• Title, Summary, Keyword: Silk screen printing

Search Result 19, Processing Time 0.041 seconds

Preparation and Screen Printing of Natural Dye Powders (천연염료 분말 제조 및 날염)

  • Nam, Sung-Woo;Kim, Ki-Tea
    • Textile Coloration and Finishing
    • /
    • v.22 no.4
    • /
    • pp.314-324
    • /
    • 2010
  • The purpose of this study is to obtain the dyed-fabrics of the elaborate patterns using the natural dye powders extracted from Galla Rhois, Sophorae Flos Immaturus, Clove, Sappan Wood, Madder, Log Wood and Japanese Green Alder. Specific informations on the separation and powder-making of each colorant were disclosed. Appropriate printing paste preparation and printing conditions including the viscosity and mordant concentration in the printing paste were investigated. The dyeability and colorfastness of the screen-printed silk fabrics with the colorant powders were discussed in terms of practical applicability. The deodorization and antimicrobial activities of the silk fabrics screen-printed with natural dyes were also assessed.

Development of Build up Multilayer Board Rapid Manufacturing Process Using Screen Printing Technology (스크린인쇄 법을 이용한 Build-up다층인쇄회로기판의 쾌속제조공정 기술개발)

  • 조병희;정해도;정해원
    • Journal of the Microelectronics and Packaging Society
    • /
    • v.6 no.4
    • /
    • pp.15-22
    • /
    • 1999
  • Generally, many equipments and a long lead time ale required to manufacture the build-up multilayer board through various processes such as etching, plating, drilling etc. Wet process is suitable for mass production, however it is not adequate for manufacturing prototype in developing stage. In this study, a silk screen printing technology is introduced to make a prototype build-up multilayer board. As for the material photo/thermal curable resin and conductive paste are used for forming dielectric and conductor. And conductive paste fills vias for interconnecting each layer, and also is used for circuit patterning by silk screen technology. Finally, the basic concept and the possibility of build-up multilayer board prototype is proposed and verified as a powerful approach, compared with the conventional processes.

  • PDF

Humidity Sensing Properties of 90[wt%] SnO2-10[wt%] TiO2 Ceramics (90[wt%] SnO2-10[wt%] TiO2 세라믹스의 습도감지특성)

  • You, Do-Hyun
    • The Transactions of The Korean Institute of Electrical Engineers
    • /
    • v.63 no.9
    • /
    • pp.1227-1232
    • /
    • 2014
  • The purpose of this paper is to establish the optimum fabricating condition of specimens using silk screen printing, and to develop humidity sensor which has good humidity sensing properties. The specimens are fabricated under the condition of 90[wt%] $SnO_2$-10[wt%] $TiO_2$, and their microstructure, crystalline structure, humidity sensing properties are examined. From the microstructure analyses, porosity is best at 700[$^{\circ}C$]. From the crystalline structure analyses, intensity of peak becomes strong according to increasing heat treatment temperature. From the humidity sensing properties analyses, an overall results of capacitance changes, linearity and hysteresis for the specimens is best at 600[$^{\circ}C$] and 700[$^{\circ}C$]. Capacitance of specimens increases according to decreasing measurement frequency, and to increasing relative humidity.

Humidity Sensitive Characteristics of CaTiO3 Thin Films (CaTiO3 박막의 감습특성)

  • Yook, Jae-Ho
    • The Transactions of the Korean Institute of Electrical Engineers P
    • /
    • v.62 no.2
    • /
    • pp.95-97
    • /
    • 2013
  • $CaTiO_3$ thin films using silk screen printing technology were fabricated and their humidity sensitive characteristics have been investigated. The specimens were sintered at $1000^{\circ}C$, $1050^{\circ}C$, $1100^{\circ}C$ for 1 hour and the best humidity sensitivity was shown in the specimens sintered at $1000^{\circ}C$. The humidity sensitivity decreased with increasing measuring frequencies and was stable at different abient temperatures. Hysteresis of impedance variation with increasing and decreasing relative humidity were negligible.

Dyeing Properties Wood Dyes by Screen Printing (날염을 이용한 소목의 염색성에 관한 연구)

  • 김은경;장지혜
    • Journal of the Korean Home Economics Association
    • /
    • v.38 no.9
    • /
    • pp.119-130
    • /
    • 2000
  • The purpose of this study was to confirm the possibility of screen printing with Natural dyes. The coloring matter such as sappan wood was used in order to obtain the colorant powder through the processes of extraction, low pressure concentration and the spray dry. After the screen printing on silk and cotton fabrics with colorant, K/S value changes of color and color fastness were measured. The main resets were as follows : 1. The viscosity of printing thickeners of sappan wood powder was about 15,200 cps, and the highest K/S value of the fabrics printed with sappan wood was obtained at 90$\pm$2$\^{C}$ of steaming temperature and 80 minutes of steaming time. 2. For the fabrics printed with sampan wood, adding of urea was not effective, since the more the concentration of urea increased, the more K/S values decreased. 3. For the natural dyes printing, the more the concentration of colorants increased, the more K/S values increased. In general, the K/S values of the printed fabrics were higher when treated with mordants rather than without mordants. Specifically, the λmax sappan wood was 520∼570 nm, and the K/S value was highest when treated with Cu mordant and lowest when treated with Sn. 4. Generally, the color fastness was relatively fair.

  • PDF

Effects of the Rheological Properties of UV Cured Acrylic Pressure Sensitive Adhesive with Nano-particles on the Silk Screen Printing and Adhesion (실크 스크린 인쇄 및 점착력에 나노 입자가 포함된 UV 경화형 아크릴계 감압 점착제의 유변학적 특성)

  • Cho, Min-Jeong;Kang, Ho-Jong;Kim, Dong-Bok
    • Journal of Adhesion and Interface
    • /
    • v.18 no.1
    • /
    • pp.25-32
    • /
    • 2017
  • For application to display module junction process, the silk screen printing based on UV curable acrylic pressure sensitive adhesive(PSA) with silica nano-particles and the rheological properties were studied to investigate the effect on printability and adhesion. The monomers for PSA were based on 2-ethylhexyl acrylate(2-EHA) and acrylic acid(AA) 93:7, butyl acylate(BA), 2-hydroxyethyl acrylate(2-HEA) and tetrahydrofurfuryl acrylate(THFA) were added. Additionally, hydrophobic and hydrophilic nano-particles AEROSIL R974 and AEROSIL 200 were added, respectively. When the ratio of nano-particle was used above 4 or 7 phr, G' and ${\eta}^*$ were increased significantly. When the ratio of AEROSIL 200 was used above 7 phr, the penetration property was decreased during the silk screen printing. We found that the adhesion was decreased with increasing the nano-particle content, and it was decreased in the case of the hydrophilic nano-particle AEROSIL 200.

A Study on Eco-Friendly Jaquard Fabric Design Utilizing Natural Dyed Silk Screen Printing (천연염료 실크스크린 기법의 텍스타일 디자인 제작에 관한 연구)

  • Lee, Ae Ja
    • Fashion & Textile Research Journal
    • /
    • v.18 no.4
    • /
    • pp.412-423
    • /
    • 2016
  • This paper explores the possibility, and suggests an experimental procedure, of industrial application of traditional textile design techniques, such as hand silkprinting and natural dyeing. Theoretical and traditional background of this study is William Morris and his followers' Arts and Crafts Movement from the late 19th century to the early 20th century, which laid the philosophical as well as technical foundations of modern textile design tradition. Based on the basic understanding of the design philosophy, and starting from the design techniques of Morris and his successors, I made some experimental and systematic color plans reflecting and exploiting the physical traits and structure of jacquard woven silk material fabrics. And I applied hand silkscreen printing techniques on the jacquard silk fabrics of my own making, while testing various color combinations of natural dyes. After finishing final processing of design samples, I could get textile design products which met the criteria of my original expectation, i.e., eco-friendly and aesthetic design samples that can also be produced in automatized mass production system of contemporary textile industry. The conclusion of this experimental study is that I can expect the natural dyeing techniques, jacquard silk fabrics design techniques, silkprinting techniques, and the basic processes used in this study to be safely applied for contemporary commercial textile industry utilizing automatized silkscreen printing system and digital printing devices.

Microwave Properties of Ag Conducting Paste with Various Preparation Conditions (Ag가 함유된 전도성 도료의 제조 조건에 따른 고주파 특성)

  • Park, Sang-Hoon;Kim, Jeong-Pyo;Seong, Won-Mo
    • Journal of the Korean Institute of Electrical and Electronic Material Engineers
    • /
    • v.18 no.9
    • /
    • pp.827-832
    • /
    • 2005
  • Dual band internal antennas were fabricated with Ag conducting paste of various preparation conditions and different print thickness by silk screen print. We have investigated microwave properties were compared Ag conducting paste antenna with copperplate antenna at 800 MHz and 1,800 MHz. Gain of Ag conducting paste antenna was improved when preparation conditions were the single size Ag particle, using dry type resin and high Ag containing percent. However, it was lower than that of copperplate antenna within $0.1\~2.0dBi$ at 800MHz. In addition, it was improved at 800MHz when thickness of Ag conducting paste was printed more than skin depth but it was held after critical print thickness. On the other hand, it was reached level of copperplate antenna at 1,800MHz.

Development of Traditional Cultural Products Using Persimmon Dyeing (감물염색을 활용한 전통 문화상품의 개발)

  • Lee, Eun-Jin;Kim, Sun-Kyung;Cho, Hyo-Sook
    • The Research Journal of the Costume Culture
    • /
    • v.15 no.6
    • /
    • pp.1053-1062
    • /
    • 2007
  • This study purposed to restructure representative traditional patterns formatively, manufacture actual cultural products with traditional dyeing technique using persimmon, and commercialize the results of the research. Traditionally in Korea, the dying of natural fiber such as cotton, flax and silk with persimmon was called Galmul dyeing, and clothes made through Galmul dyeing were called Galot. Galot was very useful because it is strong, does not pick up dirt easily, dries easily, and is cool in summer. In addition, cloth dyed with persimmon becomes stiff, so it does not need to be starched or ironed after washing. Moreover, it does not transmit heat under direct rays and is highly air-permeable, so it is cool and useful for standing the heat. In this study, we used traditional persimmon dyeing technique, printing traditional patterns fit for contemporary people's aesthetic sense not through dip-dying but through printing. When persimmon dyeing is used in expressing patterns, it produces not only visual effect but also embossing effect due to the characteristic of persimmon that makes printed patterns stiff, so we can obtain unique texture distinguished from other printing methods. We chose seven motive patterns, which were lotus pattern symbolizing eternal life, peony pattern symbolizing wealth and rank and prosperity, character Su(壽) pattern widely used as a symbol of health, bird and cloud pattern in the Goryeo Dynasty, Sahapyeoeuisohwa(四合如意小花) pattern printed on brocade in the Goryeo Dynasty, lattice pattern, cloth pattern on wall paintings from the Period of the Three Kingdoms. From each pattern chosen as a motive was extracted unit patterns and the original pattern was restored using Adobe Illustrator. Restored patterns were restructured to be applied to cultural products fit for contemporary formative sense. Fabrics used in dyeing were cotton, linen, ramie, silk, and polyester. Although the same persimmon dyeing was applied, we produced different feelings of patterns using various fabrics and in some cases gold and silver powder was added for the effect of gloss in addition to the embossing of patterns. Using printed fabrics we manufactured tea pads, place mats, cushions, wrapping cloth for gifts, wallet, lampshades.

  • PDF