総説 特集「機能性フィルムの生産技術」
ウェットコーティング方式の特徴について（単層及び多層）
2019 年 56 巻 2 号 p. 80-84
詳細
2019 年 56 巻 2 号 p. 80-84
Wet coating is a film manufacturing method in which a coating solution is applied to a wide and long substrate and is dried to produce a target functional layer. The coating solution contains water and organic solvent systems, but is difficult to apply due to the high surface tension of the water system in the coating solution.Therefore, various measures are necessary for the production of non-defective products. The functional layer can consist of a single layer up to a dozen or more layers, such as those found in photographic light-sensitive materials. Further, the coating speed is approximately 20 to 500 m/min for plastic substrates and can achieve a high speed of approximately 1000 m/min for paper substrates. The following paper outlines the features of the single-layer and multilayer coating methods.
