The decorating lehrs are designed in modules, all at a length of 2,25m (~7,5’) Pennekamp has implemented many engineering details in order to increase performance and decorating efficiencies (lead free inks) at minimised energy consumptions. Furthermore, the design of the draft system allows the operation at increased O2 levels for brighter colour, especially for the use of metallic inks.
Features
Belt width of up to 4,5m (15’)
Gas or electrical heating
All heated zones are manufactured from stainless steels, incl. inner hoods, belt supports, fan wheels and burner tubes/heating elements
Special fume and ink solvent extraction system at the charge end of the lehr with temperature monitoring
Front door manufactured from stainless steel
Gas burner system with all required safety devices
Electrical heating system operated by thyristor controls
Fully insulated lehr (all tunnel zones) with approx. 50mm (2”) of ceramic fibre and 250mm (10”) mineral wool
Insulated front door
Air circulating fan with direct shaft, no V-belt (maintenance free)
Fully automatic damper systems in order to react to production stops and gaps, maintaining of set temperature curve
Automatic process control for the control and monitoring of temperatures
Electronic control of the internal air movements (draft system) to minimise the energy consumption (air in- and outlet dampers)
Special design of fan wheels in cooling zones to mix internal air with cooling air, no direct contact of cooling air with glass
Optimal temperature distribution across lehr width
Easy to adjust belt tracking system at belt drive
Optional cooling system on discharge table
Communication link to lehr loading system
Belt return on inside of lehr with cleaning function
Control of lehr exit temperatures, required for optimal cold end coating results
