• Title/Summary/Keyword: Laminated Film

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Characteristics of Water Vapor Sorption Phenomena of Powdered Foods (건조분말 식품의 수분 특성에 관한 비교 연구)

  • 박길동;김동원
    • Journal of Ginseng Research
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    • v.6 no.1
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    • pp.30-37
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    • 1982
  • This study was conducted to investigate the water vapor permeability of packaging film, Al- foil laminated paper, and sorption properties of dehydrated and powdered foods. The results are as fellows. 1. Absorption rate of each products was greately affeoted by physicochemical properties of foods rather than initial moisture contents of the products. 2. The absorption rate of each products were in the order of freeze dried coffee, spray dried coffee, freeze drie4 ginseng extract, spray dried ginseng extract, ginger tea, black tea, citrus juice Powder and ssang wha tea. 3. Most of the products such as freeze dried coffee, spray dried coffee, freeze dried ginseng extract, ginger tea and black tea have shorter than a month of shelf life. 4. The stability of the products were greatly affected by its desorption properties than the degree of desorption of moisture. 5. Water vapor permeability of packaging materials which are laminated Al-foil with polythylene and glassin paper were mainly affected of thickness of Al-foil and polyethylene.

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Demonstration of Alternative Fabrication Techniques for Robust MEMS Device

  • Chang, Sung-Pil;Park, Je-Young;Cha, Doo-Yeol;Lee, Heung-Shik
    • Transactions on Electrical and Electronic Materials
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    • v.7 no.4
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    • pp.184-188
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    • 2006
  • This work describes efforts in the fabrication and testing of robust microelectromechanical systems (MEMS). Robustness is typically achieved by investigating non-silicon substrates and materials for MEMS fabrication. Some of the traditional MEMS fabrication techniques are applicable to robust MEMS, while other techniques are drawn from other technology areas, such as electronic packaging. The fabrication technologies appropriate for robust MEMS are illustrated through laminated polymer membrane based pressure sensor arrays. Each array uses a stainless steel substrate, a laminated polymer film as a suspended movable plate, and a fixed, surface micromachined back electrode of electroplated nickel. Over an applied pressure range from 0 to 34 kPa, the net capacitance change was approximately 0.14 pF. An important attribute of this design is that only the steel substrate and the pressure sensor inlet is exposed to the flow; i.e., the sensor is self-packaged.

Biaxial integrated optical film for VA mode LCD's made from in-situ photopolymerised reactive mesogens.

  • Kim, Kyeong-Hyeon;Lyu, Jae-Jin;Chung, Dong-Hoon;Verrall, M.;Slaney, K.;Perrett, T.;Parri, O.;Lee, Seung-Eun;Lee, Hee-Kyu
    • 한국정보디스플레이학회:학술대회논문집
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    • 2004.08a
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    • pp.773-775
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    • 2004
  • For high end, large area displays, all current LC modes require some degree of optical compensation to improve the front of screen viewing experience. Currently most optical films are laminated to the outside of the LCD cell, between the glass and polariser. In this paper we wish to show how it is possible to integrate the compensating optical film within a VA mode LCD cell. The paper will describe the process of making the biaxial film through the process of in-situ photopolymerisation of an aligned film of reactive mesogens in the cholesteric phase using polarised UV light. The film can be made on the colour filter array side of the LCD panel. In addition the process of fabricating a VA mode LCD containing this film will be described and the performance of this module will be presented

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Antioxidant Packaging as Additional Measure to Augment CO2-enriched Modified Atmosphere Packaging for Preserving Infant Formula Powder

  • Jo, Min Gyeong;An, Duck Soon;Lee, Dong Sun
    • KOREAN JOURNAL OF PACKAGING SCIENCE & TECHNOLOGY
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    • v.26 no.1
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    • pp.19-23
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    • 2020
  • Al-laminated packaging film incorporating ascorbic acid or tocopherol at inner food contact layer was tested in the potential to improve antioxidative preservation of powdered infant formula under CO2-enriched atmosphere. Product of 200 g was packaged with the packaging film containing 0.3% antioxidant in sealant layer of low density polyethylene and stored at 30℃ for 286 days with periodic measurement of package atmosphere and product's quality attributes. The CO2-flushed package resulted in shrinkage of tight contact between the product and the film not allowing gas sampling of package atmosphere after 140 days. Package of tocopherol-incorporated film allowed some ingress of oxygen after 112 days presumably due to its weakening of heat-seal area. The increased oxygen concentration in the tocopherol-added film package led to the concomitant increase of peroxide value, an index of lipid oxidation. On the other hand, packaging of ascorbic acid-added film pouch could suppress lipid oxidation marginally in consistent manner compared to control package without any antioxidant.

Biaxial Integrated Optical Film for VA Mode LCD's Made from In-situ Photopolymerised Reactive Mesogens

  • Kim, Kyeong-Hyeon;Lyu, Jae-Jin;Chung, Dong-Hoon;Verrall, M;Slaney, K;Perrett, T;Parri, O;Lee, Seung-Eun;Lee, Hee-Kyu
    • Journal of Information Display
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    • v.5 no.2
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    • pp.23-26
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    • 2004
  • For high end, large area displays, all current LC modes require some degree of optical compensation to improve the front of screen viewing experience. Currently most optical films are laminated to the outside of the LCD cell, between the glass and polariser. In this paper we wish to show how it is possible to integrate the compensating optical film within a VA mode LCD cell. The paper will describe the process of making the biaxial film through the process of in-situ photopolymerisation of an aligned film of reactive mesogens in the cholesteric phase using polarised UV light. The film can be made on the colour filter array side of the LCD panel. In addition the process of fabricating a VA mode LCD containing this film will be described and the performance of this module will be presented.

A Study on the Effect of Primer Processing Method on the Mechanical Properties of Impact Relief Air Cushion Materials Prepared through Thermal Film Laminating (프라이머 가공 방법이 열융착 필름 라미네이팅으로 제조한 고충격 대응 에어쿠션 소재의 물성에 미치는 영향 연구)

  • Kim, Ji Yeon;Kim, Hun Min;Min, Mun Hong
    • Textile Coloration and Finishing
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    • v.34 no.3
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    • pp.173-184
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    • 2022
  • In this study, the TPU film was laminated on an aramid fabric or circular knits in order to implement an air cushion material that can respond to high impact forces in case of a fall and is easy to expand. To increase the bonding strength between the fabric layer and the film layer, a primer layer was formed in two ways: one for thermally bonding and laminating PET film and two for coating and aging hot melt type PUR adhesive. The tensile strength of the aramid air cushion was 2.5 times higher than that of the circular knits, but the tensile elongation of the aramid air cushion was very low compared to that of the circular knits. The tear strength of the aramid air cushion was about twice or more superior to that of the circular knits, the primer treatment method was good at A, and the peel strength was excellent at method A. The aramid air cushion was the lightest in weight. Summarizing the above results, it was best to combine the air cushion material with aramid woven fabric and primer treatment method A to cope with the high impact force applied when falling.

Study on the High-Strength Air-Cushion Fabrics for Impact-Relief Application Prepared through Primer Coating and Thermal Film Laminating (프라이머 코팅과 열융착 필름 라미네이팅을 통해 제조한 충격 완화용 고강력 에어쿠션 직물에 관한 연구)

  • Kim, Ji Yeon;Kim, Hun Min;Min, Mun Hong
    • Textile Coloration and Finishing
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    • v.33 no.4
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    • pp.269-279
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    • 2021
  • In this study, the laminating of TPU film after coating of primer adhesive on the fabrics was applied in order to secure the strength to withstand a fall from a higher altitude by increasing the adhesion between the fabric and the film layer. It seems that the fineness of the yarn and the weave construction have a greater effect than the type of the laminating films. The order of superiority of the laminated fabrics by film type and thickness was the same for 1000 denier and 210 denier fabrics, and the tendency was consistent with the order of superiority in the film properties and peel strength tests. The tear strength of laminating fabrics increased three to four times for 1000 denier fabrics compared to the fabric alone, but it decreased by 2 times for the 210 denier fabrics. Summarizing the above results, it is most appropriate to combine 1000d fabric with three types of laminating films(100~200㎛ thickness) of A(0.2T) or B(0.15T) or D(0.1T) considering the air pressure resistance, the impact resistance during the fall, and the durability against damage during use.

Paperboard Box Laminated with Functional MA Film for Freshness Extension of Squash(Cucurbita moschata) (기능성 필름이 부착된 골판지상자에 포장한 애호박의 신선도에 미치는 효과)

  • 박형우;김상희
    • Food Science and Preservation
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    • v.6 no.4
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    • pp.406-410
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    • 1999
  • Squash(Cucurbita moschata) during 7 days of storage at 2$0^{\circ}C$ were packed with functional MA film laminated in corrugated paperboard box(FC), LDPE pouches and control, and weight loss, firmness, chlorophill contents, vitamin C and marketability was erluated. Weight loss of control was 5.8% after 7 days, and 30LD, 50LD was 0.4%, and FC was 1.2%. Firmness of FC, 30LD and 50LD was higher than that of control. Chlorophill content of squash between control and FC box was 46.43 and 53.66 $\mu\textrm{g}$/ml, that of FC box was 15.6% higher than control. Total ascorbic acid cpntent(TAA) of squash packed with control and FC box were 28.11 and 35.65mg%, TAA of squash packed with FC box was 26.8% higher than that of control. Marketability of squash packed with FC box was better than that of control.

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Low-resistance Transparent Plane Heating System using CVD Graphene (CVD 그래핀을 이용한 저저항 투명면상발열 시스템)

  • Yoo, Byongwook;Han, Sangsoo
    • The Journal of Korea Institute of Information, Electronics, and Communication Technology
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    • v.12 no.3
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    • pp.218-223
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    • 2019
  • To prevent the low heating effect of heating system caused by the high sheet resistance of CVD graphene, multi-layered graphene was laminated to implement a Transparent plane heating system with good optical properties of low-resistance. Low-resistance plane heating system implemented by $300{\times}400{\times}5mm$ heating plane laminated multi-layered CVD graphene film and PWM control system to drive efficient power. A plane resistance value of $85.5{\Omega}/sq$ was measured on average for 4-layer CVD graphene film used as a heating plane. Thus, the transfer by thermal film as the method of implementing low-resistance CVD graphene is reasonable. The experimental results of heat test show that an average heat-rise rate in low-resistance, transperent plane heating system using CVD graphene is $10^{\circ}C/min$ and has an optical transmittance rate of 86.44%. Therefore, the proposed heating system is applicable to large window glass and vehicle heating window-shild-glass.

Direct Growth of Graphene on Insulating Substrate by Laminated (Au/Ni) Catalyst Layer

  • Ko, Yong Hun;Kim, Yooseok;Jung, Daesung;Park, Seung Ho;Kim, Ji Sun;Shim, Jini;Yun, Hyeju;Song, Wooseok;Park, Chong-Yun
    • Applied Science and Convergence Technology
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    • v.24 no.4
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    • pp.117-124
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    • 2015
  • A direct growth method of graphene on insulating substrate without catalyst etching and transfer process was developed using Au/Ni/a-C catalyst system. During the growth process, behavior of the Au/Ni catalyst was investigated using EDX, XPS, SEM, and Raman spectroscopy. The Au/Ni catalyst layer was evaporated during growth process of graphene. The graphene film was composed mono-layer flakes. The transmittance of the graphene film was ~80.6%.