• 한국잠사곤충학회지
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• 제36권1호
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• pp.58-61
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• 1994

견과 합성 섬유의 단점을 서로 보완하여 새로운 성능을 가지는 신소재를 개발하기 위하여 견사와 나이론사와의 복합사를 제조(이하 S/N 복합사)하고 이들 복합사 스타킹에 대하여 품질을 평가한 결과는 다음과 같다. 1. SEM으로 S/N 복합사로 제편한 스타킹을 관찰한 결과 나이론사는 매끈하게 보이는 반면 견사는 약간 불규칙하게 나타나서 쉽게 판별할 수 있었으며 견사와 나이론사가 서로 잘 포합된 부분과 견사끼리 합쳐진 부분이 발견되었다. 2. S/N 복합사 스타킹의 흡수속도는 나이론 스타킹에 비하여 4~8배 높았고 무연보다 가연할 경우가 높았다. 흡수율에 있어서도 S/N 복합사 스타킹이 나이론 스타킹에 비하여 3배 이상 높았다. 3. 수축율을 보면 상온수에서는 나이론 스타킹과 S/N 스타킹간에 큰 차이는 없었으나 비등수에서는 나이론보다 S/N 스타킹편이 약간 많이 수축되었다. 한편 스타킹간의 수축율과 수축탄성율은 큰 차이는 없었다. 4. S/N 복합사 스타킹의 착용시험 결과 보온성, 촉감은 나이론 스타킹보다 우수하였으나 수축성은 나이론 스타킹에 미치지 못하였다. 그러나 종합적인 호감도는 나이론 스타킹에 비하여 우수한 것으로 나타났다.

• 한국염색가공학회지
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• 제35권3호
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• pp.169-178
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• 2023

The extended use of polyester nowadays has increased the amount of waste polyester (PET) released into the environment. Although these materials don't directly harm living things or the ecosystem, their inability to biodegrade remains one of the major global threats, driving up the amount of solid waste made up of PET. Environmental concerns have approved an increasing interest in recycled PET however the production of recycled PET with sufficient mechanical properties is still a challenge. Recycled Polyester (rPET) yarns are inexpensive and have the potential to acquire better mechanical characteristics through physical treatments, particularly by using technically simple method like uniaxial drawing. This study inspected the drawn behavior of virgin PET yarns and rPET yarns under various drawing parameters by first analyzing the initial material characteristics of both yarn. The impact of stretching on mechanical and morphological properties was also investigated. The results showed that virgin PET has better properties than rPET yarn; however, mechanical properties resembling virgin PET are achieved after optimizing the draw ratio.

• 한국염색가공학회지
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• 제11권2호
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• pp.9-18
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• 1999

In order to establish fundamental data for the betterment of Polyester microfiber fabric handle, a study by using fixed warp of ITY yarn samples with P/F, DTY, and ITY weft yarns was performed. For this purpose the samples of total 27 kinds were prepared. That is, each sample yarn was twisted in three ways and for each twisted yarn the fabric structures were modified in three ways, plain, twill, and satin. The examination was done by focusing on the point of the change of handles and the characteristics of the mechanical properties of the samples with the change of yarn and the fabric structure. The handles and the mechanical properties were examined with the KES-F system suggested by Kawabata. The results were as follows : 1. WT and MIU increased with increasing the twist. By comparing WT and MIU by yarn, DTY was higher than P/F. It appeared that twill and satin were higher than plain. 2. The bending rigidity change in DTY with increasing the twist was not significant, however in P/F it appeared apparently decreased with increasing the tlvist. Also, it appeared that when using P/F as weft the bending rigidity was higher than when using DTY and the twill structure appeared higher than the satin structure. 3. In shear force the increasing rates of plain and the twill were higher than satin. When DTY and P/F were used as weft, the shear force was higher in ITY and DTY than in P/F case. 4. Koshi appeared higher in the order of plain, twill and satin. When DTY and P/F were used as the weft Koshi increased with increasing the twist in plain, however in twill and satin it appeared to decrease. In hand value ITY(=7.5) appea.ed to be highe. than DTY and P/F(=6.5). 5. In all cases Shinayakasa decreased with increasing the twist. The hand values observed that satin was =4, twill was =3, and plain was =1.5. 6. Fukurami showed no significant change with increasing the twist in DTY, however in P/F and ITY it decreased.

• 한국염색가공학회지
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• 제16권5호
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• pp.54-61
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• 2004

This research surveys the differences of fabric mechanical properties with the different looms and the fabric positions according to the warp and weft yarn tensions on the Vamatex and Omega-Panter looms respectively. For this purpose, the grey fabrics woven by PET filament using two test looms are dyed and finished. The processing shrinkages are measured on each processes such as dryer, scouring, pre-set, dyeing and final-set using the fabric density and width. The mechanical properties of the finished fabrics are measured and discussed with relation to the warp and weft yarn tensions of the two looms and the fabric positions. In addition, the fabric thickness according to the fabric positions such as right, left selvedges and center of the fabrics is also measured and discussed with the characteristics of the Vamatex and Omega-Panter looms.

• 한국의류학회지
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• 제42권4호
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• pp.561-570
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• 2018

This study defined the changes of mechanical properties of silk fabric according to bias angles and investigated the influence of bias angles and fabric characteristics on hand value. For the experiments, 4 types of commercial silk plain weave fabrics were chosen. All fabrics had the same density, but different yarn characteristics. Fabric samples were cut into 12 different bias angles between $0^{\circ}$ and $165^{\circ}$ with $15^{\circ}$ gap and measured for tensile, shear, bending, surface properties by the KES-FB system. As a result, most mechanical parameters showed an asymmetry shape with $90^{\circ}$. The most flexible and easiest angles are $45^{\circ}$, $135^{\circ}$. Furthermore, the bias angles of silk fabrics were classified into three clusters with mechanical properties such as WT, 2HG, 2HG5, B, and SMD. The parameters according to fabric samples showed significant differences at WT, RT, B, 2HB, and MIU. It showed bigger effects as yarn fineness; in addition, twists were higher except RT. The results of hand value indicated that Koshi and Hari were highest with a bias angle of $75^{\circ}$; however, Shinayakasa was highest at bias angle of $45^{\circ}$. Finally, Shari was lowest at $45^{\circ}$.

• 한국의상디자인학회지
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• 제16권1호
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• pp.117-123
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• 2014

This paper examined dyeing using sulfur dye with nylon and the characteristics of high gauge knitting for generating high functionality including light weight, wind resistance and elasticity using fine nylon threads. Yarn tension, stitch field and knitting speed of high and fine gauge knitting were measured. The influence of reducing agents on sulfur dye, optimum dyeing conditions and fastness features in nylon dyeing were analyzed. The analysis results are presented below. When nylon (Hyoseong, 40d/34f) and spandex (Hyoseong, 20d) for use as hosiery yarn were used to knit high gauge and flat weave, 44 gauge, the effective knitting conditions were a stitch field over 8.2cm in 1 course length, yarn tension of less than 5g and knitting speed below 18rpm. Nylon dyeing using sulfur dye showed effective results when a rongalite reducing agent was used at more than 10% o.w.f. and dyeing was maintained at $98^{\circ}C$ for 30 minutes. For dyeing nylon and spandex composite using sulfur dye, color fastness in washing, water, daylight and friction were higher than Class 4 or 5, which indicated a superior property. The analysis results verified that the existing problems in nylon dyeing could be solved by using sulfur dyes that don't use heavy metals due to superior fastness and therefore quality, high gauge nylon knit products could be produced.

• 한국전기전자재료학회논문지
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• 제33권4호
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• pp.321-325
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• 2020

Atmospheric environmental problems have a major impact on human health and lifestyle. In humans, inhalation of nitrogen oxides causes respiratory diseases, such as bronchitis. In this paper, thermal analysis of a gas sensor was carried out to design and fabricate a wearable nylon-yarn gas sensor for the detection of NO_x gas. In the thermal analysis method, the thermal diffusion process was analyzed while operating the sensors at 40 and 60℃ to secure a temperature range that does not cause thermal runaway due to temperature in the operating environment. Thermal diffusion analysis was performed using the COMSOL software. The thermal analysis results could be useful for analyzing gas adsorption and desorption, as well as the design of gas sensors. The thermal energy diffusion rate increased slightly from 10.05 to 10.1 K/mm as the sensor temperature increased from 40 to 60℃. It was concluded that the sensor could be operated in this temperature range without thermal breakdown.

• 한국의류학회지
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• 제20권1호
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• pp.228-238
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• 1996

The purpose of this study was to evaluate the effect of chacteristics of knit fabrics on the microclimate of the skin simulating system. To determine the effect of characteristics of knit fabrics, vapor state of sweat pulse was simulated in the closed system. Different contents of fibers such as cotton, wool and polyester with different yarn size and knit types were chosen for specimens. The changes of humidity and temperature of air layer in the simulated systems were measured. Buffering indices, $K_d$ and $\beta_r$, were determined by considering $\alpha_p, \DeltaP_{max}, t_{max}, and tan\beta$. Physical properties of knit fabrics such as thickness, porosity, air resistance and moisture vapor transport were measured. Results showed that vapor pressure of wool was lower than cotton or polyester This was attributed to the hydrophilicity of wool which absorbed moisture rather quickly and retained in the knit fabric. The time to decrease vapor pressure was faster for polyester than cotton or wool. As a result, $K_d$ was in the order of wool> polye, item> cotton. $\beta_r$ of wool was rower than cotton or polyester due to its lowers porosity and slower desorption rate. For the yarn size, $K_d$ was in the order of 80's> 60's> 30's; thinner and lighter yarn showed better water vapor transport property. For knit type, buffering capacity of single jersey was better than interlock knit fabric. Statistical analysis showed that the air permeability was the most influential factor far the water vapor transport properties.

• 복식
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• 제62권4호
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• pp.91-106
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• 2012

The purpose of this study was to offer some directions for the design of men's knitwear and provide basic data helpful for design conception and product development for creative and unique men's knitwear. As for the methodology, the investigator examined the works of these following ten designers that consistently participated in the men's Milano Collection for the last ten years from 2001 S/S to 2010 F/W: Burberry Prorsum, Costume National, D & G, D squared, Dolce & Gabbana, Giorgio Armani, Gucci, Iceberg, Prada, and Vivien Westwood. We identified the design elements expressed in knitwear, categorized examples for each element, and reviewed their characteristics. The results of this study are as follows. The designers usually adopted the H-silhouette with some room until 2006, after which the slim tubular silhouette became prevalent. Most of the designers made knitwear with normal yarn and expressed them by dyeing or printing regardless of seasons, which meant the usage level of fancy yarn was low. The much usage of the basic pattern was particularly salient. The most popular basic structure was plain, which was followed by rib and color pattern, which included the jacquard and intarsia pattern. The designers presented thick outer items made of thick yarn for F/W seasons and many thin inner items made of thin yarn for S/S seasons. The popular colors were brown from the Red Group(R) and beige from the Orange Group (YR) regardless of seasons. When achromatic colors were used a lot, there was a development of various grey shades. For the most used basic structure, plain, the designers employed such technical methods as printing, pleat treatment, and dyeing in high frequency.

• 감성과학
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• 제10권4호
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• pp.623-629
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• 2007

최근 호주의 CSIRO에서 개발된 고광택 wool 섬유인 "옵팀"$^{(R)}$ 이 수입되어 고감성의류 제조에 산업화 되고 있다. 그러나 "옵팀"$^{(R)}$ 섬유의 가격이 너무 비싸 소재수급이 원활치 못한 실정이다. 본 연구에서는 호주에서 개발되어 상용화되고 있는 기술인 $Optim^{(R)}$ wool 연신기술과는 다른 물빨래가 가능하며 광택이 있으며 낮은 생산 코스트를 가지는 소모연신사를 개발하는 것을 목적으로 한다. 이를 위해서 연신사가 개발된 연신기계를 이용하여 만들어지며 이를 사용하여 고감성직물을 제직하였다. 이들 직물시료의 여러 가지 물성을 측정하고 의류의 봉제성과 의복형성성능과 같은 의류의 특성이 분석되었다. 이 연구를 통하여 마지막 목적인 옵팀섬유와 같은 고광택을 가진 소모 연신사를 사용하여 고감성직물을 만드는 것이 이루어졌다.