| Filling system | Isobaric, CO2 counter-pressure |
| Output range | 12,000-36,000 BPH at 0.2-2 L |
| Containers | PET bottle, glass bottle, aluminum can |
| CO2 handling | Pre-pressurisation and return pipe, no venting |
| Valves | Mechanical, semi-electric or volumetric |
| Line scope | Water treatment, syrup mixing, carbonation, filler, pack |
Four points decide it: the carbonation level set at the mixer, the product temperature at the filler, the pressure profile during fill, and the time between capping and packing. A line that holds 4.0 volumes at the mixer can deliver 3.4 in the bottle if the filler bowl runs warm or the capping head leaks.
Size the filler on peak shift demand with a production factor of 0.65-0.85, then size the CO2 supply on average consumption, not peak. A CO2 plant built for the filler nameplate runs partly loaded for most of the year and loses more gas to vaporisation than the line saves in speed.
| Valve type | Setting | Best for |
|---|---|---|
| Mechanical | Fixed cam profile | Single product, long runs |
| Semi-electric | Signal-timed open and close | Recipe changes within one product family |
| Volumetric | Chamber dose | Pressure or temperature drift during the shift |
| Isobaric + volumetric | Chamber dose under counter-pressure | High CO2 with tight fill accuracy |
Sizing for this duty runs through the CSD & Sparkling Water by Mechanical Filler, where the valve count is set out.
Warm product holds less CO2 at the same pressure, so the filler either loses gas or needs a higher pressure that increases foaming. Chilling before carbonation is the standard answer, and the chiller capacity belongs in the utility schedule.
For the same duty in another bottle format, the Isobaric Filling Machine for CSD and Sparkling Water is specified separately.
A can is filled and seamed, a PET bottle is filled and capped. Cans run faster per unit and are counted in CPH; PET allows larger formats and a lighter package. The filler principle is the same isobaric one, the closing equipment and the line rate are not.
The same question is worked through from another angle in How Nitrogen Dosers Extend Carbonated Beverage Shelf Life.
It holds what the mixer sets and the temperature allows. Most CSD runs between 2.5 and 4.0 volumes, with the target set per product. Retention, not the mixer set point, is what the acceptance test should measure in the filled bottle.
It is used where the package needs internal pressure support or low oxygen, for example in cans and in some PET formats. It is an option, not a default, and it adds a consumable cost per 1,000 units.
The higher the volumes, the sharper the mouthfeel and the more pressure the package must hold. Higher carbonation also needs a colder fill and a tighter pressure ramp, so it reduces practical line speed.
Warm product and an empty bowl. The first bottles see the largest pressure step. A short recirculation before production and a controlled bowl cool-down remove most of it.
Country: Kazakhstan
Product: PET Bottled Carbonated Soft Drinks
Capacity: 12000BPH (1L)
Solution:Carbonated Drinks Production Line
Country: Syria
Product: Aluminum Canned Carbonated Soft Drinks
Capacity: 24000CPH (250ml)
Solution:Carbonated Drinks Production Line
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