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Milk vs. OJ Plastic bottles

Milk vs. OJ Plastic bottles

Milk vs. OJ Plastic bottles

Can any one explain the difference in crushing resistance or toughness between the two types of bottles for the referenced beverage. I believe the P.E. is used for both bottles.

RE: Milk vs. OJ Plastic bottles

In the USA, most orange juice uses PET bottles. Milk jugs use HDPE. PET is much higher in strength and stiffness than HDPE, which would account for most of the performance difference during crushing. Toughness refers to resistance to crack propagation, and should not influence the results during crushing.

RE: Milk vs. OJ Plastic bottles

Thanks for the difference in types of plastics used for the two products.
When I referred to the word toughness, it was not meant to be in the engineering sense, just that it was harder to crush.

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