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Woman on a cell phone representing Flexel reactive film adhesives for better electronics from H.B. Fuller.

Reactive Film Adhesives for Better Electronics

Posted 02/24/2016 by Brendon Kryzer , Director Global Electronics

The demand for consumer electronics is higher than ever before. There are almost as many cell-phone subscriptions (6.8 billion) as there are people on this earth (seven billion). Research shows that people spend an average of 8 hours 21 minutes sleeping a day—but spend an average of 8 hours 41 minutes on media devices. Even more interesting is the finding that the majority (81%) of smartphone users have their phones switched on all the time, even in bed. 

With the growing demand for mobile devices, the need for soft goods (mobile device cases and covers) has also increased. Consumers want sleek cases and covers that look nice and feel comfortable, and manufacturers are delivering by using high-end textiles and leathers. 

This increase in use and overall booming demand for both mobile devices and soft goods creates challenges for the producers of electronic devices as they are tasked with providing quality products while keeping production procedures streamlined. As the electronic devices industry is poised for even more growth, you as a design engineer must look to incorporate an electronic adhesive that both meets the market demand and does not increase costs. But does such an adhesive exist?

The answer is yes, and is found in the H.B. Fuller line of Flexel reactive film adhesives.

H.B. Fuller created a full line of reactive film adhesives for electronic applications that both meet the growing demand and were designed to circumvent any problems that arise with other types of adhesive films. Reactive film adhesives excel where pressure sensitive adhesives (PSA) and thermoplastic polyurethane (TPU) heat activated film adhesives fall short. Not only are reactive film adhesives ideally suited for bonding materials like leather to make mobile device cases and covers, but they also are supplied at a specific thickness, alleviating the need for manufacturers to deal with messy overspray (like there oftentimes is with a liquid) because they know they have the right amount of glue where needed.

Reactive film adhesives are overall simpler to use. They can be pre-applied to fabrics and leathers and then cut to size. Their low activation temperature makes them gentle on heat sensitive materials (like fine leather or textiles) so they retain their fine finish, whereas thermoplastic polyurethane film adhesives typically require a high heat activation, which can damage these materials during the bonding process and detract from the aesthetics. 

The below infographic provides an overview of traditional and new reactive film adhesives, showcasing how they streamline production processes without sacrificing quality of the final electronic product. And since reactive film adhesives are used in everything from wearable devices and clothing to computers and vehicles, it’s worth learning more about how H.B. Fuller is making electronic assembly easier. 

Download our white paper to learn more about Reactive Film Adhesives and the H.B. Fuller full line line of Flexel products.


Reactive Film Adhesives Infographic


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