PET PREFORM BLOW MOULDING: INNOVATIONS IN PACKAGING FOR MINERAL WATER
Krivoozerska always strives for excellence in producing mineral water. One of the most important aspects of our work is high-quality packaging, which is key to preserving the natural composition of the mineral water and to delivering it reliably to the consumer.
We use modern PET preforms manufactured with advanced technology thanks to our partners:
- PET Technologies – innovative technology for creating high-quality preforms.
- Resilux and IPP – leading manufacturers of PET preforms.
In this article we look at the PET preform manufacturing process, their use in the mineral water industry, the specifics of their design and shape, and quality control at every stage of production.
PET preform manufacturing
What are PET preforms?
PET preforms are semi-finished products that serve as the basis for making plastic bottles. They are produced by injection moulding from polyethylene terephthalate (PET) — a material with high strength, transparency and chemical inertness, which allows mineral water to be stored without changing its natural composition.
The PET preform production process
- Material preparation – PET granules are heated and melted to a uniform state.
- Injection moulding – the molten polymer is injected into special moulds and formed into preforms.
- Cooling – to prevent deformation, the preforms are cooled quickly, after which they take their final shape.
- Quality inspection – the finished preforms undergo quality control that guarantees their compliance with international standards.
Production photos
The use of PET preforms
Advantages of PET packaging in mineral water production
- Light weight – plastic bottles are much lighter than glass, which reduces transport costs.
- Strength – PET bottles are resistant to mechanical damage and do not shatter.
- Chemical inertness – the material does not react with the water, preserving its natural taste.
- Eco-friendliness – modern technology allows PET to be recycled, reducing the negative impact on the environment.
The bottle blow-moulding process
- Heating – the preforms are warmed to the required temperature.
- Blowing – under high pressure they take the shape of a bottle.
- Cooling – the shape is quickly set.
Our partners Resilux, IPP and Pakers specialise in producing high-quality preforms that meet the highest global standards.
Preform design and shape
The design of PET preforms is crucial to the final product. It determines not only the bottle's appearance but also how convenient it is to use.
Key aspects of preform design:
- Volume – depending on market needs, preforms are produced for 0.5 L, 1 L, 1.5 L, 2 L bottles and larger.
- Shape – an ergonomic bottle design ensures comfortable use.
- Neck geometry – determines the cap type and ease of pouring.
The modern equipment we use makes it possible to create unique PET packaging designs that meet all market requirements.
Quality control
Quality control is a key stage in the production of PET preforms and finished bottles.
Main inspection parameters
- Wall thickness – ensures uniform strength of the packaging.
- Transparency – the absence of defects in the material guarantees a clear bottle.
- Airtightness – the correct material structure keeps out air and keeps the water fresh.
Thermo-Pak develops advanced automated inspection systems that guarantee defect-free production.
Our partners — a guarantee of quality and innovation
To ensure the best packaging quality, Krivoozerska works with leading manufacturers of PET preforms and equipment:
- PET Technologies – a leader in producing equipment for forming PET bottles from preforms.
- Resilux, IPP, Pakers – international companies producing eco-friendly PET preforms.
- Thermo-Pak – advanced solutions in packaging automation.
- Atlas Copco – innovative compression systems that ensure a high-quality bottle-blowing process.
High-quality packaging is key to preserving the natural composition of mineral water. Thanks to modern PET preforms, our products retain their unique properties and mineral balance. We use only proven solutions from the world's best manufacturers, which guarantees our customers quality, safety and eco-friendliness.