Seal application method

Abstract

A seal application method of applying a sealing material in a narrow portion serving as a hollow portion being formed inside a target object and communicating with outside, the seal application method including: arranging the target object such that a target surface inside the narrow portion faces downward; forming a brush coat by inserting into the narrow portion a brush coating device including at an upper portion thereof a brush portion with the sealing material adhered thereto, pressing the brush portion upward and rubbing the brush portion against the target surface, thereby applying the sealing material to the target surface; after forming the brush coat, inverting the target object such that the target surface faces upward; and, after inverting the target object, forming an edge seal being thicker than the brush coat by inserting an edge sealing device into the narrow portion and causing the edge sealing device to apply the sealing material onto the brush coat from above.

Dependencies are inferred from the claim text.