Have you ever picked up a business card, brochure, or product packaging that felt extra smooth and looked incredibly vibrant? Chances are, it was finished with a UV coating. This special finishing technique does more than just add a glossy shine. It provides a protective layer that makes printed materials stand out and last longer.
If you’re curious about what makes UV coating so special and why it might be the right choice for your custom packaging, you’ve come to the right place. Let’s explore everything you need to know about UV coating.
What is UV Coating?
In brief, UV coating, also known as ultraviolet coating, is a liquid-based coating applied to a printed surface. The magic happens when the coated material is exposed to UV light. This instant exposure cures (or hardens) the liquid into a dry, super-glossy, and durable finish.
Unlike traditional finishes that require air-drying, the fast-curing process of UV coating speeds up production times. This instant hardening creates a tough, plastic-like film that protects your printed materials from daily wear and tear.
Why is it called UV Coating?
We know it as UV coating because the technique requires exposure to ultraviolet (UV) light to transform from a liquid into a solid, protective layer. Unlike other coatings that dry through evaporation (like paint), this process uses high-intensity UV radiation to trigger a near-instant chemical reaction.
The UV Coating Process
Wondering about the UV coating process?
Here’s the process!
The liquid formula used for UV coating is a clear compound primarily composed of acrylic polymers, mixed with other chemicals such as polyethylene, calcium carbonate, and kaolinite. Photoinitiators are also added to the UV coating liquid, which are chemical compounds that react when exposed to UV light, causing the mixture to harden almost instantly through a process called photopolymerization. The result? UV coating enhances the package’s appearance and protects it from physical damage like scratches and scuffs.
Types of UV Coating
UV coating offers a wide range of aesthetic and functional possibilities beyond a simple shine, with various types designed to create specific looks and tactile sensations. The different types of finishes can completely alter the perception of a printed product, creating striking visual effects and elegant textures.
The most common types include:
- Gloss UV: This coating has a highly reflective and shiny finish that makes colors appear more professional and eye-catching.
- Matte UV: This finish offers a non-reflective, soft, and satin appearance that exudes sophistication and elegance.
- Flood UV: The liquid covers the entire surface of the packaging for uniform protection and shine.
- Spot UV: Spot UV is selectively applied to specific areas, such as a brand logo or image. This technique creates a striking contrast between glossy and matte surfaces, adding depth and drawing attention to key design elements.
- Soft-Touch UV: This specialized coating creates a velvety, smooth texture, resistant to fingerprints and scuff marks, making it ideal for premium packaging.
- Textured UV: Designed to add tactile effects, textured coatings can replicate various patterns and textures, including those of leather, sandpaper, or embossed designs.
What’s the Difference Between UV Coating and UV Lamination?
The main difference is that UV Coating is a liquid treatment that hardens into a protective layer. On the other hand, UV Lamination is a physical plastic film bonded to the material with a UV-curable adhesive. In other words, UV lamination is the next level of UV coating.
Let’s know the details.
UV Coating
- Visuals: Provides a “wet look” gloss that makes deep colors like black and blue look more vibrant.
- Ideal Projects: High-volume, budget-friendly items like product labels, business cards, or marketing brochures.
UV Lamination
- Visuals: Offers a smooth, professional finish available in gloss, matte, or specialized textures like soft touch.
- Ideal Projects: High-end rigid boxes, shopping bags, or food packaging that requires a barrier against moisture and oil.
Have a look at the comparison table below for a quick guide.
| Feature | UV Coating | UV Lamination |
| Material | Liquid polymer resin | Plastic fil + curable adhesive |
| Process | Liquid is applied and cured instantly | Film is adhered using UV lamps to set the glue |
| Durability | Moderate, scuff and scratch resistant | Superior, high abrasion, and chemical resistance |
| Flexibility | Moderate | Strong |
| Protection | Moisture and scuff protection | Resists water, oil, and tearing |
The Benefits of UV Coating
Yes! UV coating is an excellent choice for many print projects.
Here are some promising benefits of using UV coating.
- Superior Visuals: The high-gloss sheen intensifies colors and adds a premium, eye-catching finish, adding to the superior visuals.
- Enhanced Durability: Creates a durable, hard surface that resists scratches, smudges, and abrasion, prolonging the life of your prints.
- Quick Production Time: The instant-curing process enables faster turnaround times for projects.
- Variety of Finishes: The UV coating machine offers a range of finishes, including gloss, matte, and specialty options such as spot UV for highlighting specific areas.
- Eco-Friendly Process: Since UV coatings are 100% solid and contain no solvents, they release very few VOCs during the curing process.
Limitations of UV Coating
UV coating is powerful for visual impact. However, it has specific technical limitations when paired with certain materials and processes.
Metallic Ink
UV coating might struggle to “stick” to metallic inks. Because metallic inks contain high levels of metal flakes and wax, the liquid UV resin can’t stick on the surface. This leads to flaking, peeling, or “beading” (where the coating pulls away like water on a waxed car).
Thin Paper
UV coating is a heavy, liquid-based treatment. On thin paper (anything under 80lb text or 100gsm), the weight and tension of the coating as it cures under heat/light causes the paper to curl or “bow.” Therefore, this coating works well for thick options, like rigid stock.
Incompatible with Foil Stamping
You generally cannot combine foil stamping with UV coating. The coating creates such a slick, non-porous surface that the foil adhesive has nothing to grab onto.
Extensive Text
While UV coating makes colors pop, it may make heavy blocks of small text harder to read.
Practical Applications of UV Coating
This innovative coating has been trusted by many businesses across industries.
Let’s break it down!
- Cosmetics and Personal Care
UV coating is essential for cosmetic packaging, perfume boxes, and shampoo labels. This technique resists oils and moisture that would dissolve standard ink.
- E-Commerce and Retail Packaging
Retail packaging looks more exclusive with UV coating. Even better, flood UV creates a hard shell that prevents the “scuffing” often seen on e-commerce mailer boxes during transit.
- Food and Bakery
High-gloss UV makes food photography on macaron boxes or chocolate packaging look “delicious” and vibrant.
- Electronics and Tech Products
Electronic boxes with Spot UV can represent the “glass and metal” look of the smartphones or laptops inside.
- Luxury Goods and Premium Products
UV coating creates dimensional effects, making it ideal for high-end watch boxes and luxury jewelry boxes.
- Publishing and Promotional Materials
Magazine covers and promotional presentation boxes use UV to prevent the edges from fraying and to stop fingerprints from showing on dark covers.
Additional Tips on UV Coating Design
If you’re considering applying a UV coating to your design, consider the tips below as well.
To get the most out of your UV coating, consider these design tips:
- Use Spot UV to create contrast and highlight your business logo, image, or specific text against a matte or uncoated background.
- If your design requires folding, please notify your printer so they can score the paper properly beforehand.
- Use it strategically or choose a matte UV option for a smoother, less reflective finish.
- UV coating works best on heavier paper stocks that can withstand the coating and UV light without deteriorating.
The Takeaway
No doubt, UV coating offers a wide range of aesthetic and functional possibilities beyond a simple shine, with various types designed to create specific looks and tactile sensations. The promising benefits of using UV coating include superior visuals, enhanced durability, quick production times, a variety of finishes, and an eco-friendly process.
It’s most commonly used on thicker, heavier paper stocks, such as business cards, postcards, and rigid stock.
So, are you considering UV coating for your next packaging project?
FAQs
What is UV coating?
UV coating, also known as ultraviolet coating, is a liquid-based coating applied to a printed surface.
What are the benefits of using UV coating?
The promising benefits of using UV coating include superior visuals, enhanced durability, quick production times, a variety of finishes, and an eco-friendly process.
What’s the difference between uv coating and uv lamination?
The main difference is that UV Coating is a liquid treatment that hardens into a protective layer. On the other hand, UV Lamination is a physical plastic film bonded to the material with a UV-curable adhesive.
What are the types of UV coating?
The various types of UV coating include gloss UV, matte UV, flood UV, spot UV, soft-touch UV, and textured UV.
