Advancements to PUR formulas and Edgebander Innovations

Advancing PUR Formulas And Edgebander Innovations  While researching PUR glue I came across articles dating back as far as .   PUR was new to the edgebanding industry back then and as I read through the article, I found many of the talking points and challenges associated with the use of PUR glue to be the same talking points and associated challenges discussed by shop owners today.   Of course, there have been changes to PUR glue formulas and to the gluing systems edgebanders use to process PUR glues, but that information hasn’t filtered down to many shop owners in the North American Market.  A much higher percentage of shops in Europe use PUR as opposed to their North American counterparts.  There are several reasons for this but three we will look at in this blog  Consumer Demand Drives Our Industry  Before we consider the change in PUR glue formulas or innovations to glue pots we need to understand what has driven the changes.  Interior designers are creative and love to present possibilities and concepts to consumers.  Consumer demand ultimately determines which concepts become trends, but it’s clear, there can only be a demand for a style if the style is presented.   NuTek Machinery technicians recently went to the Ott Edgebander factory in Lambach Austria for factory training followed by tours of several large companies in Germany and Austria.  It was just as much of a priority for us to view the showrooms at these cabinet companies as it was to view the machinery.  We don’t want to offer a machine when working with customers, we want to offer solutions to the challenges they face or will face.  Understanding the materials shops work with and the expectations of consumers is key to offering the best possible solution to achieve the desired results.  There were of course the standard white, black, and gray cabinets but there were just as many displays with veneer, structured board, and high gloss cabinets.  It obvious to me as I install and repair machinery in numerous companies that these product styles are rising in popularity in North America as well.  These materials present a challenge to manufacturers as consumers demand better quality for less money.   The days of using white glue with white boards and black glue with black boards are coming to an end as consumers are presented with invisible glue line panels.  The majority of machinery used in our industry comes from Europe and machinery manufacturers such as Ott have adapted and developed solutions to the challenges faced by cabinet and display companies in their home countries that improve the aesthetics of edgebanded panels while increasing efficiency and profit.  These trends them make their way to North America as the machinery to efficiently process the challenging materials is perfected.  I started in the woodworking industry 30 years ago in at large volume producer Merillat Industries.  I was told then that the U.S. market trends followed European trends by several years.  That isn't to say that European trends will replace the standard cabinet we see on the market today but there are certainly quite a few customers that desire the new styles they see.  We may not lag several years behind the European designs for much longer.  There are multiple large European cabinet manufacturers currently opening production facilities in the U.S.  I’m currently working with one of these larger manufacturers on their dust collection project.  They are already in negotiations for their second facility in the U.S. of over a million square feet.  American manufacturers are going to need to respond to the consumer demand for the designs these companies bring by improving methods and upgrading machinery to be competitive.  Textured, high gloss, and veneer panels require invisible glue lines, and this is one of the driving forces for PUR glue and better processing methods.  Don’t panic, much of what you may know about PUR is outdated information.  Even a small shop can take advantage of invisible or at the very least, minimized glue lines dependent on the edgebander you choose.   Even if your customer base doesn't demand the European style cabinets being introduced, you can still benefit from the innovative machine designs to better process the panels your currently do with the ability to process a wider selection of panels that you may struggle to process now.  Not all edgebanders are manufactured equal and the quality of the panel finish, most notably the glue line, attests to this.  While some companies argue the necessity of laser or hot air systems for invisible glue lines, we recognize PUR as the best and most versatile option to achieve this.  PUR can be used with veneers, HPL, and solid wood edges as well as all the edges laser and hot air can process.   PUR is more versatile and can produce invisible glue lines if your pay attention to key features on your edgebander that will allow you to process and achieve this.  What Is PUR Glue?  

• PUR glue is a reactive chemical bond.  Moisture in the air, in the panel and in the edge, material initiate the chemical reaction.  There is more than enough moisture, even in arid locations, to initiate the chemical reaction.
  

 

Have new holz -her bander sprint.Would like to know any one out there using PUR ? are benefits worth extra clean up, price ect. Concerned about cleanup &
possible damage to machine if not cleaned well? Any one using pur every day in a smaller shop?

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Why do you want to use PUR? Are you making parts that are in a high moisture environment?

We have used PUR and unless you have some compelling reason I would avoid it.
The glue does have a shelf life and when we were doing that years ago it was had to find material.

Viscosity(mPa• s)'150,000±1,000(120')
Density'1.18g/ cm3 @ 25°C approx
Suggested Application Temperature'120°C-140°C (140°C are recommended)
Positioning Time'3~5s (120' gluing, 0.3mm glue film,25' environmental temperature)
Moisture Curing Rate'1-3days (0.5mm glue film, 25' environmental temperature, 40-70% humidity)

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I have a Pur hot glue gun which I never use anymore. It leaves a black line at the joint. I have not used it in many years. They might have resolved that issue.

PUR Is a great product it offers thinner glue lines, water resistance, heat resistance and if you want to take the banding off after full cure, you need a table saw. I never recommend it for small shops unless they run the bander all day long. Must be cleaned at the end of day by purging glue system, if you for get to clean it over the weekend it will set like cement in your glue system, specially where there is high humidity.

Better stick to regular EVA if small shop

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