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고지재생연구(제3보)-부상부유 및 니딩처리에 의한 라이너지의 강도 및 광학적 성질 개선-
서형일,류정용,신종호,송봉근,오세균 한국펄프종이공학회 1999 펄프.종이기술 Vol.31 No.1
KOCC pulp was fractionated by air froth flotation and the resultant accept was further treated with kneading. The study on the effect of this combination process revealed that the flotation and the successive kneading were found to be effective in improving strength and drainage properties as well optical cleanliness of testliner based on 100% KOCC.
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고지재생연구(제6보) -골판지 고지의 탈수성에 미치는 전분의 영향과 아밀라아제의 적용-
서형일,류정용,신종호,송봉근,오세균 한국펄프종이공학회 1999 펄프.종이기술 Vol.31 No.2
A great difference in drainage time was observed from the recycled stocks between corrugated container board and its component papers, liner and medium paper. It could be assumed that the different drainage property should be caused from a starch adhesive present in the corrugated board. Thus, three types of starch such as dried Stein-Hall adhesive, cooked starch solution, and its dried film were added to linerboard stock in order to investigate the mechanism of drainage reduction. The water-swollen starch particles derived from Stein-Hall adhesive were drastically deteriorated the drainage time, even though the amount of starch is very small (2% or below). The drainage time of OCC was improved by 25% when amylase was used a new biological treatment. The results from the lab and mill test showed that the starch-degradable enzymatic treatment improves the drainage property as well as the reduction of calcium hardness.
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