• 한국의류산업학회지
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• 제7권1호
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• pp.111-114
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• 2005

In this the study, polyester/cotton(P/C) blended fabrics with fine denier were developed to get the light weight compared with the traditional P/C blended fabrics. Moreover, the width of the fabrics was extended by the tenter during the final heat treatment to get the lower fabric density and lighter weight. Then, the physical properties of these fabrics were analysed. The results were as the follows: The developed fabrics had 22.6-31.6% lighter weight than the traditional fabrics with the same fabric width. The weight of fabric decreased drastically with the fabrics width down to 67.1 $g/m^2$. The fabric density for the warp direction decreased with the fabric width. The tenacity and the elongation of the developed fabrics was little lower than that of the traditional fabrics. The air permeability of the developed fabrics increased with that of the traditional fabrics. The stretch rate of the developed fabrics decreased with increasing the fabric width. Residual stretch rate of the developed fabrics was more stable than that of the traditional fabrics. Residual stretch rate of the developed fabrics increased with the fabric width, but the highest value was less than 5% which is quit stable.

• 한국염색가공학회지
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• 제18권2호
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• pp.39-45
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• 2006

The aim of this work is to develop sense-differentiated textiles using Thick-Thin polyester yarn(T-T yarn) with finer than 1 denier mono filament. The ITY(Interlace Textured Yarn) using T-T yarn with various over feed ratios of PET filament was manufactured with different shrinking percentage of core yarn and then the fabrics were woven on the same weaving 100m using ITY produced. The mechanical properties and the handles of the fabrics were examined with KES-FB system suggested by Kawabata. The shrinkage of ITY was increased with decreasing over feed ratio and increased with increasing heat treatment temperature of T-T yarn. The initial elasticity modulus of ITY was decreased with increasing over feed ratio and heat treatment temperature of T-T yarn. The tensile energy of fabrics was decreased with increasing of over feed ratio, but bending rigidity and shear rigidity of fabrics were increased with increasing of over feed ratio of PET filament. The results indicate that the fabric using T-T yarn with finer than I denier mono filament can be used for the purpose of sense-differentiated textile.

• 한국염색가공학회지
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• 제8권5호
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• pp.68-75
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• 1996

Even if fibers are practically identical with respect to chemical composition and denier, the dyeabilities are freqently a little different in an industrial processing. It is difficult to interpret the numerical values of dye diffusion coefficients from a dye solution into fibers. The main reasons are the multicomponent nature of the diffusion process and the inhomogeneities of the substrate, so-called, various kinds of ordered and disordered regions of polymers, void and pores. The equilibrium dye adsorptions and dyeing rates of a disperse dye into the several PET fibers having the same denier were determined at various temperatures. The dyeability of examined samples was divided into two groups, that is, lower dye adsorption fiber and higher ones at the lower temperatures. This result was discussed with the degree of crystallinity, DSC diagram, X-ray diffractometry and Porosimetry of the PET fiber, and an appropriate model for fine structure of PET fiber was proposed.

• 한국염색가공학회지
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• 제15권3호
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• pp.146-153
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• 2003

This article describes the metal ions adsorption of chitosan fibers. The chitosan fibers were manufactured by wet spinning using 2% acetic acid as solvent, 10% aqueous sodium hydroxide as non solvent, and 4%chitosan solution as a solvent. The adsorption characteristics of chitosan fibers towards 100ppm solutions of various metal ions such as Cu(II), Cd(II), Cr(III), Hg(II) were examined at different pH value by ICP-Atomic Emission Spectrometer. The adhesiveness of metallic ions to the chitosan fiber were increased with the increase of pH and the decrease of denier. On the other hand, from pH4, chitosan fiber that is immersed in metal ion aqueous solution of Cu(II) and Cd(II) became homogeneous solution because is dissolved. The adhesiveness of metallic ions to chitosan fiber were found to increased in a sequence of Hg(II)> Cr(III)> Cu(II)> Cd(II). The antimicrobial characteristics of the chitosan fiber by adhered metal ions, virgin chitosan fiber, and cotton fiber were evaluated. The antimicrobial activity of the fibers were increased with the decrease of denier.

• 한국잠사곤충학회지
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• 제14권1호
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• pp.43-47
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• 1972

견층부위별견사의 기계적특성을 파악하고저 Deniroscope와on을 이용하여 실험한바 다음과 같은 결과를 얻었다. 1) 견층별견사의 건조 및 습윤절단강도는 견사섬도감소율에 비례하여 저하한다. 2) 내층견사의 습윤항장력은 외층견사에 대하여 37%로 나타났다. 3) 습윤처리에 의한 전견층의 절단강도(g/d) 31%, 감소하였다. 4) 대섬도당 견사의 건조 및 습윤절단강도는 내층견사가 제일 높았다. 5) Apparent young's modulus는 내층견사에서 증가하였다. 6) 습윤견사의 절단신도는 건조견사에 비해 15% 증가하였다.

• 수산해양기술연구
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• 제59권2호
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• pp.110-116
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• 2023

In this study, samples of sea anchor canopy cloth mainly used in Korean jigging fishing vessels were collected and tested for performance evaluation. The canopy cloth of sea anchor is a basic element of form composition that is known to have the greatest influence on anchor performance. In order to evaluate the performance of sea anchor canopy cloth, five types of samples were tested for new metric count, tensile strength, water vapour transmission rate and drying speed according to the national standard (KS), and some correlations were identified. As a result of the test, the new metric count of cloths was 335.5-443.4 denier in warp and 217-447.6 denier in weft, and the minimum tensile strength was 860 N in warp direction and 430 N in weft direction. The apparent number and tensile strength of cloth were proportional, the water vapour transmission rate of the sample was 206.8 g/m²h, and the drying speed was 90-100 min. This study partially confirmed the performance evaluation based on speculation by the standard test method, and further research is needed on the clear relationship between the research results and the performance of the sea anchor.

• 수산해양기술연구
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• 제31권4호
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• pp.362-371
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• 1995

건착망의 침강에 관한 동태해석을 위한 기초 연구로서, 그물감의 재료가 다른 세 종류의 건착망을 총중량(수중중량 60g)이 일정하게 되도록 발돌의 양을 조절하고, 이것들의 침강특성을 구명하였다. 실험에 사용한 건착망은 그물실의 직경 및 발의 길이가 같은 폴리프로피렌계, 폴리아미드계 및 폴리 에스터계의 매듭 없는 그물감을 사용하여, 뜸줄의 길이 420cm, 그물의 폭 86cm가 되도록 제작하고, 각각 PP, PA 및 PES 그물이라고 하였다. 회유수조의 수로상에 투망장치를 설치해서 정지상태의 수중에 투망하고 측면에 설치한 비디오 카메라를 이용하여 촬영 녹화하였다. 그리고, 그물에 표시한 측정점의 좌표를 화상해석 장치로 읽고 실험의 측정치을 구하였으며, 이를 해석한 결과는 다음과 같다. 1. PP 그물의 그물다발은 항시 수면 부근에 있고, 발돌에 작용하는 침강력에 의해 그물감이 전개해 간다. 2. PES 그물의 그물다발은 뜸줄과 발줄 사이의 부분, 즉 그물 폭의 거의 중간에 있다. 3. 그물 아랫자락의 평균 침강속도는 PP 그물이 10.7cm/s로 가장 빠르고, PA그물이 9.7cm/s, PES 그물이 9.2cm/s의 순으로 늦게 나타났다. 4. 투망할 때 작용하는 수평방향의 운동력은 무시 가능한 범위의 값이었다.

• 한국잠사곤충학회지
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• 제2권
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• pp.41-47
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• 1962

1961년 춘기에 난문수와 각종 실용형질과의 표현, 유전 및 환경상관과 각형질의 유전력을 농촌진흥청 잠업시험장에서 잠품종 각도 연락시험에 공시하는 8 품종에 대하여 조사하였으며 각 시험장에 보존되어 있는 잠품종중 25 품종에 대하여는 상관, 계통별 난문수 또는 변이를 조사하여 다음과 같은 결과를 얻었다. (1) 난문수와 전망중, 견층중 및 섬도와는 고도의 빈표현상관과 빈유전상관을 나타냈으며 환경상관은 나타나지 않았다. (2) 난문수는 중국계통이 가장 많고 일본계통이 중간이고 가주계통이 최소였다. (3) 감잠비율과 난문수와의 관계는 일정한 경향이 없다. (4) 견층중과 계장의 유전력은 전견중, 섬도 및 난문수의 것에 비해서 적었다. (5) 난문집단의 소다각형 반문수가 많은 품종일수록 난문의 절대수가 많았다. (6) 난문수의 변이는 가주계통이 가장 크고 중국계통, 일본계통의 순으로 적은 것 같다. 전견중, 견층중, 및 섬도는 난문수를 기준으로 하여 그것들을 선발하면 간접적으 선발 효과를 높일 수 있을 것이며 특히 난시대에 선발함으로서 사육의 경비를 절약할 수 있을 것이다.

• 한국염색가공학회지
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• 제10권5호
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• pp.1-12
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• 1998

This study surveys the mechanical properties such as bending and shear properties to the weight reduction rate of PET fabrics. For this purpose, 12 kinds of satin and 18 kinds of plain weave fabrics are prepared with change of the physical properties of weft yarn(T.P.M., density, and denier) The weight reduction rate was 0％, 12％, 25％, and 30％. Bending rigidity and hysteresis, shear rigidity and hysteresis were measured and discussed with theoretical values in relation with weft twist, yarn linear density, weft fabric density and weave structures.

• 한국감성과학회:학술대회논문집
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• 한국감성과학회 2000년도 춘계 학술대회 및 국제 감성공학 심포지움 논문집 Proceeding of the 2000 Spring Conference of KOSES and International Sensibility Ergonomics Symposium
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• pp.394-399
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• 2000

Composite materials are drawing attention as the leading fabrics for casual wear. One reason for this is the shift in fashion trend to more casual apparel. Espectations of further acceleration in this area are so high that woven fabric movement are taking more and more of a new turn away from conventional materials made of fine denier filament to wool-like fabrics by mellange effects.