THE BUSINESS OF VISCOSITY BLOG



    How Much Does Your Material Change During Your Dispense Process?

    Posted by Rob Gladstone

    Jan 29, 2020 9:37:00 AM

    Before I get into how much your material may change during your dispense process, let me provide a quick summary of why it matters. As your plant temperature changes, your material temperature often changes. When material temperature changes, the viscosity changes. When viscosity changes, the end result of your dispense changes – and nothing good happens when your finished product varies. It causes rework, scrap, customer rejects and in some cases, early product failure. In this blog, we’re going to address the effects of material temperature only. There may be other factors affecting your material but they’re not going to be addressed here.

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    Topics: Point of Application, automotive, coating, automotive painting, temperature control systems, robotic painting, paint temperature control, automotive paint finishing, automotive finishing

    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

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