Method of relief printing
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This article is about a printing method. For hot stamping in metalwork, see Hot stamping (steel) . For Hot steel stamping, see Press hardening
Package with hot stamping before (left) and after stamping (middle) with the foil after the stamping (right)
A sample from trade fair, where all the foil hot stamping know-how that was publicly available at the time was included.
Hot stamping or foil stamping is a printing method of relief printing in which pre-dried ink or foils are transferred to a surface at high temperatures. The method has diversified since its rise to prominence in the 19th century to include a variety of processes. After the s, hot stamping became one of the most important methods of decoration on the surface of plastic products.
Process
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In a hot stamping machine, a die is mounted and heated, with the product to be stamped placed beneath it.[1] A metallized or painted roll-leaf carrier is inserted between the two, and the die presses down through it. The dry paint or foil used is impressed into the surface of the product. The dye-stamping process itself is non-polluting because the materials involved are dry.[2] Pressure and heat cause the relevant sections of the foil to become detached from the carrier material and become bonded with the printing surface.[3]
Along with foil stamping machines, among the commonly used tools in hot stamping are dies and foil.[4] Dies may be made of metal or silicone rubber, and they may be shaped directly or cast. They can carry high levels of detail to be transferred to the surface and may be shaped to accommodate irregularities in the surface.
Foils are multilayered coatings that transfer to the surface of the product.[4] Non-metallic foils consist of an adherence base, a color layer, and a release layer. Metallic foils replace the color layer with a layer of chrome or vacuum-metallized aluminum. Metallic foil construction has a metal-like sheen and is available in different metal shades such as gold, silver, bronze, and copper. Pigment foil does not have a metallic sheen but may be glossy or matte. Holographic foil paper includes a 3-dimensional image to provide a distinctive appearance to specific areas of a digitally printed application. Printing is often done on leather or paper.
Different hot stamping machines serve different purposes, but the most common hot stamping machines are simple up-and-down presses.[2][4] Three of the most common brands are Kwikprint, Kingsley, and Howard. However, for more industrial applications Kluge and Heidelberg presses are more commonly used.[citation needed]
History
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In the 19th century, hot stamping became a popular method of applying gold tooling or embossing in book printing on leather and paper.[5] The first patent for hot stamping was recorded in Germany by Ernst Oeser in .[2]
From the s onward, the method became a popular means of marking plastic .[4] Hot Stamping technology for plastic is used for electric components (TV frames, audio components, refrigerators etc.), cosmetic containers (lipstick, cream, mascara, shampoo bottle etc.), automobile parts (interior and exterior materials).[citation needed]
As of , it was one of the most commonly used methods of security printing.[6]
Foil stamping can be used to make Radio-frequency identification (RFID) tags, although screen printing is faster and cheaper.[7]
DIY Methods
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Several do-it-yourself (DIY) techniques exist for crafting foiling stamps. Notably, the advent of 3D printing technology has empowered enthusiasts to fashion stamps from high-temperature resins.[8] When coupled with a conductive wrapper to enhance thermal conductivity within the resin, it becomes possible to attain intricately detailed stamps.
See also
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References
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For more Hot Foil Stamping Machine For Saleinformation, please contact us. We will provide professional answers.
The abundance of decorative effects available to you truly makes the folding carton your canvas. You can combine inks, specialty coatings, and structural design to elevate your brand and appeal to consumers in all settings, retail or online.
So long as people associate 'shine' with quality, foil stamping will remain a popular decorative option for companies. It's a tried-and-true method that dates back centuries, with innovations expanding its use today. Once the purview of luxury brands and deluxe confectionery companies'think those high-end chocolates popular around Valentine's Day'foil decorating has now become far more commonplace on a wide range of everyday product packaging.
The expansion reflects both the technological improvements in applying foil that have yielded lower costs and the growing need to differentiate products. While many printing and packaging companies use traditional hot foil stamping, more companies are also offering the latest in cold foil application.
Here's what you need to know about hot foil stamping and cold foil as you consider adding a sheen to your folding cartons or printed materials.
About Hot Foil Stamping
The days of sealing sheets of literal gold to the covers of books with the help of a hammer and die cuts are long gone, but the technique itself remains relatively unchanged.
In the modern process, foil is dispensed over the substrate against a counterplate. A chase mounted with a custom die (i.e., what you want to appear in foil) stamps down swiftly with heat and pressure applied, adhering the defined area to the paper while the excess foil is peeled away.
It leaves a clean, luxurious finish.
It's an efficient system that takes advantage of technological advancements. Dies can be customized to capture even the most intricate details. The foil itself, although we think of it as metallic, actually comes in a variety of colors, finishes, and textures. You can also combine hot foil stamping with embossing or debossing in a single pass to add a literal dimension to your cartons or printed materials.
About Cold Foil
One of the biggest differences between the hot foil stamping and cold foil techniques is contained in their names. The 'hot' refers to the heat and pressure necessary in that process, while cold foil relies on ultraviolet light rather than temperature.
Whether in sheet-fed lithographic or flexographic printing, cold foil can be applied inline. Foil is dispensed from a roll that's mounted inline and laid over the substrate, which has a UV adhesive printed in the desired pattern. A pressure roller seals the foil to the sheet before exposure to a UV lamp cures the adhesive and locks the design in place.
You can customize foils by applying CMYK or PMS colors to traditional silver or gold foils.
Industries That Use Foil on Their Cartons
Numerous industries rely on foil to enhance their folding cartons, including food and beverage, beauty and cosmetics, cannabis, fine wine, craft beers, and spirits.
Food and beverage brands employ foil to hint at the premium quality of their products.
Beauty and cosmetics companies frequently integrate foil into logos or smaller visual elements, contrasting with darker, more minimalist substrate backgrounds.
Even cannabis brands are turning to foil as a way to signal a high-end or sophisticated product in this emerging, competitive industry.
Fine wine, craft beers, and spirits find that foil can create memorable packaging, such as Virginia Distillery's using 18pt SBS with silver cold foil and a varnish matte coating for their single malt whiskey.
Implementing foil stamping immediately communicates refinement and class to consumers.
Which Process Is Right for You?
So, is hot foil stamping or cold foil stamping right for your project?
No one detail will make your printing and packaging partner suggest one over the other. A general rule of thumb, however, has to do with the size of the area you wish to foil. Hot foil stamping works great for precise applications and defined patterns in small areas. Cold foil, on the other hand, is the preferred technique for large areas, such as moderate or full coverage of folding cartons.
Then there are customization considerations: Hot foil stamping enables debossing or embossing in a single pass; cold foil gives you control over color.
A successful foil stamping design starts by talking with an experienced printing and packaging partner. Oliver Inc. has the expertise and printing technologies to apply brand-elevating hot foil stamping or inline cold foiling to elevate your brand.
Utilizing a human-centered design approach, Oliver peppers you with questions at the beginning of the collaboration to uncover all of your pain points and the values that motivate your company and customers. In turn, this informs the visual elements and packaging materials we believe are best suited for your brand.
The proofing process at Oliver is completely secure and conveniently accessible, enabling you to check projects online, including soft proofs and 3D visualizations, whenever it suits you. Plus, our domestic presence, with multiple facilities across the United States, gives you the ease of visiting in person to observe the progress of your project, at any time.
That's just one of the many advantages of partnering with a domestic packaging supplier. Next to right-size packaging principles, localizing your supply chain is also one of the best practices for brands serious about sustainable packaging to adopt.
Oliver also designs innovative structures, offering a selection of decorative effects (including inks, coatings, and more), and detailed finishing to deliver creative packaging solutions and unforgettable unboxing experiences.
Just as you take care in putting your best products forward, so do we with our packaging solutions. After all, when you succeed, we succeed.
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Oliver Inc. is the nation's leading independent supplier of custom paperboard packaging solutions. Equipped with a commitment to excellence and advanced printing technology, we are eager to help you integrate hot or cold foil stamping into your next sustainable packaging design project. Contact us today to learn more.