Easy to handle and with real weight and safety advantages with regard to susceptibility to breakage, PET bottles offer real benefits to both manufacturers and consumers. French dairy company LSDH is claiming a world first for the launch of the PET bottle for UHT milk using dry decontamination technology. PET bottles have high strength to weight ratio than other plastic materials that are used for the packaging or milk. PET bottles can be used for both types of filling cold and hot. At high temperature filling ordinary plastics began to deform even amorphous PET also but PET have properties that it can be crystalized and crystalized PET can be filled at high temperature.
Acetal Aldehyde (AA) Level
Acetal Aldehyde is present in raw PET granules that do not create any problem or health hazards but if PET if processed at high temperature then AA level increases which causes change in the taste of packed fluid in it.
PET milk bottle advantages:
Significantly lower weight of a milk bottle than in case of other materials such as glass or HDPE (weight of 1L milk PET bottle is only 25g, while weight of 1L HDPE container is 38-40g).
Decontamination of bottles
Packaging of milk is not an easy task as milk and milk products can be destroy, change its odor or color when exposed to light, air or microbes. To overcomer and avoid this situation decontamination process is compulsory for bottles before filling with milk or milk products. Decontamination is done by steam or by new technology hot decontamination by hydrogen peroxide.
No material loss during production
Lower costs due to material saving and manufacturing technology (high efficiency, low power consumption, full automation of the process).
PET milk bottle offers better barrier against oxygen and better protection from odors than HDPE.
Possibility of producing tailor-made bottles with original shapes, which are attractive and aesthetic for customers and create great marketing opportunities.
PET milk bottles can be transparent or colored in different colours including white, which reduces the effect of light on milk.
Smooth, aesthetic finish of a bottle neck, formed during preform injection – no knife cut-off trace or spikes like in a HDPE.
New generation of cap closure dedicated to milk PET bottle that prevents contamination of the product in case of multiple use (repeated opening and closing).
PET milk bottle is extremely lightweight and has a high shock-resistance. It’s convenient for production and distribution.
Transport in several layers is possible – up to six layers with the right bottle design.
Positive environmental profile as PET milk bottle can be easily recycled.
Like glass, PET is a biologically inert material that doesn’t react with beverages or foodstuff and is resistant to attacks by micro-organisms.
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