• Title/Summary/Keyword: warp knit

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A Study on the Design of Knit be based Knitting Technique -Focused on the Exhibition- (니트의 편직기법에 의한 디자인 연구 -작품제작을 중심으로-)

  • 이선희;이순홍
    • Journal of the Korean Society of Costume
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    • v.53 no.1
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    • pp.99-116
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    • 2003
  • Knit is classified into two such as basic texture and applied one according to knitting principle, and the basic texture of weft knitting consists of single knit. rib knit, purl knit and interlock knit. The basic texture of warp knitting consists of double knit texture, double code knit texture and double vandyke knit texture. Fourteen costumes were produced with eighteen (18) different types and twenty four (24) raw materials, and we were trying to show a wide range of costumes produced with knitting by making two different brands at random and making different designs depending on four seasons. Knitting technique is very important element in that it allows special surface effectiveness and decides the characteristic of knitting materials. Knit designer plays very important roles such as selection of raw thread, deciding knitting technique and type of knitting machine in designing the knit. Therefore, the knit designer requires the ability to utilize the function of knitting machine to the maximum, the effort to acquire the variety of knitting technique, develop the new knitting technique and for the improvement of knitting design.

A Study on the Design of Women's Knitwears - Focusing on Stitch and the Handcraft Ornament Technique - (여성(女性) 니트웨어 디자인에 관(關)한 연구(硏究) - 조직(組織)과 수공예적(手工藝的) 장식기법(裝飾技法)을 중심(中心)으로 -)

  • Kim, Hae-Young;Cho, Kyu-Hwa
    • Journal of Fashion Business
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    • v.5 no.1
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    • pp.131-144
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    • 2001
  • The purpose of this study is to examine the type of stitch and designs of knitwears using handcraft ornament techniques. This paper will also go on to develop and merchandize high value generated by design development. Knit is largely divided into weft knit stitch and warp knit stitch which are respectively woven by weft knitting machine and warp knitting machine. For clothing, circular knit and flat knit are frequently used while plain stitch, rib stitch and purl stitch are perceived as the basic stitches. Denbigh stitch, cord stitch, atlas stitch, which belong to tricot stitch, are the basic of warp knit stitch. There are also numerous fancy fabrics adapting the previously mentioned stitches and these are made into solid pattern and yarn dyed pattern. The handcraft ornament techniques in knitwears design are embroidery, beads, sequin, stone, printing, applique and fringe, etc. By applying these techniques thus creative expression, which cannot be expressed in other fashion items, is feasible. The women's knitwears are tries by mixed and various techniques, develope to high value knitwears, escaping from simple and practical items.

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Effect of Dilation on the Mechanical Characterization of Vascular Prostheses

  • Ulcay Y.;Pourdeyhimi B.
    • Fibers and Polymers
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    • v.6 no.1
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    • pp.49-54
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    • 2005
  • The purpose of this study has been to investigate the effect of dilation on the some mechanical properties of several types of warp-knitted vascular grafts. The structures of warp knit vascular grafts used in the experiments were reverse locknit, locknit, and Tricot. Various mechanical properties of these grafts were determined using devices developed for the purpose. Clinical data obtained were compared with experimental results of warp knit vascular grafts. The most important mechanical properties are found to be creep extension, bursting strengths, and compliance. Preliminary results indicate that vascular grafts are non-compliant and exhibit creep which is predictive of the long term dilation that has been noted in the clinical results. It is found that there is a positive correlation between experimental data and clinical results for at least the grafts tested.

Changes on the Abrasion and Mechanical Properties of Warp Knitted Fabric for Footwear with Softeners and Heat Treatments (유연제 및 열처리에 따른 신발용 경편성물의 마모 및 역학 특성 변화)

  • Jeon, Youn-Hee;Koo, Ja-Gil;Jeong, Won-Young;An, Seung-Kook
    • Fashion & Textile Research Journal
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    • v.12 no.4
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    • pp.494-499
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    • 2010
  • Knitted fabrics are very popular for their numerous advantages such as greater comfort, attractive garment appearance, better fit on the body, etc. In this study, we investigated the mechanical properties and abrasion property of warp knitted fabrics for footwear which treated with several softeners to improve abrasion resistance. The antistatic softener among the various softeners showed high improvement in abrasion resistance. Among the mechanical properties with treating conditions, WT (tensile energy), G (shear stiffness), B (bending rigidity) increased as treating timeincreased. But the other mechanical properties were little changed with treating concentration.

A Study on Tricot Textile Design Process using Tricot CAD Program (CAD 프로그램을 활용한 트리코트 텍스타일 디자인 개발 프로세스 연구)

  • Choi, Kyoungme;Kim, Jongjun
    • Journal of Fashion Business
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    • v.19 no.5
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    • pp.1-16
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    • 2015
  • The appearances and geometry structures of knitted fabrics have important effects on their functions as textile fabrics. Structural design of the woven fabric, prior to the manufacturing processes in the weaving mill, often leads to a similar predictable appearance in the final outcome with the corresponding weave design. The increase of the employment of elastic textile yarns in knitting fabrics for comfort stretch or outdoor sports wear knit products has, however, resulted in difficulties in predicting the final appearance of the knit structure design. Due to the stretchability and exceptional recovery behavior of the elastic yarns such as polyurethane elastomeric yarns, the appearance of the final product often differs from the initial knit design. At textile CAD program for preparing tricot knit designs has been employed in this study to predict the two dimensional appearance of the design. The similarities between the designs and corresponding knit products seem to be acceptable for the two-dimensional textile CAD program in this study. However, when elastomeric yarns are partially employed in the polyester filament tricot product, a considerable amount of departure from the design is apparent due to the constriction and/or deformation of property differences in the elastomeric yarns and polyester filament yarns. Therefore, another purpose of this study is to measure the departure of the final tricot product from the initial tricot design, especially in the case employing elastomeric yarns in the knit structure together with regular polyester filament yarns. For measuring the three-dimensional departure, a 3D scanning system has been used for the mesh reconstruction of the fabric specimen. Hopefully, the result from this study will be used as a guide to modify and improve the current textile CAD program proposed for the two-dimensional simulation of the tricot.

Characterization of Stitched Multiaxial Warp Knit Fabric Composites and Channel Beam Manufacturing (Stitched 다축경편 복합재료의 기계적 특성 및 U 빔 성형)

  • 변준형;이상관;엄문광;김태원;배성우;하동호
    • Proceedings of the Korean Society For Composite Materials Conference
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    • 2002.10a
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    • pp.280-283
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    • 2002
  • In the manufacturing of large scale composite structures, the cost-effective processing and the enhancement of structural performance are critical. One of the most effective ways for this purpose is to use stitched multiaxial warp knitted (MWK) perform in the resin transfer molding process. This study reports the effect of stitching on the mechanical properties of MWK composites, and the feasibility processing of the thick U-beam structure utilizing the stitched preforms. Permeability of the preform, viscosity and cure property of the epoxy resin have been measured. The results of resin flow analysis has been used in determining the gate/vent locations of the RTM mold. Cross-sectional observation of the channel beam prototype demonstrated that the resin impregnation was almost complete, except for some surrounding area of stitched yarns.

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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.

Analysis of Structure and Prediction of Mechanical Properties for 3D Composites (3D 복합재료의 구조해석 및 기계적 물성 예측)

  • 유근수;전흥재;변준형;이상관
    • Proceedings of the Korean Society For Composite Materials Conference
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    • 2002.10a
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    • pp.292-295
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    • 2002
  • In this paper, an analytical model for the prediction of the elastic properties of multi-axial warp knit fabric (MWK) composites is proposed. The geometric limitation, effect of stitching fibers and design parameters of MWK composites are considered in the model. The elastic behavior of MWK composites was conducted by using an averaging method. The predicted elastic properties are in reasonably good agreement with experimental values. Finally the effect of stitching in the MWK composites are discussed.

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Mechanical Properties of Warp Knit Reinforced Composites (경편물 복합재료의 역학적 특성)

  • 신은호;서문호
    • Proceedings of the Korean Fiber Society Conference
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    • 2001.10a
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    • pp.139-142
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    • 2001
  • 섬유강화 복합재료는 상대적으로 아주 높은 질량 대비 탄성계수를 가지고 있으므로 경량화 할 필요가 있는 물체나 관성력이 최소로 요구되는 부분에 사용되고 있다. 대부분의 복합재료판들은 고탄성-저신도 섬유를 사용하여 만든 단층의 복합재료를 그배향 방향을 조절하여 원하는 방향 특성으로 접근한다. 그러나 다층으로 만들어 2차원의 등방성 소재로 만들어 사용하고 있다. 그러나 이러한 경우에는 여러 층을 결합 하여야 하는 번거로움과 두께의 제약 등이 있다. (중략)

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