• Title/Summary/Keyword: loom

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A study on Optimum Design of Beating Cam Meachanism for Shuttleless Loom (무북직기용 Beating Cam 기구의 최적설계에 관한 연구)

  • Kim, Jong-Su;Sin, Jung-Ho
    • 연구논문집
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    • s.22
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    • pp.75-83
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    • 1992
  • The beating motion of a high speed shuttleless loom is driven by cams. Two cams become one system and their shaft laid across each other. Moreover, the shape of the cams is very complex and requires high precision for successful weft insertion and good interlacing with warp yarn. The iterative contact method is developed for use in design and analysis of the driving mechanism of a disk type cam with oscillating roller follower. The optimum design is performed by utilizing a CAD program, DISKCAM. The 8th order polynomial is selected to interpolate the desired shape trajectory of the cam, the optimal shape of the cams is defined based on the demension of the follower. The kinematic motion of the beating cam mechanism is investigated. The phase angle is determined to achive harmonious cam motions

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Effects of Weaving Machine Characteristics on the Physical Properties of PET Fabrics (III) (직기 특성이 PET직물 물성에 미치는 영향(III))

  • Kim Seung Jin;Jin Young Dae;Kang Ji man;Jung Gee Jin
    • Textile Coloration and Finishing
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    • v.16 no.5
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    • pp.48-53
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    • 2004
  • This study surveys the tension differences between Textec and Vamatex looms and analyses fabric mechanical properties using KES-FB system according to warp and weft tension differences. Fabric is designed as 5 harness satin weave using 150d/48f warp and 200d/384f weft polyester filaments, and is woven by $Omega^{\circledR$-Panter rapier loom by Textec Co.Ltd and P1001es rapier loom by Vamatex Co.Ltd., respectively. These grey fabrics are processed on the same dyeing and finishing processes. Weavability is also analysed by measuring warp tension variation according to the warp position. The relationship between shed amount and the warp tension on one fixed heald frame is surveyed, and the relationship between end breaks and warp and weft tensions is also discussed.

The characteristics of Korean textile production of the Honam district from the 1930s to the 1980s - Focused on cotton and silk textiles in Gurye, Jella Province - (1930년대~1980년대 호남 지방의 직물 생산 방식의 특징 - 전라남도 구례군의 면직물과 견직물을 중심으로 -)

  • Choi, Seung Yeun
    • The Research Journal of the Costume Culture
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    • v.21 no.6
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    • pp.844-859
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    • 2013
  • This study investigated the characteristics and changes of cotton and silk textile production in Honam district, especially in Gurye, Jella Province from the 1930s to the 1980s. To do this, research method in this study was both literature and fieldwork research and results were as follows. First, in terms of cotton fiber cultivation of Gurye, Chinese Cotton(在來綿) has been substituted for America Cotton(陸地綿) and additionally, Yellow Cotton (黃綿) has been cultivated in the 1930s. Also, in terms of silk fiber cultivation of Gurye, Joseon Silkworm has been substituted for Japanese Silkworm by inflowing the Japanese mulberry tree. Second, in terms of spinning method, cotton spinning has been conducted at every house by an individual tool from the 1930s to the 1950s and has been gradually changed to mechanization by market shop equipped with mechanized cotton gin and cotton whipping tool. However, there have been no changes in silk spinning method from the 1930s to the 1980s. Third, loom type has been changed from the traditional Korean back-strap loom to the treadle loom between the 1930s and the 1940s. Fourth, dyeing was conducted by chemical dyestuff after weaving. The circulation of textile was done through the joint market by Japan in the 1930s~1950s and has changed to the market sales by producers since the 1950s. Fifth, since the 1970s, the outputs of cotton and silk textile of Gurye have been reduced. This was connected with the westernization and the inflow of the synthetic fiber and cloth in cotton and was related to the changes of the nation policy and silk fiber inflow from the china to the Korean farm villages.

Effects of the Weaving Tension Characteristics on the Surface Properties of PET Fabrics for the Sensitive Garment (I) (직기장력특성이 감성 의류용 PET 직물의 표면특성에 미치는 영향 (I))

  • Kim Seung-Jin;Kang Ji-Man
    • Science of Emotion and Sensibility
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    • v.7 no.4
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    • pp.25-33
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    • 2004
  • This study surveys the fabric surface properties such as mean value of the friction coefficient(MIU), mean deviation of the friction coefficient(MMD) and mean deviation of surface roughness(SMD) due to warp and weft tension differences using KES-FB system. For this purpose, fabric is designed as 5 harness Satin weave using 75d/36f warp and 100d/192f weft polyester filaments, and is woven by OmegaR rapier loom by Textec Co.Ltd and Picanol-GTXR rapier loom by Picanol Co.Ltd respectively. These grey fabrics are processed on the same dyeing and finishing processes. The fabric surface properties according to the weaving looms are analysed with warp and weft weaving tensions. And also surveyed the difference of fabric surface properties according to the fabric positions such as center and each edge of fabrics for the sensitive garment.

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A Study on Weave Design of Supplementary Warp using Computer-Aided Weaving System (CAW(Computer-Aided Weaving) 시스템을 활용한 Supplementary Warp의 직조디자인 연구)

  • Song, Ha-Young
    • Journal of the Korea Fashion and Costume Design Association
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    • v.12 no.3
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    • pp.43-55
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    • 2010
  • The major advantages to use CAD System are that it reduce time and effort to manufacture products, and also can demonstrate the condition of the final product prior to the actual manufacturing process of the selected design using the simulation programs in CAD system. Specially in weave design, for use as Computer-Aided Weaving system, the complicated Dobby weave can figured out easily through calculating the complex weave plans of multi shafts. As to one of dobby weave structures, Supplementary warp is the warp threads which are in addition to the regular warps of the woven fabrics, and used for decorating the band or expressing some patterns. The purpose of this study is to research the weave design of Supplementary warp using Computer-Aided Weaving system, which is dobby weave design program of Weave Point. For performing this design study, it was researched the classified woven fabrics depending upon weaving processing, Computer-Aided Weaving system, and the characteristic of Supplementary warp fabrics. On the basis of the theoretical research, Supplementary warp was worked for the 24-shafts AVL computer dobby loom that applied to the various patterned images. The design work was done by Weave Point program of dobby weave, and simulated to fabrics before woven into the computer dobby loom. To see the visual images of fashion items, these simulated bobby fabrics were processed by three-dimension modeling through YoungWoo CNI CAD system. All the patterns of the Supplementary warp in this study could be applied for decorating the fashion clothing and accessories.

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The characteristics of cotton production of Damyang-gun & Hwasun-gun, Yeongsan River, in modern times - Focused on the comparison of Gurye-gun, Seomjingang River - (근대시기 영산강 유역(담양군과 화순군) 면직물 생산 문화의 특징 - 섬진강 유역의 구례군과의 비교를 중심으로 -)

  • Choi, Seung yeun
    • The Research Journal of the Costume Culture
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    • v.24 no.4
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    • pp.471-482
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    • 2016
  • This study investigated the characteristics of cotton production of Damyang-gun & Hwasun-gun, Yeongsan River compared with that of Gurye-gun, Seomjingang River in modern times. To do this, research method was both literature and fieldwork research, results were as follows. First, as for cotton fiber cultivation in Damyang-gun & Hwasun-gun, Chinese cotton (在來綿) has been cultivated during Japanese Colonial era unlike Gurye-gun. Especially, Yellow cotton (黃綿) has been cultivated in Hwasungun. Second, as for spinning in Damyang-gun, Hwasun-gun and Gurye-gun, some of cotton spinning process have been gradually changed to mechanization by market shop equipped with mechanized cotton gin and cotton whipping tool since Japanese colonial era. Third, the loom types also, like spinning tools, have been changed from the traditional Korean back-strap loom to the treadle loom in Damyang-gun, Hwasungun and Gurye-gun. Chemical dyeing with chemical dyestuff also has been done since Japanese Colonial era. Fourth, since the 1970s, the outputs of cotton production have been reduced in both Damyang-gun & Hwasun-gun. For Damyang-gun, this has been connected with bamboo craft since the Joseon Dynasty period. So, Damyang-gun has more concentrated on bamboo craft than cotton production. For Hwasun-gun, since Japanese Colonial era, sericulture has been very important. So, Hwasun-gun also has more concentrated on sericulture than cotton production. The main reason to discontinue cotton production in Damyang-gun, Hwasun-gun and Gurye-gun was related to the local choice like economic added value.

A Study of the changes of the Dan (緞) Fabrics for Hanbok Since 1945 (해방이후 한복용 단직물의 변천에 관한 연구)

  • 신혜성;홍나영
    • Journal of the Korean Society of Clothing and Textiles
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    • v.27 no.6
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    • pp.715-724
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    • 2003
  • The Korean clothing culture has shown rapid changes along with influences of western cultures, with social changes due to the liberation from Japan, the Korean War, and the economic growth concentrated on export since the westernization of Korea had begun. Also clothing materials, as a phase of such culture, have been changed. Among silk fabrics, "Dan (단: damask of satin texture with Korean traditional patterns are inwoven)", which has been concerned one of the most beautiful and precious fabrics due to its complexity and difficulty of processing. Since the beginning of the Era of Enlightenment(Kae-hwa-gi), Dan fabric materials and weaving methods have changed. It seems that the figured texture using the Jacquard loom began in 1936. when the Jacquard machine began to be imported from Japan into Korea. From that time on, new fabric materials, such as yangdan (양단), and popdan (법단), hobakdan (호박단), silk and rayon mixed Dan(교직양단) began to be produced. Before 1950's there were some restrictions about the Number of wefts, so the production of the one colored dan(단색단) was more common than that of the multi colored dan(다색단). But with the spread of 4$\times$4 shuttle box loom (양사정직기), various kinds of the multi colored dan have been produced after 1960's. Around the end of 1980's, automatic shuttle change loom have been generalized and 7 color dan(칠색단), 9 color gumsadan (구색금사단) have been current in multi colored dan. In terms of materials, synthetic and chemical textiles had been used widely and alter 1980's most fabrics, of which the ground weave is not being woven with satin-weave but being woven with plain or twill-weave, are named Dan in general.

Implementing User Interface of Looms Management with Spatial Aggregate Query Functions (공간적 집계 질의 기능을 가진 직기 관리 사용자 인터페이스의 구현)

  • Jeon, Il-Soo
    • Journal of the Korean Association of Geographic Information Studies
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    • v.6 no.1
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    • pp.37-47
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    • 2003
  • In this paper, a component was designed for a loom in a window, and then a user interface was implemented to be able to connect database and to process various queries. The implemented system has aggregate query processing functions for the loom components existing in the selected area by the mouse and it also supports high level query processing functions represented with chart and pivot table; we can use it as a decision support system. The proposed system can detect temporal or persistent problems in the looms. Therefore, it can be used to raise the productivity and to reduce the cost in textile companies by coping with the situation properly.

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