| 摘要 |
<p>Sandwich construction building materials (10) are produced using conventional facings or plywood, fiberboard, particle board, mineral board, wood, metal, plastic, etc. on both faces (12, 14) of the building material (10), in the inner core (16) therebetween being made from natural wood veneer, veneer made from wood fibers or shavings bound by synthetic resin, etc., shaped into elongate strips (18) of angular, corrugated or undulating configuration or rolled into hollow cylindrical tubes. The strips (18) or tubes may be cut transversely into sections of equal height and assembled proximately or contiguously to form an inner core layer (16) having an openwork pattern. Openwork may be filled with insulation or strengthening materials, and core elements may be coated. The resulting building products (10) may be modular, lightweight, strong and suitable for use as plywood, flooring, walls, beams, joists, trusses and posts.</p> |
