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HavartiBob t1_irkor1d wrote

My god. That’s nearly a kilometre.

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Clearandblue t1_irljvcz wrote

I was thinking it's a short life ha. I think it says something about how well stored it was though that it didn't degrade in that time.

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seklerek t1_irm9gof wrote

it's plastic, it doesn't degrade

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Clearandblue t1_irmb28n wrote

Does in sunlight. UV tends to break down most plastic and I can't see plastic wrap being particularly UV resistant as it has no need to be. Normally. If you're not keeping it for 20+ years.

Edit: sorry, to be clear I just meant it would degrade by breaking down into tiny pieces. Not trying to say it is biodegradable or anything. Just that it'll go brittle and turn to dust if too much UV gets to it.

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Childhood_Charming t1_irmetmj wrote

So dust we breath in? Plastic dust!!

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Clearandblue t1_irmg9tj wrote

Ha not necessarily. We could also eat it if it gets into the soil. Or drink it if it gets into the water. The reason I know is because I once left a roll of shrink wrap (the kind you'd use to wrap up luggage or boxes) down the side of my shed for a summer by accident. After the tail end of a British summer that thing was disintegrating in my hands. Had to be careful to dispose of it without just spreading it.

That wrap was more heavy duty than the kitchen stuff. It had been left in partial sun down the side of my shed and it had only been subject to a few months of British summer. Where even the direct UV index would never really exceed 7. Let alone partial shade.

So it made me realise how quickly plastic wrap can degrade in UV. You can get special stuff that's more UV resistant but it costs a lot of money. Even then you'd be lucky to exceed 7 years I think.

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entropop t1_irmkpap wrote

I tried to make a greenhouse for early seed germination once with cling wrap. It was really great for a couple weeks and then just kind of turned to dust.

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seklerek t1_irmb9au wrote

Ah fair enough then, but you'd think this wasn't really exposed to UV because it was in a box the whole time.

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Clearandblue t1_irmfov4 wrote

Yeah for sure. I just thought over 26 years the family did a good job of keeping it stored well and never leaving it out.

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Albatross85x t1_irn2g16 wrote

Gets flaky. Reminds me of the kid from school with bad psoriasis.

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rr777 t1_irmf3a8 wrote

I have used old plastic wrap. Lost all its static cling but did not degrade.

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heredude t1_irmnijf wrote

Leave it in the sun for a couple weeks.

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pkc0987 t1_irmpfz9 wrote

I used to work in an extrusion plant and make this. One role would be 20km+ long and take a couple of people to get it on and off the pallet truck to weight it!

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DurinsBane1 t1_irn3fhn wrote

How do they extrude it so thin ?

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pkc0987 t1_irngszt wrote

Thickness was generally inversely proportional to speed; if you wanted something thick enough to make body bags it ran really slow; if you want super thin like this you have the output low and the speed high. From what I can remember anyway, was 20+ years ago!

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deelyte3 t1_is0fesr wrote

So THAT’s how you weigh 20 kilometres!

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