Additive Manufacturing (AM), which enables modeling of complex shapes and rapid prototyping, is attracting attention in various fields. In this study, the application of AM to the fabrication of clothing was examined. Although AM has been used to make clothes in the past, those are made of plastic chain mail, etc., and are not comfortable enough for daily wear. Therefore, a novel fabric-like material was developed that is made by filling cotton yarns on a flat surface and drawing a pattern made of flexible polymer on the surface of the cotton yarn by AM. Clothes made of this fabric-like material are expected to be as comfortable as conventional clothes because only the cotton yarns touch our skin when we wear the clothes. Moreover, this technology can be used to make a single garment using only a piece of cotton yarn, and the concept was demonstrated this by making a prototype. This garment can be recycled by removing the flexible polymer with a solvent or other means, and the continuous cotton yarn can be recovered and recycled.
This work used the dye extracted from black rice for the preparation of ecological and functional textiles, also the dyeing property was investigated with different pH (2.0 to 8.0), dyeing temperatures (50 °C to 90 °C), and dye concentrations (1 % to 9 % owf). Furthermore, the functionalities and the adsorption kinetics of black rice extract on wool were also explored. The results revealed that the material had excellent dyeing properties at 90 °C for 60 min, with a dye concentration of 5 % owf, a pH of 4.0, and the colorfastness was rated above 4. The inhibition rates of E. coli and S. aureus remained above 85.09 % and 85.78 % after 10 cycles of accelerated laundering, and the percentage of DPPH scavenging rate was over 80 %. Moreover, it was confirmed that the correlation coefficients (R2) of the pseudo-second-order model were higher than the pseudo-first-order model at various temperatures, and there was an increment in the adsorption quantities of black rice extract at equilibrium (qe) with an increase in temperature.