email@example.com (joe) wrote in message
Plasticizers are too heavy to have a significant vapor pressure.
Considering that the government says that vinyl toys are safe for
children http://www.acsh.org/press/releases/vinyltoys062199.html , I
wouldn't be to concerned about plasticizers. Keep in mind that
children will (not might, but will) put toys in their mouths. And keep
in mind that they are children, the basis for a huge amount of
fearmongering by anyone with a political agenda.
There are two ways to get softness with EVA. One is to destroy more
by using a grade with high VA content. However, these grades tend to be more
expensive and lower in molecular weight. The loss in molecular weight results in
lower physical properties and can make them difficult to process, especially if
you plan to extrude them. The other way is soften EVA is to use plasticizers.
However, unlike PVC which typically uses phthalate ester plasticizers, EVA can
modest amounts of paraffinic plasticizers. These plasticizers do not have the
alleged health concerns that phthalate esters have attached to them.
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