Apparatus and methods for applying conformal coatings to electro

Details Apparatus and methods for applying conformal coatings to electro Apparatus and methods for applying conformal coatings to electro

1994-06-15

1995-04-25

Beck, Shrive

Coating processes

Electrical product produced

Integrated circuit, printed circuit, or circuit board

427421, 427422, 427424, 427420, 118324, 239597, B05D 500

Patent

active

054097339

ABSTRACT:
Apparatus and methods for producing intermittent, discrete patterns of coating material onto discrete irregular substrate areas, such as electronic circuit boards, where the patterns have sharp, square leading and trailing edges, as well as side edges. A slot nozzle die has elongated air slots along the slot extrusion opening. In the operation of the apparatus, the air flow is initiated from both air slots prior to the initiation of the coating material flow. Also, the air flow is continued beyond that point in time, when the coating material flow ceases. The delays between the operations of the air flow and the hot melt flow are on the order of micro seconds. Alternatively, the lead and lag air start and stop times on each side of the film of coating material are different to control the exact disposition of the square cut-on and square cut-off coating edge on the circuit board. The air flow carries the film coating material to the circuit board for deposition in discrete areas thereon. The sharp cut-on and cut-off accommodate multiple discrete area coating or multiple automated circuit board coating.

REFERENCES:
patent: Re33481 (1990-12-01), Ziecker et al.
patent: 3578527 (1971-05-01), Sakata et al.
patent: 3595204 (1971-07-01), McIntyre
patent: 3672570 (1972-06-01), Scarbrough et al.
patent: 3750955 (1973-08-01), Nakai et al.
patent: 3806289 (1974-04-01), Schwarz
patent: 3825379 (1974-07-01), Lohkamp et al.
patent: 3870233 (1975-03-01), Wilhelm et al.
patent: 3972759 (1976-08-01), Buntin
patent: 4047861 (1977-09-01), Balaz
patent: 4059714 (1977-11-01), Scholl et al.
patent: 4128667 (1978-12-01), Timson
patent: 4133970 (1979-01-01), Lusk
patent: 4156398 (1979-05-01), McDaniel
patent: 4247581 (1981-01-01), Cobbs, Jr. et al.
patent: 4377985 (1983-03-01), Reba
patent: 4408562 (1983-10-01), DeCamp et al.
patent: 4476165 (1984-10-01), McIntyre
patent: 4553701 (1985-11-01), Rehman et al.
patent: 4627465 (1986-12-01), Kolibas et al.
patent: 4657047 (1987-04-01), Kolibas
patent: 4687137 (1987-08-01), Boger et al.
patent: 4714647 (1987-12-01), Shipp, Jr. et al.
patent: 4720252 (1988-01-01), Appel et al.
patent: 4735169 (1988-04-01), Cawston et al.
patent: 4746545 (1988-05-01), McIntyre
patent: 4750956 (1988-06-01), Malachowski
patent: 4753819 (1988-06-01), Shimada
patent: 4774109 (1988-09-01), Hadzimihalis et al.
patent: 4778631 (1988-10-01), Cobbs, Jr. et al.
patent: 4815660 (1989-03-01), Boger
patent: 4818464 (1989-04-01), Lau
patent: 4822640 (1989-04-01), Tuhkanen et al.
patent: 4830055 (1989-05-01), Kolibas
patent: 4836440 (1989-06-01), French
patent: 4850514 (1989-07-01), Scholl et al.
patent: 4874451 (1989-10-01), Boger et al.
patent: 4880663 (1989-11-01), Shimada
patent: 4891249 (1990-01-01), McIntyre
patent: 4900593 (1990-02-01), Krippl
patent: 4906492 (1990-03-01), Groshens
patent: 4957783 (1990-09-01), Gabryszewski
patent: 4983109 (1991-01-01), Miller et al.
patent: 4983424 (1991-01-01), Saidman et al.
patent: 4984949 (1991-01-01), Reckziegel
patent: 5000112 (1991-03-01), Rothen et al.
patent: 5012980 (1991-05-01), Viannay et al.
patent: 5016812 (1991-05-01), Pedigrew
patent: 5145689 (1992-09-01), Allen et al.
patent: 5209410 (1993-05-01), Wichmann et al.
patent: 5236641 (1993-08-01), Allen et al.
patent: 5269670 (1993-12-01), Allen et al.
"The Waistband Phenomenon" article (no date).

Affiliated with

Also associated with

Rating

Apparatus and methods for applying conformal coatings to electro does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Apparatus and methods for applying conformal coatings to electro, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus and methods for applying conformal coatings to electro will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1566436