MAGNETIC-CHROMISM FILM HAVING EXCELLENT CHROMISM CONTRAST EFFECT

摘要

PURPOSE: A self color changing film having excellent color changing contrast effect does not need to use an electrolyte and a solution compared to a self color changing device of a conventional type of which a self color changing material dispersed in an electrolyte solution since the self color changing film uses a capsule type photonic crystal colloid. CONSTITUTION: A self color changing film having excellent color changing contrast effect comprises a self color turnable layer and a color layer. The self color turnable layer is a crystal colloidal photonic self color turnable layer (12). The color layer is a viscositive or adhesive color layer (13). A thickness of the self color turnable layer is in a range of 30 to 150 um. The self color turnable layer comprises 10 to 60 wt% of capsule type photonic crystal colloid self color changing particles, 5 to 20 wt% of a thermosetting binder or a photosetting binder, 20 to 80 wt% of water or an organic solvent, and 0.01 to 5 wt% of an additive.