The document discusses how temperature impacts common sealer defects in industrial fluid dispensing processes. It notes that Saint Clair Systems has over 3500 temperature control installations handling applications from low to high viscosity. Temperature control is important because viscosity varies with temperature, and maintaining the proper viscosity at the point of application is key to producing a perfect bead or spray pattern. The goal is to stabilize and optimize the temperature of the sealer or adhesive at the nozzle orifice.

1. THE IMPACT OF TEMPERATURE
ON COMMON SEALER DEFECTS
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2. • DESIGNERS AND MANUFACTURERS OF ADVANCED POINT-OF-USE TEMPERATURE AND
VISCOSITY CONTROL SYSTEMS FOR INDUSTRIAL FLUID DISPENSING PROCESSES SINCE
1990
• SPECIALIZING IN BOTH RECIRCULATING AND “DEAD-END” SYSTEMS WITH MORE
THAN 3500 ACTIVE INSTALLATIONS
• LOW VISCOSITY (<1 CPS) TO HIGH VISCOSITY (>1,000,000 CPS) APPLICATIONS
STANDARD AT PRESSURES FROM 0.4 BAR (5 PSI ) – 400 BAR (6000 PSI)
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3. SO WHO CARES?
• THOSE 3500+ TEMPERATURE CONTROL INSTALLATIONS
INVOLVED SOME OF THE TOUGHEST APPLICATIONS IN
PARTNERSHIP WITH DEMANDING CUSTOMERS LIKE:
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4. ROBOTIC SEALER
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5. COMMON DEFECTS
Tail-offThin Bead Start
Blob
End
Blob
Heavy
Bead
Slumping
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6. THE RESULT
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7. THE FUNDAMENTALS
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8. TYPICAL VISCOSITY VS. TEMPERATURE CURVE
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9. 18C
203mm
41C
394mm
38C
375mm
35C
356mm
32C
337mm
29C
318mm
27C
286mm
24C
254mm
21C
229mm
16°C - 5.8mm
21°C - 7.3mm
27°C - 8.9mm
32°C - 9.7mm
38°C - 10.4
DISPENSE PATTERN VS.
TEMPERATURE
• ORIFICE, PRESSURE, SPEED, DISTANCE, AND
ANGLE TO SURFACE HELD CONSTANT
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10. •
18C
203mm
41C
394mm
38C
375mm
35C
356mm
32C
337mm
29C
318mm
27C
286mm
24C
254mm
21C
229mm
16°C - 5.8mm
21°C - 7.3mm
27°C - 8.9mm
32°C - 9.7mm
38°C - 10.4mm
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11. •
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12. •
16°C - 5.8mm
21°C - 7.3mm
27°C - 8.9mm
32°C - 9.7mm
38°C - 10.4
18.3C
203mm
40.6C
394mm
37.8C
375mm
35.0C
356mm
32.2C
337mm
29.4C
318mm
26.7C
286mm
23.9C
254mm
21.1C
229mm
Heavy Edges
Uneven
Coating
Thin,
Uneven
Coating
Heavy Edges
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13. POINT-OF-APPLICATION
• TO PRODUCE THE PERFECT BEAD OR SPRAY PATTERN,
IT IS ESSENTIAL TO DISPENSE THE SEALER OR ADHESIVE AT
EXACTLY THE RIGHT VISCOSITY
• THIS MEANS CONTROLLING THE TEMPERATURE OF THE MATERIAL
AS IT IS BEING DISPENSED
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14. THE GOAL
THE GOAL IS TO STABILIZE AND OPTIMIZE THE
TEMPERATURE OF THE SEALER OR ADHESIVE AT
THE POINT OF APPLICATION WHICH, FOR MOST
SYSTEMS, IS THE NOZZLE ORIFICE…
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15. THANK YOU!!
PLEASE COME SEE US AT:
www.viscosity.com
AND VISIT OUR BLOG AT:
blog.viscosity.com/blog
AND OUR YOUTUBE CHANNEL:
https://www.youtube.com/channel/UCVyAgTJtgNZTozqFeBc
CeNA
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