• 한국염색가공학회지
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• 제15권6호
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• pp.33-38
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• 2003

This study surveys the effects of POY physical properties and processing conditions of belt texturing machine to the textured yarns. The various textured yarns are made with the variations of 1st heater temperature, draw ratio, velocity ratio, and the physical properties of these specimens such as yam linear density, tenacity, breaking strain, and wet and dry thermal shrinkages are measured and analysed with the various processing conditions of texturing machine. Especially, the thermal characteristics of the textured yarns, which are affected at the fabric hands and the determination of the processing conditions in the dyeing and finishing processes, are investigated through the thermal stress analyser and DSC experiments.

• 한국염색가공학회지
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• 제12권4호
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• pp.233-238
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• 2000

In this study, the control system of sodium hydroxide was demonstrated to systemize hydrolysis process in polyester dyeing. We mainly focused on the application method of acid-alkali titration for the polyester hydrolysis machine of liquor-flow type. Industrial pH meter with electrode type was used for identifying equivalence point. Three units which were analogue-to-digital card, microprocessor and digital output card were used to control NaOH concentration in the control part of the system. The yielded data are translated to the microprocessor through analogue-digital interfacing card. After calculating, NaOH concentration in NaOH storage tank was controlled through the digital output card and solenoid valves.

• 한국염색가공학회:학술대회논문집
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• 한국염색가공학회 2012년도 제46차 학술발표회
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• pp.85-85
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• 2012

천연염색은 독성과 환경오염이 적으며 합성염료로는 얻기 어려운 자연스러운 색감 등을 표현할 수 있는 장점에 비하여 염색과정 및 보관의 어려움, 재현성 부족, 낮은 염착량과 견뢰도, 염색과정에서 노동력이 많이 소비되어 대량생산의 어려움 등의 문제점으로 인해 아직 공업화되지 못하고 있다. 천연염료는 합성염료에 비해 색상이 차분하고 은은하며 변퇴색이 일어나도 안정된 색감을 나타낼 뿐 아니라 매염제에 의해 다양한 명도와 색상변화를 꾀할 수 있어 천연염색물에 대한 소비자의 수요가 최근 증가하고 있다. 본 연구에서는 천연염색 공정의 기계화를 통해 대량생산 및 재현성 확보가 가능한 100yd급 염색시스템을 설계 제작하고 천연염료인 소목을 이용하여, 면 및 견을 포함한 10종의 원단에 염액비(1:20), 매염제($FeSO_4{\cdot}7H_2O$)를 사용하여 염색 온도변화($20^{\circ}C{\sim}80^{\circ}C$)에 따른 원단별 염색특성을 평가하였다. 평가결과 세탁견뢰도는 온도가 증가할수록 대부분의 원단에서 견뢰도가 상승하였으며, 염색된 원단내의 색차(${\Delta}E$) 평가에서 대부분의 원단에서 1.0미만의 균염성을 나타내었다.

• 한국염색가공학회지
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• 제21권4호
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• pp.11-22
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• 2009

This study surveys the optimum processing conditions of ATY for PET braiding for automotive hoses. For this purpose, high tenacity and low shrinkable PET filaments with three types of deniers are prepared. Twenty seven ATY specimens are manufactured with variation of feed speed and overfeed on the air jet texturing machine. The physical properties of various yam according to the ATY processing conditions are measured and analysed for deciding the optimum ATY processing condition. Two kinds of ATY filaments made under the optimum air texturing conditions are processed with variation of tpm, heat setting temperature and heat setting time on the 2-for-l twister and setting chamber, respectively. The optimum twisting and heat setting conditions are decided through analysis of the yam physical properties. Finally, the braiding fabric specimens are manufactured using conventional filament and newly developed filament made under optimum twisting and heat setting conditions. The bursting strengths of these braiding specimens are compared and discussed between two types of specimens.

• 한국염색가공학회지
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• 제12권3호
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• pp.207-217
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• 2000

A new, high-efficiency ultrasonic fabric washing machine was developed to be an energy-efficient washing machine and to enhance fabric washing quality in washing processes of the dyeing and finishing process in the textile industry. This system is composed of ultrasonic wave generator, air blowing nozzle, torque motor for fabric tension control, and enclosed washing bath, multi-tube type exchanger, noiseless heater, air cylinder, expander roller, mangle upper and lower rollers, bend bar, dancer, shower spray nozzle, and solenoid valve, and so on. These elements are synergised for fabric washing. One of the very important principles is the low tension fabric running system. For an efficient washing effect, a counter flow system is also adopted. The new system also adopts the dancer and torque motor to control fabric tension and prevent fabric creasing. Shower spray nozzle, counter flow and overflow apparatus, and air-blowing apparatus are adopted to enhance the fabric washing effect. In this study, peach yoryu, exter, and moss crepe fabrics were washed by the general and ultrasonic washing systems under different conditions respectively. The washing efficiency was affected by the fabric running speed and characteristics of fabrics. Size content after washing increased with increasing the fabric running speed. The values in the general washing system were higher than those of the ultrasonic washing system. The changes of conductivity in the ultrasonic and the cooling bath were affected by the running time under the ultrasonic generating. The values of conductivity decreased as the experimental time passed.

• Composites Research
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• 제31권4호
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• pp.122-127
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• 2018

섬유강화고분자복합재료(CFRP, Carbon Fiber Reinforced Plastics)의 경량화는 자동차 및 항공 분야에서 끊임없이 요구되고 있으며, 구조용 폼과 CFRP를 혼합하여 샌드위치 복합재료로 사용되고 있다. 본 연구에서는 열경화성 소재인 에폭시 폼과 폴리우레탄 폼 및 열가소성 소재인 PET 폼과 PVC 폼의 조성 차이에 따른 폼의 형상 및 열 노화를 통해 변화되는 기계적 특성 변화를 관찰하였다. 성형한 에폭시 폼, 폴리우레탄 폼 및 상용화된 PET 폼과 PVC폼을 180도에서 열 노화시켰으며, 30, 60, 120, 180분의 노화시간에 따라 구조용 폼의 변화를 광학 현미경 및 만능시험기로 폼 셀의 형상 및 압축강도를 평가하였다. 궁극적으로 에폭시 폼이 가장 높은 2.6 MPa의 압축강도를 가졌으며, 열 노화 조건에서도 물성저하나 형상의 변화가 거의 발생되지 않았다. 이는 에폭시 폼이 타 구조용 폼에 비해 열 노화 조건에서 후경화되어 강직한 조성을 이루며, 타 구조용 폼과는 다르게 내열 특성이 우수하기 때문에 고온용 구조용 폼으로 적용하기 적합한 소재임을 확인하였다.

• 한국염색가공학회지
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• 제16권4호
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• pp.26-35
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• 2004

This study surveys the tension differences between Korean domestic and foreign looms and analyses fabric mechanical properties due to warp and weft tension differences using KES-FB system. Paper is divided by two parts. In this 1st paper, fabric is designed as 5 harness satin weave using 75d/36f warp and 100d/192f weft polyester filaments, and is woven by $Omega^\circledR$ rapier loom by Textec Co.Ltd and Picanol$-GTX^\circledR$ rapier loom by Picanol Co.Ltd respectively. These grey fabrics are processed on the same dyeing and finishing processes. Weavability is also analysed by measuring warp tension variation according to the warp position, the relationship between shed amount and the warp tension on one fixed heald frame is surveyed, and the relationship between end breaks and warp and weft tensions is also discussed.

• 감성과학
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• 제10권3호
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• pp.367-372
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• 2007

본 연구에서는 유체시스템을 이용한 나일론 필라멘트의 실크감성화 기술을 연구하였다. 이를 위해서 타스란 텍스쳐링 ATY 기계를 개조하였으며, 4가지의 40d/12f 나일론 소재가 개조된 ATY기계에서 기능성 약제를 이용하여 만들어졌다. 이들 소재사를 사용하여 4가지 직물이 제조되어 염색 가공 공정을 진행시켰다. 그리고 이들 직물시료의 수분율, UV차단성, 직물태등과 같은 여러 가지 물성을 측정하였으며, 이들 물성을 ATY텍스쳐링 조건과 기능제 처리조건과 비교 분석하였다.

• 한국산업융합학회 논문집
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• 제16권2호
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• pp.47-52
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• 2013

Aim of this study is to investigate the dimensional and shrinkage characteristics of the weft knitted fabrics with Polylactic acid(PLA) knitted yarn. This PLA knitted yarn was made of the biodegradability fiber. The structure of weft knitted fabrics that was utilized for this study is the plain stitch, which is the most basic structure among all weft knitted fabrics. As the stitch length is shorter, the stitch density, courses density, and wales density are more increasing. The stitch density increased as pre-treatment process and dyeing process progressed. On the contrary, the heat setting process made it decreasing. The MR(Machine Relaxation) and DR(Dry Relaxation) standard area shrinkage were increasing as wet process progressed and as the stitch lengths are long.

• 한국의류산업학회지
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• 제7권1호
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• pp.106-110
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• 2005

This research surveys the mechanical properties of worsted fabrics for garment according to the loom characteristics and fabric positions with relation to the warp and weft weaving tensions on the projectile and air-jet looms, which is previously surveyed in the 1st paper. For this purpose, the grey fabrics are processed in dyeing and finishing processes. The mechanical properties of the finished fabrics are measured and discussed with relation to the warp and weft weaving tensions of projectile and air-jet looms and the variations of the fabric mechanical properties according to the fabric positions are also surveyed for investigating the homogeneity of the tailorability and fabric hand.