• 한국포장학회지
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• 제7권2호
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• pp.12-18
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• 2001

Increasing use of plastics in food packaging materials has led to the issue of food-plastic packaging materials mutual interactions. Rapid development of new microwavable ready-to-meal products requires suitable plastic packaging materials for safe heating with the contained food. However, data is still required to diminish consumers' safety concern about ready to meal packaging materials. Amounts and patterns of extracted materials from the ready-to-meal packaging materials of Korea and Japan by heat treatments ($120^{\circ}C$ for 30 min.) was investigated and compared by using Gas chromatography. Total peak number of extracted materials from Korea packaging materials was six while that of extracted materials from Japan's was only two. Moreover, the extracted amounts of packaging materials from Korea company was much higher than those of Japan's. Additional research is needed to justify the reason why extracted materials from packaging materials from Korea be much more occurred, and how the amounts from Korea packaging materials can be reduced.

• 한국포장학회지
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• 제8권2호
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• pp.39-43
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• 2002

Increasing use of plastics in food packaging materials has led to the issue of food-plastic packaging materials's mutual interactions. Although the plastic packaging materials are generally considered as inert, migration and sorption of fatty materials are some of the problems associated with their use. So, this work investigated the compatibility of three structurally different polymers, polypropylene (PP), polyethyleneterephthalate (PET) and ethylene vinyl alcohol copolymer (EVOH) with some structurally different food fats. The main goal was to study the sorption of food fats by the plastic films and to see what extent mechanical properties of the plastic films was affected by plasticization effect due to sorption of fatty materials. PP, PET, and EVOH films was immersed in pure triglycerides, and then extracted with hexane and analyzed for the amounts of fat migrated. The sorbed films were also investigated for change in mechanical properties. Result showed that structural factor of the films and fatty materials plays important role in th migration process. The fat with the simplest structure are migrated more easily that the fat with more complex structure. However, structural effect of migration was varied according to degree of crystallinity and density of plastic films. In addition to that, polarity of plastic film was affected migration of fatty materials significantly. Additional research is needed to justify the reason why migration of fatty materials into the films was affected by polarity and structural integrity.

• 한국포장학회지
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• 제10권1호
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• pp.1-6
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• 2004

Amount of residual ink solvent on the packaging materials from Korea, Japan and Europe was measured and compared. The amount of packaging materials from Korea was much higher than that of Japan and Europe. To reduce the residual amounts of ink solvent, aging condition of printed packaging materials including aging time and temperature was modified and evaluated. Aging with high temperature and short time ($60^{\circ}C$ and 24 hours) was more effective for reduction of residual amount of ink solvent than that with low temperature and long time. To find out change of reduction pattern of residual amount of solvent according to plastic packaging material, several monolayer and multilayer packaging materials were selected. Among the monolayer packaging materials, the amount of EVOH and PET was lower than that of polyolefin plastic film including PE and PP. PP/EVOH/PET among the selected multilayer film showed the lowest amount of residual ink solvent on food packaging materials. Result of this research revealed that the residual amount of ink solvent can be reduced by proper selection of aging condition with and by appropriate application of mutilayer plastic film.

• 한국포장학회지
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• 제22권3호
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• pp.103-106
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• 2016

태국의 플라스틱 소비는 포장분야 49%, 직물 15%, 건설 11%, 전기전자가 10% 순으로 나타났다. 종사자는 106천명이며 공장생산 용량대비 실제 생산은 85%이고 식품포장용 플라스틱수지 수요는 월간 135천톤에 달한다. 업종별 제조사는 필름가공업체가 503개 공장으로 전체의 39%를 점하며 인젝션 몰딩 사가 231개로 18%, 블로우 몰딩 사가 216개사로 17% 순으로 나타났다. 주요 수지들의 생산은 PP는 총 1,950천톤을 생산하였으며, LDPE는 685천톤을 LLDPE는 1,150천톤을 생산하였고, HDPE는 1,920천톤을 생산한 것으로 나타났다. 플라스틱 수입은 16,668백만 바트였고 수출은 33,778백만 바트로 수출액이 2배 이상 높은 것으로 나타났다.

• 한국포장학회지
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• 제11권2호
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• pp.109-114
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• 2005

This paper introduces the current status of total overseas packaging industries. The total market of the world packaging industry reached over 500 billion dollars in 2002. The top nations for the packaging industry were U.S. at about 27 percent, the countries of Western Europe at about 27%, Japan at about 14%. In terms of packaging materials, the overall market rate for paper, plastics, and metal parts in world packaging industry was 84%. Also, the market rate of glass, packaging machine, and others was only 5-6%. Among EU nations, Germany showed largest packaging consumption of 23 percent in 2000, and consumed about 17,125,814 ton of packaging materials yearly. For paper and paperboard cartons, the percentage used for the packaging consumption was about 39.4%. The consumption rate of plastic and glass packaging was approximately 14.6% and 23.7% respectively. For metal packaging the consumption rate was about 5.9%. In Japan, the production rate of packaging materials was decreased slowly at paper, metal, glass, and wood areas, but plastic packaging showed a constant rate of growth. In China, total production of packaging industry amounted to about 33.7 billion in 2003. The paper packaging in china was a remarkable production rate of 32%. The production rate of plastic and printing packaging was 28% and 20% respectively. The rate of packaging industry for printing in China was much higher than that in other countries.

• 한국포장학회지
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• 제8권2호
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• pp.44-48
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• 2002

플라스틱 포장재는 소비자들이 생각하는 것보다 환경에 미치는 영향이 적으나 플라스틱 제조업체들에게는 플라스틱 폐기물을 위한 재활용시장을 어떻게 활용화하는가는 매우 중요하다. 이것을 위하여 정부는 충분한 규모의 재활용시장을 키워나갈 수 있도록 MRF 등 각종 설비를 지원해야 하며 성공적인 재활용정책을 개발해야 한다. 경제적이고 다양한 재활용기술이 소개되고 있지만 이것은 반드시 잘 정비된 재활용정책이 우선되어야 성공할 수 있다.

• 한국포장학회지
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• 제12권2호
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• pp.91-96
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• 2006

The widespread use of packaging materials on food packages sometimes causes off-flavor and deterioration in the food by migration of packaging materials which consist of mainly plastic materials and printing ink solvents. Even though migration of the residual packaging materials does not generally cause safety problems in the contained food, it certainly can generate off-flavor and finally deteriorate quality of the finished product. In highly consumer-oriented markets, quality of the finished product is gaining more importance economically, so profound and thorough study about migration into food to maintain the fine quality of the end product becomes an importance issue. Studies have been conducted about migration of various packaging materials and the chemical reactions between the food components and the materials used for food packaging (Brody, 1989; Mcneal and Breder, 1987; Lawson, G and Lawson, C, 1996). Several of these studies have measured partition coefficient values (Kp) between packaging materials and various food samples and involved finding factors that affected the partitioning behavior of packaging materials into the contained food. However, to enable prediction of partitioning, data are still needed on the relation of packaging material chemical structure and properties to partitioning behavior, and on the partitioning behavior of various food ingredients and the total food compositions.

• 한국포장학회지
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• 제10권1호
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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.

• 한국포장학회지
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• 제8권2호
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• pp.49-59
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• 2002

플라스틱 포장재의 주요 기능은 식품을 수송, 보관과정에서 안전하게 보존하는 것이다. 식품과 플라스틱 포장재간의 반응은 식품의 품질과 안전성 문제에 있어서 상당한 이슈가 되고 있는데 이는 주로 플라스틱에 남아있는 잔류용제, 단량체, 첨가물 등이 식품으로 전이되는 문제들이다. 플라스틱 포장재에 항산화제를 첨가하는 것은 필름의 열화는 물론 포장된 식품, 특히 유지가 많은 제품의 산화를 막을 수 있다. 현재 BHT와 같은 항산화제를 플라스틱 포장재에 적용하는 것이 상업화되어 제품의 유통기간을 연장시키는 방법으로 사용되고 있다. Alpha tocopherol은 가장 중요한 자유기 제거제의 하나로 생물 시스템에는 잘 알려져 있는데 이것을 포장재에 사용함으로써 생산자와 소비자 모두 매우 긍정적인 반응을 보이고 있다. Alpha tocopherol은 폴리올레핀계 레진에 적용되어 BHT를 대체하고 있다. 이 연구는 포장재와 제품간의 증발-흡착 메카니즘을 이용한 항산화제의 효과와 그 적용, 그리고 이러한 메카니즘을 예측할 수 있는 분석기법을 설명하였다.

• 한국포장학회지
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• 제26권1호
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• pp.25-31
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• 2020

Recently, applications of biomass-based plastics have increased according to the eco-friendly policy of the reduction of carbon dioxide emissions in domestic and foreign government. In this study, a paper plastic composite was produced by compounding polypropylene and micronized paper powder that was prepared using dry pulverization technology. Subsequently, the specimen of paper plastic was verified with mechanical properties, formability and product safety test to confirm the suitable packaging materials for food packaging. Paper plastics showed slightly lower mechanical properties than currently commercialized PP composites. However, paper plastics are valuable materials as environmentally friendly carbon-reducing material because of high biocarbon content, light weight features and applicability of existing manufacturing machines or system.