Hi Guys
I work with organic concept of children’s material, as for example without BPA in the composition. Is there any BPA free fill? Do you know anything similar?
Tks
Carol
It looks like BPA is mostly used in polycarbonate plastic, epoxy and PVC. It looks like if you avoid those, you avoid using a BPA-based plastic. If you need any better assurance, you would need to ask the manufacturer yourself.
PLA no BPA, used in 3D printers made from plant material biodegradable
PETG is a variation of PET used in soda bottles… its food safe(which pla is not) so it should be safer for kids.
the problem is not only BPA (although thats one of the “media” bad guys)
the problem is that all additives added to a plastic are hold inside the polimer chains. They are not “bind” as part of the chain!
in time(and because mechanical deformation, uv reaction, etc), those additives break off the polymer into the environment!
thats why you see rubber tires cracking, plastic parts that get yellow, etc.
The additives that make the rubber tire be as strong as it is, drop off the polymer and the rubber starts to break apart.
When a plastic is “food safe”, it means that its usually made with no additives (or should be)…
instead, all the properties of the plastic (like color, strength, alongation, etc) are givem by compounds that are attached as part of the polymer chain!
unles the plastic breaks, the compounds won’t leave the chain!
which means, u can put food in it and eat because it has no additives to get loose and attach to the food!
PET is one of those polymers, thats why its so resistent (it never looses its properties) and its so widely used with soda.
BPA is one of those additives (theres thousands more), which recently has being associated with cancer by research.
But because theres thousands more, theres really no way to known what causes what.
Thats why theres the “food safe” plastics! Off course in the future, it may be that someone finds out that something in PET is not as “attached” as they thought and get looses on food, and then pet will be dimmed as not food safe.
but so far, PETG is your best bet as a “safe” plastic, imro! 
Also, be carefull to get food safe materials from countries that are better at enforce the foos safe label. Personally, I like european materials(specially german), basically because its not only one gonverment making the effort to enforce!!! Because its a common market, companies have to make sure they abide by the european “safe food” definition, or else they can loose the market if one country finds out they’re not!
Also, Europe is much faster in research and in prohibition than other countries (for example, DOP is another very common additive for PVC and ABS thats has being found to cause cancer by European research and has being prohibited in Europe many years ago, but its still legal in south america, china and even the US as far as I known)
the truth is that, even with all the “bad for you stuff” found everywhere these days, we can’t deny that people live longer today than they used to before food chemicals and plastics where invented… (aveage lifetime back in 1900 whas 40!!! I’ll be 5 years dead now! lol)
but doesn’t hurt at all to avoid what we can, right? specially with children!
so, look for food safe 3d printable materials and you should be fine!!
my 2 cents…
(sorry the mispelling… I’ve tried to fix all of then, but typing in my iphone is terrible!)
BPA is not an additive, but the raw material polycarbonate is made of from.
Simple proposition: Just get some explicitly food-safe filament (like Verbatim PET https://youtu.be/C6SCkzI8HqM, yes, shameless plug, but it fits)
Just because something is labeled BPA free does not make it safe. When BPA came under research scrutiny awhile back, the industry switched to different plasticizers that have not been studied as much, but are likely just as bad for you.