• KOREAN JOURNAL OF PACKAGING SCIENCE & TECHNOLOGY
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• v.24 no.3
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• pp.141-148
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• 2018

Photo-oxidation is one of the main causes of food deterioration of great variety of foods, such as dairy products, nuts, meat products, and wine. It causes a loss of both nutritional value and sensorial quality of products and may even leads to the formation of toxic compounds. Active packaging for food and beverages has been investigated and developed with embedding light absorbers or blocking materials into the plastics. In recent years, several novel light barrier materials have been proposed as an alternative option for different applications. This article reviews the up-to-date technology in light absorber and blocking material with special emphasis on chemical compound and mechanism. Inorganic, organic, hybrid organic-inorganic, and natural light absorbers were scoped. The challenges and future perspectives of light barrier materials are also discussed.

• KOREAN JOURNAL OF PACKAGING SCIENCE & TECHNOLOGY
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• v.10 no.1
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• pp.63-68
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• 2004

The regulations for migration amounts in USA, EU and Korea are investigated to compare the actual overall and specific migration date from plastic food packaging materials. Among the packaging materials regulated in above countries, printing ink solvents on packaging materials is used very widely and sometimes cause off-flavor in the food by migration of residual solvents. Even though migration of the residual solvents dose not generally cause safety problems in the contained food, it certainly can generate off-flavor and finally deteriorate quality of the finished product. Therefore regulation and development of analytical method for amount of residual ink solvents are very important issue in food industry. The headspace analytical method and tenax method for residual ink solvent on food packaging materials were evaluated from the accuracy, precise, swiftness and convenience of viewpoint. Headspace analytical method was selected and recommended for using in food industry field.

• KOREAN JOURNAL OF PACKAGING SCIENCE & TECHNOLOGY
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• v.15 no.1
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• pp.1-6
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• 2009

The impact absorption materials made of synthetic organic chemical product like Expanded Polystyrene(EPS), Expanded Polyethylene(EPE), Expanded Polyurethane(EPU), etc. have been used with general packaging material until the present. But nowadays, the use of these materials is intended to be decreased and to be recycled in connection with environmental pollution. In addition, it has been tried to substitute these materials with non-pollution materials(natural materials) like pulp mould, paper protectors, etc. At the same time, it is required to evaluate and analyze these cushioning materials for cushioning properties based on impact and vibration, in order to make an efficiency on the overall packaging system because they are generally being used by a random choice regardless of the properties of contents and cushioning materials. Therefore, this study provides analyzed data on cushioning properties of various cushioning materials against impact and vibration, and is intended to provide more efficient model for packaging system by minimizing their using amount through choosing an optimal cushioning material as well as intended to lead to the use of nonpollution materials in case these cushioning materials have same cushioning properties.

• Proceedings of the International Microelectronics And Packaging Society Conference
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• 2002.05a
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• pp.1-6
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• 2002

It is very important to foresee the main stream of technology development in the future. Packaging related manufacturers in equipment and materials focused their strength on products sharing big portion of world markets. As a result, domestic supply sources for packaging materials and equipment has been increased, but the manufacturer's capital and manpower is so limited to develop high technology machinery and high functional materials. The current status of packaging infrastructures in Korea is reviewed statistically. The hot issues in packaging arena are now in wafer level packaging, 3D packaging, and ultra-thin packaging. In addition, the recent advancement in microelectronics packaging technology is also covered.

• Korean journal of food and cookery science
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• v.18 no.5
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• pp.522-528
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• 2002

The effects of packaging materials, Ny/PE, PET/PE/Al, PET/PE/LDPE/CPP, and PET/Al/Ny/CPP, and packaging methods, atmospheric and vacuum packaging on physicochemical properties of onion Kimchi and rosemary-onion Kimchi were investigated. The maximun swelling days of packaging materials were increased more in rosemary-onion Kimchi than in onion kimchi, and they were in the order of PET/Al/Ny/CPP, PET/PE/Al, PET/PE/LDPE/CPP, and Ny/PE. The pH and reducing sugar contents of onion Kimchi and rosemary-onion Kimchi were decreased during storage. and those of lion Kimchi and rosemary-onion Kimchi packaged in PET/Al/Ny/CPP were higher than those in different packaging materials. Titratible acidity and vitamin C content of rosemary-onion Kimchi were lower than those of onion Kimchi, but there were no differences in the L and b values between two groups.

• KOREAN JOURNAL OF PACKAGING SCIENCE & TECHNOLOGY
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• v.6 no.1
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• pp.12-18
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• 2000

If optimum design technique is applied in the design of packaging container for bulk materials, merits on the side of not only economic and compression performance but distribution efficiency are expected. In this study, on the ground of the optimum models for required board area and compression strength performance, optimum design program having faculties of outward and inward optimum design and information design was developed. This program was composed of input module, output module, database and management module, and calculation module. Though the packaging specifications ars same, requied board area, board composition and cost of container were greatly different according to exterior packaging conditions. Also, about 12% in weight of container was lighter, and about $13{\sim}17%$ in cost of container was reduced when the program was applied for 2 kinds of bulk materials.

• KOREAN JOURNAL OF PACKAGING SCIENCE & TECHNOLOGY
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• v.16 no.1
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• pp.19-25
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• 2010

It is becoming increasingly important to utilize alternative raw materials for plastic industries other than petrochemical-based plastics. Cellulose derivatives were the bases of the original synthetic plastics. Cellulose and its derivatives, especially the widely used cellulose acetate (CA), constitute one of the main classes of raw materials for production on artificial fibers, films, plastics etc. CA is one of the well known polymers produced from naturally available plant substance. Many researches have focused on the isolation of cellulose from the plant cells to use them as cellulose derivatives and composite materials. Chemical and mechanical treatments provide changes on the molecular structures influencing the fundamental properties of these naturally abundant polymer. The aim of this review article is to review biodegradation, synthesis, formation, and utilization of cellulose esters, especially di-acetate, used in packaging related researches.

• KOREAN JOURNAL OF PACKAGING SCIENCE & TECHNOLOGY
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• v.22 no.2
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• pp.27-32
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• 2016

In this experiment, alcohol and blanching treatments were used for food packaging materials, quality of powder yam and sliced yams (5 mm size) were compared by alcohol concentration and time for measuring change of color, weight, moisture content saccharinity and decomposition. 5% and 10% alcohol were used to alcohol treatment for 5, 10 seconds each. Packaging materials were used OPP($30{\mu}m$), PET($25{\mu}m$), ON($25{\mu}m$) and all materials heat sealable were coated. Quality of powder yam were not changed during storage at low temperature however were changed during storage at room temperature after 5 days. In conclusion, powder yam were needed packaging materials with high water barrier property from moisture, sliced yams were high quality when packaged by ON and stored at low temperature. Therefore, using packaging materials with low oxygen permeability were expected to reduced quality degradation about browning of powder yam and sliced yams.

• KOREAN JOURNAL OF PACKAGING SCIENCE & TECHNOLOGY
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• v.27 no.1
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• pp.17-23
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• 2021

Recent studies on recyclable materials in the packaging have an increased attention due to the eco-friendly policies of reducing carbon dioxide emissions in worldwide. Roasted coffee beans mostly packed in multi-layered films and papers according to their expiration date. To satisfy both recyclability and barrier properties, researches have been continued on paper-based packaging materials to enhance their properties. In this study, packaging materials for coffee beans are developed by laminating bioplastic films on papers. The tests of packaging materials were performed with mechanical properties, gas and water vaper permeability, recyclability and storage quality for coffee beans. Compared to other samples, the paper/bioplastics-based coffee package composed of starch coated papers and two bioplastics showed the lowest barrier properties, comparable mechanical strength and ability to maintain the quality of roasted coffee beans. Thus, it could be a good alternative for multi-layered packages for roasted coffee beans.

• The monthly packaging world
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• s.306
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• pp.55-62
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• 2018