2005 Volume 61 Issue 9 Pages 256-260
In a previous paper we reported that polyester fabrics could be dyed in medium depth with vat dyes by the pad/dry/thermosol process. In this paper nylon 6 and triacetate fabrics were dyed with five vat dyes by the same way as that of the polyester fabrics. As the materials, scoured nylon 6 stunner and triacetate habutae fabrics were padded with a solution of the dye and the dissolving agent, PEG 400. After drying the fabrics were treated by the thermosol process under the condition of 200°C/3min for the nylon 6 and 190°C/3min for the triacetate fabrics. Medium color depth was obtained for all dyes. The treated fabrics were soaped, and subsequently their dyeing fastness such as light, laundering, chlorine, and sublimation was evaluated. Generally, the dyeing fastness was excellent except for the light fastness of the dyed nylon 6 fabrics and the rubbing fastness of the dyed triacetate fabrics. Furthermore, KES (Kawabata Evaluation System) shearing and bending measurements were carried out to investigate the effect of the thermosol treatment on the mechanical property of the fabrics. Shearing parameters, G, 2HG, and bending parameters B and 2HB of nylon 6 fabric increased generally, whereas those of the triacetate fabric decreased by the treatment. It seems that nylon 6 fabric was changed to slightly crisp, while that of triacetate fabric was softened a little by the treatment. Additionally, the change of density and X-ray diffraction were obtained in relation to the fine structure of the fibers by the thermosol process. They were little affected by the treatment.
