| 摘要 |
<p>The plies of a faced corrugated board are bonded together while still wet from their manufacture. As shown, a first ply is laid on a travelling forming wire 1, and each subsequent ply is formed in close proximity to the travelling forming wire and brought into bonding engagement with the top surface of the previously formed ply on the travelling forming wire. The intermediate web ply 26 is doctored off either its forming roll 6 or a pick-off roll and is allowed to contact the preceding ply 4 in its characteristic corrugated configuration. A spray 27 of adhesive material is introduced onto the first ply 4 before the corrugated ply 26 is brought into contact and another adhesive spray 28 is introduced onto the top surface of the corrugating medium to bond it to the top ply. <IMAGE></p> |
