Patent EA-002873-B1 (EA)
Title: Pressure feed coating application system
IPC: B05C3/12
Filed: 1999-05-18
Abstract: 1. A pressure feed coating application system for coating a web with a material wherein said pressure feed coating application system has a feed nozzle for dispensing fluid, said feed nozzle comprising a back seal that is a flexible blade. 2. The pressure feed coating application system of Claim 1 further comprising hydrodynamic end seals. 3. A pressure feed coating application system of Claim 2 further comprising: a) a metering surface, b) a reservoir, and c) a reservoir cavity, wherein the back seal is coupled to the reservoir, the end seals seal reservoir ends, so that the combination of the reservoir, the back seal, and end seals form a reservoir cavity for fluid, wherein the metering surface is a surface of the reservoir that meters fluid flow from the reservoir cavity. 4. The pressure feed coating application assembly of Claim 1 further comprising a stiffener, said stiffener coupled to said feed nozzle. 5. The pressure feed coating application assembly of Claim 1 further comprising a spring coupled to said feed nozzle so that the feed nozzle rotates as pressure from the fluid being dispensed builds up. 6. The pressure feed coating application assembly of Claim 1 further comprising a force sensor that monitors the force of said feed nozzle against a surface upon which the feed nozzle is dispensing fluid. 7. The pressure feed coating application assembly of Claim 1 further comprising a means of force adjustment of said feed nozzle against a surface upon which the feed nozzle is dispensing fluid. 8. The pressure feed coating application assembly of Claim 1 further comprising: a) a force sensor that monitors the force of said feed nozzle against a surface upon which the feed nozzle is dispensing fluid and b) a means of force adjustment of said feed nozzle against a surface upon which the feed nozzle is dispensing fluid. 9. The pressure feed coating application assembly of Claim 3 further comprising a force sensor that monitors the force of said feed nozzle against a surface upon which the feed nozzle is dispensing fluid. 10. The pressure feed coating application assembly of Claim 3 further comprising a means of force adjustment of said feed nozzle against a surface upon which the feed nozzle is dispensing fluid. 11. The pressure feed coating application assembly of Claim 3 further comprising: a) a force sensor that monitors the force of said feed nozzle against a surface upon which the feed nozzle is dispensing fluid and b) a means of force adjustment of said feed nozzle against a surface upon which the feed nozzle is dispensing fluid. 12. The pressure feed coating application assembly of Claim 4 further comprising a means of force adjustment of said feed nozzle against a surface upon which the feed nozzle is dispensing fluid. 13. The pressure feed coating application assembly of Claim 4 further comprising a force sensor that monitors the force of said feed nozzle against a surface upon which the feed nozzle is dispensing fluid. 14. The pressure feed coating application assembly of Claim 4 further comprising: a) a force sensor that monitors the force of said feed nozzle against a surface upon which the feed nozzle is dispensing fluid and b) a means of force adjustment of said feed nozzle against a surface upon which the feed nozzle is dispensing fluid. 15. The pressure feed coating application assembly of Claim 3 further comprising a spring coupled to said feed nozzle so that the feed nozzle rotates as pressure from the fluid being dispensed builds up. 16. The pressure feed coating application assembly of Claim 15 further comprising a force sensor that monitors the force of said feed nozzle against a surface upon which the feed nozzle is dispensing fluid. 17. The pressure feed coating application assembly of Claim 15 further comprising a means of force adjustment of said feed nozzle against a surface upon which the feed nozzle is dispensing fluid. 18. The pressure feed coating application assembly of Claim 15 further comprising: a) a force sensor that monitors the force of said feed nozzle against a surface upon which the feed nozzle is dispensing fluid and b) a means of force adjustment of said feed nozzle against a surface upon which the feed nozzle is dispensing fluid. 19.The pressure feed coating application assembly of Claim 16 further comprising a means of force adjustment of said feed nozzle against a surface pon which the feed nozzle is dispensing fluid. 20. The pressure feed coating assembly of Claim 1 wherein pressure feed coating assembly further comprises: a) a stiffener, b) a support spring, and c) a feed nozzle slide position/force adjuster, wherein the feed nozzle is coupled to the stiffener which is coupled to the support spring which is coupled to the feed nozzle slide position/force adjuster, wherein as fluid pressure builds up from fluid flowing from the reservoir cavity, the feed nozzle rotates to maintain a proper metering gap for a desired fluid film thickness. 21. The Pressure feed coating assembly of Claim 4, further comprising a means of adjusting the feed nozzle profile by deflecting the feed nozzle from the stiffener. 22. The Pressure feed coating assembly of Claim 15, further comprising a means of adjusting the feed nozzle profile by deflecting the feed nozzle from the stiffener. 23. The pressure feed coating assembly of Claim 22 wherein the means of deflecting the feed nozzle from the stiffener comprises ajustable jacking fixtures, and pull down fixtures. 24. The pressure feed coating assembly of Claim 23 wherein the means of deflecting the feed nozzle from the stiffener comprises adjustable jacking fixtures, and pull down fixtures. 25. The pressure feed coating assembly of Claim 24, whereas the jacking and pull-down fixtures are adjusted automatically. 26. The pressure feed coating assembly of Claim 1, further comprising a feed nozzle contact angle adjustment assembly for adjusting a feed nozzle contact angle with respect to a material being feed through the feed nozzle. 27. The pressure feed coating assembly of Claim 3, further comprising a feed nozzle contact angle adjustment assembly for adjusting a feed nozzle contact angle with respect to a material being feed through the feed nozzle. 28. The pressure feed coating assembly of Claim 1, further comprising a means of cleaning an applicator roll, said means comprising: a) a blade and b) a blade actuator wherein said blade is coupled to said blade actuator so said blade can be applied to a roll for roll cleaning. 29. The pressure feed coating assembly of Claim 3, further comprising a means of cleaning an applicator roll, said means comprising: a) a blade and b) a blade actuator where in said blade is coupled to said blade actuator so said blade can be applied to a roll for roll cleaning. 30. The pressure feed coating assembly of Claim 1, further comprising a means of cleaning the feed nozzle while coating continues to be applied. 31. The pressure feed coating assembly of Claim 3, further comprising a means of cleaning the feed nozzle.