5 main reasons to use a Loctite universal bonder instead of an epoxy


1. Most epoxies come in packaging that requires additional mixing containers and hand mixing of the two components. This can be messy and time consuming an requires attention to not mixing more product at one time than can be used within the working life of the mixture. Loctite universal bonders, like HY 4070, come with in a ready to use packaging with a mixing nozzle that does the mixing job as you work. This also makes applying the product that much simpler and faster and much less messy.

2. In case you’re bonding dissimilar materials, epoxies just won’t work because each substrate will likely require a different type of epoxy. On plastics, epoxies generally perform very poorly.

3. Most epoxies, even those from the 5-minute category, take much longer than 5 minutes to really fixture. Loctite HY 4070 fixtures within 2 and builds up strength fast!

4. While epoxies take quite long to build up strength, with the universal bonders this is much faster, allowing you to continue handling the bonded parts and continuing your process much sooner.

5. Once it’s in your toolbox, a universal bonder is likely to replace several other adhesives you may have been using previously because it performs universally well on the high number of typically used materials.

If you are one of those people who prefer to rely on picture rather than words, have a look.


Where Universal Bonders are your best bet


As much interest and amazement as our videos of pulling trains or parking trucks on rigs bonded with Universal Bonders generated, let’s be honest: how often do you need to pull a train or park a truck in that way? Not very often.

There are, however, very realistic situations in industrial manufacturing or repair, where hybrid adhesive becomes indispensable. This technology is completely innovative and we are discovering new possibilities with it almost on daily basis. I’m going to share only a few fields in which they will usually outperform any other available option.

One of the most common challenges in modern manufacturing is joining of two or more materials of very different characteristics. This is usually a challenge for the traditional methods as well, not only for bonding. Different materials mean different adhesion properties, but can also mean different reactions to thermal cycling, humidity, impact stress, or any number of other factors to which the final product might be subjected.

Universal Bonders tackle this challenge because they adhere well to a huge multitude of substrates and withstand well the majority of mentioned factors. Additionally, they fixture much faster than the closest competing technology, allowing you to get on with your manufacturing process sooner. For example, a 5-minute epoxy will usually take much longer than 5 minutes to fixture, while Loctite HY 4070 (Hybrid based Universal Bonder) will fixture in up to 2 minutes.

Bonding of dissimilar substrates is most often a requirement in the production of indoor and outdoor signage and advertising elements, (you can see an example in video 1 below), bonding of equipment tags and RFID tags and in the production of special architecture, like awning arms, railings and the like.

Another common requirement in, for example, production of heavy lifting equipment, street furniture, conveyor belt frames and fitness equipment is impact strength in general. Which is also where the hybrid will perform considerably better than other technologies. If you need to pair that with fast curing, chemical, heat or moisture resistance, you’ll often find a Universal Bonder is your only choice. Some of the typical examples are vibration dampers, magnetic motors, electric scooters, vending machines, plumbing production, building construction, elevator panels etc.

The Universal Bonders or: hybrid technology explained



Like many other human inventions, hybrid adhesives came to be as a reaction to the need or, if you will, a problem that needed to be solved. Generally, in the world of bonding there are two main sides of what adhesives can do. On one side there are instant adhesives, based on cyanoacrylate technology, which are easy to use, bond really fast and are therefore known also in consumer, household use and by do it yourself-ers as the so called super-glue. They have their rightful place also in engineering, due to their safe and simple use, quick curing and high performance on plastics which are nowadays one of the most common materials in industrial use. However, they lack in flexibility and gap filling properties.

On the other end of the scale, are so called structural bonders. In terms of chemistry, they can be epoxy, acrylic, polyurethane, silicone or SMP (silane modified polymer) based. Their strongest traits are, apart from excellent structural performance that gives the range the name, high gap filling properties, excellent performance on metals and environmental durability.

From everything said, it’s fairly obvious that the two ranges of adhesives will be used in practically opposite situations. But naturally, the engineering reality doesn’t always fall into one of these two extremes. There are certainly cases when you might need to fill a small gap, while you still need the adhesive to cure fairly quickly. Plastic does not always get bonded to other plastics, sometimes you need to bond it to a metal or a composite material, and you’ll need your part to be durable and resistant to environmental influences.

This reality is what the chemists in Loctite research & development had in mind when they created the first hybrid adhesive, and later on the entire Universal Bonders range.

Whether you’re looking for an alternative for an epoxy or an acrylic, whether it’s for improving your designs and manufacturing processes or simply in repairs, one of the Universal Bonders is highly likely to fit the bill.

Find out more about Universal Bonders – follow our webinar series!


We are starting a series of webinars on Universal Bonders for those who want to know more. Starting with those of you out there speaking Slovak.

Webinars in Czech, Hungarian, Polish, Romanian and German will follow so stay tuned! In most cases it will be possible to request a sample or a consultation with a technical expert.

For the webinar in Slovak, you can register here: https://lnkd.in/drvbaaV .


Adhesive that pulls a train & can bond almost anything!


Train hybrids blog

Now, I’m absolutely aware that there is probably not one single realistic situation in which you would need to pull a train using a rig which is held together by adhesive. But we did it. Why? Because we can :-)! Don’t take my word for it though – see for yourselves.

And here’s how that was done.

The product that was used is a Universal Bonder, based on Hybrid technology. In adhesive world this means that it combines properties of two chemical components, in this case: cyanoacrylate and methyl methacrylate, and sort of combines the best of both worlds: speed of curing typical for cyanoacrylates and strength and durability typical for MMAs.

It also means that this adhesive has structural and environmental durability, universal adhesion to multitude of substrates and cures fast through high gap, but it is also one of the safest adhesives to handle in terms of minimised health hazards.

More details here.

High Value added defined, or How 25 cents of Loctite saved a $750 Machine


We have a slogan that goes with our Loctite brand, that says: “We Love Machines. Machines Love Loctite.” And much as it is a feat of marketing messaging, it always puts a big smile on my face when I come across colleagues who live their lives loving the machines that make our lives easier and finding ways to give them some tender, loving care in the form of Loctite.

I owe this story to Steve Rayner, one of our Technical Sales People, a mountain man from British Columbia, Canada. Steve likes getting a good deal as much as the next guy, and this one came out at the top of his list.  He found a barely used Husqvarna brush cutter on Craigslist for $70 (they normally retail for $750 plus tax). The ad listed the cutter as not starting, which Steve found hard to believe. In his own words: Husqvarna’s ALWAYS start! Two-stroke engines are fairly simple, so it could only be a handful of things.

So, he took the machine home, all the while thinking it was a scored cylinder / blown piston rings (one of the most common issues with 2 stroke engines), as it felt like it didn’t have compression.

Taking it apart to examine the piston and cylinder, Steve found that the nut that retains the flywheel to the drive shaft had loosened enough to allow the flywheel to spin free (no evidence of threadlocker was found).  No flywheel meant no spark and consequently: no start.

Instead of buying a new flywheel, Steve pulled out a bottle of Loctite 638 from his Training Kit, applied a thin film to the driveshaft and re-mounted the flywheel (with careful consideration to the alignment). He also used Loctite 248 on the threads on the driveshaft, even though the 638 was more than strong enough to retain the flywheel without the nut.

It runs like a dream now; the weeds in Steve’s yard don’t stand a chance! The best part is: it took less than 25 Cents worth of Loctite to fix a $750 machine! And I got a great story out of it! Thank you, Steve, for sharing!

Anti-slip for conveyor belts



When we talk about anti-slip coatings, there are usually two possibilities to refer to: pedestrian traffic or vehicular traffic. You won’t hear people talk about the traffic of big plastic bottles in that context very often.

However, that’s the exact slippery traffic that Henkel’s detergent production facility in Vienna had problems with.

Due to high inclination, low friction and high speed of the conveyor belt, the bottles of Weisser Riese detergent were slipping off the belt. This was causing frequent line stops, scrapping costs and additional handling time. Different coatings were tested to prevent this, but usually wore off the belt in just a few days and had to be reapplied.

Finally, Loctite PC 6261 YL was tested. This product is normally used to cover slippery walking surfaces in the industrial environment to prevent accidents and isn’t not usually used on conveyor belts. Still, it proved to be more than effective. Not only does it prevent slipping of the bottles off the belt, but its yellow colour makes it very easily detectable when it wears out in some places and needs to be re-touched. Which won’t be any time soon because the product itself was designed to withstand much more impact than it’s subjected to on the conveyor belt.