• Textile Coloration and Finishing
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• v.1 no.1
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• pp.54-62
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• 1989

The woven fabric composed of nylon 6 filaments was treated with aqueous solutions (20, 30, 40, 50, 60%) of formic acid at 3$0^{\circ}C$ for 10 minutes under unrestrained condition, and the shrinkage behavior and some kinds of properties were examined. The shrinkages of the constituent yarns and fabric were increased with formic acid concentration, but they were lower than that of the original filaments because of fabric-structural factors. And the shrinkage of the warp was lower than that of the weft because of the residual stress from weaving process. By the restraint forces such as fabric-structural factors and residual stress, the constituent filaments were damaged partially at 60% of formic acid concentration and the degree of damage on the warp was greater than on the weft. And though the fabric count were increased overall, the spacing between the warps was decreased prior to the weft and eliminated nearly at 60% of formic acid concentration. The thickness, tensile strength, elongation, and handle value of fabric were increased overall with formic acid concentration excepting that the tensile strength for both the warp and weft directions and the elongation for the warp direction were decreased instead by the damage of yarns. But the crease recovery was decreased except the case of the weft direction at 60% of formic acid concentration.

• Textile Coloration and Finishing
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• v.30 no.3
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• pp.199-207
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• 2018

In this study, the properties of polypropylene(PP) non-woven fabric spun under various conditions by the Melt-blown method were verified, and the deodorant content and deodorization of PP non-woven fabric after deodorant-treatment were investigated. PP non-woven fabrics are manufactured by varying the temperature of spin beam, hot air temperature and amount, the RPM of collector R/O and the distance between collector and spinneret, which affects the structure of the non-woven fabric. After that, the structural characteristics and air permeability of the non-woven fabric were measured. The experimental results show that the amount of air, the distance between the collector and the spinneret significantly affect the structural characteristics and air permeability of the PP non-woven fabric. And, regardless of the weight of the PP non-woven fabric, the deodorizing effect of UiO-66 MOF deodorant add-on ratio and content was higher.

• Proceedings of the KSR Conference
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• 2005.05a
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• pp.391-396
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• 2005

Salt water spray test and salt water immersion test were experimentally conducted in order to investigate the durability of fiber reinforced composites under salt water environment. The specimens were made of glass fabric reinforcement and phenolic resin. Mechanical test was performed to obtain mechanical properties such as tensile properties, flexural properties, and shear properties by varying with exposure times. Also dynamic mechanical test and FTIR were conducted to investigate a change in chemical structure as well as thermal analysis properties such as storage shear modulus, loss shear moduls, and tan ${\delta}$. According to the results, salt water environment has effected on mechanical properties and thermal analysis properties and especially the durability of glass fabric/phenolic composites were severely affected on salt water immersion environment rather than salt water spray environment.

• Journal of the Korean Society of Clothing and Textiles
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• v.21 no.6
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• pp.1010-1020
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• 1997

For this study, we did needlework of the sample considering practical aspects of production and consumption of silk, high-quality material for women's clothes, and then analyzed the state of the seam puckering after press and dry cleaning, estimated the Seam Puckering based on the mechanical properties of silk related to machine sewing, and examined the effects which Mechanical Properties have on Seam Puckering closely. Through this, we reach the following conclusion. 1. There are three types of seam puckering for each stage, which are caused bathe smoothness of the surface by press, and the difference between the shrinkage rates of fabric and sewing thread by Dry Cleaning. 2. In analyzing seam puckering classified by each step, seam puckering after sewing the fabric is related to WT negatively, while to RT and W positively. Seam puckering after sewing and pressing the fabric is related to WT, RC, MMD negatively and seam puckering after sewing, pressing anddry cleaning the fabric isrelated to WT negatively, too. 3. Concerning the mechanical properties of the sample with a little seam puckering, WT, LC, WC, RC, MMD, SMD is relatively large while RT, B, 2HB is small. 4. Judging from the result of estimating seam puckering based on mechanical properties, the estimate-formula is satisfied in this study.

• Journal of Fashion Business
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• v.20 no.3
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• pp.119-132
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• 2016

Weighting of silk fabrics have long been practiced in silk fabric trading based on the primary consideration of price-weight, and secondary one of quality improvement in handle, luster, and drape properties. Recent trend of practicing weighting of silk fabrics is, however, focused on the improvement of the handle, luster, drape, and other properties. During the finishing processes of synthetic fiber, nylon, comprising amide structure, include the use of tannic acid, especially in the dyeing. A multitude of studies are being implemented in terms of improving fastness to washing, fastness to light of dyed nylon product, or the light fastness of nylon 6 itself. In this study, the effects of various tannic acid treatments on the physical properties related to the handle of nylon 6 and silk fabrics are examined and reviewed. The effects of treatment condition of the tannic acid, e.g., the concentration of the aqueous tannic acid solution, treatment time, and temperature were investigated. As the concentration of the aqueous solution of tannic acid increased, the bending rigidity values of the silk and nylon 6 fabrics increased. The treated fabrics felt stiff to the touch. Within the mild conditions of bending employed in the bending measurement of KES, nylon 6 treated fabric specimen exhibited a trend of improvement of bending resiliency within the range of small bending deformation. The weight of treated fabrics have all increased. The air-permeability values decreased as the treatment concentration increased. However, the decrease tendency of air permeability values may be alleviated by adjusting the fabric count during the tentering or expanding processes, either by tension adjustment or heat treatment. Optimum conditions of the treatment for nylon 6 are 1.25% tannic acid concentration, bath temperature of $85^{\circ}C$, pH 3.1, and those for silk fabric treatment are 1.25% tannic acid concentration, bath temperature of $85^{\circ}C$, pH 3.1. The treatment conditions will lead to the improvement in the properties of fabrics for summer.

• Journal of the Korean Society of Clothing and Textiles
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• v.18 no.4
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• pp.515-523
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• 1994

This study was accomplished to investigate the mechanical properties and handle according to treatment processes and brushing condition. For this study, grey fabrics of blended ratio of polyester 65% : cotton 35% were bleached and dyed. These fabrics were then brushed 1, 3, 5 and 7 times. The mechanical properties were measured with a KES-F system and the mechanical data were then transformed into hand values by the conversion equation, that is, KN-201-MDY. The results obtained by the analysis are as follows; 1) The variation of mechanical properties was remarkable in the initial brushing of 1∼ 3 cycles for all of grey, bleached and dyed fabrics. The values of RT, 2HB, B, G, 2HGS, MMD and SMD were decreased and MIU, WC and T were increased with the increase of number of brushing . 2) LT, B, 2HB, G, 2HG, 2HGS, MMD, SMH and W of dyed fabrics which is coincident with the end use showed lower values than those of grey or bleached fabrics, but MIU, WC and T were higher 3) From the variation of hand value, stiffness of dyed fabric showed lower value than that of grey or bleached fabric. On the other hand, smoothness, soft feeling and total hand values of dyed fabric were higher. Especially, dyed fabric showed the highest total value at the 3 cycles of brushing condition.

• Textile Coloration and Finishing
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• v.29 no.2
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• pp.97-103
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• 2017

Polyketone fiber, a newly developed high strength fiber, has a tenacity and modulus similar to the p-aramid fiber, and can be used for reinforcing mechanical rubber goods(MRG), such as tires, hoses, and technical textiles. It will be expected for replacement of super fiber such as aramids and increasing the technical textile market share. This paper surveys the mechanical properties of polyketone fiber for technical textiles. For this purpose, dyed polyketone fabric is prepared, mechanical properties of coated and uncoated polyketone fabrics such as tensile strength, elongation and tear strength were examined before and after weather resistance test(temperature $63{\pm}3^{\circ}C$, humidity 60%, amount of power $0.35w/m^2$). The differences of mechanical properties between uncoated and coated fabrics for high functional technical textiles and composite materials are estimated through this study. The UV-stability of polyketone fabric showed obvious improvement after coating. After 168h(7day) of UV exposure, the coated fabric showed less deterioration in mechanical properties with the retained tensile strength and elongation at break greater than 22 and 17% of the uncoated polyketone fabrics values, respectively.

• Proceedings of the Korean Society of Dyers and Finishers Conference
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• 2008.10a
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• pp.49-50
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• 2008

Dyeing and levelness properties of dyed PET woven fabric using a ultra low liquor ratio laboratory dyeing machine have been compared with those of PET woven fabric using a regular laboratory dyeing machine. The dyeing and levelness properties of dyed fabrics using a ultra low liquor ratio laboratory were better than those of dyeing using regular laboratory.

• Proceedings of the Korean Society For Composite Materials Conference
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• 2004.10a
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• pp.135-138
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• 2004

Because the compressive properties such as compressive stiffness and compressive maximum strength of the fabric composite materials are essential to analyse the drape behaviour and estimate the quality of the final products, compressive tests of fabric composites with different stacking sequences were performed. Appropriate shape and dimensions for the compressive test specimens were prepared and several specimens with different conditions were tested and compared with each other.

• Fashion & Textile Research Journal
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• v.3 no.1
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• pp.35-41
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• 2001

Dyeing properties of silk fabric with onion shell were studied by investigating the effect of dyeing conditions, such as concentration of onion shell, dyeing temperature, dyeing time and pH, on dye uptakes. And also the effects of mordants and mordanting methods or color change and dye uptakes were investigated. For the practical use, the various color fastness of dyed and mordanted fabric were evaluated. The color fastness was improved when Fe mordant was added.