• 한국산학기술학회논문지
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• 제8권5호
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• pp.1211-1214
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• 2007

본 논문에서는 섬유사 붕괴 법(breaking thread)에 의해 서로 다른 고분자 간의 계면장력을 측정하는 방법에 관한 상세한 실험적인 방법을 설명하였다. 실험에 필요한 장비는 고분자를 용융시켜 관찰할 수 있는 hot stage와 이를 확대하여 관찰하는 광학 현미경이다 측정된 값은 문헌 치와 잘 일치하였다.

• 한국의류산업학회지
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• 제2권2호
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• pp.146-149
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• 2000

This study has been investigated the comparison of the seam strength of hand sewing with machine sewing using two kinds of sewing thread. On machine sewing, thread is used for sale, on hand sewing, thread is used for every fabric weft yarn. Breaking strength, efficiency and breaking mode of seams were examined under various sewing conditions using three kinds of fabric and three kinds of stitch type. The results obtained are as follows: The seam strength is not affected by sewing mechanism, but affected by a breaking mode : The type of slipped mode has a higher seam strength of hand sewing than that of machine sewing. When fabrics and threads were broken by a higher seam strength of machine sewing than that of hand sewing. Fabrics having low density using plain seam slipped more easily, so seam strength was greatly lesser. Fabrics having higher density had higher to seam strength. We should choose appropriate seams based on production, economy and aesthetics.

• 한국의상디자인학회지
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• 제15권2호
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• pp.57-64
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• 2013

As the clothing materials have been more functional and advanced, the cotton fabrics for dress shirts or blouses have been more qualified and the sewability for high degree of completion has been required. This study aims to identify the seam strength depending on the change of stitch density of fine cotton fabrics by fabric and thread and so the general seam performance of fine cotton fabrics by analyzing the seam efficiency and breaking mode of seams. For an experiment, 3 kinds of fine cotton fabrics and 2 kinds of threads were selected and the sample was made by changing the stitch density by four steps. Then, the seam strength was measured. Next, the seam efficiency and breaking mode of seams were analyzed on the basis of the results of seam strength measurement. The results are as follows: All fabrics showed the similar tendency in seam strength. The seam strength is related to the tensile strength and thread strength, it increased only to a certain stitch density. When the stitch density exceeded a certain level, fabrics were destroyed or threads were cut. Then, the seam strength didn't increase. Furthermore, the more the seam strength increased, the more the seam efficiency increased. For increasing the maximum stitch density, it was required to use the fabrics and threads which had similar properties, in other words, the high thread strength for the high tensile strength and the low thread strength for the high tensile strength.

• 복식문화연구
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• 제21권6호
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• pp.967-973
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• 2013

During high speed sewing, the needle thread is exposed to dynamic loading, short strike loading, inertia forces, friction, rubbing, force of check spring, bending, pressure, friction, impact, shock and thermal influence. The dynamic thread loading/tension alters throughout the stitch formation cycle and along its passage through the machine. The greatest tensile force occurs at the moment of stitch stretching, when the take up lever pulls for required thread length through the tension regulator. These stresses act on the thread repeatedly and the thread passes 50-80 times through the fabric, the needle eye and the bobbin case mechanism, before getting incorporated into the seam, which result in upto 40% loss in tensile strength of the sewing thread. This damage in the sewing thread adversely affects its processing and functional performance. In this paper, the contribution of dynamic loading, passage through needle and fabric, and bobbin thread interaction in the loss in tensile properties has been studied. It is observed that the loss in tensile properties occurs mainly due to the bobbin thread interaction. Dynamic loading due to the action of take up lever also causes substantial loss in tenacity and breaking elongation of cotton threads.

• 한국의류학회지
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• 제23권7호
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• pp.998-1006
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• 1999

This study has investigated the relation between the sewing speed and seam breaking strength applied perpendicular to the seam direction. Breaking strength efficiency breaking mode of seams were examined under various sewing conditions using three kinds of sewing threads and four kinds of fabrics. The results obtained are as follows : 1. According to the increase in sewing speed seam strength was remarkably decreased. Seam strength and its loss difference were shown variously as threads and fabrics were mixed. 2. In case of fabrics with higher strength seam strength showed higher. And the seam strength was determined by the loop strength. 3. In case of fabrics with lower strength seam strength and its difference for every sample showed lower. So the strength of fabrics dominated the seam strength than those of threads. 4. In the experiment using various fabrics and sewing threads there was a type of thread appropriate to each fabric. Fabrics and threads with have similar physical properties were shown proper seam efficiency. 5. The breaking mode was different for every sample seam that was tested.

• 헤리티지:역사와 과학
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• 제52권4호
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• pp.170-183
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• 2019

제섬(製纖)이란 원료에서 섬유를 갈라내거나 뽑아내는 일로 식물의 섬유질을 추출하는 과정을 일컫는다. 용어의 정의에서 알 수 있듯이 제섬은 식물 재료에 행해지는 1차 재료 가공 기술로 인피 섬유가 발달한 식물에 행해진다. 대표적인 인피식물로는 모시풀(苧麻), 삼(大麻), 아마(亞麻), 닥나무(楮) 등이 있는데 그 중 삼은 재배의 역사가 길고 분포 지역도 광범위하여 인류의 생활과 문화의 재료로서 매우 보편적이고 일반화된 식물이다. 본 연구는 『오주연문장전산고』에 기술되어 있으나 현재 국내에서 전승되고 있지 않은 자연건조쇄경식 제섬 기술을 재현 실험하여 기술의 이행 가능성과 특징을 살펴보고자 하였다. 문헌에 기록된 방식으로 인피를 채취하고 실험한 결과, 실제로 삼 섬유를 얻을 수 있었다. 삼 줄기에서 속대와 껍질을 분리하기 위한 요인은 변색으로 확인할 수 있는 건조의 정도였으며, 완전히 누렇게 변색된 면적에 한해서 속대와 껍질을 분리할 수 있었다. 일조량과 기온은 건조를 보다 가속시키는 조건이었다. 다만 오랜 시간 동안 노출되기만 한다면 일조량과 기온에 상관없이 인피를 채취하기에 적합한 상태가 되는 것으로 확인되었다. 도리깨질의 물리적 힘을 이용하는 자연건조쇄경식은 함경도 육진 지역 제섬 기술의 핵심 공정으로 여겨진다. 삼의 껍질과 속대는 두드릴수록 분리되었고, 인피는 가늘게 쪼개지며 외피는 벗겨져 실로 채취하기에 적합한 상태가 되었다. 물리적인 힘을 가하여 섬유를 채취하는 방식은 섬유에 잔털이 피는 현상을 유발하는 탓에 인피섬유직물인 삼베나 모시제작에서는 일반적으로 지양되었다. 그러나 함경도 육진의 제섬법은 이 원리를 역이용하여 섬세한 직물을 만드는 방식에 적용시킨 것으로 보인다. 이러한 방식은 현재 우리나라 안동 지역에서 확인되는 증열식 피마 제섬법과는 구분되며, 삼을 방적하여 직물을 제작하는 서양의 사례와 유사함을 알 수 있었다.

• Archives of Plastic Surgery
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• 제36권4호
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• pp.512-515
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• 2009

Purpose: Neurofibromatosis(NF) is an autosomal - dominant systemic disease. Up to fifty percent of patients with NF are reported to have concomitant vascular abnormalities. In the resection of a larger NF, the risk of uncontrolled hemorrhage is much higher due to the difficulty of hemostasis of large vessels within the tumor. We ligated the base of the giant NF with a simple loop - shaped ligation before removal of the giant NF in both buttocks. And then we could successfully reduce the amount of hemorrhage during the operation. Methods: A 46 - year - old female patient presented for giant masses of both gluteal area, which has been growing slowly for the last ten years. Each mass was about $30{\times}20cm$ in size. After designing the elliptical resection margin, we tightened the tumor base by using continuous loop - shaped suture ligation(weaving the thread up and down in a loop - shaped pattern, leaving a space of 2 cm between each loop) with a straight needle and prolene 2 - 0. After skin incision, we proceeded the dissection toward the central and inferior side of the mass obliquely while we avoided breaking large vascular sinuses. We resected the tumor in a wedged - shape. Subcutaneous tissue was sutured layer by layer and skin was closed by vertical mattress and interrupted suture. The loop - shaped ligation of the base was removed and compressive dressing was done with gauzes and elastic bandages. Results: Postoperative complications such as infection, hemorrhage, hematoma, and dehiscense did not occur. Perioperatively the patient was sufficiently transfused with five units of blood and two units of fresh frozen plasma. During the subsequent 1 year follow - up, the functional and cosmetic result was excellent. Conclusion: A continuous loop - shaped suture ligation procedure along the base of the giant NF effectively reduced the amount of hemorrhage during the operation, made dissection and ligation of vessels easily and quickly, and shorten the operating time and postoperative recovery time.