Preform quality
A bottle is only as good as the preform it was blown from. Here is what our preforms are made of and how to check any batch yourself.
Normal light
Polarised light
Illustration. Between polarisers PET shows wall stress as colour bands. An even pattern means an even wall, which is why preforms are checked this way in production.
What we stand behind
A bottle is only as good as the preform it was blown from. That is why we use virgin PET and standard necks.
Bottle-grade virgin PETNo recycled content, so bottles come out clear and strong.
Standard necksPCO 1881, PCO 1810 and 38 mm fit standard caps and blow moulders.
Clear and tintedClear for water and oil, blue for water and soft drinks. Other colours on request.
Fully documentedA VAT-registered LLP: contract, VAT invoice and closing documents.
Our preforms in photos
Photos from the QazaqEt Instagram
How to check a batch in 10 minutes
Four steps on delivery. The full warehouse and shop checklist is in the storage article.
Open the checklist- Check the labelsWeight, neck and colour on the box match the order; the batch number is recorded.
- Weigh a sample10 preforms on precise scales: the weight should match the nominal and vary little between pieces.
- Look against the lightNo bubbles, black specks or streaks; even colour across the batch.
- Check the neck and gateThread free of flash and chips; a clean gate with no strings or white spot.
Found a defect in a batch?
Send photos and the batch number from the box. We will look into it and propose a solution.
