• Proceedings of the Korean Fiber Society Conference
• /
• 2000.04a
• /
• pp.357-360
• /
• 2000

• Textile Science and Engineering
• /
• v.36 no.10
• /
• pp.784-790
• /
• 1999

Setting behavior of spandex yarn in heat treatments for the anti-crease treatment of knit fabric made of cotton/spandex 2-ply yarn was investigated. Three different methods, i.e., dry-heat treatment, hot water treatment, and steam treatment, were used to set the spandex yarns. Setting properties were measured via length changes of the treated samples. Tensile strength retention and elongation of the treated samples were also measured. The results indicate that length changes of the samples treated with hot water and steam are larger than that treated with dry heat due to the presence of moisture. The length change of spandex yarns increases with increasing treatment temperature, time and extension. Among the three factors, extension has the most significant effect on the setting behavior. Spandex yarn set at a certain condition can be set again if it is treated under more severe conditions. Tensile strength and elongation of spandex yarn decrease with increasing length change.

• Journal of the Korean Society of Costume
• /
• v.51 no.1
• /
• pp.75-85
• /
• 2001

The purpose of this study is to provide for the basic data useful to the high quality knitwear production. For this purpose, knit promotions that product knitwear for 20 age ∼ 30 middle age women were sampled to survey the fabric planning and production·quality management of knitwear, and their directors were surveyed through direct interviews. Data is processed by a computer(SPSS) and analyzed by using frequency, percentage, mean. The results of this study are as fellows. 1. Most of the sample companies were getting smaller or pettier in terms of capital, number of employees. 2. Knit promotions were universally using acrid and wool as knit fabric. 3. Knitwear tended to be producted much in knit promotions. 4. It is needed to use high quality fabric and perform careful sewing for knitwear quality rising.

• Proceedings of the Korean Fiber Society Conference
• /
• 1999.10a
• /
• pp.279-282
• /
• 1999

• Journal of Fashion Business
• /
• v.6 no.5
• /
• pp.1-11
• /
• 2002

Today, great percentage of apparel fabrics comprise knit products. A few apparel items are almost exclusively made from knit products including sweaters, T-shirts, lingerie, and hosiery. In weft knits, intermeshing yarn traverses the fabric crosswise. The production rate of knitting machines is about four times higher than that of conventional looms iin proportion to the amount of fabric produced per unit time. Knit apparels fabrics are noted for freedom of body movement, easy-care, resilience, soft draping and quality. The appearance of fabrics is of prime importance along with tactile features such as smoothness, crispness, stiffness when we deal with the handling evaluation of the textiles. In practice, the quality and performance of fabrics judged by sighted evaluators, and it is perhaps logical, in attempting to establish an effective fabric objective measurement system. It is worthwhile to make objective measurement that correlate well with subjective evaluations made by sight and touch together. However, it often imposes difficulties to effectively measure and analyze the appearance or optical properties of the textile surface features. In this study, an attempt is made to provide a preliminary approach to the analysis of the gloss property, which is one of the optical properties of fabrics. The specimens range from 70/24 nylon 6 filament yarn knit fabric to 70/68 nylon 6 filament yarn knit fabric, the latter being finer. A few three-dimensional models based on Peirce's model of knit stitch have been proposed and material properties were given to calculate the properties. Goniophotometric measurements of the specimens were also carried out.

• Textile Science and Engineering
• /
• v.35 no.12
• /
• pp.755-763
• /
• 1998

The effect of yarn count and twist multiplier on the dimensional stability and handle of weft knit fabric has been studied by comparing data acquired under the dry, wet and fully relaxed state. The sample weft knit fabrics have been prepared at two different levels of yarn feeding length using 10 kinds of cotton yarns with 2 different yarn counts of Ne50, 60 and 5 different levels of twist multiplier. Thus ten different kinds of cotton yarn have been used. The weft knit fabric samples have been made using the same knitting machine under the same driving condition except the yarn feeding length. And the studies were analysed statistically using the multiple regression equations of SAS package and the following regression results were obtained. (1) The relationship between twist multiplier and relaxations was; Ks=8.44＋3.54TM in dry relaxed, Ks=4.l1＋6.l1TM in wet relaxed, and Ks=4.82＋5.9TM in fully relaxed state. (2) The relationship among twist multiplier, yarn number and spirality was; spirality=-65.68＋9.63TM＋0.97Ne in dry relaxed, spirality=-94.38+12.13TM＋1.35Ne in wet relaxed, spirality=-89.6＋12.69TM＋l.15Ne in fully relaxed state. Where Ks, TM, Ne are abbreviations of relaxation constant, twist multiplier, yarn count.

• Fibers and Polymers
• /
• v.7 no.2
• /
• pp.203-212
• /
• 2006

The purpose of this study was to examine the effects of the structural properties of plain knit fabrics on the subjective perception of textures, sensibilities, and preference among consumers. This study, then, aimed to provide useful information with respect to planning and designing knitted fabrics by predicting the subjective characteristics analyzed according to their structural properties. For this purpose, we employed statistical analysis tools, such as factor and regression analysis and an adaptive-network-based fuzzy inference system(ANFIS), thereby combining the merits of fuzzy and neural networks and presupposing a non-linear relationship. Through factor analysis, we also categorized the subjective textures into 'roughness', 'softness', 'bulkiness' and 'stretch-ability' with R2=70.32%: and categorized the sensibilities into 'Stable/Neat', 'Natural/Comfortable' and 'Feminine/Elegant' with R2=68.12%. We analyzed subjective textures, sensibilities, and preference with ANFIS, assuming non-linear relationships; consequently, we were able to generate three or four fuzzy rules using wool/rayon fiber content and loop length as input data. The textures of roughness and softness exhibited a linear relationship, but other subjective characteristics demonstrated a non-linear input-output relationship. Compared with linear regression analysis, the ANFIS exhibited had higher predictive power with respect to predicting subjective characteristics.

• Textile Science and Engineering
• /
• v.44 no.6
• /
• pp.339-348
• /
• 2007

The purpose of this research was to find out the factors that explain the subjective texture sensibility and image sensibility of knit fabrics. 43 different kinds of commercial knit fabrics were assessed subjectively by 178 consumers using the 7-point scale of 65 descriptors. The dimensions evaluating the texture sensibility and image sensibility of knit fabrics were also developed using the multi-dimensional scaling method. Hand and preference were predicted by the texture and image sensibility factors, respectively. The texture sensibility is explained by five factors: bulk, stiffness, density, elasticity and evenness. The image sensibility is explained by seven factors: feminine/masculine, new, casual, clear, classic, old and orderly. Better hand is found in knit fabric of pliable, light, and dry & bouncy texture. Higher preference is found in knit fabric of clean, comfortable, silent, attractive and chic image. The hand was predicted 51.1% with stiffness, density, bulk, and evenness factor. The preference was predicted 43.6% with new, feminine/masculine, casual, orderly and clear factor. The correlation coefficient between hand and preference was 0.358. Image sensibility is more important than hand on the preference of top outerwear.

• Fashion & Textile Research Journal
• /
• v.13 no.6
• /
• pp.990-995
• /
• 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.

• Journal of the Korean Society of Clothing and Textiles
• /
• v.24 no.8
• /
• pp.1167-1176
• /
• 2000

운동화 안감으로 사용되는 부드러운 천연 가죽의 내부 구조 및 쾌적성과 유사하게 개발한 3종류의 편성포에 관하여 수분 전달 능력을 비교 측정하였다. 편성포 표면에 이면으로 땀액의 이동성을 측정하기 위하여 새로운 실험 절차를 고안하여 측정한 결과, 편성포에 가한 압력은 수분 이동 능력에 영향을 미치지 않았다. 그러나 편성포의 기모가 있는 표면과 기모가 없는 이면의 수분 이동 능력이 달랐고, 3종류중 한 편성포에서는 표면의 기모는 수분전달을 저하시켰다. 표면은 기모, 이면은 평편조직으로 두껍고 무거운 편성포의 수분전달이 가장 좋았고 이 편성포와 같은 조직이면서 두께와 중량이 적은 편성포는 수분전달이 감소되었다. 수분이동 능력을 향상시키기 위하여 편성포의 섬유와 구조를 고려할 때 기모량은 중간 정도이고 기모된 표면을 수분에 접하도록 하는 것이 바람직하다. 이렇게 함으로서 더 효과적인 수분 이동이 이루어져서 피부 표면에서 땀증발이 좋았다. 이 연구에 사용된 실험 방법은 편성포의 수분 이동 체계에 관한 이해 증진에 기여할 수 있다고 본다.