• Textile Coloration and Finishing
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• v.10 no.2
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• pp.29-36
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• 1998

Poly(L-lactide) microcapsules containing hydrophilic penetrate were prepared by interfacial precipitation method through solvent evaporation from w/o/w emulsion. Effect of four determinative process parameters on the particle size distributions, morphologies, and release properties of microcapsules coated with poly(L-lactide) was investigated. Moreover, susceptible functional cotton fabrics treated with the mentioned microcapsules were prepared and laundry test up to 15 times were done to determine fastness properties. As a result, the prepared poly(L-lactide) microcapsules with a more sharp-distributive, rounder, and more permeable membranes could be prepared by means of protective colloid concentration, solution volume and stirring rate.

• 제어로봇시스템학회:학술대회논문집
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• 1990.10a
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• pp.190-193
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• 1990

Die finishing (polishing and lapping) after NC machining is characterized as one bottleneck process for reducing lead time. For automation of this typical manual work, a flexible polishing tool system using industrial robot has been developed. This tool system has three principal functions in order to achieve reduction of waviness, 3 D.O.F. compliance and constant pressure structure. This polishing tool shows that adaptability to free form surface is increased and programmability to various areas of die surface is also acquired.

• Textile Coloration and Finishing
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• v.4 no.4
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• pp.97-103
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• 1992

For manufacturing a high sorptive ACF, we used orthognal array experimental design to get optimum condition. The ability of ACF was measured by $CCl_4$ adsorption and showed those manufacturing conditions were effective in the order of treatment time>oxidative gas>treatment temperature. The optimal condition presented the maximum adsorption rate was at 90$0^{\circ}C$ for 6 minutes with $CO_2$/$H_2O$ gas in the PAN based ACF manufacturing process. The adsorption rate of developed ACF in this experiment was over 100%.

• Proceedings of the KSME Conference
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• 2007.05a
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• pp.544-548
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• 2007

In general, final width of hot strip should be accomplished in this stage because width reduction of strip hardly appears during typical finishing mill. However, it is difficult to control the width of strip in the roughing mill process as the horizontal rolling of strip is subsequently performed after the vertical rolling. It is therefore important to obtain the deformation rolling direction on strip width to minimize the width spread of strip during horizontal rolling after vertical rolling. Generally there is Sizing press type and Edger-roll type. The width reduction process in sizing press has small amount of width spread compared with the edger. However, productivity by the sizing press process is much lower than those of the edger. In this study, sizing press and Edger-roll process parameters in a sheet rolling mill were set at specified values and the effect of the change in these parameters on product quality and process performance were evaluated.

• Textile Coloration and Finishing
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• v.5 no.3
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• pp.188-193
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• 1993

Aqueous polyurethanes(APU) were prepared from polypropylene glycol(PPG), dimethylol propionic acid(DMPA), and isophoron diisocyanate(IPDI) following a prepolymer mixing process. APUs were applied as binder for nonwoven fabrics processing. APU treated nonwoven fabrics generally showed better tear and tensile strength as compared with the untreated ones. In addition, depending on the soft segment length and crosslinking density of the PU, tear strength of APU treated fabrics was favorably compared with solvent type treated one. Similar results were obtained with microfiber nonwoven fabrics, however, the effect was less significant.

• Textile Coloration and Finishing
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• v.6 no.1
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• pp.49-53
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• 1994

The transparent coloration of glasses has been successfully achieved by coated glass surface with squarylium dye by the sol-gel colored coating method. Treatment of sol-gel colored coating layer with HCI(g) greatly decreases the absorbance at λ$_{max}$, that increases exposure to $NH_{3}$(g) and the reversible color-colorless responce was extremely rapid.d.

• Proceedings of the Korean Institute of Surface Engineering Conference
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• 2015.11a
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• pp.208-208
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• 2015

자동차 및 관련회사에서 표면처리 관련하여 품질 및 디자인 개선을 위한 제품을 지속적으로 요구 하고 있으며 각국의 환경규제에 대응하기 위한 방법을 연구 중에 있습니다. 이런 요구에 부합하는 신규제품을 소개하고자 합니다. 1. Chrome Free Etch: 6가크롬을 사용하지 않는 친환경 플라스틱 에칭 프로세스 2. Niflex: 휨성을 향상 시킨 아연니켈 합금도금 3. Electrolac UV: 저온경화및 플라스틱에 적용가능한 칼라 증착 도금 4. Xtra-form film: 눈부심방지 및 3D 디스플레이 개선을 위한 하드코팅필름

• Proceedings of the Korean Institute of Surface Engineering Conference
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• 2011.05a
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• pp.205-206
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• 2011

Cu thin films for electromagnetic wave shielding were prepared on PET film and Ni-coated PET film by using Dry and Wet coating method, such as evaporation method, DC sputtering method and copper sulfate($CuSO_4$). After that, Zn thin film and Ni thin film were prepared onto the Cu thin films by using evaporation dry process and Ni electro plating wet process as a finishing treatment, respectively. The result of conductivity test and corrosion resistance test revealed Cu thin films which were formed with bigger grain size and high Cu composition rate have superior properties. Zn thin film by dry evaporation process and Ni thin film by wet electro plating process on Cu thin films were largely contributed to corrosion resistance. However, Ni thin film by wet process made conductivity of all specimen worse, the other hand, Zn thin film by dry process made it better to improve condictivity of specimens just prepared by dry process.

• Textile Coloration and Finishing
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• v.3 no.3
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• pp.44-56
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• 1991

진공하에서 일어나는 glow 방전을 이용해서 행하는 plasma 반응은, 표면 특이적(Surface specific)인, 또는 비파괴적인 처리공정(Non-destructive process) 으로서 주목되고 있는 기술이다. 전반은 plasma chemistry로서, 섬유가공의 기초가 되는 plasma를 이용한 반응에 대하여 정리한다. 또 다음 후반에는 섬유가공에 관한 응용예에 대해서, 특히, 최근 실용화를 이룩하고 있는 일본에 있어서의 plasma 응용의 연구개발들, polyester 섬유염색물의 농색화가공, 양모직물의 방축가공 등의 기술동향 및 실용화를 위한 장치개발 등을 소개코자 한다.

• Textile Coloration and Finishing
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• v.3 no.4
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• pp.29-38
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• 1991

섬유에 대한 plasma 처리의 process상 특징은, 첫째 건식공정 둘째 간략화된 가공, 이라고 하는 두 가지 특징을 들 수 있다. 일반적인 섬유가공에서는 처리시에 대량의 물이라든지, 증기를 사용하고, 또 다량의 열 energy를 표하기 때문에, plasma 처리와 같은 기상처리기술에 대한 기대가 그 무엇보다 크다. 만약, 종래의 습식공정에 의한 섬유가공공정의 전부나, 일부를, 이 건식방법인 plasma공정으로 바꿀 수만 있다면 절수라든지, energy절약에도 크게 이바지하여, 경제적인 효과가 클 뿐아니라, 염료와 염색조제들을 위시한, 가공처리제 등의 사용량도 크게 줄일 수 있어서, 공해의 미연방지에도 크게 이바지하게 될 것이다.