A non-woven fabric which consists of a blend 75% to 95% by weight of polypropylene
based fibers and 5 to 25% by weight of polyester based fibers. The polypropylene
fibers are extruded from a melt mixture of about 80 to 99% by weight polypropylene
and about 1 to 20% by weight of a suitable heat stabilizer. The polyester based
fibers are extruded from a melt mixture of 80% to 100% by weight polyester and
0 to 20% by weight of other stabilizers and/or fire retardants. The flame retardant
compounds are added to and blended with the polyester melt prior to the extrusion
of the polyester based fibers. Most preferably, the extruded polypropylene and
polyester based fibers are staple fibers of between about 2 and 12 denier.
