METHOD OF COATING A FIBROUS WEB WITH A CURTAIN COATER

摘要

The invention relates to a method of coating a fibrous web by means of a curtain coater, in which method the coating color is subjected to a degasification treatment before supplying it to the coater. The method comprises using in the degasification process a vacuum degasifier for eliminating harmful defects caused by a gas content of the coating color, said degasifier being supplied with a coating color having a gas content within the range of about 2 to 35%, and that the degasification is conducted in such a way that the air content of the coating color is reduced to the value of about 0 to about 0,25%.