미선별 골판지 자원의 압축 베일 내 종이팩 혼입률 및 재활용 물질 흐름 분석 = Analysis of Mixing Ratio of Used Beverage Cartons in Unsorted KOCC and Recycled Material Flow

다국어 초록 (Multilingual Abstract)

This study analyzed the mixing ratio of Gable top cartons and Aseptic cartons in unsorted KOCC bales received by a corrugated container base paper mill and material flow on the recycling process. As a result, it was found that 0.47% of Gable top cartons and 0.23% of Aseptic cartons were mixed in unsorted KOCC bales, and a total of 0.70% of used beverage cartons were mixed in the recycling process. As of 2021, approximately 39,000 metric tons of used beverage cartons were included in unsorted KOCC and delivered to paper mill, which is approximately 54% of beverage cartons output. In addition, while the Gable top cartons were rejected without disintegration after pulping, the paper layer of the Aseptic cartons were disintegrated, and only the polyethylene/aluminum layers(Poly-Al) were rejected. It is estimated that 70% of the weight of Aseptic cartons, specially the paper layers, entering companies for corrugated paper are recycled as raw materials for producing corrugated container base paper. This is approximately 44 ~ 55% of the total Aseptic cartons output, and the total quantity of paper layer is estimated to be approximately 7,000 ~ 8,000 metric tons/year.