Galileo 3320

Metallizer
Working width: 3350mm
Materials: PET 8-35MY, BOPP 11-60MY, LDPE 20-100MY, CPP 20-60MY, PVC 20-80MY
Maximum diameter reel unwind: 1000mm
Maximum diameter reel rewind: 1000mm
Evaporation boots: 37
Pumping down time: to 5 x 10-4mbar, less than 5min
Pumping system: metallizing chamber, diffusion pumps 50000l/sec, roots pumps 5500m3h
Winding chamber: roots pumps 13000, roots pumps 5500m3h
Guard chamber: roots pumps 5500m3/h, roots pumps 1000m3/h
Polycold: 2
Maximum web width 3350mm
Maximum/minimum metallizing width: 3330-1270mm
Maximum diameter: 1000mm
Internal core diameter: 254/152mm
Maximum weight: 3500kg
Slitter included

Winding system: maximum working speed 1000mm-min 90m/min
Four motor driven rollers, regulated by a drive control system
which controls the dynamics of the web transport the speed and the tension values along the film path
Unwinding and rewinding axles, with locking devices for expanding shafts manually operated
One spreader bowed roller before the metallization, which is synchronized to the coating drum
The bending plane can be adjusted from the operator console during the process remote control
Its bow degree can be changed when the machine is in stand by
Coating process drum chromium plated and polished
One tensioning capstan roller
Several web guiding rollers before and after the metallizing drum
Tendency driven roller is mounted after the coating drum

A lay on arm for the rewinder with these features: spreader bowed roller
Bending plane can be varied from the console during the process, distance and contact modes are possible
Electrical feeding: tension +6-10% 480v, frequency ±4% 60hz
Phase 3 wires: 3 + ground, maximum absorbed power approximately 550kw
Cooling water: flow rate approximately 800l/min

Evaporation system: sources lay out for a high aluminium uniformity boats on two rows
A large diameter metallization drum provides for a lower heat impact on the film
The evaporating sources bars of intermetallic sintered materials are press fitted to water cooled copper spring loaded clamps
Individual power supply control for each source
Individual Al wire feeding by means of stepping motors
Short and straight Al wire feeding system to prevent wire jamming
Evaporation area is enclosed within cooled shields, lifted for fast cleaning
Shutter, a cooled movable shield, covers the heat sources before running on the film

It opens automatically at a preset minimum speed and closes
when the same speed is reached during deceleration or when an emergency occurs
Direct observation of the sources through a large window protected from Al dust
PLC controls the sources switch on
Progressive heating
Delayed switch off for Al drying and the delayed venting of the chamber for cooling the sources
Adjustable metallizing width by means of movable cooled shields under the process drum
Motor driven shield can swing down, for easy cleaning

Extra cooling element: an isolated high pressure zone enhances the heat transfer from plastic material to chilled rollers

The system, a sort of cooling chamber, controls the film temperature trend during metallization
qualitatively represented by the lower curve of the graph allowing more favorable conditions
with respect to the standard system low pressure and even more so,
with respect to a metallization without simultaneous web chilling no cooling
Advantages are: lower roll temperature, heat generated wrinkles avoided