| 摘要 |
<p>Fabricating a structural member (200) by advancing a wrapper (4) with a core (30) emplaced thereupon along a track (16) in a direction of material flow, the wrapper being formed of a flexible sheet of cellulose based material, the core being formed of laminated fiberboard sheets; engaging the wrapper and the core between side rollers (141-155) imparting a peripheral tension to the wrapper around the core as they advance along the track; engaging the wrapper and the core between top rollers (161-175) and the track to draw the wrapper about the core, the top rollers imparting a peripheral tension to the wrapper around the core as they advance along the track, the peripheral tensioning of the wrapper about the core being in directions orthogonal to the direction of material flow; securing adhesively the wrapper in tension to the core with adhesive between the core and the wrapper.</p> |
