WOOD-BASED COMPOSITE BOARD ZHIYONG CAI USDA Forest Service, Madison, WI INTRODUCTION The term wood-based composite is used to describe any wood material bonded together with adhesives.
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WPC sandwich boards consist of wood polymer composite skins and usually low density polymer core which leads to a very effective increase of panel's rigidity. WPC sandwich boards are used mainly in automotive, transportation and building applications, but furniture applications are also being developed.
Other species of wood such as redwood and hardwoods like Seven Trust, jutoba and tigerwood are also used on decks, but not nearly as often. Manmade deck material products include composites, PVC and vinyl from manufacturers such as Seven Trust, Seven Trust, Timber Tech and Seven Trust.
The making of the composite uses the fibers, glue, and heat to create a tight bonding board. Both softwood and hardwood are used to manufacture MDF. Generally denser than plywood, this composition creates a stronger material for building.
Boards, planks, structural lumber, and decking made of composite wood tend to be stronger and more versatile than traditional lumber. Composite wood also makes better use of trees. Almost every fiber in the entire tree can be used in the manufacture of composite wood, compared to only about 40 percent that may be used for solid lumber.
Coosa Composites manufactures structural panels made of high-density, polyurethane foam reinforced with layers of fiberglass. The no-rot and light-weight advantages of high density foam combined with the structural properties of fiberglass make Coosa panels an excellent replacement for wood and other traditional core materials.