| 摘要 |
<p>A paperboard making apparatus includes at least one heating plate having opposing first and second surfaces (34, 31); at least one electrically powered heater (30) positioned adjacent the first surface (31) of the heating plate; and a take-up (35) for advancing a corrugated paperboard sheet along a path of travel adjacent the second surface (34) of the heating plate so that heat is transferred to the advancing corrugated paperboard sheet. The electrically powered heater preferably includes a base, and an electrical heating element on the base. The base is preferably mounted so that the electrical heating element is positioned in closely spaced relation from the first surface of the heating plate so that the electrical heating element radiates heat to the heating plate. Accordingly, conventional steam heating chests are not used and their associated drawbacks are overcome. Method aspects of the invention are also disclosed.</p> |
