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Weight loss for milk bottles

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22/07/09

Weight loss for milk bottles

A new polystyrene is now used for milk bottle manufacture in Germany. Its name is not very sexy (BX 3580) but it shows slim figures: its density advantage means that approximately 20% less plastic is needed in the production of the bottles than for previous versions.

This also translates into 20% less packaging material that has to be disposed of.
Polystyrene, which up to now has been known primarily as a material for food-product films and yoghurt cups, is also proving its worth for re-sealable packaging made of plastic.
This polystyrene has passed mechanical, organoleptic and microbiological tests on filled PS bottles; since it is permeable to gas and water vapor, it lends itself quite well to dairy products such as yoghurt drinks and milk beverages.
The product can be processed by means of injection blow molding and injection stretch blow molding.

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