pH pH pH response color change ink composition and pH response color change Label using the pH response color change ink composition and pH response color change Packaging material using the pH response color change ink composition

摘要

The present application relates to a pH-sensitive color-changing ink composition and a pH-sensitive indicator label and packaging material using the same, wherein the pH-sensitive color-changing ink composition is prepared by mixing a plurality of pH-changing dyes that change color depending on the pH range. sensitive indicator; a dissolving ink stirred with the pH-sensitive indicator and capable of dissolving the pH-sensitive indicator; A pH-sensitive label and packaging material using a pH-sensitive color-changing ink composition, characterized in that it includes; an adsorption compound that is stirred with the dissolving ink and can adsorb gas it is characterized by