Journal of the Korean Wood Science and Technology

The Korean Society of Wood Science & Technology (한국목재공학회)
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Study on the course of air-drying of red pine and Italian poplar boards

소나무와 이태리포플러 판재(板材)의 천연건조(天然乾燥)에 관(關)한 시험(試驗)

  • An, Soo-Gu (Department of Forest Products and Technology, Seoul National University) ;
  • Lim, Hyuk-Dong (Department of Forest Products and Technology, Seoul National University) ;
  • Jung, Hee-Suk (Department of Forest Products and Technology, Seoul National University)
  • 안수구 (서울대학교 농과대학 임산가공학과) ;
  • 임동혁 (서울대학교 농과대학 임산가공학과) ;
  • 정희석 (서울대학교 농과대학 임산가공학과)
  • Published : 1976.03.30
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Abstract

This Study was carried out to investigate the course of air-drying and drying defects of red pine (Pinus densiflora S. et Z.) and Italian poplar (Populus eurameriana I-476) boards 1,2 and 3cm thick in the flat pile. The results are as follows. 1. Air-drying curves for red pine and Italian poplar boards were same as figure 1 and 2. These moisture contents were lower in July and August during seasoning periods. 2. Air drying time of red pine board required to dry 15 percent moisture content in one week for 1 cm board, five weeks for 2 cm board and six weeks for 3cm board respectively. In case of Italian poplar boards, in one week for 1 cm board, four weeks for 2 cm and five weeks for 3 cm board. The thickness of board influenced the time for air drying. 3. Drying defects such as checking, warping and staining happened badly in pine than in Italian poplar boards. Especially, checking was severe in thicker board and warping in thinner board.

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