• Fibers and Polymers
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• v.7 no.3
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• pp.305-309
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• 2006

This research studies the factors which influence the tensile strength of tire cords. Five yam samples are made by changing the spinning conditions and viscosity to get various physical properties. Different twisting methods are introduced and the yams are twisted under different processing conditions for each twisting process. With the experimental results, various analyses are performed to find the important factors in retaining strength after the twisting process. SEM and optical microscopic photographs are taken along with some measurements to assist the analysis.

• Proceedings of the Korean Fiber Society Conference
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• 1987.06a
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• pp.39-39
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• 1987

• Proceedings of the Korean Fiber Society Conference
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• 2002.04a
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• pp.239-242
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• 2002

코드사 재봉기는 커튼, 침장류와 같은 제품에 입체구조의 무의를 발현시키기 위하여 30,000 ~50,000d 굵기의 실을 사용하여 직물표면에 입체 무의를 만드는 특수 재봉기이다. 이 재봉기는 작업자가 방향 전환 핸들을 이용하여 무의를 직접 만들어야 하는 수동방식이기 때문에 숙련공의 의존도가 높다. 그래서 숙련공의 의존도를 낮추고 제품의 질, 균일성, 생산성을 향상시키기 위하여 자동화가 절실히 요구되어 왔다[1]. (중략)

• Textile Coloration and Finishing
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• v.34 no.2
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• pp.109-116
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• 2022

Tire codes are made of materials such as hemp, cotton, rayon, nylon, steel, polyester, glass, and aramid are fiber reinforcement materials that go inside rubber to increase durability, driveability, and stability of vehicle tires. The reinforcement of the tire cord may construct a composite material using tires such as automobiles, trucks, aircraft, bicycles, and fibrous materials such as electric belts and hoses as reinforcement materials. Therefore, it is essential to ensure that the adhesive force between the rubber and the reinforced fiber exhibits the desired physical properties in the rubber composite material made of a rubber matrix with reinforced fibers. This study is a study on the heat treatment conditions for improving the adhesion strength of the tire cord and the reinforced fiber for tires. The core technology of the drying process is a uniform drying technology, which has a great influence on the quality of the reinforcement. Therefore, the uniform airflow distribution is determined by the geometry and operating conditions of the dryer. Therefore, this study carried out a numerical analysis of the shape of a drying nozzle for improving the performance of hot air drying in a dryer used for drying the coated reinforced fibers. In addition, the flow characteristics were examined through numerical analysis of the study on the change in the shape of the chamber affecting drying.

• Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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• 2012.04a
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• pp.82-87
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• 2012

Research and development of the spinning system which become bigger, faster and more detailed has been making progress continuously due to the increasing use of yarn which is considered as raw material to make industrial goods such as tire cord, air bag, filter, seatbelt and fiber-optic cable along with a remarkable growth of industry. In this paper, the desirable procedure and design requirements concerning a method of vibration reduction for "Godet Roller" considered as the main source of high vibration in the spinning system were suggested, and then verified those by analysis and actual test.

• Composites Research
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• v.15 no.4
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• pp.17-22
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• 2002

Small diameter composite helical springs (CS) are developed using a hot plated mold for reinforcement of common optical fiber jumper cord (OJC). The outer diameters of the springs are about 2 ~ 3mm. These springs are inserted into the OJC to protect the damage of an optical fiber from the sudden lateral load. Two types of CS, Yarn type (Y-type) and Band type (B-type), are manufactured to compare the effectiveness for the damage protection. The experimental works were conducted to check the effect of the CS covered around OJC on the mechanical and optical properties. Experimental observations show a considerable effect on the flexural resistance, hence slowing down the deterioration of the optical power by the internal damage of the fiber. Obtained main results are as follows: (1) Y-type CS has better protection abilities to lateral loading than B-types. (2) Compared with bare OJC, CS-OJC has less power loss under the loading. (3) OJC covered with the composite coil spring has a possibility for a practical usage with full fruits.

• Journal of Fashion Business
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• v.5 no.1
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• pp.131-144
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• 2001

The purpose of this study is to examine the type of stitch and designs of knitwears using handcraft ornament techniques. This paper will also go on to develop and merchandize high value generated by design development. Knit is largely divided into weft knit stitch and warp knit stitch which are respectively woven by weft knitting machine and warp knitting machine. For clothing, circular knit and flat knit are frequently used while plain stitch, rib stitch and purl stitch are perceived as the basic stitches. Denbigh stitch, cord stitch, atlas stitch, which belong to tricot stitch, are the basic of warp knit stitch. There are also numerous fancy fabrics adapting the previously mentioned stitches and these are made into solid pattern and yarn dyed pattern. The handcraft ornament techniques in knitwears design are embroidery, beads, sequin, stone, printing, applique and fringe, etc. By applying these techniques thus creative expression, which cannot be expressed in other fashion items, is feasible. The women's knitwears are tries by mixed and various techniques, develope to high value knitwears, escaping from simple and practical items.

• Conservation Science in Museum
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• v.3
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• pp.29-36
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• 2001

The hat excavated from the tomb of Hojeo-myon Wonsung-gun in Kangwon province was dry-cleaned and restored. The hat was made of wool felt and decorated with several strands of silk cord. It was very dirty and moth-eaten. After getting rid of the particle soils on a surface with painting brush, the hat was dry-cleaned using perchloroethylene applying the minimum force, and blotting paper was used for drying. During cleaning, it was supported by the stainless steel net. The weight loss was 7.94% after cleaning. The soils sticked on the hat was removed clearly. The texture of the hat became softer after cleaning. Color difference(∆E) was 2.57, which is a noticeable change. The color became clear and changed to the red and yellow range. After dry-cleaning, the hat was repaired. Dislocated silk cords were fixed to the right place by stitching with silk yarn. To keep the shape of the hat, it should be supported by a hat-shaped stiff net during exibition and storing.