A system for dispensing a viscous material onto a substrate

Details A system for dispensing a viscous material onto a substrate A system for dispensing a viscous material onto a substrate

B - Operations, Transporting

67

D

B67D 7/08 (2010.01) B67D 7/18 (2010.01) B67D 7/82 (2010.01) B05C 5/00 (2006.01)

Patent

CA 2489818

A system for dispensing a viscous material onto a substrate which includes a dispensing element, a viscous material reservoir and a metering device coupled between the reservoir and the dispensing element for metering a variable amount of a viscous material through the dispensing element. The dispensing element and metering device can be moved by a positioner along a predetermined pattern adjacent a surface of a substrate. Closed loop temperature control is provided for the dispensing element and the substrate to ensure a substantially constant viscosity and a substantially constant flow rate. A motion controller adjusts a speed of movement and a direction of movement of the positioner along the predetermined pattern to cause the dispensing element to dispense a predetermined amount of the material at a predetermined substantially constant rate upon the actuation of the metering device. A prime and purge station may be provided adjacent the substrate for sucking air bubbles from the dispensing element and metering device.

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