• 한국의상디자인학회지
• /
• 제21권3호
• /
• pp.1-11
• /
• 2019

This study examined the cause of the phenomenon of shrinkage in machine-embroidered fabrics, specifically those made of thin and pliable fabrics. Four woven fabrics and two knitted fabrics were selected as samples for analysis. The fabrics selected were silk organza, flax linen, polyester chiffon, cotton batiste, polyester raschel mesh, and cotton jersey. The thickness and drapability of the fabrics were observed and the shrinkage of the various types of embroidered fabrics produced using satin & step stitch techniques were measured. Moreover, the correlation between the shrinkage of the machine-embroidered fabrics and the drapability of the original fabrics was analyzed. Also, the colorfastness of six embroidery yarns was determined. The results of the study are as follows: first, the shrinkage of machine-embroidered fabrics increased at a greater rate than in embroidered knitted fabrics as compared to rates in embroidered woven fabrics. Moreover, in terms of stitch techniques, there was a greater shrinkage rate when satin stitch was applied compared to step stitch. Second, the shrinkage rate of machine-embroidered fabrics decreased when a stabilizer was fused onto the fabric. The shrinkage rate also decreased for fabrics when fused with paper stabilizer compared to those without it, and the rate decreased at a greater amount with paper stabilizer as compared to alginate film. Third, since there was a strong correlation between the shrinkage rate of the embroidered fabric and the drapability ratio of the original fabric, it was generally the case that the more pliable the fabric was, the greater the shrinkage rate was when the fabric was embroidered. Fourth, while the embroidery yarns mainly used in machine-embroidery presented an overall excellent level of colorfastness, there was slight color migration of level 4 to level 5 when using viscose rayon.

• 감성과학
• /
• 제24권2호
• /
• pp.49-56
• /
• 2021

본 연구의 목적은 생체 신호 측정 압력 및 인장 직물 센서의 전극을 자수 공정을 이용하여 제작할 때 전도사의 필요 물성을 파악하는 것이다. 스마트 웨어러블 제품의 전극을 전도사를 이용한 자수 공정을 통해 전극 및 회로 등을 제작하면 불필요한 재료 손실이 없고 복잡한 전극 모양이나 회로 디자인을 컴퓨터 자수기를 이용하여 추가 공정 없이 제작할 수 있다. 하지만 보통의 전도사는 자수 공정 내의 부하를 못 이기고 사절 현상이 발생하기에 본 연구에서는 silver coated multifilament yarn 3종류의 기계적 물성인 S-S curve, 두께, 꼬임 구조 등을 분석하고 동시에 자수기의 실의 부하를 측정하여 자수 공정 내 전도사의 필요 물성을 분석하였다. 실제 샘플 제작에서 S-S curve의 측정 결과가 가장 낮은 silver coated polyamide/polyester가 아닌 silver coated multifilament의 사절이 발생하였으며 그 차이는 실의 꼬임 구조와 사절이 일어난 부분을 관찰한 결과 수직으로 반복적인 부하가 일어나는 자수 공정에서 꼬임이 풀리면서 사절이 일어나는 것을 알 수 있었다. 추가적으로 압저항 압력/인장 센서를 제작하여 생체 신호 측정용 지표인 gauge factor를 측정하였으며 스마트 웨어러블 제품의 대량 생산화에 중요한 부분인 자수 전극 제작으로의 적용 가능성을 확인하였다.

• 한국의상디자인학회지
• /
• 제24권4호
• /
• pp.87-99
• /
• 2022

The purpose of this study is to develop machine embroidery textile designs for each technique that can be expressed using a single-headed computer embroidery sewing machine through a machine embroidery CAD system. For research, embroidery CAD utilized the Artistic digitizer, and the guillotine computer-mechanical magnetization machine used ELNA. The design concept was limited to portraits and relics of independence activists in six memorial halls built in Korea. The results of this study are as follows. First, it was found that the machine embroidery texture, which could only be produced by industries in the past, can be expand in the infinite creative embroidery design area by enabling the digitalization of motif images and the simulation of machine embroidery techniques through various layout options. Second, in the development of machine embroidery textures, it was found that the setting of the width, height, axis ratio, stitch, object, path, length, density, layer order, etc. in embroidery CAD is a very important part of determining the completeness of the embroidery results. Third, mechanical embroidery textile designs, which can be represented by single-head computer machine embroidery machine were able to show colorful embroidery results that differs from the original image by using seven main techniques and five deep technique alone or in combination, according to the designer's intention.

• 한국의류학회지
• /
• 제28권8호
• /
• pp.1057-1064
• /
• 2004

Silk, polyester, cotton, and wool fabrics were embroidered with varying stitch length of 3mm, 5mm, and 10mm to examine the difference in fabric shrinkage in terms of sewing direction, fabric thickness, cover factor, stitch length, and fiber type. Warp, filling, and bias direction of sewing resulted in no difference in fabric shrinkage. Within the samples with same stitch length, there was less fabric shrinkage in fabrics with higher fabric thickness or higher cover factor. There was larger shrinkage when sewn with longer stitch length. Comparing fabrics with different fiber types but similar fabric thickness, silk and polyester fabrics showed the smallest fabric shrinkage and wool fabrics showed the largest shrinkage. It is shown that similar fabric shrinkage between silk and polyester is due to the similarity in cover factor.

• 대한기계학회:학술대회논문집
• /
• 대한기계학회 2005년도 창립60주년 기념 추계 학술대회
• /
• pp.162.1-162.1
• /
• 2005

• 한국감성과학회:학술대회논문집
• /
• 한국감성과학회 2012년도 춘계학술대회
• /
• pp.98-100
• /
• 2012

• 월간 기계설비
• /
• 통권57호
• /
• pp.39-47
• /
• 1995

건설산업은 한정된 공간에 많은 인력과 장비가 동시에 투입될 뿐만 아니라 대부분의 작업이 고층 또는 지하 등 취약한 장소에서 이루어지고 있어 사망 등 증대재해가 빈발하여 막대한 인명피해와 경제적 손실이 발생하고 있다. 지난해 건설재해로 인한 사망자수는 11월말까지 총 산재사망자 2천3백18명중 6백22명으로 나타나 건설업은 제조업과 함께 산재다발산업으로 인식되고 있으며, 특히 전문건설은 건설현장의 최일선에서 재해위험에 전면노출되어 있는 점을 감안할 때 보다 많은 시간과 경비를 투자하여 반복교육을 실시함으로써 근로자 스스로가 안전수칙을 준수하고 게을리 하지 않도록 유도해 나가야 하겠다.

• 월간 기계설비
• /
• 통권110호
• /
• pp.77-81
• /
• 1999

산업재해의 발생추이는 통계가 집계되기 시작한 64년 이후 65년 5.91$\%$를 정점으로 등락을 거듭하다 83년부터는 계속해 감속, 98년에는 0.68$\%$를 기록했다. 그러나 사망자수와 영구히 장해가 남는 신체장애자의 발생은 증가하는 추세에 있고, 최근 들어서도 건설현장의 대형재해와 석유산업단지의 폭발사고 등이 연이어 발생하고 있다. 정부는 이에 따라 향후 매년 사망$\cdot$재해자 10$\%$, 근로손실 5$\%$ 감소를 목표로 하는 산업안전선진화 3개년 계획을 추진하기 위한 `신 산업안전선진화기획단`을 출범시키고 본격적인 활동에 들어갔다. 산업재해 발생현황에 대해서 살펴보고 신 산업안전선진화계획의 세부내용을 알아보도록 한다.

• 한국기계가공학회지
• /
• 제17권4호
• /
• pp.160-168
• /
• 2018

Among the components of rotary hooks, a core component of an embroidery sewing system, a study was conducted to apply metal injection molding to the manufacture of a hook body and a housing that was very difficult to mechanical working. The correlation of feedstock, a mixture of binder and SCM 415 metal powder, and properties of the pressure-volume-temperature interrelationship, viscosity, specific heat, and thermal conductivity were measured. Injection molds for the hook body and the housing were developed through injection molding analysis using these properties and conducted injection tests. Optimal injection gate position and number, injection pressure, and injection time were obtained through a comparison of analysis results with the experiment results.

• 한국의상디자인학회지
• /
• 제25권2호
• /
• pp.151-165
• /
• 2023

This study aims to develop a mechanic embroidery bag design that reflects the symbolic image of Korean independence activists who sacrificed for the country so that today's Korea can exist. As a research method, the theoretical consideration and image collection of independence activists were conducted through a literature review and visits to the memorial halls of six independence activists. The bag design was developed using mechanic embroidery textile of 12 motifs manufactured in previous studies through the computer mechanic embroidery sewing machine, and the types were limited to totes, Boston, clutches, baskets, shoppers, hover bags, and hat boxes. The results of this study are as follows. First, it was found that the dense light and shade and delicate color expression of each motif design were the most important and achieved through the proper selection and utilization of embroidery yarn according to the mechanic embroidery expression technique for developing in-depth textile materials. Second, unlike in the past, when machine embroidery was difficult to handle, the spread of embroidery CAD and computer machine embroidery sewing machines made it easier for individuals to develop embroidery products. Third, this study once again emphasized the symbolism of Korean independence activists who sacrificed for the nation to exist at a time when it needs to be recognized due to the lack of fashion and diversity in cultural products containing historical and cultural meaning and values of the country. This study was able to develop computer machine embroidery textiles and various bag designs using various mechanic embroidery expression techniques that can highlight the symbolic image of each motif.