Surface energy measurement instrument for metal foil and measurement method using the same

A surface energy measurement instrument configured to apply a measurement reagent to a surface of metal foil to measure a surface energy of the metal foil, the surface energy measurement instrument comprising:

• a main body unit configured to store and discharge the measurement reagent;
• and
• an application unit configured to apply the measurement reagent from the main body unit to the surface of the metal foil,
• wherein the main body unit comprises:
• a reagent storage portion configured to store the measurement reagent;
• a reagent injection port located at an upper part of the reagent storage portion, the reagent injection port being configured to receive an injection of the measurement reagent therethrough into the reagent storage portion;
• a reagent discharge port located at a lower part of the reagent storage portion, the reagent discharge port being configured to receive a discharge of the measurement reagent therethrough;
• and
• a discharge amount adjustment portion connected to the reagent discharge port, the discharge amount adjustment portion being configured to adjust a discharge amount of the measurement reagent to be discharged from the reagent storage portion, and
• wherein the application unit comprises:
• a connection portion connected to the main body unit;
• a cotton ball located at a lower part of the connection portion, the cotton ball being configured to contact the surface of the metal foil to apply the measurement reagent to the surface of the metal foil;
• and
• a stopper located between the connection portion and the cotton ball, the stopper being configured to adjust a pressure applied to the cotton ball to control an application amount of the measurement reagent so as to be uniform.