Laser eco-printing technology for silk fabric patterns

Abstract

In this study, silk microstructures and the yellowing mechanism have been investigated to develop laser eco-printing technology for silk patterns (SLEP). Carbonized microstructures are divided into bar-shaped clots and sludge materials with small holes. The former are created by the initial pyrolysis (melting) of raw silk on the fabric surface; and the latter are the combined result of the development of the former during in-depth printing. The chemical composition and structure of the thermogravimetry/pyrolysis features of raw silk under different atmospheres have also been investigated. The yellowing mechanism of silk after SLEP and the feasibility of SLEP are demonstrated by analyzing its thermogravimetry/pyrolysis properties. Silk fabric patterns printed by SLEP exhibit yellow chromaticity with 10% lightness, and their boundaries are clear and distinct.