General > General Technical Chat
How safe is vinyl for other plastics?
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Alex Eisenhut:
That's what I was afraid of. Oh well it's unavoidable. They sell hemp linen bags with drawstrings on alix but they are too small.
Kleinstein:
Current plastic bad are polyethylene, and without plasticisers. PVC bags were more a thing of the 1970s.
Most new plastic parts are marked and many boxes are now more PP or PE which are no problem.
PVC is mainly found with cable isolation, but even there newer alternatives are coming up. However these can also include plasticisers.
rdl:
As others have said, just buy some PE (polyethylene) type bags. Polyethylene does not require plasticizer. Polypropylene (PP) would be okay also, though I don't think it's commonly used for bags. Another alternative might be those silvery metallized type anti-static bags. Pretty sure most of those are some kind of Mylar/polyester which also needs no plasticizer.
tooki:

--- Quote from: amyk on October 04, 2021, 02:37:23 am ---
--- Quote from: rdl on October 04, 2021, 01:38:51 am ---It's called plasticizer migration. It's a fairly complex phenomenon. To be completely safe you'd have to avoid bags made with any kind of plasticizer.

--- End quote ---
I believe only polyethylene doesn't have plasticisers; fortunately, regular plastic bags are polyethylene.

--- End quote ---
Both polyethylene and PET don’t use plasticizers, typically.

Though I did stumble across this book chapter that dives deep into the compatibility of particular plasticizers with particular polymers, attached for whoever’s curious.
Alex Eisenhut:

--- Quote from: tooki on October 04, 2021, 04:42:07 pm ---
--- Quote from: amyk on October 04, 2021, 02:37:23 am ---
--- Quote from: rdl on October 04, 2021, 01:38:51 am ---It's called plasticizer migration. It's a fairly complex phenomenon. To be completely safe you'd have to avoid bags made with any kind of plasticizer.

--- End quote ---
I believe only polyethylene doesn't have plasticisers; fortunately, regular plastic bags are polyethylene.

--- End quote ---
Both polyethylene and PET don’t use plasticizers, typically.

Though I did stumble across this book chapter that dives deep into the compatibility of particular plasticizers with particular polymers, attached for whoever’s curious.

--- End quote ---

click -> save as
thanks!
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