• Title/Summary/Keyword: rib stitch

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A Study on the Analysis and Minimization of Structural Error in Weft Knitting - Using Cotton Yarn - (위편성물의 설계 오차값 분석에 관한 연구 - 면사를 사용하여 -)

  • Kwon, Jin;Kwon, Myoung-Sook
    • Journal of the Korean Society of Costume
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    • v.57 no.5
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    • pp.1-11
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    • 2007
  • The purpose of this study was to analyze and minimize structural error between sample knitting and actual knitting in weft knitting apparel. Basic stitches used in this study were plain stitch, $0{\times}0$ rib stitch, $1{\times}1$ rib stitch, $2{\times}2$ rib stitch, Milan rib stitch. They were knitted into two different gauges(7 and 12 gauge) and 6 different sample sizes by computer program. The weight, length and width of these 5 basic knitting stitches were measured and their changes according to gauge, stitch and knitting were calculated and analyzed. The results were as follows; The weight of $0{\times}0$ rib stitch was the largest, followed by Milan rib stitch, $2{\times}2$ rib stitch, plain stitch and $1{\times}1$ rib stitch. As the density of stitch per unit area increases, the weight increases. The length of $0{\times}0$ rib stitch was the largest, followed by plain stitch, $2{\times}2$ rib stitch, $1{\times}1$ rib stitch and Milan stitch in both 7 and 12 gauge. As the number of course increases, the length increases accordingly. However, its increase ratio shows higher than that of number of course. It means that the reduction in number of course is needed to get aimed length. The width of Milan rib stitch was the largest, followed by $0{\times}0$ rib stitch, plain stitch, $2{\times}2$ rib stitch, $1{\times}1$ rib stitch in 7 gauge. In 12 gauge, Milan stitch, plain stitch and $0{\times}0$ rib stitch were the highest, followed by $2{\times}2$ rib stitch and $1{\times}1$ rib stitch. It showed that the change in shape of stitch influenced on the width more than the length of stitch.

Influence of Construction Combination of Rib Stitch and Milan Stitch on Objective Hand Values of Weft Knit (위편성물에서 Rib stitch와 Milan stitch의 편성결합이 태에 미치는 영향)

  • Kwon, Jin;Kwon, Myoung-Sook
    • Journal of the Korean Society of Clothing and Textiles
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    • v.31 no.1
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    • pp.68-76
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    • 2007
  • The purpose of this study is to investigate change of mechanical and physical properties, shape behavior and hand value in weft knit when rib stitch and milan stitch are combined. The knit stitches used in this study are plain stitch, half milan rib stitch, milan rib stitch, $2{\times}1$ rib stitch, $2{\times}1$ half milan rib stitch and $2{\times}1$ milan rib stitch. We analyzed physical and mechanical properties(tensile, bending, shear, compression, surface properties, thickness and weight) of the knit stitches and calculated their primary hand value and total hand value through translational formulas using the KES(Kawabata Evaluation System). The results are as follows; In evaluation of mechanical properties and hand values of knit stitches, plain stitch had the highest flexibility and the lowest T.H.V. as women's winter knit wear. Since $2{\times}1$ rib stitch had too high elongation in one direction, although it had the highest T.H.V, it needs to be careful when plain stitch and $2{\times}1$ rib stitch are applied for women's winter knit wear. Since Milan rib stitch and $2{\times}1$ milan rib stitch had high T.H.V. similarly, it is considered that they are suitable for women's winter knit wear. Specially, when Milan stitch is combined with $2{\times}1$ rib stitch, its shape stability and fullness are contained and flexibility is added on it. Therefore, $2{\times}1$ milan rib stitch can be also applied for women's winter knit wear.

Studies on Estimation of Thickness and Stitch Length of the 3-Stroke Rib Stitch-knit Fabrics (3단양면편의 두께와 편환장 확정에 관한 연구)

  • 박신웅;조호현
    • Textile Science and Engineering
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    • v.18 no.2
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    • pp.1-7
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    • 1981
  • To the present, the stitch length of 3-stroke rib stitch has been calculated on the basis of lapping ratio derived from the needle spacing of plain stitch length. This study is carried out by obtaining a stitch length on the basis of H. Kidacki and E. Dyson's model, which is concerned with unit stitch length and needle spacing as factors. And thickness of 3-stroke rib stitch was calculated through a concept of simple elastica. The results were as follows; 1. The thickness of 3-stroke rib stitch was correlated to t=5D+β'l if non-compressibility of filament yarn was assumed and t"=D' when filament yarn were flattened by compress and flattened about 10%. 2. A stitch length could be calculated from machine gauge when the needle loop length was known and the weight of repeating unit, total run-in and yarn consumption per color etal were estimated exactly. 3. In 3-stroke rib stitch, the fractional stitch length occupied by needle loop was about 40%.

A Study on the Knit Pattern Considering the Characteristics of Rib Stitch(2) -Focused on $2{\times}1\;and\;2{\times}2$ Rib Stitches (리브조직의 특성을 고려한 니트 패턴 연구(2) -$2{\times}1$ rib 조직과 $2{\times}2$ rib 조직을 중심으로-)

  • Kim, Soo-Ah;Suh, Mi-A
    • The Research Journal of the Costume Culture
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    • v.13 no.1
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    • pp.47-59
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    • 2005
  • This study aims to measure stretch rate of standard weight in the $2{\times}1$ rib stitch and $2{\times}2$ rib stitch, and to apply features of rib stitch to the knit pattern. The reviewer examined the sample knit for test with 100% wool, $2/48's{\times}2$, 12 gauge, and then made knit patterns and sample clothes for test considering stretch rate of standard weight of 10gf, 15gf, 20gf, 25gf based on the results from the former test, and finally estimated the try-outs for sample clothes. This study came out with the following results: From the functional estimate of knit patterns made by standard stretch rate of each stitch, the 20gf weight sample clothes of $2{\times}1$ and $2{\times}2$ rib stitchs were in high estimate. For the bust, B/4~ -4.6cm knit pattern was made of $2{\times}1$ rib stitch, B/4~5.3cm of $2{\times}2$ rib stitch. In conclusion, because $2{\times}1$ and $2{\times}2$ rib stitchs has the much higher stretch rate in the direction of the course than $0{\times}0$ ad $1{\times}1$ rib stitchs, high stretch rate of standard weight should be applied to the case of making knit wear. It is expected that this will lead stable sizing and measurement system when used in making knit patterns, and satisfy knit wearers' various needs.

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A Study on the Knit Pattern Considering the Characteristics of Rib Stitch(1) - Focused on 0${\times}$0 and 1${\times}$1 Rib Stitches (리브조직의 특성을 고려한 니트 패턴 연구(1) -0${\times}$1 rib 조직과 1${\times}$1 rib 조직을 중심으로)

  • 김수아;서미아
    • The Research Journal of the Costume Culture
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    • v.12 no.5
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    • pp.769-780
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    • 2004
  • This study aims to measure stretch rate of standard weight in the direction of the knit stitch course by the difference in the way of weaving rib stitch, the most elastic stitch of all the knit stitches and to apply features of rib stitch to the knit pattern. The reviewer examined the sample knit for test with 100% wool, 2/48's 2, 12 gauge, and then made knit patterns and sample clothes for test considering stretch rate of standard weight of 10gf, l5gf, 20gf, 25gf based on the results from the former test, and finally estimated the try-outs for sample clothes. This study came out with the following results. From the functional estimate of knit patterns made by standard stretch rate of each stitch, the l5gf weight sample clothes of 0×0 and 1×1 rib stitches looking similar to plain stitch. For the bust, B/4-1.0㎝ knit pattern was made of 0×0 stitch, B/4-1.2㎝ of 1×1 rib stitch. In conclusion, because rib stitch has the much higher stretch rate in the direction of the course than other stitches, low stretch rate of standard weight should be applied to the case of making knit wear. It is expected that this will lead stable sizing and measurement system when used in making knit patterns, and satisfy knit wearers' various needs.

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A Study on the Structural and Tensile Properties according to Knitting Methods with Rib Stitch - Focused on Wool Yarn -

  • Ki Hee-Sook;Suh Mi-A
    • The International Journal of Costume Culture
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    • v.7 no.2
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    • pp.77-86
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    • 2004
  • The purpose of this study is to characterize physical and tensile properties according to a knitting method as basic materials for solving the difficulties that occur due to the fact that the crosswise elongation is most different among knit stitch at the time of measuring elongation of knitwear. The sample used for this study was wool $100\%$ and was knitted into two, that is, controlled loop length controlled to properties of structure and fixed loop length by using Shimaseiki SES-124S 12G computer automatic flat knitting machine with DSCS device. Also, the density of rib fabric was 12gauge and its quantity was a total of seven of $0{\times}0,\;1{\times}1,\;2{\times}1,\;2{\times}2,\;3{\times}3,\;4{\times}4$ and including plain fabric, and knitted 2 pieces of sample of 300 wale${\times}400$ course. In conclusion, rib stitch has the much higher stretch rate in the direction of the course than other stitches.

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Physical Properties of 1×1 Rib Knitted Fabrics Using A/W (A/W사로 편성한 1×1 리브편의 물성 평가)

  • Yea, Su-Jeong;Kim, In-Young
    • Fashion & Textile Research Journal
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    • v.14 no.4
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    • pp.629-634
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    • 2012
  • Knitted fabric using acrylic/wool blended yarn (A/W) is increasingly used in the knit industry; subsequently, research on knitted fabric using A/W has increased. This study presents an scientific database from evaluating physical properties of $1{\times}1$ rib stitch using A/W. In this study,$1{\times}1$ rib stitch using A/W were made at various knitting tensions (dial no. 2-6) and the number (4-6) of ply yarn. The physical properties of $1{\times}1$ rib stitch using A/W were measured and analyzed. The density was in the range 5.5-6.4 wales/cm and 4.0-5.6 courses/cm, respectively. The density increased when less plying yarns and more knitting tension were added during knitting. The thickness was in the range of 1.592-2.362 mm and the tensile strength was in the range 32.75-53.63 Kgf/mm. The burst strength was in the range 107.8-139.2 $N/cm^2$. Thickness, tensile strength, and burst strength increased as the number of ply yarn and the knitting tension increased. The elongation and the recovery extension rate were in the range 102.29-112.13% and 96.4-97.7%, respectively. The heat retention rate was in the range 59.3-65.1%. There was no difference of the elongation and the recovery extension rate and the heat retention rate by the knitting tension and the number of the ply yarn. The permeability was in the range 170.5-396.3 $cm^3/cm^2/sec$. Air permeability decreased as the number of ply yarn and the knitting tension increased. The pilling properties were excellent for all $1{\times}1$ rib stitches.

A Study on the Water Vapor Permeability of Weft Bnitted Fabrics(I) Effects of Temperature, Relative Humidity, Yarn Count and Fabric Structure - (위편성물의 투습성에 관한 연구(I) -온도, 상대습도, 번수 및 편조직의 영향-)

  • 이덕래;최종주
    • Textile Science and Engineering
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    • v.34 no.9
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    • pp.635-644
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    • 1997
  • The purpose of this study was to determine the effect of yarn count (card yarn Ne 30, 40, 50 and 60), stitch (plain, 1$\times$1 rib and interlock), temperature(2$0^{\circ}C$, 3$0^{\circ}C$ and 4$0^{\circ}C$) and relative humidity (55%, 65% and 80%RH) of cotton knitted fabrics on the water vapor permeability. The results were as follows : The weight of permeated water vapor can be functionalized with the distance between the sample knitted fabrics and absorbent as $y=ae^{-x}+b$. The effective distance between the sample knitted fabrics and the absorbent was found to be about 11.35 mm at plain and rib stitch, and interlock stitch was about 12.00 mm. The water vapor permeability of rib stitch was excellent rather than that of plain and interlock stitch at constant temperature and humidity, but regardless of yarn count and stitch structure, that was nearly leveled at 1 hour, however that of plain and rib stitch had superior to interlock stitch of fine yarn count at 3 hours.

Physical Properties of Various Structured Knitted Fabrics (니트의 편성조직에 따른 물성 평가)

  • Yea, Su-Jeong;Song, Wha-Soon
    • Fashion & Textile Research Journal
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    • v.13 no.6
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    • pp.990-995
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    • 2011
  • This study analyzed the effects of the knit stitch type, fiber composition, and yarn thickness on the mechanical properties of knitted fabric. The results were as follows: The course density was the highest in the case of the rib stitch. On the other hand, the wale density was the highest in the case of the float stitch. The thickness was the highest in the case of the rib stitch. The same results were obtained even for different fiber compositions and yarn thicknesses considered in this study. The burst strength of wool knit fabric was higher than that of A/W knit fabric. The stiffness was the lowest in the case of the plain stitch. The same results were obtained even for different fiber compositions and yarn thicknesses. The pilling properties were excellent for all knit stitches, fiber composition, and yarn thicknesses as pilling degree : 5. The air permeability decreased in the following order : rib > plain > float stitch. The same results were obtained even for different fiber compositions and yarn thicknesses. The heat retention rate decreased in the following order : rib > float > plain stitch. The same results were obtained even for different fiber compositions and yarn thicknesses.

A Study of the Physical Properties of Weft Knit Fabrics (위편조직(緯編組織)의 물성(物性)에 관한 연구(硏究))

  • Kim, In-Suk;Lee, Soon-Hong
    • Journal of Fashion Business
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    • v.2 no.4
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    • pp.93-101
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    • 1998
  • Knit products which had been limited only to underwear, recently became popularized, fashionized and highly classified covering even outer garments such as sportswear like golfwear, woman's dress, and man' s suit. As fashion cycle is getting shorter and the more a nation advanced prefers knit to woven fabrics knit industry has a very bright prospect, particularly woman's knit which is sensitive to fashion can be said as a fashion product with high value added. This study is to grasp the physical properties of stitch which are fundamental to the development of knit products. For this purpose, 2/20s of 100% wool were woven by the author of this study to basic plain stitch, rib stitch, varied transfer stitch, and float stitch on a SEMASEIKI cross knitter 7G to test the physical properties, and the result was as follows; 1. As for the relation between knit stitch and rate of extension recovery, rate of extension recovery was higher in the course direction than in the wale direction of three stitches except transfer stitch; rib stitch showed the highest rate of extension recovery in the course direction while float stitch showed the highest rate of extension recovery in the wale direction. 2. As for the relation between knit stitch and bursting strength elastic rib stitch showed higher bursting strength to indicate elasticity is an important factor of bursting strength and float stitch showed higher bursting strength too to indicate that the floating yarn on the surface plays a role of support. 3. As for the relation between knit stitch and air permeability perforated transfer stitch showed the lowest air permeability to prove that the size of perforation affects on the air permeability a great deal. 4. As for the relation between knit stitch and warmth retaining rib stitch through two lined needle bar showed the highest degree. The reason the warmth of perforated transfer stitch didn't decrease much was because the perforation wasn't big enough and content of air increased from the unevenness of the perforated parts through stitch variation. Based upon this result, each stitch can be characteristically summarized as follows; plain stitch showed a stable condition of knit cloth in four kinds of physical property test. And rib stitch is proper to tighten the edge of sleeve or clothe making use of its excellent extension recovery and to make socks for the highest bursting strength and warmth retaining. In the case of transfer stitch, seasonable designs can be taken by controlling the size of loop. Considering the pleasantness, underwear should be made of stitches with good air permeability float stitch was revealed to have color and pattern effects and a great bursting strength. This study has limitations in the aspect that it dealed with a small part of various knit stitches and the items of physical property test were not enough. The author of this study hopes that further studies would make deeper understandings about knit stitch based on more varied stitches and physical property tests ultimately to contribute to the development of fashionable designs proper to maximize the usage, function and originality.

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