Studies on Manufacture of Thin Composite Panel for Substitute Use of Plywood (II) - Development of Thin Composite by Composition Type Applied to Optimum Manufacturing Condition -

합판(合板) 대용(代用) 박판상(薄板狀) 복합재(複閤材) 제조(製造)에 관(關)한 연구(硏究) (II) -최상제조조건(最適製造條件)을 적용(適用)한 구성형태별(構成形態別) 박판상(薄板狀) 복합재(複閤材) 개발(開發)-

Eight types of thin composite panels were manufactured by press-lam and mat-forming process applied to optimum manufacturing condition, studied in former first research by author (1995). They were tested and compared with control boards on dimensional stability, internal bond strength, tensile strength, Screw withdrawal strength, and bending properties. These thin composite panels manufactured by mat-forming process were generally superior to those by press-lam in dimensional stability and mechanical properties. In the dimensional stability and mechanical properties of thin composite panels manufactured by mat-forming process, the thin composite panels (A and E type) composed of particle or sawdust core and veneer face with polyethylene film, were as good as those of common plywood (control board). Internal bond strength showed highest value in the thin composite panel(D type) which composed of particle core and polypropylene screen face with polyethylene film. The thin composite panels(G and H type) composed of sawdust or particle core and polypropylene screen face with polyethylene film by press-lam and mat-forming process, showed most highest value in dimensional stability and water absorption.