B - Operations – Transporting – 05 – C
Patent
B - Operations, Transporting
05
C
117/71, 32/22.5
B05C 7/08 (2006.01) A22C 13/00 (2006.01) B05C 7/04 (2006.01) B05D 7/22 (2006.01)
Patent
CA 1173306
ABSTRACT OF THE DISCLOSURE A process and apparatus for coating the interior of a fiber-reinforced tube formed of cellulose hydrate in which a tube filled with a coating liquid is passed through a special conveying and pumping device which also serves to replenish the coating liquid. Above the level of the coating liquid, the tube is inflated with a support gas and 1 gradually flattened. The flattened tube then travels through a metering device made up of wipers in the form of doctor blades or rollers, which retain the major quantity of the coating liquid which is present on the inside surface of the tubing so that a thin, uniform film of the coating liquid is formed. The tubing is thereafter dried to remove the volatile constituents of the coating llquid, and is subsquently wound up.
399765
Kaelberer Heinz
Wolf Hans
Fetherstonhaugh & Co.
Hoechst Aktiengesellschaft
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