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Application filed by Valmet Paper Machinery IncfiledCriticalValmet Paper Machinery Inc
Priority to FI952653ApriorityCriticalpatent/FI98394C/en
Publication of FI952653A0publicationCriticalpatent/FI952653A0/en
Publication of FI952653ApublicationCriticalpatent/FI952653A/en
Application grantedgrantedCritical
Publication of FI98394BpublicationCriticalpatent/FI98394B/en
Publication of FI98394CpublicationCriticalpatent/FI98394C/en
Application Of Or Painting With Fluid Materials
(AREA)
Road Repair
(AREA)
Road Paving Machines
(AREA)
Abstract
This invention concerns a method for evening out the coating mixture and for separation of surplus coating mixture on a paper or cardboard web. Ordinary scraper blades and bars or an air doctor 4 are used to scrape off the coating mixture. When an air doctor process is used, the coating mixture applied to the web 1 is evened out on the surface of the web 1 by blowing air at high speed from the narrow slot 16 in the air doctor 4 against the web 1. Since the impulse force of the air is low, according to the invention a solid substance is mixed into the air jet in order to improve the scraping effect. <IMAGE>
FI952653A1995-05-311995-05-31
Method and apparatus for scraping the coating butter from a web
FI98394C
(en)
Method for applying a liquid or pasty application medium to a continuous paper or cardboard web, and paper or cardboard machine for carrying out said method