• Title/Summary/Keyword: knit industry

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Study on Process Conditions for Automatic Debarking and Xylem Separator for Paper Mulberry (닥나무 자동 흑피 및 목질부 제거 장치의 공정 조건 연구)

  • Choi, Si-Hyuk;Kwon, Oh-Hun;Kim, Hyun-Chel
    • Journal of Korea Technical Association of The Pulp and Paper Industry
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    • v.45 no.3
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    • pp.36-44
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    • 2013
  • This study is focused on the debarking and xylem separation yield of Paper Mulberry. We investigated the most efficient manual on the automatic debarking and xylem separator machine. The bast tissues of Paper Mulberry were separated in three layers including black outer layer, green inner layer, and white inner layer. A target is to save the white inner layer of these three layers as much as possible. The experimental machine most characterize xylem separation and debarking by frictional force between the bulges and Paper Mulberry by the drum rotation. It is possible automatically to operate the machine by controlling the temperature sensor and the time. Debarking process can be know that removed black outer layer has beem accumulate and measured the weight. The content of the extract, holocellulose, lignin and ashes of the white inner layer was analyzed. It is result that conditions of optimum process of the experimental machine is 45 RPM, temperature at $60^{\circ}C$(60 min.) and $80^{\circ}C$(60 min.), mixing bulge of 10 mm(120ea) and 30 mm(120ea) and capacity of Paper Mulberry 10 kg.

Studies on Physical Properties and Printability of machine-made Hanji Made by Different contents of Paper Mulberry (닥섬유 혼합 비율에 따른 기계한지의 물리적 특성 및 인쇄성에 관한 연구)

  • Kwon, Oh-Hun;Kim, Hyun-Chel
    • Journal of Korea Technical Association of The Pulp and Paper Industry
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    • v.44 no.2
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    • pp.1-7
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    • 2012
  • Hanji made of mulberry fibers has the lower printability due to their long fiber length, the diffusible property of ink, and low smoothness. This study was carried out to analyze the physical and optical properties of machine-made Hanji controlled by the different contents of paper mulberry 20, 40, 60, 80 and 100%. In this study, the results of comparing machine-made Hanji controlled by the different contents of $Paper$ $mulberry$ with commercial paper and inkjet coated paper are as following: Tearing strength of machine-made Hanji is higher than domestic paper and inkjet coated paper. By increasing paper mulberry contents of machine-made Hanji appeared that tensile strength increased and smoothness gradually decreased. Printability of machine-made Hanji is less than domestic paper and inkjet coated paper. However, there were significant possibility to use for printing paper.

Development of Knit Wear Designs for LOHAS (로하스를 위한 니트웨어 디자인 개발)

  • Jang, Ae-Ran
    • Journal of the Korean Society of Costume
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    • v.58 no.3
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    • pp.79-92
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    • 2008
  • The purpose of this study is to develop knitwear design expressed not also Green but also LOHAS using natural yarns(wool and cotton) dyed with various natural sources(sappanwood, indigo plant, turmeric, cochineal, coffee, gallnut, and persimmon juice). This researcher tried to suggest solution scheme through the development of knitwear designs to break from the cottage industry and the limitation of design in Jeju and to preserve of traditional dye with persimmon juice simultaneously. Knitting is the formation of a fabric by the interlooping of one or more sets of yarns with hand knitting or industrial knitting. In hand-knitting, the two fundamental stitches are described as knit depending on the direction of the loop formation, front to back or back to front. In machine-knitting, the direction of loop formation is fixed, unless the stitch is mechanically transferred from front to back needle bed or vice versa. Industrial knitting technology can be divided into two main areas - weft knitting and warp knitting. Each has a different principle of construction. The majority of knitted fabrics for clothing are weft-knitted, and so this study is used weft-knitting and hand knitting technology. To achieve this purpose, researcher tried to present a lot of knitwear designs using yarns dyed with various natural sources focusing on Modern & Sophisticated Image and Elegance & Romantic Image to satisfy adult and missy consumer needs.

Knitwear Design Applying Traditional Danchong Motifs (단청문양을 응용한 니트웨어 디자인)

  • Kim, Hye-Kyung;Lee, Ji-Young;Lee, Hye-Sung
    • Fashion & Textile Research Journal
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    • v.6 no.4
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    • pp.415-420
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    • 2004
  • The market demand for knitwear has been increased both domestically and in export. Despite of the high and consistent demand, knitwear design has been rather simple and tends to show mainly foreign influences. In order to compete efficiently in the world market and to provide more variety, knitwear design originated from our cultural background needs to be developed. Therefore, the purpose of this study is to develop various knitwear design adopting the Korean traditional 'Danchung' motifs and the main colors used in the motifs. Three knitwear works were designed and constructed, which included a round pullover, a half-sleeve V-neck one-piece dress, and an evening dress. The mainly used motifs consisted of natural motifs such as lotus, cloud, and motifs symbolizing good luck such as 壽 and 囍. The Original 'Dan-chung' motifs were stylized into different forms and colors, and this design work was done using CAD system including the 'Adobe Illustrator 9.0' and the '4D box Hi-Knit Program'. Based on the designed images created by the CAD system, an actual design works were knitted using different weft knit methods including a hand knitting machine and weft knit machine of the knitwear manufacturers. This study provided the possibility of knitwear design originated from the Korean traditional culture.

The Physical Property of PET Coolness Knitted Fabric for High Emotional Garment (고감성 의류용 PET 냉감 니트 소재의 물성)

  • Kim, Hyun Ah;Woo, Ji Yoon;Kim, Seung Jin
    • Textile Coloration and Finishing
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    • v.26 no.2
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    • pp.114-123
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    • 2014
  • This research investigated the physical properties of PET coolness filaments and their knitted fabrics including dyeing characteristics of these knitted fabrics according to the different dyeing time and temperature. The coolness filament(S) with non-circular cross-section and hydrophilic property was spun and another commercialized coolness(A) and regular(R) PET filaments were prepared for comparing coolness and another physical properties. Qmax of coolness knitted fabric made with S filament was higher than that of R-PET filament, and the maximum value of Qmax of S knitted fabric was shown at the dyeing conditions of temperature, $110^{\circ}C$ with 30 min. or 40min. It was shown that hand of S knitted fabric was a little harsh comparing to A and regular knit specimens, but shape retention and wearing performance of garment made with S knit specimen were estimated as good owing to high bending and shear rigidity. K/S of S knitted fabric was higher than those of regular PET and A knit specimens. Dyeing fastness of coolness knitted fabric showed between 4th and 5th grade.

Antibiosis against Super Bacteria from Natural Dyeing with Elm Bark Extract (느릅나무껍질 추출액을 이용한 천연염색의 슈퍼박테리아에 대한 항균성)

  • Choi, Na Young;Park, Hee-Su
    • Fashion & Textile Research Journal
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    • v.17 no.5
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    • pp.838-843
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    • 2015
  • In this study, a cotton knit was dyed with elm bark extract; subsequently, the dyed fabric was measured according to the types of mordants and the preprocessing cationizers used. Additionally, antibiosis against super bacteria was examined. The results follow. First, the color of the dyed cotton knit appeared reddish and yellowish for fabrics treated with non-mordants and mordants. When preprocessing with a cationizer was conducted, the dyeing properties were the best. Second. even when mordants were not used for dyeing, color fastness after washing, sweating, and rubbing was generally good Grade 4 and 5. Color fastness after exposure to sunlight was the best Grade 4 for fabric prepared with ferrous sulfate as the mordant. Third. as for antimicrobial properties, or resistance to super bacteria, the growth of bacteria was suppressed in a meaningful way for fabrics treated with non-mordants and mordants, compared to the control group fabric. The dyeing methods with the most powerful antimicrobial effects were dyeing after preprocessing with a cationizer and preparing fabric with copper sulfate as the mordant. The results stated above show that in case of dyeing with elm bark extract, preprocessing of the cotton knit with a cationizer and dying with copper mordant displayed high levels of antimicrobial properties that were useful for resisting super bacteria. Of these the dyeing properties were the best when preprocessing with a cationizer.

A Comparative Study on the Conductivity and Physical Properties of Conductive Materials for Heart Rate Monitoring (심박 모니터링을 위한 전도성 소재의 전도성 및 물성 비교 연구)

  • Kim, Jimin;Kim, Jongjun
    • Journal of Fashion Business
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    • v.22 no.4
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    • pp.118-129
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    • 2018
  • The purpose of this study is to develop ECG electrode materials for the heart rate monitoring smart band, a smart device used for ECG and heart rate measurement. The purpose of the evaluation is to assess properties and conductivity of electrodes of the existing heart rate monitoring smart band, and to determine suitability through a representative conductive sample. Because level of thickness does not differ significantly from value of conductive specimen from thickness of the smart band, it can be used as a conductive electrode. Surface conductivity of conductive samples and smart bands, is expected to be available as electrodes except for conductive film. Also, since the knit have conductivity only in the metal processing layer, it is necessary to use electrodes on the part of the metal processing layer that is conductive when applying the knit. Tensile strength and electrical conductivity of the tensile were generally revealed to have a tendency. Thickness of the specimen that can be used as an electrode for the smart band is suitable for all samples, electrical resistance, conductive woven, conductive knit, and conductive cord. In the case of conductive cord, however, the electrode attached to the human body will not conform to the flat shape of the electrode attached to the human body. Therefore, the conductive woven and the conductive knit will be available as an electrode.

A Study on Current State in Stitches and Seams Usage for Building Smart Sewing Systems: Focused on Sewing Specification of Cut and Sewn Knit (스마트 봉제 시스템 구축을 위한 스티치 및 솔기 사용 현황에 관한 고찰: 컷 앤 쏘운 니트 의류 봉제사양서를 중심으로)

  • Lee, Suyeon;Ha, Hee Jung
    • Human Ecology Research
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    • v.58 no.3
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    • pp.357-374
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    • 2020
  • This study suggests the use of standardized sewing terms for the construction of smart sewing systems. This study analyzed the use of stitches (ISO 4915) and seams (ISO 4916) for cut and sewn knit garment which are the basic elements of sewing on an ISO basis. The results of the analysis of sewing specifications of cut and sewn knit garments are as follows. First, the use of stitches and seams were analyzed. As a result, both stitches and seams were used as non-standard terms. Second, among 3,263 stitches, ISO 4915 No. 406 followed by 401, 504, 605 were the most frequently used; however, ISO 4915 No. 514 was anticipated the most because the ISO 4915 No. 514 used for joining was not recorded in the sewing specification. Finally, the use of stitch for each seam was analyzed. The most common stitch used for ISO 4916 No. 6.02.07 was ISO 4915 No. 406. In addition, when it was sewing ISO 4916 No. 4.04.01, ISO 4915 No. 504 was used in step 1, and ISO 4915 No. 406, 602, and 605 were used in step 2. It is important to use the international standard sewing terms for the production site based on the results. In addition, the construction of smart sewing systems and the work of international standardization through industry-university cooperation are important for securing global competitiveness. Therefore, the use of international standard terminology and practical training should be conducted with a focus on stitching and seams with high frequency of use.

Comparative Analysis of Consumer Attitudes and Ethical Purchasing Behavior on RUR Knitted Fashion Products According to Environmental Consciousnessof Female Consumers in Their 30s and 40s (30~40대 여성 소비자의 환경의식에 따른 RUR 니트 패션 제품에 대한 소비자 태도, 윤리적 구매 행동 비교 분석)

  • Sun Jung Yang;Chil Soon Kim
    • Fashion & Textile Research Journal
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    • v.25 no.5
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    • pp.568-577
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    • 2023
  • This study examined how middle-aged female consumers' environmental consciousness influences their attitudes and ethical purchasing behavior toward RUR (recycling, upcycling, and reuse) knit products. The research employs a survey method, targeting 30-40 year old women residing in Seoul and Gyeonggi-do Province. On-line and off-line data collection were conducted. The following conclusions emerged through statistical analyses, including factor analysis, cluster analysis, t-test, and regression analysis. Firstly, respondents' environmental consciousness variables were classified into two factors, delineating high and low environmental consciousness clusters, demonstrating significant differences between them. Secondly, the high environmental consciousness cluster exhibited more positive consumer attitudes and ethical purchasing behavior towards RUR knit products. Moreover, it was established that environmental pollution consciousness and eco-friendly product purchase consciousness influenced environmental consciousness on consumer attitudes and ethical purchasing behavior. Lastly, the study confirmed that consumer attitudes mediated environmental consciousness and ethical purchasing behavior. In conclusion, this research establishes a meaningful link between environmental consciousness, consumer attitudes, and ethical purchasing behavior in 30-40 year old women. Environmentally conscious groups positively influence attitudes toward RUR knitted fashion and promote ethical purchasing behavior. Consequently, it is recommended that knit fashion companies prioritize environmental consciousness and eco-friendly products in their marketing strategies. Furthermore, diversifying the application of RUR knit products, coupled with eco-friendly production techniques, can amplify their appeal and utility, ensuring a positive impact on consumer behavior.