THE BUSINESS OF VISCOSITY BLOG



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Mike Bonner

Recent Posts

Paint Robots:  The Original Cobots!

Posted by Mike Bonner

May 27, 2020 9:42:21 AM

If you work in the robotics world, hardly a day goes by that you don’t hear something about “Cobots”.  It’s one of the hot topics in the field right now…

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Topics: paint and coating, painting, robotic painting

What Does Temperature Have to do with “Spitters” Anyway?

Posted by Mike Bonner

May 13, 2020 9:53:00 AM

We recently did a survey of Industrial Coaters on LinkedIn to determine the pressures they were experiencing on their business. The first question dealt with the common defects they experience. We got plenty of the “usual suspects” like orange peel and run & sag, but amongst the most interesting and unexpected responses were:

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Topics: Temperature control, Industrial finishing, automotive painting

The Pitfalls of Smaller Automation

Posted by Mike Bonner

Feb 12, 2020 8:15:00 AM

With robot costs in the tens or even hundreds of thousands of dollars, automated dispensing used to be the domain of large, well-financed companies in industries like automotive, aerospace, aeronautics, etc.

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Topics: Temperature control, Point of Application, paint and coating, Industrial finishing, automotive painting, industrial painting, robotic painting

Temperature Control – It’s Not Just for Dispensing Systems Anymore!

Posted by Mike Bonner

Feb 5, 2020 12:56:00 PM

In this space we talk ad nauseum about the importance of temperature control to manufacturers who dispense critical fluids as a part of their process.  We focus on things like paint, sealers, adhesives, and so forth.  You can imagine my surprise when I saw the headline:

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Topics: painting, viscometers, viscometry, temperature control systems, paint temperature control

Can Temperature Change Disrupt My Fixed Displacement Dispensing System?

Posted by Mike Bonner

Dec 4, 2019 9:50:00 AM

In this series we’ve been discussing the impact of changes in fluid properties, specifically viscosity, on the performance of robotic fixed displacement dispensing systems.  In the first installment, “Fixed Displacement Dispensing Doesn’t Guarantee Fixed Results”, we examined common dispensing defects, contrasting those that can be readily addressed through the implementation of a robotic fixed displacement dispensing system, and those that are the result of changes in physical fluid properties, which prove to be more resilient.

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Topics: Viscosity, Manufacturing, Fluid dispensing systems, Point of Application, fluid process control, Can / Container, viscometry, temperature control systems

Why Robotic Fixed Displacement Dispensing Systems Can’t Guarantee Consistent Bead Profiles

Posted by Mike Bonner

Nov 20, 2019 1:05:00 PM

In our last segment, Fixed Displacement Dispensing Doesn’t Guarantee Fixed Results, we examined how viscosity variation impacts your robotic fixed displacement dispensing system and the many defects that can still exist, even in the most highly advanced of these systems.  In this installment, we look more closely at the phenomenon of bead profile, it’s importance to the quality of your end product, and why simply controlling path, dispense rate, and total volume does not guarantee that your process will produce consistently high-quality parts.

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Topics: Manufacturing, Fluid dispensing systems, Temperature control, Point of Application, Can / Container, automotive, temperature control systems

Fixed Displacement Dispensing Doesn’t Guarantee Fixed Results

Posted by Mike Bonner

Nov 13, 2019 9:39:00 AM

It has become commonplace to employ fixed displacement systems when dispensing mid-to-high-viscosity fluids like sealers and adhesives.  It makes sense.  Proper performance in these applications hinges on making sure that the right amount of sealer or adhesive is dispensed in the right place on every part.  When coupled with a robot to assure that path, speed, distance and angle to part are consistent and repeatable, it is easy to believe that the dispense job will be perfect every time.

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Topics: Manufacturing, Point of Application, fluid process control, automotive, temperature control systems, automotive finishing

Why Can’t I Get a Reliable Viscosity Measurement on My Thixotropic Fluid with a Zahn Cup? – Part III

Posted by Mike Bonner

Aug 13, 2019 4:14:00 PM

In Part II of this series, we continued our discussion on viscosity by tackling the topic of thixotropy.  With this defined, we can now circle back to bring it all together and show how different measurement methods produce different results and how our measurement choices can actually work against us.

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Topics: Zahn cups, Efflux Cups, fluid process control, viscometers, viscometry, non-newtonian fluids

Why Can’t I Get a Reliable Viscosity Measurement on My Thixotropic Fluid with a Zahn Cup? – Part II

Posted by Mike Bonner

Aug 6, 2019 3:38:00 PM

In Part I of this series, we examined some of the issues with the viscosity cup measurement process and started to look at the fundamentals of fluid viscosity as a means of explaining the source of those problems.  In this installment, we pick up the discussion with a somewhat difficult topic:  thixotropy.

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Topics: Zahn cups, Efflux Cups, fluid process control, viscometers, viscometry, non-newtonian fluids

Why Can’t I Get a Reliable Viscosity Measurement on My Thixotropic Fluid with a Zahn Cup? – Part I

Posted by Mike Bonner

Jul 30, 2019 10:28:00 AM

Manufacturers who dispense fluids in their process (i.e. – paints and coatings, sealers and adhesives, potting compounds and encapsulants, etc.) all understand that the viscosity of that fluid is fundamental to the process out

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Topics: Zahn cups, Efflux Cups, fluid process control, viscometers, viscometry, non-newtonian fluids

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