• Title/Summary/Keyword: wood industry

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Analysis on the Relationship between the Prices of Pulps and Wood Chips (펄프 가격과 목재칩 가격간의 상관관계 분석)

  • Lee, Kee-Hyun;Kim, Chul-Hwan;Kim, Eui-Gyeong;Ahn, Byeong-Il
    • Journal of Korea Technical Association of The Pulp and Paper Industry
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    • v.43 no.3
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    • pp.128-136
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    • 2011
  • In order to investigate the relationship between the prices of wood chips and pulps, regression analysis and cointegration test were conducted. Test results indicated that pulp producers adjusted pulp price in response to the change in wood-chip price and there were a long-run relationship between these prices. This implied that by raising the selling price of pulp, pulp producers avoid profit loss incurred by the increase in the wood-chip price. The existence of cointegration between wood chips and pulp prices implied that pulp producers were competing when they set the selling price of pulp.

펄프 용재의 경제적 활용을 위한 펠릿 대체 원료 탐색

  • Kim, Seong-Ho;Kim, Cheol-Hwan;An, Byeong-Il;Lee, Ji-Yeong;Sheikh, M. Mominul Islam;Park, Hyeon-Jin;Kim, Gyeong-Cheol;Sim, Seong-Ung;Gang, Tae-U;Jo, Hu-Seung
    • Proceedings of the Korea Technical Association of the Pulp and Paper Industry Conference
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    • 2011.10a
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    • pp.289-296
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    • 2011
  • Recently, much of forest biomass has been obtained from the national forest management operation. Unfortunately, Korean Forest Services has a plan to use this forest biomass as energy fuels for wood pellets. Considering unhappy situation that about 80% of wood pulps has been imported, it is regarded as unwise decision. If forest biomass can be used to make pulps or other valuable woody products, we are able to double its economic value than the raw materials for wood pellets. In this study, we explored alternative raw materials for wood biomass used to make wood pellets. For this, fresh technology such as torrefaction was applied with the other lignocellulosic biomass.

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Intercalation Behavior of Clay in Polypropylene/Montmorillonite/Wood Nanocomposites (폴리프로필렌/몬모릴로나이트/목분 나노복합체에서의 클레이 박리거동)

  • Kim, Jin Sung;Lee, Sun Young;Yoon, Ho Gyu
    • Journal of the Korean Society of Industry Convergence
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    • v.13 no.2
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    • pp.93-98
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    • 2010
  • Polypropylene / montmorillonite / wood flour nanocomposites are melt-mixed by using a twin screw extruder. The montmorillonite is intercalated by the wood flour and the basal spacing of montmorillonite is increased with increasing the content of wood flour. The exfoliation constantly occurs by adding more than 10 wt.% of maleic anhydride-grafted polypropylene as the compatibilizer, which is used for improving the interfacial adhesion between matrix and filler. Also, the maleic anhydride-grafted polypropylene enhances the mechanical properties of the nanocomposites.

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Investigation on the Awareness and Preference for Wood to Promote the Value of Wood: II. Awareness of Wood Cultural Resources (목재 가치 증진을 위한 목재에 대한 인식 및 선호도 조사: II. 목재문화자원에 대한 인식)

  • HAN, Yeonjung;LEE, Sang-Min
    • Journal of the Korean Wood Science and Technology
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    • v.49 no.6
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    • pp.643-657
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    • 2021
  • In order to establish a strategy for revitalizing wood culture, a survey was conducted on the level of public awareness of wood culture and the experience of wood cultural resources by type. According to the survey, 31.4% of respondents had the images of cultural heritage such as palaces, temples, Hanoks, and cultural assets for wood cultural resources. The main reasons for having no image of wood cultural resources were the ambiguous concept and lack of interest in wood cultural resources. The importance of wood cultural resources classified into seven categories was in the order of cultural heritage, architecture of wood, cultural facilities, cultural festivals, wood products, cultural education, cultural contents. In the survey on the necessity and sufficiency of information on wood cultural resources, 46.7% of respondents needed more information to experience of wood cultural resources, while 64.8% of them had lacked information about wood cultural resources. More than half of the respondents wanted to experience of wood culture within next year, but about 20% of respondents participated in seven kinds of wood cultural resources, except wood products used in daily life. Based on these results, a systematic strategy should be developed to expand the opportunity for the public to experience of wood cultural resources and to promote them to public.