Printing with Moisture-sensitive Ink on a Nonwoven Fabric

Abstract

Recently, the development of high-value-added products using printing technology has become commonplace. We have developed and introduced a new type of indicator for such high-value added products. The HUMIJUDGE card features a series of printed humidity indicators. To create this card, we use a nonwoven fabric on which we print a moisture-sensitive ink that can sense the level of humidity. Depending on the humidity, the color of the ink varies from blue to colorless. The use of a nonwoven fabric results in the shedding of fewer particles than a cobalt chloride indictor that uses a paper matrix. To prevent color omission when moisture-sensitive ink is printed on a nonwoven fabric, we divide the ink into multiple batches and apply it to the surface to be coated. Because a minimum number of particles are shed, we can pack this card with products that demand a high level of cleanliness.