THE BUSINESS OF VISCOSITY BLOG



    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

    Why Efflux Cups Should not be Used for Process Control

    Posted by Mark Portelli

    Dec 18, 2019 10:47:00 AM

     

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    Topics: Zahn cups, Efflux Cups, coating, viscometers, flexographic printing, gravure printing, viscometry, non-newtonian fluids, ink management

    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 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

    Viscometers vs. Rheometers: What’s the Difference?

    Posted by Mike Bonner

    Nov 23, 2017 3:00:00 PM

    When you’re looking to purchase a viscometer to help you maintain proper viscosity in your printing, coating, or painting processes, you may come across another category of viscosity measuring devices known as rheometers. Rheometers are similar in principle to viscometers, but they tend to be more expensive. Part of the reason for this is that they have a much broader range of applications.

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    Topics: Viscosity, viscometers, Viscometer Series, rheometry, viscometry, rheology

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