Why most factories buy bottles in
A PET bottle line is capital-heavy, needs a clean room, and only pays for itself at volume. Buying bottles from a specialist supplier is the rational choice for most assemblers: no capital, no clean room, no scrap rate to manage. The trade-off is that the bottle becomes somebody else problem — and eventually yours.
In practice that shows up in three ways. You cannot change the shape quickly. You inherit the supplier lead time. And if your bottle is your product differentiation, you are differentiating with an object you do not control.
What we do instead
- 300 m² dust-free blow-moulding workshop, inside the same 5,000 m² plant as design, assembly and testing.
- Up to 3,200 food-grade PET bottles a day, alongside 2,000 machines a day.
- Every bottle inspected — appearance and wall thickness, not sampled.
- Every batch burst-tested. A destructive test at 2 MPa, so the bottles can be rated to hold 1.8 MPa without bursting.
The machines themselves are not tested once either. Every unit goes through two 100% high-pressure tests — first at sub-assembly, on the gas and release components, and again at final assembly with the bottle in place. You can see where those two checks sit in the process on design and made.
What it changes for you, the buyer
You can change the bottle
A new shape is a tooling conversation with us, not a negotiation with an outside supplier about their minimum order and their mould schedule. If your market wants a shorter bottle so it fits in a fridge, that is a change we can make rather than a change we have to request.
The pressure rating is ours to guarantee
The bottle carries the carbonation. Ours hold 1.8 MPa without bursting, and we test to 2 MPa destructively, batch after batch, which is what lets us state a 17 bar bottle rating with a straight face. Those numbers are not marketing — they are the reason the bottle is inspected one at a time rather than by sample.
One supply chain instead of two
When a bottle supplier has a bad month, an assembler has nothing to ship. Because both parts come from the same building, our production plan is one plan. That is also why we can do things like the 1 L bottle with an 800 ml fill line — the fill line is a bottle decision, and we make the bottle.
Efficiency you can measure
Carbonation efficiency is a function of how gas meets water and how much of it stays. Our two-stage release — slow first, then fast, so it does not spray — plus the bottle interior we control, is how we get up to 30% more gas into the water than the baseline we were designing against.
The honest trade-off
Doing bottles in-house is not free. It is slower to start, it needs capital, and it means we carry a clean room that a pure assembler would not have. We did it because the bottle is the part of a soda maker a customer touches every day, and because outsourcing the one component that defines the product is the wrong place to save money.
It is also the clearest way to answer a question importers ask early: is this a trading company or a factory? Design, injection, blow-moulding, assembly, inspection and packing are all in the same building. There is no third party in the middle to blame. If you want to run that check on any supplier, our guide lists ten questions that tell a factory from a trading office.
If your product idea depends on the bottle — the shape, the size, the pressure, the way it stores — tell us that in the first conversation. It is much easier to design around your bottle than to re-tool for it later.