Semi-Automatic Counter-Pressure Isobaric Filler-Capper for Bottles & Cans

The LINEAR semi-automatic counter-pressure isobaric filling machine features a self-supporting stainless steel frame with castor wheels, isobaric filling nozzles and an integrated pressurised stainless steel tank. It is equipped with a stainless steel control panel and is designed for filling and closing both bottles and cans.

The isobaric filler-capper includes CO₂ pre-evacuation as standard. This process flushes the container with CO₂ before filling to remove oxygen from inside the bottle or can.

Operating principle

The following conditions and settings are relevant to the filling cycle:

1. The product temperature must be between 0 and -1°C. The machine has a compact storage tank to minimise temperature loss, and the product feed tank should be positioned as close as possible to the filler.
2. The cylindrical tank is equipped with a pressure switch that measures the pressure of the supply tank.
3. The control panel allows the operator to monitor and adjust the main filling parameters.

• Supply tank pressure
• Internal pressure of the bottle or container being filled
• Product temperature
• Pressure differential for initiating the filling process
• Number of CO₂ pre-evacuations
• Filling time
• Depressurisation pressure

The operator can set the number of CO₂ pre-evacuation cycles before filling. During this phase, the container is flushed with CO₂ to remove oxygen.

The counter-pressure filling system also allows the pressure differential between the tank and container to be set according to the product being filled. For example, with a tank pressure of 1 bar and a differential of 0.1 bar, filling takes place at 0.9 bar. If the tank pressure falls to 0.9 bar, the machine adjusts the filling pressure to 0.8 bar.

Bottles or cans are placed beneath the filling nozzles using the dedicated supports. The machine is supplied with one bottle format and one can format. Pressing the START button lowers the filling tubes into the containers.

Once the filling tubes are positioned, the CO₂ pre-evacuation phase begins. The container is then depressurised to remove air and pressurised again before filling starts.

When filling is complete, the container is depressurised and the nozzles retract. The system displays the pressure release value required to generate foam at the neck of the bottle or can.

Main features

• CO₂ pre-evacuation: included as standard
• Adjustable filling pressure: differential pressure between container and tank can be set by the operator
• Available versions: 4 or 6 filling nozzles
• Filling and capping: filling and closure operations are carried out within the same system
• Included formats: 1 bottle format and 1 can format; additional formats available with optional kits

Technical specifications

• Number of filling tubes: 4 isobaric filling tubes for bottles and cans
• Bottle capper: compatible with 26 mm and 29 mm crown caps
• Frame: AISI 304 stainless steel
• Filling tank: 8-litre isobaric tank with pressure gauge
• Pressure sensors: stainless steel, for tank and bottle monitoring
• Thermometer: analogue, -10°C to +30°C
• Maximum working pressure: 3 bar
• Pressure regulators: for CO₂ injection and container depressurisation
• Container dimensions: diameter 50–90 mm; height 140–350 mm
• Output: 400–500 containers/hour with 330 ml containers
• Machine dimensions: 2000 x 600 x 2500 mm
• Weight: approx. 120 kg
• Power supply: 220 V single-phase
• Compressed air: 8 bar

Installation requirements

• Power supply: 220 V single-phase
• Operating air pressure: 8 bar

Optional accessories and services

• Additional kits for different bottle and can formats
• On-site commissioning by a specialised technician, charged at a daily rate; travel, meals and accommodation are not included