Method and apparatus for dispensing small amounts of liquid mate

Details Method and apparatus for dispensing small amounts of liquid mate Method and apparatus for dispensing small amounts of liquid mate

1996-07-17

1998-05-05

Lusignan, Michael

Coating processes

Electrical product produced

Integrated circuit, printed circuit, or circuit board

222 1, 2221465, 222504, 228102, B05D 512

Patent

active

057471029

ABSTRACT:
Apparatus and methods for dispensing droplets of liquid or viscous material are disclosed. A valve is opened to dispense a stream of the heated liquid or viscous material through an elongated orifice of a nozzle. The stream of material being dispensed from the elongated orifice is broken into droplets by rapidly closing the valve. Furthermore, a method for varying the height of a droplet of liquid or viscous material is disclosed by which two or more droplets combine to form a droplet of a desired height. A method for applying a plurality of droplets of material onto a substrate so that the droplets flow together to form a uniform film of desired thickness and shape is also disclosed. A second embodiment of the invention relates to dispensing apparatus with a heater assembly removably attached to the dispenser housing. Another modification of the invention relates to a modified seat assembly wherein the valve has three positions with respect to the valve seat and a modified nozzle assembly wherein the nozzle is constructed of a thin walled tube.

REFERENCES:
patent: 2025509 (1935-12-01), Hieber
patent: 3943527 (1976-03-01), Hartman
patent: 4066188 (1978-01-01), Scholl et al.
patent: 4120086 (1978-10-01), Crandell
patent: 4161386 (1979-07-01), Osuna-Diaz
patent: 4447706 (1984-05-01), Eder et al.
patent: 4644140 (1987-02-01), Hillinger
patent: 4711379 (1987-12-01), Price
patent: 4753819 (1988-06-01), Shimada
patent: 4784582 (1988-11-01), Howseman, Jr.
patent: 4848606 (1989-07-01), Taguchi et al.
patent: 4926029 (1990-05-01), Pearson
patent: 4942998 (1990-07-01), Horvath et al.
patent: 4953755 (1990-09-01), Dennison
patent: 4967933 (1990-11-01), Maiorca et al.
patent: 5052338 (1991-10-01), Maiorca et al.
patent: 5074443 (1991-12-01), Fujii et al.
patent: 5151025 (1992-09-01), Muller
patent: 5205439 (1993-04-01), Strum
patent: 5266349 (1993-11-01), Bok
patent: 5277344 (1994-01-01), Jenkins
patent: 5320250 (1994-06-01), La et al.
patent: 5328085 (1994-07-01), Stoops et al.
patent: 5364011 (1994-11-01), Baker et al.
patent: 5462199 (1995-10-01), Lenhardt
patent: 5524792 (1996-06-01), Wakabayashi et al.
Dispersing for Surface Mount Shoots into the Future with DispenseJet.TM. Technology from Asymtek, Asymtek Engineering Tech Report, no date.
Viscosity and Its Relationship to Fluid Dispensing, Douglas Shade, Electronic Packaging & Production, Jun. 1991.
Adhesive Dispenser Provides.+-.2% Volume Repeatability, Brian J. Hogan, Design News, Apr. 11, 1994, pp. 75, 77.

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