In a beverage bottling plant for filling beverage bottles with liquid beverage material having a plurality of rotary machines such as a rotary beverage bottle filling machine, a rotary beverage bottle closing machine, and a rotary beverage bottle labeling machine, a beverage bottle labeling machine comprising:
- a rotor;
- a rotatable vertical machine column;
- said rotor being connected to said vertical machine column to permit rotation of said rotor about said vertical machine column;
- a plurality of beverage bottle support structures being disposed on the periphery of said rotor;
- said beverage bottle support structures being configured to support and hold filled, closed beverage bottles;
- at least one beverage bottle labeling device being configured and disposed to affix a label to the surface of a beverage bottle;
- said at least one beverage bottle labeling device comprises:
- at least one vacuum drum being configured to hold labels on the outer surface thereof and transfer labels;
- said at least one vacuum drum comprising:
- a drum carrier;
- a rotatable drum element being disposed in said drum carrier;
- a drive shaft being configured to rotate said rotatable drum element;
- said rotatable drum element comprising:
- at least one vacuum opening being disposed on the exterior surface of said drum element;
- at least one vacuum channel being connected to said at least one vacuum opening and being disposed in the interior of said rotatable drum element;
- and
- a vacuum distribution ring being configured and disposed to connect said at least one vacuum channel to a vacuum source, to thereby connect said at least one vacuum opening to a vacuum source;
- said drum carrier comprising a heat sink being disposed adjacent to said rotatable drum element and being stationary with respect to said rotatable drum element;
- said rotatable drum element further comprising a first heat-conductive material;
- said heat sink comprising a second heat-conductive material;
- said second heat-conductive material of said heat sink having a higher heat conductivity than said first heat-conductive material of said rotatable drum element;
- and
- said heat sink being configured to draw heat away from said rotatable drum element to thereby cool said rotatable drum element and minimize expansion of the diameter of said rotatable drum element.