Process parameter definition for continuous dyeing and thermofixation based on Dianix disperse dyes on Polyester fabric with aNIR technology

  • Polyester fabrics are commonly dyed with the continuous disperse dyeing process and require a convection hot air dryer for drying and fixation of these fabrics. This convection hot air dryer is not only time-consuming compared to NIR drying but also energy intensive. For this reason, research was conducted to investigate if the newly developed advancedNIR® technology from Adphos Innovative Technologies GmbH is suitable for continuous disperse dyeing of polyester. There are specific parameters and temperatures which have been identified to help this technology be evaluated for its sustainable innovation potential for the textile industry. Eight disperse dyes were used from DyStar Colours Distribution GmbH, namely Dianix® XF2 (high energy) and Dianix® CC (medium energy). Trichromic colours (Dianix® Brown XF2/CC) have also been dyed to investigate the migration effect which was observed during the research. Different technology combinations were investigated for their potential application, especially spray application using rotatingPolyester fabrics are commonly dyed with the continuous disperse dyeing process and require a convection hot air dryer for drying and fixation of these fabrics. This convection hot air dryer is not only time-consuming compared to NIR drying but also energy intensive. For this reason, research was conducted to investigate if the newly developed advancedNIR® technology from Adphos Innovative Technologies GmbH is suitable for continuous disperse dyeing of polyester. There are specific parameters and temperatures which have been identified to help this technology be evaluated for its sustainable innovation potential for the textile industry. Eight disperse dyes were used from DyStar Colours Distribution GmbH, namely Dianix® XF2 (high energy) and Dianix® CC (medium energy). Trichromic colours (Dianix® Brown XF2/CC) have also been dyed to investigate the migration effect which was observed during the research. Different technology combinations were investigated for their potential application, especially spray application using rotating discs from Weitmann & Konrad GmbH & Co. KG / RotaSpray GmbH. These combined technologies could be a potential sustainable alternative process, which can be used in place of the convection hot air process, by replacing natural gas with electric power. Analysis of the final samples with optimized parameters shows improved levelness and fastness. Additional research is necessary to analyze the separate process steps in more detail.show moreshow less

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Author:Antwi Andy Buobu
URN:urn:nbn:de:bvb:1051-opus4-1342
DOI:https://doi.org/10.57944/1051-134
Advisor:Michael Rauch, Anett Matthäi
Document Type:Master's Thesis
Language:English
Date of Publication (online):2022/12/08
Publishing Institution:Hochschule für Angewandte Wissenschaften Hof
Granting Institution:Hochschule für Angewandte Wissenschaften Hof
Date of final exam:2022/11/25
Release Date:2022/12/08
Tag:NIR technology; aNIR technology; disperse dyes; energy efficiency; polyester dyeing; spray application
Page Number:187
Institutes:Ingenieurwissenschaften
Licence (German):License LogoCreative Commons - CC BY-ND - Namensnennung - Keine Bearbeitungen 4.0 International
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