• 한국의류산업학회지
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• 제12권5호
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• pp.676-682
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• 2010

Superior hydrophilic properties will allow varieties of polyester(PET) fiber materials, fabrics and industrial materials a broader scope of use. The purpose of this study was to investigate the effect of water-absorbent softener treatment on the end-use properties and the hand of polyester knitted fabrics. Two different fabrics were knitted for the summer ladies' outwear; PET jersey and PET mesh. Variables were softner treatment and stitch type(jersey and mesh). Mechanical properties of the fabric samples were measured by KES-FB system. From these, primary hand values(HV) were evaluated by the conversion equation (KW-403-KTU) and the total hand value(T.H.V.) was calculated according to the KN-304 Summer. Both water-absorbent softner treatment and stitch types affected mechanical properties and hand values of PET fabrics. Mesh were thicker than single jersey stitch. As they became thicker, tensile, shear, and compressional energy increased. It appeared that coefficient of friction of mesh stitch was larger than that of single jersey stitch. The coefficient of friction and the mean deviation of surface roughness were decreased by softener treatment. After softner treatment KOSHI and SHARI of the both PET jersey and PET mesh decreased. However, FUKURAMI values of PET jersey increased and that of PET mesh decreased. The T.H.V. of the treated PET jersey was lower than that of the untreated one, while the T.H.V. of the treated PET mesh was higher than that of the untreated one. Overall T.H.V. of the single jersey was better than that of the mesh before and after softner treatment.

• 방사선산업학회지
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• 제9권3호
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• pp.143-151
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• 2015

A PET-MR system is particularly useful in diagnosing brain diseases. We have developed a prototype positron emission tomography (PET) system which can be inserted into the bore of a whole-body magnetic resonance imaging (MRI) system that enables us to obtain PET and MRI images simultaneously with a reduced cost. Silicon photomultipliers (SiPM) are appropriated as a PET detector at PET/MR system because detectors have a high gain and are insensitive to magnetic fields. Despite of its improved performance compared to that of PMT-based detectors, there is a problem of the photo-peak channel shift which is due to the increase of the temperature inside the ring detector. This problem will occur decreasing sensitivity of the PET and image distortion. In this paper, I quantitative analyze parameters of the KAIST SiPM depending on temperature by experiments. And I designed cooling methods in consideration of the degradation of sensors for correction of the temperature in the PET gantry. According to this research, we expect that distortive images and degradation of the sensitivity will not be occurred with using the above idea to reduce heat even if the PET system operates for a long time.

• 패션비즈니스
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• 제23권2호
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• pp.1-17
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• 2019

The objective of this study was to investigate electrical conductivity of fabrics from polyester (PET) and Nylon (N) containing polyurethane (PU), with silver paste patterns screen-stenciled in three directions. The PET/PU and N/PU fabrics knitted or woven were uniaxially strain-recovered up to 22.5% in three times when each change in electrical resistance was simultaneously measured. This study established four variables that complexly affected electrical conductivity of these specimens; fabric structures, components, cover factors, and the percolation of silver particles. The woven or knitted fabric structures did not distinctively cause the changes in electrical resistance, however, the woven fabrics with the diagonal patterns showed their relatively high electrical resistance. The PET/PU fabrics with increasing the PET proportion generally presented the opposite propensity to its electrical conductivity. The changes in electric resistance of the PET/PU 85/15 2/1 twill and double plain fabrics instantaneously responded to the rate of elongation. The PET/PU group exhibited a reverse correlation between its cover factor and electrical resistivity. The highest electrical conductivity of the PET/PU 95/5 interlock fabric, with very few fluctuations, was attributed to the deep percolation of the silver particles that bridged the gaps between one loop and another. On the other hand, the occurrence of the silver cracks along with the elongated direction led to the immeasurably high change in electrical resistance as the strain increased.

• 한국의류산업학회지
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• 제11권3호
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• pp.474-480
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• 2009

The purpose of this study is to prepare the hardness 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 were composed with a regular PET core and low melting PET sheath. The thermal bonding of PET fabric was carried out in pin tenter from 120 to $195^{\circ}C$ temperature range for 60 seconds. In this study, we investigated the physical properties and melting behavior of PET fiber and the effect of the temperature of the pin tenter on the thermal bonding, mechanical properties. Melting peak of warp showed the thermal behavior of general PET fiber. However, melting peak of weft fiber(bicomponent fiber) showed the double melting peak. The thermal bonding of the PET fabric formed at about temperature of lower melting peak. The optimum thermal bonding conditions for PET fabrics was applied at $190{\sim}195^{\circ}C$ for 60seconds by pin tenter. On the other hand, the tensile strength of the PET fabric decreased with an increasing temperature of thermal bonding.

• 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.

• 패션비즈니스
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• 제17권5호
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• pp.120-137
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• 2013

Nowadays, due to the increase of the aging population and the decreased size of the traditional nuclear family, pet dogs are considered to be important member of the family. The pet industry has been growing every year; subsequently, is essential to develop practical patterns and designs which are appropriate for the structure and movement of pet dogs. However, studies for developing a new form of pet dog's wear patterns and designs are limited. This study develops an all-in-one pattern which is based on pet dog's size, designs pet dog's wear items based on all-in-one patterns, and provides support to the manufacture of pet dog's wear. The results are as follow: 1) An analysis for the categories and design characteristics of all-in-one pet dog's wear according to the research from the online pet dog's wear shopping sites is provided. Eight categories are classified as follows: rompers, body suit, coveralls, training suit, special clothing, overalls, rain coat, and hanbok. 2) The production of all-in-one pet dog's wear basic pattern based on the basic bodice pattern from the prior studies and the manufacturer's patterns are being displayed. 3) Developments of the patterns and designs for eight all-in-one clothing consider the design characteristics and the situations. 4) Developments of the previous eight items illustrate the results of this research.

• 한국산업융합학회 논문집
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• 제10권4호
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• pp.285-289
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• 2007

This study presents the preform injection molding of the injection stretch-blow molding process for PET bottles. The numerical analysis of the injection molding of a preform is considered in this paper using CAE with a view to minimize the warpage. In order to determine the design parameters and processing conditions in injection molding, it is very important to establish the numerical model with physical phenomenon. In this study, a three dimensional model has been introduced for the purpose and flow simulations of filling, post-filling and cooling process are carried out. The simulations resulted in the warpage in good agreement with the measurements. Also, from the result of numerical analysis, we appropriate -ly predicted the warpage, deformation and thickness distribution along the preform wall.

• 한국임상수의학회지
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• 제29권1호
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• pp.49-57
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• 2012

Success of any business solely is dependant on how to satisfy clients in healthcare-related industry. In the short history of Korea pet-care industry, there were not many guidelines on client satisfaction management of companion animal hospitals. The studies on many pet healthcare facilities were conducted based on their cost-benefits and the advantages of medical operation within special features of the traditional hospital management system. However the companion animal hospitals recently need to improve the service quality and client closed communication in keen competition on pet healthcare market. This study explores client satisfaction management could be the new issue of the veterinary hospital business. And it finally suggests of the critical factors affecting successful client satisfaction management of companion animal hospital based on the eight case studies.

• 농업과학연구
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• 제49권3호
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• pp.607-617
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• 2022

As the number of households raising pets increases, the pet food industry is also growing. Since pets cannot express their intention explicitly, it appears that the owner's perception mainly affects the selection of products related to pets. In this study, consumers were categorized based on their interest in food choices and the factors influencing their interest in pet food were empirically analyzed. For the analysis, a cluster analysis, factor analysis, and Tobit analysis were conducted using consumer survey data for raising companion animals. The major findings of the study were as follows. As a result of the factor analysis and cluster analysis using questions for consumers' food consumption choices, consumer types were classified into high-interest, low-interest, and practical-seeking types. The degree of interest in pet food was high in the order of high-interest, practical-seeking, and low-interest type. Demographic characteristics such as gender, education, and household type correlate with differences in the degree of interest in pet food, and the food selection criteria of consumers also affect the degree of interest in pet food. These results show that consumers who are more interested in their food choices are more interested in pet food, and this will make possible to know pet owner's purchasing behavior for pet food.

• 한국인터넷방송통신학회논문지
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• 제23권1호
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• pp.101-107
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• 2023

본 연구는 메타버스 반려견 패션쇼가 지닐 컨셉과 기능을 연구, 개발하는 데 그 목적이 있다. 현재 반려동물 관련 산업이 빠르게 성장하면서 자연스럽게 반려동물 패션산업도 성장하고 있다. 하지만 빠르게 성장하는 패션산업과는 다르게 견주들의 니즈를 충족시키기엔 부족했다. 따라서 본 연구에서는 기존 반려동물 의류 구매 시 발생하는 문제점들은 메타버스를 통해 보완하여 메타버스 반려견 패션쇼를 개발하고자 하였다. 연구 방법으로는 첫째, 실제 반려동물 관련 산업에 대한 상승세와 메타버스 및 가상 패션쇼의 사회적 동향 조사를 실시하였다. 둘째, 사용자 요구분석을 통해 기존 반려견 의류 구매 특성을 살펴보고 견주의 니즈를 도출하였다. 셋째, 이에 적합한 콘텐츠의 형태를 설정하고 메타버스라는 새로운 콘텐츠 소비환경을 분석하여 도출하였다. 마지막으로 견주들에게 만족감을 줄 수 있도록 기능을 도출하여 개발하였다. 향후에는 이를 토대로 실제 반려견 의류 사업과 연결, 명확한 결제 시스템을 연구할 필요가 있다.