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Development of Recycled Paper Properties using In-Situ Process  

Lee, Jong-Kyu (Korea Institute of Geoscience and Mineral Resource(KIGAM))
Yoo, Kwang-Suk (Korea Institute of Geoscience and Mineral Resource(KIGAM))
Nam, Seong-Yong (Korea Institute of Geoscience and Mineral Resource(KIGAM))
Ah, Ji-Whan (Korea Institute of Geoscience and Mineral Resource(KIGAM))
Publication Information
Resources Recycling / v.19, no.3, 2010 , pp. 62-70 More about this Journal
Abstract
As the demand for paper continues to grow and the importance of recycled paper, white ledgar(WL) and old newspaper pulp(ONP), continuously increase. In addition, usage of recycled paper is essential in terms of forest conservation and environmental protection issues. However, optical and mechanical properties of recycled paper have some drawbacks than regular paper's properties that is indispensable. In order to complement these problems of recycled paper, precipitated calcium carbonate (PCC) was synthesized by the In-situ process with a recycled pulp. Depending on the size of PCC is divided into 2 types, $0.01{\mu}m{\sim}0.09{\mu}m$ colloid type ultra-fine particle and $0.1{\mu}m{\sim}0.9{\mu}m$ cubic type particles. In this study, we analyze how the different shape and size of precipitated calcium carbonate affects in the optical and mechanical properties of the recycled paper used as a filler. Furthermore, we mixed with chemical pulp for overcome reduce of mechanical properties, without using other chemicals, when we use PCC as a filler. The results has the possibility to meet in GR excellent recycling certification mark, standard was proposed.
Keywords
In-situ process; precipitated calcium carbonate; recycled paper; GR standard;
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