Park and Kim Fash Text (2018) 5:26
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Fig. 7 Denim wear products using manufactured Hanji denim fabrics
Therefore, it was considered that Hanji denim fabrics are suitable for summer use product development considering that general Hanji fabrics have pleasant cooling char- acteristics in addition to the excellent absorption velocity and drying velocity. This is because the Hanji yarn developed and used in this study is a paper yarn composed of mulberry and manila hemp fiber. The characteristics of fiber and structure of this paper yarn give its cooling characteristics to Hanji denim fabrics. Figure 7 shows design appli- cations in jean pants, shirts, and dresses that were manufactured using the Hanji paper denim fabric developed in this study. It showed no difference compared to the existing denim fabric (cotton fabric) in the process of fabric cutting, sewing, and its wearability. Conclusions With the popular use of denim fabric and of the advantages of paper yarns, we aimed to develop the Hanji denim fabric with Hanji combination yarn or with the Hanji paper yarn and core spun yarn in a 1:1 ratio as the weft. As the warp yarn, chemical vat and natural dyestuffs were used. We tested the properties of the developed Hanji paper yarns, combination yarns, and Hanji denim fabrics. The summary and conclusions are as follows. With regard to the physical properties of yarns, the breaking stress of Hanji paper yarn was lower than those of the cotton yarn and the core spun yarn, but the paper yarn maintained a relatively high breaking strain. The Hanji combination yarn has been improved the weaving ability by complementing the tensile strength of Hanji paper yarn. In the surface structure of the yarn, the rope-dyed cotton yarn showed a rather bulky structure while the cheese-dyed cotton yarn showed a compact structure. The structure of Hanji combination yarns showed that the Hanji single yarn and core spun yarn were tightly combined resulting in a stable form. The optimal weft inserting speed for the Hanji paper yarn was approximately 90% of the cotton yarn with the same yarn count. Also, the appearance of most Hanji denim fabrics produced showed no significant differ- ence from the existing stretchable denim fabrics indicating commercialization of Hanji denim fabrics as highly possible.
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