• 패션비즈니스
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• 제19권5호
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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.

• Fibers and Polymers
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• 제5권1호
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• pp.25-30
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• 2004

The present paper reports the impact of thermal treatment on the characteristics of core-sheath type hybrid technical yarns. The core-sheath type hybrid yams are prepared using DREF-III technology. Polyester and glass multifilaments are used as core components whereas the cotton and polyester staple fibers are the sheath components wrapped around the core filament with different proportions to form a hybrid structure. The thermal treatment is carried out both in dry and in wet state under relaxed condition and the thermal shrinkage, sheath-slipping resistance and tensile and bending properties of hybrid yarns have been studied. Thermal treatment markedly increases the thermal shrinkage and sheath-slipping resistance of hybrid yarns with polyester multifilament in core, but insignificant effect for yarns with glass multifilament in core. Breaking elongation of hybrid yams with polyester multifilament in core increases with treatment temperature. The hybrid yarns with glass multifilament in core are least affected by thermal treatment.

• 한국잠사곤충학회지
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• 제47권1호
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• pp.41-47
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• 2005

1. 가야금 줄의 내구성을 향상시키기 위하여 가야금 줄에 acrylic adhesive와 poly(vinyl alcohol)을 병용 처리한 결과 강려과 신도는 차이가 없었으나 하중 70%에서 절단할때까지의 반복회수는 화학가공처리 현이 무 처리한 현보다 48% 향상되었으므로 현의 내구성을 크게 향상시킬 수 있었으나 흡습율이 무처리 현보다 높았다. 2. 현의 내구성을 증대시키고 음량을 풍부하게 할 목적으로 생사와 polyester사의 혼합비율을 달리하면서 생사/폴리에스텔 복합현을 제조하고 물성을 조사한 결과 polyester사의 비율이 많아질수록 강력이 감소하였고 신도는 증가하여 가야금 줄로서 적당하지 않았으나 mono filament 사로서 강력이 우수한 polyester사를 사용하여 복합현을 만든 SSP 복합현의 경우 생사로 만든 현보다 강력이 우수하였다. 3. 새로운 현의 소재를 개발하기 위하여 생사(가잠사)와 작잠사와의 복합현을 제조하고 그 물성을 조사한 결과 가잠사/작잠사 복합현의 강력은 작잠사와 비율이 많아질수록 저하되었다.

• 한국잠사곤충학회지
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• 제44권1호
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• pp.37-41
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• 2002

실용성은 우수하나 위생성과 고급성이 매우 떨어지는 PET직물을 세리신을 이용하여 표면 개질함으로서 새로운 기능성을 부여하고자 하였다. Glutaraldehyde를 사용하여 세리신을 PET 직물에 가교시킬 경우 약 0.22%의 부착율을 보였으며, GA 수용액의 pH는 산으로 갈수록 좋고 세리신 수용액의 pH는 등전점에서 멀어질수록 반응이 쉽고 균일하게 일어났다. PDC 방법으로 세리신을 PET 직물의 부착시킬 경우 0.6%의 부착율을 보였는데 이는 가교제에 의한 경우보다 많이 부착이 되지만 직물에 균일하게 부착되지 않았다. 가교제 또는 PDC 방법을 통하여 PET 직물의 표면을 세리신으로 처리해도 수분율에 큰 영향을 주지 않았다. 즉 감량가공처리만으로도 흡수율이 크게 증가하였으며 이후 세리신을 처리하더라도 흡수율은 향상되지 않았으나 마찰대전성은 크게 향상되었다.

• 한국의류산업학회지
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• 제11권4호
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• pp.661-666
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• 2009

The purpose of this study is to analyze the dyeability of polyester(PET) fabric by thermal bonding with low melting component of bicomponent fiber and to describe the change of physical properties of thermal bonded PET fabrics. The PET fabrics were prepared with regular PET fiber as warp and bicomponent fiber as weft. The bicomponent fiber of sheath-core type was composed with a regular PET core and low melting PET sheath. The thermal bonding of PET fabric was carried out in pin tenter($195^{\circ}C$) for 60 seconds. In this study, we investigated the dye ability and fastness of the dyed PET fabric. Dye ability of E-type dyestuff is higher than S-type dyestuff. In the case of E- type dyestuff, the saturated dyeing time was 10minutes at $130^{\circ}C$. The washing fastness and light fastness were excellent as 4-5grade.

• 한국의류학회지
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• 제41권2호
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• pp.296-305
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• 2017

Gallnuts are known to exert various pharmaceutical properties that include anti-inflammatory, antimicrobial, antioxidant, and detoxifying effects. Gallnut extract is thought to be a particularly safe antimicrobial agent for textile application due to its natural origins. Hence, textiles were dyed with gallnut to develop multi-functional clothing material with no harmful effects. In this study, three kinds of cool touch woven fabrics, each comprised of 100% viscose rayon filament, viscose rayon filament/high absorption & quick dry (polyester) filament, and viscose rayon $filament/tencel^{(R)}$ spun yarn, were prepared and used as substrates for gallnut dyeing to especially develop functional cool touch textiles for summer clothing material. On the other hand, gallnut dyeing was conducted with mordanting with iron, lime or alum, which induced different colors on the dyed textiles. Dyed textiles were then investigated by SEM, FTIR, antibacterial test, and antioxidant test. Subsequently, gallnut dyed textiles indicated excellent antibacterial ability and deodorization activity regardless of mordant species. However, only gallnut dyed textiles mordanted with iron and alum showed significant antioxidant ability. In addition, the dyeing processes impair the cool touch feeling of the textiles by changing the micro structure of the textile surface.

• 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.

• 청정기술
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• 제16권4호
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• pp.245-253
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• 2010

대구경 강관 표면 보호를 위해 사용되는 필라멘트 와인딩 공정에 불포화 폴리에스터 (unsaturated polyester: UP)를 이용한 자외선 (ultraviolet) 경화 방법을 적용하고자, UP를 이용한 최적의 UV 경화 조건을 찾아보았다. 기존의 유기계 과산화물을 개시제로 사용한 열경화 방법에서는 개시제의 불안정성, 휘발성 유기물 발생, 열에 약한 대상물질의 변형 등 문제점이 발생하므로 이에 대한 개선책으로 UV 경화방법을 시도하였다. UV 경화에 사용되는 다양한 개시제 중에서 비교적 침투력이 높아서 두꺼운 고분자 층 형성이 가능한 개시제 2 종(Irgacure 819 및 Darocure 1173)을 선정하여 이들의 조합비율에 따라 경화된 UP 고분자에 대한 열역학적, 기계적 물성을 비교 분석하여 우수한 경화조건 (개시제 함량 1.5 phr, 혼합 비율 1:1.2, UV 램프로는 갈륨램프)을 찾아내었다. 또한 UP 광경화수지의 경도, 충격강도, 굴곡강도 향상을 위해 유리섬유를 수지 내에 적층하여 복합재료를 제조하고 이들의 특성을 비교한 결과 충격강도가 매우 향상되었다.

• 한국지반공학회:학술대회논문집
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• 한국지반공학회 2001년도 봄 학술발표회 논문집
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• pp.563-570
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• 2001

In this study, the charactersistics of horizontal drains used to stabilize the dredged fill are investigated experimentally by doing tensile strength test, discharge capacity test, and filter clogging test. The types of the drains selected for the study are filament type (Tyre-E), embossed type(Type-P) and heat bonded cubic type with the thickness 10mm(Type-010) and 5mm(Type-05). The results of tensile strength and discharge capacity test show that the performance of drain Type-O10 was better than the other drains. This is caused by the fact that the lattice shape core of drain Type-O10 has strong rigidity and minimizes the loss of the sectional area of discharge with increased confining pressure. Analyzing the compatibility of filters by the results of the strength characteristics test and clogging test, the filter of filament type drain produced with polyester clothed polyamide performed well.

• 한국염색가공학회지
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• 제11권6호
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• pp.18-23
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• 1999

PET POY(pre-oriented-yam) were treated by false twister to high bulky. False twister have many processing parameters velocity ratio(VR), belt cross angle$(\theta)$, 1st heater temp. and K(twisting tension/untwisting tension). we analyzed the effect of properties of textured polyester yam on processing condition. Initial modulus, thermal stress, No. of snarl is decreased by 1st heater. In VR=1.97, Dry and wet shrinkage is increased but is decreased by 1st heater in VR=1.564. K/S and cristallinity tend to increase by decreasing VR.