damaged by moisture, making labels more durable in challenging environments.

What is Difference Between Aqueous Coating and UV Coating

Regarding several considerations, below are the key distinctions between the two:

Composition of the Two

Water is the primary ingredient of aqueous coatings. The resins and chemicals that provide the shine and protection you want are mixed with water. However, UV coating requires the use of certain resins that can only be cured by exposure to ultraviolet light. By drying these resins with UV light, we alter their structural composition and cause them to harden.

Difference Table Between Aqueous and UV Coating

This table clearly outlines the key differences between Aqueous and UV coatings, making it easier to compare their features.

Which One is Better: Aqueous or UV Coating?

The choice between Aqueous Coating and UV Coating depends on the specific needs of the project. Each has its advantages, and the "better" option is determined by the goals of the printing job.

Aqueous Coating:

• Eco-friendliness: If your priority is minimizing environmental impact, aqueous coating is often the better choice. It has low VOCs and is water-based, making it more sustainable.
• Cost-effective solutions: If you’re working on a budget, aqueous coating is typically more affordable due to its simpler drying process and lower material costs.
• Softer finishes: If you prefer a matte or satin finish, aqueous coating provides this with a softer texture. It's ideal for projects where a subtle, understated look is desired.
• Less-durable applications: If the project doesn't require heavy protection from scratches and wear, aqueous coating is suitable for standard marketing materials like brochures or flyers.

UV Coating:

• Durability: UV coating is significantly more durable, providing scratch, smudge, and water resistance. It's the go-to option for high-end materials like business cards, catalogs, or packaging that require long-lasting protection.
• Glossy, high-impact finishes: If you’re looking for a high-shine, glossy finish, UV coating is the best option. It creates a visually striking effect and enhances the print's vibrancy.
• Fast drying: UV coating’s instant curing under ultraviolet light is ideal when you need quick turnaround times. It speeds up production, especially for large batches of prints.
• Texture and embossed effects: UV coatings can provide raised, textured finishes that give your prints a more premium and tactile feel, which is often used for luxury products or designs requiring more visual depth.

Which One is Better for Your Project?

• Aqueous Coating: if you are on a budget, need an environmentally friendly option, or require a softer, non-glossy finish.
• UV Coating: if your project requires extra durability, a glossy, high-impact finish, or fast drying times, especially for premium materials.

Conclusion

As you design custom boxes, our packaging dictionary may help you understand industry terminology. This is quite technical information concerning product packaging and printing. As you consider whether aqueous coating is suited for your product, it's normal to have questions. Thank goodness HT Custom Boxes to years of packaging and printing knowledge can help you choose safely. Request a free packaging and printing quotation now. Our team can design, print, and create various packaging options that protect your goods and make them stand out. 

We offer several box designs and sizes for all items. Unsure how to realize your vision? No problem! We have excellent graphic artists and designers who can assist you improve your product design with free design support. 

Contact us now to learn about our rapid turnaround, high-quality, and excellent packaging and printing services.