• Title/Summary/Keyword: plastic

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Studies on the application of high-gloss plastic pigment for paper coating (I) - Effect of the type of plastic pigment on the quality of coated paper - (종이도공용 고광택 유기안료의 적용에 관한 연구(제1보) -유기안료의 종류가 도공지 품질에 미치는 영향-)

  • 박규재;정경모;황석우;이용규
    • Proceedings of the Korea Technical Association of the Pulp and Paper Industry Conference
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    • 1999.04a
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    • pp.1-6
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    • 1999

  • A study was made to determine the effect of plastic pigment on the coating structure and printability of coated paper. Three basic plastic pigments were investigated such as solid-bead type of plastic pigment, binder type of plastic pigment and hollow type of plastic pigment. In the systems investigated, it was observed that particle shape and structure of plastic pigment had influenced on the rheology of coating color, the state of packing, and the properties of coated paper. The materials investigated were restricted to plastic pigments commonly uesd in paper coating formualtion. Inorganic pigments used in this research were kaolin clay which is platelets and calcium carbonate which is rhombic. Three kinds of plastic pigments were blended in the color made up with two inorganic pigments, respectively. The combination of pigments were carried out (1) to determined the effect of paticle structure of plastic pigment on the state of dispersion of coating color, (2) to observe the effect of temperature of calender on the property of coated paper prepared with plastic pigment. The data indicated that binder and hollow type of plastic pigment had the best results on improving the properties of coated paper such as paper gloss, opacity and air permeability ect. and solid-bead type of plastic pigment in the next place.

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Strategies for Response and Mitigation of Marine Environmental Damage Caused by Plastic Debris

  • Lee, Jungsub
    • Journal of the Korean Society of Marine Environment & Safety
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    • v.27 no.3
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    • pp.439-446
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    • 2021

  • Environmental damage caused by marine plastic debris occurs and has become a major contributor to marine pollution. This study analyzed the current state of marine plastic debris pollution and proposed essential strategies to reduce damage. To assess the current state of pollution arising from marine plastic debris, this study investigated the properties of plastic debris, reviewed case studies of ecological impacts, and examined the inflow and distribution of marine plastic debris. The results of this study indicate that the major deleterious effects of marine plastics are entanglement and ingestion. In addition, the amount of plastic waste entering the sea was estimated to be 230 Mt in 2015 and may increase to 554 Mt in 2050. In this study, three key strategies were proposed to reduce damage and preserve the ecosystem, including: 1) removing plastic debris in the marine environment, 2) limiting the release of plastic debris to the marine environment, and 3) preventing damage to humans and marine life from plastic debris. To minimize the environmental damage caused by marine plastic debris, the proposed response strategies should be implemented in parallel.

  • https://doi.org/10.7837/kosomes.2021.27.3.439 인용 PDF KSCI