마루판용 합판의 단판 구성요소에 따른 변형 특성에 관한 연구 = A Study on Deflection Characteristics of Plywood for Wood Based Flooring by Veneer Composition

다국어 초록 (Multilingual Abstract)

Since 1990`s, a plywood for flooring base has gotten customers` demand. Costs of raw material and production increased because of changed environment of industry. Tropical timber such as Red Meranti (Shorea acuminate) used for raw material of the floor has been depleting beside countries in South Eastern Asia changed species of afforestation. As a result, it gets hard to secure good quality of raw material for plywood. Moreover plywood price is increased suddenly after earthquake in Japan. Eucalyptus (Eucalyptus globulus) in china has been using for raw material as a countermeasure of changed environment of industry. In this study, possibility of using flooring consisted of Eucalyptus veneer as crossband layers was checked by deflection experiments. Flooring consisted of Red Meranti was used for comparison. Two factors which impact on deflection are a type of density gradient and density difference between Long-grain veneer and Short-grain veneer. Red Meranti samples are M type of density gradient on the other hand Eucalyptus samples are W type of density gradient. The more samples have high density difference, the more deformation was checked. A sample which has big density difference between core and cross bands layer warp more also deform. Flooring was deformed smaller than plywood and samples which have big density difference was deformed more.

참고문헌 (Reference)

1 "치장 목질 마루판, KS F 3126"

2 김재성, "온돌용 목질마루판의 유통실태 및 시장 확대방안" 한국산림경제학회 14-25, 2003

3 김준봉, "온돌 그 찬란한 구들문화" 청흥 398-410, 2008

4 강석구, "북미산 흑호두나무 Bi-Sn 용융합금 복합체의 제조와 특성" 한국가구학회 22 (22): 54-62, 2011

5 "보통 합판, KS F 3101"

6 안규명, "바닥재 소비자 불만" 54 (54): 2012

7 박종영, "목질판재료 및 목질마루판의 특성평가(Ⅱ) - 열적특성 평가 및 온돌모델 시험" 82-91, 1997

8 박종영, "목질판재료 및 목질마루판의 특성평가(Ⅰ) - 기계적 성질 및 수분적 특성평가" 63-73, 1997

9 이화형, "목재물리 및 역학" 향문사 2008

10 최성용, "공동주택 바닥 목재 마루판 들뜸 하자 사례조사 연구" 2008

11 Molarne Posch, P., "Testing of pre-fab flooring components"

12 Forest Products Laboratory, Forest service U. S. Department of Agriculture, "Some cause of warping in plywood and veneered products"