PET aluminum flexible duct is made
from PET film and aluminum foil by glue. As we all know, aluminum is non-flammable
while PET is flammable. So during the production, we need to add flame
retardant materials in the PET.
Not
only the materials PET itself needs to be non-flammable, but also the glue we
use should be the flame retardant. Generally water-based glue t is not easy to
burn, but polyurethane glue that is widely used is hypergolic on the market. This
kind of polyurethane glue is poisonous and it would spread with the air through
the flexible ducts. As an American-owned and China-based manufacturer, Deflecto
is always dedicated to using non-poisonous water-based glue to avoid any
harmful issues to our customers.
Then
you may wonder how to tell whether aluminum flexible ducts are non-flammable? A
simple test on open fire could tell us the truth. When flexible ducts are put
in the open fire, it is burning. While it’s removed away from any fires, it
stops burning, which could indicate the material is non-flammable. If the
flexible ducts keep burning away from open fire, these ducts are combustible. When
a fire breaks out, these combustible flexible ducts would boost the fire. Therefore it’s quite important for us to
choose the right non-flammable flexible ducts in consideration of our family
safety.
Hope
these suggestions from Deflecto would be a great help to you.
