Coating apparatus – Solid applicator contacting work – With work-handling or work-supporting
Reexamination Certificate
2005-03-15
2005-03-15
Edwards, Laura (Department: 1734)
Coating apparatus
Solid applicator contacting work
With work-handling or work-supporting
C118S212000, C118S244000, C118S256000, C118S063000, C101S157000, C101S169000
Reexamination Certificate
active
06866715
ABSTRACT:
A method and apparatus is disclosed for gravure coating a liquid reactive with the atmosphere onto a web. The gravure apparatus comprises an engraved gravure cylinder, an impression roller backing the web and pressing it onto the gravure cylinder to form a nip, a curtain or jet formation means to wet the surface of the gravure cylinder, and a doctor blade means for wiping excess coating liquid from the surface of the gravure cylinder prior to the nip. A shroud encompassing the gravure cylinder and the curtain or jet formation means creates a first zone between the nip and a partitioning baffle extending from the shroud, a second zone between the partitioning baffle and the doctor blade means, and a third zone between the doctor blade means and the nip. A gas non-reactive with the coating liquid is supplied to each zone by a gas distribution means such that the reaction rate of the coating liquid with the atmosphere is greatly reduced and the curtain or jet is not disrupted. In a particularly preferred embodiment, the gravure apparatus and shroud are enclosed by solid walls and doors.
REFERENCES:
patent: 2022635 (1935-11-01), Durham
patent: 2040961 (1936-05-01), Stouch
patent: 2141978 (1938-12-01), Greenhill
patent: 3508947 (1970-04-01), Hughes et al.
patent: 3632374 (1972-01-01), Greiller
patent: 3936549 (1976-02-01), Kohler et al.
patent: 4287240 (1981-09-01), O'Connor
patent: 4373443 (1983-02-01), Matalia et al.
patent: 4600608 (1986-07-01), Ankrett
patent: 4737486 (1988-04-01), Henzel
patent: 5114759 (1992-05-01), Finnicum et al.
patent: 5681389 (1997-10-01), Lobo et al.
patent: 5885660 (1999-03-01), Ruschak et al.
patent: 5976630 (1999-11-01), Korokeyi et al.
patent: 6228431 (2001-05-01), Lobo et al.
patent: 6426119 (2002-07-01), Yapel et al.
patent: 6558466 (2003-05-01), Hanumanthu et al.
patent: 6582515 (2003-06-01), Hanumanthu et al.
Anderson Jess A.
Gilkey Richard A.
Lobo Rukmini B.
Ruschak Kenneth J.
Wakefield David A.
Edwards Laura
Shaw Stephen H.
LandOfFree
Gravure method and apparatus for coating a liquid reactive... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Gravure method and apparatus for coating a liquid reactive..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Gravure method and apparatus for coating a liquid reactive... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3399856