Title:
METHOD FOR INSPECTING SURFACE SUBJECTED TO WATER REPELLENT TREATMENT
Document Type and Number:
Japanese Patent JP3314668
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a method for evaluating the characteristics of water repellent film, especially for inspecting a surface subjected to water repellent treatment by impregnating and swelling a polymer film with a liquid and observing shrinkage after the film is dried.
SOLUTION: The method for evaluating a surface subjected to water repellent treatment comprises a step for impregnating a polymer film 1 with a liquid, i.e., water or a solvent, a step for applying the impregnated and swelled polymer film 1 of a given size to a surface 3 subjected to water repellent treatment, and a step for evaluating the water repellent properties by evaporating the impregnated liquid and observing shrinkage of the polymer film 1 before and after evaporation. Furthermore, the polymer film 1 is colored by adding a dye to the liquid and the water repellent properties is evaluated by observing shrinkage of the polymer film before and after evaporation based on the gray level of the color.
Inventors:
Youichi Terai
Application Number:
JP17198497A
Publication Date:
August 12, 2002
Filing Date:
June 27, 1997
Export Citation:
Assignee:
TOYOTA JIDOSHA KABUSHIKI KAISHA
International Classes:
G01N13/00; (IPC1-7): G01N13/00
Domestic Patent References:
| JP933422A |
Attorney, Agent or Firm:
Takashi Ishida (3 others)