Park and Kim Fash Text (2018) 5:26
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Denim fabric
Fig. 6 Drying velocity and absorption velocity of Hanji denim fabrics
produced in this study, were denim fabrics with medium stretch (S1) and high stretch (S2). The approximate structure of the existing denim fabrics (S1, S2), using the analysis of fabric structure, showed cotton yarns (navy color) and stretch yarns used as warp and weft, respectively. Most Hanji denim fabrics produced, except for the DF1 (C10) and the DF2 (C10), showed a higher elastic recovery rate than that of existing medium stretch denim fabric (S1). The high recovery rate trend resulted mainly in the denim fabrics using the rope-dyed yarn. Figure 6 shows the drying velocity and absorption velocity of Hanji denim fabrics. The drying velocity of Hanji denim fabrics increased as the fabric’s weight increased. This resulted because as the weight increases, the hydrophilic fiber of the fabric absorbs a large amount of moisture, leading to a longer drying time. Also, the existing denim fab- rics showed a similar tendency, and compared with Hanji yarn denim fabrics, the drying speed of the existing denim fabrics was almost the same (or slightly faster). On the other hand, the absorption velocity of Hanji denim fabrics showed significant differences. The Hanji denim fabric dried much faster than those of existing denim fabrics. This tendency is due to the high absorbency of Hanji yarn compared to cotton yarn. Especially, the tendency with Hanji yarn and core yarn with a 1:1 ratio showed a higher absorption velocity than that of the cotton yarn. Overall, the Hanji denim fabrics showed a higher absorption velocity than those of the existing denim fabrics (S1, S2). In addition, there was no significant difference in the drying velocity between the Hanji denim fabric and the existing denim fabrics even though the Hanji denim fabrics absorb more moisture compared to the existing denim fabrics.
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