Journal of the Korean Society of Clothing and Textiles (한국의류학회지)

The Korean Society of Clothing and Textiles (한국의류학회)
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Color Characteristics of 3D-Printed TPU Material Applied with Ultra-Violet Curable Digital Printing Process

자외선 경화형 디지털 프린팅을 이용한 3D 프린팅 TPU 소재의 색채 특성

  • Lee, Sunhee (Dept. of Fashion Design, Dong-A University) ;
  • Park, Soyeon (Dept. of Fashion Design, Dong-A University) ;
  • Jung, Imjoo (Dept. of Fashion and Textiles, Dong-A University) ;
  • Lee, Jungsoon (Dept. of Clothing & Textiles, Chungnam National University)
  • 이선희 (동아대학교 패션디자인학과) ;
  • 박소연 (동아대학교 패션디자인학과) ;
  • 정임주 (동아대학교 의상섬유학과) ;
  • 이정순 (충남대학교 의류학과)
  • Received : 2021.09.01
  • Accepted : 2021.10.14
  • Published : 2021.12.31
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Abstract

This study aims to confirm the possibility of Ultra-Violet (UV)-printed 3D printing materials using thermal polyurethane (TPU) with CMYK colors by applying an eco-friendly UV digital printing process. A UV-printed 3D printing TPU material was prepared with cycles of UV printing and CMYK colors. Dyeability of the 3D TPU samples with cycles of UV printing and CMYK were analyzed for thickness, weight, surface roughness, reflectance, colorimetry, and K/S values. The thickness and weight of 3D-printed TPU samples with cycles of UV printing are increased with overprints from 1 to 5. The surface roughness of 3D-printed TPU samples with increasing UV prints were decreased, meaning that the surface of TPU samples becomes gradually smoother. The reflectance spectra of CMYK UV-printed TPU samples showed the surface reflectance within each characteristic wavelength of CMYK. The 3D-printed TPU samples, subjected to UV printing twice or more, showed low surface reflectance. After examining the L*a*b* of the 3D-printed TPU samples by the cycles of UV printing, the study found that the more UV got printed more than 2 times, the closer the color to each CMYK.

Keywords

Acknowledgement

본 연구는 2021년도 정부(과학기술정보통신부)의 재원으로 한국연구재단의 지원을 받아 수행된 기초연구사업임(No.NRF-2019R1A2C2084041).

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