kmanstudios 1,120
Food safe materials are definitely the way to go as long as they meet your needs. Most of the things I am researching deal with contact with skin and trying to minimize the allergy issues.
Right now my motto is, "If it's food safe, it is skin safe." At least until I find out otherwise and not accounting for extra issues like very specific allergies. Not everything can be safe for everybody, but some things can be safe for a vast majority of people.
An example of general food safety would be your PET and PETG filaments as they are used in all sorts of products already and for the most part should be checked by filament for the Material Safety Data Sheets.
Edit: Here is an MSDS for NinjaSemiFlex that should give an idea what to look for. Please notice it does not say 'FoodSafe' though because that is a different thing altogether:
https://ninjatek.com/wp-content/uploads/2016/05/SDS-SemiFlex-rev0.pdf
And here is what you are looking for I have italicized a few areas to compare):
ACUTE TOXICITY:
IRRITATION/CORROSION:
Not likely to result in irritation in solid form. Thermal decomposition may result in release of toxic airborne contaminates which can be irritating to eyes, skin and respiratory tract.
SENSITIZATION:
The chemical structure does not suggest a sensitizing effect.
CHRONIC TOXICITY:
CARCINOGENICITY:
The chemical structure does not suggest a specific alert for such an effect.
REPEATED DOSE TOXICITY:
No known chronic effects.
GENOTOXICITY:
The chemical structure does not suggest a mutagenic effect.
Edited by Guest
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kmanstudios 1,120
I just checked and they do not have the Safety Data Sheet available. All filaments will or should have one to check such things as bio-compatibility.
Most things that are just coming into contact with tissue, especially mucous membranes, are more about what toxins are released through the material and not so much about sterilization as you can sterilize without heat (not the easiest way, but can be done).
I would check the data sheets on the filaments. Here is the link to the page that has the "non-working" link to the MSDS.
http://ngen-flex.colorfabb.com/what/
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bob-hepple 59
Then Food Safe Materials should Do ??
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