Sterilization Tunnel

The NRT series tunnels are the radiation type: the sterilization process takes place by medium-wave infrared rays emitted by special clean sources.
Said sources are quartz lamps with 99,99% Nickel filament and a gilded reflecting surface, installed above and below the conveyor belt so as to cover the entire outer surface of the bottles.
The sterilization chamber is divided into several zones, each provided with independent temperature adjustment.

Standard features

  • The radiation type NRT series sterilization tunnels are built in stainless steel, in compliance with the GMP cfr 21 regulations.
  • The types of steel used are: AISI 304 for the supporting structure and external panels, AISI 304 LC with a low carbon content or titanium AISI 320 for the internal parts subject to particular thermal shock; these steels have a high degree of stability even at the highest working temperatures.
  • The sterilization chamber is isolated from the external environment by means of double-wall fiberglass-filled panels.
  • The side doors can be fully opened and ensure easy access to the machine interior for cleaning operations.
  • Entry and exit laminar flow air barriers ensure that the entire machine maintains pressure to the outside environment, preventing it from contamination.
  • The absolute filters provide a vacuum seal to the machine interior; this also makes it impossible for contamination to occur from deterioration of the seals.
  • The laminar flows are equipped with scanned and certified absolute filters, with 99,999% DOP efficiency.
  • The fans which supply the absolute filters are powered by variable speed motors by means of frequency converters.
  • The stainless steel mesh conveyor belt is fitted with side chains.
  • The conveyor belt is driven by pinions which eliminate any possibility of slipping and ensure positive transfer and correct sterilization times.
  • The conveyor system is protected by a torque limiter which stops the machine in the event of overloads.
  • The basic sterilization parameters, such as temperature and time, are controlled and visually displayed during the entire processing period.
  • Temperature adjustment takes place through static contactors.
  • The vials and bottles are cooled by the exit laminar flow which also counter-balances the overpressure in the sterile chamber.

Technical Data

Model

A

B

C

NRT100S

600

1600

3100

NRT150S

600

1600

3400

NRT200S

600

1600

4300

NRT150M

900

1900

3400

NRT200M

900

1900

4300

NRT 150L

1200

2200

3400

NRT 200L

1200

2200

4300

NRT 250L

1200

2200

4800

NRT 300L

1200

2200

6000

NRT 350L

1200

2200

6500