As above. They are noticeably different to milk bottles or yoghurt carton plastic.
Is it something to do with how the contents react to light?
Firstly it's a different plastic, milk bottles are usually HDPE and yoghurt pots are PS or PP. Most drink bottles are PET.
These milkshake bottles are probably PET. Some of my guesses as to why they're thicker:
Contents are not carbonated (which keeps the bottle walls tight & strong), so the bottles need to be a bit thicker to be sturdy. Also because the contents are heavier.
Maybe it helps keep the temperature better, cos milk is more temperature sensitive.
Feels better quality than a thin crinkly bottle.
Curious to find out the answer if someone knows for certain 🙂
Kefir (and smoothies, which also have thick skinned bottles) can ferment, but I wouldn't think the pressures approach soda levels(?).
Possibly acidity?
It'll be a perceived quality call I assume. We accept paper thin milk bottles because that's the norm and milk's cheap. The pre prepped beverages are premium products and will require something more robust. Very much doubt it's more complicated than that.
Yep, the only reason is to make you think you're not getting utterly rinsed whenever you buy one 🙂
In forrin they sell kefir and the like in cardboard cartons. They do here, in Polish shops, come to think of it. No idea why Yeo Valley etc don't do the same.
In Israel they sell milk in bags, it was something to get used to when I was there years ago! The shops have a big chest fridge thing full of 1l sacks of milk, you need to have a special jug that you just plop the bag in and snip off a corner.
Best thing about it: buying a small bag of chocolate milk and sucking it out.
Worst thing about it: when one of the bags has burst and covered all the others in a rank sticky coating 🤮 Easy enough to wash them, though.
They are reusable. We use them for freezing milk. don't get them any more since making our own kefir 😏
They are reusable. We use them for freezing milk. don't get them any more since making our own kefir 😏
And the Humblebrag of the day award goes to......
When I was little and visiting relatives in Germany we used to go to Christa's shop on the corner with a jug which would be filled from a churn. No plastic bags in those days.
The 1L kefir and 2pts semi bottles in my fridge are both HDPE 2 for recycling
Yeah, it's cuz juice has acids that can break down certain plastics, so they use a diff type that's more resistant. Also helps block light to keep it fresh longer.
In the case of milkshake, they need to be more robust so as not to be damaged by all the boys in the yard.
In the case of milkshake, they need to be more robust so as not to be damaged by all the boys in the yard.
👌🏻👏🏻🎩🫶🏻
I have to say that standards are slipping on here. I expected a full response from the head of bottle technologies at a large company to have explained all by now.
