{"id":1744,"date":"2008-10-17T11:58:59","date_gmt":"2008-10-17T11:58:59","guid":{"rendered":"https:\/\/permabond.com\/uv-curable-adhesives\/"},"modified":"2026-01-07T13:16:13","modified_gmt":"2026-01-07T13:16:13","slug":"uv-curable-adhesives","status":"publish","type":"post","link":"https:\/\/permabond.com\/fr\/uv-curable-adhesives\/","title":{"rendered":"What are UV Curable Adhesives \u2013 More than the name implies"},"content":{"rendered":"

UV Cure Adhesives<\/h1>\n

UV-curing adhesives have been around for several decades, and their use is widespread, particularly in medical device assembly and the electronics industry. Conventional UV curable adhesives<\/a> (UV cure acrylates) became popular in medical device assembly in the late 1980\u2019s when restrictions on solvent bonding drove manufacturers to find a more environmentally and user-friendly solution. The boom in the electronics industry in the 1990\u2019s saw the introduction of many exciting new UV-curable adhesives, geared to help speed up production lines by giving instant, high-performance bonding results.<\/p>\n

Curing UV activated adhesives through plastic substrates is challenging. Most plastics are UV-stabilised to prevent the plastic degrading, becoming brittle and turning yellow. This means they block out the UV light. Development chemists experimented with different photoinitiators and found those with curing wavelengths more similar to that of visible light would trigger the adhesive to cure through UV-stabilised plastics, as well as allowing adhesive cure without the need of a UV lamp. The popularity of this type of light-activated adhesive in a variety of other industries is rapidly increasing. Thanks to its versatility it is now used by fabricators of a broad range of plastic items and assemblies.<\/p>\n

Adhesives that cure with both UV and visible light are most appropriately called photo- or light-curable adhesives but most manufactures name them UV adhesives and add a note that they also cure with visible light.<\/p>\n

Also, a misnomer is describing UV-curable as the \u201ctype\u201d of adhesive. The name says nothing about the type of adhesive. It simply states the cure mechanism. For example, an epoxy can be a heat-cure epoxy<\/a>, a two-component (mixable) epoxy<\/a> or a UV-cure epoxy. Most silicones are moisture-cured, but there are UV-curable silicones and similarly UV-curable cyanoacrylates.<\/p>\n

To further complicate the naming of adhesives, many adhesives have more than one cure mechanism.<\/p>\n

Various types of UV-curable adhesives include:<\/h2>\n

UV\/Anaerobic sealant<\/strong> \u2013 The UV portion allows manufacturers to assemble parts with instant, on-demand handling times. The shadow-cure areas can then cure anaerobically to form high-strength, highly durable bonds with the chemical and environmental resistance of a high-strength anaerobic adhesive.
\nUV\/Heat Cure <\/strong>\u2013 The UV portion allows high-speed surface mount on PC boards. The heat cure ensures cure under the components.
\nUV\/ Moisture Cure<\/strong> \u2013 The UV portion allows a high-speed conformal coating on a PC board. The moisture cure ensures that shadowed areas cure.<\/p>\n

The above are “dual cures.” However, some have more than two cure mechanisms. Such as:
\nUV\/Heat\/Activator <\/strong>\u2013 The activator portion bonds the magnets into motor cans readily. The UV portion instantly cures the squeezed-out excess material. The heat-cure portion cures any uncured adhesive if the gap is too large for the activator cure.<\/p>\n

If the names mean little, how do I choose a UV adhesive?<\/h2>\n

When choosing an adhesive, first narrow down the best technologies to suit your design, bonding and durability requirements. Then consider the manufacturing process most suitable to your assembly.<\/p>\n

UV is often associated with high-speed automated production lines. However, glass and crystal artists use UV cure adhesives. The attraction of UV for the artist is the on-demand curing. No cure occurs until the artist has the pieces positioned exactly where they desire. Then they hit the light and cure is on demand. Often UV-curable adhesives are crystal-clear, so they offer the appearance of an \u201cinvisible\u201d glue-line, so as not to detract from the finish of the bonded artwork.<\/p>\n

What are the costs?<\/strong><\/h3>\n

UV curable adhesives are competitive with other types of adhesives. The equipment costs are commensurate with the project scale. Sunshine is still free and a good sunny day will cure adhesive. Small handheld units cost less than a steak dinner. Conversely, industrial lamps cost thousands of dollars. The popularity of these industrial systems is proof that the time and energy savings over other cure methods, such as heat-cure ovens, is that they are worth the investment.<\/p>\n

Adhesive Safety Consideration<\/strong><\/h3>\n

It is important to follow the worker health and safety recommendations of the manufacturer.
\nConventional UV-curable adhesives (UV Cure acrylates) are solvent-free, 100% solid materials are easy to incorporate into almost any workplace. Other types of UV-curable adhesives such as UV Cure Cyanoacrylates (Superglue) or UV Cure Epoxy may have special storage and handling requirements.<\/p>\n

Light Safety Considerations<\/strong><\/h3>\n

To put the safety of these adhesives<\/a> into perspective, it helps to know that a bright sunny day is about 3mW\/cm\u00b2 of UV light in the 320-380 nm wavelength. If your UV lamp is 30mW\/cm\u00b2, you sun burn 10 times faster. If your lamp is an industrial lamp with about 3000mW\/cm\u00b2 you will sun burn 1000 times faster.<\/p>\n

Position high energy lamps over a conveyor, and shield it. Use a radiometer to test the surrounding area for stray UV light to ensure worker safety. You can also install safety shutters which will shut the lamp down if the shutter is open.<\/p>\n

UV light does not bounce or reflect well. However, shield workers from light in their line of vision. Even if the radiometer shows the light is all in the visible range, not in the UV range, dark, UV blocking glasses are recommended as it is uncomfortable to look at a light bulb.<\/p>\n

\"UV-curable<\/p>\n

For further help and advice, please contact <\/a>Permabond.<\/p>\n","protected":false},"excerpt":{"rendered":"

UV Cure Adhesives UV-curing adhesives have been around for several decades, and their use is widespread, particularly in medical device assembly and the electronics industry. Conventional UV curable adhesives (UV cure acrylates) became popular in medical device assembly in the late 1980\u2019s when restrictions on solvent bonding drove manufacturers to find a more environmentally and […]<\/p>\n","protected":false},"author":5,"featured_media":1440,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[614,831],"tags":[42,242,43],"class_list":["post-1744","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-adhesive-types-2","category-uv-hartende-klebstoffe-de","tag-adhesives","tag-curable-adhesives","tag-permabond"],"acf":[],"yoast_head":"\nUV Curable Adhesives | Permabond Engineering Adhesives<\/title>\n<meta name=\"description\" content=\"UV-curable adhesives have been around for several decades, and their use is widespread in many industries.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, 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