• 한국재료학회:학술대회논문집
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• 한국재료학회 1997년도 한국재료학회 추계학술발표회
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• pp.119-119
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• 1997

• 대한의생명과학회지
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• 제15권3호
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• pp.187-197
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• 2009

Fingerprinting is a frontier technique that is the most frequently applied for human identification throughout the world. All citizens over 17 year old living in the Republic of Korea must be fingerprinted to obtain a certificate of resident registration. In Korea, for this reason, human identification through fingerprints has been far better developed and used efficiently both in crime scene investigation and in confirmation of an unidentified body. Scientific approaches have been made to accurately extract the metamorphosed fingerprints in various environments. Because most of the studies on fingerprinting have been accomplished with biometric techniques, researches on restoration of human dermal tissue and taking custody data after collecting fingerprints have been comparatively undermined. In this study, a newly innovative method for fingerprint extraction was developed using the polyester film with print powders and the high temperature-moisturizing method. Compared to the conventional fingerprinting method of paper with ink, minutiae numbers of fingerprints were greatly increased in polyester film with print powders after restoration of fingertips by high temperature-moisturization. This newly developed procedure would be an efficient fingerprinting technique which could be utilized in scientific investigation and in personal identification in the future. Furthermore, the new method for restoration and extraction of fingerprints are easy and inexpensive to practice for a number of human identification.

• 한국소성가공학회:학술대회논문집
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• 한국소성가공학회 2004년도 제5회 압연심포지엄 신 시장 개척을 위한 압연기술
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• pp.249-257
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• 2004

Drying and curing characteristics of PCM resins using the induction heater and short-wave infrared emitter module was studied to develop a compact oven system for the high speed CCL and post-treatment equipment. Drying of the polyester resins using the induction heater and infrared heater showed that the blistering tendency of polyester resin coating increased regardless of additives and colors of resins as the heating rate and/or dry film thickness increased. The blistering of polyester resin coating layer occurred when the heating speed was over than $25^{\circ}C/sec$ for the dry film thickness of $19\~20um$, which is the typical thickness of finish coating in CCL. So did it when the heating speed was over than $40^{\circ}C/sec$ for the dry film thickness over than 10 um. The heating efficiency of paint coated steels by the infrared heating was strongly dependent on the colors of paint coating and generally increased for the dark surface and/or coating. But the faster drying of the PCM resin coatings increased the blistering tendency of coating layer. The blistering limit for the typical finish coating by the infrared heating was estimated as the heating rate slower than $20^{\circ}C/sec$ regardless of colors of PCM resins.

• 한국식품과학회지
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• 제47권2호
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• pp.224-232
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• 2015

CP 처리의 CBPE 필름의 물리화학적 특성 및 생분해 특성에 대한 영향을 연구하였다. CP 처리는 CBPE 필름의 인장 강도, 신장률, 그리고 광투과도와 같은 물리적 특성에는 영향을 주지 않았으나, air-CP 처리는 CBPE 필름의 유연성, 수분 방벽 특성, 그리고 인쇄적성을 향상시켰다. Air-CP 처리는 저장 중 CBPE 필름 표면의 조도와 O와 N 원소를 포함한 작용기의 양을 증가시켰고, 인쇄적성, 열분해성, 그리고 미생물 분해성을 향상시켰다. 본 연구에서 CP 처리 후 CBPE 필름 표면에서 보여지는 노화 현상을 XPS 결과를 통해 확인할 수 있었다. 본 연구는 CP 처리가 CBPE 필름을 비롯하여 다른 생분해성 식품 포장재의 물리적 특성과 생분해성을 향상시킬 수 있는 기술로서 적용될 수 있다는 가능성을 보여주었다.

• 한국정보디스플레이학회:학술대회논문집
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• 한국정보디스플레이학회 2005년도 International Meeting on Information Displayvol.I
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• pp.620-622
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• 2005

DuPont Teijin Films (DTF) have developed a family of films engineered specifically for the flexible electronics market. $Teonex^{(R)}Q65A$ is a biaxially oriented crystalline polyester with an engineered surface and it is emerging as a competitive material for the base substrate in OLED displays and active matrix backplanes. This contribution will describe the properties of this film, its uniquely different property set compared to amorphous high performance films and discuss examples of the film in use in flexible electronic applications.

• 한국표면공학회지
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• 제32권3호
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• pp.257-264
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• 1999

Thin reflective films are synthesized by using PVD methods with a bright metal of Al or Ag. For purposes of improving the reflectance and adhesion of such films particularly, substrate bias was applied during sputtering (namely, ion-plating) to enhance the deposition process with higher energy. And we succeeded in fabricating a quality silver film which possesses an adhesion of $85{\;}Kg/\textrm{cm}^2$ and a high reflectivity of more than 96%. Both of reflectivity and adhesion are better in case of bias sputtering as controlled than nonbias sputtering, particularly the bias of 50-100 V showed most effective. The microstructures of sample films were examined by using various equipments and the XRD spectrum in particular showed that <111> direction is the preferred growth orientation.

• 폴리머
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• 제36권5호
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• pp.662-667
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• 2012

평판 디스플레이에 사용되는 PET 필름의 광학적 특성을 알아보기 위하여 필름 표면 굴절률, 필름 표면조도 및 필름 내부입자가 광투과율에 미치는 영향을 알아 보았다. 필름표면에 굴절률이 낮은 코팅층을 형성함에 따라 필름의 광투과율이 향상되었고, 최대의 광투과율을 가지는 코팅두께가 있음을 확인하였다. 표면 거칠기의 영향에 대해서는 표면조도를 나타내는 Ra를 입사 파장의 1/4 이하로 조절한 경우 광손실이 발생되지 않았다. 필름 내 무기입자는 입사된 광의 흡수 및 산란을 발생시켜 광손실을 증가시켰다.

• 한국의류학회지
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• 제19권2호
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• pp.317-328
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• 1995

The objective of this study was to determine the effects of low temperature plasma on the surface properties of polyester fabric with respect to wettability and water repellency. Highly wettable polyester fabric surfaces were obtained by oxygen treatment. The improved wettabililty of oxygen plasma treated fabrics decreased with aging time up to 30 days, and then the wettability remained relatively constant and still exhibited significant improvement compared to that of untreated polyester. Water repellency was significantly improved by tetratfluorocarbon plasma treatment. Such an improvement appears due to introduced fluo\ulcornerrine atoms or a thin fluorocarbon film on the fiber surface. Water repellency remained constant in fact, even after 150 days.

• 한국응용과학기술학회지
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• 제21권1호
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• pp.62-68
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• 2004

PU flame-retardant coatings (APHD) containing phosphorous were prepared by blending of hexamethylene diisocyanate-trimer, white pigment, dispersing agent, flowing agent, and previously prepared benzoic acid modified polyester (APTB) that contains phosphorous. Physical properties of the prepared APHD were examined. With the introduction of BZA (contained in APTB), the film viscosity and film hardness of APHD decreased. With the introduction of caprolactone group, the flexibility, impact resistance, accelerated weathering resistance of APTBs increased. Flame retardancy of the coatings was tested. In a vertical burning method, APHD shows 210${\sim}$313 seconds, and in a $45^{\circ}$ Meckel burner method, shows 1.3${\sim}$4.0$cm^2$ of char length, which indicates that the coatings are good flame-retardant coatings. Moreover, the amount of afterglow and flame retardancy of the coatings are decreased with increasing BZA content.

• 한국정보디스플레이학회:학술대회논문집
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• 한국정보디스플레이학회 2007년도 7th International Meeting on Information Display 제7권1호
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• pp.448-451
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• 2007

DuPont Teijin $Films^{TM}$ (DTF) have developed engineered substrates specifically for the flexible electronics market. $Teonex^{(R)}$ Q65, $Melinex^{(R)}$ ST506 and ST504 are biaxially oriented crystalline polyesters with the option of planarised surfaces. These films are emerging as competitive materials for the base substrate in OLED displays and active matrix backplanes. Given the demanding dimensional reproducibility requirements in the display applications, it is critical to control the several factors that can influence the film distortion in order to achieve the ultimate performance. This paper will discuss the impact of thermal stress, mechanical stress and the processing environment on dimensional reproducibility of polyester film and give examples of how this impacts on the film in device manufacture.