Liquid distrubuting system and method for raising contact area between liquid and substrate

Application Number: 00108043
Application Date: 2000.06.02
Publication Number: 1277537
Publication Date: 2000.12.20
Priority Information: 1999/6/2 US 09/324,704
International: B05C5/02;H05K3/00;H05K3/34
Applicant(s) Name: Nordson Inc.
Inventor(s) Name: William E. Donges;James C. Smith
Patent Agency Code: 72002
Patent Agent: liu xinpeng
Abstract An apparatus and a method to dispense a droplet of liquid onto a substrate, and thereafter flatten the droplet with a burst of pressurized air directed onto the droplet. A dispenser has a dispenser body, which has a liquid supply passageway adapted to connect to a source of liquid. A nozzle body connects to the dispenser body and includes a liquid discharge passageway in fluid communication with the liquid supply passageway. The nozzle body also has an air discharge orifice which is adapted to connect to a source of pressurized air for selectively discharging bursts of pressurized air. The air discharge orifice is configured and aligned with the liquid discharge passageway so that the discharged bursts of pressurized air impinge upon one of the droplets of liquid dispensed from the liquid discharge passageway so as to flatten that droplet and thereby increase the contact area between the droplet and the substrate.