Coating processes – Measuring – testing – or indicating
Patent
1992-09-21
1994-04-19
Beck, Shrive
Coating processes
Measuring, testing, or indicating
427211, 427428, 118712, 118227, 118249, B05D 128
Patent
active
053043910
ABSTRACT:
The invention concerns a method for regulation of the moisture profile of a paper or board web in a size press in which the paper or board web (W) is made to run through a nip (N) formed by the rolls (1,2) in the size press. Films (F.sub.1,F.sub.2) of size are applied to the faces (3,4) of the rolls in the size press by means of coating devices (10,20) so that these films (F.sub.1 F.sub.2) of size are transferred onto the paper or board web (W) in the roll nip (N). A size (F.sub.1) of substantially invariable profile is spread onto the face (3) of the first roll in the size press (5), and the profile of the size film (F.sub.2) to be spread onto the face (4) of the second roll is regulated so that the moisture profile of the web (W) at the reel-up can be made substantially invariable. The invention also concerns a film size press for implementing the method.
REFERENCES:
patent: 1195888 (1916-08-01), Wheelwright
patent: 3647525 (1972-03-01), Dahlgren
patent: 4732776 (1988-03-01), Boissevain
patent: 4848268 (1989-07-01), Sollinger et al.
patent: 4957770 (1990-09-01), Howarth
patent: 4966093 (1990-10-01), Sommer
patent: 5045342 (1991-09-01), Boissevain et al.
Bareford Katherine A.
Beck Shrive
Valmet Paper Machinery Inc.
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