Method for forming multilayered coating film

• Main Authors: OKUDA SHUJI, OGAWA TAKESHI, KOJIMA KEISUKE, EGAWA TAKAO, AMIYA SHUKO, AOKI TAKAMASA, IMAI TAKAHIRO
• Format: Patent
• Language: Chinese; English
• Published: 05.11.2014
• Subjects: APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL; PERFORMING OPERATIONS; PROCESSES FOR APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TOSURFACES, IN GENERAL; SPRAYING OR ATOMISING IN GENERAL; TRANSPORTING

The present invention provides a method for forming a multilayered coating film which comprises applying a first water-based base coating composition, thereafter applying a second water-based base coating composition without preheating the first water-based base coating composition, preheating the applied compositions, further applying a clear coating composition, and then curing the three layers, i.e., the films of the first water-based base coating composition, second water-based base coating composition, and clear coating composition, at the same time, wherein the first water-based base coating composition is a coating composition that contains a specific water-dispersible polyester resin, a specific water-dispersible acrylic resin, a water-dispersible urethane resin, and a melamine resin. With this method, it is possible to form a multilayered coating film that is excellent in terms of smoothness, reflected-image clarity, chipping resistance, and hardness.