• Corrosion Science and Technology
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• 제21권2호
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• pp.121-129
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• 2022

A study on water-based epoxy coated on mild steel using the electroplating method was conducted to optimize the process parameters for dry film thickness to achieve superior paint quality at optimal cost in an automotive plant. The regression model was used to adjust various parameters such as electrode voltage, bath temperature, processing time, non-volatile matter, and surface area to optimize the dry film thickness. The average dry film thickness computed using the model was in the range of 15 - 35 ㎛. The error in the computed dry film thickness with reference to the experimentally measured dry film thickness value was - 0.5809%, which was well within the acceptable limits of all paint shop standards. Our study showed that the dry film thickness on mild steel was more sensitive to electrode voltage and bath temperature than processing time. Further, the presence of non-volatile matter was found to have the maximum impact on dry film thickness.

• Journal of the Optical Society of Korea
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• 제19권1호
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• pp.80-83
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• 2015

White reflective patterns are very difficult to fabricate, due to the scattering and reflection of light, especially when the pattern size goes down to micron size. A reflective white barrier structure of height $50{\mu}m$ and width $80{\mu}m$ was fabricated using dry-film resist as an intermediate reverse pattern. The reverse dry-film resist pattern was coated with an $SiO_2$ layer by sputtering, to protect the resist from chemical attack by the radical molecules in UV white resin. The UV white resin was applied on the dry-film resist pattern and then cured with ultraviolet light. The fine three-dimensional reflective patterns were finished by removing the dry-film resist.

• 한국표면공학회:학술대회논문집
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• 한국표면공학회 2011년도 춘계학술대회 및 Fine pattern PCB 표면 처리 기술 워크샵
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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.

• 한국식품영양학회지
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• 제22권4호
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• pp.696-700
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• 2009

대장균군 및 대장균의 정성실험에 건조필름을 이용할 수 있는지를 평가하였다. 대장균군의 정성실험에 있어서 lactose broth 배양법의 경우는 검출율이 가장 높은데 반하여 비교적 선택성이 낮고, 검출에 48시간이 소요되며, 실험 시마다 배지를 제조하여야 하는 등 번거로운 조작을 필요로 하였다. Desoxycholate lactose agar 평판배양법의 경우는 검출율이 건조필름보다 다소 높지만 유의적인 차이를 보이지 않는 정도이며, 실험시마다 배지를 제조하여 적당한 온도로 식혀서 분주하여야 하는 등 번거로운 조작을 필요로 하였다. 반면에 건조필름을 사용 할 경우는 검출율이 다소 낮지만 시료액의 균체농도가 1 cfu/$m{\ell}$ 이상에서는 E. coli KCCM11234의 경우 34.3%, E. aerogenes KCCM12177의 경우 67.4%, K. pneumoniae subsp. pneumoniae KCCM40890의 경우 58.3%의 검출율을 보이므로, 최대 3개의 배지에 접종하여 실험할 경우 시료 중에 대장균군의 존재 여부를 확인할 수 있는 수준이며, 선택성이 높고, 별다른 준비나 조작을 필요로 하지 않으므로 쉽게 대장균군을 검출하는데 사용할 수 있었다. 대장균의 정성실험에 있어서 EC broth 배양법은 검출율은 높으나 선택성이 떨어지며 실험조작이 번거로운 반면 건조필름법은 검출율이 다소 낮다. 시료액의 균체농도가 1 cfu/$m{\ell}$이상에서는 37.1%의 검출율을 보이므로 3개의 배지에 접종하여 실험할 경우 시료 중에 대장균의 존재 여부를 확인할 수 있는 수준이며, 선택성이 높고, 별다른 준비나 조작을 필요로 하지 않으므로 쉽게 대장균을 검출하는데 사용할 수 있었다. 단지 건조필름법은 균주에 대한 선택성이 높아서 손상된 균체의 검출이 어려웠으며 손상된 균체가 증식하는데 보다 많은 시간이 소요되므로 정확한 실험을 위해서는 대략 36시간 정도의 배양이 필요하였다. 전반적인 상황으로 판단해 볼 때 건조필름은 대장균군 및 대장균의 정성실험을 행하는데 있어서 현장에서도 손쉽게 실시할 수 있는 방법으로 기존의 방법을 대체하여 사용될 수 있을 것으로 판단되었다.

• The Korean Journal of Ceramics
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• 제7권2호
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• pp.55-57
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• 2001

For the fast dry of the aqueous tape, the process which water was replaced by organic solvent was proposed. Socalled, it was the solvent washing dry. Three organic solvents (methanol, ethanol and acetone) were selected for the washing solvent. The weight loss of the washed tapes was measured to evaluate the dry rate of the tapes and dried tapes were examined the generation of the cracks with the variations of the organic solvent and the washing time. Methanol, ethanol and acetone were available organic solvents for this method. The tapes washed in methanol, ethanol and acetone were dried rapidly for twenty minutes. After thirty minutes, the weight losses were not found any more. The solvent of the lower surface tension can decreases the crack of dried tape. If solvent substitutes water completely, though it was fast dried, crack can be eliminated.

• 대한조선학회논문집
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• 제49권5호
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• pp.433-439
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• 2012

Anticorrosive paint is the most widely used in shipbuilding and the dry film thickness is very important in terms of productivity and assurance of anticorrosive performance. However, it is difficult to achieve the recommended target film thickness because the dry film thickness depends on labor's skill in practice and is affected by a number of parameters, such as spray pressure, paint flow rate, tip size, spray distance, SVR(Solid Volume Ratio), etc. Present paper derives an empirical equation through the correlation analysis of parameters selected by spray experiments of anti corrosive painting in order to predict the coated status. Comparing the calculated results with practical data, we show that the empirical equation can successfully expect DFT(Dry Film Thickness).

• 한국정보디스플레이학회:학술대회논문집
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• 한국정보디스플레이학회 2003년도 International Meeting on Information Display
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• pp.826-828
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• 2003

With a new PDP transparent dielectric layer formation technique, we were able to make dielectric layer with high transmittance by using dry film type dielectric material. We optimized dielectric pastes for dry film and they showed good process properties in lamination , drying and firing.

• 자원리싸이클링
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• 제11권1호
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• pp.37-42
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• 2002

This study was conducted in order to remove Poly vinyl chloride(PVC) from the waste plastic film mixture. The fittings of Air Table was modified to increase the separation efficiency of PVC and PE(poly ethylene). PE and PVC was successfully separated from PVC-PE film mixture with the yield of PE 90% or more and with his grade of 99% or more, using the improved Air Table. The details of the separation condition and results will be discussed in this paper. Dry separation, Waste plastic film, PVC, Air Table. The details of the separation condition and results will be discussed in this paper.

• 한국식품위생안전성학회지
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• 제10권1호
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• pp.41-43
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• 1995

Dry rehydratable film (Petrifilm) method was compared with the standard pate count (SPC) method for estimation of total bacteria in ginseng products. Ginseng products (7 sample) was analyzed for total count by the SPC, and Petrifilm methods, respectively. In the case of ginseng tea, ginseng extract, ginseng extract pill, ginseng powder capsule, and ginseng extract tea, they showed non-significant values at the 1% level. However, the values of ginseng powder and tablet showed significant at the 1% level. These results generally indicate the suitability of the dry rehydratable film methods as alternatives to the SPC method for estimating of total bacteria in ginseng product samples except to ginseng powder and ginseng tablet.

• 대한조선학회논문집
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• 제47권5호
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• pp.743-749
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• 2010

Multi-nozzle spray painting procedure of the inorganic zinc shop primer was established in order to obtain uniform film thickness. The shop primer paint prevents the corrosion of steel block during shipbuilding. When the dry film thickness of shop primer is insufficient, rust will be generated on the steel block. Otherwise, thick coating of shop primer may be a problem of weld defect. So, it is important to obtain the uniform film thickness of shop primer. The uniformity of dry film thickness is affected by spray speed, distance from spray gun to target surface and overlapping span of spray path. In order to uniformly maintain coating thickness of shop primer, the coating procedure was established based on the correlation of shop primer spray variables.