Timo P Kiiha

US Patent:

6743478, Jun 1, 2004

Filed:

Feb 27, 2002

Appl. No.:

10/069662

Inventors:

Timo Kiiha - Menasha WI
Jukka Koskinen - Järvenpää, FI

Assignee:

Metso Paper, Inc. - Helsinki

International Classification:

B05D 130

US Classification:

427294, 427296, 427348, 427420, 118 50, 118 63, 118 68, 118324, 118DIG 4

Abstract:

A curtain coater and a curtain-coating method for coating a moving web of paper or board are described. The curtain coater has an applicator nozzle for applying a coating mix to the surface of the web in the form of a continuous curtain extending uniformly over the cross-machine width of the web. In one aspect, a doctoring means located upstream (in terms of the direction of travel of the web) from the applicator nozzle substantially removes the air boundary layer traveling on the surface of the web. In another aspect, the doctoring means comprises a suction nozzle for removing the air boundary layer. In yet another aspect, a gas nozzle located downstream from the applicator nozzle sprays gas on the coating curtain in order to help apply the coating mix to the surface of the web.

US Patent:

6849290, Feb 1, 2005

Filed:

Sep 17, 2001

Appl. No.:

10/380364

Inventors:

Jukka Mäkinen - Kerava, FI
Jukka Koskinen - Järvenpää, FI
Timo Kiiha - Appleton WI, US

Assignee:

Metso Paper, Inc. - Helsinki

International Classification:

B05D 312

US Classification:

427 8, 427356, 427444

Abstract:

A method for controlling the deflection and/or position of a deflection-compensated doctor blade support beam relative to a web. The movement range of the doctor blade support beam is divided into radial control sectors so that the working directions of compensation elements in the support beam essentially form interface limits of the radial control sectors. When the support beam is to be moved, a set point is selected toward which a reference point of the support beam should move. The specific control sector is then determined within which the set point is located and this control sector becomes the active control sector. Deflection of the doctor blade support beam employs these two compensation elements so that one is used for controlling the deflection in the x-axis direction of the coordinate system, while the other is used for controlling the deflection in the y-axis direction of the coordinate system.

US Patent:

6630026, Oct 7, 2003

Filed:

Nov 19, 2001

Appl. No.:

09/936546

Inventors:

Timo Kiiha - Menasha WI
Petri Parni - Chonburi, TW
Petri Joutjärvi - Kouvola, FI

Assignee:

Metso Paper, Inc. - Helsinki

International Classification:

B05C 302

US Classification:

118413, 118414

Abstract:

An apparatus for applying a treating mix onto the surface of a moving device in the coating of paper or board. The apparatus comprises a blade carrier ( ), doctor means ( ) attached to the blade carrier ( ), a front wall ( ) positioned a distance from the doctor means ( ), a device ( ) constituting the moving device, said device being arranged in conjunction with the front wall ( ) and the doctor means such that it forms a chamber ( ) with the front wall ( ) and the doctor means, and means ( ) for supplying treating agent into an area of the application chamber ( ) which is at least essentially opposite to the moving surface. To prevent streaks, a screen plate ( ) is fitted in the application chamber, at least partly dividing the application chamber ( ) such that with regard to the screen plate ( ), the doctor means ( ) is arranged on the opposite side thereof to the feed means for the treating agent.