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When Your Typical Adhesive Just Isn’t Enough

At HAR, we offer hundreds of water-based and hot melt formulations. Typically, these high-performance products can handle almost any application that is thrown our way. However, we have identified several specialty packaging and product assembly applications where gluing difficult substrates requires advanced technology - AKA a little more than your typical adhesive. That’s where our PolyUrethane Reactive (PUR) product line comes in. 


The versatility of Liquid (LPUR) and Hot Melt (HMPUR) Polyurethane Reactive Adhesives makes them the smart choice when it comes to higher performance bonding. Unlike most other adhesives, PUR’s utilize the moisture in the atmosphere or in the substrates to provide thermoset bonds. These permanent bonds offer excellent hot and cold temperature, solvent, and moisture resistance, and typically take 24+ hours to fully cure. They do not soften in heat or crack in cold temperatures, are easy to dispense, and can replace other difficult to apply structural adhesives like epoxies.  


PUR’s are commonly used in applications that require destructive bonds to woods, plastics, fabrics, and countless other materials. They are currently being used in automotive manufacturing, door and window manufacturing, filter and textile assembly, woodworking, furniture assembly, bookbinding, and the list continues to grow.  


As PUR’s become more widely used, additional opportunities and applications for the PUR’s are becoming more mainstream. They can require specialized equipment, but their widespread use has allowed this equipment to become more competitively priced.


We are proud to say that the HAR line of PUR’s has proven to be very efficient when compared to other bonding technologies. With our PUR’s, a customer uses less adhesive while achieving stronger bonds the majority of the time.


If you think a PUR may optimize your production, improve your quality, or eliminate a nagging performance issue, please give HAR Adhesive Technologies a call to discuss and evaluate your application.

Michael Casper
Technical Sales Manager

Readers are invited to use the links below to find and contact a local adhesives representative that can help with your company's industrial adhesives needs: HAR Adhesive Technologies has a presence in seven distinct states, uniquely focused on serving the adhesives, adhesive application, and industrial glue equipment needs of each region in: OhioIndianaKentuckyMichiganNew YorkPennsylvaniaWest Virginia



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burning sage says:

August 14, 2020 8:07 AM

This is the first time I've heard of PUR. I must be better than other adhesives.
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August 19, 2020 12:18 AM

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August 19, 2020 3:49 PM

We've used your PolyUrethane Reactive on our customers' cars. We've successfully used them on the interiors and exteriors of vehicles. If you're looking for a great adhesive, then you've found it!
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August 19, 2020 3:54 PM

"These permanent bonds offer excellent hot and cold temperature, solvent, and moisture resistance, and typically take 24+ hours to fully cure. They do not soften in heat or crack in cold temperatures, are easy to dispense, and can replace other difficult to apply structural adhesives like epoxies. " We've used their products for years. Their adhesive is the highest quality available! When you're looking for a professional solution, HAR will get it done!
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I still prefer LPUR but HMPUR do a really job too.
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These two adhesives are really good. I like both
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September 29, 2020 4:08 PM

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Anonymous says:

October 5, 2020 12:38 PM

This comment has been removed by an administrator.


Anonymous says:

October 6, 2020 9:09 AM

This comment has been removed by an administrator.

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Anonymous says:

October 28, 2020 1:15 PM

This comment has been removed by an administrator.

October 29, 2020 11:13 PM

I have used it to secure a piece of concrete stone and very Incredible hold.
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October 30, 2020 1:49 AM

Where is the HAR recommendation? Where is the HAR result? Since I saw those in one of your articles I've been expecting them to be present in each one! HARAdhesive is surely included in one of my top companies.
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website says:

October 31, 2020 7:16 AM


Anonymous says:

November 4, 2020 5:30 AM

This comment has been removed by an administrator.


wood gate says:

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can i use this adhesive for led lights? the one i bought isnt sticky enough.
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Y'all know what to do when regular adhesive ain't enough? You got to HARadhesive. It's that simple. Disclaimer: I do not work for nor do I own HARD. I am just a patron of their products.
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November 19, 2020 8:03 PM

So what would be the best uses for these adhesives? Where would you use them?
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November 19, 2020 8:08 PM

What types of wood can these adhesives be used on?
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Can this be used commercially?
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We have tried using PolyUrethane Reactive at our car detailing shop In Markham. It's quite successful for materials in the exterior and interior. Will get our other locations to grab some as well!
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The versatility of Liquid (LPUR) and Hot Melt (HMPUR) Polyurethane Reactive Adhesives makes them the smart choice when it comes to higher performance bonding. Unlike most other adhesives, PUR’s utilize the moisture in the atmosphere or in the substrates to provide thermoset bonds. I am agree with you on this point
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