Monthly Archives: January 2017

If you've experienced foil balloons leaking shortly after filling them you're not alone.  Foil or "mylar" balloons are made from very light and thin, high density plastic film with metal coating on one side.  The materials used in first generation foil balloon material were heavy by today's standards.  This made them tough enough to withstand being filled using a simple latex inflator which is typically supplied with a rental helium bottle.  You could eyeball a fairly safe fill volume just by looking at the balloon. Beginning nearly a decade ago (even before the helium