Applied Chemistry for Engineering (공업화학)

The Korean Society of Industrial and Engineering Chemistry (한국공업화학회)
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Life Cycle Assessment and Improvement Assessment for Manufacturing Process of Corrugated Package

골판지 포장재의 생산공정에 대한 LCA 수행 및 친환경 공정개선

  • Jo, Hyun Jung (Department of Environmental Engineering, Inha University) ;
  • Hwang, Yong Woo (Department of Environmental Engineering, Inha University) ;
  • Park, Kwang Ho (Department of Environmental Engineering, Inha University) ;
  • Jo, Byoung Muk (Department of Paper Science and Engineering, Kangwon National University) ;
  • Kim, Hyoung Jin (Department of Forest Products, Kookmin University)
  • Received : 2005.01.25
  • Accepted : 2005.07.11
  • Published : 2005.10.10
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Abstract

In this study, life cycle assessment (LCA) on one of corrugated cardboard box as functional unit was carried out. System boundary of this study divided according to raw material acquisition, corrugated cardboard manufacture and corrugated cardboard box manufacture stage. And environmental impacts are evaluated on each stage and sub-process. The impact categories are classified into eight categories of abiotic resource depletion, global warming stratospheric ozone depletion, photochemical oxidant creation, air acidification, eutrophication, ecotoxicity and human toxicity. From the results, it is found that environment impacts at raw material acquisition stage is the highest as about 92% of whole stage due to liner board manufacture stage. The highest environmental impacts at sub-process of corrugated cardboard and box manufacture stage is a single facer and D/W backer process that included as main process in corrugated cardboard manufacture, and is caused by used energies like electricity, B-C oil, and etc. And then diagnosis for clean production process system of package is carried out. Through diagnosis, on loss rate is reduced and inner pressure intensity of box is improved. After improvement, environmental impact was decreased about 3.8% compared with before improvement.

본 연구에서는 골판지포장재에 대하여 LCA를 수행하고 그 결과를 바탕으로 생산공정의 환경성 개선을 수행하였다. 연구범위는 원료취득단계에서부터 원단제조단계, 상자제조단계까지로 구분하여 각 단계 및 세부공정별로 LCA에 의한 환경영향을 평가하였다. 영향범주는 자원고갈, 지구온난화, 오존층고갈, 광화학산화물생성, 산성화, 부영양화, 생태독성, 인간독성의 8가지 범주로 구분하여 평가하였다. 평가결과, 전체 환경영향 중 원료취득단계에서 발생하는 영향이 약 92%로 가장 높게 차지하는 것으로 나타났으며 라이너지 제조공정에서 가장 큰 환경영향이 있는 것으로 나타났다. 원단제조단계와 상자제조단계의 공정에서 발생하는 환경영향은 원단제조단계의 주 공정인 single facer 및 D/W backer 공정에서 가장 높은 영향을 가지는 것으로 나타났다. 이와 같이 환경영향이 나타나는 주요 원인은 전력, 중유 등의 에너지인 것으로 나타났다. 또한, 포장재의 청정생산공정구축을 위하여 생산공정에 대한 진단을 수행하였다. 진단을 통하여 손모율 저감과 상자의 내압강도에 대한 개선효과를 평가하였으며, 개선 후 환경영향은 개선 전보다 약 3.8% 환경영향이 저감된 것으로 나타났다.

Keywords

Acknowledgement

Supported by : 산업자원부

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