| Filling system | Isobaric, CO2 counter-pressure |
| Capacity 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 |
A carbonated drink is a saturated solution held in equilibrium by pressure and temperature. If the filler exposes it to atmosphere, CO2 leaves the liquid as foam and the fill level collapses. Isobaric filling pressurises the bottle to the bowl pressure first, fills under counter-pressure, then releases in a controlled ramp.
By precisely controlling the nitrogen injection and pressure levels, dosers help to preserve carbonation in CSD products.
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.
| 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 |
Valve count, utility schedule and footprint sit on the CSD & Sparkling Water by Mechanical Filler page.
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 Isobaric Filling Machine for CSD and Sparkling Water is the matching unit when this becomes a line project.
Overfoaming is gas leaving the product too fast at the end of fill. The pressure release has to be ramped, not dumped, and the fill height has to leave the right headspace. A snift valve that opens too early turns a good fill into a wet bottle.
The same question is worked through from another angle in How to Choose Csd Filling Machine.
400 cans per minute. CPH and BPH are different units and cannot be compared directly, because can and bottle formats carry different volumes and different downstream equipment.
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.
Yes, with a different infeed, spacing and capping set. Glass needs mechanical spacing rather than an air conveyor, and the filler runs at 4,000-20,000 BPH on glass against 12,000-36,000 BPH on PET.
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
+86 13921964455
[email protected]
A2 Dongjiu Industrial Park, 30 East Jintang Road, Tangshi, Zhangjiagang, Jiangsu 215600, China
