| 摘要 |
<p>Corrugated cardboard blanks are cut up into strips (20). A large number of strips (20) are laid flat on one another to form a stack (38). The stacks (38) are led flat through a coating station (44). Using a first nozzle (46), a mist of a coating material (48), in particular of water glass, is applied to one surface (39) of the stack (38). By means of a second nozzle (46a), the said coating material is blown through the corrugation cavities of the strips (20). Kraft paper (58) or similar material is applied to the two flat sides of the stack (38). The core (22) formed from the stack (38) and the coating material (48), together with the Kraft paper/s is dried in a drying device (62), and the coating material (48) is hardened. This produces a core (22) of corrugated cardboard which has high strength. By bonding boards (24, 25) to the two large faces of the core (22), bending-resistant and pressure-resistant, and even multi-layer composite board or panels are formed.</p> |
