PET bottle filling
PET bottle pressure considerations for carbonated filling.
PET carbonated drink projects should be specified around the actual bottle, cap and carbonation target rather than nominal bottle size alone.
A carbonated PET bottle project needs real bottle and cap samples. Even where the label says 500 ml, bottles can differ in pressure performance, base shape, grip areas, neck finish, cap compatibility and stability on conveyors.
| Bottle sample | Send the final bottle or the closest validated preform/bottle sample. |
|---|---|
| Cap and neck finish | Confirm cap type, liner and torque expectations with sample closures. |
| Carbonation and temperature | Provide target CO₂ and product temperature at fill where available. |
| Handling stability | Check base stability, conveyor transitions and label/coding positions. |
| Acceptance check | Filled bottle appearance, firmness, leaks, cap application and carbonation retention should be reviewed. |
- Confirm whether the line needs filler only or filler plus screw capper.
- Check whether rinse, cap feeding, labelling and coding are required.
- Plan cap torque and leak checks as part of acceptance rather than after installation.
If the packaging has not yet been selected, Lancing can review machinery options, but the bottle supplier should confirm bottle suitability for the carbonation, fill temperature, cap and distribution route.
Buyer questions
Questions to resolve before specification.
Can I use any PET bottle for carbonated drinks?
No. The bottle and cap must be suitable for the carbonation and distribution requirements.
Should the capper be specified with the filler?
Yes. Screw capping should be planned with filling because closure speed and torque affect pressure retention.
What samples are needed?
Bottle, cap, label if relevant, product sample and target carbonation information are the minimum practical inputs.
Can PET and glass run on the same line?
Some line elements may overlap, but bottle handling, closure route and tooling need separate checks.
Related guidance
Continue planning the carbonated filling route.
Compare PET bottle filling and capping routes.
Screw capperScrew capper for carbonated drinksReview cap application for PET formats.
QualityFilled pack quality checksPlan filled pack checks for pressure retention and leaks.
SpecificationCarbonated filler specification checklistSend consistent product, pack, output and utility details before quotation.
Ready to specify the route?
Send the product, package and output details.
Lancing can review the drink type, carbonation target, container, closure or seam route, target output, utilities and site requirements before recommending the machinery path.