Title:
MANUFACTURING METHOD AND MANUFACTURING APPARATUS OF TUBE HAVING COATING FILM ON INNER SURFACE
Document Type and Number:
Japanese Patent JP2019181385
Kind Code:
A
Abstract:
To provide a manufacturing method and a manufacturing apparatus of a tube having a coating film on an inner surface on which the coating film of a uniform thickness can be formed on the inner surface of the tube.SOLUTION: A manufacturing method includes: a liquid introducing step of introducing a coating liquid 3a in a tube 2 from one end of the tube 2 with both ends opened, holding both ends of the tube 2 in a position higher than a liquid level S of the coating liquid 3a, and maintaining the coating liquid 3a in the tube 2; a coating process of coating the inner surface of the tube 2 with the coating liquid 3a by moving the coating liquid 3a to other end side while pulling up the one end of the tube 2 upward; and a drying process of forming the coating film 3 by drying the coating liquid 3a which coats the inner surface of the tube 2.SELECTED DRAWING: Figure 1
Inventors:
KASHIMURA SEIICHI
KISHI MASAMICHI
WATABE TAKANOBU
TANAKA KOTARO
KUDO KIMIKA
KISHI MASAMICHI
WATABE TAKANOBU
TANAKA KOTARO
KUDO KIMIKA
Application Number:
JP2018076579A
Publication Date:
October 24, 2019
Filing Date:
April 12, 2018
Export Citation:
Assignee:
HITACHI METALS LTD
International Classes:
B05D1/30; B05C3/20; B05D3/00; B05D7/22
Attorney, Agent or Firm:
Hirata International Patent Office