| 摘要 |
<p>A system and process for fabricating pressboard from shredded paper coated with a thermoplastic material and a pair of facing webs includes placing the shredded poly-coated paper between the two traveling webs to form a composite, the composite then being passed in a manner to differentially shift the traveling webs relative to each other for enhanced bonding of the shreds to themselves and to the facing webs, by pressing them through a series of heated rollers defining a serpentine path while heating the thermoplastic material above its softening point, and pressing the composite together.</p> |
