Painting & Coating Industry (PCI) logo Powder coating summit logo
  • Sign In
  • Create Account
  • Sign Out
  • My Account
  • NEWS
  • PRODUCTS
  • MATERIALS
  • TECHNOLOGIES
  • FINISHING
  • RESOURCES
  • EVENTS
  • DIRECTORIES
  • EMAGAZINE
  • CONTACT
cart
facebook twitter linkedin youtube
  • NEWS
  • Latest News
  • Market Trends & Reports
  • Price Alerts
  • Subscribe to eNewsletters
  • Global Top 10/ PCI 25
  • Weekly Featured Article
  • COATLE Word Game
  • PRODUCTS
  • Product News
  • Must See Products and Services
  • MATERIALS
  • Additives
  • Resins/Polymers
  • Pigments
  • Equipment
  • Distributors
  • TECHNOLOGIES
  • Adhesives
  • Architectural Coatings
  • Industrial Coatings
  • Nanotechnology
  • Powder Coatings
  • Solventborne
  • Special Purpose Coatings
  • Sustainability
  • UV Coatings
  • Waterborne
  • Waterborne
  • FINISHING
  • Finishing News
  • Finishing Technologies
  • Finishing Equipment
  • RESOURCES
  • Columns
  • Blogs
  • Coatings Supplier Handbook
  • Podcasts and Videos
  • PCI Store
  • eBooks
  • Sponsor Insights
  • White Papers
  • COATLE Word Game
  • Columns
  • Ask Joe Powder
  • Did you know?
  • Distribution Dive
  • Focus on Canada
  • Formulating With Mike
  • Innovation Insights
  • Moody's Coatings Conundrums
  • Powder Coating Perspectives
  • Target the Market
  • TiO2 Insider
  • Blogs
  • Editor's Viewpoint
  • Industry Insights
  • Podcasts and Videos
  • COAT-IT! Podcast
  • Videos/PCI TV
  • EVENTS
  • Coatings Trends & Technologies Summit
  • Paint and Coatings Academy
  • Webinars
  • Calendar of Events
  • Lifetime Achievement Award
  • DIRECTORIES
  • Buyer's Guide
  • Equipment Directory
  • Materials Directory
  • EMAGAZINE
  • Current Issue
  • eMagazine Archive
  • China Issue Archive
  • Editorial Advisory Board
  • CONTACT
  • Contact Us
  • Advertise
  • Subscribe to eMagazine
  • Subscribe to eNewsletters
Painting & Coating Industry (PCI) logo Powder coating summit logo
search
cart
facebook twitter linkedin youtube
  • Sign In
  • Create Account
  • Sign Out
  • My Account
Painting & Coating Industry (PCI) logo Powder coating summit logo
  • NEWS
    • Latest News
    • Market Trends & Reports
    • Price Alerts
    • Subscribe to eNewsletters
    • Global Top 10/ PCI 25
    • Weekly Featured Article
    • COATLE Word Game
  • PRODUCTS
    • Product News
    • Must See Products and Services
  • MATERIALS
    • Additives
    • Resins/Polymers
    • Pigments
    • Equipment
    • Distributors
  • TECHNOLOGIES
    • Adhesives
    • Architectural Coatings
    • Industrial Coatings
    • Nanotechnology
    • Powder Coatings
    • Solventborne
    • Special Purpose Coatings
    • Sustainability
    • UV Coatings
    • Waterborne
    • FINISHING
      • Finishing News
      • Finishing Technologies
      • Finishing Equipment
    • RESOURCES
      • Columns
        • Ask Joe Powder
        • Did you know?
        • Distribution Dive
        • Focus on Canada
        • Formulating With Mike
        • Innovation Insights
        • Moody's Coatings Conundrums
        • Powder Coating Perspectives
        • Target the Market
        • TiO2 Insider
      • Blogs
        • Editor's Viewpoint
        • Industry Insights
      • Coatings Supplier Handbook
      • Podcasts and Videos
        • COAT-IT! Podcast
        • Videos/PCI TV
      • PCI Store
      • eBooks
      • Sponsor Insights
      • White Papers
      • COATLE Word Game
    • EVENTS
      • Coatings Trends & Technologies Summit
      • Paint and Coatings Academy
      • Webinars
      • Calendar of Events
      • Lifetime Achievement Award
    • DIRECTORIES
      • Buyer's Guide
      • Equipment Directory
      • Materials Directory
    • EMAGAZINE
      • Current Issue
      • eMagazine Archive
      • China Issue Archive
      • Editorial Advisory Board
    • CONTACT
      • Contact Us
      • Advertise
      • Subscribe to eMagazine
      • Subscribe to eNewsletters
    Industrial CoatingsSustainable

    Coil Coating Applications

    The Next Frontier for Energy-Curable Technologies

    By Emeline Firmin, Craig Smith Ph.D., Marisol Rodriguez Ph.D.
    PCI-0724-PPG-feature-1170.jpg
    PCI-0724-PPG-1.jpg
    All images courtesy of PPG
    PCI-0724-PPG-2.png
    All images courtesy of PPG
    PCI-0724-PPG-3.jpg
    Architectural panels made from coiled aluminum is one of the many emerging uses for energy-cured coatings.
    PCI-0724-PPG-4.png
    All images courtesy of PPG
    PCI-0724-PPG-feature-1170.jpg
    PCI-0724-PPG-1.jpg
    PCI-0724-PPG-2.png
    PCI-0724-PPG-3.jpg
    PCI-0724-PPG-4.png
    July 12, 2024

    Industrial coatings made with advanced polymers, pigments, and additives perform a variety of important functions, including UV protection, chemical and corrosion resistance, and durability that can extend the lifecycle of a product. When it comes to performance, however, the quality of the coating formulation is only half of the equation. Coatings have to be cured properly as well—with strict adherence to the specifications provided by the coatings manufacturer­—for optimal protection performance and aesthetics.

    Curing, or crosslinking, is the chemical process that enables a coating to harden and bond to a substrate. A good curing process is essential for chemical resistance, color, resiliency, and other important performance characteristics. However, curing methods vary based on the specific chemistry of the protective coating. Conventional liquid and powder coatings typically cure with air or heat, but alternative solutions exist that use radiant energy sources to initiate the cross-linking process instead.

    Energy-curable coatings were introduced in the wood products industry more than 50 years ago. Due to innovations in formulations, processes, and equipment, these high-technology solutions are now used on substrates such as vinyl, composites, and even pre-painted metal.

    Thanks to significant investments in research and development, a new frontier has emerged for these advanced solutions: coil coating applications. Energy-cure coatings are expected to produce revolutionary changes in coil-centered industries like building materials, appliances, and HVAC. These advancements will raise the bar for more sustainable, energy-efficient, high-performance solutions, including formulations that offer durability for exterior applications and broader gloss ranges.


    What are Energy Curable Coatings?

    The two primary types of energy-curable coatings are ultraviolet (UV) and electron beam (EB), each with their own performance attributes. While the curing mechanism varies between the two, they both convert liquid paints to solids that fully cure and bond with the substrate in seconds to form a hard, durable finish.

    Unlike thermal curing that requires heat, energy curing is performed at or near ambient temperature using photons of light or electrons to polymerize materials onto a substrate. This method, often called cold curing, is attractive to manufacturers that use wood, plastic, and other heat-sensitive materials because these substrates can be damaged when exposed to the higher temperatures required to rapidly cure most conventional coatings. UV formulations are comprised of liquid monomers (small molecules), oligomers (a molecular complex comprised of a few monomer units), and additives with a small percentage of photoinitiators that convert light energy to chemical energy. When UV-curable formulations are exposed to electromagnetic radiation from UV lamps, photochemical processes are initiated that result in the rapid polymerization of the monomers and oligomers. 

    EB formulations also use liquid monomers, oligomers, and additives, but they do not require photoinitiators. These formulations are cured by an electron beam device that emits electrons at a controlled rate that rapidly polymerize the monomers and oligomers in the formulation. Like UV coatings, the technology requires no heat source to cure. 

    Both UV- and EB-curable solutions can be used on various substrates that can be rolled, such as paper, PVC foils, or coils, because curing is immediate. They can be applied with a variety of methods, including roller coating, curtain coating, spraying, and vacuum coating.

    The performance, sustainability, and other advantages of UV- and EB-curable coatings, coupled with advancements in the technology, are making these solutions viable for a broader range of substrates and industries.


    Sustainability Benefits Driving Transitions to UV/EB-Curable Solutions

    One factor driving global growth in energy-curable coatings is rising interest in more sustainable products. Most conventional liquid paints contain solvents that dissolve and disperse ingredients such as pigments, resins, and additives. Energy-curable solutions allow manufacturers to use 100%-solid-content solutions that contain no solvents, which leads to low, or even no, VOC emissions, and lower flammability risks. 

    This class of coatings is also considered to be more energy efficient since curing is nearly instantaneous. Less energy is needed for drying from UV lamps or electron beams than conventional thermal drying ovens. 

    With increasing regulatory oversight of VOC emissions and efforts to lower energy consumption, UV/EB technologies appear poised to meet the current and future environmental challenges of our time, and grow in prominence in the coatings industry.


    Gains in Costs, Time, and Efficiency 

    Manufacturing is driven by productivity, and ways to improve turnaround time and cost efficiency. The finishing process can play a significant role in these efforts. Conventional liquid coatings require time and temperature to cure. Typically, lower temperatures require more time to dry and cure the paint. 

    While the level of light or energy needed to cure UV/EB coatings varies depending on film thickness and chemistry type, these technologies contribute to higher productivity from faster finishing since no time is needed to preheat the substrate or for water or solvents to evaporate before curing. 

    Another advantage is that no thermal ovens are required for curing because the polymerization reaction takes place at room temperature, which can produce impressive cost and time savings. Additionally, UV/EB equipment is less capital intensive and has a more compact footprint than thermal ovens (Figure 1).

    The thermal drying and UV/EB curing process.
    FIGURE 1 » The thermal drying and UV/EB curing process.

    These alternative technologies cure in seconds or even faster with immediate conversion rates of 90% or more. Parts can be handled almost immediately for packing, storage, and shipping, which reduces the need for floor space to hold inventory at various stages of the finishing process.

    In multi-layer systems, it is also possible to consider wet-on-wet application in order to further reduce the length of the line and increase productivity. With EB solutions, for instance, a single cure is possible with up to three different layers of wet-on-wet paint of 80 microns each. With EB technology, film opacity has a negligible impact on curing as the electrons are not absorbed by pigments in the way that UV radiation is. Thick, multi-layer coatings can even be done at high speed. 

    In contrast, UV curing for wet-on-wet application can be more challenging when the paint is not clear or transparent, as it is more difficult for photons of light to penetrate the paint.


    Performance Advantages 

    Energy-cured coatings deliver on protective performance by offering exceptional hardness, scratch and chemical resistance, and high flexibility.

    While energy-curable coatings were once considered to be brittle, that is no longer the case. In the technology’s early years, these coatings were ideal for flat surfaces that didn’t require “flexible” paint. The latest energy-cure formulations meet the requirements for flexible substrates, good bonding strength, and resistance to twisting and bending. 

    Because these coatings are made with 100%-solid content and do not contain water or solvents, these solutions maintain nearly the same film thickness before and after the cure, with virtually no loss in weight. 

    With modifications to formulations, processes, and curing equipment, sheen levels from deep matte to very-high gloss can be achieved. While both technologies offer distinct advantages, the decision between UV- or EB-curable coatings includes factors such as initial equipment start-up costs, application requirements, and ongoing operational costs. 


    What’s Next for Energy-Curable Innovation?

    Wood manufacturing remains one of the primary industries for energy-cure technologies today, but that is changing quickly thanks to a growing global interest in more sustainable finishing solutions. Through investments in research and development, including pioneering work done by PPG, these advanced coatings are now available for a broader range of applications and industries. 

    Historically, the shape or design of the substrate was a major consideration in whether UV/EB technology was an option, as it was more suitable for flat, linear shapes. Today, new curing formulations, equipment, and processes are making the technology more applicable for complex 3D shapes, creating new opportunities in industries such as automotive and general finishing. 

    Interest among coil applicators is growing primarily due to energy-efficiency advantages, low-VOC content, and a lower carbon footprint via the elimination of high-temperature, gas-fired curing ovens. With energy curing, manufacturers of coil-coated products can expect to lower their processing costs significantly.


    PPG’s Commitment to Energy-Curable Solutions and Innovations

    The use of energy-curable coatings is growing steadily among manufacturers and coil applicators. With ongoing investments in R&D, newer generations of UV/EB-curable coatings and advancements in equipment will continue to drive adoption of these solutions across a wider range of industries and end-use applications.

    Architectural panels made from coiled aluminum is one of the many emerging uses for energy-cured coatings.

    PPG’s extensive history with UV/EB technologies is helping the global coatings company accelerate the development of new energy-curable coatings for coiled metal, including cutting-edge solutions that offer the durability and performance needed for exterior applications, and a wider range of gloss levels.


    The Newest Energy-Curable Innovation 

    PPG was among the first to offer UV-curable solutions for the wood industry and remains a global leader in energy-cure technologies. Today, the company offers a wide range of 100%-solid waterborne and solventborne formulations, suitable for a wide range of industries including coil, automotive, packaging and specialty materials. 

    The newest products in the company’s energy-cure portfolio are PPG DURANEXT™ UV/EB coatings, an alternative to traditional coil coating systems. It is the company’s first UV/EB product family for metal. 

    PPG DuraNEXT solutions include a line of primers, backers, topcoats, and clearcoats for interior and exterior applications, and are engineered to maintain the finish durability and beauty of coil-coated products. With near-zero VOCs and instant, non-thermal curing, DuraNEXT UV/EB coatings are a sustainably advantaged product line with a lower carbon footprint than traditional thermally cured building product coatings. 

    The family of products includes an EB clearcoat, which offers excellent weather resistance, durability, and color/gloss retention. The technology is engineered for interior and exterior coil applications and is used over digitally printed inks to maintain their beauty and durability.

    For more information, visit PPG's website here.

    *All images courtesy of PPG.

    KEYWORDS: Coil Coatings curing energy curing high-performance coatings Metal Coatings Roof Coatings UV coatings

    Share This Story

    Looking for a reprint of this article?
    From high-res PDFs to custom plaques, order your copy today!

    Emeline Firmin, Global Technical Manager, Energy Cure Products; PPG, Pittsburgh, PA

    Craig Smith, Ph.D., Global Technical Platform Director, Coil Coatings; PPG, Pittsburgh, PA

    Marisol Rodriguez, Ph.D., Global Technical Director, Industrial Product Development; PPG, Pittsburgh, PA

    Recommended Content

    JOIN TODAY
    to unlock your recommendations.

    Already have an account? Sign In

    • PCI-0724-Global10-Feature-1440.png

      2024 Global Top 10: Top Paint and Coatings Companies

      Who ranks on top? PCI’s annual ranking of the top 10...
      Paint and Coating Market Reports
      By: Courtney Bassett
    • PCI-0724-PCI25-Feature-1440.png

      2024 PCI 25: Top Paint and Coatings Companies

      PCI's annual ranking of the top 25 North American paint...
      Global Top 10 and PCI 25
      By: Courtney Bassett
    • pci1022-Kinaltek-Lead-1170.jpg

      A Novel Pigment Production Technology

      Following an extensive R&D program that demonstrated...
      Paint and Coating Pigments
      By: Jawad Haidar and Nitin Soni
    You must login or register in order to post a comment.

    Ludwig Morissette
    September 16, 2024
    Families use it to protect the roof and also effectively prevent heat, helping your family save electricity Basket Random. There are many advantages when using this coating.

    Andrea Abble
    December 17, 2024
    So exciting

    Report Abusive Comment

    Subscribe For Free!
    • eMagazine
    • eNewsletter
    • Online Registration
    • Subscription Customer Service

    The Coatings Minute: Why Industry News Matters More Than Ever

    The Coatings Minute: Why Industry News Matters More Than Ever

    The Coatings Minute: Your Inside Look at PCInnovations

    The Coatings Minute: Your Inside Look at PCInnovations

    The Coatings Minute: Print Returns with PCI’s New Showcase Issue

    The Coatings Minute: Print Returns with PCI’s New Showcase Issue

    CTT Registration Now Open

    CTT Registration Now Open

    More Videos

    Sponsored Content

    Sponsored Content is a special paid section where industry companies provide high quality, objective, non-commercial content around topics of interest to the PCI audience. All Sponsored Content is supplied by the advertising company and any opinions expressed in this article are those of the author and not necessarily reflect the views of PCI or its parent company, BNP Media. Interested in participating in our Sponsored Content section? Contact your local rep!

    close
    • Modern arapartment complex painted in bright colors.
      Sponsored byEPS - Engineered Polymer Solutions

      Architectural Polymers Leading the Way in Coatings Innovation

    • paint sprayer in a workshop
      Sponsored byallnex

      Enabling Performance and Compliance: allnex Introduces a New Line of VOC Exempt Solvent-Borne Resins

    Popular Stories

    No. 3 AkzoNobel

    AkzoNobel to Close Two Manufacturing Sites

    A collage of products using non-PFAS

    A Surge in Non-PFAS Releases

    Default Aerospace Image

    PPG Plans Major Aerospace Facility



    PCI Buyers Guide

    Submit a Request for Proposal (RFP) to suppliers of your choice with details on what you need with a click of a button

    Start your RFP

    Browse our Buyers Guide for manufacturers and distributors of all types of coatings products and much more!

    Find Suppliers

    Events

    September 3, 2025

    Coatings Trends & Technologies Summit

    The Coatings Trends & Technologies (CTT) Summit is an annual conference for both liquid and powder coatings formulators and manufacturers to discuss innovations in coatings technology. This event combines high-quality technical presentations, a resource-rich exhibit hall, and dedicated networking opportunities to connect scientific minds, foster innovation, and cultivate game-changing new ideas!

    January 1, 2030

    Webinar Sponsorship Information

    For webinar sponsorship information, visit www.bnpevents.com/webinars or email webinars@bnpmedia.com.

    View All Submit An Event

    Poll

    Longest-running laboratory experiment

    What is the longest-running laboratory experiment?
    View Results Poll Archive

    Products

    CTT Summit Short Courses (Live 9/3/25)

    Coatings Trends & Technologies Summit is expanding its offerings with four short courses. These short courses will offer an extensive day of interactive learning.

    See More Products
    pci  webinar april 2025

    PCI CASE EBOOK

    Related Articles

    • pci0822-Dupont-Lead-1170.jpg

      The Next Generation of Coil Coating

      See More
    • Custom Coil Coating System

      Custom Coil Coating System Meets Production and VOC Removal Demands for Automotive Manufacturer

      See More
    • pci0421-Aditya-889570808-900.jpg

      Water-Based Epoxy Technologies for Metal Coating Applications

      See More
    ×
    All images courtesy of PPG
    All images courtesy of PPG
    Architectural panels made from coiled aluminum is one of the many emerging uses for energy-cured coatings.
    All images courtesy of PPG

    Keep the info flowing with our eNewsletters!

    Get the latest industry updates tailored your way.

    JOIN TODAY!
    • RESOURCES
      • Advertise
      • Contact Us
      • Directories
      • Store
      • Want More
    • SIGN UP TODAY
      • Create Account
      • eMagazine
      • eNewsletters
      • Customer Service
      • Manage Preferences
    • SERVICES
      • Marketing Services
      • Reprints
      • Market Research
      • List Rental
      • Survey & Sample
    • STAY CONNECTED
      • LinkedIn
      • Facebook
      • Youtube
      • X (Twitter)
    • PRIVACY
      • PRIVACY POLICY
      • TERMS & CONDITIONS
      • DO NOT SELL MY PERSONAL INFORMATION
      • PRIVACY REQUEST
      • ACCESSIBILITY

    Copyright ©2025. All Rights Reserved BNP Media.

    Design, CMS, Hosting & Web Development :: ePublishing

    Painting & Coating Industry (PCI) logo Powder coating summit logo
    search
    cart
    facebook twitter linkedin youtube
    • Sign In
    • Create Account
    • Sign Out
    • My Account
    Painting & Coating Industry (PCI) logo Powder coating summit logo
    • NEWS
      • Latest News
      • Market Trends & Reports
      • Price Alerts
      • Subscribe to eNewsletters
      • Global Top 10/ PCI 25
      • Weekly Featured Article
      • COATLE Word Game
    • PRODUCTS
      • Product News
      • Must See Products and Services
    • MATERIALS
      • Additives
      • Resins/Polymers
      • Pigments
      • Equipment
      • Distributors
    • TECHNOLOGIES
      • Adhesives
      • Architectural Coatings
      • Industrial Coatings
      • Nanotechnology
      • Powder Coatings
      • Solventborne
      • Special Purpose Coatings
      • Sustainability
      • UV Coatings
      • Waterborne
      • FINISHING
        • Finishing News
        • Finishing Technologies
        • Finishing Equipment
      • RESOURCES
        • Columns
          • Ask Joe Powder
          • Did you know?
          • Distribution Dive
          • Focus on Canada
          • Formulating With Mike
          • Innovation Insights
          • Moody's Coatings Conundrums
          • Powder Coating Perspectives
          • Target the Market
          • TiO2 Insider
        • Blogs
          • Editor's Viewpoint
          • Industry Insights
        • Coatings Supplier Handbook
        • Podcasts and Videos
          • COAT-IT! Podcast
          • Videos/PCI TV
        • PCI Store
        • eBooks
        • Sponsor Insights
        • White Papers
        • COATLE Word Game
      • EVENTS
        • Coatings Trends & Technologies Summit
        • Paint and Coatings Academy
        • Webinars
        • Calendar of Events
        • Lifetime Achievement Award
      • DIRECTORIES
        • Buyer's Guide
        • Equipment Directory
        • Materials Directory
      • EMAGAZINE
        • Current Issue
        • eMagazine Archive
        • China Issue Archive
        • Editorial Advisory Board
      • CONTACT
        • Contact Us
        • Advertise
        • Subscribe to eMagazine
        • Subscribe to eNewsletters